instructions VIESMANN Type B2HA, B2KA - Viessmann · If the boiler is operated at the same time, this can lead to reverse flow of the flue gas. Danger The simultaneous operation of

Installation and serviceinstructionsfor contractors

VIESMANN

Vitodens 200-WType B2HA, B2KA, 3.2 to 35 kWGas council no.■ System boilers:

41-819-32; 41-819-33; 41-819-34; 41-819-35■ Combi boilers:

47-819-28; 47-819-29; 47-819-30

For applicability, see the last page

VITODENS 200-W

5772 909 GB 11/2012 Please keep safe.

2

Please follow these safety instructions closely to prevent accidents and mate-rial losses.

Safety instructions explained

DangerThis symbol warns against therisk of injury.

! Please noteThis symbol warns against therisk of material losses and envi-ronmental pollution.

NoteDetails identified by the word "Note" con-tain additional information.

Target group

These instructions are exclusively inten-ded for qualified contractors.■ Work on gas installations must only be

carried out by a registered gas fitter.■ Work on electrical equipment must

only be carried out by a qualified elec-trician.

■ The system must be commissioned bythe system installer or a qualified per-son authorised by the installer.

Regulations

Observe the following when working onthis system: ■ Statutory regulations regarding the

prevention of accidents■ Statutory regulations regarding envi-

ronmental protection■ Codes of practice of the relevant trade

associations

■ All current safety regulations asdefined by DIN, EN, DVGW, TRGI,TRF, VDE and all locally applicablestandards

■ Gas Safety (Installation & Use) Regu-lations– the appropriate Building Regulationeither the Building regulations, theBuilding Regulation (Scotland), Build-ing Regulations (Northern Ireland),– the Water Fittings Regulation orWater Bylaws in Scotland,– the current I.E.E. Wiring Regula-tions.

If you smell gas

DangerEscaping gas can lead to explo-sions which may result in seriousinjury.■ Do not smoke. Prevent naked

flames and sparks. Do notswitch lights or electrical appli-ances on or off.

■ Close the gas shut-off valve.■ Open windows and doors.■ Evacuate any people from the

danger zone.■ Notify your gas or electricity

supply utility from outside thebuilding.

■ Shut off the electricity supply tothe building from a safe place(outside the building).

Safety instructions

Safety instructions

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If you smell flue gas

DangerFlue gas can lead to life-threat-ening poisoning.■ Shut down the heating system.■ Ventilate the installation site.■ Close all doors in the living

space.

Flue systems and combustion air

Ensure that flue systems are clear andcannot be sealed, for instance due toaccumulation of condensate or othercauses. Ensure a sufficient supply ofcombustion air.Instruct system users that subsequentmodifications to the building characteris-tics are not permissible (e.g. cable/pipe-work routing, cladding or partitions).

DangerLife-threatening poisoningcaused by carbon monoxide inthe flue gas occurs as a result ofleaking or blocked flue systemsor an insufficient supply of com-bustion air.Ensure the flue system is inproper working order. It must notbe possible to close apertures forinterconnected combustion airsupply.

Extractors

Operating appliances that extract air tothe outside (cooker hoods, extractors, airconditioning units, etc.) can create neg-ative pressure. If the boiler is operated atthe same time, this can lead to reverseflow of the flue gas.

DangerThe simultaneous operation ofthe boiler and appliances thatextract air to the outside canresult in life threatening poison-ing due to reverse flow of the fluegas.Fit an interlock circuit or take suit-able steps to ensure a sufficientsupply of combustion air.

Working on the system

■ Where gas is used as the fuel, closethe main gas shut-off valve and safe-guard it against unintentional reopen-ing.

■ Isolate the system from the power sup-ply (e.g. by removing the separate fuseor by means of a mains isolator) andcheck that it is no longer 'live'.

■ Safeguard the system against recon-nection.

! Please noteElectronic assemblies can bedamaged by electrostatic dis-charge.Prior to commencing any work,touch earthed objects, such asheating or water pipes to dis-charge static loads.

Repair work

! Please noteRepairing components that fulfil asafety function can compromisethe safe operation of your sys-tem.Defective components must bereplaced with genuineViessmann spare parts.

Safety instructions

Safety instructions (cont.)

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Auxiliary components, spare andwearing parts

! Please noteSpare and wearing parts thathave not been tested togetherwith the system can compromiseits function. Installing non-author-ised components and makingnon-approved modifications orconversions can compromisesafety and may invalidate ourwarranty.For replacements, use only orig-inal spare parts supplied orapproved by Viessmann.

Safety instructions

Safety instructions (cont.)

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5

Installation instructionsPreparing for installationIntended use......................................................................................................... 7Product information.............................................................................................. 7Preparing for installation....................................................................................... 8

Installation sequenceFitting the boiler and making connections............................................................ 11Flue gas connection............................................................................................. 12Condensate connection........................................................................................ 13Gas connection.................................................................................................... 14Opening the control unit casing............................................................................ 15Electrical connections........................................................................................... 16Closing the control unit casing and inserting the programming unit..................... 25Fitting the front panel............................................................................................ 26

Service instructionsCommissioning, inspection, maintenanceSteps - commissioning, inspection and maintenance.......................................... 27Further details regarding the individual steps....................................................... 29

Code 1Calling up coding level 1...................................................................................... 60"General"/group 1................................................................................................. 61"Boiler"/group 2.................................................................................................... 64"DHW"/group 3..................................................................................................... 64"Solar"/group 4..................................................................................................... 65"Heating circuit ..."/group 5................................................................................... 67

Code 2Calling up coding level 2...................................................................................... 73"General"/group 1................................................................................................. 74"Boiler"/group 2.................................................................................................... 82"DHW"/group 3..................................................................................................... 84"Solar"/group 4..................................................................................................... 86"Heating circuit ..."/group 5................................................................................... 91

Diagnosis and service scansService level......................................................................................................... 100Diagnosis.............................................................................................................. 101Checking outputs (actuator test).......................................................................... 107

Index

Index57

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TroubleshootingFault display......................................................................................................... 110Fault codes........................................................................................................... 112Repairs................................................................................................................. 129

Function descriptionConstant temperature control unit........................................................................ 139Weather-compensated control unit...................................................................... 140Internal extensions (accessories)......................................................................... 142External extensions (accessories)........................................................................ 144Control functions.................................................................................................. 148Allocating heating circuits to the remote control................................................... 156Electronic combustion control unit........................................................................ 156

DesignsConnection and wiring diagram – Internal connections ...................................... 158Connection and wiring diagram – External connections...................................... 160

Parts listsOrdering individual parts...................................................................................... 162Overview of the assemblies................................................................................. 163Casing.................................................................................................................. 164Heat cell............................................................................................................... 165Burner................................................................................................................... 168Hydraulics type B2HA.......................................................................................... 169Hydraulics type B2KA........................................................................................... 172Control unit........................................................................................................... 176Miscellaneous....................................................................................................... 177

Commissioning/service reports........................................................................ 179

Specification....................................................................................................... 180

CertificatesDeclaration of conformity...................................................................................... 182Manufacturer's certificate according to the 1st BImSchV [Germany]................... 182

Keyword index.................................................................................................... 183

Index

Index (cont.)

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The appliance is only intended to beinstalled and operated in sealed unven-ted heating systems that comply withEN 12828, with due attention paid to theassociated installation, service andoperating instructions. It is only designedfor the heating of water that is of potablewater quality.

Intended usage presupposes that a fixedinstallation in conjunction with permissi-ble, system-specific components hasbeen carried out.

Commercial or industrial usage for a pur-pose other than heating the building orDHW does not comply with regulations.

Any usage beyond this must beapproved by the manufacturer for theindividual case.

Incorrect usage or operation of the appli-ance (e.g. the appliance being openedby the system user) is prohibited andresults in an exclusion of liability. Incor-rect usage also occurs if the componentsin the heating system are modified fromtheir intended function (e.g. if the fluegas and ventilation air paths aresealed).

Product information

Vitodens 200-W, type B2HA, B2KA

Set up for operation with natural gas E.For conversion to LPG P (without con-version kit), see "Commissioning,inspection, maintenance".

In principle the Vitodens 200-W may onlybe delivered to countries listed on thetype plate. For deliveries to alternativecountries, an approved contractor mustarrange individual approval on his owninitiative and in accordance with the lawof the country in question.

Preparing for installation

Intended use57

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! Please noteTo prevent equipment damage,

connect all pipework free of loadand torque stress.

360450

730

1925H85

0

100 215

50

a

A B C D EF K

G

A Heating flow Rp¾B DHW Rp½ (combi boilers)

Cylinder flow G¾ (system boiler)C Gas connectionD Cold water Rp½ (combi boilers)

Cylinder return G¾ (system boiler)

E Heating return Rp¾F Filling/drainingG Wiring areaH Min. clearances below the boilerK Condensate drain



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Rated heating outputkW

Dim. amm

3.2 - 19.0 1366.5 - 26.0 1588.8 - 35.0 158

NoteThis boiler (IP rating: IP X4D) isapproved for installation in wet roomsinside safety zone 1 in accordance withIEEE Wiring Regulations, providing theoccurrence of hosed water can be ruledout.Observe the IEEE Wiring Regulations.

1. Fit the supplied pre-plumbing jig ormounting frame at the installationlocation.

Pre-plumbing jig or mountingframe installation instruc-tions.

2. Prepare the connections on the waterside to the valves on the pre-plumb-ing jig or mounting frame. Thoroughly flush the heating sys-tem.

3. Prepare the gas connection accord-ing to TRGI or TRF [or local regula-tions].

4. Prepare the electrical connections.■ Power cable: NYM-J 3 x 1.5 mm2,

fuse max. 16 A, 230 V, 50 Hz.■ Accessory cables: NYM with the

required number of conductors forthe external connections.

■ All cables should protrude1200 mm from the wall near "G".

Cold water installation

A Cold water connection, boilerB DrainC Visible discharge pipe outlet pointD Safety valveE Non-return valve

F Shut-off valveG Cold waterH Safety assembly

Safety assembly H must be installed asper the Water Regulation Guide if themains water supply pressure exceeds10 bar, and no DHW pressure reducingvalve is installed.Only use a non-return valve or a com-bined shut-off and non-return valve inconjunction with a safety valve.If the safety valve is used, the cold watershut-off valve on the boiler must not beshut off.


Preparing for installation (cont.)

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Remove the toggle on the cold watershut-off valve (if installed) to preventanyone shutting it off manually.

Shock arrestor

If draw-off points that could cause pres-sure peaks (water hammer/shock) areconnected to the same pipework as theboiler (such as pressure washers, wash-ing machines or dishwashers), we wouldrecommend the installation of a shockarrestor near the source of such pres-sure shocks.g: Fit a small domestic expansion ves-sel if water hammer occurs.


Preparing for installation (cont.)

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2x

6.

7.

5.

3.

2x

2.

1.

4.

Installation sequence

Fitting the boiler and making connections57

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Fitting the connections

A B C D EF

A Heating flow B DHW (combi boilers)

Cylinder flow (system boiler)

C Gas connectionD Cold water (combi boilers)

Cylinder return (system boiler)E Heating returnF Filling/draining

Flue gas connection

Note■ The labels "System certificate" and

"Skoberne GmbH flue system"enclosed with the technical documen-tation may only be used in conjunctionwith the Viessmann flue system madeby Skoberne.

■ During installation and positioning ofthe flue system, observe Part J andBS 5440 building regulations.

Connecting the balanced flueFlue system installation instruc-tions.

Do not carry out commissioning untilthe following conditions are met:■ Free passage through the flue gas

pipes.■ Flue system with positive pressure is

gas-tight.

■ Apertures for ensuring sufficient com-bustion air supply are open and cannotbe closed off.

■ Applicable regulations on installingand commissioning flue systems havebeen followed.

DangerLeaking or blocked flue systemsor an insufficient supply of com-bustion air cause life threateningpoisoning due to carbon monox-ide in the flue gas.Ensure the flue system functionscorrectly. Apertures for combus-tion air supply must not be able tobe closed off.


Fitting the boiler and making connections (cont.)

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1. Pull the condensate hose far enoughout of the boiler that no unnecessarybends are created inside the boiler.Check the tightness of the siphonconnection.

2. ■ The condensate pipe is connectedwith the discharge pipe of thesafety valve. The condensate hosesupplied meets the temperaturerequirements that are part of theCE certification.

■ We recommend the internal con-nection of the condensate pipe tothe domestic drain, either directlyor via a tundish.

■ If the condensate pipe is routedoutside the building, use a pipe with7 30 mm at least, and protect thispipe from frost. Avoid long externalpipelines.

! Please noteFrozen condensate pipescan result in faults and dam-age to the boiler.Always insulate conden-sate pipes against frost.

■ Observe local building regulations.Connect condensate pipe A to thepublic sewage system with a con-stant fall and a pipe vent.Observe the local waste water regu-lations.

NoteFill the siphon with water before com-missioning.


Condensate connection57

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A

1. Seal gas shut-off valve A into thegas supply pipe.

2. Carry out a tightness test.

NoteOnly use suitable and approved leakdetection agents (EN 14291) anddevices for the tightness test. Leakdetection agents with unsuitable con-stituents (e.g. nitrites, sulphides) cancause material damage.Remove residues of the leak detec-tion agent after testing.

! Please noteExcessive test pressure maydamage the boiler and the gasvalve. Max. test pressure 150 mbar.Where higher pressure isrequired for tightness tests,disconnect the boiler and thegas valves from the gas sup-ply pipe (undo the fitting).

3. Vent the gas line.

Conversion to other gas types:Service instructions (details forconverting to LPG are on page35)


Gas connection

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! Please noteElectronic assemblies can bedamaged by electrostatic dis-charge.

Before beginning work, touchearthed objects, such as heatingor water pipes, to discharge staticloads.

2x

4x4.

3.

5.

2.

1.


Opening the control unit casing57

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16

LN

230V

~23

0V~

596

40 4096

2035

100

1LN

21

145

21

321

54

2814

5

A

A Jumper


Electrical connections

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Connections at plug 230 V~fÖ Power supplylH ■ Power supply for accessories

■ External demand/blocking■ Room temperature control unit

(remove jumper A when con-necting):– Vitotrol 100, UTA– Vitotrol 100, UTDB– Vitotrol 100, UTDB-RF

Connections at LV plugX3 Plug X3 can be removed to facili-

tate installation.! Outside temperature sensor? Flow temperature sensor for

low loss header (accessories)X4 KM BUS connection, heating cir-

cuit pump% Type B2HA:

Cylinder temperature sensor (partof the DHW cylinder connectionset)Type B2KA:Comfort sensor (connected at thefactory)

aVG KM BUS subscriber (accessories)To connect several accessories,see page 22.■ Vitotrol 200A or 300A remote

control■ Vitocom 100, type GSM■ Extension kit for one heating cir-

cuit with mixer■ Solar control module, type SM1■ Vitosolic■ Extension AM1■ Extension EA1■ Wireless base station■ KM BUS distributor

Information on connectingaccessoriesWhen connecting accessoriesobserve the separate installationinstructions provided with them.


Electrical connections (cont.)

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Outside temperature sensor !

For fitting the wireless outside tempera-ture sensor (wireless accessory):

Wireless base station installationand service instructions

Fitting location for outside tempera-ture sensor

■ North or north-western wall, 2 to2.5 m above ground level; in multistorey buildings, in the upper half ofthe second floor

■ Not above windows, doors or vents

■ Not immediately below balconies orgutters

■ Never render over

Outside temperature sensor connec-tion

2-core lead, length max. 35 m with across-section of 1.5 mm2

External demand via switching contact

Connection options:■ Extension EA1 (accessory, see sepa-

rate installation instructions).■ Plug lH.

Burner operation is load-dependent if thecontact is closed. The boiler water isheated to the value set in coding address"9b" in group "General"/1. The boilerwater temperature is limited by this setvalue and the electronic maximum limit(coding address "06" in group "Boiler"/2).

! Please note'Live' contacts lead to short cir-cuits or phase failure.The external connection must bepotential-free and comply withthe requirements of safety cate-gory II.



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Plug lH Extension EA1

A

lHN?1 L

A Floating contact (when connecting,remove jumper across L and 1)

B[{SDE [{DDE[{ADE

A

A Floating contactB Extension EA1

Codes■ "4b:1" in group "General"/1.■ Effect of the function on the relevant

heating circuit pump:Coding address "d7" in group "Heatingcircuit" (only with weather-compensa-ted control units).

■ Effect of the function on the circulationpump for cylinder heating (if installed):Coding address "5F" in group "DHW"/3.

Codes■ Set "3A" (DE1), "3b" (DE2) or "3C"

(DE3) in group "General"/1 to 2.■ Effect of the function on the relevant

heating circuit pump:Coding address "d7" in group "Heatingcircuit" (only with weather-compensa-ted control units).

■ Effect of the function on the circulationpump for cylinder heating (if installed):Coding address "5F" in group "DHW"/3.

External demand via 0 – 10 V input

Connection at 0 – 10 V input to exten-sion EA1.Ensure DC separation between the earthconductor and the negative pole of theon-site voltage source.



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L?N L?N

fÖ

S P

aBJ

230 V~

Ö

[{{]0-10V f-]A

U 0-10 V

+

+ -

0 – 1 V ≙ No default set boiler watertemperature

1 V ≙ Set value 10 °C10 V ≙ Set value 100 °C

External blocking via switching contact

Connection options:■ Plug lH.■ Extension EA1 (accessory, see sepa-

rate installation instructions).

The burner is switched off if this contactis closed. The heating circuit pump and(if installed) the circulation pump for cyl-inder heating are switched according tothe set code (see following table"Codes").

! Please note'Live' contacts lead to short cir-cuits or phase failure.The external connection must bepotential-free and comply withthe requirements of safety cate-gory II.



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Plug lH Extension EA1

A

lHN?1 L

A Floating contact (when connecting,remove jumper across L and 1)

B[{SDE [{DDE[{ADE

A

A Floating contactB Extension EA1

Codes■ "4b:2" in group "General"/1■ Effect of the function on the heating cir-

cuit pump:Coding address "d6" in group "Heatingcircuit" (only with weather-compensa-ted control units).

■ Effect of the function on the circulationpump for cylinder heating (if installed):Coding address "5E" in group "DHW"/3.

Codes■ Set "3A" (DE1), "3b" (DE2) or "3C"

(DE3) in group "General"/1 to 3 or 4.■ Effect of the function on the heating cir-

cuit pump:Coding address "d6" in group "Heatingcircuit" (only with weather-compensa-ted control units).

■ Effect of the function on the circulationpump for cylinder heating (if installed):Coding address "5E" in group "DHW"/3.



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Power supply for accessories at plug lH (230 V~)

Where the boiler is installed in a wetarea, the power supply connection foraccessories must not be made at thecontrol unit. If the boiler is installed out-side wet areas, then the power supplyconnection for accessories can be madedirectly at the control unit. This connec-tion is switched directly with the ON/OFFswitch of the control unit.

If the total system current exceeds 6 A,connect one or more extensions via anON/OFF switch directly to the mains sup-ply (see next chapter).

Connection of accessories

Power supply and KM BUS

Power supply to all accessories via heat source control unit

145

145

40 A

40 145

145

40 A

40B C

145

40 96

A

145

145

40 A

40

D

E

Some accessories with direct power supply

145

145

40 A

40 145

145

40 A

40

B C

145

40 96

A

145

145

40 A

40

D

E

A Heat source control unitB Extension kit for heating circuit with

mixer M2C Extension kit for heating circuit with

mixer M3

D Extension AM1, EA1 and/or solarcontrol module, type SM1

E ON/OFF switch



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A buffer relay must be fitted if the currentflowing to the connected working parts(e.g. circulation pumps) is higher thanthe safety level of the relevant acces-sory.

Accessories Internal fuseprotection

Extension kit for heat-ing circuit with mixer

2 A

Extension AM1 4 AExtension EA1 2 ASolar control module,type SM1

2 A

Power supply fÖ

DangerIncorrect core allocation canresult in serious injury and dam-age to the appliance.Take care not to interchangewires "L1" and "N".

■ Remove the existing test wires fromplug fÖ.

■ Max. fuse rating 16 A.■ Connect the mains power supply to

plug fÖ.



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Routing the connecting cables

! Please noteIf power cables touch hot compo-nents they will be damaged.

When routing and securingcables/leads on site, ensure thatthe maximum permissible tem-peratures for these cables/leadsare not exceeded.

5

A

C

E

D

B

F

A LV connectionsB 230 V connectionsC Internal extensionD Main PCBE Communication moduleF Cable grommet for power cable

Remove the existing cable grommetwhen using larger cross-sections(up to 7 14 mm). Secure the cablewith cable grommet F (white).

% Type B2HA:Plugs for connecting the cylindertemperature sensor to the cable har-nessType B2KA:Plug for comfort sensor (connectedat the factory)



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5.

4.

2.

6.

2x3.

1.

Insert programming unit (packed sepa-rately) into the control unit support.

NoteThe programming unit can also be inser-ted into a wall mounting base (accesso-ries) near the boiler.

Wall mounting base installationinstructions


Closing the control unit casing and inserting the programming unit

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2x

1.

2.

3.

NoteFit the safety guard and ensure that thelocking screws are tightened beforeoperating.


Fitting the front panel

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For further information regarding the individual steps, see the page indicated

Commissioning steps

Inspection steps

Maintenance steps Page

• 1. Checking the power supply

• 2. Filling the heating system.............................................. 29

• 3. Switching on the mains voltage and ON/OFF switch

• 4. Language selection – only for weather-compensatedcontrol units.................................................................... 30

• • 5. Setting the time and date - only for weather-compensated control units and for timer controlledconstant temperature units........................................... 30

• 6. Note on the automatic flue gas temperature sensortest................................................................................... 31

• 7. Venting the boiler........................................................... 31

• 8. Venting the heating system........................................... 32

• 9. Filling the siphon with water......................................... 33

• • • 10. Checking all connections on the heating water sideand DHW side for leaks

• 11. Designating heating circuits - only for weather-compensated control units............................................ 34

• • 12. Checking the gas type.................................................... 34

• 13. Gas type conversion (only for operation with LPG).... 35

• • • 14. Checking the static and supply pressure..................... 35

• 15. Function sequence and possible faults....................... 37

• 16. Max. heating output setting........................................... 39

• 17. Tightness test for balanced flue system (annular gapcheck).............................................................................. 39

• • 18. Burner removal .............................................................. 40

• • 19. Checking the burner gasket and burner gauzeassembly......................................................................... 41

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance57

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Commissioning steps

Inspection steps

Maintenance steps Page

• • 20. Checking and adjusting the ignition and ionisationelectrodes........................................................................ 42

• 21. Cleaning the heating surfaces....................................... 43

• • 22. Checking the condensate drain and cleaning thesiphon.............................................................................. 43

• • 23. Fitting the burner............................................................ 45

• • 24. Checking the neutralising system (if installed)

• 25. Checking the flow limiter (only for combi boilers)...... 46

• • • 26. Checking the expansion vessel and system pressure 46

• • • 27. Checking the function of safety valves

• • • 28. Checking firm seating of electrical connections

• • • 29. Checking all gas equipment for tightness at operatingpressure........................................................................... 47

• • 30. Checking the combustion quality................................. 47

• • • 31. Checking the flue system for unrestricted flow andtightness

• • • 32. Checking the external LPG safety valve (if installed)

• 33. Matching the control unit to the heating system......... 49

• 34. Adjusting the heating curves (only for weather-compensated control units)........................................... 54

• 35. Connecting the control unit to the LON system - onlyfor weather-compensated control units....................... 57

• 36. Calling up and resetting the service display................ 59

• 37. Instructing the system user........................................... 59


Steps - commissioning, inspection and… (cont.)

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Filling the heating system

Fill water

! Please noteUnsuitable fill water increasesthe level of deposits and corro-sion and may lead to boiler dam-age.■ Flush the heating system thor-

oughly before filling.■ Only use fill water of potable

quality.

■ An antifreeze additive suitablefor heating systems can beadded to the fill water. The anti-freeze manufacturer must ver-ify its suitability.

■ Fill and top-up water with awater hardness in excess ofthe following values must besoftened, e.g. with a small soft-ening system for heating water.

Total permissible hardness of the fill and top-up waterTotal heatingoutput

Specific system volume (Conversion rate 1 mol/m3 = 100ppm)

kW < 20 l/kW ≥ 20 l/kW to< 50 l/kW

≥ 50 l/kW

≤ 50 ≤ 3.0 mol/m3 ≤ 2.0 mol/m3 < 0.02 mol/m3

> 50 to ≤ 200 ≤ 2.0 mol/m3 ≤ 1.5 mol/m3 < 0.02 mol/m3

> 200 to ≤ 600 ≤ 1.5 mol/m3 ≤ 0.02 mol/m3 < 0.02 mol/m3

> 600 < 0.02 mol/m3 < 0.02 mol/m3 < 0.02 mol/m3

Conversion rate 1 mol/m3 = 100ppm

A

1. Check the pre-charge pressure of theexpansion vessel. See page 46.

2. Close the gas shut-off valve.

3. Fill the heating system via boiler drain& fill valve A in the heating return (atthe connection set or on site - mini-mum system pressure > 1.0 bar) orvia a suitable filling loop.


Further details regarding the individual steps57

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NoteIf the control unit has not beenswitched on prior to filling the system,then the servomotor of the divertervalve will still be in its central position,and the system will be completely fil-led.

4. If the control unit had already beenswitched on before filling began:Switch control unit ON and activatefilling function (see next chapter).

5. Close boiler drain & fill valve A.

Activating the filling function

Weather-compensated control unit Constant temperature control unitService menu1. Press OK and å simultaneously for

approx. 4 s.2. "Service functions"3. "Filling"

Filling function is enabled.4. Ending filling function:

Press OK or ä.

Service menu1. Press OK and å simultaneously for

approx. 4 s.2. Select "4" and confirm with OK.

"ON" flashes.3. Activate the filling function with OK.

"bF on" is shown constantly.4. Ending filling function:

Press ä.

Language selection – only for weather-compensated controlunits

At the commissioning stage, the displayis in German (factory setting).

Extended menu:1. å

2. "Einstellungen"3. "Sprache"4. Select the required language with

/ .

Sprache

DanskCeskyBulgarskiDeutsch

Wählen mit

ê

ê

çDEBGCZDK

ê

ê

(

Setting the time and date - only for weather-compensated controlunits and for timer controlled constant temperature units

The time and date need to be reset dur-ing commissioning or after a prolongedtime out of use.

Extended menu:1. å

2. "Settings"3. "Time / Date"4. Set current time and date.


Further details regarding the individual steps (cont.)

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Note on the automatic flue gas temperature sensor test

Weather-compensated control unit Constant temperature control unitAs soon as the time and date have beenset, the control unit automatically checksthe function of the flue gas temperaturesensor.The display shows: "Flue gas temp sen-sor test" and "Active".

NoteIf the flue gas temperature sensor is notpositioned correctly, commissioning iscancelled and fault message A3 is dis-played (see page 135).

Immediately after being switched on, thecontrol unit automatically checks the func-tion of the flue gas temperature sensor.The display shows: "A".

NoteIf the flue gas temperature sensor is notpositioned correctly, commissioning iscancelled and fault message A3 is dis-played (see page 135).

Venting the boiler

B

A



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1. Close the shut-off valves on the heat-ing water side. If required, remove thesafety guard.

2. Push the drain hose (supplied insidethe appliance) onto top valve B andconnect to a drain.

3. Open valves A and B and vent atmains pressure (purge) until nosound of escaping air can be heardand no more air bubbles are visible.

NoteNote the system pressure at the pres-sure gauge. Do not exceed 1.5 bar.

4. First close valve B.

5. When the required operating pres-sure has built up, close valve A.Open the shut-off valves on the heat-ing water side.

6. Remove the drain hose from topvalve B and retain.

Venting the heating system

A

1. Close the gas shut-off valve andswitch the control unit ON.

2. Check whether the air vent screw onquick-action air vent valve A of theheating circuit pump is open.

3. Activate venting program (see follow-ing steps).

NoteFor function and sequence of theventing program, see page 150.

4. Adjust the system pressure.

5. Open the gas shut-off valve.



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Activating the venting function


approx. 4 s.2. "Service functions"3. "Venting"

Venting function is enabled.4. Ending venting function:

Press OK or ä.


approx. 4 s.2. Select "5" with Ú and confirm with

OK."ON" flashes.

3. Activate the venting function with OK."EL on" is shown constantly.

4. Ending venting function:Press ä.

Filling the siphon with water

Multi boiler system:Fill the siphon in the flue gas header withwater as well.

A

B

1. Remove retaining clip A and siphonB.

2. Fill siphon B with water.

3. Fit siphon B and secure with retain-ing clip A.



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NoteNever twist the supply hose duringassembly. Route the drain hose with-out any bends and with a constantfall.

Designating heating circuits - only for weather-compensatedcontrol units

In the delivered condition, the heatingcircuits are designated "Heating circuit1", "Heating circuit 2" and "Heatingcircuit 3" (if installed).If the system user prefers, the heatingcircuits can be designated differently tosuit the specific system.

To enter names for heating circuits:

Operating instructions

Checking the gas type

The boiler is equipped with an electroniccombustion controller that adjusts theburner for optimum combustion inaccordance with the prevailing gas qual-ity.■ For operation with natural gas no

adjustment is therefore requiredacross the entire Wobbe index range.The boiler can be operated in theWobbe index range 9.5 to15.2 kWh/m3 (34.2 to 54.7 MJ/m3).

■ Convert the burner for operation withLPG (see "Gas type conversion" onpage 35).

1. Determine the gas type and Wobbeindex by asking your local gas supplyutility or LPG supplier.

2. Convert the burner for operation withLPG (see page 35).

3. Record the gas type in the report onpage 179.



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Gas type conversion (only for operation with LPG)

1

2

A

1. Set adjusting screw A on the gastrain to "2".

2. Turn on the ON/OFF switch 8.

3. Select the gas type in coding address"82":■ Call up code 2■ "General" (weather-compensated

control unit)orGroup 1 (constant temperaturecontrol unit).

■ Select coding address "11" and setvalue "9". Confirm with OK. Thedisplay shows "11:0".

■ Select coding address "82" and setvalue "1" (LPG operation). Confirmwith OK.

■ Select coding address "11" and setvalue ≠ "9". Confirm with OK. Thedisplay shows "11:0".

■ End service functions.


5. Affix label "G31" (supplied with thetechnical documentation) adjacent tothe type plate on the cover panel.

Checking the static and supply pressure

DangerCO build-up as a result of incor-rect burner adjustment can haveserious health implications.Carry out a CO test before andafter work on gas appliances.

Operation with LPGFlush the LPG tank twice during com-missioning or replacement. Vent the tankand gas connection line thoroughly afterflushing.



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A

1. Close the gas shut-off valve.

2. Undo screw A in test nipple "IN" onthe gas train but do not remove it, andconnect the pressure gauge.


4. Check the static pressure and recordthe actual value in the report onpage 179.Set value: max. 57.5 mbar

5. Switch on mains voltage and start theboiler.

NoteDuring commissioning, the boiler canenter a fault state (fault EE is shown)because of air in the gas line. Afterapprox. 5 s press reset button R toreset the burner.

6. Check the supply (flow) pressure.

Set value:■ Natural gas: 20 mbar■ LPG: 37 mbar

Note■ Use a suitable measuring device

with a resolution of at least0.1 mbar to check the supply pres-sure.

■ The pressure drop between thegas tap and gas valve is 0.5 mbarat full load.

7. Record the actual value in the reporton page 179.Take the action shown in the follow-ing table.

8. Shut down the boiler, close the gasshut-off valve, remove the pressuregauge and close test nipple A withthe screw.

9. Open the gas shut-off valve and startthe appliance.

DangerGas escaping from the testnipple leads to a risk of explo-sion.Check gas tightness at testnipple A.



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Supply pressure (flow pressure) ActionFor natural gas For LPGBelow 17.4 mbar Below 25 mbar Do not start the boiler. Notify your gas

supply utility or LPG supplier.17.4 to 25 mbar 25 to 47 mbar Start the boiler.Above 25 mbar Above 47 mbar Contact your gas supplier if the supply

pressure is incorrect.

Function sequence and possible faults

Display Action Control unit is-

sues a heat de-mand

No Increase set valueand ensure heat isdrawn off

Yes

Fan starts No After approx. 51 s,fault F9

Check the fan, fanconnecting cables,power at the fanand fan control

Yes

Ignition No Fault EE Check ignitionmodule (controlvoltage 230 Vacross plugs"X2.1" and "X2.2").Check the gas sup-ply.

Yes

Gas train opens No Fault EE Check the gas train(control voltage230 V) and gassupply pressure



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Yes

Ionisation currentbuilds Symbol A

No Fault EE Check the ionisa-tion electrode ad-justment and thegas line for air-locks.

Yes

Burner in opera-tion

No Stops below theset boiler watertemperature andrestarts immedi-ately

Check the flue sys-tem for tightness(flue gas recircula-tion); check the gasflow pressure

Yes

Automatic calibra-tion of the com-bustion controller

No

Fault E3 Ensure adequateheat transfer.Press reset buttonR.

Fault Eb Check gap be-tween ionisationelectrode andburner gauze as-sembly.Check allocation ofgas type (codingaddress 82, gastrain setting).Check flue system;remedy flue gas re-circulation if re-quired.Press reset buttonR.

For further details on faults, seepage 110.



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Max. heating output setting

The maximum output for heating oper-ation can be limited. The limit is set viathe modulation range. The max. adjust-able heating output is limited upwards bythe boiler coding card.


approx. 4 s.2. "Service functions"3. "Max. output"4. "Change?" Select "Yes".

A value is shown on the display (e.g."85"). In the delivered condition, thisvalue represents 100 % of rated heat-ing output.

5. Set the required value.


approx. 4 s.2. Select "3" with Ú and confirm with

OK.A value flashes on the display (e.g."85") and "A" appears. In the deliv-ered condition, this value represents100 % of rated heating output.

3. Select required value and confirm withOK.

Tightness test for balanced flue system (annular gap check)

A

A Combustion air aperture

For balanced flue systems testedtogether with the wall mounted gas firedboiler, the requirement for a tightnesstest during commissioning by the fluegas inspector is not applicable.We recommend that your heating engi-neer carries out a simple leak/tightnesstest during the commissioning of yoursystem. For this, it would be sufficient tocheck the CO2 or O2 concentration in thecombustion air at the annular gap of thebalanced flue pipe.The flue pipe is deemed to be gas-tightif the CO2 concentration in the combus-tion air is no higher than 0.2 % or theO2 concentration is at least 20.6 %.If actual CO2 values are higher or O2 val-ues are lower, then pressure test the fluepipe with a static pressure of 200 Pa.



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Burner removal

F

G

D

E4x

C

B

A

1. Switch OFF the power supply and theON/OFF switch at the control unit.

2. Close the gas shut-off valve and safe-guard against reopening.

3. Remove cables from fan motor A,gas train B, ignition and ionisationelectrode C, ignition unit D andearth tab E.

4. Undo gas supply pipe fitting F.

5. Undo four screws G and remove theburner.

! Please notePrevent damage to theburner.Never rest the burner on theburner gauze assembly.



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Checking the burner gasket and burner gauze assembly

Check burner gasket A and burnergauze assembly E for possible damageand replace if required.

A

C

2x

2x

B DEF

1. Remove electrodes B.

2. Undo two retaining clips C on ther-mal insulation ring D and thenremove thermal insulation ring D.

3. Undo two Torx screws and removeburner gauze assembly E with gas-ket F.



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4. Insert new burner gauze assemblyE with new gasket F and secure.

! Please noteFasten screws tightly enough

to ensure the components arenot being damaged and arefunctioning correctly.

5. Fit thermal insulation ring D.

6. Fit electrodes B.



Checking and adjusting the ignition and ionisation electrodes

6+20

4+0.5 0

10±1

A

A B

5+30

A Ignition electrodes B Ionisation electrode

1. Check the electrodes for wear andcontamination.

2. Clean the electrodes with a smallbrush (not with a wire brush) or sand-paper.

3. Check the electrode gaps. If the gapsare not as specified or the electrodesare damaged, replace the electrodestogether with new gaskets and adjustthem as required. Tighten electrodefixing screws.





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Cleaning the heating surfaces

! Please noteThere should be no scratches orother damage on the heatexchanger surface that comesinto contact with hot gases. Thiscould lead to corrosion damage.

Never use brushes to clean theheating surfaces.Brushing can cause existingdeposits to get stuck in the coilgaps.

NoteDiscolouration of the heat exchangersurface is a normal sign of usage. It hasno impact on the function and service lifeof the heat exchanger.The use of chemical cleaning agents isnot necessary.

A 1. Use a vacuum cleaner to removedeposits from heating surfaces A ofthe heat exchanger.

2. If required, rinse heating surfacesA with water.

3. Check condensate drain and cleansiphon. See the following chapter.

Checking the condensate drain and cleaning the siphon

Multi boiler system:Clean the siphon in the flue gas headeras well.



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A

B

1. Check at the siphon that the conden-sate can drain freely.

2. Remove retaining clip A and siphonB.

3. Clean siphon B.

4. Fill siphon B with water and fit inplace. Put on retaining clip A.

NoteNever twist the supply hose duringassembly. Route the drain hose with-out any bends and with a constantfall.



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Fitting the burner

F

G

D

E4x

C

B

A

1. Fit the burner and tighten screws Gdiagonally.



2. Fit gas supply pipe F with a newgasket.

3. Check the gas connections for tight-ness.

DangerEscaping gas leads to a risk ofexplosion.Check all fittings for gas tight-ness.

4. Connect cables from fan motor A,gas train B, ionisation electrodeC, ignition unit D and earth tabE.



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Checking the flow limiter (only for combi boilers)

C

B

A

1. Switch OFF the control unit, shut offthe cold water line and drain the DHWside of the boiler.

2. Undo Allen screws A.

NoteResidual water may escape duringdismantling.

3. Remove flow switch B and take outflow limiter C downwards.

4. Check flow limiter C; replace ifscaled or damaged, then re-insert.Refit flow switch B.

Checking the expansion vessel and system pressure

NoteThe diaphragm expansion vessel canlose some charge pressure over a timein use. When the boiler heats up, thepressure gauge will indicate a higherpressure of 2 or 3 bar. The safety valvetoo can respond and discharge excessvolume (only g).

Check whether the installed diaphragmexpansion vessel is adequate for thesystem water pressure (only g).Carry out this test on a cold system.

1. Drain the system or close the capvalve on the expansion vessel andreduce the pressure until the pres-sure gauge indicates "0".

2. If the pre-charge pressure in theexpansion vessel is lower than thestatic system pressure, top up withsufficient nitrogen to raise the pre-charge pressure 0.1 to 0.2 bar higherthan the static system pressure.



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3. Top up with water until the chargepressure of the cooled system is atleast 1.0 bar, and is 0.1 to 0.2 barhigher than the pre-charge pressureof the expansion vessel.

Permiss. operating pressure: 3 bar

Checking all gas equipment for tightness at operating pressure

DangerEscaping gas leads to a risk ofexplosion.Check all gas equipment for tight-ness.

NoteOnly use suitable and approved leakdetection agents (EN 14291) and devi-ces for the tightness test. Leak detectionagents with unsuitable constituents(e.g. nitrites, sulphides) can cause mate-rial damage.Remove residues of the leak detectionagent after testing.

Checking the combustion quality

The electronic combustion controllerautomatically ensures optimum combus-tion quality. During commissioning/maintenance, only the combustion val-ues need to be checked. As part of this,measure the CO content and CO2 or O2

content and enter into the report onpage 179. For a description of the elec-tronic combustion controller functions,see page 156.

NoteOperate the appliance with uncontami-nated combustion air to prevent operat-ing faults and damage.

CO content■ The CO content must be < 400 ppm for

all gas types.

CO2 or O2 content■ The CO2 content must be within the

following limits (for upper and lowerheating output respectively):– 7.5 to 9.5 % for natural gas E and LL– 8.8 to 11.1 % for LPG P

■ For all gas types, the O2 content mustbe between 4.0 and 7.6 %.

If the actual CO, CO2 or O2 values lieoutside their respective ranges, proceedwith the following steps:■ Carry out a tightness test of the bal-

anced flue system, see page 39.■ Check the ionisation electrode and

connecting cable, see page 42.

NoteDuring commissioning, the combustioncontroller carries out an automatic cali-bration. Only test the emissions approx.30 s after the burner has started.



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A

1. Connect a flue gas analyser at fluegas port A on the boiler flue con-nection.

2. Open the gas shut-off valve, start theboiler and create a heat demand.

3. Set the lower heating output (seepage 48).

4. Check the CO2 content. Should theactual value deviate from the afore-mentioned ranges by more than 1 %,implement steps from page 47.

5. Enter actual values into the report.

6. Set the upper heating output (seepage 48).

7. Check the CO2 content. Should theactual value deviate from the afore-mentioned ranges by more than 1 %,implement steps from page 47.

8. After testing, press OK.

9. Enter actual values into the report.

Select higher/lower heating output


approx. 4 s.2. "Actuator test"3. Select the lower heating output:

Select "Base load OFF". Then "Baseload ON" appears and the burner op-erates at its lower heating output.

4. Select the upper heating output:Select "Full load OFF". Then "Fullload ON" appears and the burner op-erates at its upper heating output.

5. Ending output selection:Press ä.


approx. 4 s.2. Select " " with Ú and confirm with

OK.The display shows "I" and "ON" flash-es.

3. Select the lower heating output:Press OK, "ON" will be displayed con-stantly.

4. Select the upper heating output:Press ä.

5. Select "2" with Ú; "ON" flashes.6. Press OK, "ON" will be displayed con-

stantly.7. Ending output selection:

Press ä.



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Matching the control unit to the heating system

The control unit must be adjusted subjectto the system equipment level.■ To do this, select the relevant system

scheme (see the following diagrams).■ Set the codes in conjunction with the

accessories fitted:

Installation and service instruc-tions for accessories

NoteVarious system components are recog-nised automatically by the control unitand the relevant codes are adjustedautomatically.

For coding steps, see page 60.

System version 1

One heating circuit without mixer A1 (with/without DHW heating)

63

1

5

2

4

ID: 4605145_1001_01

1 Vitodens 200-W2 Outside temperature sensor (only

for weather-compensated controlunits)

3 Vitotrol 100 (only for constant tem-perature control units)

4 DHW cylinder5 Cylinder temperature sensor6 Heating circuit without mixer A1

(heating circuit 1)



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Function/system components CodeAdjust Group

Operation with LPG 82:1 "General"/1System with DHW circulation pump: DHW circulation pump connection at internal exten-sion H1 or H2

— —

System version 2

One heating circuit without mixer A1 and one heating circuit with mixer M2(with/without DHW heating)

NoteThe flow rate of the heating circuit with-out mixer must be at least 30 % greaterthan the flow rate of the heating circuitwith mixer.

1

4

2

3

M

5 6

78

9

qP

ID: 4605148_1001_01

1 Vitodens 200-W2 Outside temperature sensor3 DHW cylinder4 Cylinder temperature sensor5 Heating circuit without mixer A1

(heating circuit 1)

6 Heating circuit with mixer M2(heating circuit 2)

7 Temperature limiter to restrict themaximum temperature of underfloorheating systems

8 Flow temperature sensor M2



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9 Heating circuit pump M2qP Extension kit for one heating circuit

with mixer M2


Operation with LPG 82:1 "General"System only with one heating circuit with mixer withextension kit for mixer (without unregulated heatingcircuit)

■ with DHW cylinder or instantaneous water heater 00:4 "General"■ without DHW cylinder or instantaneous water heat-

er00:3 "General"

System with DHW circulation pump: DHW circulation pump connection at internal exten-sion H1 or H2

— —

System version 3

One heating circuit without mixer A1 and one heating circuit with mixer M2 withsystem separation (with/without DHW heating)

5 6

7

9

8

qQ

MqP

1

4

2

3

qW

ID: 4605147_1001_01

1 Vitodens 200-W2 Outside temperature sensor

3 DHW cylinder4 Cylinder temperature sensor



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5 Heating circuit without mixer A1(heating circuit 1)

6 Heating circuit with mixer M2(heating circuit 2)

7 Temperature limiter to restrict themaximum temperature of underfloorheating systems

8 Flow temperature sensor M2

9 Heating circuit pump M2qP Extension kit for one heating circuit

with mixer M2qQ Heat exchanger for system separa-

tionqW Sub-mounting kit with mixer (acces-

sories)


Operation with LPG 82:1 "General"System only with one heating circuit with mixer withextension kit for mixer (without unregulated heatingcircuit)


er00:3 "General"

System with DHW circulation pump: DHW circulation pump connection at internal exten-sion H1 or H2

— —



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System version 4

One heating circuit without mixer, one heating circuit with mixer M2 (withextension kit), one heating circuit with mixer M3 (with extension kit) and lowloss header (with/without DHW heating)

M MqU

qP

9

87 qQ

qWqE

qR

qT

qZ

1

4

2

36

5

ID: 4605149_1001_01

1 Vitodens 200-W2 Outside temperature sensor3 DHW cylinder4 Cylinder temperature sensor5 Heating circuit without mixer A1

(heating circuit 1)6 Heating circuit pump A17 Heating circuit with mixer M2

(heating circuit 2)8 Flow temperature sensor M29 Heating circuit pump M2qP Extension kit for one heating circuit

with mixer M2

qQ Heating circuit with mixer M3(heating circuit 3)

qW Temperature limiter to restrict themaximum temperature of underfloorheating systems

qE Flow temperature sensor M3qR Heating circuit pump M3qT Extension kit for one heating circuit

with mixer M3qZ Low loss headerqU Flow temperature sensor, low loss

header



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Operation with LPG 82:1 "General"System only with two heating circuits with mixer withextension kit for mixer (without unregulated heatingcircuit)


er00:7 "General"

System without DHW circulation pump: Heating circuit pump A1 connection at internal exten-sion H1 or H2

53:2 "General"

System with DHW circulation pump: Heating circuit pump A1 connection at extensionAM1, terminal A1

— —

DHW circulation pump connection at extension AM1,terminal A2

— —

System with low loss header 04:0 "Boiler"

Adjusting the heating curves (only for weather-compensatedcontrol units)

The heating curves illustrate the relation-ship between the outside temperatureand the boiler water or flow tempera-ture.To put it simply, the lower the outsidetemperature, the higher the boiler wateror flow temperature.The boiler water or flow temperature inturn affects the room temperature.

Settings in the delivered condition:■ Slope = 1.4■ Level = 0

NoteIf the heating system includes heatingcircuits with mixers, then the flow tem-perature of the heating circuit withoutmixer is higher by a selected differential(8 K in the delivered condition) than theflow temperature of the heating circuitswith mixers.The differential temperature is adjusta-ble via coding address "9F" in the "Gen-eral" group.



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0.2

Outside temperature in °C

Boile

r wat

er o

rFl

ow te

mpe

ratu

re in

°C

Slope

2.4

2.6

2.8

3.0

3.2

3.4

90

80

70

60

50

40

30

0 -5 -10 -15 -205102.

0

2.2

Set room temperature in °C

3530

2520

1510

5

0.4

0.6

0.8

1.0

1.2

1.4

-30-25

1.8

1.6

Slope setting ranges:■ Underfloor heating systems: 0.2 to 0.8■ Low temperature heating systems: 0.8

to 1.6

Selecting the set room temperature

Individually adjustable for each heatingcircuit.The heating curve is offset along the axisof the set room temperature. With theheating circuit pump logic function ena-bled, the curve modifies the starting andstopping characteristics of the heatingcircuit pump.

Standard set room temperature

90

-2026 + 20

A

C

D E

B

Example 1: Adjustment of the standardset room temperature from 20 to 26 °C

A Boiler water temperature or flowtemperature in °C

B Outside temperature in °CC Set room temperature in °C



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D Heating circuit pump "OFF" E Heating circuit pump "ON"

Changing the standard set room temper-ature


Reduced set room temperature

+20 14 5

90

-20

D E

A

C

B

Example 2: Adjustment of the reducedset room temperature from 5 °C to14 °C

A Boiler water temperature or flowtemperature in °C

B Outside temperature in °CC Set room temperature in °CD Heating circuit pump "OFF" E Heating circuit pump "ON"

Changing the reduced set room temper-ature


Changing the slope and level

Individually adjustable for each heatingcircuit.

A

BBo

iler w

ater

or

flow

tem

pera

ture

in °

C

90

+20 -20Outside temperature in °C

3.5

1.4

0.2

A Changing the slopeB Changing the level (vertical parallel

offset of the heating curve)

Extended menu:1. å

2. "Heating"3. Select heating circuit.4. "Heating curve"5. "Slope" or "Level"6. Select heating curve according to the

system requirements.



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Connecting the control unit to the LON system - only for weather-compensated control units

The LON communication module(accessories) must be plugged in.

Installation instructionsLON communication module

NoteThe data transfer via LON can take sev-eral minutes.

Single boiler system with Vitotronic200-H and Vitocom 200 (example)

Set the LON subscriber numbers andfurther functions via code 2 (see the fol-lowing table).

NoteIn the same LON system, the same sub-scriber number must not be allocatedtwice.Only one Vitotronic may be program-med as fault manager.

All coding addresses in the table are listed in the "General" group.Boiler control unit Vitotronic 200-H Vitotronic 200-H Vitocom

LON LON LON

Subscriber no. 1,Code "77:1".

Subscriber no. 10,Code "77:10".

Subscriber no. 11,Set code "77:11".

Subscriberno. 99.

Control unit is faultmanager,Code "79:1".

Control unit is notfault manager,Code "79:0".

Control unit is notfault manager,Code "79:0".

Device is faultmanager.

Control unit transmitsthe time,Code "7b:1".

Control unit receivesthe time,Set code "81:3".

Control unit receivesthe time,Set code "81:3".

Device re-ceives thetime.

Control unit transmitsoutside temperature,Set code "97:2".

Control unit receivesoutside tempera-ture,Set code "97:1".

Control unit receivesoutside tempera-ture,Set code "97:1".

—



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Boiler control unit Vitotronic 200-H Vitotronic 200-H VitocomViessmann systemnumber,Code "98:1".

Viessmann systemnumber,Code "98:1".

Viessmann systemnumber,Code "98:1".

—

LON subscriber faultmonitoring,Code "9C:20".



—

Carrying out a LON subscriber check

The subscriber check is used to testcommunication with the system devicesconnected to the fault manager.

Preconditions:■ The control unit must be programmed

as fault manager (code "79:1" in the"General" group).

■ The LON subscriber number must beprogrammed in all control units.

■ The LON subscriber list in the faultmanager must be up to date.

Service menu:1. Press OK and simultaneously for

approx. 4 s.2. "Service functions"3. "Subscriber check"

4. Select subscriber (e.g. subscriber 10).5. Start the subscriber check with "OK".

■ Successfully tested subscribers aredesignated with "OK".

■ Unsuccessfully tested subscribers aredesignated with "Not OK".

NoteTo carry out a new subscriber check,create a new subscriber list with"Delete list?" (subscriber list is upda-ted).

NoteDuring the subscriber check, the displayfor the relevant subscriber shows thesubscriber no. and "Wink" for approx.1 min.



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Calling up and resetting the service display

The red fault indicator flashes when thelimits set in coding addresses "21" and"23" have been reached. (Codingaddress in group "Boiler" (weather-compensated control unit) or group 2(constant temperature control unit).)

Weather-compensated control unit Constant temperature control unitDisplay"Service" and "¸" The specified hours run or the specified

interval with calendar symbol "ý" (sub-ject to setting) and "¸"

Acknowledging a servicePress OK.Service the appliance.

NoteAn acknowledged service message thatwas not reset appears again the followingMonday.

Press OK.Service the appliance.

NoteAn acknowledged service message thatwas not reset appears again after7 days.

After the service has been carried out: Reset the codesService menu:1. Press OK and å simultaneously for

approx. 4 s.2. "Service functions"3. "Service reset"

NoteThe selected service parameters forhours run and interval restart at "0".

Reset code "24:1" in group 2 to "24:0".

NoteThe selected service parameters forhours run and interval restart at "0".

Instructing the system user

The system installer should hand theoperating instructions to the system userand instruct the user in operating thesystem.

This includes all components installed asaccessories, e.g. remote control units. Inaddition, the system installer must makethe user aware of the required mainte-nance work.



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Calling up coding level 1

■ On weather-compensated controlunits, codes are displayed as plaintext.

■ Codes that have not been assigneddue to the heating system equipmentlevel or the setting of other codes arenot displayed.

■ Heating systems with one heating cir-cuit without mixer and one or two heat-ing circuits with mixer:

The heating circuit without mixer isdesignated "Heating circuit 1" andthe heating circuits with mixer as"Heating circuit 2" or "Heating cir-cuit 3".If the heating circuits were given indi-vidual designations, the selected des-ignation and "HC1", "HC2" or "HC3"appear instead.

Weather-compensated control unit Constant temperature control unitThe codes are divided into groups■ "General"■ "Boiler"■ "DHW"■ "Solar"■ "Heating circuit 1/2/3"■ "All codes std device"

In this group, all coding addresses fromcoding level 1 (except the coding ad-dresses from the "Solar" group) aredisplayed in ascending order.

■ "Standard setting"

1: "General"2: "Boiler"3: "DHW"4: "Solar"5: "Heating circuit 1"6: "All codes std device"

In this group, all coding addresses aredisplayed in ascending order.

7: "Standard setting"

Call up code 1Service menu:1. Press OK and å simultaneously for

approx. 4 s.2. "Coding level 1"3. Select group of required coding ad-

dress.4. Select coding address.5. Select value according to the following

tables and confirm with OK.

Service menu:1. Press OK and å simultaneously for

approx. 4 s.2. Select "1" with Ú for coding level 1

and confirm with OK.3. "I" flashes on the display for the coding

addresses in group 1.4. Select the group of required coding ad-

dress with V/v and confirm with OK.5. Select coding address with V/v.6. Set value according to the following ta-

bles with V/v and confirm with OK.

Code 1


5772

909

GB

61

Weather-compensated control unit Constant temperature control unitResetting all codes to their delivered conditionSelect "Standard setting".

NoteThis also resets the codes at coding lev-el 2.

Select "7" with Ú and confirm with OK.When " " flashes, confirm with OK.

NoteThis also resets the codes at coding lev-el 2.

"General"/group 1

Select "General" for weather-compen-sated control units (see page 60).

Select "1" for constant temperature con-trol units (see page 60).

Coding

Coding in the delivered condition Possible changeSystem design00:1 System version 1:

One heating circuit with-out mixer A1 (heating cir-cuit 1), without DHWheating

00:2to00:10

For system schemes, seethe following table:

Valueaddress00: ...

Systemversion

Description

2 1 One heating circuit without mixer A1 (heating circuit 1), withDHW heating (code is adjusted automatically)

3 2, 3 One heating circuit with mixer M2 (heating circuit 2), withoutDHW heating

4 2, 3 One heating circuit with mixer M2 (heating circuit 2), withDHW heating

5 2, 3 One heating circuit without mixer A1 (heating circuit 1) andone heating circuit with mixer M2 (heating circuit 2), withoutDHW heating (code is adjusted automatically)

6 2, 3 One heating circuit without mixer A1 (heating circuit 1) andone heating circuit with mixer M2 (heating circuit 2), with DHWheating (code is adjusted automatically)

Code 1

Calling up coding level 1 (cont.)

5772

909

GB

Serv

ice

62

Valueaddress00: ...

Systemversion

Description

7 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating circuit 3), without DHWheating

8 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating circuit 3), with DHWheating

9 4 One heating circuit without mixer A1 (heating circuit 1), oneheating circuit with mixer M2 (heating circuit 2) and one heat-ing circuit with mixer M3 (heating circuit 3), without DHWheating (code is adjusted automatically)

10 4 One heating circuit without mixer A1 (heating circuit 1), oneheating circuit with mixer M2 (heating circuit 2) and one heat-ing circuit with mixer M3 (heating circuit 3), with DHW heating(code is adjusted automatically)

Coding in the delivered condition Possible changeBoiler/burner51:0 System with low loss

header: Internal circulation pumpalways starts when thereis a heat demand

51:1 System with low loss head-er: When there is a heat de-mand, the internal circula-tion pump is only started ifthe burner is operational.Circulation pump is switch-ed off on expiry of run-ontime.

51:2 System with heating waterbuffer cylinder: When there is a heat de-mand, the internal circula-tion pump is only started ifthe burner is operational. Circulation pump is switch-ed off on expiry of run-ontime.

Code 1

"General"/group 1 (cont.)

5772

909

GB

63

Coding in the delivered condition Possible changeSubscriber no.77:1 LON subscriber number

(only for weather-com-pensated control units)

77:2to77:99

LON subscriber number,adjustable from 1 to 99:1 - 4 = Boiler5 = Cascade10 - 97 = Vitotronic 200-H98 = Vitogate99 = Vitocom

NoteAllocate each number onlyonce.

Detached house/apartment building7F:1 Detached house (only for

weather-compensatedcontrol units)

7F:0 Apartment buildingSeparate adjustment ofholiday program and timeprogram for DHW heatingpossible

Lock out controls8F:0 Operation in the standard

menu and extendedmenu enabled.

NoteThe respective code isonly activated when youexit the service menu.

8F:1 Operation in standardmenu and extended menublocked.Emissions test mode canbe enabled.

8F:2 Operation enabled in thestandard menu andblocked in the extendedmenu.Emissions test mode canbe enabled.

Set flow temperature for external demand9b:70 Set flow temperature for

external demand 70 °C9b:0to9b:127

Set flow temperature forexternal demand adjusta-ble from 0 to 127 °C (limitedby boiler-specific parame-ters)

Code 1


5772

909

GB

Serv

ice

64

Select "Boiler" for weather-compensa-ted control units (see page 60).


Coding

Coding in the delivered condition Possible changeSingle/multi boiler system01:1 Do not adjust (only for

constant temperaturecontrol units)

Burner service in 100 hours21:0 No service interval (hours

run) selected21:1to21:100

The number of hours runbefore the burner shouldbe serviced is adjustablefrom 100 to 10 000 hOne step ≙ 100 h

Service interval in months23:0 No interval for burner

service23:1to23:24

Interval adjustable from 1to 24 months

Service status24:0 "Service" not shown on

display24:1 "Service" is shown on dis-

play (the address is auto-matically set and must bemanually reset after a serv-ice has been carried out)

Filling/Venting2F:0 Venting program/fill pro-

gram disabled2F:1 Venting program enabled2F:2 Fill program enabled

"DHW"/group 3

Select "DHW" for weather-compensa-ted control units (see page 60).


Code 1

"Boiler"/group 2

5772

909

GB

65

Coding

Coding in the delivered condition Possible changeSet DHW temperature reheating suppression67:40 For solar DHW heating:

Set DHW temperature40 °C. Reheating is sup-pressed above the selec-ted set temperature (boil-er is only connected asbackup if the rise in cylin-der temperature is toolow).Cannot be adjusted oncombi boilers.

67:0to67:95

Set DHW temperature ad-justable from 0 to 95 °C(limited by boiler-specificparameters)

Enable DHW circulation pump73:0 DHW circulation pump:

"ON" according to timeprogram (only for weath-er-compensated controlunits and system boilers)

73:1to73:6

"ON" from once per hourfor 5 min up to6 times per hour for 5 minduring the time program

73:7 Constantly "ON"

"Solar"/group 4

Select "Solar" for weather-compensa-ted control units (see page 60).Select "4" for constant temperature con-trol units (see page 60).

NoteThe solar group is only displayed if asolar control module, type SM1, is con-nected.

Coding

Coding in the delivered condition Possible changeSpeed control solar circuit pump02:0 Solar circuit pump is not

speed-controlled.02:1 Solar circuit pump is

speed-controlled withwave packet control.

02:2 Solar circuit pump isspeed-controlled withPWM control.

Code 1

"DHW"/group 3 (cont.)

5772

909

GB

Serv

ice

66

Coding in the delivered condition Possible changeCylinder maximum temperature08:60 Set DHW temperature

(maximum cylinder tem-perature) 60 °C.

08:10to08:90

Set DHW temperature ad-justable from 10 to 90 °C.

Stagnation time reduction0A:5 Temperature differential

for stagnation time reduc-tion (reduction in thespeed of the solar circuitpump to protect systemcomponents and heattransfer medium) 5 K.

0A:0 Stagnation time reductiondisabled.

0A:1to0A:40

Temperature differentialadjustable from 1 to 40 K.

Flow rate solar circuit0F:70 Solar circuit flow rate at

the maximum pumpspeed 7 l/min.

0F:1to0F:255

Flow rate adjustable from0.1 to 25.5 l/min;1 step ≙ 0.1 l/min.

Extended solar control functions20:0 No extended control func-

tion enabled.20:1 Additional function for

DHW heating.20:2 Differential temperature

control 2.20:3 Differential temperature

control 2 and auxiliary func-tion.

20:4 Differential temperaturecontrol 2 for central heatingbackup.

20:5 Thermostat function.20:6 Thermostat function and

auxiliary function.20:7 Solar heating via external

heat exchanger without ad-ditional temperature sen-sor.

20:8 Solar heating via externalheat exchanger with addi-tional temperature sensor.

20:9 Solar heating of two DHWcylinders.

Code 1

"Solar"/group 4 (cont.)

5772

909

GB

67

Select "Heating circuit ..." for weather-compensated control units (seepage 60).


Coding

Coding in the delivered condition Possible changeEconomy function outside temperatureA5:5 With heating circuit pump

logic function (economycontrol): heating circuitpump "OFF" when theoutside temperature (AT)is 1 K higher than the setroom temperature (RTset)AT > RTset + 1 K (only forweather-compensatedcontrol units)

A5:0 Without heating circuitpump logic function

A5:1toA5:15

With heating circuit pumplogic function: Heating cir-cuit pump "OFF"; see fol-lowing table

Parameter addressA5:...

With heating circuit pump logic function: Heating cir-cuit pump "OFF"

1 AT > RTset + 5 K2 AT > RTset + 4 K3 AT > RTset + 3 K4 AT > RTset + 2 K5 AT > RTset + 1 K6 AT > RTset

7to

AT > RTset – 1 K

15 AT > RTset – 9 K

Code 1

"Heating circuit ..."/group 557

72 9

09 G

B

Serv

ice

68

Coding in the delivered condition Possible changeExtended economy function adjusted outside temperatureA6:36 Extended economy con-

trol disabled (only forweather-compensatedcontrol units)

A6:5toA6:35

Extended economy controlenabled, i.e. the burner andheating circuit pump willstop and the mixer will beclosed at a variable value,adjustable between 5 and35 °C plus 1 °C. The basevalue is the adjusted out-side temperature. This val-ue is based on the actualoutside temperature and atime constant, which takesthe cooling down of anaverage building into con-sideration.

Extended economy function mixerA7:0 Without mixer economy

function (only for weath-er-compensated controlunits and heating circuitswith mixer)

A7:1 With mixer economy func-tion (extended heating cir-cuit pump logic): Heating circuit pump also"OFF":■ If the mixer has been

closed for longer than20 min.

Heating circuit pump"ON":■ If the mixer changes to

control function■ If there is a risk of frost

Pump idle time, transition reduced modeA9:7 With pump idle time:

Heating circuit pump"OFF" if the set value isaltered through a changein operating mode orthrough a change in theset room temperature(only for weather-com-pensated control units)

A9:0 Without pump idle timeA9:1toA9:15

With pump idle time, ad-justable from 1 to 15. Thehigher the value, the longerthe pump idle time.

Code 1

"Heating circuit ..."/group 5 (cont.)

5772

909

GB

69

Coding in the delivered condition Possible changeWeather-compensated/room temperature hook-upb0:0 With remote control:

Heating mode/reducedmode: weather-compen-sated (only for weather-compensated controlunits; only change thecode for the heating cir-cuit with mixer)

b0:1 Heating mode: weather-compensatedReduced mode: with roomtemperature hook-up

b0:2 Heating mode: with roomtemperature hook-upReduced mode: weather-compensated

b0:3 Heating mode/reducedmode: with room tempera-ture hook-up

Economy function room temperatureb5:0 With remote control: No

room temperature-de-pendent heating circuitpump logic function (onlyfor weather-compensa-ted control units; onlychange the code for theheating circuit with mix-er)

b5:1tob5:8

For heating circuit pumplogic function, see the fol-lowing table:

Parameter ad-dress b5:...

With heating circuit pump logic function:Heating circuit pump "OFF" Heating circuit pump "ON"

1 RTactual > RTset + 5 K RTactual < RTset + 4 K2 RTactual > RTset + 4 K RTactual < RTset + 3 K3 RTactual > RTset + 3 K RTactual < RTset + 2 K4 RTactual > RTset + 2 K RTactual < RTset + 1 K5 RTactual > RTset + 1 K RTactual < RTset

6 RTactual > RTset RTactual < RTset – 1 K7 RTactual > RTset – 1 K RTactual < RTset – 2 K8 RTactual > RTset – 2 K RTactual < RTset – 3 K

Coding in the delivered condition Possible changeMin. flow temperature heating circuitC5:20 Electronic minimum flow

temperature limit 20 °C(only for weather-com-pensated control units)

C5:1toC5:127

Minimum limit adjustablefrom 1 to 127 °C (limited byboiler-specific parameters)

Code 1


5772

909

GB

Serv

ice

70

Coding in the delivered condition Possible changeMax. flow temperature heating circuitC6:74 Electronic maximum flow


C6:10toC6:127

Maximum limit adjustablefrom 10 to 127 °C (limitedby boiler-specific parame-ters)

Heating program - changeoverd5:0 The external heating pro-

gram changeoverswitches the heating pro-gram to "Constant opera-tion with reduced roomtemperature" or "Standbymode" (only for weather-compensated controlunits)

d5:1 The external heating pro-gram changeover switchesto "Constant operation withstandard room tempera-ture" (subject to coding ad-dress 3A, 3b and 3C)

Ext. heating program changeover to heating circuitd8:0 No heating program

changeover via extensionEA1

d8:1 Heating program change-over via input DE1 at ex-tension EA1



Max. pump speed in standard modeE6:... Maximum speed of the

variable speed heatingcircuit pump in % of themax. speed in standardmode. Value is specifiedby boiler-specific param-eters (only for weather-compensated controlunits).

E6:0toE6:100

Maximum speed adjusta-ble from 0 to 100 %

Code 1


5772

909

GB

71

Coding in the delivered condition Possible changeMin. pump speedE7:30 Minimum speed of the

variable speed heatingcircuit pump: 30 % of themax. speed (only forweather-compensatedcontrol units)

E7:0toE7:100

Minimum speed adjustablefrom 0 to 100 % of the max-imum speed

Screed dryingF1:0 Screed drying disabled

(only for weather-com-pensated control units).

F1:1toF1:6

Screed drying adjustable inaccordance with 6 selecta-ble temperature/time pro-files (see page 151)

F1:15 Constant flow temperature20 °C

Party mode time limitF2:8 Time limit for party mode

or external heating pro-gram changeover via but-ton: 8 h (only for weather-compensated controlunits)*1

F2:0 No time limit for partymode*1

F2:1toF2:12

Time limit adjustable from 1to 12 h*1

Pump control in "Only DHW"F6:25 In the "Only DHW" oper-

ating mode, the internalcirculation pump is per-manently on (only forconstant temperaturecontrol units)

F6:0 In the "Only DHW" operat-ing mode, the internal cir-culation pump is perma-nently off

F6:1toF6:24

In operating mode "DHWonly", the internal circula-tion pump will be started 1to 24 times per day for10 min each time.

Pump control in "Standby mode"F7:25 In "Standby mode", the

internal circulation pumpis permanently on (onlyfor constant temperaturecontrol units)

F7:0 In "Standby mode", the in-ternal circulation pump ispermanently off

F7:1toF7:24

In "Standby mode", the in-ternal circulation pump willbe started 1 to 24 times perday for 10 min each time.

*1 In the "Heating and DHW" program, party mode ends automatically when thesystem changes over to operation with standard room temperature.

Code 1


5772

909

GB

Serv

ice

72

Coding in the delivered condition Possible changeStart temperature raisingF8:–5 Temperature limit for ter-

minating reduced mode–5 °C, see example onpage 153.Observe the setting ofcoding address "A3". (on-ly for weather-compensa-ted control units)

F8:+10toF8:–60

Temperature limit adjusta-ble from +10 to –60 °C

F8:–61 Function disabled

End temperature raisingF9:–14 Temperature limit for rais-

ing the set reduced roomtemperature –14 °C, seeexample on page 153.(only for weather-com-pensated control units)

F9:+10toF9:–60

Temperature limit for rais-ing the set room tempera-ture to the value selectedfor standard mode adjusta-ble from+10 to –60 °C

Set flow temperature increaseFA:20 Raising the set boiler wa-

ter or flow temperature by20 % when changingfrom operation with re-duced room temperatureto operation with stand-ard room temperature.See example onpage 154 (only forweather-compensatedcontrol units).

FA:0toFA:50

Temperature rise adjusta-ble from 0 to 50 %

Duration set flow temperature increaseFb:60 Duration of the set boiler

water or flow temperaturerise (see coding address"FA") 60 min. See exam-ple on page 154 (only forweather-compensatedcontrol units).

Fb:0toFb:300

Duration adjustable from 0to 300 min.

Code 1


5772

909

GB

73


■ All codes are accessible in codinglevel 2.

■ Codes that have not been assigneddue to the heating system equipmentlevel or the setting of other codes arenot displayed.

■ The heating circuit without mixer isdesignated "Heating circuit 1" andthe heating circuits with mixer as"Heating circuit 2" or "Heating cir-cuit 3".

If the heating circuits were given indi-vidual designations, the selected des-ignation and "HC1", "HC2" or "HC3"appear instead.

Weather-compensated control unit Constant temperature control unitThe codes are divided into groups■ "General"■ "Boiler"■ "DHW"■ "Solar"■ "Heating circuit 1/2/3"■ "All codes std device"

In this group, all coding addresses (ex-cept the coding addresses from the"Solar" group) are displayed in as-cending order.

■ "Standard setting"

1: "General"2: "Boiler"3: "DHW"4: "Solar"5: "Heating circuit 1"6: "All codes std device"

In this group, all coding addresses aredisplayed in ascending order.

7: "Standard setting"

Call up code 2Service menu:1. Press OK and simultaneously for

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

approx. 4 s.3. "Coding level 2"4. Select group of required coding ad-

dress.5. Select coding address.6. Select value according to the following

tables and confirm with OK.


approx. 4 s.2. Press OK and ä simultaneously for

approx. 4 s.3. Select "2" with Ú for coding level 2

and confirm with OK.4. "I" flashes on the display for the coding

addresses in group 1.5. Select the group of required coding ad-

dress with V/v and confirm with OK.6. Select coding address with V/v.7. Set value according to the following ta-

bles with V/v and confirm with OK.

Code 2


72 9

09 G

B

Serv

ice

74

Weather-compensated control unit Constant temperature control unitResetting all codes to their delivered conditionSelect "Standard setting".

NoteThis also resets codes at coding level 1.

Select "7" with Ú and confirm with OK.When " " flashes, confirm with OK.

NoteThis also resets codes at coding level 1.

"General"/group 1

Select "General" for weather-compen-sated control units (see page 73).


Coding

Coding in the delivered condition Possible change00:1 System version 1:

One heating circuit with-out mixer A1 (heating cir-cuit 1), without DHWheating

00:2to00:10

For system schemes, seethe following table:

Valueaddress00: ...

Systemversion

Description

2 1 One heating circuit without mixer A1 (heating circuit 1), withDHW heating (code is adjusted automatically)

3 2, 3 One heating circuit with mixer M2 (heating circuit 2), withoutDHW heating

4 2, 3 One heating circuit with mixer M2 (heating circuit 2), withDHW heating

5 2, 3 One heating circuit without mixer A1 (heating circuit 1) andone heating circuit with mixer M2 (heating circuit 2), withoutDHW heating (code is adjusted automatically)

6 2, 3 One heating circuit without mixer A1 (heating circuit 1) andone heating circuit with mixer M2 (heating circuit 2), with DHWheating (code is adjusted automatically)

Code 2

Calling up coding level 2 (cont.)

5772

909

GB

75

Valueaddress00: ...

Systemversion

Description

7 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating circuit 3), without DHWheating

8 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating circuit 3), with DHWheating

9 4 One heating circuit without mixer A1 (heating circuit 1), oneheating circuit with mixer M2 (heating circuit 2) and one heat-ing circuit with mixer M3 (heating circuit 3), without DHWheating (code is adjusted automatically)

10 4 One heating circuit without mixer A1 (heating circuit 1), oneheating circuit with mixer M2 (heating circuit 2) and one heat-ing circuit with mixer M3 (heating circuit 3), with DHW heating(code is adjusted automatically)

Coding in the delivered condition Possible change11:≠9 No access to the coding

addresses for the com-bustion controller param-eters

11:9 Access open to the codingaddresses for the combus-tion controller parameters

25:0 Without outside tempera-ture sensor (for constanttemperature controlunits)

25:1 With outside temperaturesensor (automatic recogni-tion)

2A:0 Without wireless outsidetemperature sensor

2A:1 With wireless outside tem-perature sensor (automaticrecognition)

2A:2 Wireless outside tempera-ture sensor not used

2d:0 Do not adjust 32:0 Without extension AM1 32:1 With extension AM1 (auto-

matic recognition)33:1 Function output A1 at ex-

tension AM1: Heating cir-cuit pump

33:0 Function output A1: DHWcirculation pump

33:2 Function output A1: Circu-lation pump for cylinderheating

Code 2


5772

909

GB

Serv

ice

76

Coding in the delivered condition Possible change34:0 Function output A2 at ex-

tension AM1: DHW circu-lation pump

34:1 Function output A2: Heat-ing circuit pump

34:2 Function output A2: Circu-lation pump for cylinderheating

35:0 Without extension EA1 35:1 With extension EA1 (auto-matic recognition)

36:0 Function output aBJ atextension EA1: Faultmessage

36:1 Function output aBJ: Feedpump

36:2 Function output aBJ: DHWcirculation pump

3A:0 Function input DE1 at ex-tension EA1: Not as-signed

3A:1 Function input DE1: Heat-ing program - changeover

3A:2 Function input DE1: Exter-nal demand with set flowtemperature.Flow temperature setting:Coding address 9b.Internal circulation pumpfunction: Coding address3F.

3A:3 Function input DE1: Exter-nal blocking.Internal circulation pumpfunction: Coding address3E

3A:4 Function input DE1: Exter-nal blocking with fault mes-sage inputInternal circulation pumpfunction: Coding address3E

3A:5 Function input DE1: Faultmessage input

3A:6 Function input DE1: Briefoperation, DHW circulationpump (pushbutton func-tion).DHW circulation pump run-time adjustment: Codingaddress 3d

Code 2


5772

909

GB

77

Coding in the delivered condition Possible change3b:0 Function input DE2 at ex-

tension EA1: Not as-signed

3b:1 Function input DE2: Heat-ing program - changeover

3b:2 Function input DE2: Exter-nal demand with set flowtemperature.Flow temperature setting:Coding address 9b.Internal circulation pumpfunction: Coding address3F.

3b:3 Function input DE2: Exter-nal blocking.Internal circulation pumpfunction: Coding address3E

3b:4 Function input DE2: Exter-nal blocking with fault mes-sage inputInternal circulation pumpfunction: Coding address3E

3b:5 Function input DE2: Faultmessage input

3b:6 Function input DE2: Briefoperation, DHW circulationpump (pushbutton func-tion).DHW circulation pump run-time adjustment: Codingaddress 3d

3C:0 Function input DE3 at ex-tension EA1: Not as-signed

3C:1 Function input DE3: Heat-ing program - changeover

3C:2 Function input DE3: Exter-nal demand with set flowtemperature.Flow temperature setting:Coding address 9b.Internal circulation pumpfunction: Coding address3F.

Code 2


5772

909

GB

Serv

ice

78

Coding in the delivered condition Possible change3C:3 Function input DE3: Exter-

nal blocking.Internal circulation pumpfunction: Coding address3E

3C:4 Function input DE3: Exter-nal blocking with fault mes-sage inputInternal circulation pumpfunction: Coding address3E

3C:5 Function input DE3: Faultmessage input

3C:6 Function input DE3: Briefoperation, DHW circulationpump (pushbutton func-tion).DHW circulation pump run-time adjustment: Codingaddress 3d

3d:5 DHW circulation pumpruntime for brief opera-tion: 5 min

3d:1to3d:60

DHW circulation pump run-time adjustable from 1 to60 min

3E:0 Internal circulation pumpstays in control mode atsignal "External block-ing"

3E:1 Internal circulation pumpstops at signal "Externalblocking"

3E:2 Internal circulation pumpstarts at signal "Externalblocking"

3F:0 Internal circulation pumpstays in control mode atsignal "External de-mand"

3F:1 Internal circulation pumpstops at signal "Externaldemand"

3F:2 Internal circulation pumpstarts at signal "Externaldemand"

4b:0 Function input lH:Room temperature con-troller (Vitotrol 100). Onlyfor constant temperaturecontrol units.

4b:1 External demand4b:2 External blocking

Code 2


5772

909

GB

79

Coding in the delivered condition Possible change51:0 System with low loss

header: Internal circulation pumpalways starts when thereis a heat demand

51:1 System with low loss head-er: When there is a heat de-mand, the internal circula-tion pump is only started ifthe burner is operational.Circulation pump is switch-ed off on expiry of run-ontime.

51:2 System with heating waterbuffer cylinder: When there is a heat de-mand, the internal circula-tion pump is only started ifthe burner is operational. Circulation pump is switch-ed off on expiry of run-ontime.

52:0 Without flow temperaturesensor for low loss head-er

52:1 With flow temperature sen-sor for low loss header (au-tomatic recognition)

53:1 Function connection sKof the internal extension:DHW circulation pump

53:0 Function connection sK:Central fault message

53:2 Function connection sK:External heating circuitpump (heating circuit 1)

53:3 Function connection sK:External circulation pumpfor cylinder heating

54:0 Without solar thermalsystem

54:1 With Vitosolic 100 (auto-matic recognition)

54:2 With Vitosolic 200 (auto-matic recognition)

54:3 No function54:4 With solar control module

SM1 with auxiliary function,e.g. central heating backup(automatic recognition)

6E:50 No display correction ofthe outside temperature.

6E:0to6E:49

Display correction –5 K to–0.1 K

Code 2


5772

909

GB

Serv

ice

80

Coding in the delivered condition Possible change6E:51to6E:100

Display correction +0.1 Kto +5 K

76:0 Without LON communi-cation module (only forweather-compensatedcontrol units)

76:1 With LON communicationmodule (automatic recog-nition)

77:1 LON subscriber number(only for weather-com-pensated control units)

77:2to77:99

LON subscriber number,adjustable from 1 to 99:1 - 4 = Boiler5 = Cascade10 - 97 = Vitotronic 200-H98 = Vitogate99 = Vitocom

NoteAllocate each number onlyonce.

79:1 With LON communicationmodule: Control unit isfault manager (only forweather-compensatedcontrol units)

79:0 Control unit is not faultmanager

7b:1 With LON communicationmodule: Control unittransmits the time (onlyfor weather-compensa-ted control units)

7b:0 Does not transmit time

7F:1 Detached house (only forweather-compensatedcontrol units)

7F:0 Apartment buildingSeparate adjustment ofholiday program and timeprogram for DHW heatingpossible

80:6 If a fault occurs for at least30 s, a fault message isdisplayed

80:0 Immediate fault message80:2to80:199

Minimum fault duration un-til fault message occurs,adjustable from 10 s to995 s; 1 step ≙ 5 s

81:1 Automatic summer/win-tertime changeover

81:0 Manual summer/winter-time changeover

Code 2


5772

909

GB

81

Coding in the delivered condition Possible change81:2 Use of the radio clock re-

ceiver (automatic recogni-tion)

81:3 With LON communicationmodule: The control unit re-ceives the time

82:0 Operation with naturalgas

82:1 Operation with LPG (onlyadjustable if coding ad-dress 11:9 has been set)

86:... Do not adjust 87:... Do not adjust 88:0 Temperature displayed in

°C (Celsius)88:1 Temperature displayed in

°F (Fahrenheit)8A:175 Do not adjust. 8F:0 All controls active 8F:1 All controls locked out

8F:2 Only standard settings canbe controlled

90:128 Time constant for calcu-lating adjusted outsidetemperature 21.3 h

90:1to90:199

Fast (low values) or slow(high values) matching ofthe flow temperature, sub-ject to the set value whenthe outside temperaturechanges;1 step ≙ 10 min

94:0 Without OpenTherm ex-tension

94:1 With OpenTherm exten-sion (automatic recogni-tion)

95:0 Without communicationinterface Vitocom 100,type GSM

95:1 With communication inter-face Vitocom 100,type GSM (automatic rec-ognition)

97:0 With LON communicationmodule: The outside tem-perature of the sensorconnected to the controlunit is utilised internally(only for weather-com-pensated control units)

97:1 Control unit receives out-side temperature

97:2 The control unit transmitsthe outside temperature tothe Vitotronic 200-H

Code 2


5772

909

GB

Serv

ice

82

Coding in the delivered condition Possible change98:1 Viessmann system num-

ber (in conjunction withmonitoring several sys-tems via Vitocom 300)

98:1to98:5

System number adjustablefrom 1 to 5

99:0 Do not adjust 9A:0 Do not adjust 9b:70 Set flow temperature for

external demand 70 °C9b:0to9b:127

Set flow temperature forexternal demand adjusta-ble from 0 to 127 °C (limitedby boiler-specific parame-ters)

9C:20 Monitoring LON subscrib-ers.If there is no responsefrom a subscriber after20 min, the values speci-fied inside the control unitare used. Only then will afault message be issued.(only for weather-com-pensated control units)

9C:0 No monitoring9C:5to9C:60

Time adjustable from 5 to60 min

9F:8 Differential temperature8 K; only in conjunctionwith the mixer circuit (onlyfor weather-compensa-ted control units)

9F:0to9F:40

Differential temperatureadjustable from 0 to 40 K

"Boiler"/group 2

Select "Boiler" for weather-compensa-ted control units (see page 73).


Code 2


5772

909

GB

83

Coding

Coding in the delivered condition Possible change01:1 Do not adjust (only for

constant temperaturecontrol units)

04:1 Minimum burner pausetime subject to the boilerload (specified by boilercoding card)

04:0 Minimum burner pausetime set permanently(specified by boiler codingcard)

06:... Maximum limit of the boil-er water temperature, de-faulted in °C by the boilercoding card

06:20to06:127

Maximum limit of the boilerwater temperature withinthe ranges specified by theboiler

0d:0 Do not adjust 0E:0 Do not adjust 13:1 Do not adjust 14:1 Do not adjust 15:1 Do not adjust 21:0 No service interval (hours

run) selected21:1to21:100

The number of hours runbefore the burner shouldbe serviced is adjustablefrom 100 to 10 000 hOne step ≙ 100 h

23:0 No interval for burnerservice

23:1to23:24

Interval adjustable from 1to 24 months

24:0 "Service" not shown ondisplay

24:1 "Service" is shown on dis-play (the address is auto-matically set and must bemanually reset after a serv-ice has been carried out)

28:0 No burner interval igni-tion

28:1to28:24

Time interval adjustablefrom 1 to 24 h. The burneris force-started once every30 s (only when operatingwith LPG).

2E:0 Do not adjust 2F:0 Venting program/fill pro-

gram disabled2F:1 Venting program enabled2F:2 Fill program enabled

Code 2

"Boiler"/group 2 (cont.)

5772

909

GB

Serv

ice

84

Coding in the delivered condition Possible change30:1 Internal variable speed

circulation pump (auto-matic adjustment)

30:0 Internal circulation pumpwithout variable speed(e.g. temporarily for serv-ice)

31:... Set speed of the internalcirculation pump whenoperated as boiler circuitpump in %, specified bythe boiler coding card

31:0 to31:100

Set speed adjustable from0 to 100 %

38:0 Status burner control unit:Operational (no fault)

38:≠0 Status burner control unit:Error

"DHW"/group 3

Select "DHW" for weather-compensa-ted control units (see page 73).


Coding

Coding in the delivered condition Possible change56:0 Set DHW temperature

adjustable from 10 to60 °C

56:1 Set DHW temperature ad-justable from 10 to above60 °C

NoteMax. value subject to boilercoding card.Observe the max. permis-sible DHW temperature.

57:0 Do not adjust. 58:0 Without auxiliary function

for DHW heating58:10to58:60

Input of a second set DHWtemperature, adjustablefrom 10 to 60 °C (observecoding addresses "56" and"63")

59:0 Cylinder heating:Start point –2.5 KStop point +2.5 K

59:1to59:10

Start point adjustable from1 to 10 K below set value

Code 2

"Boiler"/group 2 (cont.)

5772

909

GB

85

Coding in the delivered condition Possible change5b:0 DHW cylinder directly

connected to the boiler 5b:1 DHW cylinder connected

downstream of the low lossheader

5E:0 Circulation pump for cyl-inder heating stays incontrol mode at signal"External blocking"

5E:1 Circulation pump for cylin-der heating stops at signal"External blocking"

5E:2 Circulation pump for cylin-der heating starts at signal"External blocking"

5F:0 Circulation pump for cyl-inder heating stays incontrol mode at signal"External demand"

5F:1 Circulation pump for cylin-der heating stops at signal"External demand"

5F:2 Circulation pump for cylin-der heating starts at signal"External demand"

60:20 During DHW heating, theboiler water temperatureis max. 20 K higher thanthe set DHW tempera-ture

60:5to60:25

The difference between theboiler water temperatureand the set DHW tempera-ture is adjustable from 5 to25 K

62:2 Circulation pump with2 min run-on time aftercylinder heating

62:0 Circulation pump withoutrun-on time

62:1to62:15

Run-on time adjustablefrom 1 to 15 min

63:0 Without auxiliary functionfor DHW heating (only forconstant temperaturecontrol units)

63:1 Auxiliary function: 1 x daily63:2to63:14

Every 2 days to every14 days

63:15 2 x daily65:... Information on the type of

diverter valve (never ad-just; specified by the boil-er coding card)

Code 2


5772

909

GB

Serv

ice

86

Coding in the delivered condition Possible change67:40 For solar DHW heating:

Set DHW temperature40 °C. Reheating is sup-pressed above the selec-ted set temperature (boil-er is only connected asbackup if the rise in cylin-der temperature is toolow).

67:0to67:95

Set DHW temperature ad-justable from 0 to 95 °C(limited by boiler-specificparameters)

6C:100 Set speed, internal circu-lation pump for DHWheating 100 %

6C:0to6C:100

Set speed adjustable from0 to 100 %

6d:0 Draw-off function disa-bled (only for combi boil-ers)

6d:1to6d:15

Draw-off function with aruntime of 1 to 15 min

6F:... Max. heating output forDHW heating in %, speci-fied by the boiler codingcard

6F:0to6F:100

Max. heating output forDHW heating adjustablefrom min. heating output to100 %

71:0 DHW circulation pump:"ON" in accordance withthe time program (only forweather-compensatedcontrol units)

71:1 "OFF" during DHW heatingto set value 1

71:2 "ON" during DHW heatingto set value 1


72:1 "OFF" during DHW heatingto set value 2

72:2 "ON" during DHW heatingto set value 2


73:1to73:6

"ON" from once per hourfor 5 min up to 6 times perhour for 5 min during thetime program

73:7 Constantly "ON"

"Solar"/group 4

Select "Solar" for weather-compensa-ted control units (see page 73).


Code 2


5772

909

GB

87

NoteThe solar group is only displayed if asolar control module, type SM1, is con-nected.

Coding

Coding in the delivered condition Possible change00:8 Start temperature differ-

ential for solar circuitpump 8 K.

00:2to00:30

Start temperature differen-tial adjustable from 2 to30 K.

01:4 Stop temperature differ-ential for solar circuitpump 4 K.

01:1to01:29

Stop temperature differen-tial adjustable from 1 to29 K.

02:0 Solar circuit pump is notspeed-controlled.

02:1 Solar circuit pump isspeed-controlled withwave packet control.

02:2 Solar circuit pump isspeed-controlled withPWM control.

03:10 Temperature differentialfor the start of the speedcontrol 10 K.

03:5to03:20


04:4 Controller amplification ofthe speed control 4 %/K.

04:1to04:10

Controller amplification ad-justable from 1 to 10 %/K.

05:10 Min. speed of the solarcircuit pump 10 % of themax. speed.

05:2to05:100

Min. speed of the solar cir-cuit pump is adjustablefrom 2 to 100 %.

06:75 Max. speed of the solarcircuit pump 75 % of themax. possible speed.

06:1to06:100

Max. speed of the solar cir-cuit pump is adjustablefrom 1 to 100 %.

07:0 Interval function of the so-lar circuit pump switchedoff.

07:1 Interval function of the so-lar circuit pump switchedon.To capture the collectortemperature more accu-rately, the solar circuitpump starts for short cy-cles.

Code 2


5772

909

GB

Serv

ice

88

Coding in the delivered condition Possible change08:60 Set DHW temperature

(maximum cylinder tem-perature) 60 °C.

08:10to08:90

Set DHW temperature ad-justable from 10 to 90 °C.

09:130 Maximum collector tem-perature (to protect thesystem components)130 °C.

09:20to09:200

Temperature adjustablefrom 20 to 200 °C.

0A:5 Temperature differentialfor stagnation time reduc-tion (reduction in thespeed of the solar circuitpump to protect systemcomponents and heattransfer medium) 5 K.

0A:0 Stagnation time reductionis disabled.

0A:1to0A:40


0b:0 Frost protection functionfor solar circuit switchedoff.

0b:1 Frost protection functionfor solar circuit switched on(not required withViessmann heat transfermedium).

0C:1 Delta T monitoringswitched on.No flow rate captured inthe solar circuit, or flowrate too low.

0C:0 Delta T monitoring switch-ed off.

0d:1 Night circulation monitor-ing switched on.Unintentional flow rate iscaptured in the solar cir-cuit (e.g. at night).

0d:0 Night circulation monitor-ing switched off.

0E:1 Heat statement in con-junction with Viessmannheat transfer medium.

0E:2 Do not adjust.0E:0 No heat statement.

0F:70 Flow rate solar circuit atmax. pump speed7 l/min.

0F:1to0F:255

Flow rate adjustable from0.1 to 25.5 l/min.1 step ≙ 0.1 l/min

10:0 Target temperature con-trol switched off (see cod-ing address "11").

10:1 Target temperature controlswitched on.

11:50 Set solar DHW tempera-ture 50 °C.

11:10to11:90

The set solar DHW temper-ature is adjustable from 10to 90 °C.

Code 2


5772

909

GB

89

Coding in the delivered condition Possible change■ Target temperature

control switched on(code "10:1"):Temperature at whichthe solar heated waterin the DHW cylinder isto be stratified.

■ Code "20:9" (heating oftwo DHW cylinders) isselected:When one DHW cylin-der reaches its setDHW temperature, thesecond DHW cylinderis heated.

12:10 Minimum collector tem-perature (minimum starttemperature for the solarcircuit pump) 10 °C.

12:0 No minimum limit enabled.12:1to12:90

Minimum collector temper-ature adjustable from 1 to90 °C.

20:0 No extended control func-tions enabled.

20:1 Additional function forDHW heating.

20:2 Differential temperaturecontrol 2.

20:3 Differential temperaturecontrol 2 and auxiliary func-tion.

20:4 Differential temperaturecontrol 2 for central heatingbackup.

20:5 Thermostat function.20:6 Thermostat function and

auxiliary function.20:7 Solar heating via external

heat exchanger without ad-ditional temperature sen-sor.

20:8 Solar heating via externalheat exchanger with addi-tional temperature sensor.

20:9 Solar heating of two DHWcylinders.

Code 2


5772

909

GB

Serv

ice

90

Coding in the delivered condition Possible change22:8 Start temperature differ-

ential with central heatingbackup (code "20:4" mustbe selected) 8 K.

22:2to22:30

Start temperature differen-tial adjustable from 2 to30 K.

23:4 Stop temperature differ-ential with central heatingbackup (code "20:4" mustbe selected) 4 K.

23:2to23:30

Stop temperature differen-tial adjustable from 1 to29 K.

24:40 Start temperature forthermostat function (code"20:5" or "20:6" must beselected) 40 °C.

24:0to24:100

Start temperature for ther-mostat function adjustablefrom 0 to 100 K.

25:50 Stop temperature forthermostat function (code"20:5" or "20:6" must beselected) 50 °C.

25:0to25:100

Stop temperature for ther-mostat function adjustablefrom 0 to 100 K.

26:1 Priority for DHW cylinder1 with cyclical heating.(Code "20:9" must be se-lected).

26:0 Priority for DHW cylinder 1without cyclical heating.

26:2 Priority for DHW cylinder 2without cyclical heating.

26:3 Priority for DHW cylinder 2with cyclical heating.

26:4 Cyclical heating withoutpriority for either DHW cyl-inder.

27:15 Cyclical heating time15 min.The DHW cylinder with-out priority is heated atmost for the duration ofthe set cyclical heatingtime if the DHW cylinderwith priority is heated up.

27:5to27:60

The cyclical heating time isadjustable from 5 to60 min.

28:3 Cyclical pause time3 min.

28:1to28:60

Cyclical pause time is ad-justable from 1 to 60 min.

Code 2


5772

909

GB

91

Coding in the delivered condition Possible changeAfter the selected cyclicalheating time for the DHWcylinder without priorityhas expired, the rise incollector temperature iscaptured during the cycli-cal pause time.

"Heating circuit ..."/group 5

Select "Heating circuit ..." for weather-compensated control units (seepage 73).


Coding

Coding in the delivered condition Possible changeA0:0 Without remote control A0:1 With Vitotrol 200A/200 RF

(automatic recognition)A0:2 With Vitotrol 300A/300 RF

or Vitohome 300 (automat-ic recognition)

A1:0 All possible settings atthe remote control can beaccessed

A1:1 Only party mode can be setat the remote control (onlyfor Vitotrol 200)

A3:2 Outside temperature be-low 1 °C: Heating circuitpump "ON"Outside temperatureabove 3 °C: Heating cir-cuit pump "OFF"

A3:–9toA3:15

Heating circuit pump "ON/OFF" (see the following ta-ble)

! Please noteIf a value below 1 °C is selected, there is a risk that pipes outside the thermalenvelope of the house could freeze up.The standby mode in particular should be taken into consideration, e.g. duringholidays.

Code 2


5772

909

GB

Serv

ice

92

Parameter Heating circuit pump Address A3:... "ON" "OFF"–9 –10 °C –8 °C–8 –9 °C –7 °C–7 –8 °C –-6 °C–6 –7 °C –5 °C–5 –6 °C –4 °C–4 –5 °C –3 °C–3 –4 °C –2 °C–2 –3 °C –1 °C–1 –2 °C 0 °C0 –1 °C 1 °C1 0 °C 2 °C2to

1 °Cto

3 °Cto

15 14 °C 16 °C

Coding in the delivered condition Possible changeA4:0 With frost protection (only

for weather-compensa-ted control units)

A4:1 No frost protection; this set-ting is only possible if code"A3:–9" has been selec-ted.

NoteObserve "Please note" forcode "A3"

A5:5 With heating circuit pumplogic function (economycontrol): heating circuitpump "OFF" when theoutside temperature (AT)is 1 K higher than the setroom temperature (RTset)AT > RTset + 1 K (only forweather-compensatedcontrol units)

A5:0 Without heating circuitpump logic function

A5:1toA5:15

With heating circuit pumplogic function: Heating cir-cuit pump "OFF"; see fol-lowing table

Code 2


5772

909

GB

93

Parameter addressA5:...

With heating circuit pump logic function: Heating cir-cuit pump "OFF"

1 AT > RTset + 5 K2 AT > RTset + 4 K3 AT > RTset + 3 K4 AT > RTset + 2 K5 AT > RTset + 1 K6 AT > RTset

7to

AT > RTset – 1 K

15 AT > RTset – 9 K

Coding in the delivered condition Possible changeA6:36 Extended economy con-

trol disabled (only forweather-compensatedcontrol units)

A6:5toA6:35

Extended economy controlenabled, i.e. the burner andheating circuit pump willstop and the mixer will beclosed at a variable value,adjustable between 5 and35 °C plus 1 °C. The basevalue is the adjusted out-side temperature. This val-ue is based on the actualoutside temperature and atime constant, which takesthe cooling down of anaverage building into con-sideration.

A7:0 Without mixer economyfunction (only for weath-er-compensated controlunits and heating circuitswith mixer)

A7:1 With mixer economy func-tion (extended heating cir-cuit pump logic): Heating circuit pump also"OFF":■ If the mixer has been

closed for longer than20 min.

Heating circuit pump"ON":■ If the mixer changes to

control function■ If there is a risk of frost

Code 2


5772

909

GB

Serv

ice

94

Coding in the delivered condition Possible changeA8:1 Heating circuit with mixer

creates a demand for theinternal circulation pump(only for weather-com-pensated control units)

A8:0 Heating circuit with mixercreates no demand for theinternal circulation pump

A9:7 With pump idle time:Heating circuit pump"OFF" if the set value isaltered through a changein operating mode orthrough a change in theset room temperature(only for weather-com-pensated control units)

A9:0 Without pump idle timeA9:1toA9:15

With pump idle time, ad-justable from 1 to 15. Thehigher the value, the longerthe pump idle time.

b0:0 With remote control:Heating mode/reducedmode: weather-compen-sated (only for weather-compensated controlunits; only change thecode for the heating cir-cuit with mixer)

b0:1 Heating mode: weather-compensatedReduced mode: with roomtemperature hook-up

b0:2 Heating mode: with roomtemperature hook-upReduced mode: weather-compensated

b0:3 Heating mode/reducedmode: with room tempera-ture hook-up

b2:8 With remote control andfor the heating circuit, op-eration with room temper-ature hook-up must beprogrammed: Room influ-ence factor 8 (only forweather-compensatedcontrol units; only changethe code for the heatingcircuit with mixer)

b2:0 Without room influenceb2:1to

Room influence factor ad-justable from 1 to 64. Thehigher the value, the great-er the room influence.

Code 2


5772

909

GB

95

Coding in the delivered condition Possible changeb2:64

b5:0 With remote control: Noroom temperature-de-pendent heating circuitpump logic function (onlyfor weather-compensa-ted control units; onlychange the code for theheating circuit with mix-er)

b5:1tob5:8

For heating circuit pumplogic function, see the fol-lowing table:

Parameter ad-dress b5:...

With heating circuit pump logic function:Heating circuit pump "OFF" Heating circuit pump "ON"

1 RTactual > RTset + 5 K RTactual < RTset + 4 K2 RTactual > RTset + 4 K RTactual < RTset + 3 K3 RTactual > RTset + 3 K RTactual < RTset + 2 K4 RTactual > RTset + 2 K RTactual < RTset + 1 K5 RTactual > RTset + 1 K RTactual < RTset

6 RTactual > RTset RTactual < RTset – 1 K7 RTactual > RTset – 1 K RTactual < RTset – 2 K8 RTactual > RTset – 2 K RTactual < RTset – 3 K

Coding in the delivered condition Possible changeC5:20 Electronic minimum flow


C5:1toC5:127

Minimum limit adjustablefrom 1 to 127 °C (limited byboiler-specific parameters)

C6:74 Electronic maximum flowtemperature limit 74 °C(only for weather-com-pensated control units)

C6:10toC6:127

Maximum limit adjustablefrom 10 to 127 °C (limitedby boiler-specific parame-ters)

d3:14 Heating curve slope =1.4

d3:2tod3:35

Heating curve slope adjust-able from 0.2 to 3.5 (seepage 54)

d4:0 Heating curve level = 0 d4:–13tod4:40

Heating curve level adjust-able from –13 to 40 (seepage 54)

Code 2


5772

909

GB

Serv

ice

96

Coding in the delivered condition Possible changed5:0 The external heating pro-

gram changeoverswitches the heating pro-gram to "Constant opera-tion with reduced roomtemperature" or "Standbymode" (only for weather-compensated controlunits)

d5:1 The external heating pro-gram changeover switchesto "Constant operation withstandard room tempera-ture" (subject to coding ad-dress 3A, 3b and 3C)

d6:0 Heating circuit pumpstays in control mode atsignal "External block-ing"

d6:1 Heating circuit pump stopsat signal "External block-ing" (subject to coding ad-dresses 3A, 3b and 3C)

d6:2 Heating circuit pump startsat signal "External block-ing" (subject to coding ad-dresses 3A, 3b and 3C)

d7:0 Heating circuit pumpstays in control mode atsignal "External de-mand"

d7:1 Heating circuit pump stopsat signal "External de-mand" (subject to codingaddresses "3A", "3b" and"3C")

d7:2 Heating circuit pump startsat signal "External de-mand" (subject to codingaddresses "3A", "3b" and"3C")

d8:0 No heating programchangeover via extensionEA1




E1:1 Do not adjust

Code 2


5772

909

GB

97

Coding in the delivered condition Possible changeE2:50 With remote control: No

display correction for theactual room temperature(only for weather-com-pensated control units)

E2:0toE2:49

Display correction –5 KtoDisplay correction –0.1 K

E2:51toE2:99

Display correction +0.1 KtoDisplay correction +4.9 K

E5:0 Without external variablespeed heating circuitpump (only for weather-compensated controlunits)

E5:1 With external variablespeed heating circuit pump(automatic recognition)

E6:... Maximum speed of thevariable speed heatingcircuit pump in % of themax. speed in standardmode. Value is specifiedby boiler-specific param-eters (only for weather-compensated controlunits).

E6:0toE6:100

Maximum speed adjusta-ble from 0 to 100 %

E7:30 Minimum speed of thevariable speed heatingcircuit pump: 30 % of themax. speed (only forweather-compensatedcontrol units)

E7:0toE7:100

Minimum speed adjustablefrom 0 to 100 % of the max-imum speed

E8:1 Minimum speed in opera-tion with reduced roomtemperature subject tothe setting in coding ad-dress "E9" (only forweather-compensatedcontrol units)

E8:0 Speed subject to the set-ting in coding address"E7"

E9:45 Speed of the variablespeed heating circuitpump: 45 % of the max.speed during operationwith reduced room tem-perature (only for weath-er-compensated controlunits)

E9:0toE9:100

Speed adjustable from 0 to100 % of the maximumspeed during operationwith reduced room temper-ature

Code 2


5772

909

GB

Serv

ice

98

Coding in the delivered condition Possible changeF1:0 Screed drying disabled

(only for weather-com-pensated control units).

F1:1toF1:6

Screed drying adjustable inaccordance with 6 selecta-ble temperature/time pro-files (see page 151)

F1:15 Constant flow temperature20 °C

F2:8 Time limit for party modeor external heating pro-gram changeover via but-ton: 8 h (only for weather-compensated controlunits)*1

F2:0 No time limit for partymode*1

F2:1toF2:12

Time limit adjustable from 1to 12 h*1

F5:12 Run-on time of the inter-nal circulation pump inheating mode: 12 min(only for constant temper-ature control units)

F5:0 No run-on time for the in-ternal circulation pump

F5:1toF5:20

Run-on time of the internalcirculation pump adjusta-ble from 1 to 20 min

F6:25 In the "Only DHW" oper-ating mode, the internalcirculation pump is per-manently on (only forconstant temperaturecontrol units)

F6:0 In the "Only DHW" operat-ing mode, the internal cir-culation pump is perma-nently off

F6:1toF6:24

In operating mode "OnlyDHW", the internal circula-tion pump will be started 1to 24 times per day for10 min each time.

F7:25 In "Standby mode", theinternal circulation pumpis permanently on (onlyfor constant temperaturecontrol units)

F7:0 In "Standby mode", the in-ternal circulation pump ispermanently off

F7:1toF7:24

In "Standby mode", the in-ternal circulation pump willbe started 1 to 24 times perday for 10 min each time.

F8:–5 Temperature limit for ter-minating reduced mode–5 °C, see example onpage 153.

F8:+10toF8:–60

Temperature limit adjusta-ble from+10 to –60 °C

F8:–61 Function disabled

*1 In the "Heating and DHW" program, party mode ends automatically when thesystem changes over to operation with standard room temperature.

Code 2


5772

909

GB

99

Coding in the delivered condition Possible changeObserve the setting ofcoding address "A3". (on-ly for weather-compensa-ted control units)

F9:–14 Temperature limit for rais-ing the set reduced roomtemperature –14 °C, seeexample on page 153.(only for weather-com-pensated control units)

F9:+10toF9:–60

Temperature limit for rais-ing the set room tempera-ture to the value selectedfor standard mode adjusta-ble from+10 to –60 °C

FA:20 Raising the set boiler wa-ter or flow temperature by20 % when changingfrom operation with re-duced room temperatureto operation with stand-ard room temperature.See example onpage 154 (only forweather-compensatedcontrol units).

FA:0toFA:50

Temperature rise adjusta-ble from 0 to 50 %

Fb:60 Duration of the set boilerwater or flow temperaturerise (see coding address"FA") 60 min. See exam-ple on page 154 (only forweather-compensatedcontrol units).

Fb:0toFb:300

Duration adjustable from 0to 300 min.

Code 2


5772

909

GB

Serv

ice

100

Weather-compensated control unit Constant temperature control unitCalling up the service levelService menu:1. Press OK and å simultaneously for

approx. 4 s.2. Select required menu. See the follow-

ing diagram.


approx. 4 s."Ü" flashes on the display.

2. Select required function. See the fol-lowing pages.

Exiting the service levelService menu:1. Select "Terminate service?".2. Select "Yes".3. Confirm with OK.

NoteThe system exits the service level auto-matically after 30 min.

Service menu:1. Select "Serv" 7 with Ú.2. Confirm with OK.

"OFF" flashes.3. Confirm with OK.

NoteThe system exits the service level auto-matically after 30 min.

Overview of service menu for weather-compensated mode

Service

Diagnosis

Actuator test

Coding level 1

Brief scan

GeneralHeating circuit 1 HC1Heating circuit 2 HC2

DHWSolar

Enter Vitocom PIN code

Subscriber checkService PIN

Heating circuit 3 HC3

Coding level 2

Fault history

Service functions

Terminate service?

Reset data

FillingVentingMax. output

Service reset

Multi-boiler system

Diagnosis and service scans

Service level

5772

909

GB

101

NoteDo not adjust menu item "Multi-boilersystem".

The menu item turns a weather-compen-sated control unit into a constant tem-perature control unit.

Diagnosis

Operating data

Weather-compensated control unit Constant temperature control unitCalling up operating data■ Operating data can be scanned in six

areas. See "Diagnosis" in the servicemenu overview.

■ Operating data on heating circuits withmixers and solar can only be called upif the components are installed in thesystem.

■ For further information on operating da-ta, see chapter "Brief scan".

■ Operating data can be called up in the"i" menu.

■ For further information on operating da-ta, see chapter "Brief scan".

Calling up operating dataService menu:1. Press OK and å simultaneously for

approx. 4 s.2. "Diagnosis"3. Select required group, e.g. "General".

Note"- - -" appears on the display if a sensorthat has been scanned is faulty.


approx. 4 s.2. Select required information with / .

Note"- - -" appears on the display if a sensorthat has been scanned is faulty.


Service level (cont.)

5772

909

GB

Serv

ice

102

Weather-compensated control unit Constant temperature control unitResetting operating dataSaved operating data (e.g. hours run) canbe reset to "0". The value "Adjusted outside temp" is re-set to the actual value.

Saved operating data (e.g. hours run) canbe reset to "0".


approx. 4 s.2. "Diagnosis"3. "Reset data"4. Select required value (e.g. "Burner

starts") or "All details".


approx. 4 s.2. Select required information with / .3. Confirm with OK; " " flashes.4. Confirm with OK; the value is reset.

Brief scan

In the brief scan, you can scan temper-atures, software versions and connectedcomponents, for example.

Brief scan for weather-compensated control units


approx. 4 s.2. "Diagnosis"3. "Brief scan".4. Press OK.

The display shows 9 lines with 6 fieldseach.

Diagnosis brief scan

2:1:

3:4:

Select with Ø

0001 F

000 0

000 A

000 0

001 2

000


Diagnosis (cont.)

5772

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103

For an explanation of the relevant values in the individual lines and fields, seethe following table:Line (briefscan)

Field

1 2 3 4 5 61: System schemes

01 to 10Software versionControl unit

Software versionProgramming unit

2: 0 0 Device version Device identificationZE-ID

3: 0 0 Number of KM BUSsubscribers

Software version, solarcontrol module SM1

4: Software versionBurner control unit

TypeBurner control unit

Burner control unit ver-sion

5: Internal details for calibration Softwareversion,exten-sion AM1

Softwareversion, ex-tensionEA1

6: 0 0 0 Switchingstate offlowswitch(only forcombiboilers)0: OFF1: Active

0 0

7: LONSubnet address/sys-tem number

LONNode address

0 0

8: LONSBVTconfigu-ration

LONSoftwareversioncommu-nicationcopro-cessor

LONNeuron chip softwareversion

Number of LON sub-scribers


Diagnosis (cont.)

5772

909

GB

Serv

ice

104

Line (briefscan)

Field

1 2 3 4 5 69: Heating circuit A1/

HC1Heating circuit M2/HC2

Heating circuit M3/HC3

Remotecontrol0: With-out1: Vitotrol200A/200 RF2: Vitotrol300A/300 RForVitocom-fort

Softwareversion,remotecontrol


Softwareversion,remotecontrol


Softwareversion, re-mote con-trol

10:(only forKM BUScirculationpumps)

Heating circuitpump, heating cir-cuit A1/HC1

Heating circuitpump, heating cir-cuit M2/HC2

Heating circuit pump,heating circuit M3/HC3

Variablespeedpump0: With-out1: Wilo2: Grund-fos3: Ascoli

Softwareversion,variablespeedpump0: No var-iablespeedpump


Softwareversion,variablespeedpump0: No var-iablespeedpump


Softwareversion,variablespeedpump0: No varia-ble speedpump

11: 0 0 SoftwareversionMixer ex-tensionheatingcircuitM20: Nomixer ex-tension

0 SoftwareversionMixer ex-tensionheatingcircuitM30: Nomixer ex-tension

0


Diagnosis (cont.)

5772

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105

Brief scan for constant temperature control units


approx. 4 s.

"Ü" flashes on the display.2. Confirm with OK.3. Select the required scan with V/v.

For example, "A" for "Max. output"(see following table):

4. Confirm selected scan with OK.

For explanations of individual scans, see the following table:Brief scan Display

0 Systemscheme

Software versionControl unit

SoftwareversionProgram-ming unit

1 Adjusted outside temperature3 Set boiler water temperature4 Common demand temperature5 Set cylinder temperature6 Number of KM BUS sub-

scribersNumber of LON subscrib-ers

7 SNVT con-figuration0: Auto1: Tool

Software versionCommunication coproces-sor

Software versionLON module

8 Subnet address/systemnumber

Node address

9 Burner control unit type Device typeA Diverter

valve sta-tus1: Heating2: Centralposition3: DHWheating

Flow switchstatus0: OFF1: Active

Max. heating output in %

b Boiler coding card (hexadecimal)C Version

DeviceVersionBurner control unit


Diagnosis (cont.)

5772

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Serv

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106

Brief scan Display

d Variablespeedpump1: Wilo2: Grundfos3: Ascoli

SoftwareversionVariablespeed pump0: No varia-ble speedpump

E1

SoftwareversionSolar con-trol mod-ule, typeSM1

Software versionBurner control unit

F1

Code 53setting

Internal details for calibration

Extension AM1F2

Softwareversion

Output A1configura-tion(value corre-sponds tocode 33 set-ting)

Output A1switchingstate0: OFF1: ON

Output A2configura-tion(value cor-responds tocode 34 set-ting)

Output A2switchingstate0: OFF1: ON

Extension EA1F3

Output 157configura-tion(value cor-respondsto setting ofcode 36 ingroup 1"General")

Output 157switchingstate0: OFF1: ON

Input DE1switchingstate0: Open1: Closed



F4

Softwareversion

External hook-up 0 - 10 VDisplay in %


Diagnosis (cont.)

5772

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107

Brief scan Display

Solar control module SM1F5

Stagnation time of the solar thermal system in h

F6

Night circulation, solar thermal system (number)

F7

Monitoring of differential temperature, solar thermal system

F8

Reheatingsuppres-sion0: Disabled1: Active

Output 22switchingstate0: OFF1: ON

OpenTherm extension (if installed)F9

Softwareversion

DHW heat-ing status

External hook-up 0 - 10 VDisplay in %

Checking outputs (actuator test)

Weather-compensated control unit

1. Press OK and å simultaneously forapprox. 4 s.

2. "Actuator test"

The following relay outputs can be controlled subject to system design:Display ExplanationAll actuators OFF All actuators are offBase load ON Burner operates at minimum output; internal pump startsFull load ON Burner operates at maximum output; internal pump startsOutput, internal ON Internal output sÖ (int. pump) active

Valve Heat-ing

Diverter valve set to heating mode

Valve Cen-tre

Diverter valve in central position (filling/draining)

Valve DHW Diverter valve set to DHW mode


Diagnosis (cont.)

5772

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Serv

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108

Display ExplanationHtg circ pumpHC2

ON Heating circuit pump output active (extension to heatingcircuit with mixer)

Mixer HC2 Open "Mixer open" output active (extension to heating circuit withmixer)

Mixer HC2 Close "Mixer close" output active (extension to heating circuitwith mixer)

Htg circ pumpHC3

ON Heating circuit pump output active (extension to heatingcircuit with mixer)

Mixer HC3 Open "Mixer open" output active (extension to heating circuit withmixer)

Mixer HC3 Close "Mixer close" output active (extension to heating circuitwith mixer)

Outp. int. exten.H1

ON Output at internal extension active

AM1 output 1 ON Output A1 at extension AM1 activeAM1 output 2 ON Output A2 at extension AM1 activeEA1 output 1 ON Contact P - S at plug aBJ of extension EA1 closedSolar circuitpump

ON Solar circuit pump output sF on solar control module SM1active

Solar circ pmpmin

ON Solar circuit pump output on solar control module SM1switched to minimum speed

Solar circ pmpmax

ON Solar circuit pump output on solar control module SM1switched to maximum speed

SM1 output 22 ON Output sS on solar control module SM1 active

Constant temperature control unit

1. Press OK and å simultaneously forapprox. 4 s."Ü" flashes on the display.

2. Select " " with Ú and confirm withOK.

3. Select required actuator (output) withV/v (see following table):

4. Confirm selected actuator with OK.The display shows the number for theactivated actuator and "ON".

The following actuators (relay outputs) can be controlled subject to systemdesign:Display Explanation0 All actuators are off1 Burner operates at minimum output; internal pump starts2 Burner operates at maximum output; internal pump starts3 Internal output sÖ (int. pump) is active


Checking outputs (actuator test) (cont.)

5772

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109

Display Explanation4 Diverter valve set to heating mode5 Diverter valve in central position (filling/draining)6 Diverter valve set to DHW mode10 Internal extension output active15 Solar circuit pump output sF on solar control module SM1 active16 Solar circuit pump output on solar control module SM1 switched to min-

imum speed17 Solar circuit pump output on solar control module SM1 switched to

maximum speed18 Output sS on solar control module SM1 active19 Contact P - S at plug aBJ of extension EA1 closed20 Output A1 at extension AM1 active21 Output A2 at extension AM1 active


Checking outputs (actuator test) (cont.)

5772

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Serv

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110


In the event of a fault, red fault indicatorA flashes. " " flashes on the displayand "Fault" is shown.

R

bar

A

The fault code is displayed with OK. For an explanation of the fault code, seethe following pages.For some faults, the type of fault is alsodisplayed in plain text.

Acknowledging a fault

Follow the instructions on the display.

Note■ The fault message is transferred to the

standard menu.■ Any fault message facility, if connec-

ted, will be switched off.■ If an acknowledged fault is not rem-

edied, the fault message will be re-dis-played the following day and the faultmessage facility restarted.

Calling up acknowledged faults

Select "Fault" in the standard menu.The current faults will be displayed in alist.

Calling up fault codes from the faultmemory (fault history)

The 10 most recent faults (includingresolved ones) are saved and can bescanned.Faults are sorted by date.

1. Press OK and å simultaneouslyfor approx. 4 s.

2. "Fault history"

3. "Display?"

Deleting fault history


2. "Fault history"

3. "Delete?"

Troubleshooting

Fault display

5772

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111

Constant temperature control unit

In the event of a fault, red fault indicatorA flashes. The two-digit fault code and(subject to the type of fault) " " or " "flash on the programming unit display.

R

bar

A

Other current faults can be displayedwith / . For an explanation of the faultcodes, see the following pages.

1 5 0

ã

Example: Fault code "50"

Acknowledge a fault

Press OK; the standard display is shownagain.

A fault message facility, if connected, willbe switched OFF.If an acknowledged fault is not remedied,the fault message will be re-displayedthe following day and the fault messagefacility restarted.

Calling up acknowledged faults

Press OK for approx. 4 s. The 10 most recent faults (includingresolved ones) are saved and can becalled up.

Calling up fault codes from the faultmemory (fault history)

The 10 most recent faults (includingthose remedied) are saved and can becalled up.Faults are sorted by date.


2. Select "ã" and activate fault historywith OK.

3. Select fault messages with / .

Deleting fault history

While the list is displayed, press OK until flashes. Confirm with OK.

Troubleshooting

Fault display (cont.)

5772

909

GB

Serv

ice

112

Dis-playedfaultcode

Const. Weath.-comp.

System char-acteristics

Cause Measures

10 X X Controls as ifthe outsidetemperaturewere 0 °C

Short circuit,outside tem-perature sen-sor

Check outside tem-perature sensor(see page 129)


Lead break,outside tem-perature sen-sor

Check outside tem-perature sensor(see page 129)


Communica-tion interrup-tion with wire-less outsidetemperaturesensor

Check wirelessconnection (placewireless outsidetemperature sen-sor close to thewireless base sta-tion).Log off outsidetemperature sen-sor then log onagain.

Wirelessbase sta-tion installa-tion andservice in-structions

Replace wirelessoutside tempera-ture sensor.

20 X X Regulates with-out flow tem-perature sen-sor (low lossheader)

Short circuit,flow tempera-ture sensor

Check low lossheader sensor (seepage 130)

Troubleshooting

Fault codes

5772

909

GB

113

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

28 X X Regulates with-out flow tem-perature sen-sor (low lossheader)

Lead break,flow tempera-ture sensor

Check low lossheader sensor (seepage 130)If no low loss head-er sensor is con-nected, set code52:0.

30 X X Burner blocked Short circuit,boiler watertemperaturesensor

Check the boilerwater temperaturesensor (seepage 130)

38 X X Burner blocked Lead break,boiler watertemperaturesensor

Check the boilerwater temperaturesensor (seepage 130)

40 X Mixer closes Short circuit,flow tempera-ture sensor,heating circuit2 (with mixer)

Check flow temper-ature sensor (seepage 138)

44 X Mixer closes Short circuit,flow tempera-ture sensor,heating circuit3 (with mixer)


48 X Mixer closes Lead break,flow tempera-ture sensor,heating circuit2 (with mixer)


4C X Mixer closes Lead break,flow tempera-ture sensor,heating circuit3 (with mixer)


Troubleshooting

Fault codes (cont.)

5772

909

GB

Serv

ice

114

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

50 X X Onlytype B2HA:No DHW heat-ing by the boil-er

Short circuitin the cylindertemperaturesensor orcomfort sen-sor

Check cylindertemperature sen-sor (see page 130)or comfort sensor(see page 132)

51 X X No DHW heat-ing by the boil-er

Short circuit,outlet temper-ature sensor

Check sensor (seepage 132)

58 X X Onlytype B2HA:No DHW heat-ing by the boil-er

Lead break,cylinder tem-perature sen-sor or comfortsensor

Check cylindertemperature sen-sor (see page 130)or comfort sensor(see page 132)

59 X X No DHW heat-ing by the boil-er

Lead break,outlet temper-ature sensor

Check sensor (seepage 132)

90 X X Control mode Short circuit,temperaturesensor /

Check sensor /on solar controlmodule.

91 X X Control mode Short circuit,temperaturesensor aÖ

Check sensor aÖon solar controlmodule.

92 X X No solar DHWheating

Short circuit,collector tem-perature sen-sor

Check temperaturesensor & on thesolar control mod-ule or sensor onthe Vitosolic.

93 X X Control mode Short circuit,cylinder tem-perature sen-sor

Check temperaturesensor at connec-tion S3 on theVitosolic 100.

94 X X No solar DHWheating

Short circuit,cylinder tem-perature sen-sor

Check temperaturesensor % on solarcontrol module orsensor on theVitosolic.

Troubleshooting

Fault codes (cont.)

5772

909

GB

115

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

98 X X Control mode Lead break,temperaturesensor /

Check sensor /on solar controlmodule.

99 X X Control mode Lead break,temperaturesensor aÖ

Check sensor aÖon the solar controlmodule.

9A X X No solar DHWheating

Lead break,collector tem-perature sen-sor

Check temperaturesensor & on thesolar control mod-ule or sensor onthe Vitosolic.

9b X X Control mode Lead break,temperaturesensor

Check temperaturesensor at connec-tion S3 on theVitosolic 100.

9C X X No solar DHWheating

Lead break,cylinder tem-perature sen-sor

Check temperaturesensor % on solarcontrol module orsensor on theVitosolic.

9E X X Control mode No flow ratein collectorcircuit or flowrate too low,or tempera-ture limiterhas respon-ded

Check solar circuitpump and solar cir-cuit. Acknowledgefault message.

9F X X Control mode Solar controlmodule orVitosolic faul-ty

Replace solar con-trol module orVitosolic

A3 X Burner blocked Flue gas tem-perature sen-sor not posi-tioned cor-rectly.

Install flue gas tem-perature sensorcorrectly (seepage 134).

Troubleshooting

Fault codes (cont.)

5772

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GB

Serv

ice

116

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

A7 X Control modeas per deliv-ered condition

Programmingunit faulty

Replace program-ming unit

b0 X X Burner blocked Short circuit,flue gas tem-perature sen-sor

Check flue gastemperature sen-sor

b1 X X Control modeas per deliv-ered condition

Communica-tion fault, pro-grammingunit

Check connectionsand replace pro-gramming unit if re-quired

b5 X X Control modeas per deliv-ered condition

Internal fault Replace the controlunit

b7 X X Burner blocked Boiler codingcard faulty

Plug in boiler cod-ing card or replaceif faulty

b8 X X Burner blocked Lead break,flue gas tem-perature sen-sor

Check flue gastemperature sen-sor

bA X Mixer regulatesto 20 °C flowtemperature.

Communica-tion error, ex-tension kit forheating circuit 2(with mixer)

Check extensionkit connections andcode.

bb X Mixer regulatesto 20 °C flowtemperature.

Communica-tion error, ex-tension kit forheating circuit 3(with mixer)

Check extensionkit connections andcode.

Troubleshooting

Fault codes (cont.)

5772

909

GB

117

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

bC X Control modewithout remotecontrol

Communica-tion error, re-mote controlVitotrolheating circuit 1(without mix-er)

Check connec-tions, cable, codingaddress "A0" ingroup "Heatingcircuit" and re-mote control set-ting (seepage 156).For wireless re-mote controls:Check connec-tions, place remotecontrol unit close tothe boiler.

bd X Control modewithout remotecontrol

Communica-tion error, re-mote controlVitotrolheating circuit 2(with mixer)


Troubleshooting

Fault codes (cont.)

5772

909

GB

Serv

ice

118

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

bE X Control modewithout remotecontrol

Communica-tion error, re-mote controlVitotrolheating circuit 3(with mixer)


bF X Control mode IncorrectLON commu-nication mod-ule

Replace LON com-munication module

C1 X X Control mode Communica-tion fault, ex-tension EA1

Check connec-tions

C2 X X Control mode Communica-tion error, so-lar controlmodule orVitosolic

Check solar controlmodule orVitosolic

C3 X X Control mode Communica-tion fault, ex-tension AM1

Check connec-tions

C4 X X Control mode Communica-tion fault,OpenThermextension

Check OpenThermextension

Troubleshooting

Fault codes (cont.)

5772

909

GB

119

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

C5 X X Control mode,max. pumpspeed

Communica-tion error, var-iable speedinternal pump

Check setting ofcoding address"30" in group "Boil-er" (weather-com-pensated controlunits) or group 2(constant tempera-ture control units)

C6 X Control mode,max. pumpspeed

Communica-tion error, ex-ternal varia-ble speedheating circuitpump,heating circuit 2(with mixer)

Check coding ad-dress setting "E5"in group "Heatingcircuit"

C7 X X Control mode,max. pumpspeed

Communica-tion error, ex-ternal varia-ble speedheating circuitpump,heating circuit 1(without mix-er)


C8 X Control mode,max. pumpspeed

Communica-tion error, ex-ternal varia-ble speedheating circuitpump,heating circuit 3(with mixer)


Troubleshooting

Fault codes (cont.)

5772

909

GB

Serv

ice

120

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

Cd X X Control mode Communica-tion errorVitocom 100,type GSM(KM BUS)

Check connectionsfor Vitocom 100,type GSM and cod-ing address "95" ingroup "General"(weather-compen-sated control units)or group 1 (con-stant temperaturecontrol units)

CF X Control mode Communica-tion fault,LON commu-nication mod-ule

Replace LON com-munication module

d6 X X Control mode Input DE1 atextensionEA1 reports afault

Remove fault atappliance con-cerned

d7 X X Control mode Input DE2 atextensionEA1 reports afault


d8 X X Control mode Input DE3fault at exten-sion EA1


dA X Control modewithout roominfluence

Short circuit,room temper-ature sensor,heating circuit 1(without mix-er)

Check room tem-perature sensor,heating circuit 1

db X Control modewithout roominfluence

Short circuit,room temper-ature sensor,heating circuit 2(with mixer)


Troubleshooting

Fault codes (cont.)

5772

909

GB

121

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

dC X Control modewithout roominfluence

Short circuit,room temper-ature sensor,heating circuit 3(with mixer)


dd X Control modewithout roominfluence

Lead break,room temper-ature sensor,heating circuit 1(without mix-er)

Check room tem-perature sensor,heating circuit 1and remote controlsettings (seepage 156)

dE X Control modewithout roominfluence

Lead break,room temper-ature sensor,heating circuit 2(with mixer)


dF X Control modewithout roominfluence

Lead break,room temper-ature sensor,heating circuit 3(with mixer)


E0 X Control mode Fault, exter-nal LON sub-scriber

Check connectionsand LON subscrib-ers

Troubleshooting

Fault codes (cont.)

5772

909

GB

Serv

ice

122

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

E1 X X Burner in a faultstate

Ionisationcurrent toohigh duringcalibration

Check gap be-tween ionisationelectrode andburner gauze as-sembly (seepage 42).In open flue opera-tion, prevent highincidence of dust inthe combustionair.Press reset buttonR.


Heat transfertoo low duringcalibration.Temperaturelimiter causedshutdown.

Ensure adequateheat transfer.Press reset buttonR.

E4 X X Burner blocked 24 V powersupply fault

Replace controlunit.

E5 X X Burner blocked Fault, flameamplifier

Replace controlunit.

Troubleshooting

Fault codes (cont.)

5772

909

GB

123

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures


Ionisationcurrent toolow duringcalibration

Check ionisationelectrode:■ Distance to burn-

er gauze assem-bly (see page 42)

■ Contamination ofelectrode

■ Connecting leadand plug-in con-nections

Check flue system;remedy flue gas re-circulation if re-quired.Press reset buttonR.


The ionisa-tion currentlies outsidethe permissi-ble range

Check gas supply(gas pressure andgas flow switch),gas train and con-necting lead.Check allocation ofgas type (seepage 35).

Check ionisationelectrode:■ Distance to burn-



Press reset buttonR.

Troubleshooting

Fault codes (cont.)

5772

909

GB

Serv

ice

124

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

EA X X Burner in a faultstate

Ionisationcurrent out-side permissi-ble range dur-ing calibration(deviationfrom previouslevel toogreat)

Check flue system;remedy flue gas re-circulation if re-quired.In open flue opera-tion, prevent highincidence of dust inthe combustionair.Press reset buttonR.Following severalunsuccessful resetattempts, replaceboiler coding cardand press resetbutton R.

Eb X X Burner in a faultstate

Repeatedflame lossduring cali-bration

Check gap be-tween ionisationelectrode andburner gauze as-sembly (seepage 42).Check allocation ofgas type (seepage 35).Check flue system;remedy flue gas re-circulation if re-quired.Press reset buttonR.

EC X X Burner in a faultstate

Parameterfault duringcalibration

Press reset buttonRorReplace boiler cod-ing card and pressreset button R.

Troubleshooting

Fault codes (cont.)

5772

909

GB

125

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

Ed X X Burner in a faultstate

Internal fault Replace controlunit.

EE X X Burner in a faultstate

Flame signalis not presentor too weak atburner start.

Check gas supply(gas pressure andgas flow switch). Check gas train.Check ionisationelectrode and con-necting cable.

Check ignition:■ Connecting

leads to ignitionmodule and igni-tion electrode

■ Ignition elec-trode gap andcontamination(see page 42).

Check condensatedrain.Press reset buttonR.

Troubleshooting

Fault codes (cont.)

5772

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GB

Serv

ice

126

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

EF X X Burner in a faultstate

Flame is lostimmediatelyafter it hasformed (dur-ing the safetytime).

Check gas supply(gas pressure andgas flow switch).Check balancedflue system for fluegas recirculation.

Check ionisationelectrode (replaceif required):■ Distance to burn-



Press reset buttonR.

F0 X X Burner blocked Internal fault Replace controlunit.

F1 X X Burner in a faultstate

Flue gas tem-perature limit-er has re-sponded.

Check heating sys-tem fill level. Ventthe system. Press reset buttonR after flue systemhas cooled down.


Temperaturelimiter has re-sponded.

Check heating sys-tem fill level. Checkcirculation pump.Vent the system.Check temperaturelimiter and con-necting cables. Press reset buttonR.

Troubleshooting

Fault codes (cont.)

5772

909

GB

127

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures


Flame signalis alreadypresent atburner start.

Check ionisationelectrode and con-necting cable. Press reset buttonR.


Fuel valvecloses toolate.

Check gas train.Check both controlpaths.Press reset buttonR.


Fan speedtoo low duringburner start

Check fan, fan con-necting cables andpower supply;check fan control.Press reset buttonR.

FA X X Burner in a faultstate

Fan not in idlestate

Check fan, fan con-necting cables andfan control.Press reset buttonR.

FC X X Burner in a faultstate

Gas train faul-ty, faulty mod-ulation valvecontrol or fluegas pathblocked

Check gas train.Check flue sys-tem.Press reset buttonR.

Fd X X Burner in a faultstate and faultmessage b7 isdisplayed

Boiler codingcard is miss-ing

Insert the boilercoding card.Press reset buttonR.Replace controlunit if fault per-sists.

Troubleshooting

Fault codes (cont.)

5772

909

GB

Serv

ice

128

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

Fd X X Burner in a faultstate

Fault, burnercontrol unit

Check ignitionelectrodes andconnecting cables.Check whether astrong interference(EMC) field existsnear the appliance.

Press reset buttonR.Replace controlunit if fault per-sists.

FE X X Burner blockedor in a faultstate

Boiler codingcard or mainPCB faulty, orincorrect boil-er codingcard

Press reset buttonR. If the fault per-sists, check theboiler coding cardand replace boilercoding card or con-trol unit if necessa-ry.

FF X X Burner blockedor in a faultstate

Internal faultor reset but-ton Rblocked

Start the applianceagain. Replace thecontrol unit if theappliance will notrestart.

Troubleshooting

Fault codes (cont.)

5772

909

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129

Checking the outside temperature sensor

X3

100

10

-20 -10 0 10 20 30Temperature in °C

68

20

406080

200

Res

ista

nce

in k

Ω

Sensor type: NTC 10 kΩ

1. Pull plug "X3" from the control unit.

2. Test the resistance of the outsidetemperature sensor across terminals"X3.1" and "X3.2" on the disconnec-ted plug and compare it with thecurve.

3. Where actual values deviate severelyfrom the curve values, disconnect thewires at the sensor and repeat thetest on the sensor itself.

4. Depending on the result, replace thelead or the outside temperature sen-sor.

Troubleshooting

Repairs57

72 9

09 G

B

Serv

ice

130

Checking the boiler temperature sensor, cylinder temperaturesensor or low loss header flow temperature sensor

%

A

X3

Troubleshooting

Repairs (cont.)

5772

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131

10

1

10 30 50 70 90 110Temperature in °C

0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


1. ■ Boiler water temperature sensorPull the leads from boiler watertemperature sensor A and checkthe resistance.

■ Cylinder temperature sensorPull plug % from the cable har-ness at the control unit and checkthe resistance.

■ Low loss header flow tempera-ture sensorPull plug "X3" from the control unitand check the resistance acrossterminals "X3.4" and "X3.5".

2. Check the sensor resistance andcompare it with the curve.

3. Replace the sensor in the case ofsevere deviation.

DangerThe boiler water temperaturesensor is immersed in theheating water (risk of scald-ing).Drain the boiler on the heatingwater side before replacingthe sensor.

Troubleshooting

Repairs (cont.)

5772

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Serv

ice

132

Checking the outlet temperature sensor or comfort sensor(combi boilers only)

B

A

10

1


0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


1. Disconnect the leads from outlet tem-perature sensor A or comfort sensorB.



NoteWater can leak when replacing theoutlet temperature sensor. Close thecold water shut-off valve. Drain theDHW line and the plate heatexchanger (DHW side).

Troubleshooting

Repairs (cont.)

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Checking the plate heat exchanger

B

FG HK

EDC

A

F Heating returnG Cold waterH Heating flowK DHW

1. Shut off and drain the boiler on theheating water and DHW sides.

2. Release the side closures and pivotthe control unit forward.

3. Disconnect leads from comfort sen-sor A.

4. Remove the retaining clip and siphonB.

5. Remove thermal insulation C.

6. Undo screws D and remove plateheat exchanger E through thefront.

NoteDuring disassembly and onceremoved, small amounts of watermay escape from the plate heatexchanger.

7. Check the connections on the DHWside for scaling, and if required cleanor replace the plate heat exchanger.

8. Check the connections on the heat-ing water side for contamination, andif required clean or replace the plateheat exchanger.

9. Install in reverse order using newgaskets.

Troubleshooting

Repairs (cont.)

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10. DangerEscaping gas leads to a riskof explosion.Check all gas equipment fortightness.

Checking the flue gas temperature sensor

The flue gas temperature sensor locksout the boiler when the permissible fluegas temperature is exceeded. Reset theinterlock after the flue system has cooleddown by pressing reset button R.

A

10

1


0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


1. Pull leads from flue gas temperaturesensor A.



Troubleshooting

Repairs (cont.)

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Fault "A3" during commissioning

During commissioning, the control unitchecks whether the flue gas temperaturesensor is correctly positioned.If the flue gas temperature sensor is notpositioned correctly, commissioning iscancelled and fault message A3 is dis-played.

1. Check whether the flue gas temper-ature sensor is correctly inserted.See previous diagram.

2. If necessary, correct the position ofthe flue gas temperature sensor orreplace faulty flue gas temperaturesensor.

3. Press reset button R and repeat com-missioning.The check is repeated until it is com-pleted successfully.

Checking the temperature limiter

If the burner control unit cannot be resetafter a fault shutdown, although theboiler water temperature is belowapprox. 75 °C, check the following:

A

1. Pull the leads from temperature lim-iter A.

2. Check the continuity of the tempera-ture limiter with a multimeter.

3. Remove the faulty temperature lim-iter.

4. Coat the replacement temperaturelimiter with heat conducting pasteand install it.

5. After commissioning, press reset but-ton R on the control unit.

Troubleshooting

Repairs (cont.)

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Checking the fuse

F1A

1. Switch off the power.

2. Release the side closures and pivotthe control unit down.

3. Remove cover A.

4. Check fuse F1 (see connection andwiring diagram).

Extension kit for heating circuit with mixer

Checking the setting of rotary selec-tor S1

The rotary selector on the PCB of theextension kit defines the assignment tothe relevant heating circuit.

Heating circuit Rotary se-lector S1 set-ting

Heating circuit with mix-er M2(heating circuit 2)

2 2 3 45

6

109 87

Heating circuit with mix-er M3(heating circuit 3)

4 42 3

56

109 87

Troubleshooting

Repairs (cont.)

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Checking the rotational direction ofthe mixer motor

After being switched on, the boiler imple-ments a self-test. During this, the mixeris opened and closed again.

NoteThe mixer motor can also be set inmotion via the actuator test (see chapter"Checking outputs").

Note the rotational direction of the mixermotor during its self-test.Then set the mixer manually to "Open"again.

NoteThe flow temperature sensor must nowcapture a higher temperature. If the tem-perature drops, either the motor is turn-ing in the wrong direction or the mixerinsert is incorrectly fitted.

Mixer installation instructions

Changing the rotational direction of the mixer motor (if required)

gS

BU|

~

1. Remove the upper casing cover ofthe extension kit.

DangerAn electric shock can be life-threatening.Before opening the boiler, dis-connect from the mains volt-age, for example at the fuse orthe mains isolator.

2. At plug gS, swap the cores at termi-nals "|" and "~".

3. Refit the casing cover.

Troubleshooting

Repairs (cont.)

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Checking flow temperature sensor

Pressure drop curve

10

1


0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


1. Remove plug ? (flow temperaturesensor).

2. Check the sensor resistance andcompare it with the curve.Replace the sensor in the case ofsevere deviation.

Checking the Vitotronic 200-H (accessory)

The Vitotronic 200-H is connected to thecontrol unit via the LON cable. To test theconnection, carry out a subscriber checkat the boiler control unit (see page 57).

Troubleshooting

Repairs (cont.)

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48°C

s A

Heating mode

The selected set boiler water tempera-ture will be maintained when a demandis being raised by the room thermostatand the heating program is set to DHWand central heating "G". The boiler water temperature will bemaintained at the default frost protectiontemperature when there is no demand.

The electronic temperature limiter insidethe burner control unit limits the boilerwater temperature.Flow temperature setting range: 20 to74 °C.

DHW heating with gas condensing combi boiler

If the flow switch detects that DHW isbeing drawn off (> 3 l/min), the burner,circulation pump and 3-way valve arestarted or changed over. The burnermodulates to reach the DHW outlet tem-perature and is limited on the boiler sideby the temperature limiter.

DHW heating with gas condensing boiler

The burner, the circulation pump and the3-way valve are started or changed overif the cylinder temperature lies 2.5 Kbelow the set cylinder temperature.

Function description

Constant temperature control unit57

72 9

09 G

B

Serv

ice

140

In the delivered condition, the set boilerwater temperature is 20 K above the setDHW temperature (adjustable via codingaddress "60" in group "DHW" (weather-compensated control units) or group 3(constant temperature control units).The burner will be switched off and thecirculation pump run-on time will begin,if the actual cylinder temperatureexceeds the set cylinder temperature by2.5 K.


48 °CBoiler temperature

HC1

14°C 21°C

Heating mode

The control unit determines a set boilerwater temperature subject to outsidetemperature or room temperature (if aroom temperature-dependent remotecontrol is connected) and to the slope/level of the heating curve. The determined set boiler water temper-ature is transferred to the burner controlunit. From the set and actual boiler watertemperatures, the burner control unit cal-culates the modulation level and regu-lates the burner accordingly.

The electronic temperature limiter insidethe burner control unit limits the boilerwater temperature.


Constant temperature control unit (cont.)

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DHW heating with gas condensing combi boiler

If the flow switch detects that DHW isbeing drawn off (> 3 l/min), the burner,circulation pump and 3-way valve arestarted or changed over. The burnermodulates to reach the DHW outlet tem-perature and is limited on the boiler sideby the temperature limiter.

DHW heating with gas condensing boiler

The burner, the circulation pump and the3-way valve are started or changed overif the cylinder temperature lies 2.5 Kbelow the set cylinder temperature.

In the delivered condition, the set boilerwater temperature is 20 K above the setDHW temperature (adjustable via codingaddress "60" in group "DHW" (weather-compensated control units) or group 3(constant temperature control units).The burner will be switched off and thecirculation pump run-on time will begin,if the actual cylinder temperatureexceeds the set cylinder temperature by2.5 K.

Boosting DHW heating

This function is activated by specifying asecond set DHW temperature via codingaddress 58 in group "DHW" and activat-ing the fourth DHW phase for DHW heat-ing.

Heating is boosted during the periodsselected in this time phase.


Weather-compensated control unit (cont.)

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Internal extension H1

The internal extension is integrated intothe control unit casing. The followingalternative functions can be connectedto relay output sK. The function isassigned via coding address "53" ingroup "General":■ Central fault message (code "53:0")■ DHW circulation pump (code "53:1")

(only for weather-compensated oper-ation)

■ Heating circuit pump for heating circuitwithout mixer (code "53:2")

■ Circulation pump for cylinder heating(code "53:3")

An external gas isolation valve can beconnected to connection gD.


Internal extensions (accessories)

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Internal extension H2

The internal extension is integrated intothe control unit casing. The followingalternative functions can be connectedto relay output sK. The function isassigned via coding address "53" ingroup "General":■ Central fault message (code "53:0")■ DHW circulation pump (code "53:1")

(only for weather-compensated oper-ation)

■ Heating circuit pump for heating circuitwithout mixer (code "53:2")

■ Circulation pump for cylinder heating(code 53:3)

An extractor fan can be switched off viaconnection aBJ when the burner starts.


Internal extensions (accessories) (cont.)

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Extension AM1

A1 Circulation pumpA2 Circulation pumpfÖ Power supply

fÖ A Power supply for additionalaccessories

aVG KM BUS


External extensions (accessories)

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Functions

One of the following circulation pumpscan be connected to each of the connec-tions A1 and A2:■ Heating circuit pump for the heating

circuit without mixer■ Circulation pump for cylinder heating■ DHW circulation pump

Select the output functions by means ofthe codes on the boiler control unit.

Function assignmentFunction Code ("General" group) Output A1 Output A2DHW circulation pump sK 33:0 34:0 (delivered condi-

tion)Heating circuit pump sÖ 33:1 (delivered condi-

tion)34:1

Circulation pump for cylinderheating sA

33:2 34:2


External extensions (accessories) (cont.)

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Extension EA1

A1 PCBF1 Fuse/MCBDE1 Digital input 1DE2 Digital input 2DE3 Digital input 30 – 10 V 0 – 10 V inputfÖ Power supply

fÖ A Power supply for additionalaccessories

aBJ Central fault message/feedpump/DHW circulation pump(potential-free)

aVG KM BUS



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Digital data inputs DE1 to DE3

The following functions can be connec-ted alternatively:■ External operating program change-

over for each heating circuit■ External blocking■ External blocking with fault message

input■ External demand with minimum boiler

water temperature■ Fault message input■ Brief operation of the DHW circulation

pump

External contacts must be floating.When connecting external contacts,observe the requirements of safety cat-egory II, i.e. 8.0 mm air and creep pathor 2.0 mm insulation thickness to 'live'parts.

Input function assignment

Select the input functions by means ofcodes in the "General" group at theboiler control unit:■ DE1: Coding address 3A■ DE2: Coding address 3b■ DE3: Coding address 3C

Assigning the operating programchangeover function to the heatingcircuits

Assign the operating program change-over function for the relevant heating cir-cuit via coding address d8 in group"Heating circuit" at the boiler controlunit:■ Changeover via input DE1: Code d8:1■ Changeover via input DE2: Code d8:2■ Changeover via input DE3: Code d8:3

The effect of the operating programchangeover is selected via codingaddress d5 in the "Heating circuit"group. The duration of the changeover is set viacoding address F2 in the "Heating cir-cuit" group.

Effect of the external blocking func-tion on the pumps

The effect on the internal circulationpump is selected in coding address 3Ein the "General" group.The effect on the respective heating cir-cuit pump is selected in coding addressd6 in the "Heating circuit" group.The effect on a circulation pump for cyl-inder heating is selected in codingaddress 5E in the "DHW" group.

Effect of the external demand func-tion on the pumps

The effect on the internal circulationpump is selected in coding address 3F inthe "General" group.The effect on the respective heating cir-cuit pump is selected in coding addressd7 in the "Heating circuit" group.The effect on a circulation pump for cyl-inder heating is selected in codingaddress 5F in the "DHW" group.

DHW circulation pump runtime forbrief operation

The DHW circulation pump is started byclosing the contact at DE1, DE2 or DE3by means of a pushbutton. The runtimeis adjusted via coding address "3d" in the"General" group.



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Analogue input 0 – 10 V

The 0 – 10 V hook-up provides an addi-tional set boiler water temperature:0 – 1 V is taken as "no default for set

boiler water temperature".1 V ≙ Set value 10 °C10 V ≙ Set value 100 °CEnsure DC separation between the earthconductor and the negative pole of theon-site voltage source.

Output aBJ

The following functions can be connec-ted to output aBJ:■ Feed pump to substation

or■ DHW circulation pump

or■ Fault message facility

Function assignment

Select the function of output aBJ via cod-ing address "36" in the "General" groupat the boiler control unit.

Control functions

External heating program changeover

The "External heating program change-over" function is connected via extensionEA1. There are 3 inputs available atextension EA1 (DE1 to DE3).

The function is selected via the followingcoding addresses in the "General"group:

Heating program - changeover CodeInput DE1 3A:1Input DE2 3b:1Input DE3 3C:1

Assign the operating program change-over function for the relevant heating cir-cuit via coding address "d8" in group"Heating circuit" at the boiler controlunit:

Heating program - changeover CodeChangeover via input DE1 d8:1Changeover via input DE2 d8:2Changeover via input DE3 d8:3



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You can select which direction the heat-ing program changeover takes in codingaddress "d5" in the "Heating circuit"group:

Heating program - changeover CodeChangeover towards "Permanently reduced" or "Permanentstandby" mode (subject to the selected set value)

d5:0

Changeover towards "Constant heating mode" d5:1

The duration of the heating programchangeover is set via coding address"F2" in the "Heating circuit" group:

Heating program - changeover CodeNo operating program changeover F2:0Duration of the operating program changeover 1 to 12 hours F2:1 to

F2:12

The operating program changeoverstays enabled for as long as the contactremains closed, but at least as long asthe duration selected in coding address"F2".

External blocking

The "External blocking" and "Externalblocking and fault message input" func-tions are connected via extension EA1.There are 3 inputs available at extensionEA1 (DE1 to DE3).


External blocking CodeInput DE1 3A:3Input DE2 3b:3Input DE3 3C:3


Control functions (cont.)

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External blocking and fault message input CodeInput DE1 3A:4Input DE2 3b:4Input DE3 3C:4

The effect on the internal circulationpump is selected in coding address"3E" in group "General".

The effect on the relevant heating circuitpump is selected in coding address"d6" in group "Heating circuit".

External demand

The "External demand" function is con-nected via extension EA1. There are 3inputs available at extension EA1 (DE1to DE3).


External demand CodeInput DE1 3A:2Input DE2 3b:2Input DE3 3C:2

The effect on the internal circulationpump is selected in coding address"3F" in group "General".The effect on the relevant heating circuitpump is selected in coding address"d7" in group "Heating circuit".

The minimum set boiler water tempera-ture in case of external demand is selec-ted in coding address "9b" in group"General".

Venting program

During the venting program, the circula-tion pump will be alternately switched onand off for 30 s at a time over a period of20 min.For a certain period, the diverter valve isalternately set towards heating andDHW heating. The burner is switched offduring the venting program.

Activate venting program: See "Ventingthe heating system".



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Fill program

In the delivered condition, the divertervalve is set to its central position, ena-bling the system to be filled completely.After the control unit has been switchedon, the diverter valve no longer goes intoits central position.Afterwards, the diverter valve can bemoved via the fill function into the centralposition (see "Filling the heating sys-tem"). In this position, the control unit canbe switched off, and the system can befilled completely.

Filling with the control unit switchedon

If the system is to be filled with the controlunit switched on, the diverter valve ismoved in the fill program to its centralposition and the pump starts.When the function is enabled, the burnershuts down. The program is automati-cally disabled after 20 min.

Screed drying

When activating screed drying, observethe information provided by the screedmanufacturer.When the screed drying function is acti-vated, the heating circuit pump in theheating circuit with mixer is switched onand the flow temperature is held inaccordance with the selected profile. Oncompletion (30 days), the heating circuitwith mixer is regulated automatically viathe set parameters.Observe EN 1264. The report to be pro-vided by the heating contractor mustcontain the following heat-up details:

■ Heat-up data with respective flow tem-peratures

■ Max. flow temperature achieved■ Operating state and outside tempera-

ture during handoverThe various temperature profiles can beset via coding address "F1" in the "Heat-ing circuit" group.The function continues after power fail-ure or after the control unit has beenswitched off. "Heating and DHW" is star-ted when screed drying is finished or ifcode "F1:0" is set manually.

Temperature profile 1: (EN 1264-4) code "F1:1"

Flow

tem

pera

ture

°C

1 5 10 15 20 25 30Days

5040302010



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Temperature profile 2: (ZV parquet and flooring technology) code "F1:2"

Flow

tem

pera

ture

°C

Days

5040302010

1 5 10 15 20 25 30

Temperature profile 3: Code "F1:3"

Flow

tem

pera

ture

°C

Days

5040302010

1 5 10 15 20 25 30


Flow

tem

pera

ture

°C

Days

5040302010

1 5 10 15 20 25 30


Flow

tem

pera

ture

°C

1 5 10 15 20 25 30Days

5040302010



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Flow

tem

pera

ture

°C

1 5 10 15 20 25 30Days

5040302010

60


Flow

tem

pera

ture

°C

1 5 10 15 20 25 30Days

5040302010

Raising the reduced room temperature

During operation with reduced roomtemperature, the reduced set room tem-perature can be automatically raisedsubject to the outside temperature. Thetemperature is raised in accordance withthe selected heating curve, but no higherthan the set standard room tempera-ture.

The outside temperature limits for thestart and end of temperature raising canbe set in coding addresses "F8" and"F9" in the "Heating circuit" group.



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Example using the settings in the delivered condition

A

B

-20Outside temp. in °C

Boile

r wat

er o

rflo

w te

mpe

ratu

re in

°C 80

70

60

50

40

30

0 -5 -10 -15510

Set room temperature in °C

3530

2520

1510

50

90

A Heating curve for operation withstandard room temperature

B Heating curve for operation withreduced room temperature

Reducing the heat-up time

During the transition from operation withreduced room temperature to operationwith standard room temperature, theboiler water or flow temperature will beraised in accordance with the selectedheating curve. The boiler water or flowtemperature can be automaticallyincreased.

The value and duration of the additionalincrease in the set boiler water or flowtemperature can be set in codingaddresses "FA" and "Fb" in the "Heatingcircuit" group.



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Example using the settings in the delivered condition

10

0

20

3030

40

50

60

600 700 800 900

Set b

oile

r wat

er o

r flo

wte

mpe

ratu

re in

°C

Time in h

A

B

C

D

A Start of operation with standardroom temperature

B Set boiler water or flow temperaturein accordance with the selectedheating curve

C Set boiler water or flow temperaturein accordance with coding address"FA":50 °C + 20 % = 60 °C

D Duration of operation with raised setboiler water or flow temperature inaccordance with coding address"Fb":60 min



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The heating circuit allocation must beconfigured when commissioning theVitotrol.

Heating circuit Vitotrol configuration200A/200 RF 300A/300 RF

The remote control affects the heating circuit with-out mixer A1

H 1 HC 1

The remote control affects the heating circuit withmixer M2

H 2 HC 2

The remote control affects the heating circuit withmixer M3

H 3 HC 3

NoteOne heating circuit can be assigned tothe Vitotrol 200A/200 RF.Up to three heating circuits can beassigned to the Vitotrol 300A/300 RF.Up to 2 remote controls may be connec-ted to the control unit.If the heating circuit allocation is latercancelled, reset coding address A0 forthis heating circuit to 0 (fault messagebC, bd, bE).

Electronic combustion control unit

The electronic combustion controller uti-lises the physical correlation betweenthe level of the ionisation current and theair ratio λ. The maximum ionisation cur-rent is achieved at an air ratio of 1 for allgas qualities.The ionisation signal is evaluated by thecombustion controller and the air ratio isadjusted to a value between λ=1.24 and1.44. This range provides for an optimumcombustion quality. Thereafter, the elec-tronic gas valve regulates the requiredgas volume subject to the prevailing gasquality.

To check the combustion quality, theCO2 content or the O2 content of the fluegas is measured. The prevailing air ratiois determined with the measured values.The relationship between the CO2 or O2

content and air ratio λ is illustrated in thefollowing table.


Allocating heating circuits to the remote control

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Air ratio λ– CO2/O2 contentAir ratio λ O2 content

(%)CO2 content(%) for natu-

ral gas E

CO2 content(%) for natu-

ral gas LL

CO2 content(%) for LPG P

1.20 3.8 9.6 9.2 11.31.24 4.4 9.2 9.1 10.91.27 4.9 9.0 8.9 10.61.30 5.3 8.7 8.6 10.31.34 5.7 8.5 8.4 10.01.37 6.1 8.3 8.2 9.81.40 6.5 8.1 8.0 9.61.44 6.9 7.8 7.7 9.31.48 7.3 7.6 7.5 9.0

For optimum combustion control, thesystem regularly carries out an auto-matic self-calibration; also after a powerfailure (shutdown). For this, the combus-tion is briefly regulated to max. ionisationcurrent (corresponding to air ratio λ=1).Automatic calibration is carried outshortly after the burner start and lastsapprox. 5 s. During calibration, higherthan normal CO emissions may occurbriefly.


Electronic combustion control unit (cont.)

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A1 Main PCBX... Electrical interface§ Boiler water temperature sen-

sor

$ Only type B2KA:Outlet temperature sensor

aA Ionisation electrodeaG Flue gas temperature sensor

Designs

Connection and wiring diagram – Internal connections

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dÖ Stepper motor for diverter valvefJ Temperature limitergF Ignition unita-Ö Fan motor

a-Ö A Fan motor controlaVL Only type B2KA:

Flow switcha:Ö Modulation coil

Designs

Connection and wiring diagram – Internal… (cont.)

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A1 Main PCBA2 Power supply unitA3 Optolink

A4 Burner control unitA5 Programming unitA6 Coding card

Designs

Connection and wiring diagram – External connections

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A7 Connection adaptorA8 LON communication module

(Vitotronic 200)A9 Internal extension H1 or H2

(accessories)S1 ON/OFF switchS2 Reset buttonX... Electrical interface! Outside temperature sensor? Flow temperature sensor, low

loss header% Cylinder temperature sensor

(type B2HA)orComfort sensor (type B2KA)(plug on the cable harness)

sÖ Internal circulation pumpdG Gas solenoid valvefÖ Power supplylH Power supply for accessories

and Vitotrol 100a-Ö Fan motora-Ö A Fan motor controlaYA Gas pressure switchaVG KM BUS

Designs

Connection and wiring diagram – External… (cont.)

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The following information is required:■ Serial no. (see type plate A)■ Assembly (from this parts list)■ Position number of the individual part

within the assembly (from this partslist)

Standard parts are available from yourlocal dealer.

Parts lists

Ordering individual parts

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B

D

F E

C

A

0003

A Type plateB Casing assembly

C Heat cell assemblywith burner

D Control unit assembly

Parts lists

Overview of the assemblies57

72 9

09 G

B

Serv

ice

164

E Hydraulic assemblywith Aqua-plate

F Miscellaneous assembly

Casing

0001 Control unit support0002 Front panel0003 Viessmann logo

0004 Fixing clip (2 pce)0005 Safety guard0006 Diaphragm grommet DN 60

Parts lists

Overview of the assemblies (cont.)

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00030004

0004

0003 0002

0006

0001

0005

Heat cell

0001 Gasket DN 600002 Boiler flue connection 60/100

0003 Boiler flue connection plug0004 Flue gasket

Parts lists

Casing (cont.)

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0005 Flue gas temperature sensor0006 Heat exchanger0007 Condensate hose0008 O-ring 35.4 x 3.6 (5 pce)0009 Locking clip, condensate hose0010 Siphon0011 Condensate hose0012 Gas supply pipe retaining clip

0013 Cheese head screw M 6 x 16(5 pce)

0014 Gas supply pipe0015 Gas pipe gasket0016 Diaphragm grommet Ø 54/180017 Thermal insulation block0018 Heat exchanger mounting (set)0019 Matrix cylinder burner

Parts lists

Heat cell (cont.)

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0015

0017

00080009

00010003

0015

0019

0016

0014

0013 0012

0009

0010 0011

0008

0010

0007

0006

0017

0018

0004

0003

0005

0002

0001

Parts lists

Heat cell (cont.)

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0001 Burner gasket (wearing part)0002 Thermal insulation ring0003 Cylinder burner gauze assembly0004 Burner gauze assembly gasket0005 Ignition electrode (wearing part)0006 Ionisation electrode (wearing

part)0007 Burner door flange gasket (wear-

ing part)0008 Radial fan0009 Gas train0010 Burner door0011 Ignition unit

0012 Ionisation electrode gasket(5 pce)

0013 Ignition electrode gasket (5 pce)0014 Blade terminal0015 Mixture restrictor0016 Gas nozzle

■ 19 kW: 02 yellow■ 26 kW: 04 grey■ 35 kW: 06 black

0017 Venturi extension0018 Mounting plate, thermal insula-

tion ring (2 pce)0019 Gasket DN 65

Parts lists

Burner

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0019

00180004

0010

00010004000700120013

0007

0012

001300130005

0006

00120011

0014

0018

000800160009

00070017

0019

0015 0004

0003

0018

0002 0001

Hydraulics type B2HA

0001 Expansion vessel0002 Expansion vessel support

0003 Connection line, expansion ves-sel

Parts lists

Burner (cont.)

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0004 Clip Ø 8 (5 pce)0005 Thermal circuit breaker0006 Gasket set A 10 x 15 x 1.50007 Temperature sensor0008 Air vent valve G 3/80009 Heat exchanger connection pipe0010 Drain hose 10 x 1.5 x 15000011 O-ring 20.6 x 2.6 (set)0012 Diaphragm grommet0013 Plug-in connector retainer (set)0014 Pressure gauge0015 Heating water return connection

elbow

0016 Hose clip DN 250017 Heating water return connection

pipe0018 Heating water return connection

elbow0019 Quick-action air vent valve G 3/80020 Locking pin0021 Diaphragm grommet0022 Plug-in connector gasket (set)0023 Round sealing ring 8 x 2 (5 pce)0024 Clip Ø 10 (5 pce)0025 Aqua-plate

Parts lists

Hydraulics type B2HA (cont.)

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00080022

0024

0020

001100160020

000400060023

00110016

0006

0023

0004

0003

0006

0004

0007

0011

00080005

0022

0013

0009

0012

0024

0014 0025

0021

0011

0018

0019

0016

0017

0016

00150011

0010

0001

0002

00110016

00070005

00110004

Parts lists


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Aqua-plate type B2HA

0001 Circulation pump motor0002 Linear stepper motor0003 Return unit0004 Adaptor for stepper motor0005 Screw 50 x 14 (5 pce)0006 Heating water flow connection

pipe

0007 DHW connection pipe0008 Heating water return connection

pipe0009 Locking pin Ø 18 (5 pce)

00040003

0009

00070006

0008

0005

0001

0004

0002

Hydraulics type B2KA

0001 Expansion vessel0002 Expansion vessel support0003 Connection line, expansion ves-

sel0004 Clip Ø 8 (5 pce)

0005 Thermal circuit breaker0006 Gasket set A 10 x 15 x 1.50007 Temperature sensor0008 Air vent valve G 3/80009 Heat exchanger connection pipe

Parts lists


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0010 Drain hose 10 x 1.5 x 15000011 O-ring 20.6 x 2.6 (set)0012 Diaphragm grommet0013 Plug-in connector retainer (set)0014 Pressure gauge0015 Heating water return connection

elbow0016 Hose clip DN 250017 Heating water return connection

pipe

0018 Heating water return connectionelbow

0019 Quick-action air vent valve G 3/80020 Locking pin0021 Diaphragm grommet0022 Plug-in connector gasket (set)0023 Round sealing ring 8 x 2 (5 pce)0024 Clip Ø 10 (5 pce)0025 Aqua-plate

Parts lists

Hydraulics type B2KA (cont.)

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0020

0025

00080022

0024

001100160020

000400060023

00110016

0006

0023

0004

0003

0006

0004

0007

0011

00080005

0022

0013

0009

0012

0024

0014

0021

0011

0018

0019

0016

0017

0016

00150011

0010

0001

0002

00110016

00070005

00110004

Parts lists


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Aqua-plate type B2KA

0001 Circulation pump motor0002 Linear stepper motor0003 Return unit0004 Adaptor for stepper motor0005 Screw 50 x 14 (5 pce)0007 Flow switch0008 Water volume controller0009 Temperature sensor0010 Plate heat exchanger gasket

(set)0012 Plate heat exchanger0013 Temperature sensor NTC0014 Thermal insulation, plate heat ex-

changer

0015 Flow switch connection assem-bly

0016 Locking pin Ø 18 (5 pce)0017 Heating water flow connection

pipe0018 DHW connection pipe0019 Heating water return connection

pipe0020 Plate heat exchanger connection

elbow0021 Clip Ø 8 (5 pce)0022 Non-return valve DN 15

00080007

0004

0022

00100012

0021

00180017

0016

0020

0003

0015

0005

0008000700190004

00020001

0009

002100100013

0014

Parts lists


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0001 Control unit0002 Control unit casing back panel0003 Coding card0004 Fuse 6.3 A (slow) (10 pce)0005 Fuse holder0006 Programming unit for constant

temperature mode0007 Programming unit for weather-

compensated mode0008 LON module0009 PCB adaptor0010 Cable harness X8/X9/ionisation0011 Cable harness 100/35/54/PE

0012 Power cable, stepper motor0013 Mating plug (set)0014 Cable fixing0015 Locking bolts, left and right0017 Wireless outside temperature

sensor0018 Outside temperature sensor

(hardwired)0019 KM BUS connecting cable 1450020 Internal extension H10021 Internal extension H20022 Programming unit for room tem-

perature-dependent mode

Parts lists

Control unit

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0009

0006

0002

002000150005 0009

001900110010

0021

0003

0008

0018

0017

0014

0004

0005

0015

0015

0001

0007

0012

0022

0013

Miscellaneous

0001 Spray paint, Vitowhite0002 Touch-up paint stick, Vitowhite0003 Special grease0004 Installation and service instruc-

tions

0005 Operating instructions for con-stant temperature mode

0006 Operating instructions for weath-er-compensated mode

Parts lists

Control unit (cont.)

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0004

0005

0006

0002

0003

0001

Parts lists

Miscellaneous (cont.)

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Settings and actual values Set value Commis-sioning

Mainte-nance/Service

Date Signature Static pressure mbar

kPa≤ 57.5≤ 5.75

Supply pressure (flow pres-sure)

= for natural gas E mbarkPa

17.4-251.74-2.5

= for natural gas LL mbarkPa

17.4-251.74-2.5

= for LPG mbarkPa

42.5-57.54.25-5.75

Tick gas type Carbon dioxide contentCO2

For natural gas

■ At lower heating output % by vol. 7.5-9.5 ■ At upper heating output % by vol. 7.5-9.5 For LPG ■ At lower heating output % by vol. 8.8-11.1 ■ At upper heating output % by vol. 8.8-11.1 Oxygen content O2 ■ At lower heating output % by vol. 4.0-7.6 ■ At upper heating output % by vol. 4.0-7.6 Carbon monoxide contentCO

■ At lower heating output ppm < 1000 ■ At upper heating output ppm < 1000

Commissioning/service reports

Commissioning/service reports57

72 9

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Rated voltage 230 VRated frequency 50 HzRated current 6 ASafety category IIP rating IP X 4 D to

EN 60529Permissible ambient temperature■ During operation 0 to +40 °C■ During storage and

transport –20 to +65 °C

Electronic tempera-ture limiter setting 82 °CTemperature limitersetting 100 °C (fixed)Backup fuse (powersupply) max. 16 A

System boiler (type B2HA)Rated heating output rangeat TV/TR 50/30 °C kW 3.2 - 19

(4.8 - 19)*25.2 - 26

(8.8 - 26)*25.2 - 30

(8.8 - 30)*25.2 - 35

(8.8 - 35)*2

at TV/TR 80/60 °C kW 2.9 - 17.5(4.3 -

17.5)*2

4.7 - 24.1(8.0 -

24.1)*2

4.7 - 27.8(8.0 -

27.8)*2

4.7 - 32.2(8.0 - 32.2)*2

for DHW heating kW 2.9 - 17.5(4.3 -

17.5)*2

4.7 - 24.1(8.0 -

24.1)*2

4.7 - 27.8(8.0 -

27.8)*2

4.7 - 32.2(8.0 - 32.2)*2

Rated heat input range kW 3.1 - 17.9

(4.5 -17.9)*2

4.9 - 24.7(8.3 -

24.7)*2

4.9 - 28.5(8.3 -

28.5)*2

4.9 - 33.0(8.3 - 33.0)*2

Power consumption In the delivered con-dition

W 53 68 76 89

Maximum W 65 103 106 119Connection values relative to the max. load Natural gas E m3/h 1.89 2.61 3.02 3.49LPG P kg/h 1.40 1.93 2.23 2.58Product ID _-0085CN0050

*2 Only when operating with LPG.

Specification

Specification

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Combi boiler (type B2KA)Rated heating outputrange

at TV/TR 50/30 °C kW 5.2 - 26(8.8 - 26)*2

5.2 - 30(8.8 - 30)*2

5.2 - 35(8.8 - 35)*2

at TV/TR 80/60 °C kW 4.7 - 24.1(8.0 - 24.1)*2

4.7 - 27.8(8.0 - 27.8)*2

4.7 - 32.2(8.0 - 32.2)*2

for DHW heating kW 4.7 - 29.7(8.0 - 29.7)*2

4.7 - 30.5(8.0 - 30.5)*2

4.7 - 34.0(8.0 - 34.0)*2

Rated heat inputrange

kW 4.9 - 30.5(8.3 - 30.5)*2

4.9 - 31.3(8.3 - 31.3)*2

4.9 - 34.9(8.3 - 34.9)*2

Power consumption In the delivered condi-tion

W 68 76 89

Maximum W 114 116 126Connection values Relative to the max. load

Natural gas E m3/h 3.23 3.31 3.69LPG P kg/h 2.38 2.45 2.73DHW flow rate at 35Crise

l/min 10.6 12.3 14.3

min DHW inlet pressure bar 1 min DHW flow rate l/min 2.5 Product ID _-0085CN0050

NoteThe connection values are only for doc-umentation purposes (e.g. in the gascontract application) or to estimate asupplementary volumetric settingscheck. Due to the factory settings, thegas pressure must not be altered fromthese values. Reference: 15 °C,1013 mbar.

*2 Only when operating with LPG.

Specification

Specification (cont.)

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We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, declare as sole respon-sible body that the product Vitodens 200-W, type B2HA and B2KA, complies withthe following standards:

DIN 4753 EN 60 335-1EN 483 EN 60 335-2-102EN 625 EN 61 000-3-2EN 677 EN 61 000-3-3EN 806 EN 62 233EN 55 014

In accordance with the following Directives, this product is designated with_-0085:

92/42/EEC 2006/95/EC2004/108/EC 2009/142/EC

This product meets the requirements of the Efficiency Directive (92/42/EEC) for con-densing boilers.

Allendorf, 01 June 2012 Viessmann Werke GmbH&Co KG

Authorised signatory Manfred Sommer

Manufacturer's certificate according to the 1st BImSchV [Ger-many]

We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm that the productVitodens 200-W complies with the NOx limits specified by the1st BImSchV Paragraph 6 [Germany].

Allendorf, 01 June 2012 Viessmann Werke GmbH&Co KG

Authorised signatory Manfred Sommer

Certificates

Declaration of conformity

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AAcknowledging a fault display..........110Actuator test.....................................107Assembly.........................................162

BBoiler water temperature sensor......130Boosting DHW heating.....................141Brief scans.......................................102Burner gasket.....................................41Burner gauze assembly.....................41Burner removal..................................40

CCalling up fault messages................111Codes for commissioning...................49Coding level 1, calling up...................60Coding level 2, calling up...................73Combustion chamber, cleaning.........45Combustion controller......................156Combustion quality, checking............47Comfort sensor................................132Commissioning..................................29Condensate drain...............................43Control unit.......................................139Cylinder temperature sensor............130

DDate, setting.......................................30Diaphragm expansion vessel.............29

EElectronic combustion controller......156Expansion vessel...............................46Extension■ AM1..............................................144■ EA1...............................................146■ Internal H1....................................142■ Internal H2....................................143Extension kit for heating circuit withmixer ...............................................136External blocking..............................149External demand..............................150

FFault codes......................................112Fault history.....................................110Fault manager....................................57Fault memory...........................110, 111Fault messages, calling up..............110Faults...............................................110Fill function.......................................151Filling the system...............................29Fill water.............................................29Flow limiter.........................................46Flow temperature sensor.................130Flue gas temperature sensor...........134Function descriptions.......................139Function sequence.............................37Function testing................................107Fuse.................................................136

GGas supply pressure..........................36Gas train ...........................................36Gas type.............................................34Gas type conversion..........................35

HHeating circuit allocation..................156Heating curve.....................................54Heating curve level............................56Heating curve slope...........................56Heating output, setting.......................39Heating program changeover..........148Heating surfaces, cleaning.................45Heat-up time....................................154

IIgnition...............................................42Ignition electrodes..............................42Ionisation electrode............................42

Keyword index

Keyword index57

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LLanguage selection............................30LON....................................................57■ Fault monitoring..............................58■ Setting subscriber numbers............57■ Subscriber check............................58LON communication module..............57

MManufacturer's certificate ................182Mixer open/close..............................137

OOperating conditions, scanning........101Operating data, scanning.................101Outlet temperature sensor...............132Outside temperature sensor............129

PPlate heat exchanger.......................133

RRaising the reduced room tempera-ture...................................................153Reduced set room temperature.........56Reducing the heat-up output............153Reducing the heat-up time...............154Relay test.........................................107Remote control.................................156Removing a fault display..................110Report..............................................179Rotational direction of mixer motor■ Changing......................................137■ Checking.......................................137

SSafety chain ....................................135Screed drying...................................151Screed drying function.....................151Service, calling up..............................59Service level, calling up...................100Service menu, calling up..................100Set room temperature selection.........55Siphon..........................................33, 43Specification ....................................180Standard set room temperature.........55Static pressure...................................36Supply pressure.................................35System pressure................................29System schemes..........................49, 60

TTemperature limiter..........................135Tightness test, balanced flue system.39Time, setting......................................30

VVenting...............................................31Venting program..............................150Vitocom 200.......................................57Vitotronic 200-H.................................57Vitotronic 200-H...............................138

WWiring diagram.................................158

Keyword index

Keyword index (cont.)

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5772

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5772

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Applicability

Serial No.:7454869 7454870 7454871 74548727454873 7454874

Viessmann LimitedHortonwood 30, TelfordShropshire, TF1 7YP, GBTelephone: +44 1952 675000Fax: +44 1952 675040E-mail: [email protected]

Viessmann Werke GmbH&Co KGD-35107 AllendorfTelephone: +49 6452 70-0Fax: +49 6452 70-2780www.viessmann.com

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Documents

instructions VIESMANN Type B2HA, B2KA - Viessmann · If the boiler is operated at the same time, this can lead to reverse flow of the flue gas. Danger The simultaneous operation of