5303 271 v1 - viessmann-us.com · generalinformation 7 application example 1 (continued) system...

Service Instructionsfor use by heating contractor

Vitotronic 300

Model KW3

Weather-responsive indoor/outdoor, digital boiler controlfor heating systems with one or more heating circuits

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Read and save these instructions

for future reference.

IMPORTANT

5303 271 v1.5 09/2011

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Safety instructions

2

Safety Instructions

Safety, Installation and Warranty Requirements

Please ensure that these instructions are read and understood before commencing installation and operation. Failure to comply with

the instructions listed below and details printed in these instructions 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).

Licensed professional heating

contractor

The installation, adjustment, service,and maintenance of this equipmentmust be performed by a licensedprofessional heating contractor.Please see sections

entitled “Safety” and

“Important Regulatory and

Installation Requirements”.

Product documentation

Read all applicable documentation

before commencing installation. Storedocumentation near boiler in a readilyaccessible location for reference inthe future by service personnel.For a listing of applicable

literature, please see

section entitled “Important

Regulatory and Installation

Requirements”.

Advice to owner

Once the installation work iscomplete, the heating contractor mustfamiliarize the systemoperator/ultimate owner with allequipment, as well as safetyprecautions/requirements, shut-downprocedure, and the need forprofessional service annually beforethe heating season begins.

Warranty

Information contained in this andrelated product documentation mustbe read and followed. Failure to do so

renders warranty null and void.

Safety Terminology

One or more of the following terms are used throughout this manual to bring attention to the presence of potential hazards or

important product information. Please heed the advice given!

Helpful hints for installation, operation or

maintenance which pertain to the product.

5303271v1.5

Indicates an imminently hazardous

situation which, if not avoided, will

result in death, serious injury or

substantial product/property damage.

DANGER


situation which, if not avoided, could

result in death, serious injury or

substantial product/property damage.

WARNING


situation which, if not avoided, may

result in minor injury or product/property

damage.

CAUTION

IMPORTANT

Index

3

Page

Safety Instructions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Information Overview of Boiler Coding Cards 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Application Example 1

System with one direct-connected heating circuitwithout mixing valve 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


System with one heating circuit with mixing valve 9. . . . . .


System with one direct-connected heating circuitwithout mixing valve and one with mixing valve 13. . . . . . . . . . . .


System with two heating circuits with mixing valves 17.


System with one direct-connected heating circuitwithout mixing valve and two heating circuitswith mixing valves 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Information Controls and display elements 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview of Service Levels 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjusting heating curves 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heating circuit control 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tank temperature control 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Temperatures, Boiler Coding Cards and Scans 34. . . . . . . . . . . . . . .

Scan 1 to 5 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Relay Test 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scanning Operating Status Information 37. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scanning and Resetting Service Information 39. . . . . . . . . . . . . . . . . . .

Components Components from the parts list 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flue gas temperature sensor 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Extension kit for mixing valve circuit 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote control 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Room temperature sensor 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switching module V 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

KM BUS expansion module 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input module extension 0-10V 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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4

Troubleshooting Diagnosis

Fault with fault message on control unit 57. . . . . . . . . . . . . . . . . . . . . .

Retrieving fault codes from error log(fault history) 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Additional Information Codings

Accessing coding level 1 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Coding 1 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Coding 2 information 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessing coding level 2 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resetting codings to factory default settings 67. . . . . . . . . . . . . .

Coding 2 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring Diagram 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 86. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5303271v1.5

General Information

5

Overview of Boiler Coding Cards

Vitotronic 300, Part No. Z001 231,

in conjunction with

Required boiler coding

card

Vitola 200, VB2 Series E1

Vitogas 100, GS1 Series85 to 184 MBH /22 to 154 kW

255 to 515 MBH /72 to 144 kW

Vitogas 50, RS Series

F0

C6

C6

Vitorond 100, VR1 Series F1

5303271v1.5

General Information

6


System with one direct-connected heating circuit without mixing valve

Boiler with Vitotronic 300Domestic hot water tankVitotrol, Switching Module-V,KM-BUS Expansion Module for theconnection of several KM-BUSparticipantsHeating circuit without mixing valvePower Pump ModuleLow water cut-off device

Connectors

Outdoor temperature sensorBoiler temperature sensorDHW tank temperature sensorKM-BUS participantsExtension fortwo-stage/modulating burner*1

Heating circuit pumpBoiler circuitDHW production pump(accessory)DHW recirculation pump(field supplied where required)Power supply(120 VAC, 60 Hz)Burner, single-stage*1

Burner, two-stage/modulating*1

Available System Accessories

Vitotrol remote controlRoom temperature sensorSwitching Module-V for expandingthe range of control functions

KM-BUS Expansion ModuleFlue gas temperature sensor

*1Included in standard boiler equipment.

5303271v1.5

General Information

7

Application Example 1 (continued)

System with one direct-connected heating circuit without mixing valve (continued)

Function/Component Coding Remarks

Factory default setting Setting changes

Remarks

System type 00: 1 ----- System without DHWtank 00: 1(factory default setting)

System with DHW tank00: 2 (setting changedautomatically)

Burner type 02: 0(single-stage)

02: 1 (two-stage)02: 2 (modulating)

The two-stage/modulatingextension is required fortwo-stage and modulatingburners (included in standardboiler equipment)

Vitotrol 200(accessory)

orVitotrol 300(accessory)

A0: 0

A0: 0

----------

----------

Coding ”A0: 0” is changedautomatically to ”A0: 1”.


Room temperature sensor(accessory), only in conjunctionwith remote control

---------- ---------- For measuring roomtemperature when remotecontrol cannot be placed in asuitable location. The roomtemperature sensor isactivated via a coding switchon the remote control.

Sensor/Burner fault indicationmodule(included in standard equipment)

92: 1 ---------- For displaying and transmit-ting fault messageswhen fixed high limit isactivated

when additional safetyequipment operates

KM-BUS Expansion Module(accessory)

---------- ---------- Required when more thanone KM-BUS participant isconnected

Switching Module-V(accessory)

94: 0 ---------- Required for external burneractivation and disable. TheSwitching Module-V is auto-matically recognized.Coding ”94: 0” is changedautomatically to ”94: 2”.

5303271v1.5

General Information

8


System with one direct-connected heating circuit without mixing valve (continued)



Remarks

Flue gas temperature sensor(accessory)

---------- ---------- For displaying the flue gastemperature and for monitoringhigh limit values. The flue gastemperature sensor isautomatically recognized.

Coding switch settings on Vitotrol 200 and Vitotrol 300

(Coding switch on rear of remote control)

The respective remote control must be assigned to a heating circuit via the coding switches.

Remote control effective for Vitotrol 200Coding switch S6

Vitotrol 300Coding switch S30

Heating circuit without mixing valve(factory default setting)

If separate room temperature sensor isconnected

Coding switch 3 to ”ON” Coding switch 3 to ”ON”

5303271v1.5

General Information

9


System with one heating circuit with mixing valve

Boiler with Vitotronic 300Domestic hot water tankKM-BUS Expansion Module(accessory) for the connection ofseveral KM-BUS participantsHeating circuit with mixing valveMixing valve actuator accessory kitPower Pump ModuleLow water cut-off device

Connectors

Outdoor temperature sensorSupply temperature sensor(accessory)*2

Boiler temperature sensorDHW tank temperature sensorReturn water temperature sensor(accessory)*2,3

KM-BUS participantExtension fortwo-stage/modulating burner*4

M1 Heating circuit pump*2

Mixing valve circuitDHW production pump(accessory)DHW recirculation pump(installed on site)Power supply(120 VAC, 60 Hz)Burner, single-stage*4



Vitotrol remote controlRoom temperature sensorReturn water temperature sensorSwitching Module-V for expandingthe range of control functions


*1 Supply check valve, only required if piping connection is made on one common boiler return.*2 To be connected in actuator accessory kit.*3 In connection with underfloor heating when control measures supply and return water temperature.*4 Included in standard boiler equipment.

5303271v1.5

General Information

10


System with one heating circuit with mixing valve (continued)



Remarks

System type 00: 1 System without DHWtank 00: 3

System with DHWtank 00: 4

Coding is automaticallychanged to ”00: 5” or”00: 6”, must be resetmanually



The two-stage/modulatingburner extension is requiredfor two-stage andmodulating burners (includedin standard equipment)

Mixing valve actuator accessorykit (accessory)

---------- ---------- For assignment to heatingcircuit refer to page 12.



A0: 0

A0: 0

----------

----------



Room temperature sensor(accessory), only in conjunctionwith remote control

---------- ---------- For measuring the roomtemperature when theremote control cannot beplaced in a suitable location.The room temperaturesensor is activated via acoding switch on the remotecontrol.

Sensor/burner fault indicationmodule

92: 1 ---------- For displaying andtransmitting fault messageswhen fixed high limit hasopened





94: 0 ---------- Required for external burneractivation and disable. TheSwitching Module-V isautomatically recognized.Coding ”94: 0” is changedautomatically to ”94: 2”.

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General Information

11





Remarks

Return water temperature sensor(accessory)

---------- ---------- For measuring the returnwater temperature. Thereturn water temperaturesensor is activated via acoding switch in actuatoraccessory kit (see followingpage).

Flue gas temperature sensor(accessory)

---------- ---------- For displaying the flue gastemperature and monitoringhigh limit values. The fluegas temperature sensor isautomatically recognized.

5303271v1.5

General Information

12



Coding switch settings for mixing valve motor, part no. 7133 392 (old version)

(Coding switches on mother board of mixing valve motor)

Effective for heating circuit with mixingvalve

When connecting a return watertemperature sensor (accessory), thecoding switch must be reset.(Set coding switch 3 to ”ON”).

Coding switch settings on Vitotrol 200 or Vitotrol 300

(Coding switch on rear of remote control)The respective remote control must be assigned to the heating circuit via the coding switches.



Heating circuit M1(mixing valve circuit)Heating circuit is assigned to heatingcircuit selector button

Coding switch 1 to ”OFF”Coding switch 2 to ”ON”

Coding switch 1 to ”OFF”

Coding switch 2 to ”ON”



Coding switch settings for mixing valve motor, part no. 7837 524 (new version)

(the rotary sletector is located on the motherboard of the mixing valve controller)

Heating circuit that mixing valve affects Connected sensors Rotary selector position

Heating circuit with mixing valve, M2 Flow temperature sensor

Flow tremperature sensor and returntemperature sensor

’2’ (factory set)

’3’




’5’

5303271v1.5

Factory defaultsetting

General Information

13


System with one direct-connected heating circuit without mixing valve and one heating circuit with mixing valve

Boiler with Vitotronic 300Domestic hot water tankHeating circuit without mixingvalveKM-BUS Expansion Module(accessory) for the connection ofseveral KM-BUS participantsHeating circuit with mixing valveMixing valve actuator accessory kitPower Pump ModuleLow water cut-off device

Connectors




Boiler circuit pumpM1 Mixing valve circuit pump*2

DHW production pump(accessory)DHW recirculation pump(field supplied where required)Power supply(120 VAC, 60 Hz)Burner, single-stage*4



Vitotrol remote controlRoom temperature sensorReturn water temperature sensorSwitching Module-V for expandingthe range of control functions


*1 Supply check valve, only required if piping connection is made on one common header.*2 To be connected in actuator accessory kit.*3 In connection with underfloor heating when control measures supply and return water temperature.*4 Included in standard equipment.

5303271v1.5

General Information

14


System with one direct-connected heating circuit without mixing valve and one heating circuit with mixing valve (continued)



Remarks

System type 00: 1 ---------- System without DHWtank 00: 5 (changedautomatically)

System with DHW tank00: 6 (changedautomatically)

Single-/Multi-family house 7F: 1The switching times for theDHW production pump, theDHW recirculation pump andthe holiday program areidentical for all heatingcircuits

7F: 0The switching times for theDHW production pump, theDHW recirculation pump andthe holiday program can beset separately for all heatingcircuits




Mixing valve actuatoraccessory kit (accessory)

---------- ---------- The mixing valve andstrap-on sensor arerecognized automaticallythrough the KM-BUS.For assignment to heatingcircuit refer to page 16.



A0: 0

A0: 0

----------

----------



Room temperature sensor(accessory)

---------- ---------- For measuring the room tem-perature when the remotecontrol cannot be installed ina suitable location. The roomtemperature sensor isactivated via a coding switchon the remote control.


92: 1 ---------- For displaying andtransmitting fault messageswhen the fixed high limithas opened


5303271v1.5

General Information

15





Remarks





Return water temperaturesensor (accessory)

---------- ---------- For measuring the returnwater temperature. Thereturn water temperaturesensor is activated via acoding switch in the actuatoraccessory kit.

Flue gas temperaturesensor (accessory)

---------- ---------- For displaying the flue gastemperature and formonitoring high limit values

5303271v1.5

General Information

16





Effective for heating circuit with mixingvalve (M1)


Coding switch settings on Vitotrol 200 or Vitotrol 300

(Coding switch on rear of remote control)The respective remote control must be assigned to a heating circuit via the coding switches.



Heating circuit(boiler circuit, factory default setting)Heating circuit is assigned to heatingcircuit selector button

Heating circuit M1(mixing valve circuit)Heating circuit is assigned to heatingcircuit selector button











’3’




’5’

5303271v1.5


General Information

17


System with two heating circuits with mixing valves

Boiler with Vitotronic 300Domestic hot water tankHeating circuit with mixing valve 1Mixing valve actuator accessory kitHeating circuit with mixing valve 2Mixing valve actuator accessory kitKM-BUS Expansion Module(accessory) for the connection ofseveral KM-BUS participantsPower Pump Module

I Low water cut-off device

Connectors




M1 Mixing valve circuit pump 1*2

M2 Mixing valve circuit pump 2DHW production pump(accessory)DHW recirculation pump(field supplied where required)Power supply(120 VAC, 60 Hz)Burner, single-stage*4



Vitotrol remote controlRoom temperature sensorReturn water temperature sensor

Switching Module-V for expandingthe range of control functionsKM-BUS Expansion Module

Flue gas temperature sensor

*1 Supply check valve, only required if piping connection is made on one common header.*2 To be connected in the actuator kit.*3 In connection with underfloor heating when control measures supply and return water temperature.*4 Included in standard equipment.

5303271v1.5

I

General Information

18


System with two heating circuits with mixing valves (continued)


Factory default setting Settings changes

Remarks

System type 00: 1 System without DHWtank 00: 7

System with DHWtank 00: 8

Coding is automaticallychanged to ”00: 9” or”00: 10”, must be resetmanually






Mixing valve actuatoraccessory kit(accessory)

---------- ---------- The mixing valve andstrap-on sensor arerecognized automaticallythrough the KM-BUS.For assignment to heatingcircuit see page 20.



A0: 0

A0: 0

----------

----------



Room temperature sensor(accessory), in conjunctionwith remote control

---------- ---------- For measuring the roomtemperature when theremote control cannot beinstalled in a suitablelocation. The roomtemperature sensor isactivated via a coding switchon the remote control.


92: 1 ---------- For displaying andtransmitting fault messageswhen the fixed high limithas opened




5303271v1.5

General Information

19





Remarks






---------- ---------- For displaying the flue gastemperature and formonitoring high limit values.The flue gas temperaturesensor is automaticallyrecognized.

5303271v1.5

General Information

20





Effective for heating circuit with mixingvalve 1, M1

Effective for heating circuit with mixingvalve 2, M2(Set coding switch 1 to ”ON”)


Coding switch settings on Vitotrol 200 or Vitotrol 300 (Coding switch on rear of remote control)The respective remote control must be assigned to a heating circuit via the coding switches.



Heating circuit with mixing valve 1Heating circuit is assigned to heatingcircuit selector button



Heating circuit with mixing valve 2Heating circuit is assigned to heatingcircuit selector button










’3’




’5’

5303271v1.5


General Information

21


System with one direct-connected heating circuit without mixing valve and two heating circuits with mixing valves

Boiler with Vitotronic 300Domestic hot water tankHeating circuit with mixing valve 1Mixing valve actuator accessory kitHeating circuit with mixing valve 2Mixing valve actuator accessory kitKM-BUS Expansion Modulefor the connection of severalKM-BUS participantsHeating circuit without mixing valvePower Pump ModuleLow water cut-off device

Connectors




M1 Mixing valve circuit pump 1*2

M2 Mixing valve circuit pump 2Heating circuit pumpDHW production pump(accessory)DHW recirculation pump(field supplied where required)Power supply(120 VAC, 60 Hz)Burner, single-stage*4



Vitotrol remote controlRoom temperature sensorReturn water temperature sensor

Switching Module-V for expandingthe range of control functions


*1 Supply check valve only required if piping connection is made on one common boiler return.*2 Connected in actuator accessory kit.*3 In connection with underfloor heating when control measures supply and return water temperature.*4 Included in standard delivery of boiler.

5303271v1.5

2

General Information

22


System with one direct-connected heating circuit without mixing valve and two heating circuits with mixing valves (continued)



Remarks

System type 00: 1 ---------- System without DHWtank 00: 9(changed automatically)

System with DHWtank 00: 10(changed automatically)






Mixing valve actuatoraccessory kit (accessory)

---------- ---------- The mixing valve andstrap-on sensor arerecognized automaticallythrough the KM-BUS.For assignment to heatingcircuit see page 24.



A0: 0

A0: 0

----------

----------



Room temperature sensor(accessory), in conjunctionwith remote control

---------- ---------- For measuring the roomtemperature when theremote control cannot beinstalled in a suitablelocation. The roomtemperature sensor isactivated via a coding switchon the remote control.


92: 1 ---------- For displaying andtransmitting fault messageswhen the fixed high limit isactivated


5303271v1.5

General Information

23





Remarks








---------- ---------- For displaying the flue gastemperature and formonitoring limit values

5303271v1.5

General Information

24



Coding switch settings for mixing valve motor, part # 7133 392 (old version)(Coding switches on mother board of mixing valve motor)

Effective for heating circuit with mixingvalve 1, M1

Effective for heating circuit with mixingvalve 2, M2(Set coding switch 1 to ”ON”)


Coding switch settings on Vitotrol 200 or Vitotrol 300 (Coding switch on rear of remote control)The respective remote control must be assigned to a heating circuit via the coding switches.



Heating circuit without mixing valve(boiler circuit, factory default setting)

Heating circuit is assigned to heatingcircuit selector button

Heating circuit with mixing valve M1Heating circuit is assigned to heatingcircuit selector button



Heating circuit with mixing valve M2Heating circuit is assigned to heatingcircuit selector button

Coding switch 2 to ”ON” Coding switch 1 to ”OFF”Coding switch 2 to ”ON”









’3’




’5’

5303271v1.5


Service Information

25

Controls and display elements

A Heating circuit selectionB Reduced room temperatureC DHW temperatureD Standard room temperatureE Standby modeF DHW only

G Heating and DHWH Economy modeK Party modeL InformationM Standard settingsN Acknowledgment/Confirmation

O Adjusting valuesP Time programsR Holiday programS Time/dateT Heating curve levelU Heating curve slope

Checking the heating circuit allocation

Check whether the label for heatingcircuit allocation has been affixed tothe corresponding field of theprogramming unit.

Check the corresponding key beforecommencing all adjustments

Checking the high limit safety cut-out

Hold down the ”TEST” key during thistest (position ”h”).The control thermostat ”R” has nowbeen bypassed. The burner remainsswitched ON until the boiler watertemperature has reached the safetytemperature and the high limit safetycut-out (FHL) has switched OFF.

After the Burner has been shut down bythe high limit safety cut-out:Release the “Test” keyWait until the boiler watertemperature has dropped 15-20Kbelow the selected safetytemperature, then reset the high limitsaftey cut-out by pressing “ E “.

Changing the display language

1.Press . This displays the outdoortemperature.

2. Select the required language with . 3. Confirm with .

5303271v1.5

Boiler temp.

Mo

ABC D E

U T S PR O

NM

L K H

F

G

Service Information

26

Overview of Service Levels

Function Button combination Access Exit

Diagnosis (see section entitled“Diagnosis”)

and Press both buttonssimultaneously for approx.2 seconds

Press

Coding level 1 and Press andsimultaneously for approx.1 second

Coding level 2 and , then Press andsimultaneously for approx. 1second

Reset codings to factory defaultsettings

and , then Press the orbutton to select ”Factorydefault setting? Yes” or”Factory default setting?No” and pressto confirm.

Calling up acknowledged faultmessages

Press for approx. 3seconds.

Press

Relay test and Press buttonssimultaneously for approx.

Press

Fault history and

simultaneously for approx.2 seconds

Press

Operating status Immediately Press

Fault search (see section entitled“Diagnosis”)

(if ”Fault” flashing) Press

Service scan (if ”Service” flashing) Press

Adjust display contrast and Display darkens

and Display brightens

5303271v1.5

Boiler temperture

Service Information

Slope

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

3.4

3.2

3.0

2.8

2.6

2.4

110/230

100/212

70/158

60/140

50/122

40/104

30/86

80/176

90/194

1050

541

032

-523

-20-4

-1014

-155

SupplytempertaureinºC

/ºF

Outdoor temperature in ºC / ºF

Set room temperature in ºC / ºF

3595

2577

3086

2068

541

1559 10

50

27

Adjusting heating curves

Adjusting the heating curve

The heating curves illustrate the relationship between the outdoor temperature and the boiler water or the supplytemperature. To put it simply: The lower the outdoor temperature, the higher the boiler water or supply temperature. Theroom temperature again depends on the boiler water or the supply temperature.

Factory default settings:Slope: = 1.4Shift: = 0

Generally, the heating curve is set:in range A for underfloor heating systems,in range B for low temperature heating systems (according to the Energy Savings Order),in range C for heating systems with boiler water temperatures above 75 ˚C / 167 ˚F.

5303271v1.5

Service Information

28

Adjusting heating curves (continued)

Adjusting the normal room temperature

(for every heating circuit separately)

Normal room temperature:Select the normal day temperature withthe set value adjuster.The value will be automaticallytransferred after approx. 2 seconds.

Reduced room temperature:1. Call up the reduced night temperaturewith tm.

2. Change the value with or .

3. Confirm the set value with .

Examples

Temperature conversion:

˚C ˚F-20 -45 4114 5720 6826 79110 230

Example 1:

Adjustment of the normal room

temperature from 20 to 26 ˚C /

68 to 79 ˚F.

A Boiler water temperature or supplytemperature in ˚C / ˚F

B Outdoor temperature in ˚C / ˚F

C Set room temperature in ˚C / ˚FD Heating circuit pump OFFE Heating circuit pump ON

Accordingly, the heating curve is adjusted along the set room temperature axis, which results in modified start/shutdowncharacteristics of the heating circuit pumps, if heating circuit pump logic is activated.

Changing slope and shift

(for every heating circuit separately)

1. Call up slope with ,adjustable value 0.2 to 3.5;call up shift with ;adjustable value –13 to +40 °C /8.6 to 104 °F.

2. Change the value with or .

3. Confirm the set value with .

A Change slopeB Change shift

5303271v1.5

D E D E

+20 / 68 -20 / -4

3.5

1.4

0.2

A

B

110

230

Outdoor temperature in °C / °F

Supplytemperaturein°C/°F

Service Information

29

Heating circuit control unit

Brief description

The control unit comprises controlcircuits for one heating circuit withoutmixing valve and two mixing valvecircuits. The set supply temperature ofeach heating circuit results from theoutdoor temperature, the set roomtemperature, the operating mode andthe heating curve.

The supply temperature of heatingcircuits without mixing valve is equal tothe boiler water temperature.The supply temperature of the mixingvalve circuit is regulated by a steppedopening or closing of the mixing valve.The mixing valve motor control changesthe actuating and pause times subjectto the control differential(control deviation).

Coding addresses which influence the

heating circuit control

A0 to FbFor a description, see the codingoverview.

Functions

The heating circuit without mixing valveis subject to the boiler watertemperature and its control range limits.The heating circuit pump is the onlyactuator. The supply temperaturesensor registers the supply temperatureof the mixing valve circuits.

Time program

The control unit time switch changes inaccordance with the times programmedin the ”Heating and DHW” programbetween ”Central heating with standardroom temperature” and ”Central heatingwith reduced room temperature”.Every operating mode has its own setlevel.

Outdoor temperature

A heating curve must be set up formatching the control unit to the buildingand the heating system.The heating curve characteristicsdetermine the set boiler watertemperature subject to outdoortemperature. An average outdoortemperature is used for controlpurposes. This comprises the actual andthe adjusted outdoor temperature.

Domestic hot water temperature

With DHW priority:The set supply temperature will be setto 0 ºC/ 32 ºF while the tank isheated up.The mixing valve closes, and theheating circuit pump is switched OFF.Without DHW priority:The heating circuit control unitcontinues to operate with the sameset value.With modulating priority(only in conjunction with a mixingvalve circuit):The heating circuit pump remainsswitched ON. The set supplytemperature of the heating circuitswill be reduced for as long as the setboiler water temperature has not beenreached while the tank is beingheated up.

The set supply temperature is subjectto the difference between the set andthe actual boiler water temperature, theoutdoor temperature, the heating curveslope and coding address ”A2”.

Heating circuit pump logic (economy

mode)

The heating circuit pump is switchedOFF (set supply temperature set to0 ºC), when the outdoor temperatureexceeds the value selected via codingaddress ”A5”.

Room temperature

In conjunction with remote control androom temperature hook-up (observecoding address ”b0”).Compared with the outdoortemperature, the room temperature hasa greater influence on the set boilerwater temperature. This influence maybe changed via coding address ”b2”.In conjunction with the mixing valvecircuit:For a control difference (deviation fromthe actual value) above 2 K roomtemperature, the influence can befurther increased (via coding address”b6”, quick heat-up/quick setback).

Quick heat-up:Only possible for weather-compensatedmode with room temperature hook-up.The set room temperature must beraised by a minimum of 2 K bypressing party key g

changing from reduced mode tostandard modestart-up time optimisation

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

Quick setback:Only possible for weather-compensatedmode with room temperature hook-up.The set room temperature must bereduced by a minimum of 2 K bypressing economy key û

changing from heating mode toreduced modeshutdown time optimisation

Quick setback will stop when the setroom temperature has been reached.

5303271v1.5

Service Information

30

Heating circuit control unit (continued)

Extended economy mode

The heating circuit pump is switchedOFF:if the outdoor temperature exceedsthe value selected via coding address”A6”if the set room temperature is reducedvia coding address ”A9”if the mixing valve has been closedfor 12 min. (mixing valve economyfunction, coding address ”A7”)if the actual room temperatureexceeds the value selected via codingaddress ”b5”

Slab curing function

In conjunction with the mixing valvecircuit

Note

Observe DIN 4725 part 4.

Four different temperature profiles can

be selected for drying the slab. These

profiles are activated via coding address

”F1”.

When the slab curing function isactivated, the heating circuit pump ofthe mixing valve circuit is switched ON,and the supply temperature will be heldat the selected profile. After completion(30 days), the mixing valve circuit willagain be regulated automatically via theset parameters.

Underfloor heating

In conjunction with the mixing valvecircuit

An additional return temperature sensorcan be connected to achieve anoptimum underfloor heating system.The control unit calculates a set returntemperature. Changes are implemented,if the actual return temperaturedeviates from the set returntemperature.The temperature differential may bechanged via coding address ”C7”.When changing from ”Central heatingwith reduced room temperature” to”Central heating with standardtemperature”, the set supplytemperature can be raised by20 % for one hour via code ”C9:1”.

System dynamics – mixing valve circuit

You can influence the controlcharacteristics of the mixing valve viacoding address ”C4”.

Frost protection

When the outdoor temperature reaches+1 ºC/ 34 ºF, a supply temperature of15 to 42 ºC/ 63 to 108 ºF will besafeguarded (two-point control).For changes see coding address ”A3”,variable frost limit.

Supply temperature control

Differential temperature:The differential temperature may beadjusted via coding address ”05”;delivered condition: 8 K.

The differential temperature is thatminimum value, by which the boilerwater temperature should be higherthan the currently required mixing valvecircuit supply temperature.

System with only one or two mixingvalve circuits:The set boiler water temperature willbe automatically held 8 K above theset supply temperature.

System with a heating circuit withoutmixing valve and with a mixing valvecircuit:The set boiler water temperatureoperates in accordance with a specialheating curve. The differentialtemperature of 8 K towards the setsupply temperature is set up at thefactory.

AMax. boiler water temperatureB Slope = 1.8 boiler circuit A1C Slope = 1.2 mixing valve circuit

M2D Boiler water temperature

(at a differential temperature of 8 K)E Lower boiler water temperature

Temperature conversion

°C °F

-20 -45 4114 5720 6826 79110 230

5303271v1.5

Boilerwatertemperatureor

flowtemperaturein°C

Outside temperature in °C

Service Information

31

Heating circuit control unit (continued)

Upper control limit

Electronic maximum limitSetting range: 1 to 127 ºC /34 to 261 ºFChanges via coding address “C6”.

Note

The maximum limit is no replacement

for the underfloor heating system

temperature limiter.

Temperature limiter for underfloorheating:The temperature limiter switches theheating circuit pump OFF, if the setvalue has been exceeded. In suchcases, the supply temperature reducesonly slowly, i.e. it may be several hoursbefore the system restarts againautomatically.

Lower control range limit

Electronic minimum limitSetting range: 1 to 127 ºC /34 to 261 ºFChanges via coding address “C5”.

Control sequence

Mixing valve circuit

The mixing valve motor will not beselected within the ”neutral zone”(±1 K).

Supply temperature drops

(set value –1 K)The mixing valve motor receives thesignal ”Mixing valve open”.

The signal duration lengthens with anincreasing control differential.

The duration of pauses reduces with anincreasing control differential.

5303271v1.5

Service Information

32

Tank temperature control

Brief description

The tank thermostat operates with aconstant temperature. It is the result ofstarting and stopping the tank primarypump.The switching differential is ±2.5K.

While the tank is being heated up, aconstant upper boiler water temperatureis set, and the central heating isswitched OFF (optional tank priority).

Coding addresses which influence the

tank thermostat

54, 55, 56, 58 to 62, 64, 66, 67, 70 to75, 7F, A2.For a description, see the codingoverview.

Functions

Time program

An automatic program or an individualtime program may be selected forheating DHW and the control of theDHW circulation pump.Compared with the heating circuitheat-up phase, DHW heating starts30 minutes earlier in automatic mode.The individual time program enables upto four switching periods per day to beset via the time switch to control theDHW heating and the DHW circulationpump.Any tank heating sequence will becompleted, independent of the timeprogram.

In conjunction with coding address ”7F”

“7F:1” Detached house:Automatic modeThe heating times for heating circuit 1are applied to systems with two orthree heating circuits.Individual time programThe switching times for DHW heatingand the DHW circulation pump havethe same effect on all heating circuits.

”7F:0” Apartment block:Automatic modeThe heating times for the respectiveheating circuit will be applied tosystems with two or three heatingcircuits.Individual time programThe switching times for DHW heatingcan be adjusted separately for eachheating circuit.

DHW priority

With DHW priority (code ”A2:2”):The set supply temperature will be setto 0 ºC / 32 ºF while the tank is beingheated up.The mixing valve closes, and theheating circuit pump is switched OFF.Without DHW priority:The heating circuit control unitcontinues to operate with the sameset value.With modulating priority(only in conjunction with a mixingvalve circuit):The heating circuit pump remainsswitched ON. The set supplytemperature of the heating circuitswill be reduced, for as long as the setboiler water temperature has not beenreached during tank heating. The setsupply temperature is subject to thedifference between the set and theactual boiler water temperature, theoutdoor temperature, the heatingcurve slope and coding address ”A2”.

Frost protection

The DHW tank will be heated to 20 ºC /68 ºF if the DHW temperature fallsbelow 10 ºC / 50 ºF.

Auxiliary function for DHW heating

This function is activated by providing asecond set DHW temperature viacoding address ”58”, and activating the4th DHW phase for DHW heating.

Set DHW temperature

The set DHW temperature can beadjusted between 10 and 60 ºC / 50and 140 ºF. The set range can beextended to 95 ºC / 203 ºF via codingaddress ”56”.The set default value of theprogramming unit and/or theVitotrol 300 remote control can beapplied via coding address “66”.

DHW circulation pump

It delivers hot water to the draw-offpoints at adjustable times.Up to four control periods can be set atthe time switch.

Auxiliary circuits

DHW heating can be blocked or enabledby changing over the heating program.An external contact in conjunction withswitching module V can be used tobriefly select the DHW circulationpump. The time may be adjusted viacoding address ”74”.

Systems with Vitosolic

A third set DHW temperature can bedefaulted via coding address ”67”.Re-heating will be suppressed above theselected temperature. The DHW tankwill only be heated by the solar heatingsystem.

5303271v1.5

Service Information

33

Tank temperature control (continued)

Control sequence

Pump run-on

The tank primary pump runs on aftertank heating, until the difference between the boilerwater and the DHW temperature isless than 7 Kor

until the weather-compensated setboiler water temperature has beenreachedor

until the actual temperature is 5 Khigher than the set DHWtemperatureor

until the maximum run-on time(adjustable via coding address ”62”)has been reached.

Without the tank primary pumprunning on (code “62:0”)

Code ”55:0”

Tank heating

DHW tank goes cold

(set value –2.5 K, adjustable via codingaddress “59”)The set boiler water temperature isadjusted 20 K higher than the set DHW(adjustable via coding address ”60”).Starting the tank primary pumpsubject to boiler temperature (code“61:0”):The pump starts when the boilerwater temperature is 7 K higher thanthe DHW temperature.Immediate start of the tank primarypump (code “61:1”).

The DHW tank is hot

(set value +2.5 K)The set boiler water temperature isreturned to the weather-compensatedvalue.

Code ”55:1”

Adaptive tank heating

With adaptive tank heating, the speedof the temperature rise during DHWheating is taken into account.Also taken into account is the question,whether the boiler will be required tosupply heat after the tank has beenheated up or whether residual boilerheat should be transferred to the DHWtank.Accordingly, the control unit determinesthe burner and circulation pumpshutdown points to prevent the setDHW temperature being substantiallyexceeded after the tank has beenheated up.

5303271v1.5

Service Information

34

Temperatures, Boiler Coding Cards and Scans

Select the heating circuit with theheating circuit selector buttons.

Each heating circuit is scanned

separately.

Press and simultaneously forapprox. 2 seconds.

Access diagnosis level.

Select the required data for scanningwith the or button.

Press . Exit diagnosis level.

The following values can be scanned:

Damped outdoor temp.

Current outdoor temp.

Desired supply temp.Current supply temp.

Slope A1/M2/M3.Shift A1/M2/M3.

Desired boiler temp.Current boiler temp.

Desired DHW temp.Current DHW temp.

Desired return temp.Current return temp.

Desired room temp.Current room temp.

Max. flue gas temp.

Current flue gas temp.

Boiler coding card

Scan 1 to Scan 5

The damped outdoor temperature can

be reset to the current outdoor

temperature by pressing .

Only displayed if supply temperature

sensor connected.

Only displayed if tank temperature

sensor connected.

Only displayed if return water

temperature sensor connected.

Only displayed if remote control or

separate room temperature sensor

connected.

Only displayed if flue gas temperature

sensor connected.

The max. flue gas temperature can be

reset to the current value by pressing

.

See “Overview of Boiler Coding

Cards”.

See following pages for scans 1 to 5.

5303271v1.5

Boiler temperature

Diagnosis

Outdoor temp.damped

ServiceInformation

35

Tem

pera

ture

s,Boile

rC

odin

gC

ard

sand

Scans

(contin

ued)

8

ann 2-wire BUS

Software version

switching module

V

Software version

remote control

mixing valve circuit

M3

Software version

variable speed

pump


M3

Software version

Solar control unit

8

Number of Viessman

participants

Software version

extension kit


M3

Operating mode


M3

0 w/o remote

control

1 with

Vitotrol 200

2 with

Vitotrol 300

Variable speed

pump


M3

0 excl.

1 Wilo pump

2 Grundfos pump

8

Number of KM BUS

participants

Software version

expansion module

Viessmann 2-wire

BUS

Software version

remote control


M2

Software version

variable speed

pump


M2

8

Burner type

0 single stage

1 two-stage

2 modulating

Software version

extension kit


M2

Operating mode


M2

0 w/o remote

control

1 with

Vitotrol 200

2 with

Vitotrol 300

Variable speed

pump


M2

0 excl.

1 Wilo pump

2 Grundfos pump

N/A

SCAN8

s ”00”)

Software version

programming unit

Software version

remote control

boiler circuit

Software version

variable speed

pump

boiler circuit

BRIEF S8

System design

(see coding address

Software version

control unit

Operating mode

boiler circuit

0 w/o remote

control

1 with

Vitotrol 200

2 with

Vitotrol 300

Variable speed

pump

boiler circuit

0 excl.

1 Wilo pump

2 Grundfos pump

Brief scan

1

2

3

4

5

5303 271 v1.5

Service Information

36

Relay Test


Relay test activated.

Select relay outputs with the orbutton.

Press .

Relay test terminated.

The following relay outputs can beselected:

Burner ON

Burner stage 1 ON

Burner stages 1 + 2 ON

Burner modulation up

Burner modulation hold

Burner modulation down

Heat pump ON

Heat pump M1 ON

Heat pump M2 ON

Mixing valve 1 open

Mixing valve 2 open

Mixing valve 1 closed

Mixing valve 2 closed

DHW tank pump ON

DHW recirculation pump ON

Compiled fault indicator ON

The following lists may differ

according to system equipment and

coding.

LED of selector button ON.







Only displayed if Switching Module-V

is connected.

The relay switches with a delay of up

to 1 minute.

5303271v1.5

Relay test

Burner ON

IMPORTANT

Service Information

37

Scanning Operating Status Information

Select the heating circuit with theheating circuit selector buttons.

Each heating circuit is scanned

separately.

Press . Operating status scanning mode is

activated.

Select the required operating statusdata for scanning with the or

button.

Press . Exit the operating status scanning

mode.

The following operating statusinformation can be scanned, subject tothe actual system equipment andcoding:

Heating circuits A1, M2 and M3

– Holiday program– Departure and return date– Current outdoor temperature– Current boiler water temperature– Actual DHW tempemperature– Supply temperature (actual value)(only for mixing valve circuits M2and M3)

– Return temperature (actual value)(only for mixing valve circuits M2and M3)

– Current flue gas temperature

– Current room temperature

– Burner operating hours– Number of burner starts– Fuel consumption

– Actual solar DHW temperature– Collector temperature– Solar energy in kWh– Time/ Date– Operating status of burner– Operating status of heating circuitpump

– Operating status of DHWproduction pump

– Operating status of DHWrecirculation pump

– Mixing valve open/closed– Solar circuit pump ON/OFF– Hours run – solar circuit pump– Different languages

The holiday program, departure and

return date are only displayed when

the holiday program is activated.

For coding address”C7” a value

greater than “0” must be set.


sensor is connected.

Only displayed if Vitotrol or separate

room temp. sensor is connected.

Reset burner operating hours, number

of burner starts and fuel consumption

after maintenance has been

performed. By pressing , the values

can be individually reset to zero.

Display only, if “26” or “29” is set via

the coding addresses.

In conj. with solar heating system.





5303271v1.5

Boiler temperature

Service Information

38

Scanning Operating Status Information (continued)

Heating circuit with mixing valve

(1 or 2)

– Holiday program– Departure date– Return date– Current outdoor temperature– Supply temperature– Current boiler water temperature– Domestic hot water temperature1st tank temperature sensor

– Domestic hot water temperature2nd tank temperature sensor

– Return water temperature– Current flue gas temperature

– Current room temperature

– Burner operating hours– Number of burner starts– Fuel consumption

– Time– Date– Operating status of burner– Operating status of heating circuitpump

– Operating status of DHW productionpump

– Operating status of DHWrecirculation pump

– Operating status of mixing valve– Different languages

The holiday program, departure and

return date are only displayed when

the holiday program is activated.


sensor is connected.

Only displayed if Vitotrol or separate

room temperature sensor is

connected.

Reset burner operating hours, number

of burner starts and fuel consumption

after maintenance has been

performed. By pressing , the values

can be individually reset to zero.

5303271v1.5

Service Information

39

Scanning and Resetting the Service Information

When the limit values selected via coding addresses ”1F”, ”21” and ”23” (see

“Additional Information” for individual coding addresses) are reached, “Service” will

appear on the display and the red fault indicator will flash.

1. Press . Service scan is activated.

2. Scan the individual serviceinformation (if more than onemessage is stored) with the or

button.

3. Press and confirm the display”Acknowledge: Yes” by pressing

.

The word “Service” will disappear and

the red fault indicator will continue to

flash.

An acknowledged service message

can be displayed again by pressing

(for approx. 4 seconds).

4. Press . Service scan is terminated.

5. After performing the maintenance,reset coding ”24:1” to ”24:0”.

Red fault indicator is turned off.

If coding address ”24” is not reset,

the word “Service” will reappear at

07:00 hrs on Monday.

6. After performing the maintenancePress .Reset burner operating hours,number of burner starts and fuelconsumption.

Press .

See ”Scanning Operating Status

Information”.

7. After performing the maintenancePress and simultaneously forapprox. 4 seconds.

Reset ”Max. flue gas temp.” to thecurrent value by pressing .

Press .

See ”Temperatures, Boiler Coding

Cards and Scans”.

5303271v1.5

Service

MFlue gas temperature

ºC180

IMPORTANT

Boiler temperature

IMPORTANT

Components

40

Components from the parts list

Boiler temperature sensor and tank temperature sensor

Check sensor

1. Pull plug 3 or from control.

2. Check the sensor resistance atterminals 1 and 2 of the plug.

3. Compare the measurement with theactual temperature displayed (forscanning.)Check the installation and replacesensor, if necessary, in case ofsevere deviation.

Specification

Protection: IP 32Permiss. ambienttemperatureduring operation– boilertemperaturesensor: 0 to +130 ºC

32 to 266 ºF– tanktemperaturesensor: 0 to +90 ºC

32 to 194 ºFduring storageand transport: –20 to + 70 ºC

-4 to 158 ºF

5303271v1.5

Resistancein

ΩΩ ΩΩ

Boiler water temperature32 68 104 140 176 212 248 284

ºCºF

Components

41

Components from the parts list (continued)

Outdoor temperature sensor

Checking the outdoor temperature

sensor

1. Pull plug from control.


3. Disconnect wires from the sensor, ifactual values deviate severely fromthe curve, repeat the sensor test andcompare with the actual temperature.

4. Depending on the result, replacecable or outdoor temperature sensor.

5. Scan actual temperature.

Specification

Protection: IP 43Permiss. ambienttemperatureduring operation,storage andtransport: –40 to +70 ºC

–40 to +158 ºF

5303271v1.5

Resistancein

400

420

440

460

480

500

520

540

560

580

600

-40 -30 -20 -10 0 10 20 30

Outdoor temperature in °C / °F

-40 -22 -4 14 32 50 68 86

Components

42

Flue gas temperature sensor

Connection

The sensor is plugged into socket ”15”at the control unit.

Checking the flue gas temperature

sensor

1. Pull plug 15 from control.


3. Compare the measurement with theactual temperature displayed.Check the installation and replacesensor, if necessary, in case ofsevere deviation.

Specification

Protection: IP 60Permiss. ambienttemperatureduring operation: 0 to + 600 ºC


-4 to 158 ºF

5303271v1.5

0500

40 80 120 160 200 240 280

540

580

620

660

700

740

780

820

860

900

940

980

1020

Resistancein

ΩΩ ΩΩ

Flue gas temperature in °C / °F

32 104 176 248 360 392 464 536

Components

43

Mixing valve circuit extension kit

For mixing valve installation, incl. mixing valve motor, part no. 7178 995For wall mounting, separate mixing valve motor, part no. 7178 996

Contact temperature sensor, part no. 7183 288

For recording the supply and return temperature.

Connection

The sensor is plugged into socket ”2”or ”17” at the mixing valve extension.

Check sensor

1. Pull plug or from control



Specification

Protection: IP 32Permiss. ambienttemperatureduring operation: 0 to +100 ºC


-4 to 158 ºF

5303271v1.5

30 40 50 60 7070 80 90540

560

580

600

620

640

660

680

700

720

740

20 100

Resistancein

68 86 104 122 140 158 176 194 212

Supply/Return temperature in °C / °F

Components

44

Extension kit for mixing valve circuit (continued)

Mixing valve extension

Summary of electrical connections,

part no. 7133 392 (old version)

AMixing valve extensionB Mixing valve motor,

part no. 7178 995Wall mounting base forpart no 7178 996

CMain PCBD Heating circuit pump socket via plug

120 VAC/ 60HzE Power supply socket via

plug 120 VAC/ 60HzF Fuse F1G ON/OFF switch

Low voltage connections

Supply temperature sensorReturn temperature sensor(accessories)No functionKM BUS

Pump 120 V~ connection5303271v1.5

CD EF G

141

14517 2

BA

M1~

20

A

Components

45


Summary of electrical connections,

part no. 7837 524 (new version)

F1 FuseS1 Rotary selector

120V plugs

Heating circuit pump (on site)Power supply

Power supply for additionalcontroller for heating circuitwith mixing valve

Mixing valve motor

Low voltage connections

Supply temperature sensorReturn temperature sensor(optional accessory for Vitotronic300, type KW3)KM BUS

5303271v1.5

Components

46


Changing the rotational direction, part no. 7133 392 (old version)

The rotational direction must be changed for the installation examples on page and for systems with Modular-Divicon.

A ON/OFF switchB Rotational direction switch on the

main PCB

1. Open mixing valve extension.Rotational direction switch:Position I:Delivered conditionPosition II:Changing the rotational direction

2. Close mixing valve extension.

3. Check the rotational direction:Switch ON the power supply and theON/OFF switch; the equipment thenimplements a relay test.

Relay test

The mixing valve runs for approx.150 s into position ”Close”; theheating circuit pump runs for approx.10 sThe mixing valve runs for approx.10 s into position ”Open”The mixing valve runs for approx.10 s into position ”Close”Standard control mode.

Note

A relay test is implemented every time

the system is switched ON.

Mixing valve insert conversion (if required), see mixing valve installation instructions.

Factory supplied

of the mixing valve motor rotationaldirection

Change the mixing valve motor rotationaldirection for these installation examples

HR Heating return KR Boiler returnHV Heating supply KV Boiler supply

5303271v1.5

An electric shock can be life

threatening.

When opening the equipment, switch

OFF the ON/OFF switch and mains

voltage, for example at the fuse or the

main electrical isolator.

DANGERB

A

I II

Components

47


Changing the rotational direction, part no. 7837 524 (new version)

On systems with Modular-Divicon.

HR Heating return KR Boiler returnHV Heating supply KV Boiler supply

1. Switch OFF the power supply to the control unit.

2. Remove the mixing valve controller cover.

3. Interchange wires BN and BK at plug 52 to change therotational direction.

4.Connect the controller.5.Check the rotational direction

Note: If a fault occurs during commissioning, check themixing valve installation (see mixing valve installationinstructions).

5303271v1.5

Components

ON

1234

S1

48


Coding

(DIP switch on the main PCB)

S1.4 must always be set to OFF.

Affects mixing valve circuit M2

Delivered condition

Affects mixing valve circuit M3S1.1 to ON

When connecting a return temperaturesensorS1.3 to ON

5303271v1.5

ON

1234

S1

ON

1234

S1

Components

49

Remote control

Vitotrol 200, part no. 7450 017

(with integral room temperature sensor for room temperature hook-up in conjunction with a mixing valve circuit)Settings:Day temperatureHeating programEconomy and party mode

Function changes can be made via coding addresses ”A0”, ”b0” to ”b9”, ”C0” to ”C2”, ”C8”, ”E1”, ”E2” and “F2” (seeoverview).

AWall mounting fixture forVitotrol 200

B To the control unit or to theKM BUS distributor

Connection

2-wire cable (total cable lengthmax. 50 m/ 164 ft)

C PCB DIP switches(back of the top casing).

Remote controlaffects

DIP switch setting

Heating circuitwithout mixingvalve A1(heating circuitselection key“1”)

Deliveredcondition

ON

123 4

Mixing valvecircuit M2(heating circuitselection key “2”)

ON

123 4


ON

123 4

When connecting a separate roomtemperature sensor, set DIP switch”S6.3” to ON.

Specification

Power supply via KM BUS.Safety class: IIIProtection: IP 30Permiss. ambienttemperatureduring operation: 0 to +40 ºC


–40 to + 149 ºFSetting range forset room temp.: 10 to 30 ºC/

50 to 86 ºF;adjustable to3 to 23 ºC /37 to 73 ºF or17 to 37 ºC/63 to 98 ºFvia codingaddress “E1”

Reduced set room temperatureadjustment on the control unit.

5303271v1.5

A

B

145

ONS6

12 3 4

C

ON

123 4

Components

1234

ON

50

Remote control (continued)

Vitotrol 300, part no. 7179 060

(with integral room temperature sensor for room temperature hook-up in conjunction with a mixing valve circuit)Settings:Day and night temperatureDomestic hot water temperature

Heating programHoliday program

Switching timesEconomy and party mode

Function changes can be made via coding addresses ”A0”, ”b0” to ”b9”, ”C0” to ”C2”, ”C8”, ”E1”, ”E2” and “F2” (seeoverview).

AWall mounting fixture forVitotrol 300

B To the control unit or to theKM BUS distributor

Connection

2-wire cable (total cable lengthmax. 50 m/ 164 ft)

A PCB DIP switch (back of the topcasing).

Remote controlaffects

DIP switchsetting

Heating circuitwithout mixingvalve A1(heating circuitselection key “1”)

Delivered cond.

1234

ON


1234

ON


1234

ON

When connecting a separate roomtemperature sensor, set DIP switch”S3.3” to ON.

Specification

Power supply via KM BUS.Safety class: IIIProtection: IP 30Permiss. ambient temperatureduring operation: 0 to +40 ºC


–40 to + 149 ºFSetting range forset room temp.: 10 to 30 ºC/

50 to 86 ºF;adjustable to3 to 23 ºC /37 to 73 ºFor17 to 37 ºC/63 to 98 ºFvia codingaddress “E1”

Red. set room temp: 3 to 37 ºC37 to 98 ºF

5303271v1.5

A

B

145

Components

51


Connecting several remote control units

When connecting several remote controls to the control unit, install a terminal box on site.

Version 1

A To control unitB Terminal box (on site)C Vitotrol 1D Vitotrol 2E Vitotrol 3

On-site connection via terminal box:Connect in accordance with thediagram

The total length of all KM BUS cablesshould be limited to 50 m / 164 ft

5303271v1.5

145A

B

max.15 m / 50 ft

D

max.15 m / 50 ft

E

max.15 m / 50 ft

C

Components

52


Version 2

A To control unitB Terminal box (on site)C Vitotrol 1D Vitotrol 2E Vitotrol 3F Further BUS participants

If several remote control units andadditional KM BUS participants areconnected, make the connections viaa terminal box (on-site) as shown inthe diagram

The total length of all KM BUS cablesshould be limited to 50 m / 164 ft

5303271v1.5

145A

max.

15 m / 50 ft

B

C D

F

E

max. 15 m / 50 ftmax. 15 m / 50 ft

Components

53

Room temperature sensor

The room temperature sensor measures the actual room temperature, if the remote control unit cannot be installed in asuitable location.

A Remote controlB To the control unitC Room temperature sensor

Connection

Two-wire cable with a maximumlength of 35 m / 115 ft and across-section of 1.5 mm2 (copper).Set DIP switch 3 on the remotecontrol to ON.

Check the room temperature sensor

1. Disconnect the wires from thesensor.

2. Check the sensor resistance atterminals ”9” and ”13b”.


Specification

Protection: IP 30Permiss. ambienttemperatureduring operation: 0 to + 40 ºC

32 to 104 ºFduring storageand transport: –20 to +65 º C

–4 to +149 ºF

5303271v1.5

145

C

3 41 2

A

B

0

Resistancein

5005 10 15 20 25 30 35 40

510

520

530

540

550

560

570

580

600

590

Room temperature in °C / °F

32 41 50 59 68 77 86 95 104

Components

54

Switching module V

Switching module V for extending the control unit functions.Observe the coding addresses “32”, “33” and “74” (see overview).Switching module V is recognised automatically by the control unit(code “94:2”).

A Switching module V wiring chamberB To the control unit

Please note:

Trouble-free operation cannot beassured if connectors are incorrectlypositioned.Never alter the allocation ofconnections to sockets in switchingmodule V.

DE1 External heating programchangeover for heating circuitwithout mixing valve (also seecoding address “d5”)

DE2 External heating programchangeover for mixing valvecircuit M2

DE3 External burner blockingDE4 External burner demand

(set minimum boiler watertemperature)

DE5 External burner demand(stage 2)

DE6 External fault message inputDE7 Short-term operation of the DHW

circulation pumpKM BUS

Central fault messageNominal relay rating:1(0.5) A 24 V~/120VAC10 mA 24 V–

5303271v1.5

B

A

X3 X4 X5 X6 X7 X8 X9 X1 X2

Components

55

KM BUS expansion module

The connection between the control unit and the remote controls, the remote monitoring equipment and switching module Vis provided by the KM BUS distributor.

A KM BUS distributor, wiringarrangement area

B Terminals for the connection ofadditional KM BUS participants(connection to terminals ”X8.1”

and ”X8.2”,”X8.3” and ”X8.4” or”X8.5” and ”X8.6”)

C KM BUS user connections (sockets”X2” to ”X7”)

D To the control unit

Boiler coding card

To match the control unit function to the boiler.

5303271v1.5

3 2 16 5 4

X1 X2 X3 X4 X5 X6 X7

Components

56

Input extension module 0-10V

To default an additional set boiler temperature via a 0 to 10 V input in the range 10 to 100 ºC / 50 to 212 ºF or 30 to 120 ºC/86 to 248 ºF.To signal reduced mode and regulate a heating circuit pump to a lower speed.

Power supply 120 V/60 HzaVF 0 to 10 V input

KM BUS to control unit

Potential free contact

AMains isolator (if required)B DIP switch (see table)

DIP switch Function

12344

ONONONONOFF

Reduced mode – heating circuit A1Reduced mode – mixing valve circuit M2Reduced mode – mixing valve circuit M3Set value default 10 to 100 ºC/ 50 to 212 ºFSet value default 30 to 120 ºC / 86 to 248 ºF

Note

Out of switches 1 to 3, only one switch may be set to ON.

5303271v1.5

OFF

A

Electronics24V

5V

L1

40

120V

157 144 145

N S Ö P 1 2 3 1 2 3

1 2 3 4

ONF1T250mA

B

– +

Troubleshooting

57

Diagnosis

Fault with fault message on the programming unit

When an fault message is transmitted,- Fault -flashes in the display 1 of theprogramming unit.The red fault indicator 2 flashes.

Refer to fault code tables in this

section for fault code analysis.

Search fault

Open the hinged cover on the pro-gramming unit and press .

Other fault codes which may bestored can be called up by pressingthe or button.

The fault can be acknowledged by

pressing . The fault message in

the display will disappear; the red

fault indicator continues to flash. If

an acknowledged fault is not

corrected by 07:00 hrs on the

following day, the fault message will

reappear in the display.

To retrieve an acknowledged fault

message

Press for approx. 2 seconds.

Select the acknowledged fault bypressing the or button.

Fault is displayed.

5303271v1.5

Fault

MFault

MoºC57

MFault

- 2 b7

Acknowledge? Yes

Outdoor sensor

- 1 10IMPORTANT

Troubleshooting

58

Diagnosis (continued)

Display The red fault indicator will flash

whenever a fault has been detected.

Fault indicator

Fault with fault message on control unit

Fault

code

display

Faultindicator(red)

Behavior of system Cause Corrective action

00 Off Normal operation No Fault No action required

0f Off Normal operation Maintenance required Perform maintenance

10 Flashes Operates on basis of 32 ºF / 0 ºCoutdoor temperature

Short circuitOutdoor temperature sensor

Check outdoor temperaturesensor

18 Flashes Operates on basis of 32 ºF / 0 ºCoutdoor temperature

Open circuitOutdoor temperature sensor

Check outdoor temperaturesensor

20 Flashes Mixing valve is closed Short circuitSupply temperature sensor ofmixing valve circuit 1

Check supply temperature sensor

21 Flashes Operation without influence ofreturn water temperature

Short circuitReturn water temperature sensorof mixing valve circuit 1

Check return water temperaturesensor

28 Flashes Mixing valve is closed Open circuitSupply temperature sensor ofmixing valve circuit 1


29 Flashes Operation without accounting forreturn water temperature

Open circuitReturn water temperature sensorof mixing valve circuit 1


30 Flashes With DHW tank:DHW production pump ON,boiler kept at desired tank temp.

Without DHW tank:Boiler controlled on basis of AHL

Short circuitBoiler temperature sensor

Check boiler temperature sensor

38 Flashes With DHW tank:DHW production pump ON,boiler kept at desired tank temp.

Without DHW tank:Boiler controlled on basis of AHL

Open circuitBoiler temperature sensor

Check boiler temperature sensor

5303271v1.5

Fault

TEST

IMPORTANT

Troubleshooting

59


Fault with fault message on control unit (continued)

Fault

code

display

Faultindicator(red)


40 Flashes Mixing valve is closed Short circuitSupply temperature sensor ofmixing valve circuit 2


41 Flashes Operation without accounting forreturn water temperature

Short circuitReturn water temperature sensorof mixing valve circuit 2


48 Flashes Mixing valve is closed Open circuitSupply temperature sensor ofmixing valve circuit 2


49 Flashes Controlled without influence ofreturn water temperature

Open circuitReturn water temperature sensorof mixing valve circuit 2


50 Flashes DHW production pump ON:Desired boiler temperature =desired tank temperature,priority control cancelled

Short circuitTank temperature sensor 1

Check tank temperaturesensor 1

51 Flashes Controlled on basis of tanktemperature sensor 1

Short circuitTank temperature sensor 2


58 Flashes DHW pump ON:Desired boiler temperature =desired tank temperature,priority control cancelled

Open circuitTank temperature sensor 1


59 Flashes Controlled on basis of tanktemperature sensor 2

Open circuitTank temperature sensor 2


92 Flashes Control ModeOnly the solar control unit faultcodes will be displayed

Short circuit, collector temp.sensor, connects to Vitosolic S1

Check the solar control unitsensor

93 Flashes

Only the solar control unit faultcodes will be displayed

Short circuit, collector temp.sensor, connects to Vitosolic S2

sensor

94 Flashes Short circuit, collector temp.sensor, connects to Vitosolic S3

9AAa Flashes Lead broken, collector temp.sensor, connects to Vitosolic S1

96 Flashes Lead broken, collector temp.sensor, connects to Vitosolic S2

9c Flashes Lead broken, collector temp.sensor, connects to Vitosolic S3

9f Flashes Error Solar control unit; displayedif an error without fault codeoccurs at the solar control unit

Check the solar control unit

b0 Flashes Normal operation Short circuitFlue gas temperature sensor

Check flue gas temperaturesensor

b1 Flashes Normal operation Communication errorProgramming unit

Check connections, if necessaryreplace programming unit

b4 Flashes Constant temperature mode Internal fault Check electronics board

5303271v1.5

Troubleshooting

60



Fault

code

display

Fault

indicator

(red)

Behaviour of system Cause Corrective action

b5 Flashes Normal operation Internal fault Check electronics board

b6*1 Flashes Constant temperature mode Invalid hardware code Check mother board

b7 Flashes Boiler controlled on basis ofadjustable high limit

Internal faultBoiler coding card

Insert boiler coding card orreplace if defective

b8 Flashes Normal operation Open circuitFlue gas temperature sensor

Check flue gas temperaturesensor

b9 Flashes Normal operation Internal fault Acknowledge fault, repeat datainput

bAa Flashes Mixing valve 1 continuesin normal control mode

Communication errorMixing valve actuator accessorykit

Check connections

bb*2 Flashes Mixing valve 2 continuesin normal control mode

Communication errorMixing valve actuator accessorykit

Check connections

bCc Flashes Normal operation without remotecontrol

Communication errorVitotrol remote control,boiler circuit

Check connections and Vitotrolremote control

bd Flashes Normal operation without remotecontrol

Communication errorVitotrol remote control,mixing valve circuit 1


be Flashes Controlled operation withoutremote control

Communication errorVitotrol remote control,mixing valve circuit 2


Cc1 Flashes Boiler is cooling down External safety equipment Check connection of connector

Check external safetyequipment

Check fault indication module

c2 Flashes Control Mode, normal operation Lead broken, KM BUS to thesolar control unit

Check the KM BUS cable and thesolar control unitWithout solar control unit:Set code “54:0”

Cc4 Flashes Communication error, inputextension module 0 to 10V

Check connections and cables orleads, if required replace the inputextension module.Without input extension module:Set code “9d:0”

Cc5 Flashes Normal operation, max. pumpspeed

Communication errorVariable speed pump, boilercircuit

Check setting of coding address”E5”; check coding switchsetting of heating circuit pump

Cc6 Flashes Normal operation, max. pumpspeed

Communication errorVariable speed pump, mixingvalve circuit 1


*1 Read carefully. See bb below. *2 Read carefully. See b6 above.

5303271v1.5

Troubleshooting

61



Fault

code

display

Faultindicator(red)


c7 Flashes Normal operation, max. pumpspeed

Communication errorVariable speed pump, mixingvalve circuit 2


c9 Flashes Control Mode, normal operation Fault message input activeon Switching Module-V

Check fault message input

Ccd Flashes Communication error, Vitocom100

Check connections andVitocom 100:Set code “95:0”

ce Flashes Communication errorSwitching Module-V

Check connectionsand Switching Module-V

cf Flashes Communication errorViessmann two-wire BUSexpansion module

Check expansion module andconnecting cable

d1 Flashes Boiler is cooling down Burner fault Check burner

d4 Flashes Boiler is cooling down Fixed high limit is open or faultindication module notinserted correctly.

Check fixed high limit or faultindication module

dAa Flashes Normal operation withoutroom temperature feedback

Short circuitRoom temperature sensor,boiler circuit

Check room temperature sensor

db Flashes Normal operation withoutroom temperature feedback

Short circuitRoom temperature sensor,mixing valve circuit 1


dCc Flashes Controlled operation withoutroom temperature feedback

Short circuitRoom temperature sensor,mixing valve circuit 2


dd Flashes Normal operation withoutroom temperature feedback

Open circuitRoom temperature sensor,boiler circuit


de Flashes Normal operation withoutroom temperature feedback

Open circuitRoom temperature sensor,mixing valve circuit 1


df Flashes Normal operation withoutroom temperature feedback

Open circuitRoom temperature sensor,mixing valve circuit 2


e0to

ef

Flashes Normal operation Error at HV-BUS participant

f0to

ff

Flashes Normal operation Error at HV-BUS participant

5303271v1.5

Troubleshooting

62


Retrieving fault codes from error log (fault history)

All faults which have occurred are stored and can be scanned. The scanning

sequence starts with the most recently stored fault code.

1. Press and simultaneously forapprox. 2 seconds.

Scanning of fault history is activated.

Error history

1 18

.

.

.

Error history

10 d4

2. Access the individual fault codes bypressing the or button.

Sequence of

stored fault

codes

Fault code

1 Last (most recent)error code

.

.

....

10 10th last faultcode

3. Press .

All error messages can be reset to ”0”

by pressing .

Scanning of fault history is

terminated.

5303271v1.5

Boiler temperature

Error history

Boiler temperature

IMPORTANT

Additional Information

63

Codings

Accessing coding level 1

The most important codings can be set in plain language in coding level 1.


Access coding level 1.

Call up the required coding address withthe or button;press to confirm.

Change the value with the orbutton;press to confirm.

Address flashes.

Value flashes.

”Accepted” appears briefly in the

display, then the address flashes

again. Further addresses can now be

selected with the or button.

The following addresses can bechanged in coding level 1:

System typeBurner typeBoiler max. temp.DHW priority boiler circuitSummer energy saving mode, boilercircuit

DHW priority mixing valve circuitSummer energy saving mode, mixingvalve circuit

Min. supply temp. mixing valvecircuit 1

Max. supply temp. mixing valvecircuit 1

DHW priority mixing valve circuit 2Summer energy saving mode mixingvalve circuit 2

Min. supply temp. mixing valvecircuit 2

Max. supply temp. mixing valvecircuit 2

Press and simultaneously forapprox. 1 second.

The list shown on the left can vary

according to the system equipment

specifications.

Exit coding level 1.

5303271v1.5

Coding 1

System type

Coding 1

IMPORTANT


64

Codings (continued)

Coding 1

See ”Coding 2” for further coding information.

Function Coding (factory default setting)

Address: Value

Possible change

System type 00 : 11 heating circuit without mixing valve

00 : 2 1 heating circuit without mixing valve,with domestic hot water heating1 heating circuit without mixing valve

00 : 3 1 heating circuit with mixing valve

00 : 4 1 heating circuit with mixing valve anddomestic hot water heating

00 : 5 1 heating circuit without mixing valve and1 heating circuit with mixing valve

00 : 6 1 heating circuit without mixing valve and1 heating circuit with mixing valve anddomestic hot water heating

00 : 7 2 heating circuits with mixing valve

00 : 8 2 heating circuits with mixing valve anddomestic hot water heating

00 : 9 1 heating circuit without mixing valve and2 heating circuits with mixing valve

00 : 10 1 heating circuit without mixing valve and2 heating circuits with mixing valve anddomestic hot water heating

Burner type 02 : 0Single-stage

02 : 1 Two-stageBurner type 02 : 0Single-stage 02 : 2 Modulating

Max. boiler temp. 06 : 85Max. boiler water temperature limited to185 ºF / 85 ºC

06 : 20to06 : 130

Maximum boiler water temperature limitvariable between 68 ºF and 266 ºF /20 and 130 ºC

DHW priority (boiler circuit) A2 : 2Tank priority over heating circuit pump

A2 : 0 Without tank priority over heating circuitpumpTank priority over heating circuit pump

A2 : 1A2 : 3toA2 : 15

No function assigned

Summer energysaving function (boilercircuit)

A5 : 5With heating circuit pump logic function(HPL function)

A5 : 0 Without heating circuit pump logicfunction (HPL function)

DHW priority (mixing valvecircuit 1)

A2 : 2Tank priority over heating circuit pumpand mixing valve

A2 : 0 Without tank priority over heating circuitpump and mixing valvecircuit 1) Tank priority over heating circuit pump

and mixing valve A2 : 1 No function assigned

A2 : 3toA2 : 15


Summer energysaving function (mixingvalve circuit 1)


A5 : 0 Without heating circuit pump logic func-tion (HPL function)

Min. temp. (mixing valvecircuit 1)

C5 : 20Electronic minimum supply temperaturelimit 68 ºF / 20 ºC

C5 : 1toC5 127

Electronic minimum supply temperaturelimit variable between 34 ºF and 261 ºF /1 and 127 ºC

5303271v1.5


65

Codings (continued)

Coding 1 (continued)

Function Coding (factory default setting)

Address: Value

Possible change

Max. temp. (mixing valvecircuit 1)

C6 : 75Maximum supply temperature limited to167 ºF / 75 ºC

C6 : 10toC6 : 127

Maximum supply temperature limitvariable between 50 and 261 ºF /10 and 127 ºC

DHW priority A2 : 2Tank priority over heating circuit pumpand mixing valve

A2 : 0 Without tank priority over heating circuitpump and mixing valveTank priority over heating circuit pump

and mixing valve A2 : 1 No function assigned

A2 : 3toA2 : 15


Summer energysaving function


A5 : 0 Without heating circuit pump logicfunction (HPL function)

Min. temp. C5 : 20Electronic minimum supply temperaturelimit 68 ºF / 20 ºC

C5 : 1toC5 : 127

Electronic minimum supply temperaturelimit variable between 34 and 261 ºF /1 and 127 ºC

Max. temp. C6 : 75Maximum supply temperature limited to167 ºF / 75 ºC

C6 : 10toC6 : 127

Maximum supply temperature limitvariable between 50 and 261 ºF /10 and 127 ºC

5303271v1.5


66

Codings (continued)

Coding 2 Information

The following overview lists all possible coding addresses.

Only those coding addresses corresponding to the system type and equipment

specifications are shown and can be changed accordingly.

The coding addresses are structured asillustrated on the left.

In the case of system type 3 (boilercircuit and one mixing valve circuit), thepossible coding addresses ”A0” to ”FF”for the heating circuit without mixingvalve (boiler circuit) are scanned first,then those for the mixing valve circuit,starting again at coding address ”A0”.

In the case of system type 4 (mixingvalve circuit 1 and 2), the possiblecoding addresses ”A0” to ”FF” for themixing valve circuit 1 are scanned first,then those for the mixing valve circuit 2,starting again at coding address ”A0”.

In the case of system type 5 (boilercircuit and mixing valve circuits 1 and2), the possible coding addresses ”A0”to ”FF” for the heating circuit withoutmixing valve (boiler circuit) are scannedfirst, then those for the mixing valvecircuit 1, and then those for the mixingvalve circuit 2, in each case startingagain at coding address ”A0”.

5303271v1.5

System typeCod. 00

Boiler / BurnerCod. 01 to 54

Domestic hot waterCod. 55 to 75

GeneralCod. 76 to 9F

Boiler circuitCod. A0 to FF

Mixing valve circuit 1Cod. A0 to FF

Mixing valve circuit 2Cod. A0 to FF


67

Codings (continued)

Accessing coding level 2

All codings can be changed in coding level 2.

Press and simultaneously forapprox. 2 seconds;press to confirm.


Call up the required coding address withthe or button;press to confirm.

Change the value with the orbutton;press to confirm.

Coding address flashes.

”Accepted” appears briefly in the

display, then the address flashes

again. Further addresses can now be


Press and simultaneously forapprox. 1 second.

Exit coding level 2.

Resetting codings to factory default settings



Press .

Press to confirm ”Factory defaultsetting? Yes”.

Codings are reset to the factory

default settings.

The display changes and shows the

boiler water temperature.

”Factory default setting? Yes” or

”Factory default setting? No” can be


5303271v1.5

Coding 2

System type

Coding 2

Coding 2

factory default

setting? Yes

IMPORTANT


68

Codings (continued)

Coding 2

Coding

(factory default

setting)

Address: Value

Function New coding

Address:

Value

Possible change

00 : 1 Boiler System type 1 (boiler circuit) withoutdomestic hot water heating

00 : 12 System type 1 (boiler circuit)with domestic hot water heatingdomestic hot water heating

00 : 13 System type 2 (mixing valve circuit 1)without domestic hot water heating

00 : 14 System type 2 (mixing valve circuit 1)with domestic hot water heating

00 : 15 System type 3 (boiler circuit andmixing valve circuit 1)without domestic hot water heating

00 : 16 System type 3 (boiler circuit andmixing valve circuit 1)with domestic hot water heating

00 : 17 System type 4 (mixing valve circuits1 and 2) without domestic hot waterheating

00 : 18 System type 4(mixing valve circuits 1 and 2)with domestic hot water heating

00 : 19 System type 5 (boiler circuit, mixingvalve circuits 1 and 2)without domestic hot water heating

00 : 10 System type 5 (boiler circuit, mixingvalve circuits 1 and 2)with domestic hot water heating

02 : 0 Boiler/

burner

Operation with single-stage burner 02 : 1 Operation with two-stage burner02 : 0 Boiler/

burner

Operation with single-stage burner

02 : 2 Operation with modulating burner

03 : 0 Boiler/

burner

Gas-fired operation 03 : 1 Oil-fired operation

5303271v1.5


69

Codings (continued)


Coding

(factory default

setting)

Address: Value

Function New coding

Address:

Value

Possible change

04 : 0 Boiler/

burner

Switching hysteresis7.2 ºF / 4 ºC

Burner ON

OFF

Set-point

J

+2

–2

Lowheat demand

Mediumheat demand

Highheat demand

Time

04 : 1

04 : 2

Switching hysteresis heat demand-

controlled

ERB50 function

Values between 10.8 and 21.6 ºF /6 and 12 ºC are set, depending onthe heat demand.

orERB80 function

Values between 10.8 and 36 ºF /6 and 20 ºC are set, depending onthe heat demand.

The heat demand-controlledswitching hysteresis takes intoaccount the boiler load.The switching hysteresis, i.e. theburner operating time, is varied inrelation to the current heat demand.

Burner

J Set-J point

Lowheat demand

Mediumheat demand

Highheat demand

Time

ON

OFF

+9+3

–3

Burner

J Set-J point

+17

+3

–3

Time

Lowheat demand

Mediumheat demand

Highheat demand

ON

OFF

05 : 8 Boiler/

burner

Differential temperature 14.4 ºF /8 ºC (only adjustable with systemtypes 3 to 10)

05 : 0to05 : 40

Differential temperature variable from0 to 72 ºF / 0 to 40 ºC

06 : 85 Boiler/

burner

Max. limit of boiler water temperatureset to 185 ºF / 85 ºC

06 : 20to06 : 130

Max. limit of the boiler water tempera-ture variable between 68 and 266 ºF /20 and 130 ºC

10 : 20 Boiler/

burner

(two-

stage)

Switch-on delay (integral) = 2560 Cs(Celsius x seconds)

10 : 0to10 : 199

Switch-on delay for release of 2ndstage (to 1st stage) during the heatingmode variable; 1 increment = 128 CsRange: 0 to 25472 Cs

11 : 20 Boiler/

burner

(two-

stage)

Switch-on delay (integral) = 2560 Cs(Celsius x seconds)

11 : 0to11 : 199

Switch-on delay for release of 2ndstage (to 1st stage) during tank heat-ing variable; 1 increment = 128 CsRange: 0 to 25472 Cs

5303271v1.5


70

Codings (continued)


Coding

(factory default

setting)

Address: Value

Function New coding

Address:

Value

Possible change

12 : 20 Boiler/

burner

(two-

stage)

Switch-off delay (integral) = 2560 Cs(Celsius x seconds)

12 : 0to12 : 199

Switch-off delay for burner disable 1ststage (from 2nd stage) variable;1 increment = 128 CsRange: 0 to 25472 Cs

13 : 6 Boiler/

burner

Switch-off differential 10.8 ºF / 6 ºCThe burner is switched off when the

13 : 0 Without switch-off differential13 : 6 Boiler/

burner

(two-stage

/mod.)

Switch-off differential 10.8 ºF / 6 ºCThe burner is switched off when theboiler water temperature rises 10.8 ºF/ 6 ºC above the desired value

13 : 1to13 : 20

Switch-off differential adjustablebetween 1.8 and 36 ºF /1 and 20 ºC

15 : 15 Boiler/

burner

(two-stage

/mod.)

Operating time of actuator drive15 seconds

15 : 7to15 : 180

Operating time adjustable between7 and 180 seconds

16 : 6 (Mod.)

burner

Mod. burner offset 10.8 ºF / 6 ºC 16 : 0to16 : 15

Offset during optimized start-upadjustable from 0 and 27 ºF /0 to 15 ºC

17 : 12 (Mod.)

burner

Control gain 12 17 : 0to17 : 255

Setting according to matching ofmodulating burner to the boiler typeconcerned

18 : 300 (Mod.)

burner

Integral time 300 18 : 1to18 : 1000

Setting according to matching ofmodulating burner to the boiler typeconcerned

1A : 6 (Mod.)

burner

Optimized start-up 6 minutes 1A : 0to1A : 60

Duration of optimized start-upadjustable from 0 to 60 minutes

1F : 0 Boiler/

burner

No monitoring of flue gas temperature(only with flue gas temperaturesensor connected)

1F : 1to1F0 : 500

When the flue gas temp. exceedsthe preselected limit value (select-able between 36 to 932 ºF / 2 to500 ºC), ”SERVICE” is displayed

21 : 0 Boiler/

burner

No service display for burner 21 : 1to21 : 9999

The number of burner operatinghours before the ”Service” displayappears can be set between 1 and9999 hours

23 : 0 Boiler/

burner

No time interval for burnermaintenance

23 : 1to23 : 24

Time interval variable between 1and 24 months

24 : 0 Boiler/

burner

No ”Service” display 24 : 1 The ”Service” display appears(address is set automatically andmust be reset manually after main-tenance has been performed)

26 : 0 Boiler/

burner

Fuel consumption of burner(1st stage) not counted

26 : 1to26 : 9999

Input from 1 to 9999, wherebyeach increment = 0.1 liter orgallon/hourExample: 20 = 2.0 liters/gallonsper hour

28 : 0 Boiler/

burner

No burner cycling 28 : 1 Burner is automatically switched onfor 30 seconds after 5 hours

5303271v1.5


71

Codings (continued)


29 : 0 Boiler/

burner

Fuel consumption of burner(2nd stage) not counted

29 : 1to29 : 9999

Input from 1 to 9999, wherebyeach increment = 0.1 liter orgallon/hourExample: 20 = 2.0 liters/gallonsper hour

32 : 70 Boiler/

burner

Only in conjunction with SwitchingModule-V:Min. boiler water temperature setpointvalue 158 ºF / 70 ºC with externalburner activation

32 : 0to32 : 127

Minimum boiler water temp. set-point variable between 32 and261 ºF / 0 and 127 ºC; note adjust-ment of adjustable high limit ” ”.

33 : 0 Boiler/

burner

Only in conjunction with SwitchingModule-V:Pumps and mixing valve remain incontrol mode with external burneractivation

33 : 1 All pumps OFFMixing valve closed

55 : 0 DHW Tank heating, hysteresis +/- 4.5 ºF /2.5 ºC

55 : 1 Adaptive tank heating active(takes into account the rate atwhich the tank temperatureincreases during domestic hotwater heating)

55 : 0 DHW Tank heating, hysteresis +/- 4.5 ºF /2.5 ºC

55 : 2 2nd tank temperature sensorconnected

56 : 0 DHW Setting range of domestic hot watertemperature 50 to 140 ºF /10 to 60 ºC

56 : 1 Setting range of domestic hot watertemperature 50 to 203 ºF / 10 to95 ºC

Observe max. DHW temperature

Adjust adjustable high limit ” ”

IMPORTANT

58 : 0 DHW Without additional function fordomestic hot water heating

58 : 1to58 : 95

Input of a 2nd desired DHW tem-perature value; variable between34 and 140 ºF / 1 and 60 ºCwith coding ”56: 0”,

34 and 203 ºF / 1 and 95 ºCwith coding ”56: 1”.

The DHW tank is heated to the 2nd

setpoint value during the 4th activa-

tion period for DHW heating (for

settings see operating instructions).

IMPORTANT

5303271v1.5


72

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

59 : 0 DHW Tank heating:Switch-on point – 4.5 ºF / – 2.5 ºCSwitch-off point + 4.5 ºF / +2.5 ºC

59 : 1to59 : 10

Switch-on point variable between1.8 and 18 ºF / 1 and 10 ºC belowsetpoint value

60 : 20 DHW When domestic hot water is beingheated, the boiler water temperatureis a max. of 36 ºF / 20 ºC higher thanthe desired domestic hot watertemperature

60 : 10to60 : 50

Differential between boiler watertemperature and desired DHW tem-perature adjustable between 18 and90 ºF / 10 and 50 ºC

61 : 0 DHW Recirculation pump activationdependent upon boiler watertemperature

61 : 1 Recirculation pump switches onimmediately

62 : 10 DHW Circulation pump with max. run-ontime of 10 minutes

62 : 0 Circulation pump without run-ontimetime of 10 minutes

62 : 1to62 : 15

Run-on time variable from 1 to 15minutes

64 : 2 DHW During the party mode:Continuous domestic hot water heat-ing and DHW recirculation pump ON

64 : 0 During the party mode:No domestic hot water heating,DHW recirculation pump OFFing and DHW recirculation pump ON

64 : 1 During the party mode:Domestic hot water heating andDHW recirculation pump accordingto preset time program

66 : 4 DHW Input of DHW temperature setpoint onthe programming unit of the controlunit and on all installed Vitotrol 300remote controls

66 : 0 Input of DHW temperature setpointonly on the programming unit of thecontrol unitunit and on all installed Vitotrol 300

remote controls 66 : 1 Input of DHW temperature setpointon the programming unit of thecontrol unit and on the remote con-trol (boiler circuit)

66 : 2 Input of DHW temperature setpointon the programming unit of thecontrol unit and on the remote con-trol (mixing valve circuit 1)

66 : 3 Input of DHW temperature setpointon the programming unit of thecontrol unit and on the remote con-trol (mixing valve circuit 2)

66 : 5 Input of DHW temperature setpointonly on the remote control (boilercircuit)

66 : 6 Input of DHW temperature setpointonly on the remote control (mixingvalve circuit 1)

66 : 7 Input of DHW temperature setpointonly on the remote control (mixingvalve circuit 2)

5303271v1.5


73

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

67 : 40 DHW With Vitosolic:3rd set DHW temperature at 40 ºC/104 ºF. Re-heating will be suppressed

67 : 0 Without 3rd set DHW temperature

104 ºF. Re-heating will be suppressedabove the selected temperature. TheDHW tank is heated exclusively bythe solar heating system.

67 : 1to67 : 95

Input of a 3rd set DHWtemperature; adjustable from 1 to95 ºC/ 203 ºF

68 : 8 DHW Factor for switch-off point 0.8(effective with coding address ”55”)

68 : 2to68 : 10

Factor for switch-off point variablebetween 0.2 and 1.0

69 : 7 DHW Factor for switch-on point 0.7(effective with coding address ”55”)

69 : 1to69 : 9

Factor for switch-on point variablebetween 0.1 and 0.9

70 : 0 DHW DHW recirculation pump ON accordingto preset time program when DHWheating is released

70 : 1 DHW recirculation pump ONaccording to preset time program

71 : 0 DHW DHW recirculation pump ON with tankheating according to preset time pro-gram

71 : 1 DHW recirculation pump OFF duringdomestic hot water heating to the1st setpoint valuegram

71 : 2 DHW recirculation pump ON duringdomestic hot water heating to the1st setpoint value

72 : 0 DHW DHW recirculation pump ON with ac-tive additional function for domestichot water heating according to presettime program (see coding address”58”)

72 : 1 DHW recirculation pump OFF duringdomestic hot water heating to the2nd setpoint value(see coding address ”58”)time program (see coding address

”58”) 72 : 2 DHW recirculation pump ON duringdomestic hot water heating to the2nd setpoint value(see also coding address ”58”)

73 : 0 DHW DHW recirculation pump ON accordingto preset time program

73 : 1to73 : 6

During the time program for theDHW recirculation pumpON for 5 minutes once per hourtoON for 5 minutes 6 times per hour

73 : 7 DHW recirculation pump ONcontinuously

74 : 5 DHW In conjunction with SwitchingModule-V: The DHW recirculationpump can be switched on for 5 min-utes via potential-free contact

74 : 0to74 : 15

Switch-on time adjustable from 0 to15 minutes

5303271v1.5


74

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

75 : 0 DHW During energy saving mode:DHW recirculation pump ON accordingto preset time program

75 : 1 During energy saving mode:DHW recirculation pump OFF

7F : 1 General Single-family house 7F : 0 Multi-family house

80 : 1 General Fault messages are displayed with5 seconds time delay

80 : 0 Without time delay80 : 1 General Fault messages are displayed with5 seconds time delay 80 : 2

to80 : 199

Time delay adjustable between 2and 199 (selected value x 5 s)

81 : 1 General Automatic resetting to summer/wintertime

IMPORTANT

81 : 0 Manual resetting to summer/wintertime

Coding addresses ”82” to ”87” are

only possible if address ”81: 1” is

coded.

IMPORTANT

81 : 2 No function assigned

82 : 3 General Start of summer time: March 82 : 1to82 : 12

JanuarytoDecember

83 : 5 General Start of summer time: last weekof month

83 : 1to83 : 5

Week 1toWeek 5 of the selected month

84 : 7 General Start of summer time: last dayof week(Sunday)

84 : 1to84 : 7

MondaytoSunday

85 : 10 General Start of winter time: October 85 : 1to85 : 12

JanuarytoDecember

86 : 5 General Start of winter time: last weekof month

86 : 1to 86 : 5

Week 1to Week 5 of the selected month

87 : 7 General Start of winter time: last dayof week(Sunday)

87 : 1to87 : 7

MondaytoSunday

88 : 0 General ºC Temperature display 88 : 1 ºF Temperature display

89 : 1 General Automatic recognition of KM-BUSparticipant

89 : 0 No participant recognition

8A : 175 General Display conditions active 8A : 176 All codings visible

5303271v1.5


75

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

8E : 4 General Fault display and confirmation on theprogramming unit and on all installedVitotrol 300 remote controls

8E : 0 Fault display and confirmation onlyon the programming unit of thecontrol unitVitotrol 300 remote controls

8E : 1 Fault display and confirmation onthe programming unit of the controlunit and on the remote control(boiler circuit 1)

8E : 2 Fault display and confirmation onthe programming unit of the controlunit and on the remote control(mixing valve circuit 1)

8E : 3 Fault display and confirmation onthe programming unit of the controlunit and on the remote control(mixing valve circuit 2)

90 : 128 General Time constant for calculating the out-door temperature change 21.3 hours(selected value x 10 minutes)

90 : 1to90 : 199

Fast matching (lower values) or slowmatching (higher values) of thesupply temperature to the change inthe outdoor temperature (selectedvalue x 10 minutes)

91 : 7 General External switching of heatingprograms:

91 : 0 Without switching heating programs91 : 7 General External switching of heatingprograms:Switching effective for all heating cir-cuits (boiler and mixing valve circuits)(Connection via connector )

91 : 1Switching effective for:Heating circuit without mixing valve(boiler circuit)

(Connection via connector )91 : 2 Heating circuit with mixing valve

(mixing valve circuit 1)

91 : 3 Heating circuit without mixing valve(boiler circuit) and heating circuitwith mixing valve (mixing valvecircuit 1)

91 : 4 Heating circuit with mixing valve(mixing valve circuit 2)

91 : 5 Heating circuit without mixing valve(boiler circuit) and heating circuitwith mixing valve (mixing valvecircuit 2)

91 : 6 Heating circuits with mixing valve(mixing valve circuits 1 and 2)

92 : 1 General With fault indication module

93 : 0 General Emissions test mode/service displaynot effective for compiled faultindicator

93 : 1 Emissions test mode/servicedisplay effective for compiled faultindicator

94 : 0 General Without Switching Module-V 94 : 2 With Switching Module-V(recognized automatically)

95 : 0 General Without communication interfaceVitocom 100

95 : 1 With communication interfaceVitocom 100(recognized automatically)

5303271v1.5


76

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

98 : 0 General Without expansion moduleViessmann 2-wire-BUS

98 : 1 With expansion moduleViessmann 2-wire-BUS(recognized automatically)

9d : 0 General Without Input extension module0 to 10V

9d : 1 With Input extension module0 to 10V(recognized automatically)

A0 : 0 Boiler circuit/

mixing valve

Without remote control A0 : 1 With Vitotrol 200 remote controlmixing valve

circuitA0 : 2 With Vitotrol 300 remote control


mixing valve

circuit

With DHW tank priority control overheating circuit pump and mixingvalve

A2 : 0 Without DHW tank priority overheating circuit pump and mixingvalvecircuit valve

A2 : 1*1 Mixing valve closed, heating circuitpump ON while tank is being heated

A2 : 3*1

toA2 : 15

Reduced tank priority over mixingvalve; i.e. the heating circuit issupplied with a reduced amount ofheat


mixing valve

circuit

The heating circuit pump is switchedon at outdoor temperatures below34 ºF / 1 ºC.The heating circuit pump (boilercircuit) is switched off at outdoortemperatures above 37 ºF / 3 ºC.

At settings below 34 ºF / 1 ºC there

is a risk that piping outdoor the

insulation of the building may freeze,

e.g. pipes in the roof space, to the

garage, in radiator alcoves etc. Pay

particular attention to the stand-by

mode, e.g. during holiday periods.

IMPORTANT

A3 : –9A3 : –8A3 : –7A3 : –6A3 : –5A3 : –4A3 : –3A3 : –2A3 : –1A3 : –0A3 : –1A3 : –2.

.

.

A3 : 15

Heating circuit pumpON at OFF at14 ºF / –10 ºC 18 ºF / –8 ºC16 ºF / –19 ºC 19 ºF / –7 ºC18 ºF / –18 ºC 21 ºF / –6 ºC19 ºF / –17 ºC 23 ºF / –5 ºC21 ºF / –16 ºC 25 ºF / –4 ºC23 ºF / –15 ºC 27 ºF / –3 ºC25 ºF / –14 ºC 28 ºF / –2 ºC27 ºF / –13 ºC 30 ºF / –1 ºC28 ºF / –12 ºC 32 ºF / –0 ºC30 ºF / –11 ºC 34 ºF / –1 ºC32 ºF / –10 ºC 36 ºF / –2 ºC34 ºF / –11 ºC 37 ºF / –3 ºC.

.

.

57ºF / 14 ºC 61 ºF / 16 ºC

5303271v1.5


77

Codings (continued)



mixing valve

circuit

With frost protection A4 : 1 No frost protection, setting onlypossible when coding ”A3 : –9” isset


mixing valve

circuit

With the heating circuit pump logicfunction (HPL function), the heatingcircuit pump is switched off whenthe outdoor temperature (OT) rises1.8 ºF / 1 ºC above the desired roomtemperature (RTdes).OT > RTdes + 1.8 ºF / + 1 ºC

A5 : 0

A5 : 1A5 : 2A5 : 3A5 : 4A5 : 5A5 : 6A5 : 7.

.

.

A5 : 15

Without heating circuit pump logicfunction (HPL function). Theheating circuit pump is switchedoff ifOT > RTdes + 9 ºF / + 5 ºCOT > RTdes + 7.2 ºF / + 4 ºCOT > RTdes + 5.4 ºF / + 3 ºCOT > RTdes + 3.6 ºF / + 2 ºCOT > RTdes + 1.8 ºF / + 1 ºCOT = RTdesOT > RTdes – 1.8 ºF / – 1 ºC.

.

.

OT > RTdes – 16.2 ºF / – 9 ºC


mixing valve

circuit

Automatic switching from normalheating to summer operation not

active

A6 : 5toA6 : 35

Automatic switching from normalheating to summer operation*1 at avariable setting value from 41 to95 ºF / 5 to 35 ºC plus 1.8 ºF /1 ºC at which the burner and heat-ing circuit pump are switched offand the mixing valve is closed

A7 : 0 Mixing valve

circuit

Without mixing valve energy savingfunction

A7 : 1 With mixing valve energy savingfunction (extended heating circuitpump logic)The heating circuit pump can beswitched off additionally when themixing valve has been closed forlonger than 12 minutes.The heating circuit pump isswitched on againwhen the mixing valve switchesto the control mode

after the tank has been heated(for 20 minutes)

when there is a risk of freezing


mixing valve

circuit

Without pump off time A9 : 1toA9 : 15

With pump off time:Heating circuit pump logic functionwith change of setpoint (throughchanging the operating mode orchanges on the ” „? ” selectorknob or ” „?” button).

*1Only selectable for the heating circuit with mixing valve

5303271v1.5


78

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

b0 : 0*2 Boiler circuit/

mixing valve

circuit

In conjunction with remote control:Weather-responsive operation only innormal heating mode and in reducedheating mode

b0 : 1 Weather-responsive operation innormal heating mode and with roomtemperature dependent control inreduced heating modeheating mode

b0 : 2 Room temperature dependentcontrol in normal heating mode andweather-responsiveoperation in reduced heating mode

b0 : 3 Room temperature dependentcontrol in normal heating mode andin reduced heating mode


mixing valve

circuit

In conjunction with remote control:Without pure room temperaturecontrol

b1 : 1 Heating circuit with roomtemperature dependent control


mixing valve

In conjunction with remote control:Room influence factor: 8

b2 : 0 Without room temperature inputmixing valve

circuit

Room influence factor: 8Operation with room temperaturecontrol (feedback) must be coded forthis heating circuit.

b2 : 1tob2 : 31

Room influence factor adjustablefrom 1 to 31


mixing valve

circuit

In conjunction with remote control:Basic value: 127 ºF / 53 ºCOperation with room temperaturecontrol must be coded for theheating circuit.

b3 : 1 Basic value: 100 ºF / 8 ºC


mixing valve

circuit

In conjunction with remote control:No room temperature controlled heat-ing circuit pump logic function

b5 : 1 Heating circuit pump OFF ifactual room temperature (RTact)is 1.8 ºF / 1 ºC higher than de-sired room temperature (RTdes)RTact > RTdes + 1.8 ºF / 1 ºC

Heating circuit pump ON if actualroom temperature (RTact) is1.8 ºF / 1 ºC lower than desiredroom temperature (RTdes)RTact < RTdes + 1.8 ºF / 1 ºC

*1 Based on the damped outdoor temperature which is calculated from the current outdoor temperature and a time constant which takes into account the

cooling characteristics of an average building.*2 Coding changes for boiler circuit only on boilers without low limit or for the heating circuit with mixing valve if the remote

control is effective for this heating circuit.

5303271v1.5


79

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change


mixing valve

circuit

In conjunction with remote controlwith room temperature controlWithout boost heating/rapid setback

b6 : 1 With boost heating/rapid setback

Rapid setback:Only possible withweather-responsive operation withthe room temperature sensor orwith room temperature dependentcontrol.The desired room temperature valuemust be reduced by at least 3.6 ºF /2 ºC bypressing the energy savingbutton ”S”

switching over from normal toreduced operation

optimized switch-off.Rapid setback ceases when thedesired room temperature isreached.

Boost heating:Only possible withweather-responsive operation withthe room temperature sensor orwith room temperature dependentcontrol.The desired room temperature valuemust be increased by at least3.6 ºF / 2 ºC bypressing the party buttonswitching over from reduced tonormal operation

optimized switch-on.Boost heating ceases when the de-sired room temperature is reached.

*1Coding changes for the boiler circuit only on boilers without low limit or for the heating circuit with mixing valve if the remote control

is effective for this heating circuit.

5303271v1.5


80

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

b7 : 0*1 Boiler circuit/mixing valvecircuit

In conjunction with remote control inroom sensing modeWithout optimized switch-on time

b7 : 1

b7 : 2

With optimized switch-on time(max. time shift 2 hours 30minutes)

With optimized switch-on time(max. time shift 15 hours 50minutes)


Heat-up gradient:Optimized switch-on time10 minutes/Celsius

b8 : 11tob8 : 255

Heat-up gradient for optimizedswitch-on time variable between11 and 255 minutes/Celsius


Without learning optimized switch-ontime

b9 : 1 With learning optimized switch-ontime

C0 : 0*1 Boiler circuit/mixing valvecircuit

In conjunction with remote control:Without optimized switch-off time C0 : 1

In conjunction with remote control:With optimized switch-off time(max. time shift 1 hour)circuit

C0 : 2In conjunction with remote control:With optimized switch-off time(max. time shift 2 hours)


In conjunction with remote control:Without optimized switch-off time

C1 : 1toC1 : 12

In conjunction with remotecontrol:With optimized switch-off time(max. time shift from 10 to 120minutes)


Without learning optimized switch-offtime

C2 : 1 With learning optimized switch-offtime

C4 : 1 Mixing valvecircuit

System dynamics - mixing valvecontrol characteristics

C4 : 0toC4 : 3

Controller responds too quickly(cycles between “open” and“closed”):Select a lower valueController responds too slowly(temperature is not heldsufficiently):Select a higher value

C5 : 20 Boiler circuit/

mixing valve

circuit

Electronic minimum supplytemperature limit 68 ºF / 20 ºC

C5 : 1toC5 : 127

Electronic minimum supplytemperature limit variable between34 and 261 ºF / 1 and 127 ºC

C6 : 75 Mixing valve

circuit

Maximum supply temperature limitset to 167 ºF / 75 ºC

C6 : 10toC6 : 127

Max. supply temperature limitvariable between 50 and 261ºF /10 and 127 ºC

C7 : 0 Mixing valve

circuit

In conjunction with return watertemperature sensor:Without influence of return watertemperature sensor

C7 : 1toC7 : 31

Spread variable from 1.8 to 68 ºF /1 to 31 ºCSpread = temperature differencebetween supply and return at sys-tem point - 50 ºF / - 10 ºC

C8 : 31 Boiler circuit/mixing valvecircuit

In conjunction with remote control:Without limit on room temperatureinput

C8 : 1toC8 : 30

Limit on room influence variablefrom 1.8 to 54 ºF / 1 to 30 ºC

*1Coding changes for the boiler circuit only on boilers without low limit or for the heating circuit with mixing valve if the remote

control is effective for this heating circuit.

5303271v1.5


81

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

C9 : 0 Mixing valve

circuit

Underfloor heating systemcontrolled by supply temperaturesensor and mixing valve

C9 : 1 Optimized control of underfloorheating system with supply andreturn water temperature sensor(effective with coding address”C7”)

d3 : 14 Boiler circuit/

mixing valve

circuit

Do not adjust

d4 : 0

mixing valve

circuit

E1 : 1 Boiler circuit/

mixing valve

circuit

In conjunction with remote control:Day setpoint value variable from50 to 86 ºF / 10 to 30 ºC

E1 : 0 Day setpoint value variable from37 to 73 ºF / 3 to 23 ºCmixing valve

circuit

Day setpoint value variable from50 to 86 ºF / 10 to 30 ºC E1 : 2 Day setpoint value variable from

63 to 99 ºF / 17 to 37 ºC


mixing valve

circuit

In conjunction with remote control:No display correction for currentroom temperature value

E2 : 0toE2 : 49

Display correction – 9 ºF / – 5 ºCtoDisplay correction – 0.18 ºF /

– 0.1 ºC

E2 : 51toE2 : 99

Display correction + 0.18 ºF/ ++ 0.1 ºC

toDisplay correction + 8.8 ºF /

+ 4.9 ºC


mixing valve

circuit

Without variable speedheating circuit pump

E5 : 1 With variable speed heating circuitpump (recognized automatically)


mixing valve

circuit

Maximum speed of variable speedpump 100 % of max. speed in normaloperation

E6 : 0toE6 : 100

Maximum speed variable between0 and 99 % of max. speed


mixing valve

circuit

Minimum speed of variable speedpump 20 % of max. speed

E7 : 0toE7 : 100

Minimum speed variable between0 and 100 % of max. speed


mixing valve

circuit

Minimum speed according to settingin coding address ”E7”

E8 : 1 Speed according to setting incoding address ”E9”


mixing valve

circuit

Speed of variable speed pump 20 %of max. speed in reduced operation

E9 : 0toE9 : 100

Speed variable between 0 and100 % of max. speed

F0 : 0 Without function, do not change

5303271v1.5


82

Codings (continued)


Coding factorydefault setting)Address: Value

Function New codingAddress:Value

Possible change

F1 : 0 Mixing valvecircuit

Slab curing function not active

F1 : 1

F1 : 2

F1 : 3

F1 : 4

The service report to be completedby the heating contractor must con-tain the following data:Heating data for the corresponding

supply temperaturesMax. supply temperature reachedOperating status and outdoor tem-

perature after completion ofinstallation

Slab curing function selectable onbasis of four temperature/timecurves:Temperature/time curve 1:

Temperature/time curve 2:



The function is resumed after apower outage or after the controlunit is switched off.When the slab curing function hasterminated or the address is resetmanually to 0, the ” ” heatingprogram is switched on.

Supplytemperature

Supplytemperature

Supplytemperature

Supplytemperature

Days

Days

Days

Days

122

104

86

68

50

122

104

86

68

50

122

104

86

68

50

122

104

86

68

50

ºF / ºC

ºF / ºC

ºF / ºC

ºF / ºC5303271v1.5


83

Codings (continued)


Coding (factory

default setting)

Address: Value

Function New coding

Address:

Value

Possible change

F2 : 0 Boiler circuit/mixing valvecircuit

No time limit for party mode F2 : 1toF2 : 12

Time limit for party mode variablebetween one and twelve hours

F8 : -5 Boiler circuit/mixing valvecircuit

Below an outdoor temperature of-5 ºC/ 23 ºF, the set roomtemperature in operation withreduced room temperature is raisedto a temperature which is subject tothe outdoor temperature (up to thetemperature limit in accordance with

F8: +10toF8: -60

Temperature limit for raising thetemperature in reduced mode,adjustable from +10 to -60 ºC/+50 to -76 ºF

temperature limit in accordance withcoding address “F9”).Observe the setting of codingaddress “A3”.

F8: -61 Function disabled

F9 :-14 Boiler circuit/mixing valvecircuit

Below an outdoor temperature of-14 ºC/ 7 ºF the set roomtemperature will be raised to thevalue selected as set roomtemperature, if the system is instandard room temperature mode.

F9 : +10toF9 : -60

Temperature limit for raising theset room temperature to the valueselected for standard modeadjustable from +10 to -60 ºC/+50 to -76 ºF

FA : 20 Boiler circuit/mixing valvecircuit

Raising the set supply temperaturefor the transition from reducedtemperature mode to standard roomtemperature mode by about 20%

FA : 0toF9 : 50

Raising the set supply temperaturefor the transition from reducedroom temperature mode tostandard room temperature mode,adjustable from 0 to 50%

Fb : 30 Boiler circuit/mixing valvecircuit

Duration for raising the set supplytemperature (see coding address“FA”): 60 min

Fb : 0toFb : 150

Duration for raising the set supplytemperature, adjustable from 0 to300 min; 1 step = 2 min.

5303271v1.5

Additio

nalInformation

84

Wirin

gD

iagra

m

5303 271 v1.5

Selector buttons Programming unit

Mother board

Electronics board

Expansionmodule

BoilercodingcardPower

supplyunit

ON ON

Boiler circuit


85

Wiring Diagram (continued)

Legend

A1 Mother boardA2 Power supply boardA3 Electronics boardA4 Heating circuit selector button boardA5 Programming unitA6 Boiler coding cardA7 Fault indication module (accessory)A11 Optolink/emissions test switch boardA12 Expansion module Viessmann 2-wire-BUS (accessory)F1, F2 FusesF6 Fixed high limit ” ” 230 ºF / 110 ºC (212 ºF / 100 ºC)F7 Adjustable high limit ” ” 167 ºF / 75 ºC (203 ºF / 95 ºC,

212 ºF / 100ºC, 230 ºF / 110 ºC)K1-K5 RelaysS1 Heating system on/off switch ” ”S2 FHL test switchS3 Emissions test switch ” ”V1 Fault indicator (red)V2 Operating status indicator (green)

120 VAC connectors

Interconnections Power Pump Control ModulePower supply connection, 60 HzOil / Gas burner connectionCentral fault indicatorExternal equipment:

External safety devices(remove jumper when connecting)External control switch-off(remove jumper when connecting)External burner activation (1st stage)

Power supply connection for accessories, 60 Hz

Low voltage connectors

Outdoor temperature sensorBoiler temperature sensorDHW tank temperature sensor(only connected if DHW tank installed)Flue gas temperature sensor (accessory)Telephone connectionKM-BUS participant, e.g. Vitotrol remote control2nd stage burner / burner modulation

Type / Model Timeconstant

Adjustable high limit RAK 51.1/3382, Etheco or TR 97.55180.251, EGO tt 45 sec

Fixed high limit RAK 75.4/3412, Etheco or STW 56.10525.400, EGO tt 45 sec

The wiring diagram on the previous page applies only when Viessmann products are used.

5303271v1.5


86

Parts List

VVVVIIIITTTTOOOOTTTTRRRROOOONNNNIIIICCCC 333300000000

KW3 SeriesSerial No. 7187091

Ordering Replacement Parts:

Please provide Model and Serial Numberfrom rating plate A when orderingreplacement parts. Order replacementcomponents from your Viessmanndistributor.

Parts

001 Cable clip004 Adjustable high limit dial ” ”005 Cover for fixed high limit ” ”010 Front flip-down cover011 Control panel, bottom right013 Housing, top (drawer)014 Circuit board cover assembly015 Flip-down cover of programming unit016 Housing, bottom017 Control housing, rear018 Programming unit019 Front cover for heating circuit

selector buttons020 Flat cable, 14-pole023 Fuse holder024 Fuse holder cover030 Fixed high limit ” ”031 Adjustable high limit ” ”033 Adjustable high limit rotary knob ” ”035 Switch, 1-pole (FHL test switch)036 Switch, 2-pole (ON/OFF switch ” ”)040 Outdoor temperature sensor042 Boiler temperature sensor with

plug-in connector043 DHW tank temperature sensor with

plug-in connector050 Circuit board control (software)051 Optolink circuit board052 Motherboard053 Fault indication module (accessory)054 Power supply circuit board056 Viessmann 2-wire BUS

Expansion Module (accessory)065 Control cable074 Connecting cable090 Fuse T 4 A / 250 VAC091 Fuse T 6.3 A / 250 VAC092 Fuse holder098 Pack of strain relief clamp parts

Other Parts (not illustrated)099 Pack of mounting screws120 Power/Pump Module121 Installation Instructions122 Service Instructions123 Operating Instructions124 Parts ListA Rating plate 5303271v1.5


87

Parts List (continued)

5303271v1.5

074018

015

013 042

043

065

040

074

014

017

098

016

005

035

024091

023

004

033

036011 030 031

051

053

050 054

052

092

090

020019

010

001

056

Viessmann Manufacturing Company Inc.750 McMurray RoadWaterloo, Ontario • N2V 2G5 • Canada1-800-387-7373 • Fax (519) 885-0887www.viessmann.ca • [email protected]

Viessmann Manufacturing Company (U.S.) Inc.45 Access RoadWarwick, Rhode Island • 02886 • USA1-800-288-0667 • Fax (401) 732-0590www.viessmann-us.com • [email protected]

88

Quick Reference

°C °F

-40 -40-35 -31-25 -13-20 -4-18 0-16 +3-14 +7-12 +10-10 +14-9 +16-8 +18-7 +19-6 +21-5 +23-4 +25-3 +27-2 +28-1 +300 +32

+1 +34+2 +36+3 +37+4 +39+5 +41+6 +43+7 +45+8 +46+9 +48+10 +50+12 +54+14 +57+16 +61+18 +64+20 +68+25 +77+30 +86+35 +95+40 +104+50 +122+60 +140+70 +158+80 +176+90 +194+100 +212+110 +230

Technicalinformationsubjectto

changewithoutnotice.

Printedonenvironmentally

friendly

(recycledandrecyclable)paper.

5303271v1.5

5303 271 v1 - viessmann-us.com · generalinformation 7 application example 1 (continued) system...

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