Vitotronic 300 mw1b инструкция для специалистов

Installation and Service

Instructions

for use by heating contractor

Vitotronic 300, Type GW5B

Digital boiler control unit

Vitotronic 300-K, Type MW1B

Weather-compensated digital cascade control unit

VITOTRONIC 300, GW5B

VITOTRONIC 300-K, MW1B

Vitotronic 300, GW5B

Certified as a component part for Viessmann boilers

5693 973 — 06 06/2016

Vitotronic 300-K, MW1B

Product may not be exactly as shown

IMPORTANT

Read and save these instructions for future reference.

Please file in Service Binder

2

General

Vitotronic 300, GW5B and MW1B Installation and Service

Safety, Installation and Warranty Requirements

Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).

Product documentation

Read all applicable documentation before commencing installation. Store documentation near boiler in a

readily accessible location for reference in the future by service personnel.



For a listing of applicable literature,

please see section entitled “Important

Regulatory and Safety Requirements”.

Licensed professional heating contractor

The installation, adjustment, service and maintenance of this equipment must be performed by a licensed

professional heating contractor.

WARNING

Installers must follow local regulations with respect to installation of carbon monoxide detectors. Follow the

Viessmann maintenance schedule of the boiler contained in this manual.

Operating and Service Documentation

It is recommended that all product documentation such as parts lists, operating and service instructions be handed over to the system user for storage.

Documentation is to be stored near boiler in a readily accessible location for reference by service personnel.



Please see section entitled

“Important Regulatory and Installation

Requirements”.

Advice to owner

Once the installation work is complete, the heating contractor must familiarize the system operator/ ultimate owner with all equipment, as well as safety precautions/requirements, shutdown procedure, and the need for professional service annually before the

heating season begin.

Warranty

Information contained in this and related product documentation must be read and followed. Failure to do so renders the warranty null and void.

Product Information

Vitotronic 300, Type GW5B

For installation in or mounting on Viessmann boilers only.

Applicable to the following control units

Order No. 7134555, 7143156, 7511362 from

Serial No. 7143000

Order No. 7134555, 7143156, 7511362 from

Serial No. 7187101

Order No. 7134555, 7143156, 7511362 from

Serial No. 7248248

Vitotronic 300, GW5B and MW1B Installation and Service

General

Safety

Preparing for Installation

Installation, Vitotronic 300, GW5B

Installation, Vitotronic 300-K

Table of Contents

Page

Safety, Installation and Warranty Requirements…………..2

Product documentation………………………………..2

Warranty………………………………………………….2

Licensed

Advice to owner…………………………………………2

Operating and Service Documentation………………2

Product Information…………………………………………….2

About these Instructions………………………………………6

For your Safety………………………………………………….7

Operation…………………………………………………7

Flue gas smell……………………………………………7

Working on the equipment…………………………….7

Maintenance

Technical Data Manual…………………………………7

smell gas…………………………………………7

emergencies…………………………………………..7

Installation of additional components……………….7

Boiler conditions…………………………………7

Safety Terminology……………………………………………..7

Designation in the System Example………………………….8

Overview of System Example…………………………………8

System Example…………………………………………………9

Overview of Electrical Connections………………………..15

120V External Connection Overview….………………..…17

Inserting Cables and Applying Strain Relief………………18

Inserting the Boiler Coding Card……………………………18

Inserting the LON Communication Module……………….19

Connecting Sensors…………………………………………..19

120V External Connection…………………………..………19

Connecting Actuators…………………………………………21

Connection the Central Fault Massage Facility…………..22

Connection of low Water Cut-off Device…………………22

Connections to Terminal 150………………………….……23

Connections to Terminal 151………………………….……23

Blocking Boiler Externally / Adding to the Boiler Sequence…24

Connecting a Burner………………………………………….25

Preparing Boilers for Cascade Mode…………………….…25

Overview of Electrical Connections………………………..26

Mounting the Control Unit…………………………………..28

Inserting Cables/Leads and Applying Strain Relief………29

Connecting Pumps…………………………………………….30

Connecting Sensors…………………………………………..31

120V External Connection……………………………..……32

Connecting Actuators………………………………………..33

Connection Central Fault Massage Facility……………….34

External Demand Via Switching Contact………………….34

External Demand via 0-10V Input………………………….35

External Blocking via Switching Contact………………….35

External “Mixing Valve Closed” / “Mixing Valve Open”……36

External Heating Program Changeover…………………….36

Making the LON Connection…………………………………37

3

4

Table of Contents

Power Supply

Opening and Closing the Control Units

Commissioning

Preparing for Installation

Installation Sequences

Service Scans, Vitotronic 300, GW5B

Service Scans, Vitotronic 300-K

Troubleshooting, Vitotronic 300, GW5B

Troubleshooting, Vitotronic 300-K

Function Description

Vitotronic 300, GW5B and MW1B Installation and Service

Page

Power Supply…………………………………………………..38

Fitting the Control Unit Front………………………………..39

Opening the Control Unit…………………………………….39

Testing the High Limit Safety Cut-out……………………..40

Changing the Language on the Vitotronic 300-K………..40

Setting the Date and Time the Vitotronic 300-K………..40

Matching the Coding Addresses to the System Version….41

Selecting the Boiler Sequence at the Vitotronic 300-K…42

Connecting the Control Unit to the LON………………….43

Checking Actuators and Sensors at the

Vitotronic 300 GW5B………………………………………..46

Checking Actuators and Sensors at the

Vitotronic 300-K………………………………………………47

Adjusting Heating Curves…………………………………….48

Calling up Service Menu……………………………………..50

Exiting Service Menu…………………………………………50

Calling up Service Menu……………………………………..51

Scanning Operating Data…………………………………….51

Brief Scan………………………………………………………52

Scanning and Resetting Service Display…………………..52

Fault Codes…………………………………………………….53

Fault Display……………………………………………………55

Fault Codes……………………………………………………..56

Boiler Temperature Control of the

Vitotronic 300 GW5B………………………………………..60

Cascade Control of the Vitotronic 300-K…………………62

Heating Circuit Control Unit of the Vitotronic 300-…….65

DHW Tank Temperature Control of the

Vitotronic 300-K……………………………………………….69

Vitotronic 300, GW5B and MW1B Installation and Service

Code 1, Vitotronic 300, GW5B

Code 2, Vitotronic 300, GW5B

Code 1, Vitotronic 300-K

Code 2, Vitotronic 300-K

Wiring, Vitotronic 300, GW5B

Wiring, Vitotronic 300-K

Components

Parts Lists

Specification

Table of Contents

Page

Calling up Coding Level 1……………………………………71

Group 1 “General”…………………………………………….71

Group 2 “ Boiler”………………………………………………72

Calling up Coding Level 2……………………………………73

Group 1 “General”…………………………………………….74

Group 2 “ Boiler”………………………………………………78

Calling up Coding Level 1……………………………………79

“General” Group……………………………………………….80

“Cascade” Group……………………………………………..81

“DHW” Group………….………………………………….……81

“Solar” Group………………………………………………….82

“Heating Circuit 1”, “Heating Circuit 2”,

“Heating Circuit 3” Group……………………………………83

Calling up Coding Level 2……………………………………86

“General” Group……………………………………………….87

“Cascade” Group……………………………………………..92

“DHW” Group………………………………………………….93

“Solar” Group…………………………………………………..95

“Heating Circuit 1”, “Heating Circuit 2”,

“Heating Circuit 3” Group……………………………………98

Connection and Wiring Diagram…………………………..103

Connection and Wiring Diagram…………………………..106

Sensors………………………………………………………..110

Boiler Coding Card…………………………………………..111

Mixing Valve Motor Kit……………………………………..111

Extension EA1 Accessory (optional)…………………….112

Parts List Vitotronic 300, GW5B…………………………113

Parts List Vitotronic 300-K………………………………..114

Specification Vitotronic 300, GW5B…………………….115

Specification Vitotronic 300-K……………………………115

5

6

Safety

About these Instructions

Vitotronic 300, GW5B & MW1B Installation and Service

Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.



Warnings draw your attention to the presence of

potential hazards or important product information.

WARNING

Indicates an imminently hazardous situation which, if not avoided, could result in loss of life, serious injury or substantial product/property damage.

CAUTION

Indicates an imminently hazardous situation which, if not avoided, may result in minor injury or product/ property damage.

Cautions draw your attention to the presence of

potential hazards or important product information.

IMPORTANT

Helpful hints for installation, operation or maintenance

which pertain to the product.

 This symbol indicates that additional, pertinent

information is to be found.

This symbol indicates that other instructions must

referenced.

Vitotronic 300, GW5B & MW1B Installation and Service

For your Safety

Safety

CAUTION

Follow these safety instructions closely to avoid the risk of injury and damage to property.

H

Operation

Before operating the boiler, make sure you fully

understand its method of operation. Your heating

contractor should always perform the initial start-up

and explain the system. Any warranty is null and void

if these instructions are not followed.

H

Flue gas smell

— Deactivate heating equipment.

— Open windows and doors.

— Inform your heating contractor.

H

Working on the equipment

All personnel working on the equipment or the heating

system must have the proper qualifications and hold

all necessary licenses. Ensure main power to

equipment, heating system, and all external controls

has been deactivated. Close main gas supply valve.

Take precautions in all instances to avoid accidental

activation of power during service work.

H

Dangerous conditions

— Deactivate main power immediately.

— Close gas supply valve.

H

Maintenance and cleaning

Regular inspection and service by a qualified heating

contractor is important to the performance of the boiler.

Neglected maintenance impacts on warranty; regular

inspection ensures clean, environmentally friendly and

efficient operation. We recommend a maintenance

contract with a qualified heating contractor.

H

Technical Data Manual

— Installation Instruction and Service Instructions

— Operating Instructions and User’s Information Manual

Additional applicable literature:

— Accessory manuals

If you smell gas

H

Don’t smoke! Don’t use naked flames or cause sparks

(e.g. by switching lights or electrical appliances on

H

Open windows and doors

H

Close the gas shut-off valve

H

Inform your heating engineers/service contractors from

outside the building

H

Observe the safety regulations of your gas supply

company (see gas meter) and those of your heating

engineers (see start-up or instruction report).

In emergencies

H

Immediately switch off the power supply, e.g. at the

separate fuse or power supply disconnect switch

(unless there is a smell of gas).

H

Close the shut-off valves in the oil pipes or close the

gas shut-off valve, whichever applicable.

H

Use suitable extinguishers in the event of fire.

Installation of additional components

The installation of additional components which have not been tested together with the boiler can adversely affect the function and performance of the boiler.

Our warranty does not cover and weaccept no liability for damage attributable to the installation of such components.

Boiler room conditions

H

Do not use a room in which the air is polluted by

halogenated hydro-carbons (e.g. as contained in

aerosols, paints, solvents and cleaning agents)

H

Do not use a room subject to high levels of dust

H

Do not use a room subject to permanently high humidity

H

The room should be frost-protected

H

Max. ambient temperature 95° F (35° C).

H

Provide good ventilation and do not close or obstruct

vents (if installed).

This symbol indicates a reference to other instructions which must be observed.

Safety Terminology

Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include ”WARNING” and ”CAUTION”. See below.

WARNING

Indicates an imminently hazardous situation which, if not avoided, could result in substantial product / property damage, serious injury or loss of life.

CAUTION

Indicates an imminently hazardous situation which, if not avoided, may result in minor injury or product / property damage.

7

Preparing for Installation

Designations in the System Example

Vitotronic 300, GW5B and MW1B Installation and Service

8

Overview of System Example

Boiler

Vitocrossal, 200 CM2

Characteristics

Multi-boiler installation

H

This system example is merely a generic layout and must therefore be checked on site for completeness

and function.

H

Connect three-phase consumers via additional contactors.

H

With the Vitotronic 300-K, the communication module is integrated.

Page

9

Vitotronic 300, GW5B & MW1B Installation and Service

System Example

Multi boiler system: Vitocrossal 200 CM2

Hydraulic installation layout

Preparing for Installation

Note: This layout is a basic example without shut-off devices or safety equipment. This does not replace the need for local engineering.

9

10

Preparing for Installation

System Example

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Equipment required

Pos. Description

1

Boiler I (cascade mode)

2

Neutralizing system

3

Boiler water temperature sensor KTS

5

6

Supply temperature sensor, common heating supply VTS as contact temperature sensor (standard delivery for Vitotronic 300-K) or immersion temperature sensor

Outside temperature sensor ATS

7

Vitotronic 300-K

8

Vitotronic 300, GW5B

9

Boiler II (cascade mode) qP

Neutralizing system qQ

Boiler water temperature sensor KTS qE

Vitotronic 300, GW5B qR

DHW tank

qT

DHW tank temperature sensor STS qZ

Circulation pump for DHW tank heating UPSB qU

DHW recirculation pump ZP qI

Heating circuit 2

wP qO wQ qO wQ

Heating circuit pump M2

Extension kit for one heating circuit with mixing valve:

Supply temperature sensor M2 as contact temperature sensor and

Mixing valve motor M2 or

Supply temperature sensor M2 as contact temperature sensor or immersion temperature sensor and

Mixing valve motor for flanged mixing valve M2 wW wR wE wT wE wT wZ wI wU wO

Heating circuit 3

Heating circuit pump M3

Extension kit for one heating circuit with mixing valve:

Supply temperature sensor M3 as contact temperature sensor and

Mixing valve motor M3 or

Supply temperature sensor M3 as contact temperature sensor or immersion temperature sensor and

Mixing valve motor for flanged mixing valve M3

Heating circuit 1 at the Vitotronic 200-H

Heating circuit pump M1

Extension kit for one heating circuit with mixing valve:

Supply temperature sensor M1 as contact temperature sensor and

Mixing valve motor M1 or

Vitotronic 300, GW5B & MW1B Installation and Service

System Example

(continued)

Preparing for Installation zT zZ zU uP rP rI tP zP zQ

Equipment required

Pos. Description

wU wO

Supply temperature sensor M1 as contact temperature sensor or immersion temperature sensor and

Mixing valve motor for flanged mixing valve M1 eP eQ

Vitotronic 200-H and

LON communication module (accessory) and

LON connecting cable (accessory)

Outside temperature sensor ATS

Boiler accessories

eR eT eZ eU eI zR zI zO eE eI

Connection to safety equipment aBÖ (see page 23)

Minimum pressure limiter SDB

Maximum pressure limiter SDB

Low water cutoff

Central fault message system

External hook-ups

— External changeover of stepped/modulating burners

— External boiler blocking

— Start boiler externally as the last one in the boiler sequence

System accessories

Vitotrol 200 A or Vitotrol 300 A

Central fault message system zW zE

ON/OFF switch

Vitocom 100 LAN1

KM BUS distributor, for several KM BUS participants

Extension EA1

1 switching output (floating changeover contact):

— Switching a accessories pump to a substation

— Signalling reduced mode for a heating circuit

1 analogue input (0–10V):

— Specifying the set system supply temperature

3 digital inputs:

External heating program changeover, separately adjustable for heating circuits 1 to 3

External demand

External blocking with fault message

Fault message input

Short term operation of DHW recirculation pump

External hook-ups

— External blocking/mixing valve closed

— External demand

— External heating program changeover/mixing valve open

LON communication module (standard delivery Vitotronic 300-K) for communication with the following components:

Vitotronic boiler and heating circuit control units

11

12

Preparing for Installation

System Example

(continued)

Electrical installation wiring

Vitotronic 300, GW5B & MW1B Installation and Service

Vitotronic 300, GW5B & MW1B Installation and Service

System Example

(continued)

Preparing for Installation

13

Preparing for Installation

System Example

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

14

Code required at every Vitotronic 300, GW5B

Group Function

01:2 2 “Boiler” Multi boiler system with cascade control via LON

Boiler number at the Vitotronic:

07:2

07:3

07:4

77:2

77:3

77:4

2 “Boiler”

2 “Boiler”

2 “Boiler”

Boiler 2

Boiler 3

Boiler 4

LON participant number at the Vitotronic:

1 “General”

1 “General”

1 “General”

Vitotronic 300-K with two Vitotronic 300, GW5B

Boiler 3

Boiler 4

Code required at the Vitotronic 300-K

Group Function

System scheme without system circuit (heating circuit A1) 00:3,

00:4,

00:7,

00:8

35:1 “Cascade” Vitotronic 300-K with one Vitotronic 300, GW5B

35:2

35:3

35:4

“Cascade”

“Cascade”

“Cascade”

Vitotronic 300-K with two Vitotronic 300, GW5B

Vitotronic 300-K with three Vitotronic 300, GW5B

Vitotronic 300-K with four Vitotronic 300, GW5B

Vitotronic 300, GW5B & MW1B Installation and Service

Overview of Electrical Connections

Installation, Vitotronic 300, GW5B

Note: When connecting plugs aVD and aVH, bundle the individual cores of the cables close to the terminals.

This prevents the cores from shifting into the neighboring voltage area.

Main PCB low voltage

aJ A Return temperature sensor T1

(optional accessory, not used) aJ

B Return temperature sensor T2

(optional accessory, not used) aVD External hook-up aVG

KM BUS participant (accessory) aVH

External hook-up

Main PCB 120V~

sÖ A1 Switching output pump sL

Boiler circuit pump fÖ

Power supply fA Burner (call for heat) gÖ Central fault message gS A1 Isolation valve aBÖ

External connections, e.g. supplementary safety

equipment aBA Safety chain, floating aBH Power supply connection for accessories

Prior to making any connections ensure that the control control and junction box have been installed as per the boiler Installation Instructions.

15

16

Installation, Vitotronic 300, GW5B

Vitotronic 300, GW5B & MW1B Installation and Service

Overview of Electrical Connections

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

120V External Connection Overview

Installation, Vitotronic 300, GW5B

Legend

A Pumps

B To the control unit

Rated current: 2A~

* Maximum output 6FLA shared between all

120V outputs.

Pumps 120V

Available pump connections

sÖ M1/A1 Switching contact sL pump

17

Installation, Vitotronic 300, GW5B

Vitotronic 300, GW5B & MW1B Installation and Service

Inserting Cables and Applying Strain Relief

H

Control unit fitted on the boiler:

Route cables from below through the front panel of the boiler into the wiring chamber of the control unit.

H

Control unit fitted to the side of the boiler:

Route cables from below out of the cable channel into the control unit.

18

Legend

A

Cables with moulded strain relief

B On-site cables; strip up to 4 in. (100 mm) insulation

Inserting the Boiler Coding Card

Only use the boiler coding card supplied with the boiler

(see table in chapter “Components”).

Insert the boiler coding card into slot “X7”, through the recess in the cover.

Boiler

Vitocrossal 200, CM2

Coding card Part no.

1042 7841113

Vitotronic 300, GW5B & MW1B Installation and Service

Inserting the LON Communication Module

Installation, Vitotronic 300, GW5B

Making the LON connection, see page 37.

Connecting Sensors

Legend

Main PCB low voltage aJ A Return temperature sensor T1 (optional accessory) aJ B Return temperature sensor T2 (optional accessory)

120V External Connection

120V pumps with an amperage draw of <2FLA

A Din rail

B

Pump

19

20

Installation, Vitotronic 300, GW5B

120V External Connection

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

120V pumps with an amperage draw of >2FLA

Contactor specification 120VAC 1A

A Din rail

B Contactor/relay (field supplied)

C

Pump

D

Power supply w/disconnect and protection

240V pumps

Contactor specification 120VAC 1A

A

Din rail

B Contactor/relay (field supplied)

C Pump

D Power supply w/disconnect and protection

208/460/575V 3 phase pumps

Contactor specification 120VAC 1A

A Din rail

B

Contactor/relay (field supplied)

C

Pump

D Power supply w/disconnect and protection

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting Actuators

Installation, Vitotronic 300, GW5B

Legend

A

24V Mixing Valve Adaptor

B

DIN Rail (in junction box)

C

24V Valve Actuator

D

Valve

Legend

A

120V Mixing Valve Adaptor

B

DIN Rail (in connection enclosure)

C 120V Valve Actuator

D Valve

120V Valve Adaptor

Rated voltage:

Rated current:

24V Valve Adaptor

Rated voltage:

Rated current:

120VAC max. 0.1 FLA

24VAC max. 0.15 FLA

Operating time: 5 to 199 sec. selected via coding

“40”.

Available connections

gS A1 Motor for 3-way mixing valve, primary store system gS M2 For heating circuit 2 gS M3 For heating circuit 3

1. Disconnect power to control.

2. Install 120V or 24V valve adaptor on DIN rail inside enclosure.

3. Insert the plug gS into socket gS on the Vitotronic

control.

4. Fasten cable with tie.

5. Connect black wire of the adaptor to terminals 8,9 or

10 on the Din rail.

6. Connect valve actuator wires to the adaptor terminals

Rated voltage: 120V~

Rated current Max.: 0.1A~

Motor runtime for

3-way mixing valve: 10 to 255 sec, adjustable via

coding the”DHW”group, “C3” in the HC2 group and “C3” in the HC3 group.

21

22

Installation, Vitotronic 300, GW5B

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting the Central Fault Message Facility

Rated voltage

Rated current

120V~ max. 2A~

Connection of Low Water Cut-off Device

1. Remove jumper between terminals 12 and 15.

2. Make connection as shown in diagram.

CAUTION

The diagram shown is only a simplified conceptual drawing of a typical low water cut off (LWCO) device.

Refer to the manual specific to the device for interconnection details.

aBH

Power supply for accessories.

aBÖ

Connection for external equipment.

A Low water cut-off (typical)

Vitotronic 300, GW5B & MW1B Installation and Service

Connections to Safety Equipment

Installation, Vitotronic 300, GW5B

1. Connect the external safety equipment in series.

Connections to Terminal aBA

Legend

A DIN rail

B Low water cutoff

C

Other safety controls

External shut-off

1. Remove jumper between terminals 19 and 20.

2. Connect dry contact. Controlled switch-off takes place

when the contact is opened.

WARNING

The terminals should be used for safety switch-off purposes only (e.g. through a high limit thermostat).

During switch-off, there is no frost protection of the heating system and the boiler is not kept at the minimum boiler water temperature.

23

24

Installation, Vitotronic 300, GW5B

Vitotronic 300, GW5B & MW1B Installation and Service

Blocking Boiler Externally/Adding to the Boiler Sequence

Legend

A

Blocking boiler externally (dry contact)

B

Start boiler externally as the last one in the boiler sequence (dry contact)

Connection at plug aVD.

Note: ‘Live’ contacts lead to short circuits or phase failure. The external connection must be floating.

Contact A:

H

Contact closed:

The boiler is removed from the boiler sequence.

The isolation valve or the 3- way mixing valve are closed for constant return temperature control.

Shunt pump or boiler circuit pump are switched off.

The heat demand has to be met by the other boilers.

Note: If all boilers are blocked or there is no other boiler available for duty, there will be no frost protection for the heating system.

H

Contact open:

The boiler is integrated into the current boiler sequence.

Contact B:

H

Contact closed:

The heat demand of the heating system is met by the other boilers. This boiler is started if the output of these boilers is insufficient.

H

Contact open:

The boiler is integrated into the current boiler sequence.

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting the Burner

Installation, Vitotronic 300, GW5B

The burner cables are included in the standard boiler delivery.

Max. power consumption 3A.

Terminal codes

L Burner control power supply

?

Ground conductor to burner

N Neutral conductor to burner

T1 120V~ from boiler control unit

T2 Base load demand

S3 Connection for burner fault

B4 Connection for hours run meter

Legend

A

To the Vitotronic control

B

To the burner (burner control unit)

C KM BUS cable

Preparing Boilers for Cascade Mode

IMPORTANT

The following procedure must be done to configure each boiler for constant temperature control (cascade control) mode.

1. Turn on the boiler and set the language then press

‘OK’.

2. Set the time and date and press ‘OK’.

Refer to the boiler Installation Instructions.

3. Press and hold OK and until service menu comes

up.

4. Scroll using to the service functions, press OK.

5. Scroll using to the multi-boiler system.

6. Press OK.

7. Scroll using to “Yes”.

8. Press OK.

Note: The boiler will restart in cascade mode.

9. Set the language and press ‘OK’.

Refer to the boiler Installation Instructions.

25

Installation, Vitotronic 300-K

Overview of Electrical Connections

Vitotronic 300, GW5B & MW1B Installation and Service

Note: When connecting plugs aVD, aVH, sA, sK, ?

M2/M3 and sÖ M2/M3, bundle the individual wires of the cables close to the terminals.

This ensures that, should there be an error, for example when detaching a wire, the wires cannot drift into the adjacent voltage area.

26

Extension for heating circuits 2 and 3 with mixing valve

?

M2/M3 Supply temperature sensor sÖ M2/M3 Heating circuit pump gS M2/M3 Mixing valve motor

Main PCB 120V~

sÖ A1 Heating circuit pump

or

Primary pump, primary store system sA

Circulation pump for DHW tank heating

(optional accessory, not used)

Main PCB low voltage

!

Outside temperature sensor

§ /? Supply temperature sensor, common heating flow

%

A DHW tank temperature sensor

%

B DHW tank temperature sensor 2 for primary store aVD aVG system (optional accessory, not used) aJ B Return temperature sensor T2 (optional accessory,

not

or

Temperature sensor primary store system

(optional accessory, not used)

External hook-up

KM BUS participant (optional accessory, not used) aVH

External hook-up

LON LON BUS, connecting cable for data exchange with the Vitotronic 300, GW5B, 200-H, Vitocom and

Vitogate sK DHW recirculation pump (on site) sL Shunt pump or distribution pump (on site) fÖ

Power supply gÖ

Central fault message gS A1 Motor for 3-way mixing valve, primary store system

or

Motor for 3-way mixing valve, return temperature

control aBH

Power supply connection for mixing valve module circuit M2 and M3

Note: When inserting cables and applying strain relief see page 29.

Vitotronic 300, GW5B & MW1B Installation and Service

Installation, Vitotronic 300-K

Overview of Electrical Connections, Vitotronic 300-K

(continued)

Legend

A Vitotronic 300-K

B Din rail

27

28

Installation, Vitotronic 300-K

Mounting the Control Unit

Vitotronic 300, GW5B & MW1B Installation and Service

1. Fasten metal backplate onto mounting surface with fasteners.

2. Position midplate between backplate and connection

enclosure.

3. Install midplate and connection enclosure onto

backplate.

4. Fasten connection enclosure and midplate onto backplate with two fasteners.

5. Install control rear section onto connection enclosure housing. Hook control onto backplate tabs and pivot

downwards.

6. Fasten control rear section onto connection enclosure with two fasteners.

Vitotronic 300, GW5B & MW1B Installation and Service

Inserting Cables/Leads and Applying Strain Relief

Installation, Vitotronic 300-K

Run the cables from the connection enclosure into the control unit.

Apply strain relief to cables.

Cables with moulded strain relief clamp:

Connect cable and strain relief clamp.

OR

Fasten cable to the cable lead with cable tie.

Legend

A Cables with moulded strain relief

B On-site cables; strip up to 4 in. (100 mm) insulation.

29

Installation, Vitotronic 300-K

Connecting Pumps

Vitotronic 300, GW5B & MW1B Installation and Service

*

*

30

Legend

A 120V outputs

B To the control unit

Rated current: 2 A~

* Maximum pump output 6FLA shared between all

120V outputs.

Pumps 120V

Available pump connections

sÖ

M1/A1 High temperature circuit pump/ primary store pump sÖ M2 sÖ M3

Heating circuit 2 pump

Heating circuit 3 pump sA DHW sK sL

DHW recirculation pump pump

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting Sensors

Installation, Vitotronic 300-K

Installation point for outside temperature sensor

H

North or north-western wall, 6.6 to 8.2 ft. (2 to 2.5 m) above ground level; in multi storey buildings, in the upper half of the second floor

H

Not above windows, doors or ventilation outlets

H

Not immediately below balconies or gutters

H

Never render over

Outside temperature sensor connection

Two wire communication cable 18 AWG

Legend

!

Outside temperature sensor

§ /? Common supply temperature sensor

% A DHW tank temperature sensor 1

%

B DHW tank temperature sensor 2 for primary store system (optional accessory, not used) aJ B Return temperature sensor T2

or

Temperature sensor primary store system

(optional accessory, not used)

31

32

Installation, Vitotronic 300-K

120V External Connection

Vitotronic 300, GW5B & MW1B Installation and Service

120V pumps with an amperage draw of <2FLA

A

Din rail

B Pump

120V pumps with an amperage draw of >2FLA

Contactor specification 120VAC 1A

A Din rail

B

Contactor/relay (field supplied)

C

Pump

D Power supply w/disconnect and protection

240V pumps

Contactor specification 120VAC 1A

A Din rail

B

Contactor/relay (field supplied)

C

Pump

D Power supply w/disconnect and protection

208/460/575V 3 phase pumps

Contactor specification 120VAC 1A

A Din rail

B

Contactor/relay (field supplied)

C

Pump

D Power supply w/disconnect and protection

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting Actuators

Installation, Vitotronic 300-K

Legend

A

B

C

D

24V Mixing Valve Adaptor

DIN Rail (in junction box)

24V Valve Actuator

Valve

Legend

A 120V Mixing Valve Adaptor

B

DIN Rail (in junction box)

C 24V Valve Actuator

D Valve

120V Valve Adaptor

Rated voltage:

Rated current:

120 VAC max. 0.1 FLA

Recommended connection wire size: AWG 14

24V Valve Adaptor

Rated voltage:

Rated current:

24 VAC max. 0.15 FLA

Recommended connection wire size: AWG 14

Operating time: 5 to 199 sec. selected via coding

“40”.

Available connections

gS A1 Motor for 3-way mixing valve, primary store system gS M2 For heating circuit 2 gS

M3 For heating circuit 3

1. Disconnect power to control.

2. Install 120V or 24V valve adaptor on DIN rail inside enclosure.

3. Insert the plug gS into socket gS on the control.

4. Fasten cable with tie.

5. Connect black wire of the adaptor to terminals 8,9 or

10 on the Din rail.

6. Connect valve actuator wires to the adaptor terminals

Refer to the mixing valve adaptor Installation

Instructions for additional information.

Rated voltage: 120V~

Rated current Max.: 0.1A~

Motor runtime for

3-way mixing valve: 10 to 255 sec, adjustable via

coding the”DHW”group, “C3” in the HC2 group and “C3” in the HC3 group.

33

Installation, Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting the Central Fault Message Facility

Rated voltage

Rated current

120V~ max. 2 A~

External Demand Via Switching Contact

Connection

Note: ‘Live’ contacts lead to short circuits or phase failure. The external connection must be floating.

Connection options:

H

Plug aVH

H

Extension EA1 (accessory, see page 113)

Legend

A

Floating contact

B Plug aVH of the control unit

With the contact closed, the boiler burners are started subject to load. They heat to the set supply temperature selected in coding address “9B” in the “General” group.

The temperature is limited by this set value and the electronic maximum supply temperature limit (coding address “37” in the “Cascade” group).

34

Legend

A Floating contact

B Extension EA1

Codes

Plug aVD

No code required.

Extension EA1

Set “5D”, “5E” or “5F” in the “General” group to 2.

Vitotronic 300, GW5B & MW1B Installation and Service

External Demand via 0–10V Input

Installation, Vitotronic 300-K

Connection at input 0 – 10V at extension EA1

(see page 113).

0 — 1V no default set supply temperature

1V

10V

set value 50° F (10° C)

set value 212° F (100° C)

Observe coding address “1E” in the “General” group.

External Blocking via Switching Contact

Legend

A Floating contact

B Plug aVD of the control unit

Connection options:

H

Plug aVD

H

Extension EA1 (accessory, see page 113)

Connection

Note: ‘Live’ contacts lead to short circuits or phase failure. The external connection must be floating.

With the contact closed, the burners of all boilers will be subject to a control shutdown.

Any connected shunt or distribution pump is stopped.

Shut-off devices are closed.

Note: The heating system has no frost protection during blocking. The boilers are not held at the lower boiler water temperature.

Legend

A

Floating contact

B

Extension EA1

Codes

Plug aVD

Set coding address “99” in the “General” group, which the input should influence.

Extension EA1

Set “5D”, “5E” or “5F” in the “General” group to 3 or 4.

35

Installation, Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

External “Mixing Valve Closed”/”Mixing Valve Open”

Connection at plug aVD.

Note: ‘Live’ contacts lead to short circuits or phase failure.

The external connection must be floating.

Codes

External “Mixing valve open”

Via coding address “9A” in the “General” group, this function is assigned to the heating circuits.

External “Mixing valve closed”

Via coding address “99” in the “General” group, this function is assigned to the heating circuits.

Legend

A External “Mixing valve open” (floating contact)

B External “Mixing valve closed” (floating contact)

External Heating Program Changeover

Legend

A Floating contact

B Plug aVD of the control unit

Connection

Note: ‘Live’ contacts lead to short circuits or phase failure. The external connection must be floating.

Connection options:

H

Plug aVD

H

Extension EA1 (accessory, see page 112)

Codes

Plug aVD

This function is assigned to the heating circuits via coding address “91” in the

“General” group.

Extension EA1

Set “5D”, “5E” or “5F” in the “General” group to 1.

This function can be assigned to the heating circuits via coding address

“D8” in the “Heating circuit…” group.

Legend

A

Floating contact

B Extension EA1

36 or w or w

Preselected heating program

(Contact open)

9

Central heating OFF/

DHW OFF

Coding

D5:0

(factory set condition)

D5:1

Changed heating program

(Contact closed)



Permanent operation with reduced room temperature/DHW OFF



Constant operation with standard room temperature, DHW in accordance with coding address “64” Central heating

OFF/DHW ON

Central heating

ON/DHW ON

Vitotronic 300, GW5B & MW1B Installation and Service

Making the LON Connection

Connection with Viessmann LON cable

The line may be up to ≤ 23 ft. (7 m) long

Legend

A

Control unit or Vitocom

B LON cable, 23 ft. (7 m) long

C Terminator

Installation, Vitotronic 300-K

The Viessmann LON system is designed for the

“Line” BUS topology with a terminator at both ends

(accessories). The transfer distances for LON are subject to the electrical properties of the respective cabling.

For this reason, only use the stated cable types.

Use only one type of cable within the LON.

Observe the cabling requirements for the operation of the LON interface FTT 10-A (see www.echelon.com).

All Viessmann equipment is connected via RJ45 plugs.

The Viessmann LON system always requires the cores

“1” and “2” and the screen. The cores are interchangeable. The installation is therefore safe from pole errors.

Connection with Viessmann LON cable and coupling

Connection with on-site cable and LON plug

Installation spacing 23 to 69 ft. (7 to 21 m)

Legend

A

Control unit or Vitocom

B

LON cable, 23 ft. (7 m) long

Max. 3 cables between 2 appliances

C Terminator

D LON coupling

Connection with LON cable, on-site cable and LON junction box

≤ 3000 ft.

The line may be up to ≤ 3000 ft. (900 m)

(with LON plug)

Legend

A

Control unit or Vitocom

B

On-site cable

C Terminator

D LON plug

E Up to 99 participants

≤ 3000 ft.

The line may be up to ≤ 3000 ft. (900 m) (with LON junction boxes)

Legend

A

Control unit or Vitocom

B

LON cable, 23 ft. (7 m) long

C Terminator

D LON junction boxes

E

On-site cable

F

Up to 99 participants

37

38

Power Supply

Power Supply

Vitotronic 300, GW5B & MW1B Installation and Service

Legend

L: Line

N: Neutral

G: Ground

A Power supply 120VAC, 1PH, 60Hz, provide disconnect means and overcurrent protection as per local codes

B Terminals N, G and 11 (in junction box)

C Junction box

1. Ensure that the main power supply to the control contains overcurrent protection with a minimum rating of 6A and 2-pole disconnect.

WARNING

The control must be grounded.

Ensure that “L”, “N” and “G” are not interchanged.

2. Connect power supply wire to the connection fÖ terminals 11, N and G on the DIN rail inside the box.

Vitotronic 300, GW5B & MW1B Installation and Service

Fitting the Control Unit Front

Opening and Closing the Control Units

Legend

A

Cable retaining tab

Opening the Control Unit

Note: Route the ribbon cable through retainer A.

39

40

Commissioning

Testing the High Limit Safety Cut-out

Vitotronic 300, GW5B & MW1B Installation and Service

The minimum circulation volume should be 10% of the circulation volume at rated load.

Reduce the heat consumption as far as possible.

1. Hold down the “TEST” key until the burner has shut down: Thermostat is bridged. The high limit safety cut-out must shut down the burner at the latest when the safety temperature has been reached.

2. Release the “TEST” key.

3. Wait until the boiler water temperature has dropped approx. 15 to 20 K below the selected safety temperature.

4. Reset the high limit safety cut-out by pressing reset button.

Operating instructions

Changing the Language on the Vitotronic 300-K

At the commissioning stage, the display is in German

(default setting).

Extended menu:

1.

2. “Einstellungen” (Settings)

3. “Sprache” (Language) Deutsch DE (German)

4. Set the required language with

Setting the Date and Time on the Vitotronic 300-K

During commissioning, or after prolonged time out of use, the time and date need to be reset.

Extended menu:

1.

2. “Settings”

3. “Time / Date”

4. Set current time and date.

Vitotronic 300, GW5B & MW1B Installation and Service

Matching the Coding Addresses to the System Version

Commissioning

Vitotronic 300, GW5B (set codes at every Vitotronic 300,

GW5B — boiler control)

Switching mode from standalone/weather compensated control to constant temperature control (see page 25).

Vitotronic 300, GW5B

Check all addresses in Code 1 and adjust if required.

Check the following coding addresses and adjust accordingly in Code 2:

“4C”

“4D”

“4E”

“98”

“9C”

Group

1 “General”

1 “General”

1 “General”

1 “General”

1 “General”

Function

Function plug sÖ

Function plug sL

Function plug gS

Viessmann system number

Monitoring LON participants

“39”

“3A”

“4C”

“4D”

“4E”

“55”

“7A”

“98”

“9C”

Group

“Cascade”

“Cascade”

“General”

“General”

“General”

“DHW”

“General”

“General”

“General”

Vitotronic 300-K

Check all addresses in Code 1 and adjust if required.

Check the following coding addresses and adjust accordingly in Code 2:

Function

Permanent lead boiler

Permanent last boiler

Function plug sÖ

Function plug sL

Function plug gS

DHW tank temperature control function

Central control

Viessmann system number

Monitoring LON participants

41

42

Commissioning

Vitotronic 300, GW5B & MW1B Installation and Service

Selecting the Boiler Sequence at the Vitotronic 300-K

Subject to the set codes in the “Cascade” group and internal control calculations, the control unit offers various boiler sequences.

Coding addresses that influence the boiler sequence:

“38” Changing the lead boiler and the boiler

“39” sequence

Permanent lead boiler

“3A” Permanent last boiler

“41” to “44” ECO thresholds

H

Via the ECO threshold, every boiler can be blocked or enabled subject to the outside temperature.

H

If the boiler is required to achieve the set supply temperature in the case of enabled boilers failing, the

ECO threshold is disabled.

H

At least the lead boiler remains active if all boilers in

a system are blocked by the ECO threshold.

1. Press .

3. Select the required boiler sequence and confirm with

OK.

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting the Control Unit to the LON

Example of a multi boiler system

Commissioning

Legend

A Vitotronic 300 GW5B

B

Vitotronic 300 GW5B

C

Vitotronic 300-K

D

Vitotronic 200-K

E Vitocom

F LON system

G

Terminator

H

The LON communication module must be fitted into every Vitotronic 300, GW5B (see page 61).

Note: The communication module is integrated in the

Vitotronic 300-K.

H

Vitotronic 200-H:

The LON communication module (accessory) must be fitted.

Installation and service instructions,

Vitotronic 200-H

H

Within one LON, the same participant number must not be allocated twice.

H

Within one LON, the system number (coding address

“98” in the “General” group) must always be the same.

H

Only one Vitotronic may be programmed as fault manager.

H

The data transfer via the LON system can take several minutes.

43

44

Commissioning

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting the Control Unit to the LON

(continued)

A

Multi boiler system.

Set code “01:2” in group 2 “Boiler”.

Boiler number 1.

Code “07:1” in group 2 “Boiler”.

With LON communication module

Code “76:1” in group 1 “General”; automatic recognition.

—

B

Multi boiler system.

Set code “01:2” in group 2 “Boiler”.

Boiler number 2.

Set code “07:2” in group 2 “Boiler”.

With LON communication module

Code “76:1” in group 1 “General”; automatic recognition.

—

Participant no. 1.

Code “77:1” in group

1 “General”.

Control unit is not fault manager.

Code “79:0” in group

1 “General”.

—

Participant no. 2.

Set code “77:2” in group 1 “General”.

Control unit is not fault manager.

Code “79:0” in group

1 “General”.

—

—

LON participant remote monitoring.

Code “9C:20” in group 1 “General”.

—

LON participant remote monitoring.

Code “9C:20” in group 1 “General”.

C

—

—

D

—

—

With LON communication module

Code “76:1” in the “General” group; automatic recognition.

Number of connected boilers.

Set codes

“35:1” to

“35:4” in the

“Cascade”group.

Participant no. 5.

Set code “77:5” in the “General” group.

Control unit is fault manager.

Set code “79:1” in the “General” group.

Control unit transmits the time.

Code “7B:1” in the

“General” group.

Control unit transmits outside temperature.

Set code

“97:2” in the

“General” group.

LON participant remote monitoring.

Code “9C:20” in the

“General” group.

With LON communication module

Code “76:1” in the “General” group; automatic recognition.

—

Participant no. 10.

Set code “77:10” in the “General” group.

Control unit is not fault manager.

Set code “79:0” in the “General” group.

The control unit receives the time.

Set code “81:3” in the “General” group.

Control unit receives the outside temperature.

Set code “97:1” in the “General” group.

LON participant remote monitoring.

Code “9C:20” in the

“General” group.

E

—

—

—

—

Participant no. 99.

Device is fault manager.

Device receives the time.

—

—

Vitotronic 300, GW5B & MW1B Installation and Service

Connecting the Control Unit to the LON

(continued)

Commissioning

Carrying out a LON participant check at the Vitotronic

300-K

Communication with the system devices connected to the fault manager is tested by means of a participant check.

Preconditions:

H

The control unit must be programmed as fault manager

(code “79:1”).

H

The LON participant no. must be programmed in all control units (coding address “77”).

The LON participant list in the fault manager must be

up to date.

Carrying out the participant check:

1. Press OK and simultaneously for approx. 4 sec.

4. Select participant (e.g. participant 10).

The participant check for the selected participant is initiated.

H

Successfully tested participants are designated with

“OK”.

H

Unsuccessfully tested participants are designated with “Not OK”.

Note: To carry out a new participant check, create a new participant list with “Delete list?” (participant list is updated).

Note: H Vitotronic 300, GW5B:

During the participant check, the display for the relevant participant flashes for approx. 1 min.

H

Vitotronic 200-H:

During the participant check, the display for the relevant participant shows the participant no. and “Wink” for approx. 1 min.

45

46

Commissioning

Vitotronic 300, GW5B & MW1B Installation and Service

Checking Actuators and Sensors at the Vitotronic 300 GW5B

Testing the relay

1. Press OK and simultaneously for approx. 4 sec.

2. “Actuator test”

Before an actuator is selected, all actuators are off.

The following actuators (relay outputs) can be switched subject to system equipment level:

Display

“All actuators”

“Burner modulation”

“Burner modulation”

Explanation

Off All actuators have been switched off.

Open Modulating burner.

Neutral Modulating burner.

“Burner modulation”

“Output 20”

“Output 52”

“Output 52”

“Output 52”

“Output 29”

“Compiled fault message”

“EA1 output 1”

“AM1 output 1”

“AM1 output 2”

Close Modulating burner.

On Output 20 active.

Open

Neutral

Close

On Output 29 active.

On

On Contact “P — S” on plug aBJ of extension EA1 closed.

On Output active.

On Output active.

Note: During burner operation, the pumps connected to the control unit are started.

Checking sensors

Service menu:

1. Press OK and simultaneously for approx. 4 sec.

2. “Diagnosis”

3. Select group (see page 50).

4. Scan actual temperature of the relevant sensor.

Vitotronic 300, GW5B & MW1B Installation and Service

Checking Actuators and Sensors at the Vitotronic 300-K

Commissioning

Carrying out a relay test

1. Press OK and simultaneously for approx. 4 sec.

The following relay outputs can be controlled subject to the system equipment level:

Display Explanation

“All actuators”

“Output 20”

“Output 52”

OFF

ON

Open —

All actuators have been switched off.

Output 20 enabled.

“Output 52”

“Output 52”

“DHW tank prim pump”

“DHW circ pump”

“Output 29”

“Central fault mess.”

“Htg circ pump HC2”

Neutral —

Closed —

ON

ON

ON

ON

ON

—

Output for circulation pump for DHW tank heating enabled.

Output for DHW recirculation pump enabled.

Output 29 enabled.

Output heating circuit pump enabled (heating circuit with mixing valve M2).

“Mixing valve HC2”

“Mixing valve HC2”

“Htg circ pump HC3”

“Mixing valve HC3”

“Mixing valve HC3”

“EA1 output 1”

Open

Closed

ON

Open

Closed

ON

Output “Mixing valve open” enabled (heating circuit with mixing valve M2).

Output “Mixing valve closed” enabled (heating circuit with mixing valve M2).

Output heating circuit pump enabled (heating circuit with mixing valve M3).

“Mixing valve open” enabled (heating circuit with mixing valve M3).

Output “Mixing valve open” enabled (heating circuit with mixing valve M3).

“AM1 output 1”

“AM1 output 2”

“Solar circuit pump”

ON

ON

ON

Contact “P — S” on plug aBJ for extension EA1 closed.

Output enabled.

Output enabled.

Output for solar circuit pump sF at solar control module, type SM1, enabled.

“Solar circ pmp min” ON

Output for solar circuit pump sF at solar control module, type SM1, switched to minimum speed.

“Solar circ pmp max” ON

Output for solar circuit pump sF at solar control module, type SM1, switched to maximum speed.

“SM1 output 22” ON

Output sS at solar control module, type SM1, enabled.

Checking sensors

1. Press OK and simultaneously for approx. 4 sec.

2. “Diagnosis”

3. Select group (see overview on page 51).

4. Scan actual temperature of the relevant sensor.

47

48

Commissioning

Adjusting Heating Curves

Vitotronic 300, GW5B & MW1B Installation and Service

The heating curves illustrate the relationship between the outside temperature and the boiler water or supply temperature.

To put it simply: The lower the outside temperature, the higher the boiler water or supply temperature.

The room temperature, again, depends on the boiler water or the supply temperature.

Settings in the factory set condition:

H

Slope = 1.4

H

Shift = 0

Boiler water or supply temperature

Room set-point temperature

Outdoor temperature

Example of outside temperature 7° F (−14° C)

Legend

A Underfloor heating system, slope 0.2 to 0.8

B Low temperature heating system, slope 0.8 to 1.6

C

Heating systems with a boiler water temperature in excess of 167° F (75° C), slope greater than 1.6

230 °F

(110 °C)

79 °F

(26 °C)

68 °F

(20 °C)

-4 °F

(-20 °C)

Legend

A Boiler water temperature or supply temperature

B

Outside temperature

C

Set room temperature

D Heating circuit pump OFF

E Heating circuit pump ON

Selecting the set room temperature

Individually adjustable for each heating circuit.

The heating curve is offset along the axis of the set room temperature. When the heating circuit pump logic function has been enabled, it modifies the starting and stopping characteristics of the heating circuit pump.

Standard set room temperature

Changing the standard room temperature from 68 to 79° F

(20 to 26° C)

Operating instructions

Vitotronic 300, GW5B & MW1B Installation and Service

Adjusting Heating Curves

(continued)

Commissioning

Reduced set room temperature

Changing the reduced room temperature from 37 to 57° F

(3 to 14° C)

Operating instructions

Legend

A

Boiler water temperature or supply temperature

B

Outside temperature

C Set room temperature

D Heating circuit pump OFF

E Heating circuit pump ON

Outside temperature

Legend

A Changing the slope

B Changing the shift (vertical parallel offset of the heating curve)

Changing the slope and shift

Individually adjustable for each heating circuit.

Extended menu:

1.

2. “Heating”

3. Select heating circuit.

5. “Slope” or “Shift”

6. Select heating curve according to the system requirements.

Example:

Heating curve setting with slope 1.5:

49

50

Service Scans, Vitotronic 300, GW5B

Calling up the Service Menu

Service menu overview

Service

Diagnosis

Actuator test

Coding level 1

Coding level 2

Fault history

Service functions

End service?

Vitotronic 300, GW5B & MW1B Installation and Service

Press OK and simultaneously for approx. 4 sec.

General

Brief scan

Reset data

Participant check

Service PIN

Service reset

“Coding level 2” is only displayed if this level has been enabled:

Press OK and simultaneously for approx. 4 sec.

Exiting the Service Menu

1. Select “End service?”.

2. Select “Yes”.

3. Confirm with OK.

Note: The system exits the service menu automatically after 30 min.

Vitotronic 300, GW5B & MW1B Installation and Service

Calling up the Service Menu

Service Scans, Vitotronic 300-K

Service menu overview

Press OK and simultaneously for approx. 4 sec.

Service

Diagnosis

Actuator test

Coding level 1

Coding level 2

Fault history

Service functions

Terminate service?

General

Heating circuit 1 HC1

Heating circuit 2 HC2

Heating circuit 3 HC3

DHW

Solar

Brief scan

Reset data

Participant check

Service PIN

Service reset

“Coding level 2” is only displayed if this level has been enabled:

Press OK and simultaneously for approx. 4 sec.

Scanning Operating Data

Operating data can be scanned in six areas (see

“Diagnosis” in the overview “Service menu”).

Operating data on heating circuits with mixing valves and solar can only be scanned if the components are installed in the system.

For further information on operating data, see chapter

“Brief scan”.

Note: “- — -” appears on the display if a sensor that has been scanned is faulty.

Calling up operating data

1. Press OK and simultaneously for approx. 4 sec.

2. “Diagnosis”

3. Select required group, e.g. “General”.

Resetting operating data

Saved operating data (e.g. hours run) can be reset to 0.

The value “Adjusted outside temp” is reset to the actual value.

1. Press OK and simultaneously for approx. 4 sec.

2. “Diagnosis”

4. Select required value or “All details”.

51

52

Service Scans, Vitotronic 300-K

Brief Scan

Vitotronic 300, GW5B & MW1B Installation and Service

In the brief scan, you can scan temperatures, software versions and connected components, for example.

1. Press OK and simultaneously for approx. 4 sec.

2. “Diagnosis”

4. Press OK. The display shows 9 lines with 6 fields each.

For an explanation of the relevant values in the individual lines, see the following table:

Line (brief scan) Field

1 2 3 4 5

1:

2:

3:

4:

5:

6:

7:

8:

System schemes 01 to 10

2

0

0

0

0

SNVT config.

0: Auto

1: Tool

0

0

0

0

0

Software version

Communic.

coproc.

0

0

6

Control unit software version

0 0

Programming unit software version

Appliance identification

ZE-ID

Number of KM BUS participants Software version

Solar control module

0

0

0

Subnet address/system number Node address

Software version

Neuron Chip

0 0

0

0

Software version, extension

AM1

0

0

0

Software version, extension

EA1

Number of LON participants

9:

10:

11:

0

0

System circuit HC1

0 0

0

0

Heating circuit HC2

0 0

0

Software version, extension for heating

0

0

Heating circuit HC3

0 0

0

Software version, extension for heating

0

0 circuits

2 and 3 with mixing valve circuits

2 and 3 with mixing valve

Note: The displays in fields 3 and 5 are the same.

Scanning and Resetting Service Display

No service interval can be set at the Vitotronic 300-K. In other words, no service display is shown.

Note: If a service display appears on the Vitotronic 300,

GW5B, the display will show “Participant fault” and the participant number.

Vitotronic 300, GW5B & MW1B Installation and Service

Fault Codes

Troubleshooting, Vitotronic 300, GW5B

Displayed fault code

0F

30

38

60

68

70

78

A0

A1

A2

A3

AA

AC

System characteristics Cause Measures

Control mode.

The burner is started and stopped via a temperature controller.

The burner is started and stopped via a temperature controller.

Boiler with maximum temperature, no output reduction, mixing valve return temperature control “Open”.

Boiler with maximum temperature, no output reduction, mixing valve return temperature control “Open”.

Shunt pump constantly “ON”.

Shunt pump constantly “ON”.

Boiler cools down.

Boiler cools down.

Boiler cools down.

Boiler cools down.

Control mode.

Control mode.

Service “0F” is only displayed in the fault history.

Short circuit, boiler water temperature sensor

Lead break, boiler water temperature sensor

Short circuit, temperature sensor aJA

Service the appliance.

Note: After the service, set code “24:0” in group 2

“Boiler”.

Check the boiler water temperature sensor

(see page 110).

Check the boiler water temperature sensor

(see page 110).

Check temperature sensor

(see page 110).

Lead break, temperature sensor aJA

Short circuit, temperature sensor aJB

Lead break, temperature sensor aJB

Fault, safety equipment at “X7” of plug-in adaptor

2 for external safety equipment

Fault, safety equipment at “X3” of plug-in adaptor

2 for external safety equipment

Fault, safety equipment at “X2” of plug-in adaptor

2 for external safety equipment

Fault, safety equipment at “X1” of plug-in adaptor

2 for external safety equipment

Therm-Control configuration fault:

Plug aJA not plugged in.

Check temperature sensor

(see page 110).

Without temperature sensor:

Set code “4A:0” in group 1

“General”.

Check temperature sensor

(see page 110).

Check temperature sensor

(see page 110).

Without temperature sensor:

Set code “4B:0” in group 1

“General”.

Check safety equipment, and reset if required.

Check safety equipment, and reset if required.

Check safety equipment, and reset if required.

Check safety equipment, and reset if required.

Insert plug aJA.

For Vitocrossal, code “0D:

0” in group 2 “Boiler” must be selected.

Insert plug aJA and check codes.

Return temperature control configuration error:

Code “0C:1” in group 2

“Boiler” has been set, but plug aJA is not plugged in and/or code “4E:0” in group 1 “General” is not set.

53

54

Troubleshooting, Vitotronic 300, GW5B

Fault Codes

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

B0

B1

B5

B6

Displayed fault code

AD

B7

B8

BF

C1

C8

C9

CA

CB

CE

CF

D1

D2

D4

System characteristics Cause Measures

Control mode.

Control mode.

Control mode.

Control mode.

Control mode.

Isolation valve configuration error:

Code “0C:2”, “0C:

3” or “0C:4” in group 2 “Boiler” is set and code “4E:1” in group 1

“General” is set.

Short circuit, flue gas temperature sensor

Communication fault, programming unit

Internal fault

Invalid hardware recognized

With isolation valve:

Set code “4E:0” in group 1

“General”.

Without isolation valve:

Set code “0C:1” in group 2 “Boiler”.

Check the flue gas temperature sensor (see page 110).

Check connections and replace the programming unit if required.

Check PCB and plug-in connections; replace PCB if required.

Check coding address

“92” in group 1 “General”;

“92:161” must be set.

Plug in boiler coding card or replace.

Boiler is regulated by the temperature controller.

Control mode.

Boiler coding card faulty

Lead break, flue gas temperature sensor

Check the flue gas temperature sensor (see page 110).

Without flue gas temperature sensor:

Set code “1F:0” in group 2 “Boiler”.

Replace LON communication module.

Control mode.

No communication via

LON.

Boiler cools down.

Incorrect LON communication module

Boiler cools down.

Boiler cools down.

Boiler cools down

Boiler cools down

Control mode.

Control mode.

No communication via

LON.

Boiler cools down

Control mode.

Boiler cools down

External safety equipment at plug abÖ

Fault, low water indicator at “X7” of plug-in adaptor 1 for external safety equipment

Fault, maximum pressure limiter at

“X3” of plug-in adaptor 1 for external safety equipment

Fault, minimum or maximum pressure limiter 2 at “X2” of plug-in adaptor 1 for external safety equipment

Additional high limit safety cut-out fault or temperature limiter at “X1” of plug-in adaptor 1 for external safety equipment

Communication fault, plug-in adaptor

1 for external safety equipment

Communication fault, LON communication module of control unit

Burner fault

Communication fault, plug-in adaptor

2 for external safety equipment

The high limit safety cut-out has responded or fuse F2 has blown

Check connection and external safety equipment.

Check the system water level; reset low water indicator.

Check system pressure; reset maximum pressure limiter.

Check system pressure, reset minimum or maximum pressure limiter 2.

Check system temperature; reset high limit safety cut-out.

Check plug-in adaptor.

Without plug-in adaptor:

Set code “30:0” in group 1 “General”.

Check LON communication module and replace if required.

Check the burner

Check plug-in adaptor.

Without plug-in adaptor:

Set code “31:0” in group 1 “General”.

Check the high limit safety cut-out or the burner, burner loop and fuse F2.

Vitotronic 300, GW5B & MW1B Installation and Service

Fault Display

Troubleshooting, Vitotronic 300-K

In the event of a fault, the red fault display flashes at the control unit. “Fault” is displayed and

The fault code is displayed with OK.

 flashes.

Note: If a central fault message facility is connected, this is started.

For an explanation of the fault code, see chapter “Fault codes”.

For some faults, the type of fault is also displayed in plain text.

Acknowledging faults

Follow the instructions on the display.

Note: The fault message is transferred to the menu.

A fault message facility, if connected, will be switched off.

If an acknowledged fault is not remedied, the fault message will be re-displayed the following day and the fault message facility restarted.

Calling up acknowledged fault messages

Extended menu:

1.

2. “Fault”

Calling up fault codes from the fault memory (fault history)

The 10 most recent faults (including those remedied) are saved and can be called up.

Faults are sorted by date.

1. Press OK and simultaneously for approx. 4 sec.

3. “Display?”

55

56

Troubleshooting, Vitotronic 300-K

Fault Codes

Vitotronic 300, GW5B & MW1B Installation and Service

Displayed fault code

10

18

20

28

40

44

48

4C

50

51

58

59

System characteristics

Activates at 32 °F (0° C) outside temperature.

Activates at 32 °F (0° C) outside temperature.

Stand-alone control unit without supply temperature sensor (poss. supply temperature not high enough).

Stand-alone control unit without supply temperature sensor (poss. supply temperature not high enough).

Mixing valve is closed.

Mixing valve is closed.

Mixing valve is closed.

Mixing valve is closed.

DHW tank primary pump “ON”:

Set DHW temperature = set supply temperature

Priority control is cancelled.

or

With primary store system:

DHW tank heating is started and stopped by DHW tank temperature sensor 2.

With primary store system:

DHW tank heating is started and stopped by DHW tank temperature sensor 1.

DHW tank primary pump “ON”:

Set DHW temperature = set supply temperature

Priority control is cancelled.

or

With primary store system:

DHW tank heating is started and stopped by DHW tank temperature sensor 2.

With primary store system:

DHW tank heating is started and stopped by DHW tank temperature sensor 1.

Cause

Short circuit, outside temperature sensor

Lead break, outside temperature sensor

Short circuit, common supply temperature sensor

Lead break, common supply temperature sensor

Short circuit, supply temperature sensor, heating circuit with mixing valve M2 (heating circuit 2)

Short circuit, supply temperature sensor, heating circuit with mixing valve M3 (heating circuit 3)

Lead break, supply temperature sensor, heating circuit with mixing valve M2 (heating circuit 2)

Lead break, supply temperature sensor, heating circuit with mixing valve M3 (heating circuit 3)

Short circuit, DHW tank temperature sensor 1

Short circuit, DHW tank temperature sensor 2

Lead break, DHW tank temperature sensor 1

Lead break, DHW tank temperature sensor 2

Measures

Check outside temperature sensor (see page 110).

Check outside temperature sensor (see page 110).

Check supply temperature sensor

(see page 110).

Check supply temperature sensor

(see page 110).

Check supply temperature sensor

(see page 110).

Check supply temperature sensor

(see page 110).

Check supply temperature sensor

(see page 110).

Check supply temperature sensor

(see page 110).

Check the DHW tank temperature sensor

(see page 110).

Check the DHW tank temperature sensor

(see page 110).

Check the DHW tank temperature sensor (see page 110).

Check the DHW tank temperature sensor

(see page 110).

Vitotronic 300, GW5B & MW1B Installation and Service

Fault Codes

(continued)

Troubleshooting, Vitotronic 300-K

Displayed fault code

60

68

System characteristics

Boiler with maximum temperature, no output reduction, mixing valve return temperature control “Open”.

Boiler with maximum temperature, no output reduction, mixing valve return temperature control “Open”.

70

78

90

Shunt pump constantly “ON”.

With primary store system:

3-way mixing valve “Closed”; no DHW heating.

Shunt pump constantly “ON”.

With primary store system:

3-way mixing valve “Closed”; no DHW heating.

Control mode.

91

92

93

94

98

99

9A

Control mode.

No solar DHW heating.

Control mode

No solar DHW heating.

Control mode

Control mode

No solar DHW heating.

Cause Measures

Short circuit, temperature sensor aJ A

Check temperature sensor

(see page 110).

Lead break, temperature sensor aJ

A

Short circuit, temperature sensor aJ

B

Check temperature sensor

(see page 110).

Without temperature sensor:

Set code “4A:0” in the

“General” group.

Check temperature sensor

(see page 110).

Lead break, temperature sensor aJ B

Check temperature sensor

(see page 110).

Without temperature sensor:

Set code “4b:0” in the

“General” group.

Short circuit, temperature sensor

/ , connection to solar control module.

Short circuit, temperature sensor aÖ

, connection to solar control module.

Short circuit, collector temperature sensor, connection of temperature sensor & at solar control module or sensor at S1 of the Vitosolic.

Short circuit, temperature sensor, connection at S3 of the Vitosolic

Check temperature sensor /

(see separate installation and service instructions).

Check temperature sensor aÖ

(see separate installation and service instructions).

Check sensor at the solar control unit (see separate installation and service instructions).

Short circuit, DHW tank temperature sensor, connection of temperature sensor % at solar control module or sensor at S2 of the Vitosolic.

Lead break, temperature sensor

/ , connection to solar control module.

Lead break, temperature sensor aÖ , connection to solar control module.

Lead break, collector temperature sensor, connection of temperature sensor & at solar control module or sensor at S1 of the Vitosolic.

Check sensor at the solar control unit (see separate installation and service instructions).

Check sensor at the solar control unit (see separate installation and service instructions).

Check temperature sensor /

(see separate installation and service instructions).

Set coding address “20” in the

“Solar” group.

Check temperature sensor aÖ (see separate installation and service instructions).

Set coding address “20” in the

“Solar” group.

Check sensor at the solar control unit (see separate installation and service instructions).

57

58

Troubleshooting, Vitotronic 300-K

Fault Codes

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Displayed fault code

9B

9C

9E

9F

AB

B1

B5

B6

BA

BC

BD

BE

BF

System characteristics Cause

Control mode.

Control mode.

Control mode.

Control mode, DHW tank may be cold.

Lead break, temperature sensor, connection at S3 of the Vitosolic

No solar DHW heating. Lead break, DHW tank temperature sensor, connection of temperature sensor % at solar control module or sensor at S2 of the Vitosolic.

No flow rate in solar circuit or flow rate too low, or temperature limiter has responded.

Solar control module or Vitosolic faulty.

Displayed if a fault occurs at these devices for which there is no fault code in the Vitotronic.

Primary store system configuration error:

Code “55:3” has been selected in the

“DHW” group, but plug aJB is not plugged in and/or codes “4C:1” and

“4E:2” in the “General” group have not been set.

Communication fault, programming unit

Internal fault

Invalid hardware recognized

Measures

Check sensor at the solar control unit

(see separate installation and service instructions).

Check sensor at the solar control unit

(see separate installation and service instructions).

Check solar circuit.

Acknowledge fault message (see separate installation and service instructions).

Check solar control unit (see separate installation and service instructions).

Insert plug aJB and check codes.

Control mode.

Control mode.

Constant mode.

Check connections and replace the programming unit if required.

Check PCB is plugged in correctly.

Check coding address

“92” in the “General” group; “92:187” must be set.

Mixing valve “Closed”. Communication fault, PCB, extension for heating circuits 2 and 3 with mixing valve

Control mode without remote control.

Control mode without remote control.

Control mode without remote control.

Control mode.

No communication via

LON.

Communication fault, remote control

Vitotrol system circuit A1 (heating circuit 1)

Communication fault, remote control

Vitotrol, heating circuit with mixing valve M2 (heating circuit 2)

Note: Code “8A:176” must be selected so that coding address “92” is displayed.

Check that the PCB and ribbon cable are plugged in, and replace PCB if required.

Check connections, lead (see separate installation and service instructions) and coding address “A0” in the “Heating circuit…” group.

Check connections, lead (see separate installation and service instructions) and coding address “A0” in the “Heating circuit…” group.

Communication fault, remote control

Vitotrol with mixing valve M3 (heating circuit 3)

Check connections, lead (see separate installation and service instructions) and coding address “A0” in the “Heating circuit…” group.

Incorrect LON communication module Replace LON communication module.

Vitotronic 300, GW5B & MW1B Installation and Service

Fault Codes

(continued)

Troubleshooting, Vitotronic 300-K

Displayed fault code

C2

CF

D3

D5

D6

D7

D8

DA

DB

DC

DD

DE

DF

System characteristics

Control mode.

Control mode.

No communication via LON.

Control mode.

Cause Measures

Lead break, KM

BUS to solar control module or

Vitosolic

Communication fault, LON communication module of control unit

Check KM BUS cable and appliance.

Without solar control unit:

Set code “54:0” in the “General” group.

Check LON communication module and replace if required.

Communication fault extension EA1 Check connections (see page 88).

Without extension EA1:

Set code “5B:0” in the “General” group.

Boiler does not log in at the cascade control unit

Check communication via participant check, leads/ cables to the Vitotronic 300, GW5B and codes.

Boiler ramps to the electronic maximum boiler water temperature limit.

Control mode.

Control mode.

Control mode.

Control mode without room influence.

Control mode without room influence.

Control mode without room influence.

Control mode without room influence.

Input DE1 at extension EA1 reports a fault

Input DE2 at extension

EA1 reports a fault

Input DE3 at extension EA1 reports a fault

Short circuit, room temperature sensor, system circuit A1

(heating circuit 1)

Short circuit, room temperature sensor, heating circuit with mixing valve M2 (heating circuit 2)

Short circuit, room temperature sensor, heating circuit with mixing valve M3 (heating circuit 3)

Lead break, room temperature sensor, system circuit A1

(heating circuit 1)

Remove fault at appliance concerned.

Remove fault at appliance concerned.

Remove fault at appliance concerned.

Check the room temperature sensor

(see page 110).

Check the room temperature sensor

(see page 110).

Check the room temperature sensor

(see page 110).

Control mode without room influence.

Control mode without room influence.

Lead break, room temperature sensor, heating circuit with mixing valve M2 (heating circuit 2)

Lead break, room temperature sensor, heating circuit with mixing valve M3 (heating circuit 3)

Check room temperature sensor (see page

110) and adjustment of the remote control

(see separate installation and service instructions).

Check room temperature sensor (see page

110) and adjustment of the remote control

(see separate installation and service instructions).

Check room temperature sensor (see page

110) and adjustment of the remote control

(see separate installation and service instructions).

59

60

Function Description

Vitotronic 300, GW5B & MW1B Installation and Service

Boiler Temperature Control of the Vitotronic 300 GW5B

Brief description

H

The boiler water temperature is regulated by starting and stopping the burner or through modulation.

H

The set boiler water temperature is specified by the

Vitotronic 300-K cascade control unit.

Functions

The boiler water temperature is captured by the following equipment:

Upper control range limits

H

High limit safety cut-out 210° F (99º C)

H

Temperature controller TR 203/212/230° F

(95/100/110º C)

H

Electronic maximum temperature limit:

– Setting range: 68 to 260° F (20 to 127º C)

– Changed via coding address “06” in the “Boiler”

group.

Lower control range limits

H

In standard mode and when frost protection is enabled, the boiler water temperature will be regulated subject

to the respective boiler.

Vitotronic 300, GW5B & MW1B Installation and Service

Function Description

Boiler Temperature Control of the Vitotronic 300, GW5B

(continued)

ON

OFF set low heat demand average heat demand high heat demand

Time

Switching hysteresis, burner

Permanent switching hysteresis

Code “04:0”

Heat demand-dependent switching hysteresis

The heat demand-dependent switching hysteresis takes the boiler load into account.

The switching hysteresis, i.e the burner runtime varies subject to actual heat demand.

ON

OFF set low heat demand average heat demand high heat demand

Time

ERB50 function

Code “04:1”

Subject to heat demand, values between 6 and 12 K result.

ON

OFF set low heat demand average heat demand high heat demand

Time

ERB80 function

Code “04:2”

Subject to heat demand, values between 6 and 20 K result.

Control sequence

Boiler goes cold

(set value −2 K)

The burner start signal is selected as the set boiler water temperature minus 2 K, and the burner starts its own monitoring program.

Note: The burner start may be delayed by a few minutes subject to the number of auxiliary circuits and the combustion type.

Boiler heats up

(Set value +2 K)

The burner shuts down.

Modulating burner:

The burner stop point is determined by the stop differential (coding address “13” in the “Boiler” group).

61

62

Function Description

Cascade Control of the Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

Brief description

The supply temperature is regulated by starting or stopping the burners or by starting/stopping individual burner stages.

H

Stand-alone control

H

Sequential control

H

Subject to the system version, we differentiate between condensing strategy and two conventional strategies.

H

With supplytemperature sensor:

Set code “3B:1” or “3B:3” in the “Cascade” group.

The control deviation is calculated from the set supply temperature and the actual supply temperature to determine the start and shutdown criteria.

H

Without supply temperature sensor:

Set code “3B:0” or “3B:2” in the “Cascade” group.

To determine the start and stop criteria, the control deviation is calculated from the set boiler water temperature and the estimated average actual boiler water temperature of the currently active boilers.

Only boilers with open isolation valves are taken into consideration.

Set supply temperature

The set supply temperature is determined from the following parameters:

H

Set supply temperature of system circuit A1 (heating circuit 1) and heating circuits with mixing valve M2

(heating circuit 2) and M3 (heating circuit 3).

H

Set supply temperature of further consumers.

H

Set DHW temperature.

H

External demands.

Upper control range limits:

Maximum limit of the system supply temperature

(coding address “37” in the “Cascade” group).

Lower control range limits:

Minimum limit of the system supply temperature

(coding address “36” in the “Cascade” group).

Sequential control

H

With supply temperature sensor.

H

Set code “3B:4” in the “Cascade” group.

H

The control strategy is set automatically to conventional strategy 2, code “3C:2” (see page 64).

H

The cascade control unit regulates to the specified set supply temperature by stipulating the output for each individual boiler. The lead boiler can be operated in modulating mode. All other boilers are operated in two stages via a specified output (incl. modulating burners).

Cascading Layouts

Boilers connected in parallel

H

Without and with supply temperature sensor.

H

Set code “3B:0” or “3B:1” in the “Cascade” group.

H

The cascade control specifies the set boiler water temperature for all currently active boilers. Every boiler control unit regulates to the specified set value.

Control strategies

Condensing strategy

Benefit:

Optimum utilisation of the condensing effect and long burner runtimes.

Set code “3C:0” in the “Cascade” group.

It is the aim of the condensing strategy to operate as many boilers as possible at the lowest output level.

The following control strategies are available:

H

H

H

Condensing strategy

Conventional strategy 1 (see page 64)

Conventional strategy 2 (see page 64)

Boilers connected in series

H

Without and with supply temperature sensor.

H

Set code “3B:2” or “3B:3” in the “Cascade” group.

H

The control strategy is set automatically to conventional strategy 2, code “3C:2” (see page 64).

H

The cascade control specifies the set boiler water temperature for all currently active boilers. Every boiler control unit regulates to the specified set value.

If the lead boiler (condensing boiler) does not achieve the specified set value, it will only act to control the return temperature of the conventional boiler downstream. The conventional boiler is started late and is also shut down late.

H

Starting criterion:

Boilers are started via an output statement

(code “3D:1” in the “Cascade” group).

An additional boiler will start if the currently required output can also be achieved by the currently active boilers plus the next boiler in the boiler sequence (see page 63).

H

Shutdown criterion:

The boilers are shut down via a shutdown integral.

The shutdown criterion is met when the shutdown integral exceeds a limit set via coding address “46” in the “Cascade” group and the boiler started last will be shut down.

Vitotronic 300, GW5B & MW1B Installation and Service

Cascade Control of the Vitotronic 300-K

(continued)

Function Description

Conventional strategy 1

Benefit:

As few boilers as possible are active.

Set code “3C:1” in the “Cascade” group.

Conventional boilers are preferably operated at their upper output range, to reliably prevent formation of condensate due to low return temperatures. With this strategy, an additional boiler will only be started if the maximum output of all currently active burners is insufficient to achieve the set supply temperature. A boiler will be shut down when the remaining boilers can achieve the required output on their own.

H

Starting criterion:

The boilers are started via a starting integral. The next boiler in the boiler sequence will be started if the value set in coding address “45” in the “Cascade” group is exceeded (see page 93).

H

Shutdown criterion:

Boilers are shut down via an output statement (code

“3D:1” in the “Cascade” group). A boiler is shut down when the currently required output can be achieved without the boiler that was started last.

Condensing strategy (code “3C:0” in the “Cascade” group)

Example for the different control strategies

Two-boiler system with modulating burners:

H

Boiler 1: 100% rated output (base load set to 33%)

H

Boiler 2: 100% rated output (base load set to 33%)

Starting

Conventional strategy 2

Benefit:

Long burner runtimes.

Code “3C:2” in the “Cascade” group (factory set condition).

An additional boiler will only be started if the maximum output of all currently active burners is insufficient to achieve the set supply temperature.

A boiler will be shut down if the burners were returned to their minimum output because of a large negative control deviation and the output is still too high.

H

Starting criterion:

The boilers are started via a starting integral. The next boiler in the boiler sequence will be started if the value set in coding address “45” in the “Cascade” group is exceeded (see page 93).

H

Shutdown criterion:

The boilers are shut down via a shutdown integral.

The shutdown criterion is met when the shutdown integral exceeds a limit set via coding address “46” in the “Cascade” group and the boiler started last will be shut down.

Shutdown

t

63

64

Function Description

Vitotronic 300, GW5B & MW1B Installation and Service

Cascade Control of the Vitotronic 300-K

(continued)

Conventional strategy 1 (code “3C:1” in the “Cascade” group)

Starting

Conventional strategy 2 (code “3C:2” in the “Cascade” group)

Starting

Shutdown

Shutdown

Vitotronic 300, GW5B & MW1B Installation and Service

Heating Circuit Control Unit of the Vitotronic 300-K

Function Description

Brief description

H

The control unit has control circuits for one system circuit A1 (heating circuit 1) and two heating circuits with mixing valve M2 (heating circuit 2) and M3

(heating circuit 3).

H

The set supply temperature of every heating circuit is determined from the following parameters:

– Outside temperature

– Set room temperature

– Operating mode

– Heating curve slope and shift

H

The supply temperature of the system circuit corresponds to the common system supply temperature.

H

The supply temperature of the heating circuits with mixing valve is regulated by the gradual opening or closing of the mixing valves. The mixing valve motor control changes the actuating and pause times subject to the control differential (control deviation).

Functions

The system circuit is subject to the boiler water temperature and its control range limits.

The heating circuit pump is the only actuator.

The supply temperature of the heating circuits with mixing valve is recorded by the supply temperature sensor of the relevant heating circuit.

H

Upper control limit: Electronic maximum supply temperature limit Coding address “C6” in the “Heating circuit…” group.

H

Lower control range limit: Electronic minimum supply temperature limit Coding address “C5” in the “Heating circuit…” group.

Outside temperature

A heating curve must be set for matching the control unit to the building and the heating system.

The heating curve characteristics determine the set boiler water temperature subject to outside temperature. An average outside temperature is used for control purposes.

This comprises the actual and the adjusted outside temperature.

Room temperature

In conjunction with the remote control and room temperature hook-up (coding address “B0” in the

“Heating circuit…” group):

Compared with the outside temperature, the room temperature has a greater influence on the set boiler water temperature (changed via coding address “B2” in the “Heating circuit…” group).

In conjunction with heating circuits with mixing valve:

For control differentials (actual value deviation) above

2 K room temperature, the influence can be increased again (coding address “B6” in the “Heating circuit…” group):

H

Quick heat-up

The set room temperature must be raised by at least

2 K by the following measures:

– Enabling party mode

– Changing from central heating with reduced

temperature to central heating with standard

temperature

– Start optimization (coding address “B7” in the

“Heating circuit…” group)

Quick heat-up will stop when the set room temperature has been reached.

Time program

In accordance with the time program in the “Heating and DHW” heating program, the control unit regulates between “Central heating at standard room temperature” and “Central heating at reduced room temperature”.

Every operating mode has its own set level.

4 time phases per day can be selected.

H

Quick setback

The set room temperature must be reduced by at least

2 K by the following measures:

– Enabling economy mode

Changing from central heating with standard temperature to central heating with reduced temperature

–

“Heating circuit…” group)

Quick setback will stop when the set room temperature has been reached.

65

66

Function Description

Vitotronic 300, GW5B & MW1B Installation and Service

Heating Circuit Control Unit of the Vitotronic 300-K

(continued)

DHW temperature

Priority control

H

With priority control: (code “A2:2” in the “Heating circuit…” group):

The set supply temperature is set to 32° F (0° C)

during DHW tank heating. The mixing valve closes and

the heating circuit pump is switched off.

H

Without priority control: The heating circuit control unit continues to operate with the same set value.

System dynamics

You can influence the control characteristics of the mixing valves via coding address “C4” in the “Heating circuit…” group.

Central control

Central control for a heating circuit can be programmed via coding address “7A” in the “General” group.

The heating and holiday program then applies to all additional heating circuits of the system.

For these heating circuits, when the heating and holiday program is enabled, “Central control” is displayed. Any holiday programs that may have been set will be deleted.

Party and economy modes cannot be enabled on all control units.

Heating circuit pump logic (economy mode)

The heating circuit pump is switched off [set supply temperature set to 32° F (0° C)] if the outside temperature exceeds the value selected via coding address “A5” in the “Heating circuit…” group.

Extended economy mode

The heating circuit pump is switched off [set supply temperature set to 32° F (0° C)] if one of the following criteria is met:

H

The adjusted outside temperature exceeds the value selected via coding address “A6” in the “Heating circuit…” group.

H

The heating circuit pump can be switched off for a time calculated by the control unit when changing over from heating mode to reduced mode.

Requirement:

– There is no risk of frost.

– must be set to 0.

The idle period can be individually adjusted via coding

address “A9” in the “Heating circuit…” group.

Note: If, during the pump idle period, the system is switched over to heating mode or the set room temperature is increased, the heating circuit pump is switched on, even if the period has not yet expired.

H

The actual room temperature exceeds the value selected via coding address “B5” in the “Heating circuit…” group.

H

The mixing valve has been closed for 12 min. (mixing valve economy function, coding address “A7” in the

“Heating circuit…” group).

Frost protection

The supply temperature is maintained in accordance with the heating curve for the reduced set room temperature, but at min. 50° F (10° C).

A variable frost limit can be set in accordance with coding address “A3” in the “Heating circuit…” group.

Vitotronic 300, GW5B & MW1B Installation and Service

Heating Circuit Control Unit of the Vitotronic 300-K

(continued)

Function Description

Outside temperature

Legend

A

Maximum supply temperature limit (coding address

“37” in the “Cascade” group)

B Slope = 1.8 for system circuit

C Slope = 1.2 for heating circuit with mixing valve

D Common supply temperature (at a differential temperature = 8 K)

E

Lower common supply temperature

Supply temperature control

Differential temperature:

The differential temperature is adjustable via coding address “9F” in the “General” group, factory set condition

8 K.

The differential temperature is the value by which the common supply temperature should be higher than the highest currently required supply temperature of the heating circuit with mixing valve.

H

System with only one heating circuit with mixing valve:

The common set supply temperature is regulated automatically to 8 K above the set supply temperature of the heating circuit with mixing valve.

H

System with system circuit and heating circuits with mixing valve:

The common set supply temperature operates in accordance with its own heating curve. The differential temperature of 8 K towards the set supply temperature of the heating circuits with mixing valve is set at the factory.

Raising the reduced room temperature

During operation with reduced room temperature, the reduced set room temperature can be automatically raised subject to the outside temperature. The temperature is raised in accordance with the selected heating curve, but no higher than the set standard room temperature.

The outside temperature limits for the start and end of the temperature raising can be adjusted via coding addresses

“F8” and “F9” in the “Heating circuit…” group.

Example using the settings in the factory set condition

Reducing the heat-up time

During the transition from operation with reduced room temperature to operation with standard room temperature, the boiler water or supply temperature will be raised in accordance with the selected heating curve. The boiler water or supply temperature increase can be automatically raised.

The value and duration of the additional increase of the set boiler water or supply temperature can be adjusted in coding addresses “FA” and “FB” in the “Heating circuit…” group.

Boiler water or Supply temperature

Set room temperature

Outside temp.

Legend

A Heating curve for operation with standard room

temperature

B Heating curve for operation with reduced room

temperature

67

68

Function Description

Vitotronic 300, GW5B & MW1B Installation and Service

Heating Circuit Control Unit of the Vitotronic 300-K

(continued)

Example using the settings in the factory set condition

Time in h

Legend

A

Start of operation with standard room temperature

B Set boiler water or supply temperature in accordance with the selected heating curve

C Set boiler water or supply temperature in accordance with coding address “FA”:

122° F + 20% = 146° F

(50° C + 20% = 60° C)

D Duration of operation with raised set boiler water or supply temperature in accordance with coding address

“FB”: 60 min.

Control sequence

Mixing valve circuit

The mixing valve motor will not be controlled within the

“neutral zone” (±1 K).

Supply temperature drops

(Set value −1 K)

The mixing valve motor receives the signal “Mixing valve open”. The signal duration lengthens with an increasing control differential.

The duration of pauses reduces with an increasing control differential.

Supply temperature rises

(Set value +1 K)

The mixing valve motor receives the signal “Mixing valve closed”. The signal duration lengthens with an increasing control differential.

The duration of pauses reduces with an increasing control differential.

Vitotronic 300, GW5B & MW1B Installation and Service

DHW Tank Temperature Control of the Vitotronic 300-K

Function Description

Brief description

H

The DHW tank temperature control is a constant temperature control. This is the result of starting and stopping the circulation pump for DHW tank heating.

The switching differential is ±2.5 K.

H

When the DHW tank is heated, a set supply temperature is specified that is 20 K higher than the set

DHW temperature (adjustable via coding address “60” in the “DHW” group).

Frost protection

The DHW tank will be heated to 68° F (20° C) if the

DHW temperature sinks below 41° F (5° C).

Auxiliary function for DHW heating

This function is activated by providing a second set DHW temperature via coding address “58” in group “DHW” and activating the fourth DHW phase for DHW heating.

Functions

Time program

An automatic or an individual time program may be selected for DHW heating and the DHW recirculation pump.

Compared with the heating circuit heatup phase, DHW heating starts 30 min. earlier in automatic mode.

The individual time program enables up to 4 time phases per day to be set for DHW heating and the DHW recirculation pump for every day of the week.

All DHW tank heating sequences will be completed independently of the time program.

In conjunction with coding address “7F” in the “General” group

H

Detached house Code

“7F:1”:

– Automatic mode

The heating times for heating circuit 1 are applied to systems with two or three heating circuits.

– Individual time program

The time phases for DHW heating and the DHW recirculation pump have the same effect on all heating circuits.

H

Apartment building

Code “7F:0”:

– Automatic mode

For systems with two or three heating circuits, the heating times for the relevant heating circuit will be applied.

– Individual time program

The time phases for DHW heating and the DHW recirculation pump can be adjusted individually for each heating circuit.

Set DHW temperature

The set DHW temperature can be adjusted between 50 and 140° F (10 and 60° C).

The set value range can be extended to 203° F (95 ºC) via coding address “56” in the “DHW” group.

The set default value of the programming unit and/or the

Vitotrol 300A remote control units can be allocated via coding address “66” in the “DHW” group.

DHW recirculation pump

This delivers hot water to the draw-off points at adjustable times.

Four time phases can be selected at the control unit for every day.

Auxiliary circuits

DHW heating in conjunction with the heating circuits can be disabled or enabled by changing over the heating program (see coding address “D5” in the “Heating circuit

…” group).

System with primary store system

The above functions also apply in conjunction with primary store systems.

Set the following codes:

“55:3” in the “DHW” group; “4C:1”, “4E”:

2 in the “General” group.

System with solar control unit

A third set DHW temperature can be specified via coding address “67” in the “DHW” group.

The DHW tank is only reheated by the boiler if the temperature falls below this value.

Priority control

H

With priority control: (code “A2:2” in the “Heating circuit…” group):

The set supply temperature is set to 32° F (0° C)

during DHW tank heating. The mixing valve closes

and the heating circuit pump is switched off.

H

Without priority control:

The heating circuit control unit continues to operate with the same set value.

69

70

Function Description

Vitotronic 300, GW5B & MW1B Installation and Service

DHW Tank Temperature Control of the Vitotronic 300-K

(continued)

Control sequence

Code “55:0” in the “DHW” group, DHW tank heating

The DHW tank goes cold (set value −2.5 K, adjustable via coding address “59”):

H

The common set supply temperature is set 20 K higher than the set DHW temperature (adjustable via coding address “60”).

The DHW tank is hot (set value +2.5 K):

H

The common set supply temperature is returned to the set weather-compensated value.

H

Pump run-on:

The circulation pump runs on after DHW tank heating

until one of the following criteria is met:

– The set DHW temperature is exceeded by 5 K.

– The set max. run-on time is reached (coding address

“62”).

H

Without pump run-on (code “62:0”).

Code “55:2” in the “DHW” group, DHW tank temperature control with 2 DHW tank temperature sensors

DHW tank temperature sensor 1 enables the circulation pump for DHW tank heating and is evaluated for stop conditions during the pump run-on time.

DHW tank temperature sensor 2:

The DHW tank heating will be switched on early if a lot of hot water is drawn off. The DHW tank heating will be switched off early if no hot water is drawn off.

DHW tank goes cold:

H

Set value −2.5 K, adjustable via coding address “59”

or

H

Actual DHW temperature at sensor 2 < set DHW temperature x factor for start time (adjustment via coding address “69”)

The DHW tank is hot:

H

Set value +2.5 K and

H

Actual DHW temperature at sensor 2 > set DHW temperature x factor for stop time (adjustment via coding address “68”)

Code “55:1” in the “DHW” group, adaptive DHW tank heating

With adaptive DHW tank heating, the speed of the temperature rise during DHW heating is taken into account.

The DHW tank goes cold (set value −2.5 K, adjustable via coding address “59”):

H

The common set supply temperature is set 20 K higher than the set DHW temperature (adjustable via coding address “60”).

The DHW tank is hot:

H

The control unit checks whether the boiler will be required to supply heat after the DHW tank has been heated up or whether residual boiler heat should be transferred to the DHW tank.

Accordingly, the control unit determines the burner and circulation pump stop times to prevent the set DHW temperature being substantially exceeded after the

DHW tank has been heated up.

Code “55:3” in the “DHW” group, DHW tank temperature control, primary store system

The DHW tank goes cold (set value −2.5 K, adjustable via coding address “59”):

H

The common set supply temperature is set 20 K higher than the set DHW temperature (change via coding address “60”).

H

The primary pump in the primary store system starts.

H

The 3-way mixing valve opens and then regulates to the specified set value.

H

The circulation pump for DHW tank heating cycles

(briefly switches on and off) until the set supply temperature has been reached (set DHW temperature

+ 5 K). Then it runs constantly. If, during heating, the actual value falls below the required set temperature, the circulation pump for DHW tank heating will temporarily cycle again.

The DHW tank is hot:

H

DHW tank temperature sensor 1:

Actual value ≥ set value and

DHW tank temperature sensor 2:

Actual value > set value −1.5 K:

H

The common set supply temperature is returned to the set weather-compensated value.

H

The circulation pump for DHW tank heating stops immediately when the 3-way mixing valve is fully opened.

or

H

The circulation pump for DHW tank heating stops after expiry of the run-on time that is selected via code “62”.

Vitotronic 300, GW5B & MW1B Installation and Service

Calling up Coding Level 1

Coding 1, Vitotronic 300, GW5B

Prior to coding the Vitotronic 300 GW5B, ensure the boiler is in cascade mode. Refer to page 25.

For the Vitotronic 300 GW5B, see boiler

Service Instructions

1. Press and OK for approximately 4 seconds.

to scroll to service functionsand select

OK.

to scroll to multi-boiler systemand select

OK.

5. Allow control to restart.

6.

Upon restart, use to select ‘language’.

Note: Codes are displayed as plain text.

Codes that have no function due to the heating

system equipment level or the setting of other

codes are not displayed.

1. Press OK and for approximately 4 seconds.

2. “Coding level 1”

3. Select group of required coding address:

“General”

—

— “All codes std. device”

In this group, all coding addresses from coding level 1

4. Select coding address.

5. Select value according to the following tables and with

6. If you want to reset all codes to their factory setting:

Select “Standard setting” in “Coding level 1”.

Note: This also resets codes from coding level 2.

Group 1 “General”

Coding

Coding in the factory set condition

System design

00:0 Set automatically if code “01:2” is set.

Boiler control unit is linked into the cascade.

Servomotor runtime

40:…

Runtime, isolation valve servomotor at plug gSA1.

Factory set condition specified by boiler coding card.

Participant no.

77:1

8F:0

LON participant number. If this address does not appear, power down the control and install the LON card and restart.

Operation in the standard menu and extended menu enabled.

Note: The respective code is only activated when you exit the service menu(see page 37).

Possible change

00:1

40:5 to

40:199

77:1 to

77:99

8F:1

8F:2

No function.

Runtime adjustable from 5 to 199 sec.

LON participant number, adjustable from 1 to 99.

Operation in standard menu and extended menu blocked.

Operation enabled in the standard menu and blocked in the extended menu.

71

72

Coding 1, Vitotronic 300, GW5B

Group 2 “Boiler”

Vitotronic 300, GW5B & MW1B Installation and Service

Coding

Coding in the factory set condition

System design

01:2 Multi boiler system with cascade control via LON.

Possible change

01:1

01:3

Boiler

07:1 Consecutive boiler number in multi boiler system.

07:2 to

07:4

Flue gas monitor

1F:0 With flue gas temperature sensor:

Flue gas temperature is not monitored for service display.

1F: 34 (1) to

1F: 482° F

(250° C)

Burner service in 100 hour

21:0 No service interval (hours run) selected.

21:1 to

21:100

Single boiler system.

Do not adjust.

Consecutive boiler number in multi boiler system.

When the limit for the flue gas temperature is exceeded, is displayed.

The number of hours run before the burner should be serviced is adjustable from 100 to 10,000 h;

1 step 100 h

Service interval in months

23:0 No interval for service.

to

23:24

Interval adjustable from 1 to 24 months.

Service status

24:0

No display.

24:1

display (the address is automatically set and must be manually reset after a service has been carried out).

Vitotronic 300, GW5B & MW1B Installation and Service

Calling up Coding Level 2

Coding 2, Vitotronic 300, GW5B

Note: At coding level 2, all codes are accessible, including the codes at coding level 1.

Codes that have not been assigned due to the heating system equipment level or the setting of other codes are not displayed.

1. Press simultaneously for approximately

2. Press simultaneously for approximately

3. “Coding level 2”

4. Select group of required coding address:

“General”

5. Select coding address.

6. Select value according to the following tables and confirm with “OK”.

7. If you want to reset all codes to their factory setting:

Select “Standard setting” in “Coding level 2”.

Note: This also resets codes at coding level 1.

73

74

Coding 2, Vitotronic 300, GW5B

Group 1 “General”

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding

Coding in the factory set condition

00:0 Set automatically if code “01:2” is set.

Boiler control unit is linked into the cascade.

30:0

31:0

Without plug-in adaptor 1, external safety equipment.

Without plug-in adaptor 2, external safety equipment.

32:0 Without extension AM1.

33:1

34:0

40:…

4A:0

Function output A1 at extension AM1:

Heating circuit pump.

Function output A2 at extension AM1:

DHW recirculation pump.

Runtime, isolation valve servomotor at plug gSA1.

Factory set condition specified by boiler coding card.

Sensor aJA not available.

Possible change

00:1 No function.

30:1

31:1

32:1

33:3

34:3

40:5 to

40:199

4A:1

With plug-in adaptor 1, external safety equipment; automatic recognition.

With plug-in adaptor 2, external safety equipment; automatic recognition.

With extension AM1; automatic recognition.

Circulation pump for neutralizing system or flue gas/ water heat exchanger.

Circulation pump for neutralizing system or flue gas/ water heat exchanger.

Runtime adjustable from 5 to 199 sec.

4B:0

4C:2

4D:1

4E:0

4F:5

Sensor aJB not available.

Connection at plug sÖ:

Switching contact,

Therm-Control.

Connection at plug sL:

Shunt pump.

Connection at plug gS:

Motor for isolation valve.

4B:1

4C:1

4C:3

4D:2

4D:3

4E:1

Run-on time, shunt or boiler circuit pump

5 min.

4E:2

4F:0

4F:1 to

4F:60

Sensor aJA available (e.g. Therm-

Control temperature sensor); automatic recognition.

Sensor aJB available (e.g. return temperature sensor T2); automatic recognition.

Do not adjust.

Circulation pump – flue gas/water heat exchanger.

Boiler circuit pump.

Boiler circuit pump with isolation valve function.

Motor for 3-way mixing valve for return temperature control.

Do not adjust.

No pump run-on.

Run-on time adjustable from 1 to 60 min.

Vitotronic 300, GW5B & MW1B Installation and Service

Group 1 “General”

(continued)

Coding 2, Vitotronic 300, GW5B

Coding

Coding in the factory set condition

52:0

54:0

Do Not Adjust

Do Not Adjust

5B:0

5C:0

Without extension EA1.

Function, output aBJ at extension EA1:

Central fault message.

5D:0

5E:0

Function input DE1 at extension EA1:

No function.

Function input DE2 at extension EA1:

No function.

5E:2

5E:3

5E:4

5E:5

5E:6

5C:5

5D:1

5D:2

5D:3

5D:4

5D:5

5D:6

5E:1

Possible change

—

—

5B:1

5C:1

—

—

With extension EA1; automatic recognition.

No function.

5C:2

5C:3

5C:4

No function.

No function.

No function.

No function.

No function.

No function.

External blocking.

External blocking with fault message.

Fault message input.

No function.

No function.

No function.

External blocking.

External blocking with fault message.

Fault message input.

No function.

75

76

Coding 2, Vitotronic 300, GW5B

Group 1 “General”

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding in the factory set condition

5F:0 Function input DE3 at extension EA1:

No function.

6C:0

6D:0

76:0

77:1

78:1

79:0

No run-on time neutralizing system.

No run-on time neutralizing system.

Without LON communication module.

LON participant number.

LON communication enabled.

Control unit is not fault manager.

5F:5

5F:6

6C:1 to

6C:255

6D:1 to

6D:255

76:1

Possible change

5F:1

5F:2

5F:3

5F:4

77:1 to

77:99

78:0

79:1

No function.

No function.

External blocking.

External blocking with fault message.

Fault message input.

No function.

Run-on time neutralizing system at output A1 at extension AM1, adjustable from 1 to 255 sec.

Run-on time neutralizing system at output A2 at extension AM1, adjustable from 1 to 255 sec.

With LON communication module; automatic recognition.

LON participant number, adjustable from

1 to 99.

LON communication disabled.

Control unit is fault manager.

Vitotronic 300, GW5B & MW1B Installation and Service

Group 1 “General”

(continued)

Coding 2, Vitotronic 300, GW5B

Coding in the factory set condition

80:6

88:0

8A:175

8B:0

8F:0

93:0

95:0

98:1

9B:0

9C:20

9D:0

If a fault occurs for at least

30 sec., a fault message is displayed.

Temperature displayed in °C (Celsius).

Do Not Adjust.

Do Not Adjust.

Operation in the standard menu and extended menu enabled.

Note: The respective code is only activated when you exit the service menu (see page 50).

Fault messages during emissions test function/service display do not affect central fault messages.

Do Not Adjust.

Viessmann system number (in conjunction with monitoring several systems via Vitocom 300).

Do not adjust.

Monitoring LON participants:

If there is no response from a participant, values specified by the control unit are used after 20 min and a fault message is issued

Do not adjust.

95:1

98:1 to

98:5

9C:0

9C:5 to

9C:60

—

—

Possible change

88:0

80:2 to

80:199

88:1

8F:1

8F:2

—

—

Immediate fault message.

The minimum fault duration until a fault message is issued is adjustable from

10 to 995 sec;

1 step 5 sec.

Temperature displayed in °F

(Fahrenheit).

—

—

Operation in standard menu and extended menu blocked.

Operation enabled in the standard menu and blocked in the extended menu.

93:1 Fault messages during emissions test function/ service display affect central fault messages.

—

System number adjustable from 1 to 5.

No monitoring

—

Time adjustable from 5 to 60 min.

—

77

78

Coding 2, Vitotronic 300, GW5B

Group 2 “Boiler”

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding in the factory set condition

01:2 Multi boiler system with cascade control via

LON.

07:1 Consecutive boiler number in multi boiler system.

0C:5

0D:2

1F:0

21:0

23:0

24:0

2B:5

2C:5

2D:0

Modulating isolation valve, independent of the set boiler water temperature.

With Therm-Control, affects the isolation valve (function disabled with code “0C:1”).

With flue gas temperature sensor:

Flue gas temperature is not monitored for service display.

No service interval (hours run) selected.

No interval for service.

No display.

Maximum preheating time of the isolation valve

5 min.

Maximum run-on time of the isolation valve

5 min.

Shunt pump control function only “ON” if the boiler is enabled.

2B:1 to

2B:60

2C:0

2C:1 to

2C:60

2D:1

Possible change

01:1

01:3

07:2 to

07:4

0C:0

0C:1

Single boiler system.

Do not adjust.

Consecutive boiler number in multi boiler system.

No function.

Constant return temperature control.

0C:2

0C:3

0C:4

0D:0

0D:1

Time-controlled isolation valve.

Isolation valve switching, subject to the set boiler water temperature.

Modulating isolation valve, subject to the set boiler water temperature.

Without Therm-Control.

With Therm-Control, affects the mixing valves of downstream heating circuits.

1F: 34 (1) to

1F: 482°F

(250°C)

When the flue gas temperature limit is exceeded, is displayed.

21:1 to

21:100

The number of hours run before the burner should be serviced is adjustable from 100 to

10,000 h.

1 step 100 h.

Interval adjustable from 1 to 24 months.

23:1 to

23:24

24:1

2B:0

display (the address is automatically set and must be manually reset after a service has been carried out).

No preheating time.

Preheating adjustable from 1 to 60 min.

No run-on time.

Run-on time adjustable from 1 to 60 min.

Shunt pump control function permanently

“ON”.

Vitotronic 300, GW5B & MW1B Installation and Service

Calling up Coding Level 1

Coding 1, Vitotronic 300-K

Note:

H

The codes are displayed as plain text.

H

Codes that have no function due to the heating system equipment level or the setting of other codes are not displayed.

H

Heating systems with one system circuit and one or two heating circuits with mixing valve: In the following, the system circuit is designated “Heating circuit 1” and the heating circuits with mixing valve as “Heating circuit 2” or “Heating circuit 3”.

If the heating circuits were given individual designations, the selected designation and “HC1”,

“HC2” or “HC3” appear instead.

1. Press OK and simultaneously for approx. 4 sec.

2. “Coding level 1”

3. Select group of required coding address:

H

“General”

H

“Cascade”

H

“DHW”

H

“Solar”

H

“Heating circuit 1/2/3”

H

“All codes std device”

In this group, all coding addresses from coding

level 1 (except the coding addresses from the

“Solar” group) are displayed in ascending order.

4. Select coding address.

5. Select value according to the following tables and confirm with OK.

6. If you want to reset all codes to their factory set condition:

Select “Standard setting” in “Coding level 1”.

Note: This also resets codes from coding level 2.

79

80

Coding 1, Vitotronic 300-K

“General” Group

Vitotronic 300, GW5B & MW1B Installation and Service

Coding

Coding in the factory set condition

System design

00:1 One system circuit A1 (heating circuit

1), without DHW heating

Possible change

00:2 to

00:10

For system schemes, see the following table.

4

5

2

3

Value address

00: …

6

7

8

9

10

Description

One system circuit A1 (heating circuit 1) with DHW heating (automatic recognition)

One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating

One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating

One system circuit A1 (heating circuit 1) One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating (automatic recognition)

One system circuit A1 (heating circuit 1) One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating (automatic recognition)

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) without DHW heating

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) with DHW heating

One system circuit A1 (heating circuit 1)

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) without DHW heating (automatic recognition).

One system circuit A1 (heating circuit 1)

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) with DHW heating (automatic recognition).

Coding in the factory set condition

Servomotor runtime

40:125 3-way mixing valve servomotor runtime in conjunction with permanent return temperature control at plug gSA1 125 s.

Participant no.

77:5 LON participant number.

Possible change

40:5 to

40:199

77:1 to

77:99

Runtime adjustable from 5 to 199 sec.

LON participant number, adjustable from

1 to 99:

1 — 4 = Boiler control unit

5 = Cascade control unit

10 — 98 = Vitotronic 200-H

99 = Vitocom

Detached house/apartment building

7F:1 Detached house.

7F:0 Apartment building.

Separate adjustment of holiday program and time program for DHW heating possible.

General

8F:0 Operation in the standard menu and extended menu enabled.

Note: The relevant code is only enabled when you exit the service level

(see page 51)

Set supply temperature for external demand

9B:70 Set supply temperature for external demand 158° F (70° C).

8F:1

8F:2

9B:0

9B:1 to

9B:127

Operation in the standard menu and extended menu blocked.

Operation enabled in the standard menu; blocked in the extended menu.

No default set value.

Set supply temperature adjustable from

34 to 260° F (1 to 127° C).

Vitotronic 300, GW5B & MW1B Installation and Service

“Cascade” Group

Coding 1, Vitotronic 300-K

Coding

Coding in the factory set condition

Number of boilers in cascade

35:4 4 boilers connected to the Vitotronic

300-K.

Possible change

35:1 to

35:4

Min. system supply temperature

36:0 Electronic minimum system supply temperature limit set to 32° F (0° C).

36:1 to

36:127

Max. system supply temperature

37:80 Electronic maximum system supply temperature limit set to 176° F (80° C).

37:20 to

37:127

1 to 4 boilers connected to the

Vitotronic 300-K.

Minimum limit adjustable from 32 to

260° F (0 to 127° C).

Maximum limit adjustable from 68 to

260° F (20 to 127° C).

Note: Value must not be higher than the lowest value of coding address

“06” in the “Boiler” group of every Vitotronic 300, GW5B.

Control type

3B:1 Stand-alone parallel boiler circuit with supply temperature sensor

(see page 62).

3B:0

3B:2

3B:3

3B:4

Stand-alone parallel boiler circuit without supply temperature sensor (see page 62).

Stand-alone serial boiler circuit without supply temperature sensor (see page 62).

Stand-alone serial boiler circuit with supply temperature sensor (see page 62).

Sequential control with supply temperature sensor (see page 62).

Control strategy

3C:2 Conventional strategy 2 (see page 64).

3C:0

3C:1

Condensing strategy (see page 63).

Conventional strategy 1 (see page 64).

“DHW” Group

Coding

Coding in the factory set condition

DHW

67:40 For solar DHW heating:

Set DHW temperature 104° F (40° C).

Reheating is suppressed above the selected set temperature (DHW heating by the boiler only if solar energy is not sufficient).

Possible change

67:0

67:10 to

67:95

No third set value.

Set DHW temperature adjustable from 50 to 203° F (10 to 95° C) (limited by boiler specific parameters).

Observe the setting of coding address “56”.

Enable DHW recirculation pump

73:0 DHW recirculation pump:

“ON” according to time program.

73:1 to

73:6

73:7

“ON” from once per hour for 5 min up to

6 times per hour for 5 min. during the time program.

Constantly “ON”.

81

82

Coding 1, Vitotronic 300-K

“Solar” Group

Vitotronic 300, GW5B & MW1B Installation and Service

Only in conjunction with solar control module, type SM1.

Coding

Coding in the factory set condition

Speed control solar circuit pump

02:0 Solar circuit pump (multi stage) without speed control by solar control module SM1.

Possible change

02:1

02:2

Solar circuit pump (multi stage) is speedcontrolled with wave pack control.

Solar circuit pump is speed-controlled with

PWM control.

DHW tank maximum temperature

08:60 The solar circuit pump stops when the actual DHW temperature reaches the maximum DHW tank temperature 140° F

(60° C).

Stagnation time reduction

0A:5 To protect system components and heat transfer medium: the speed of the solar circuit pump is reduced if the actual DHW temperature is 5 K below the maximum

DHW tank temperature.

Flow rate solar circuit

0F:70 The solar circuit flow rate at maximum pump speed is 7 l/min.

08:10 to

08:90

0A:0

0A:1 to

0A:40

0F:1 to

0F:255

The maximum DHW tank temperature is adjustable from 50 to 194° F (10 to 90° C).

Stagnation time reduction is disabled.

Value for stagnation time reduction is adjustable from 1 to 40 K.

Flow rate adjustable from 0.1 to 25.5 l/min;

1 step 0.1 l/min.

Extended solar control functions

20:0 No extended control functions enabled.

20:1

20:2

20:3

20:4

20:5

20:6

20:7

20:8

20:9

Additional function for DHW heating.

Differential temperature control 2.

Differential temperature control 2 and auxiliary function.

Differential temperature control 2 for central heating backup.

Thermostat function.

Thermostat function and auxiliary function.

Solar heating via external heat exchanger without additional temperature sensor.

Solar heating via external heat exchanger with additional temperature sensor.

Solar heating of two DHW tanks.

Vitotronic 300, GW5B & MW1B Installation and Service

Coding 1, Vitotronic 300-K

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

Coding

Coding in the factory set condition

Priority DHW heating

A2:2 DHW tank priority applicable to heating circuit pump and mixing valve.

Possible change

A2:0

A2:1

Without DHW tank priority applicable to heating circuit pump and mixing valve.

DHW tank priority applies only to the mixing valves.

Economy function outside temperature

A5:5 With heating circuit pump logic function

(economy circuit): Heating circuit pump “OFF” when the outside temperature (AT) is 1 K higher than the set room temperature (RT

AT > RT set

+ 1 K set

)

A5:0

A5:1 to

A5:15

Without heating circuit pump logic function.

With heating circuit pump logic function:

Heating circuit pump “OFF”; see the following table.

Pump idle time, transition reduced mode. Operation

A9:7 With pump idle time (heating circuit pump

“OFF”).

(See function description on page 51).

Possible change

A7:1 With mixing valve economy function (extended heating circuit pump logic):

Heating circuit pump also “OFF”:

— If the mixing valve has been closed for longer than 20 min.

Heating circuit pump “ON”:

— If the mixing valve changes to control function.

— If there is a risk of frost.

A9:0

A9:1 to

A9:15

Without pump idle time.

With pump idle time; adjustable from 1 to 15.

1: short idle period

15: long idle period

83

Coding 1, Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

(continued)

Coding in the factory set condition

Extended economy function mixing valve

Weather-compensated/room temperature hook-up

B0:0 With remote control:

*2

Heating mode/reduced mode: weathercompensated.

Possible change

B0:1

B0:2

B0:3

Economy function room temperature

B5:0 With remote control:

No room temperature dependent heating circuit pump logic function.

*2

B5:1 to

B5:8

Heating mode: weather-compensated

Reduced mode: with room temperature hook-up

Heating mode: with room temperature hook-up

Reduced mode: weather-compensated

Heating mode/reduced mode: with room temperature hook-up

Heating circuit pump logic function, see the following table.

84

Coding in the factory set condition

Min. supply temperature heating circuit

C5:20 Electronic minimum supply temperature limit

68° F (20° C) (only in operation at standard room temperature).

Max. supply temperature heating circuit

C6:75 Electronic maximum supply temperature limit set to 167° F (75° C).

Possible change

C5:1 to

C5:127

C6:10 to

C6:127

Heating program — changeover

D5:0 With external heating program changeover

(observe setting for coding addresses “5D”,

“5E” and “5F” in the “General” group).

Heating program switches to “Constant central heating with reduced room temperature” or

“Standby mode” (subject to the settings of the set reduced room temperature).

External heating program changeover to heating circuit

D8:0 No heating program changeover via extension

EA1.

D5:1

D8:1

D8:2

D8:3

Minimum limit adjustable from 32 to 260° F

(1 to 127° C) (limited by boiler-specific parameters).

Maximum limit adjustable from 50 to 260° F

(10 to 127° C) (limited by boiler-specific parameters).

The heating program changes to “Constant operation with standard room temperature”.

Heating program changeover via input DE1 at extension EA1.

Heating program changeover via input DE2 at extension EA1.

Heating program changeover via input DE3 at extension EA1.

Vitotronic 300, GW5B & MW1B Installation and Service

Coding 1, Vitotronic 300-K

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

(continued)

Coding in the factory set condition

Slab curing function (Not used)

F1:0 Slab curing function disabled. (Not used)

Possible change

F1:1 to

F1:6

F1:15

Party mode time limit

F2:8 Time limit for party mode or external heating program changeover via pushbutton: 8 h

*1

.

Note: Observe settings of coding addresses

“5D”, “5E”, “5F” in the “General” group, as well as “D5” and “D8” in the

“Heating circuit…” group.

Start temperature raising

F8:-5 Temperature limit for raising reduced mode

23° F (-5º C); see example on page 67.

Observe the setting of coding address “A3”.

F2:0

F2:1 to

F2:12

F8:+10 to

F8:-60

F8:-61

End temperature raising

F9:-14 Temperature limit for raising the reduced set room temperature 7° F (-14º C); see example on page 67.

Set supply temperature increase

FA:20 Raising the set boiler water or supply temperature by 20% when changing from operation with reduced room temperature to operation with standard room temperature.

See example on page 67.

Duration set supply temperature increase

FB:30 Duration for raising the set boiler water or supply temperature (see coding address “FA”)

60 min.

See example on page 67.

F9:+10 to

F9:-60

FA:0 to

FA:50

FB:0 to

FB:150

Only for heating circuits with mixing valve:

Slab curing function adjustable in accordance with 6 optional temperature/time profiles.

(Not used)

Constant supply temperature 68° F (20° C).

No time limit

*1

.

Time limit adjustable from 1 to 12 h

Temperature limit adjustable from

+50 to -76° F (+10 to -60° C).

Function disabled.

*1

.

Limit for raising the set room temperature to the value selected for standard mode adjustable from +50 to -76° F (+10 to -60° C).

Temperature rise adjustable from 0 to 50%.

Duration adjustable from 0 to 300 min;

1 step 2 min.

*1

Party mode ends automatically in the “Heating and DHW” heating program when the system changes over to operation with standard room temperature.

85

86

Coding 2, Vitotronic 300-K

Calling up Coding Level 2

Vitotronic 300, GW5B & MW1B Installation and Service

Note:

H

In coding level 2, all codes are accessible, including the codes from coding level 1.

H

Codes that have no function due to the heating system equipment level or the setting of other codes are not displayed.

H

Heating systems with one system circuit and one or two heating circuits with mixing valve:

In the following, the system circuit is designated

“Heating circuit 1” and the heating circuits with mixing valve as “Heating circuit 2” or “Heating circuit 3”.

If the heating circuits were given individual designations, the selected designation and “HC1”,

“HC2” or “HC3” appear instead.

1. Press OK and simultaneously for approx. 4 sec.

2. Press OK and simultaneously for approx. 4 sec.

3. “Coding level 2”

4. Select group of required coding address:

H

“General”

H

“Boiler”

H

“DHW”

H

“Solar”

H

“Heating circuit 1/2/3”

H

“All codes std device” In this group, all coding addresses (except the coding addresses from the

“Solar” group) are displayed in ascending order.

5. Select coding address.

6. Select value according to the following tables and confirm with “OK”.

7. If you want to reset all codes to their factory set condition:

Select “Standard setting” in “Coding level 2”.

Note: This also resets codes from coding level 1.

Vitotronic 300, GW5B & MW1B Installation and Service

“General” Group

Coding 2, Vitotronic 300-K

Coding

Coding in the factory set condition

00:1 One system circuit A1 (heating circuit 1), without DHW heating.

Possible change

00:2 to

00:10

For system schemes, see the following table.

3

4

5

Coding

Value address

00: …

2

6

7

8

9

10

Description

One system circuit A1 (heating circuit 1) with DHW heating (automatic recognition)

One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating

One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating

One system circuit A1 (heating circuit 1)

One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating (automatic recognition)

One system circuit A1 (heating circuit 1)

One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating (automatic recognition).

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) without DHW heating

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) with DHW heating

One system circuit A1 (heating circuit 1)

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) without DHW heating (automatic recognition).

One system circuit A1 (heating circuit 1)

Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3) with DHW heating (automatic recognition).

Coding in the factory set condition

12:5

1E:0

With extension EA1:

DHW recirculation pump runtime for brief operation:

5 min.

With extension EA1 (analogue input 0-10 V):

Temperature demand from 32 to 212° F

(0 to 100° C):

1 V 50° F (10° C)

10 V 212° F (100° C)

2E:0

2F:0

Do not adjust.

Do not adjust.

40:125 3-way mixing valve servomotor runtime in conjunction with permanent return temperature control at plug gSA1 125 sec.

4A:0

Sensor aJA not available.

Possible change

12:1 to

12:60

Runtime adjustable from 1 to 60 min.

1E:1

—

—

40:5 to

40:199

4A:1

—

—

Temperature demand from 86 to 248° F

(30 to 120° C):

1 V 86° F (30° C)

10 V 248° F (120° C)

Runtime adjustable from 5 to 199 sec.

4B:0

4C:0

Sensor aJB not available.

Connection at plug sÖA1:

Heating circuit pump.

4B:1

4C:1

Sensor aJA available (e.g. return temperature sensor T1); automatic recognition.

Sensor aJB available (e.g. return temperature sensor T2); automatic recognition.

Primary pump, primary store system.

87

88

Coding 2, Vitotronic 300-K

“General” Group

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding in the factory set condition

4D:1

4E:1

4F:5

54:0

Connection at plug sL:

Shunt pump.

Possible change

4D:0

Connection at plug gSA1:

3-way mixing valve for return temperature control.

Without solar thermal system.

4E:2

Run-on time, shunt or distribution pump 5 min.

4F:0

4F:1 to

4F:60

54:1

54:2

54:3

Distribution pump.

Motor for 3-way mixing valve, primary store system.

No pump run-on.

Run-on time adjustable from 1 to 60 min.

5B:0

5C:0

5D:0

5E:0

Without extension EA1.

Function output aBJ at extension EA1:

Central fault message.

Function input DE1 at extension EA1:

No function.

Function input DE2 at extension EA1:

No function.

54:4

5B:1

5C:1

5C:2

5C:3

5C:4

5C:5

5D:1

5D:2

5D:3

5D:4

5D:5

5D:6

5E:1

5E:2

5E:3

5E:4

5E:5

5E:6

With Vitosolic 100; automatic recognition.

With Vitosolic 200; automatic recognition.

With solar control module, type SM1, without auxiliary function; automatic recognition.

With solar control module, type SM1, with auxiliary function, e.g. central heating backup; automatic recognition.

With extension EA1; automatic recognition.

Accessories pump.

No function.

Heating circuit pump A1 is switched to low speed (reduced mode).

Heating circuit pump M2 is switched to low speed (reduced mode).

Heating circuit pump M3 is switched to low speed (reduced mode).

Heating program changeover.

External demand with minimum set supply temperature.

Selection of set value in coding address “9B” in the “General” group.

External blocking.

External blocking with fault message.

Fault message input.

Brief operation, DHW recirculation pump

(pushbutton function).

Setting of runtime for DHW recirculation pump in coding address “12” in the “General” group.

Heating program changeover.

External demand with minimum set supply temperature.

Selection of set value in coding address “9B” in the “General” group.

External blocking.

External blocking with fault message.

Fault message input.

Brief operation, DHW recirculation pump

(pushbutton function).

Setting of runtime for DHW recirculation pump in coding address “12” in the “General” group.

Vitotronic 300, GW5B & MW1B Installation and Service

“General” Group

(continued)

Coding in the factory set condition

5F:0 Function input DE3 at extension EA1:

No function.

6E:50

76:0

77:5

78:1

79:1

7A:0

7B:1

7F:1

80:6

81:1

82:3

83:5

No display correction of the outside temperature.

Without LON communication module.

LON participant number.

LON communication enabled.

With LON communication module:

Control unit is fault manager.

Without central control of heating circuits.

With LON communication module:

Control unit transmits the time.

Detached house.

If a fault occurs for at least

30 s, a fault message is displayed.

Automatic summer/wintertime changeover.

Summer time starts:

March

Summer time starts:

Week 5 of the selected month.

Coding 2, Vitotronic 300-K

7A:1

7A:2

7A:3

7B:0

7F:0

80:0

80:2 to

80:199

81:0

81:2

81:3

82:1 to

82:12

83:1 to

83:5

Possible change

5F:1 Heating program changeover.

5F:2 External demand with minimum set supply temperature.

Selection of set value in coding address “9B” in the “General” group.

5F:3

5F:4

5F:5

5F:6

6E:0 to

6E:49

6E:51 to

6E:99

76:1

External blocking.

External blocking with fault message.

Fault message input.

Brief operation, DHW recirculation pump

(pushbutton function).

Setting of runtime for DHW recirculation pump in coding address “12” in the “General” group.

Display correction –5 K to

Display correction –0.1 K

Display correction +0.1 K to

Display correction +4.9 K

With LON communication module (automatic recognition).

77:1 to

77:99

78:0

79:0

LON participant number, adjustable from 1 to

99:

1 – 4 = Boiler control unit

5 = Cascade control unit

10 – 97 = Vitotronic 200-H

98 = Vitogate

99 = Vitocom

LON communication disabled.

Control unit is not fault manager.

With central control (see page 66):

System circuit A1 (heating circuit 1).

Heating circuit with mixing valve M2

(heating circuit 2).

Heating circuit with mixing valve M3

(heating circuit 3).

Time not transmitted.

Apartment building.

Separate adjustment of holiday program and time program for DHW heating possible.

Immediate fault message.

The minimum fault duration until a fault message is issued is adjustable from 10 to

995 sec; 1 step 5 sec.

Manual summer/wintertime changeover.

Use of the radio clock receiver (automatic recognition).

With LON communication module:

The control unit receives the time.

January to December

Week 1 to week 5 of the selected month

89

90

Coding 2, Vitotronic 300-K

“General” Group

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding in the factory set condition

84:7

85:10

86:5

87:7

88:0

8A:175

8F:0

91:0

96:1

97:2

98:1

Summer time starts:

Last Sunday of the selected month.

Wintertime starts:

October.

Wintertime starts:

Week 5 of the selected month.

Summer time starts:

Last Sunday of the selected month.

Temperature displayed in °C (Celsius).

Do not adjust.

Operation in the standard menu and extended menu enabled.

Note: The relevant code is only enabled when you exit the service level (see page 51).

90:128 Time constant for calculating adjusted outside temperature 21.3 h.

Connection at terminals 1 and 2 in plug aVD disabled (external heating program changeover)

(see page 36).

With extension for heating circuits 2 and 3 with mixing valve.

With LON communication module:

The control unit sends the outside temperature to the Vitotronic 200-H.

With LON communication module:

Viessmann system number (in conjunction with monitoring several systems via Vitocom LAN1).

86:1 to

86:5

87:1 to

87:7

88:1

Possible change

84:1 Monday to Sunday to

84:7

85:1 to

85:12

January to December

Week 1 to week 5 of the selected month

Monday to Sunday

Temperature displayed in °F (Fahrenheit).

—

8F:1

8F:2

Operation in the standard menu and extended menu blocked.

Operation enabled in the standard menu; blocked in the extended menu.

90:1 to

90:199

91:1

91:2

91:3

91:4

91:5

91:6

91:7

96:0

97:0

97:1

98:1 to

98:5

Fast (low values) or slow (high values) matching of the supply temperature, subject to the set value when the outside temperature changes. 1 step 10 min.

Contact affects the following heating circuits:

System circuit A1 (heating circuit 1).

Heating circuit with mixing valve M2 (heating circuit 2).

Heating circuits without mixing valve A1

(heating circuit 1) and heating circuit with mixing valve M2 (heating circuit 2).

Heating circuit with mixing valve M3 (heating circuit 3).

Heating circuits without mixing valve A1

(heating circuit 1) and heating circuit with mixing valve M3 (heating circuit 3).

Heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3).

System circuit A1 (heating circuit 1) and heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3).

Without extension for heating circuits 2 and 3 with mixing valve.

The outside temperature of the sensor connected to the control unit is only utilized internally.

The control unit receives the outside temperature from the Vitotronic 200-H.

System number adjustable from 1 to 5.

Vitotronic 300, GW5B & MW1B Installation and Service

“General” Group

(continued)

Coding 2, Vitotronic 300-K

Coding in the factory set condition

99:0

9A:0

9B:70

9C:20

9F:8

Connection at terminals 2 and 3 in plug aVD disabled (external blocking/ external “Mixing valve closed”) (see page 36).

Connection at terminals 1 and 2 in plug aVD disabled (external “Mixing valve open”)

(see page 36).

Set supply temperature for external demand

158° F (70° C).

With LON communication module:

Monitoring LON participants.

If there is no response from a participant after

20 min., the values specified inside the control unit are used. Only then will a fault message be issued.

Differential temperature 8 K; only in conjunction with heating circuits with mixing valve M2 and M3.

9F:0 to

9F:40

Possible change

99:1 No function.

99:2 External “Mixing valve closed”

Heating circuit with mixing valve

M2 (heating circuit 2).

99:3

99:4

99:5

99:6

No function.

External “Mixing valve closed”

Heating circuit with mixing valve

M3 (heating circuit 3).

No function.

99:7

99:8

99:9

99:10

External “Mixing valve closed”

Heating circuits with mixing valve M2

(heating circuit 2) and M3 (heating circuit 3).

No function.

External blocking.

No function.

External blocking/external

“Mixing valve closed”

Heating circuits with mixing valve M2

(heating circuit 2).

99:11

99:12

99:13

99:14

99:15

9A:1

9A:2

No function.

External blocking/external

“Mixing valve closed”

Heating circuit with mixing valve

M3 (heating circuit 3).

No function.

External blocking/external

“Mixing valve closed”

Heating circuits with mixing valve M2

(heating circuit 2) and M3 (heating circuit 3).

No function.

No function.

9A:3

9A:4

9A:5

9A:6

9A:7

9B:0 to

9B:127

9C:0

9C:5 to

9C:60

External “Mixing valve open”

Heating circuit with mixing valve M2

(heating circuit 2).

No function.

External “Mixing valve open”

Heating circuit with mixing valve M3

(heating circuit 3).

No function.

External “Mixing valve open”

Heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3).

No function.

Set value adjustable from 32 to 260° F

(0 to 127° C).

No monitoring.

Time adjustable from 5 to 60 min.

Differential temperature adjustable from 0 to

40 K.

91

92

Coding 2, Vitotronic 300-K

“Cascade” Group

Vitotronic 300, GW5B & MW1B Installation and Service

Coding

Coding in the factory set condition

35:4

36:0

37:80

38:0

39:0

3A:0

3B:1

3C:2

3D:1

3E:0

3F:0

41:31

42:31

4 boilers connected to the Vitotronic 300-K.

Electronic minimum system supply temperature limit set to 32° F (0° C).

Electronic maximum system supply temperature limit set to 176° F (80° C).

No lead boiler or boiler sequence changeover; see function description in chapter “Cascade control”.

No permanent lead boiler.

No permanent last boiler.

Stand-alone parallel boiler circuit:

With supply temperature sensor (see page 62).

3C:2 Conventional strategy 2 (see page 64).

Output statement for condensing strategy and conventional strategy 1.

Distribution pump only runs when there is a heat demand.

Without DHW tank priority control for distribution pump.

No ECO threshold boiler 1.

No ECO threshold boiler 2.

38:2 to

38:200

39:1 to

39:4

3A:1 to

3A:4

3B:0

Possible change

35:1 to

35:4

1 to 4 boilers connected to the Vitotronic 300-K.

36:1 to

36:127

37:20 to

37:127

Minimum limit adjustable from 32 to 260° F

(0 to 127° C).

Maximum limit adjustable from 68 to 260° F

(20 to 127° C).

38:1

Note: Value must not be higher than the lowest value of coding address “06” in the

“Boiler” group of every Vitotronic 300,

GW5B.

Lead boiler changeover:

Every first day of the month, the boiler with the shortest number of hours run by its burner becomes the lead boiler.

Lead boiler changeover after 200 to 20,000 hours run.

1 step 100 hours run

Boiler 1, 2, 3 or 4 is the permanent lead boiler.

Boiler 1, 2, 3 or 4 is permanently the last boiler.

3B:2

3B:3

3B:4

3C:0

3C:1

3D:0

Stand-alone parallel boiler circuit:

Without supply temperature sensor

(see page 62).

Stand-alone serial boiler circuit:

Without supply temperature sensor

(see page 62).

Stand-alone serial boiler circuit:

With supply temperature sensor

(see page 62).

Sequential control with supply temperature sensor (see page 62).

Condensing strategy (see page 63).

Conventional strategy 1 (see page 64).

No output statement.

3E:1

3F:1

41:−30 to

41:+30

42:−30 to

42:+30

Note: Vitotronic 300-K regulates only according to conventional strategy 2.

Distribution pump always runs; shutdown through “External blocking” signal.

With DHW tank priority control for distribution pump.

ECO threshold boiler 1 adjustable from

-22 to +86° F (−30 to +30° C).

ECO threshold boiler 2 adjustable from

-22 to +86° F (−30 to +30° C).

Vitotronic 300, GW5B & MW1B Installation and Service

“Cascade” Group

(continued)

Coding in the factory set condition

43:31 No ECO threshold boiler 3.

44:31

45:60

46:40

47:15

48:35

49:40

No ECO threshold boiler 4.

Start integral threshold set to 60 K x min.

Stop integral threshold set to 40 K x min.

Stop differential set to 15 K.

Do not adjust.

Do not adjust.

Coding 2, Vitotronic 300-K

Possible change

43:−30 to

43:+30

ECO threshold boiler 3 adjustable from

-22 to +86° F (−30 to +30° C).

44:−30 to

44:+30

45:1 to

45:255

ECO threshold boiler 4 adjustable from

-22 to +86° F (−30 to +30° C).

Start integral threshold adjustable from 1 to

255 K x min.

46:1 to

46:255

Note: If the threshold is exceeded, one boiler or one burner stage is switched on.

Stop integral threshold adjustable from 1 to

255 K x min.

47:2 to

47:30

Note: If the threshold is exceeded, one boiler or one burner stage is switched off.

Stop differential adjustable from 2 to 30 K.

—

Note: One boiler or one burner stage will be switched off if the actual supply temperature exceeds the set supply temperature by this value.

—

—

“DHW” Group

Coding in the factory set condition

55:0 DHW tank heating, hysteresis ± 2.5 K.

56:0

58:0

59:0

5A:0

Set DHW temperature adjustable from 50 to

140° F (10 to 60° C).

Without auxiliary function for DHW heating.

DHW tank heating:

Set start point –2.5 K

Set stop point +2.5 K

For DHW heating:

The set supply temperature is determined by the highest system supply temperature demand.

Possible change

55:1 Adaptive DHW tank heating enabled.

55:2

55:3

DHW tank temperature control with 2 DHW tank temperature sensors.

DHW tank temperature control, primary store system.

56:1 Set DHW temperature adjustable from 50 to 194° F

(10 to 95° C).

58:10 to

58:60

59:1 to

59:10

Note: Observe the max. permissible DHW temperature.

Adjust the temperature controller “R”.

Input of a second set DHW temperature, adjustable from 50 to 194° F (10 to 95° C).

(observe coding addresses “56” and “63”).

Start point adjustable from 1 to 10 K below set value.

5A:1 For DHW heating:

The set supply temperature is determined by the

DHW tank supply temperature demand.

60:20 During DHW heating, the common supply temperature is max. 20 K higher than the set

DHW temperature.

61:1 The circulation pump for DHW tank heating is started immediately.

60:10 to

60:50

61:0

The differential between the common supply temperature and the set DHW temperature is adjustable from 10 to 50 K.

The circulation pump for DHW tank heating is started depending on the boiler water temperature.

93

94

Coding 2, Vitotronic 300-K

“DHW” Group

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding in the factory set condition

62:10 Circulation pump with a run-on time after DHW

73:0

75:0 tank heating of max. 10 min.

64:2 During party mode and after external changeover to constant operation with the standard room temperature:

Constant DHW heating enabled and DHW recirculation pump “ON”.

66:4 Input of the set DHW temperature:

At the control unit programming unit and all installed Vitotrol 300A remote controls.

66:0

66:1

67:40 For solar DHW heating:

Set DHW temperature 104° F (40° C).

Reheating is suppressed above the selected set temperature (DHW heating by the boiler only if solar energy is not sufficient).

68:8 With 2 DHW tank temperature sensors

(code “55:2”):

DHW tank heating stop point at set value x 0.8.

69:7 With 2 DHW tank temperature sensors

(code “55:2”):

DHW tank heating start point at set value x 0.7.

6A:75 Runtime, servomotor, mixing valve, heat exchanger set, Vitotrans 222, (80 and 120 kW):

75 sec.

70:0 DHW recirculation pump “ON” according to time program when DHW heating is enabled.

71:0 DHW recirculation pump:

“ON” according to time program.

72:0 DHW recirculation pump:

“ON” according to time program.

DHW recirculation pump:

“ON” according to time program.

DHW recirculation pump “ON” during economy mode according to time program.

Possible change

62:0

62:1 to

62:15

64:0

Circulation pump without run-on.

Run-on time adjustable from 1 to 15 min.

64:1

No DHW heating, DHW recirculation pump

“OFF”.

DHW heating and DHW recirculation pump according to time program.

66:2

66:3

66:5

66:6

66:7

67:0

67:10 to

67:95

68:2 to

68:10

69:1 to

69:9

6A:10 to

6A:255

70:1

71:1

71:2

72:1

72:2

73:1 to

73:6

73:7

75:1

At the control unit programming unit.

At the control unit programming unit and remote control system circuit A1 (heating circuit ).

At the control unit programming unit and remote control heating circuit with mixing valve

M2 (heating circuit 2).

At the control unit programming unit and remote control heating circuit with mixing valve

M3 (heating circuit 3).

At the remote control system circuit A1

(heating circuit 1).

At the remote control heating circuit with mixing valve M2 (heating circuit 2).

At the remote control heating circuit with mixing valve M3 (heating circuit 3).

No third set value.

Set DHW temperature adjustable from 50 to

194° F (10 to 95° C). (limited by boiler specific parameters).

Observe the setting of coding address “56”.

Factor adjustable from 0.2 to 1;

1 step 0.1

Factor adjustable from 0.1 to 0.9;

1 step 0.1

For heat exchanger set Vitotrans 222 (240 kW): set 113 sec.

Runtime adjustable from 10 to 255 sec.

DHW recirculation pump “ON” according to time program.

“OFF” during DHW heating to the first set value.

“ON” during DHW heating to the first set value.

“OFF” during DHW heating to the second set value.

“ON” during DHW heating to the second set value.

“ON” from once per hour for 5 min. up to

6 times per hour for 5 min. during the time program.

Constantly “ON”.

DHW recirculation pump “OFF” during economy mode.

Vitotronic 300, GW5B & MW1B Installation and Service

“Solar” Group

Coding 2, Vitotronic 300-K

Only in conjunction with solar control module, type SM1.

Coding

Coding in the factory set condition

00:8

01:4

02:0

The solar circuit pump starts when the collector temperature exceeds the actual DHW temperature by 8 K.

The solar circuit pump stops when the differential between the collector temperature and the actual DHW temperature is less than

4 K.

Solar circuit pump (multi stage) without speed control by solar control module SM1.

02:1

Possible change

00:2 to

00:30

01:1 to

01:29

The differential between the actual DHW temperature and the start point for the solar circuit pump is adjustable from 2 to 30 K.

The differential between the actual DHW temperature and the stop point for the solar circuit pump is adjustable from 1 to 29 K.

03:10

04:4

05:10

06:75

07:0

The temperature differential between the collector temperature and actual DHW temperature is regulated to 10 K.

Controller amplification of the speed control

4%/K.

Minimum speed of the solar circuit pump

10% of the maximum speed.

Maximum speed of the solar circuit pump

75% of the maximum possible speed.

Interval function of the solar circuit pump switched off.

02:2

03:5 to

03:20

04:1 to

04:10

05:2 to

05:100

06:1 to

06:100

07:1

Solar circuit pump (multi stage) is speedcontrolled with wave pack control.

Solar circuit pump is speed-controlled with

PWM control.

The differential temperature control between the collector temperature and actual DHW temperature is adjustable from 5 to 20 K.

Controller amplification adjustable from 1 to

10%/K.

Minimum speed of the solar circuit pump is adjustable from 2 to 100%.

Maximum speed of the solar circuit pump is adjustable from 1 to 100%.

08:60

09:130

0A:5

0B:0

0C:1

The solar circuit pump stops when the actual

DHW temperature reaches the maximum DHW tank temperature 140° F (60° C).

The solar circuit pump stops if the collector temperature reaches 266° F (130° C)

(maximum collector temperature to protect the system components).

To protect system components and heat transfer medium:

The speed of the solar circuit pump is reduced if the actual DHW tank temperature is 5 K below the maximum DHW tank temperature.

Frost protection function for solar circuit switched off.

Delta T monitoring switched on.

No flow rate captured in the solar circuit, or flow rate too low.

08:10 to

08:90

09:20 to

09:200

0A:0

0A:1 to

0A:40

0B:1

0C:0

Interval function of the solar circuit pump switched on.

To capture the collector temperature more accurately, the solar circuit pump starts for short cycles.

The maximum DHW tank temperature is adjustable from 50 to 194° F (10 to 90° C).

The temperature is adjustable from 68 to

392° F (20 to 200° C).

Stagnation time reduction is disabled.

Value for stagnation time reduction is adjustable from 1 to 40 K.

Frost protection function for solar circuit switched on (not required with Viessmann heat transfer medium).

Delta T monitoring switched off.

95

96

Coding 2, Vitotronic 300-K

“Solar” Group

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Coding in the factory set condition

0D:1

0E:1

Night circulation monitoring switched on.

Unintentional flow rate is captured in the solar circuit (e.g. at night).

Calculation of solar yield with Viessmann heat transfer medium.

0F:70

10:0

The solar circuit flow rate at maximum pump speed is 7 L/min.

Possible change

0D:0

0E:2

0E:0

0F:1 to

0F:255

10:1

Night circulation monitoring switched off.

Calculation of solar yield with water as heat transfer medium (never adjust, as operation is only possible with Viessmann heat transfer medium).

Calculation of solar yield switched off.

Flow rate adjustable from 0.1 to 25.5 l/min.

1 step 0.1 l/min

Target temperature control switched on.

11:50

12:10

20:0

Target temperature control switched off (see coding address “11”).

Set solar DHW temperature 122° F (50° C).

— Target temperature control switched on

(code “10:1”): Temperature at which the solar heated water in the DHW tank is to be stratified.

— Extended control functions set to heat two

DHW tanks (code “20:8”): The second

DHW tank is heated when one DHW tank reaches its set DHW temperature.

Minimum collector temperature 50° F (10° C).

The solar circuit pump will only start when the set minimum collector temperature is exceeded.

No extended control functions enabled.

11:10 to

11:90

12:0

12:1 to

12:90

20:1

20:2

20:3

The set solar DHW temperature is adjustable from 50 to 194° F (10 to 90° C).

Minimum collector temperature function disabled.

The minimum collector temperature is adjustable from 1

22:8 Start temperature differential for central heating backup: 8 K.

Switching output sS is switched on when the temperature at sensor / exceeds the temperature at sensor aÖ by the selected value.

20:4

20:5

20:6

20:7

20:8

20:9

22:2 to

22:30

Additional function for DHW heating.

Differential temperature control 2.

Differential temperature control 2 and auxiliary function.

Differential temperature control 2 for central heating backup.

Thermostat function.

Thermostat function and auxiliary function.

Solar heating via external heat exchanger without additional temperature sensor.

Solar heating via external heat exchanger with additional temperature sensor

Solar heating of two DHW tanks.

Start temperature differential for central heating backup is adjustable from 2 to 30 K.

Vitotronic 300, GW5B & MW1B Installation and Service

“Solar” Group

(continued)

Coding 2, Vitotronic 300-K

Coding in the factory set condition

23:4

24:40

25:50

26:1

Stop temperature differential for central heating backup: 4 K.

Switching output sS is switched off when the temperature at sensor / falls below the stop point. The stop point is the sum of the temperature at sensor aÖ and the value selected for the stop temperature differential.

Start temperature for thermostat function 104° F

(40° C).

Start temperature for thermostat function ≤ stop temperature for thermostat function:

Thermostat function, e.g. for reheating.

Switching output sS is switched on when the temperature at sensor / falls below the start temperature for the thermostat function.

Start temperature for thermostat function > stop temperature for thermostat function:

Thermostat function, e.g. for utilizing excess heat.

Switching output sS is switched on when the temperature at sensor / exceeds the start temperature for the thermostat function.

Stop temperature for thermostat function 122° F

(50° C).

Start temperature for thermostat function ≤ stop temperature for thermostat function:

Thermostat function e.g. for reheating. Switching output sS is switched off when the temperature at sensor / exceeds the start temperature for the thermostat function.

Start temperature for thermostat function > stop temperature for thermostat function:

Thermostat function e.g. for utilizing excess heat.

Switching output sS is switched off when the temperature at sensor / falls below the start temperature for the thermostat function.

Priority for DHW tank 1 – with alternate heating.

Only when setting code “20:8”

Possible change

23:2 to

23:30

24:0 to

24:100

25:0 to

25:100

26:0

Stop temperature differential for central heating backup is adjustable from 1 to 29 K.

Start temperature for thermostat function is adjustable from 0 to 100 K.

Start temperature for thermostat function is adjustable from 0 to 100 K.

27:15

28:3

Alternate heating time 15 min.

The DHW tank without priority is heated at most for the duration of the set alternate heating time if the DHW tank with priority is heated up.

Alternate pause time 3 min.

After the selected alternate heating time for the

DHW tank without priority has expired, the rise in collector temperature is captured during the alternate pause time.

26:2

26:3

26:4

27:5 to

27:60

28:1 to

28:60

Priority for DHW tank 1

– without alternate heating

Priority for DHW tank 2

– without alternate heating.

Priority for DHW tank 2

– with alternate heating.

Alternate heating without priority for one of the DHW tanks.

The alternate heating time is adjustable from 5 to 60 min.

The alternate pause time is adjustable from 1 to 60 min.

97

Coding 2, Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

98

Parameter Address A3:…

-6

-5

-4

-3

-9

-8

-7

0

1

-2

-1

2 to

15

Coding

Coding in the factory set condition

A0:0

A1:0

A2:2

A3:2

Without remote control.

Only with Vitotrol 200A: All possible settings at the remote control can be accessed.

DHW tank priority applicable to heating circuit pump and mixing valve.

Outside temperature below 34° F (1° C):

Heating circuit pump “ON”.

Outside temperature above 37° F (3° C):

Heating circuit pump “OFF”.

Possible change

A0:1 With Vitotrol 200A; automatic recognition.

A0:2 A0:2 With Vitotrol 300A or Vitohome 300; automatic recognition.

A1:1

A2:0

A2:1

A3:-9 to

A3:15

Only party mode can be set at the remote control.

Without DHW tank priority applicable to heating circuit pump and mixing valve.

DHW tank priority applies only to the mixing valves.

Heating circuit pump “ON/ OFF” (see the following table).

Note: If a value below 34° F (1° C) is selected, there is a risk that pipes outside the thermal envelope of the building could freeze up. The standby mode in particular should be taken into consideration, e.g. during holidays.

Heating circuit pump

“ON”

14° F (-10° C)

16° F (-9° C)

18° F (-8° C)

19° F (-7° C)

21° F (-6° C)

23° F (-5° C)

25° F (-4° C)

27° F (-3° C)

28° F (-2° C)

30° F (-1° C)

32° F (0° C)

34° F (1° C) to

57° F (14° C)

“OFF”

18° F (-8° C)

19° F (-7° C)

21° F (-6° C)

23° F (-5° C)

25° F (-4° C)

27° F (-3° C)

28° F (-2° C)

30° F (-1° C)

32° F (0° C)

34° F (1° C)

36° F (2° C)

37° F (3° C) to

61° F (16° C)

Coding in the factory set condition

A4:0

A5:5

With frost protection.

With heating circuit pump logic function

(economy circuit): Heating circuit pump

“OFF” when the outside temperature (AT) is 1 K higher than the set room temperature

(RT set

) AT > RT set

+ 1 K.

Possible change

A4:1 No frost protection; this setting is only possible if code “A3:-9” has been selected.

Note: Observe information regarding coding address “A3”.

A5:0

A5:1 to

A5:15

Without heating circuit pump logic function.

With heating circuit pump logic function:

Heating circuit pump “OFF”; see the following table.

4

5

6

7 to

15

2

3

Parameter address A5:…

1

With heating circuit pump logic function: Heating circuit pump “OFF”

AT > RT set

AT > RT set

AT > RT set

AT > RT set

+ 5 K

+ 4 K

+ 3 K

+ 2 K

+ 1 K AT > RT set

AT > RT set

AT > RT set

— 1 K

AT > RT set

— 9 K

Vitotronic 300, GW5B & MW1B Installation and Service

Coding 2, Vitotronic 300-K

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

(continued)

4

5

6

7

8

1

2

3

Coding in the factory set condition

A6:36

A7:0

A9:7

AA:2

B0:0

B2:8

B5:0

Extended economy control disabled.

Only for heating circuits with mixing valve:

Without mixing valve economy function.

With pump idle time

(heating circuit pump “OFF”)

(See function description on page 51).

With output reduction by temperature sensor aJ A.

With remote control:

*2

Heating mode/reduced mode: weathercompensated.

With remote control and for the heating circuit, operation with room temperature hookup must be programmed:

*2

Room influence factor 8.

With remote control:

*2

No room temperature dependent heating circuit pump logic function.

Possible change

A6:5 to

A6:35

A7:1

Extended economy control enabled, i.e. the burner and heating circuit pump will be stopped and the mixing valve closed at a variable value, adjustable between 41 to 95° F

(5 and 35° C) plus 34° F (1° C).

The base value is the adjusted outside temperature.

This value is based on the actual outside temperature and a time constant, which takes the cooling down of an average building into consideration.

With mixing valve economy function

(extended heating circuit pump logic):

Heating circuit pump also “OFF”:

— If the mixing valve has been closed for longer than 12 min.

Heating circuit pump “ON”:

A9:0

A9:1 to

A9:15

AA:0

AA:1

B0:1

B0:2

B0:3

B2:0

B2:1 to

B2:64

B5:1 to

B5:8

— If the mixing valve changes to control function.

— If there is a risk of frost.

Without pump idle time.

With pump idle time; adjustable from 1 to 15.

1: short idle period

15: long idle period

Without output reduction.

No function.

Heating mode: weather-compensated

Reduced mode: with room temperature hook-up

Heating mode: with room temperature hook-up

Reduced mode: weather-compensated

Heating mode/reduced mode: with room temperature hook-up

Without room influence.

Room influence factor adjustable from 1 to

64.

Heating circuit pump logic function, see the following table.

*2

Only change the code for the system circuit A1 for boilers without lower temperature limit or for the heating circuits with mixing valve if a remote control is connected to them.

Parameter address B5:…

With heating circuit pump logic function:

Heating circuit pump “OFF”

1 RT actual

> RT set

+ 5 K

2 RT actual

> RT set

+ 4 K

3 RT actual

> RT set

+ 3 K

4 RT actual

> RT set

+ 2 K

5 RT actual

> RT set

+ 1 K

6 RT actual

> RT set

7 RT actual

> RT set

8 RT actual

> RT set

Heating circuit pump “ON”

RT actual

< RT set

+ 4 K

RT actual

< RT set

+ 3 K

RT actual

< RT set

+ 2 K

RT actual

< RT set

+ 1 K

RT actual

< RT set

RT actual

< RT set

— 1 K

— 1 K RT actual

< RT set

— 2 K

— 2 K RT actual

< RT set

— 3 K

99

100

Coding 2, Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

(continued)

Coding in the factory set condition

B6:0 With remote control:

*2

Without quick heat-up/ quick setback.

B7:0 With remote control and for the heating circuit, operation with room temperature hook-up must be programmed:

*2

Without start optimization.

B8:10

B9:0

C0:0

With remote control and for the heating circuit, operation with room temperature hook-up must be programmed:

*2

Heat-up gradient start optimization 10 min/K.

With remote control and for the heating circuit, operation with room temperature hook-up must be programmed:

*2

Without learning start optimization.

With remote control:

*2

Without stop optimization.

Possible change

B6:1 With quick heat-up/quick setback (see function description on page 65).

B7:1

B7:2

With start optimization, max. heat-up time delay 2 h 30 min.

With start optimization, max. heat-up time delay 15 h 50 min.

B8:11 to

B8:255

Heat-up gradient adjustable from 11 to 255 min/K.

B9:1

C0:1

With learning start optimization.

C1:0

C2:0

With remote control:

*2

Without stop optimization.

C0:2

C1:1 to

C1:12

C2:1

With stop optimization, max. setback time delay 1 h.

With stop optimization, max. setback time delay 2 h.

With stop optimization of setback time delay, adjustable from 10 to 120 min;

1 step 10 min

With learning stop optimization.

C3:125

C4:1

C5:20

With remote control:

*2

Without learning stop optimization.

Only for heating circuits with mixing valve:

Mixing valve runtime 125 sec.

System dynamics:

Mixing valve control characteristics

C3:10 to

C3:255

C4:0 to

C4:3

Runtime adjustable from 10 to 255 sec.

Controller responds too quickly (cycles between “Open” and “Closed”): select a lower value.

Controller responds too slowly (temperature is not held sufficiently): select a higher value.

Minimum limit adjustable from 34 to 260° F

(1 to 127° C).

C6:75

C8:31

D5:0

Electronic minimum supply temperature limit

68° F (20° C) (only in operation at standard room temperature).

Electronic maximum supply temperature limit set to 167° F (75° C).

With remote control and for the heating circuit, operation with room temperature hook-up must be programmed:

No room influence limit.

*2

With external heating program changeover

(observe setting of coding address “5D”,

“5E” and “5F” and “91” in the “General” group):

Heating program switches to “Constant central heating with reduced room temperature” or “Standby mode” (subject to the settings of the set reduced room temperature).

C5:1 to

C5:127

C6:10 to

C6:127

C8:1 to

C8:30

D5:1

Maximum limit adjustable from 50 to 260° F

(10 to 127° C).

Room influence limit adjustable from 1 to 30 K.

The heating program changes to “Constant operation with standard room temperature”.

*2

Only change the code for the system circuit A1 for boilers without lower temperature limit or for the heating circuits with mixing valve if a remote control is connected to them.

Vitotronic 300, GW5B & MW1B Installation and Service

Coding 2, Vitotronic 300-K

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

(continued)

Coding in the factory set condition

D8:0 No heating program changeover via extension

EA1

E1:1

E2:50

F1:0

F2:8

F8:-5

With remote control:

Set day temperature adjustable at the remote control unit from 50 to 86° F (10 to 30º C).

50 With remote control:

No display correction of the actual room temperature.

Slab curing function disabled. (Not used)

Time limit for party mode or external heating program changeover via pushbutton: 8 h

*1

.

Note: Observe settings of coding addresses

“5D”, “5E”, “5F” in the “General” group, as well as “D5” and “D8” in the

“Heating circuit…” group.

Temperature limit for raising reduced mode

23° F (-5º C); see example on page 67.

Observe the setting of coding address “A3”.

Possible change

D8:1 Heating program changeover via input DE1 at extension

EA1.

D8:2

D8:3

E1:0

Heating program changeover via input DE2 at extension

Heating program changeover via input DE3 at extension

Set day temperature adjustable from 37 to 73° F

(3 to 23º C).

E1:2

E2:0 to

E2:49

Set day temperature adjustable from 63 to 99° F

(17 to 37º C).

Display correction –5 K to

Display correction –0.1 K

E2:51 to

E2:99

F1:1 to

F1:6

F1:15

F2:0

F2:1 to

F2:12

Display correction +0.1 K to

Display correction +4.9 K

Only for heating circuits with mixing valve:

Slab curing function adjustable in accordance with 6 optional temperature/time profiles.

(Not used)

Constant supply temperature 68° F (20° C).

No time limit

*1

.

Time limit adjustable from 1 to 12 h

*1

.

F9:-14

FA:20

FB:30

Temperature limit for raising the reduced set room temperature 7° F (-14º C); see example on page 67.

Raising the set boiler water or supply temperature by 20% when changing from operation with reduced room temperature to operation with standard room temperature.

See example on page 68.

Duration for raising the set boiler water or supply temperature (see coding address

“FA”) 60 min.

See example on page 68

F8:+10 to

F8:-60

Temperature limit adjustable from

+50 to -76° F (+10 to -60° C).

F8:-61 Function disabled.

F9:+10 to

F9:-60

Limit for raising the set room temperature to the value selected for standard mode adjustable from +50 to -76° F (+10 to -60° C).

FA:0 to

FA:50

Temperature rise adjustable from 0 to 50 %.

FB:0 to

FB:150

Duration adjustable from 0 to 300 min;

1 step 2 min.

*1

Party mode ends automatically in the “Heating and DHW” heating program when the system changes over to operation with standard room temperature.

101

102

Coding 2, Vitotronic 300-K

Vitotronic 300, GW5B & MW1B Installation and Service

“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group

(continued)

Coding in the factory set condition

F2:8 Time limit for party mode or external heating program changeover via pushbutton: 8 h

*1

.

Note: Observe settings of coding addresses

“5D”, “5E”, “5F” in the “General” group, as well as “D5” and “D8” in the

“Heating circuit…” group.

Possible change

F2:0

F2:1 to

F2:12

No time limit

*1

.

Time limit adjustable from 1 to 12 h

*1

.

F8:-5 Temperature limit for raising reduced mode

23° F (-5º C); see example on page 67.

Observe the setting of coding address “A3”.

F8:+10 to

F8:-60

Temperature limit adjustable from

+50 to -76° F (+10 to -60° C).

F8:-61 Function disabled.

F9:-14 Temperature limit for raising the reduced set room temperature 7° F (-14 ºC); see example on page 67.

F9:+10 to

F9:-60

Limit for raising the set room temperature to the value selected for standard mode adjustable from +50 to -76° F (+10 to -60° C).

FA:20

FB:30

Raising the set boiler water or supply temperature by 20% when changing from operation with reduced room temperature to operation with standard room temperature.

See example on page 68.

FA:0 to

FA:50

Duration for raising the set boiler water or supply temperature (see coding address “FA”)

60 min.

See example on page 68

FB:0 to

FB:150

Temperature rise adjustable from 0 to 50 %.

Duration adjustable from 0 to 300 min;

1 step 2 min.

*1

Party mode ends automatically in the “Heating and DHW” heating program when the system changes over to operation with standard room temperature.

Vitotronic 300, GW5B & MW1B Installation and Service

Connection and Wiring Diagram

Wiring, Vitotronic 300, GW5B

A1 PCB, extension for heating circuit 2 and 3 with

mixing valve (optional accessory)

A2 PCB, low voltage

A3 PCB 120V~

A6 Programming unit

A7 Optolink PCB/emissions test switch

A8 PCB

A9 Boiler coding card

A10 LON communication module (accessories)

A11 Power supply unit PCB

A12 Programming unit ON/OFF switch

X Electrical interfaces

103

Wiring, Vitotronic 300, GW5B

Connection and Wiring Diagram

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

Main PCB low voltage

104

Legend

!

Outdoor air temperature sensor (No function)

§

Boiler water temperature sensor

%

A No function

% B No function

) No function aG

Flue gas temperature sensor aJ

A Therm-Control temperature sensor

or

Return temperature sensor T1 aJ B Return temperature sensor T2 aVD External hook-up aVG KM BUS participant aVH

External hook-up

LON Connecting cable for data exchange (accessory)

S3 Emissions test switch “

V1 Fault indicator (red)

V2 ON indicator (green)

X Electrical interfaces

S ”

Vitotronic 300, GW5B & MW1B Installation and Service

Connection and Wiring Diagram

(continued)

PCB 120V~

Wiring, Vitotronic 300, GW5B sÖ A1 High temperature circuit pump sA DHW circulation pump sK

DHW recirculation pump sL

Accessories pump fÖ

Power supply, 120V/60 Hz fA

Burner (call for heat) gÖ

Central fault message gS A1 Isolation valve

or

3-way mixing valve, primary store system (optional

accessory) aBÖ

External connections, e.g. supplementary safety equipment aBA

Safety chain, potential free aBH

Power supply for accessories

F1, F2 Fuse/MCB

K1-K10 Relay

S1 ON/OFF switch

X Electrical interfaces

105

Wiring, Vitotronic 300-K

Connection and Wiring Diagram

Overview

Vitotronic 300, GW5B & MW1B Installation and Service

106

Legend

A1 PCB, extension for heating circuits 2 and 3 with

mixing

A2 PCB low voltage

A3 PCB 120V~

A6 Programming unit

A7 Optolink PCB/emissions test switch

A8 PCB

A10 LON communication module (accessory)

A11 Power supply unit PCB

A12 ON/OFF switch

X Electrical interfaces

Vitotronic 300, GW5B & MW1B Installation and Service

Connection and Wiring Diagram

(continued)

PCB 120V~

Wiring, Vitotronic 300-K

Legend

sÖ

Heating circuit pump sA Circulation pump for DHW tank heating

(accessory) sK sL

DHW recirculation pump (on site)

Shunt pump or distribution pump (on site) fÖ gÖ

Power supply, 120V/60 Hz

Central fault message gS

Motor for 3-way mixing valve, primary store

system abH Power supply connection for accessories

F Fuse

K1-K10 Relay

S1

X

ON/OFF switch

Electrical interfaces

107

Wiring, Vitotronic 300-K

Connection and Wiring Diagram

(continued)

Vitotronic 300, GW5B & MW1B Installation and Service

PCB low voltage

108

Legend

!

Outside temperature sensor

?

Supply temperature sensor

% A DHW tank temperature sensor

% B DHW tank temperature sensor 2 for primary store

system)

)

No aG No function aJ A No function aJ B Return temperature sensor T2

or

Temperature sensor primary store system aVD External hook-up aVG KM BUS participant aVH

External hook-up

LON Connecting cable for data exchange (accessory)

S3 Emissions test switch “

V1 Fault indicator (red)

V2 ON indicator (green)

X Electrical interfaces

S ”

Vitotronic 300, GW5B & MW1B Installation and Service

Connection and Wiring Diagram

(continued)

PCB, extension for heating circuits 2 and 3 with mixing valve

Wiring, Vitotronic 300-K

Legend

?

Supply temperature sensors sÖ Heating circuit pumps fÖ Power supply gS

Mixing valve motors

K1-K6 Relay

X Electrical interfaces

109

110

Components

Sensors

Temperature

Vitotronic 300, GW5B & MW1B Installation and Service

Boiler water, DHW tank, supply, return and room temperature sensors

Note:

H

The supply temperature sensor can be used as a contact or immersion temperature sensor.

Note: The supply temperature sensor in the mixing valve extension kit is a contact temperature sensor.

H

The room temperature sensor is connected at terminals

3 and 4 in the Vitotrol 300A.

Installation and service instructions,

Vitotronic 200-H

Viessmann NTC 10 kΩ (blue identification)

1. Pull corresponding plug.

2. Check the sensor resistance and compare it with the curve.

3. In the case of severe deviation, check the installation and replace the sensor if required.

Outside temperature sensor

Viessmann NTC 10 kΩ (blue identification)

plug .

2. Check the sensor resistance across plug terminals

“1” and “2” and compare with the curve.

3. If the results are very different from the curve, disconnect the wires from the sensor and repeat the test on the sensor.

4. Depending on the result, replace the lead or the outside temperature sensor.

Temperature

Vitotronic 300, GW5B & MW1B Installation and Service

Boiler Coding Card

Boiler

Vitocrossal 200, type CM2

Boiler coding card

Display in brief scan

1042

Mixing Valve Motor Kit



Mixing valve “Open”



Mixing valve “Closed”

Legend

A Mixing valve plug

B Field wiring

C Connection to mixing valve adaptor

Part no.

7841113

Components

Components:

H

Mixing valve motor (not for flanged mixing valve)

H

Connecting plug for the heating circuit pump

H

Supply temperature sensor as contact temperature sensor for measuring the supply temperature, with connecting cable 19 ft. (5.8 m) long.

Changing the rotational direction (if required)

1. Insert 3-pin plug A in the mixing valve motor rotated through 180°.

2. Check the rotational direction.

Manual mixing valve adjustment

Lift the motor lever, unhook the mixing valve handle and pull plug A.

Specification mixing valve motor

Rated voltage

Rated frequency 60

Power consumption

120V~

Hz

4 W

Permissible ambient temperature

H during operation 32 to 104° F (0 to +40° C)

H during storage and transport -4 to +149° F (–20 to +65° C)

111

112

Components

Extension EA1 Accessory (optional)

Vitotronic 300, GW5B & MW1B Installation and Service

Digital data inputs DE1 to DE3

Functions:

External heating program changeover, separate for heating circuits 1 to 3

External blocking

External blocking with fault message input

External demand with minimum boiler water

temperature

Fault message input

Brief operation of the DHW recirculation pump

When connecting external contacts, observe the requirements of safety category II, i.e. 8.0 mm air-gap and creep path or maintain a 2.0 mm insulation thickness against ‘live’ parts.

Input function assignment

Select the input functions by means of the following codes in the “General” group at the boiler control unit:

DE1: Coding address “5D”

DE2: Coding address “5E”

DE3: Coding address “5F”

Assigning the heating program changeover function to the heating circuits

The allocation of the heating program changeover to the relevant heating circuit is selected via coding address

“D8” in the “Heating circuit…” group:

Code “D8:1”: Changeover via input DE1

Code “D8:2”: Changeover via input DE2

Code “D8:3”: Changeover via input DE3

The effect of the heating program changeover is selected via coding address “D5” in the “Heating circuit…” group.

Duration of the heating program changeover

Contact constantly closed:

The changeover is active as long as the contact closed.

Contact only closed briefly via pushbutton:

The changeover is enabled for the time selected in coding address “F2” in the “Heating circuit…” group.

DHW recirculation pump runtime for brief operation

The DHW recirculation pump can be started outside the times when it is enabled according to the time program.

The DHW recirculation pump is started by closing the contact at DE1, DE2 or DE3 by means of a pushbutton.

The runtime is adjusted via coding address “3D” in the

“General” group.

Analogue input 0–10V

The 0–10V hook-up provides an additional set boiler water temperature:

0–1V Is taken as “no default for set boiler water

temperature”.

Note: Ensure DC separation between the LV output and the earth conductor of the onsite voltage

source.

Coding address “1E” in the “General” group:

“1E:0” ≙ temperature demand adjustable in the range from 32 to 212° F (0 to 100° C) 1V ≙ 50° F

(10° C) set value change 10V ≙ 212° F (100° C) set value change

“1E:1” ≙ temperature demand adjustable in the range from 86 to 248° F (30 to 120° C) 1V ≙ 86° F

(30° C) set value change 10V ≙ 248° F (120° C) set value change

Output aBJ

Connection of a central fault messaging facility or signalling reduced mode (reduction of the heating circuit pump speed).

Select the function of output aBJ via coding address

“5C” in the “General” group.

Refer to the EA1 module Installation Instructions

Vitotronic 300, GW5B & MW1B Installation and Service

Parts List Vitotronic 300, GW5B

Ordering Replacement Parts:

Please provide model no. from rating plate and serial no. when ordering replacement parts. Order replacement components from your Viessmann distributor.

Parts

0001 Hinge

0008 Supporting stay

0011 Safety valve with wiring

0013 Casing front with frame

0014 PCB cover

0015 Front flap

0016 Casing, rear section

0018 Programming unit

0019 Fascia, left

0020 Fascia, right

0021 Ribbon cable, 14-pole

0022 Connecting cable for extension for heating circuit 2 and 3 with mixing valve

0023 Connecting cable, emissions test switch

0024 Fuse holder cap for control fuse

0025 Fuse holder for control fuse

0037 Emissions test switch, single-pole

0038 ON/OFF switch, 2-pole

0040 Outside temperature sensor !

0042 Temperature sensor with plug

0045 Contact temperature sensor with plug

(supply temperature sensor)

0048 PCB, extension heating circuits 2 and 3 cover

0049 PCB, low voltage

0050 PCB

0051 PCBs, Optolink and emissions test switch

0052 PCB 120V~

0054 Power supply unit PCB

0056 LON communication module

0057 LON cable

0058 Terminator (2 pieces)

0074 Connecting cable

0080 Installation and service instructions

0081 Operating instructions

0092 Fuse 6.3 A/250V~, slow

0100 Plug for LV (7 pieces)

0101 Plug for pumps (3 pieces)

0102 Plug gS (3 pieces)

0103 Plug aBH (3 pieces)

0104 Power plug fÖ (3 pieces)

0105 Plug aBÖ

0106 Plug gÖ (3 pieces)

0108 Plug aVD, aVG, aVH (3-pole)

0109 Burner plug (3-pole)

Parts Lists

113

114

Parts Lists

Parts List Vitotronic 300-K

Ordering parts

The following information is required:

H

Serial no. (see type plate A)

H

Position number of the part (from this parts list)

Obtain standard parts from your local supplier.

Parts

0001 Hinge

0008 Supporting stay

0011 Safety valve with wiring

0012 circuits 2 and 3 with mixing valve

0013 Casing front with frame

0014 PCB cover flap

0016 Rear section of enclosure

0018 Programming unit

0019 Fascia left

0020 Fascia right

0021 Ribbon cable, 10-pole

0022 circuits 2 and 3 with mixing valve

0023 Connecting cable, emissions test switch

0024 Fuse holder cap for control fuse

0025 Fuse holder for control fuse

0037 Emissions test switch, single-pole

0038 ON/OFF switch, 2-pole

0040 Outside temperature sensor !

0042 Temperature sensor with plug

0045

(supply temperature sensor)

0049 PCB low voltage

0048 Extension for heating circuits 2 and 3 with mixing valve

0050 PCB

0051 PCBs, Optolink and emissions test switch

0052 PCB 120V~

0054 Power supply unit PCB

0056 LON communication module

0057 LON connecting cable

0058 Terminator (2 pce)

0074 Connecting cable, 16-pole

0080 Installation and service instructions

0081 Operating instructions

0092 Fuse 6.3 A (slow)/250V~

0100 Plug for LV (7 pce)

0101 Plug for pumps (3 pce)

0102 Plug gS (3 pce)

0103 Plug aBH (3 pce)

0104 Power supply plug fÖ (3 pce)

0106 Plug gÖ (3 pce)

0108 Plug aVD, aVG, aVH (3-pole)

Vitotronic 300, GW5B & MW1B Installation and Service

Vitotronic 300, GW5B & MW1B Installation and Service

Specification Vitotronic 300, GW5B

Rated voltage 120V~

Rated frequency 60

Rated current

Power consumption

Permissible ambient temperature:

2 x 6A~

10 W

During operation 32 to 104° F (0 to +40° C)

Installation in living spaces or boiler rooms (standard conditions)

During storage and transport -4 to 149° F (−20 to +65° C)

Specification

Rated relay output breaking capacity at 120V~ sÖ Primary pump, primary store system

or

Circulation pump – flue gas/water heat exchanger 2A~

*1

sA sL

Circulation pump for DHW tank heating

Shunt pump or boiler circuit pump

2A~

2A~

*1

*1

gÖ

Central fault message 2A~

*1

gS

Isolation

Mixing valve motor, return temperature raising facility

or

Motor, 3-way mixing valve, primary store system 0.1A~

*1

fA

*1

Total max. 6A~ (shared between all 120V outputs)

Specification Vitotronic 300-K

Rated voltage 120V~

Hz

Rated current

Power consumption

6A

10 W

Permiss. ambient temperature

H

During operation 32 to 104° F (0 to +40° C)

Installation in living spaces or boiler rooms (standard ambient conditions)

H

During storage and transport -4 to 149° F (−20 to +65° C)

Rated relay output breaking capacity at 120V~ sÖ

Heating circuit pump or

Primary pump, primary store system sA sK sL gÖ

Circulation pump for DHW tank heating

DHW recirculation pump

Shunt pump/distribution pump

Central fault message

Motor, 3-way mixing valve,

primary store system gS Mixing valve motor, extension kit, mixing valve or

Motor, 3-way mixing valve,

return temperature control or

*2

Total max. 6A~ (shared between all 120V outputs)

2A~

*2

2A~

*2

2A~

*2

2A~

*2

2A~

*2

0.1A~

*2

115

Vitotronic 300, GW5B and MW1B Installation and Service

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