instructions Natural gas and LPG version ... - Heating systems · switch lights or electrical appli- ... Commissioning, inspection, maintenance Steps ... Overview of the assemblies

Installation and serviceinstructionsfor contractors

VIESMANN

Vitodens 200-WType B2HA, 125 and 150 kWWall mounted gas condensing boilerNatural gas and LPG version

For applicability, see the last page

VITODENS 200-W

5623 520 GB 6/2012 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 exclusivelydesigned for qualified personnel.■ Work on gas equipment must only be

carried out by a qualified 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■ all legal instructions regarding the pre-

vention of accidents,■ all legal instructions regarding envi-

ronmental protection,■ the Code of Practice of 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 Regulation

either the Building regulations, theBuilding Regulation (Scotland),Building Regulations (Northern Ire-land),

– 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.■ Never smoke. Prevent naked

flames and sparks. Neverswitch lights or electrical appli-ances ON or OFF.

■ Close the gas shut-off valve.■ Open windows and doors.■ Remove all people from the

danger zone.■ Notify your gas or electricity

supplier from outside the build-ing.

■ 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 boiler room.■ Close all doors leading to the

living space.

Working on the system

■ When using gas as fuel, also close themain gas shut-off valve and safeguardagainst unauthorised reopening.

■ Isolate the system from the power sup-ply and check that it is no longer 'live',e.g. by removing a separate fuse or bymeans of a main isolator.

■ Safeguard the system against unau-thorised reconnection.

! Please noteElectronic modules can be dam-aged by electro-static dis-charges.Touch earthed objects, such asheating or water pipes, to dis-charge static loads.

Repair work

! Please noteRepairing components which ful-fil a safety function can compro-mise the safe operation of yourheating system.Replace faulty components onlywith original Viessmann spareparts.

Ancillary components, spare andwearing parts

! Please noteSpare and wearing parts whichhave not been tested togetherwith the heating system can com-promise its function. Installingnon-authorised components andnon-approved modifications/con-version can compromise safetyand may invalidate our warranty.For replacements, use only orig-inal spare parts from Viessmannor those which are approved byViessmann.

Safety instructions

Safety instructions (cont.)

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Installation instructionsPreparing for installationProduct information.............................................................................................. 6Preparing for installation....................................................................................... 7

Installation sequenceFitting the boiler and making connections............................................................ 9Heating water side connection............................................................................. 13Flue gas connection............................................................................................. 13Condensate connection........................................................................................ 14Gas connection.................................................................................................... 15Opening the control unit casing............................................................................ 15Electrical connections........................................................................................... 17Closing the control unit casing and inserting the programming unit..................... 27

Service instructionsCommissioning, inspection, maintenanceSteps - commissioning, inspection and maintenance.......................................... 28Further details regarding the individual steps....................................................... 30

Code 1Calling up coding level 1...................................................................................... 66General/group "1"................................................................................................. 67Boiler/group "2".................................................................................................... 70DHW/group "3"..................................................................................................... 70Solar/group "4"..................................................................................................... 71Heating circuit 1, heating circuit 2, heating circuit 3/group "5"............................. 73

Code 2Calling up coding level 2...................................................................................... 80General/group "1"................................................................................................. 81Boiler/group "2".................................................................................................... 90DHW/group "3"..................................................................................................... 92Solar/group "4"..................................................................................................... 94Heating circuit 1, heating circuit 2, heating circuit 3/group "5"............................. 98

Diagnosis and service scansCalling up the service level................................................................................... 107Diagnosis.............................................................................................................. 108Checking outputs (relay test)................................................................................ 114

Index

Index

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TroubleshootingFault display......................................................................................................... 117Fault codes........................................................................................................... 119Repair................................................................................................................... 135

Function descriptionConstant temperature control unit........................................................................ 143Weather-compensated control unit...................................................................... 144Internal extensions (accessories)......................................................................... 145External extensions (accessories)........................................................................ 148Control functions.................................................................................................. 152Assigning heating circuits to the remote control................................................... 160Electronic combustion control unit........................................................................ 160

DesignsConnection and wiring diagram – internal connections ....................................... 162Connection and wiring diagram – external connections....................................... 163

Parts listsOrdering parts...................................................................................................... 165Overview of the assemblies................................................................................. 166Casing assembly.................................................................................................. 167Heat cell assembly............................................................................................... 168Burner assembly.................................................................................................. 169Hydraulic assembly.............................................................................................. 169Control unit assembly........................................................................................... 170Miscellaneous....................................................................................................... 171

Commissioning/service reports............................................................................................................................. 173

Specification....................................................................................................... 174

CertificatesDeclaration of conformity...................................................................................... 175Manufacturer's certificate according to the 1st BImSchV [Germany]................... 175

Keyword index.................................................................................................... 176

Index

Index (cont.)

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Vitodens 200-W, B2HA

Preset for operation with natural gas E and LL.For conversion to LPG P (without conversion kit), see page 37.

Conversion for other countriesThe Vitodens 200-W should generally only be delivered to those countries specifiedon the type plate. For deliveries to alternative countries, an approved contractor, onhis own initiative, must arrange individual approval in accordance with the law of theland.

Multi boiler systemIn connection with the installation of a multi boiler system observe the installationinstructions of the multi boiler system accessories.

Preparing for installation

Product information

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Dimensions and connections

! Please noteTo prevent equipment damage,

install all pipework free of loadand torque stresses.

165.5165.5

923

1440

95

689

278

905

600

P

40

200

855

1975

1950

E

LM

O

K

H

N

A

B

C

GD F

70 70195

A Safety valveB Expansion vessel connection G1C Boiler flow 7 54 mm

D Cylinder flow 7 42 mmE Gas connection R 1F Cylinder return 7 42 mm


Preparing for installation56

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G Boiler return 7 54 mmH Connection sets (accessories,

shown without the thermal insula-tion supplied)

K Cable entry area at the backL Without connection set (accesso-

ries)M With connection set (accessories)

N Recommended dimension (singleboiler system without mountingframe)

O Recommended dimension (multiboiler system and single boiler sys-tem with mounting frame)

P Condensate drain

Preparing for the boiler installation

NoteThis boiler (protection IP X4 D) isapproved for installation in wet roomsinside safety zone 1 according toDIN VDE 0100 [Germany], if hosedwater can be prevented.Observe DIN VDE 0100 [or local regula-tions].

1. Prepare the water connections. Thor-oughly flush the heating system.

2. Prepare gas connection to TRGI [orlocal regulations].

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

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

required number of conductors forthe external connections.

■ Allow all cables in area "K" to pro-trude 1400 mm from the wall.


Preparing for installation (cont.)

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Removing boiler from packaging and levelling

2x

3.

1.

2..

4.

1. Remove packing cushions and keepthem safe.They are used as a support duringlevelling.

2. Undo two screws on the underside.

3. Remove front panel.

4. Push packing cushions onto theunderside of the boiler.

Installation sequence

Fitting the boiler and making connections56

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A

5.

A 7 9 mm drilled holes for attachinglifting gear

5. ! Please noteTo prevent damage,do not level boiler withoutpacking cushions.

Level boiler with pallet.


Fitting the boiler and making connections (cont.)

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Fitting the wall mounting bracket

NoteThe enclosed screws and rawl plugs areonly suitable for concrete. For other con-struction materials, use fixings that aresuitable for 145 kg loads.

1975

Ø 12

B C

D

A

2.

1.

A Reference point: boiler top edgeB Installation template (included with

the boiler)

C Top edge finished floorD Recommendation



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Hooking the boiler into the wall mounting bracket and levellingit

1.

3.

2x

3.

2.



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A

B C D E

A Expansion vessel connectionB Boiler flow C Cylinder flow

D Cylinder return E Boiler return

NoteResidual water may escape when undo-ing the locking caps.

Flue gas connection

NoteThe labels "System certificate" and "Sko-berne GmbH flue system" enclosed withthe technical documentation may only beused in conjunction with the Viessmannflue system made by Skoberne.


Heating water side connection56

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A1. Only for open flue operation:

Remove outer gasket A (ventilationair).

2. Connect flue pipe or flue ventilationair pipe.

Flue system installation instruc-tions.

Condensate connection

Connect the condensate hose with aconstant fall and a pipe vent to the publicsewage system or to a neutralising sys-tem.


Flue gas connection (cont.)

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A

Information on operation with LPGWe recommend the installation of anexternal safety solenoid valve wheninstalling the boiler in rooms belowground level.

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

2. Carry out a tightness test.

NoteOnly use suitable and approved leakdetecting 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

Opening the control unit casing

! Please noteElectronic assemblies can bedamaged by electrostatic dis-charge.Before beginning work, touchearthed objects, such as heatingor water pipes, to discharge staticloads.


Gas connection56

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3. 2. 2x

1.

4.4x

5.


Opening the control unit casing (cont.)

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LN

230

V~23

0 V~

5

9640

4096

2035

100

1LN

X42

1

2

1

321

54 X3

LN

21

M 1~

X19

X14

A

B

21

20

L1

C

D

145 14

5

LN

M 1~

A Radio clock receiverB Heating circuit pump or boiler circuit

pumpC Vitotrol 100 UTDB (only for constant

temperature control)When making this connection,remove jumper between "1" and"L".

D Vitotrol 100 UTA (only for constanttemperature control)orVitotrol 100 UTDB-RF radio clockreceiverWhen making this connection,remove jumper between "1" and"L".


Electrical connections56

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Connections at plug 230 V~sÖ Boiler circuit pump or heating circuit

pump, variable speed with 0 - 10 Vconnection

sA Circulation pump, optional connec-tion:■ DHW circulation pump■ External heating circuit pump■ Circulation pump for cylinder

heatingfÖ Power supplylH ■ Power supply for accessories

■ External demand/blocking■ Vitotrol 100 UTA■ Vitotrol 100 UTDB■ Vitotrol 100 UTDB-RF

Connections at LV plug! Outside temperature sensor? Flow temperature sensor for low

loss header (accessories)

% Cylinder temperature sensor (partof the DHW cylinder connectionset)

aVG KM BUS subscriber (accessory)■ Vitotrol 200A or 300A remote

control■ Vitocom 100■ Extension kit for one heating cir-

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

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

Circulation pump at plug sÖ:

A 1~M

sÖL N? x4

B

A Circulation pumpB Only with variable speed heating cir-

cuit pump:Plug in 0 - 10 V connection at X4.

Rated current 2(1) A~Rated voltage 230 V~


Electrical connections (cont.)

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Circulation pump at plug sA:

A1~M

sAL N?

A Circulation pump

Rated current 2(1) A~Rated voltage 230 V~

Set function of connected componentin coding address "39"Function CodeDHW circulation pump 39:0Heating circuit pump forheating circuit without mixerA1

39:1

Circulation pump for cylinderheating (delivered condi-tion)

39:2

External demand via switching contact

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

rate installation instructions).■ Plug lH.

Connection

! Please note'Live' contacts lead to short cir-cuits or phase failure.The external connection must befloating.



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Plug lH Extension EA1

A

lHN?1 L

A Floating contactWhen making this connec-tion, remove jumper be-tween 1 and L.

B[{SDE [{DDE[{ADE

A

A Floating contactB Extension EA1

Burner operation is load-dependent if the contact is closed. The boiler water is heat-ed to the value set in coding address "9b" in group "General"/"1". The boiler watertemperature is limited by this set value and the electronic maximum limit (codingaddress "06" in group "Boiler"/"2").

Codes

Plug lH Extension EA1"4b:1" in group "General"/"1" Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in

group "General"/"1" to 2.■ Select effect of the function on the relevant heating circuit pump in coding address

"d7" in group "Heating circuit"/"5".■ Select effect of the function on the circulation pump for cylinder heating in 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

= 0-10 V

+

1 2

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).

! Please note'Live' contacts lead to short cir-cuits or phase failure.The external connection must befloating.



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Plug lH Extension EA1

A

lHN?1 L

A Floating contactWhen making this connection, re-move jumper between 1 and L.

B[{SDE [{DDE[{ADE

A

A Floating contactB Extension EA1

The burner is switched off if this contact is closed. The heating circuit pump andcirculation pump for cylinder heating are switched according to the set code (see thefollowing table "Codes").

! Please noteWhen blocked, there is no frostprotection for the heating system.

Codes

Plug lH Extension EA1"4b:2" in group "General"/"1" Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in

group "General"/"1" to 3 or 4.■ Select effect of the function on the heating circuit pump in coding address "d6" in

group "Heating circuit"/"5".■ Select effect of the function on the circulation pump for cylinder heating in coding

address "5E" in group "DHW"/"3".

Outside temperature sensor !

Fitting outside temperature sensor RF(wireless accessory):

Wireless base station



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Fitting location for outside tempera-ture sensor

■ North or north-westerly wall, 2 to2.5 m above ground level; in multistorey buildings, in the top half of thesecond floor

■ Not above windows, doors or vents

■ Not immediately below balconies orgutters

■ Never render over

Outside temperature sensor connec-tion

2-core lead, length up to 35 m with across-section of 1.5 mm2

Power supply for accessories at plug lH

230 V~Where the boiler is installed in a wetarea, the connection of accessories tothe power supply must not be carried outat the control unit. The power supplyconnection for accessories can be madeimmediately at the control unit, if theboiler is installed outside wet areas. Thisconnection is switched directly with theON/OFF switch 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).



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Connection of accessories

Power supply of all accessories via the boiler control unit

145

145

40 A

40 145

145

40 A

40

B 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

A14

514

5

40 A

40

D

E

A Boiler 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

If the current flowing to the connectedworking parts (e.g. circulation pumps) ishigher than the safety level of the acces-sory, the output concerned should onlybe used to control an on-site relay.

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



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Power supply fÖ

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

■ Install an isolator in the power cablewhich simultaneously separates allnon-earthed conductors from themains with contact separation of atleast 3 mm.Furthermore, we recommend instal-ling an AC/DC-sensitive RCD (RCDclass B ) for DC (fault) currentsthat can occur with energy efficientequipment.

■ Max. fuse rating 16 A.



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Routing the connecting cables

! Please noteIf connecting cables touch hot components they will be damaged. When routing and securing connecting cables on site, ensure that the maxi-mum permissible temperatures for these cables are not exceeded.

5

A Low voltage connectionsB 230 V connectionsC Internal extensionD Main PCBE Communication module

F Cable grommet for power cable% Plugs for connecting the cylinder

temperature sensor to the cable har-ness

Remove the existing cable grommetwhen using larger cross-sections (up to7 14 mm). Secure the cable with thecable grommet plugged into the lowercasing section F (black).



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1.

3. 2x2.

4.

4.

6.

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

NoteThe programming unit can also behoused in a wall mounting base (acces-sory) near the boiler.

Wall mounting base installationinstructions


Closing the control unit casing and inserting the programming unit

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

Commissioning steps

Inspection steps

Maintenance steps Page

• • • 1. Opening the boiler.......................................................... 30

• 2. Filling the heating system.............................................. 31

• 3. Selecting the language (if necessary) - only forweather-compensated control units............................. 32

• • 4. Setting the time and date (if required) - only forweather-compensated control units............................. 33

• 5. Venting the boiler........................................................... 34

• 6. Venting the heating system........................................... 35

• 7. Filling the siphon with water......................................... 35

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

• 9. Checking the power supply

• 10. Designating heating circuits - only for weather-compensated control units............................................ 36

• • 11. Checking the gas type.................................................... 36

• 12. Gas type conversion (only for operation with LPG).... 37

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

• • • 14. Checking the static and supply pressure..................... 39

• 15. Maximum output setting................................................ 41

• 16. Checking the balanced flue system for tightness(annular gap check)........................................................ 42

• • 17. Removing the burner and checking the burner gasket 43

• • 18. Checking the burner gauze assembly & replacing ifrequired........................................................................... 44

• • 19. Checking the flue gas non-return device..................... 45

• • 20. Checking and adjusting the ignition and ionisationelectrodes........................................................................ 46

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

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Commissioning steps

Inspection steps

Maintenance steps Page

• • 21. Cleaning the combustion chamber/heat exchangerand installing the burner................................................ 47

• • 22. Checking the condensate drain and cleaning thesiphon.............................................................................. 48

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

• • 24. Checking the diaphragm expansion vessel andsystem pressure............................................................. 48

• • • 25. Checking the function of safety valves

• • • 26. Checking firm seating of electrical connections

• • • 27. Checking all gas equipment for tightness at operatingpressure .......................................................................... 49

• • • 28. Checking combustion quality........................................ 49

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

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

• 31. Matching the control unit to the heating system ........ 51

• 32. Adjusting the heating curves (only for weather-compensated control units)........................................... 58

• 33. Connecting the control unit to the LON....................... 61

• 34. Calling up and resetting the "Service" display............ 62

• • • 35. Fitting the front panel..................................................... 64

• 36. Instructing the system user........................................... 65


Steps - commissioning, inspection and… (cont.)

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Opening the boiler

2x

2.

1.

4.

3.


Further details regarding the individual steps

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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

kW < 20 l/kW ≥ 20 l/kW to< 50 l/kW

≥ 50 l/kW

≤ 50 ≤ 3.0 mol/m3

(16.8 °dH)≤ 2.0 mol/m3

(11.2 °dH)< 0.02 mol/m3

(0.11 °dH)> 50 to ≤ 200 ≤ 2.0 mol/m3

(11.2 °dH)≤ 1.5 mol/m3

(8.4 °dH)< 0.02 mol/m3

(0.11 °dH)> 200 to ≤ 600 ≤ 1.5 mol/m3

(8.4 °dH)≤ 0.02 mol/m3

(0.11 °dH)< 0.02 mol/m3

(0.11 °dH)> 600 < 0.02 mol/m3

(0.11 °dH)< 0.02 mol/m3

(0.11 °dH)< 0.02 mol/m3

(0.11 °dH)


Further details regarding the individual steps (cont.)

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A

1. Check the pre-charge pressure of thediaphragm expansion vessel.

2. Close the gas shut-off valve.

3. Connect the supply hose to boilerdrain & fill valve A.

4. Fill the heating system via boiler drain& fill valve A. (minimum systempressure > 1.0 bar).Permiss. operating pressure: 6 bar.

5. Close boiler drain & fill valve A.

Selecting the language (if necessary) - only for weather-com-pensated control units

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

Extended menu:

1. å

2. "Settings"

3. "Language"

Sprache

Cesky CZDeutsch DE

DanskEnglish

DKGB

Wählen mit Ø

ç

4. Set the required language with / .



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Setting the time and date (if required) - only for weather-com-pensated control units

During commissioning, or after pro-longed time out of use, the time and dateneed to be reset.

Extended menu:

1. å

2. "Settings"

3. "Time / Date"

4. Set current time and date.

NoteWhen time and date have been set, thecontrol unit automatically checks thefunction of the flue gas temperature sen-sor. The display shows: "Test flue gastemp sensor" and "Active".For further details regarding the flue gastemperature sensor test, seepage 139.



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Venting the boiler

B

A

1. Close the shut-off valves on the heat-ing water side.

2. Connect the supply hose to boilerdrain & fill valve A.

3. Plug the drain hose onto top tap Band connect to a drain.

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

5. Close taps A and B, open the shut-off valves on the heating water side.

6. Remove hoses again.



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Venting the heating system

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

2. Activate venting program (see nextsteps).

NoteFor function and sequence of theventing program, see page 154.

3. Check the system pressure.

Activating the venting function

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

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

Venting function is enabled.4. Ending venting function:

Press OK or ä.

Service menu1. Press OK and å simultaneously for

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

E

F

C

D

A

B

1. Pull off cap A downwards.

2. Undo hose B.

3. Undo union nut C and pull off siphonD downwards.

4. Fill siphon D with water and refit it.

5. Refit hose B.

6. Push on cap A from below.



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Designating heating circuits - only for weather-compensatedcontrol units

In the delivered condition, the heatingcircuits are designated "Heating circuit1", "Heating circuit 2" and "Heating cir-cuit 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.■ Consequently, for natural gas there is

no adjustment required across theentire 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 37).

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 37).

3. Record the gas type in the report onpage 173.



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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. Switch ON/OFF switch "8" on.

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

pensated control unit)orGroup "1" (constant temperaturecontrol unit)

■ In coding address "11", selectvalue "9"

■ In coding address "82", selectvalue "1" (LPG operation)

■ In code "11", select value ≠ "9".■ End service functions.

4. Open the gas shut-off valve.

5. Affix label "G 31" (included with thetechnical documentation) in a clearlyvisible position, near the gas train onthe cover panel.

Function sequence and possible faults

Display Measures Control unit is-

sues a heat de-mand

no Increase set valueand ensure heat isdrawn off

yes

Fan starts no After approx. 51 sfault F9

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



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yes

Ignition no Fault EE Check the ignitionmodule (controlvoltage 230 Vacross plugs"X2.1" and "X2.2")

yes

Gas train opens no Fault EE Check the gas train(control voltage230 V); check thegas supply pres-sure

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 gassystem for tight-ness (flue gas re-circulation), checkthe gas flow pres-sure



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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 sys-tem; remedy fluegas recirculation ifrequired.Press reset buttonR.

For further details regarding faults, seepage 117.

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 supply line thoroughly afterflushing.



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A

1. Close the gas shut-off valve.

2. Undo screw A inside test nipple"PE" on the gas train, but do notremove it, and connect the pressuregauge.

3. Open the gas shut-off valve.

4. Check the static pressure and recordthe value in the report on page 173.

Set value: max. 57.5 mbar.

5. Start the boiler.

NoteDuring commissioning, the boiler canenter a fault state because of airlocksin the gas line. After approx. 5 s,press R to reset the burner.

6. Check the supply (flow) pressure. Setvalues:■ Natural gas 20 mbar■ LPG 50 mbar

NoteUse a suitable measuring device witha resolution of at least 0.1 mbar tomeasure the supply pressure.

7. Record the actual value in the servicereport.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.



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

Open the gas shut-off valve, start theboiler and check for tightness at testnipple A.

Supply (flow) pres-sure for naturalgas

Supply (flow)pressure for LPG

Action

below 15 mbar below 42.5 mbar Do not start the boiler. Notify your gassupply utility or LPG supplier.

15 to 25 mbar 42.5 to 57.5 mbar Start the boiler.above 25 mbar above 57.5 mbar Install a separate gas pressure governor

upstream of the system and regulate thepre-charge pressure to 20 mbar for natu-ral gas or 50 mbar for LPG. Notify yourgas supply utility or LPG supplier.

Maximum output setting

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

Weather-compensated control unit:

1. Press OK and å simultaneouslyfor approx. 4 s.

2. "Service functions"

3. "Max. output"

4. "Change?" Select "Yes".A value appears on the display (e.g."85"). In the delivered condition, thisvalue represents 100 % of rated heat-ing output.

5. Set the required value.

Constant temperature control unit:




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2. Select "3" with Ú and confirm withOK.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 confirmwith OK.

Checking the balanced flue system for tightness (annular gapcheck)

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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Removing the burner and checking the burner gasket

A

B

C

D

E

F

G

H

K

1. Switch OFF the main power supplyand the ON/OFF switch at the controlunit.

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

3. Unlock control unit A and pivot for-wards.

4. Remove cover panel B.

5. Pull cables from fan motor C, gastrain D, ignition unit E and ionisa-tion electrode F.

6. Undo gas supply pipe fitting G.

7. Undo six screws H and remove theburner.

! Please noteTo prevent damage,never touch the mesh of theburner gauze assembly.



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8. Check burner gasket K for damage.Replace gasket if required.

Checking the burner gauze assembly & replacing if required

C B6xEF D4x

A

1. Remove electrodes A.

2. Undo six retaining clips B on ther-mal insulation ring C and thenremove thermal insulation ring C.

3. Undo four Torx screws D andremove burner gauze assembly Ewith burner gauze assembly gasketF.



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4. Insert new burner gauze assemblyE with new gasket F and securewith four Torx screws.Torque: 4.0 Nm

5. Refit thermal insulation ring C andelectrodes A.

Checking the flue gas non-return device

B

A

1. Undo three screws and remove fanA.

2. Remove flue gas non-return deviceB.



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3. Check the damper and gasket for dirtand damage. Replace as neces-sary.

4. Refit flue gas non-return device B.

5. Refit fan A and secure with threescrews.Torque: 3.0 Nm.

Checking and adjusting the ignition and ionisation electrodes

14±16+20 4+0

,5 0

A A B

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.

! Please noteDo not damage the mesh oftheburner gauze assembly.

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 the elec-trode fixing screws with 3 Nm.



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Cleaning the combustion chamber/heat exchanger and installingthe burner

A

1. ! Please noteScratches on parts that are incontact with flue gas can leadto corrosion.Never use brushes to cleanthe heating surface.

Use a vacuum cleaner to remove res-idues from heat exchanger A in thecombustion chamber.

2. If necessary, spray slightly acidic,chloride-free cleaning agents basedon phosphoric acid onto heatexchanger A and let the solutionsoak in for at least 20 min.

3. Thoroughly flush heat exchanger Awith water.

4. Install the burner and torque thescrews diagonally with 8.5 Nm.

5. Fit the gas supply pipe with a newgasket. Torque fittings with 15 Nm.



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6. Check the gas connections for tight-ness.

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

7. Connect the electrical cables/leads tothe corresponding components.

Checking the condensate drain and cleaning the siphon

NoteIf condensate escapes at vent apertureA or B, clean or (if necessary) replacethe following drain line.

E

F

C

D

A

B

1. Pull off cap C downwards.

2. Undo hose D.

3. Undo union nut E and pull siphonF downwards.

4. Clean siphon F.

5. Check that the condensate can drainfreely to the public sewage system.

6. Fill siphon F with water and reas-semble.

7. Refit hose D.

8. Push on cap C from below.

Checking the diaphragm expansion vessel and system pressure

NoteCarry out this test on a cold system.

1. Drain the system or close the capvalve on the diaphragm expansionvessel and reduce the pressure untilthe pressure gauge indicates "0".



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2. If the pre-charge pressure of the dia-phragm expansion vessel is lowerthan the static system pressure, topup with nitrogen until the pre-chargepressure is raised by 0.1 to 0.2 bar.

3. Top up with water until the chargepressure of the cooled system is 0.1to 0.2 bar higher than the pre-chargepressure of the diaphragm expansionvessel. Permiss. operating pressure: 6 bar.

Checking all gas equipment for tightness at operating pressure

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

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

Checking combustion quality

The electronic combustion controllerautomatically ensures optimum combus-tion quality. During commissioning/maintenance, only the combustion val-ues need to be checked. For this, meas-ure the CO content plus the CO2 or O2

content. For a description of the elec-tronic combustion controller functions,see page 160.

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

CO content■ The CO content must be < 1000 ppm

for all gas types.

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

following limits (upper and lower out-put):– 7.5 to 9.6 % for natural gas E and LL– 9.0 to 11.3 % for LPG P

■ For all gas types, the O2 content mustbe between 3.8 and 7.3 %.

If the actual CO2 or O2 values lie outsidetheir respective ranges, check the bal-anced flue system for tightness, seepage 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 50).

4. Check the CO2 content. Should theactual value deviate from the afore-mentioned ranges by more than 1 %,implement steps from page 49.

5. Enter actual values into the report.

6. Select the upper output (seepage 50).

7. Check the CO2 content. Should theactual value deviate from the afore-mentioned ranges by more than 1 %,implement steps from page 49.

8. After testing, press OK.

9. Enter actual values into the report.

Select higher/lower heating output

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

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.

Service menu1. Press OK and å simultaneously for

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 matched to theequipment level of the system. Varioussystem components are recognisedautomatically by the control unit and therelevant codes are adjusted automati-cally.

■ For the selection of an appropriatescheme, see the following diagrams.

■ For coding steps, see page 66.

System version 1

One heating circuit without mixer A1, with/without DHW heating, with low lossheader

1

2

34

6

5

9

qP

8

7

ID: 4605139_1103_02

1 Vitodens 200-W2 Outside temperature sensor (only

for weather-compensated controlunits)orVitotrol 100 (only for constant tem-perature control units)

3 Boiler circuit pump

4 Circulation pump for cylinder heat-ing

5 DHW cylinder6 Cylinder temperature sensor7 Heating circuit without mixer A1

(heating circuit 1)8 Heating circuit pump A19 Low loss header



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qP Flow temperature sensor, low lossheader

Function/system components CodeAdjust Group

Operation with LPG 82:1 "General"/1System with low loss header and without DHW circu-lation pump:

Heating circuit pump A1 connection at internal exten-sion H1 or H2

53:2 "General"/1

System with low loss header and with DHW circula-tion pump:

Heating circuit pump A1 connection at extensionAM1, terminal A1

— "General"/1

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

— "General"/1

System with low loss header 04:0 "Boiler"/1



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System version 2

One heating circuit with mixer M2, with/without DHW heating, with low lossheader

1

2

4qW

qE

3

M

7

8

qP

qQ

9

6

5

ID: 4605140_1103_02

1 Vitodens 200-W2 Outside temperature sensor3 Boiler circuit pump4 Circulation pump for cylinder heat-

ing5 DHW cylinder6 Cylinder temperature sensor7 Heating circuit with mixer M2 (heat-

ing circuit 2)8 Temperature limiter to restrict the

maximum temperature of underfloorheating systems

9 Flow temperature sensor M2qP Heating circuit pump M2qQ Extension kit for one heating circuit

with mixer M2qW Low loss headerqE Flow temperature sensor, low loss

header



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

■ with DHW cylinder 00:4 "General"■ without DHW cylinder 00:3 "General"System with DHW circulation pump DHW circulation pump connection at internal exten-sion H1 or H2

— "General"

System with low loss header 04:0 "Boiler"

System version 3

One heating circuit with mixer M2, with system separation, with/without DHWheating

1

6

5

2

4

M

7

8

qP

qQ

qP

qW

9

3

ID: 4605141_1103_02

1 Vitodens 200-W2 Outside temperature sensor3 Boiler circuit pump

4 Circulation pump for cylinder heat-ing

5 DHW cylinder6 Cylinder temperature sensor



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7 Heating circuit with mixer M2 (heat-ing circuit 2)

8 Temperature limiter to restrict themaximum temperature of underfloorheating systems

9 Flow temperature sensor M2

qP Heating circuit pump M2qQ Heat exchanger for system separa-

tionqW 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 00:4 "General"■ without DHW cylinder 00:3 "General"System with DHW circulation pump DHW circulation pump connection at internal exten-sion H1 or H2

— "General"



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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)

1

6

5

M

qI

qO

8

7qE

qZ

qU

2

34

qT

MqW

qQ

qP

9qR

ID: 4605142_1103_02

1 Vitodens 200-W2 Outside temperature sensor3 Boiler circuit pump4 Circulation pump for cylinder heat-

ing5 DHW cylinder6 Cylinder temperature sensor7 Heating circuit without mixer A1

(heating circuit 1)8 Heating circuit pump A19 Heating circuit with mixer M2 (heat-

ing circuit 2)qP Flow temperature sensor M2qQ Heating circuit pump M2

qW Extension kit for one heating circuitwith mixer M2

qE Heating circuit with mixer M3 (heat-ing circuit 3)

qR Temperature limiter to restrict themaximum temperature of underfloorheating systems

qT Flow temperature sensor M3qZ Heating circuit pump M3qU Extension kit for one heating circuit

with mixer M3qI Low loss headerqO 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 heating circuit with mixer (withoutunregulated heating circuit)

■ with DHW cylinder 00:8 "General"■ without DHW cylinder 00:7 "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

— "General"

DHW circulation pump connection at extension AM1,terminal A2

— "General"

System with low loss header 04:0 "Boiler"

System version 5

Multi boiler system with several heating circuits with mixer and low loss header(with/without DHW heating)

1

4

6

5

M M

1

4

7qU

qI

qQ

qP

9

832 qW

qEqR

qT

qZ

ID: 4605016_1103_04



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1 Vitodens 200-W2 Vitotronic 300-K3 Outside temperature sensor4 Boiler circuit pump5 DHW cylinder6 Cylinder temperature sensor7 Circulation pump for cylinder heat-

ing8 Heating circuit with mixer M2 (heat-

ing circuit 2)9 Flow temperature sensor M2qP Heating circuit pump M2qQ Extension kit for one heating circuit

with mixer M2

qW Heating circuit with mixer M3 (heat-ing circuit 3)

qE Temperature limiter to restrict themaximum temperature of underfloorheating systems

qR Flow temperature sensor M3qT Heating circuit pump M3qZ Extension kit for one heating circuit

with mixer M3qU Low loss headerqI Flow temperature sensor, low loss

header

Required codes AddressMulti boiler system with Vitotronic 300-K 01:2

NoteCodes for multi boiler system, seeVitotronic 300-K installation and serviceinstructions

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 room temperature, in turn, dependson the boiler water or flow 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. When theheating circuit pump logic function hasbeen enabled, the curve modifies thestarting and stopping characteristics ofthe heating circuit pump.

Standard set room temperature

90

-2026 + 20

A

C

D E

B

Example 1: Change in the standard setroom 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: Change in the reduced setroom temperature from 5 °C to 14 °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 thesystem requirements.



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Connecting the control unit to the LON

The LON communication module mustbe plugged in.

NoteThe data transfer via the LON can takeseveral minutes.

Single boiler system withVitotronic 200-H and Vitocom 300(example)

Set the LON subscriber numbers andfurther functions via code 2 in group"General" (see following table).

NoteIn the LON system, the same subscribernumber cannot be allocated twice.Only one Vitotronic may be program-med as fault manager.

Boiler control unit Vitotronic 200-H Vitotronic 200-H Vitocom

LON LON LON

Subscriber no. 1Code "77:1"

Subscriber no. 10Code "77:10"

Subscriber no. 11Set code "77:11"

Subscriber no.99

Control unit is faultmanagerCode "79:1"

Control unit is notfault managerCode "79:0"

Control unit is notfault managerCode "79:0"

Device is faultmanager

Control unit transmitsthe timeCode "7b:1"

The control unit re-ceives the timeSet code "81:3"

The control unit re-ceives the timeSet code "81:3"

Device re-ceives thetime

Control unit transmitsoutside temperatureSet code "97:2"

Control unit receivesoutside temperatureSet code "97:1"

Control unit receivesoutside temperatureSet code "97:1"

—

LON subscriber faultmonitoringCode "9C:20"



—



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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")■ The LON subscriber number must be

programmed in all control units (seepage 61)

■ The LON subscriber list in the faultmanager must be up to date (seepage 61)

Carry out subscriber check:



3. "Subscriber check"

4. Select subscriber (e.g. subscriber10).The subscriber check for the selectedsubscriber is initiated.■ Successfully tested subscribers

are designated with "OK".■ Unsuccessfully tested subscribers

are designated with "Not OK".

NoteTo carry out a new subscriber check,create a new subscriber list withmenu item "Delete list?"

NoteIf the subscriber check is carried outby another control unit, the sub-scriber number and "Wink" appearon the display for approx. 1 min.

Calling up and resetting the "Service" display

The red fault indicator flashes when thelimits set in coding address "21" and"23" in group "Boiler" have beenreached.

The following appears on the program-ming unit display:■ On a constant temperature control

unit:The specified hours run or the speci-fied interval with calendar symbol"ý" (subject to setting) and "¸"

■ On a weather-compensated controlunit:"Service" and "¸"

Acknowledging and resetting service

Press OK to acknowledge a servicemessage.

NoteAn acknowledged service message thatwas not reset reappears:■ On a weather-compensated control

unit, on the following Monday.■ On a constant temperature control

unit, after seven days.



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After a service has been carried out(resetting service)

Weather-compensated control unit



3. "Service reset"

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

Constant temperature control unit

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

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



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Fitting the front panel

2x

1.

2.

NoteEnsure the locking screws are fittedbefore operating.



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Instructing the system user

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



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Calling up coding level 1

Note■ On weather-compensated control

units, 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.



2. "Coding level 1"

3. Select group of required codingaddress:■ "General"■ "Boiler"■ "DHW"■ "Solar"■ "Heating circuit 1/2/3"■ "All codes std device"

In this group, all coding addressesfrom coding level 1 (except the cod-ing addresses from the "Solar"group) are displayed in ascendingorder.

4. Select coding address.

5. Select value according to the follow-ing tables and confirm with OK.

6. If you want to reset all codes totheir delivered condition:Select "Standard setting" in "Cod-ing level 1".

NoteThis also resets codes at coding level2.



2. Select "1" with Ú for coding level 1and confirm with OK."I" flashes on the display for the cod-ing addresses in group 1.

3. Select the group for the required cod-ing address with V/v:1: "General"2: "Boiler"3: "DHW"4: "Solar"5: "Heating circuit 1"6: "All codes std device"

In this group, all coding addressesare displayed in ascending order.

Confirm selected category with OK.

4. Select coding address with V/v.

Code 1


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5. Set value according to the followingtables with V/v and confirm withOK.

6. If you want to reset all codes totheir delivered condition:Select "7" with Ú and confirm withOK.When " " flashes, confirm with OK.


General/group "1"

Select "General" for weather-compensated control units (see page 66).Select "1" for constant temperature control units (see page 66).

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 (heating circuit 2), with DHWheating

5 4 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 4 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.)

5623

520

GB

Serv

ice

68

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 changeInternal circulation pump function51:0 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 when run-on time ex-pires.

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 when run-on time ex-pires.

Code 1

General/group "1" (cont.)

5623

520

GB

69

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


5623

520

GB

Serv

ice

70

Select "Boiler" for weather-compensated control units (see page 66).Select "2" for constant temperature control units (see page 66).

Coding

Coding in the delivered condition Possible changeSingle/multi boiler system01:1 Single boiler system (only

for constant temperaturecontrol units)

01:2 Multi boiler system withVitotronic 300-K

Boiler number07:1 Boiler number in multi

boiler systems (only forconstant temperaturecontrol units)

07:2to07:8

Boiler number 2 to 8 in mul-ti boiler systems

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

run) selected21:1to21:100

Number of hours run be-fore the burner should beserviced is adjustable from100 to 10,000 hOne adjusting step ≙100 h

Service interval in months23:0 No time interval for burn-

er service23:1to23:24

Interval adjustable from 1to 24 months

Service status24:0 No "Service" display 24:1 "Service" display (the ad-

dress is automatically setand must be manually re-set after a service has beencarried 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-compensated control units (see page 66).Select "3" for constant temperature control units (see page 66).

Code 1

Boiler/group "2"

5623

520

GB

71

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 ongas condensing combiboilers.

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" in accordance withthe time program (only forweather-compensatedcontrol units)

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-compensated control units (see page 66).Select "4" for constant temperature control units (see page 66).

NoteThe solar group is only displayed if a solar control module, type SM1, is connected.

Code 1

DHW/group "3" (cont.)

5623

520

GB

Serv

ice

72

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.

Cylinder 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.

Code 1

Solar/group "4" (cont.)

5623

520

GB

73

Coding in the delivered condition Possible changeExtended 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.

Heating circuit 1, heating circuit 2, heating circuit 3/group "5"

Select "Heating circuit ..." for weather-compensated control units (see page 66).Select "5" for constant temperature control units (see page 66).

Code 1


5623

520

GB

Serv

ice

74

Coding

Coding in the delivered condition Possible changePriority DHW heatingA2:2 Cylinder priority applica-

ble to heating circuitpump and mixer

A2:0 Without cylinder priority ap-plied to heating circuitpump and mixer

A2:1 Cylinder priority only appli-cable to mixer

A2:3toA2:15

Reduced priority applied tomixer (the heating circuitreceives a reduced amountof energy)

Economy function outside temperatureA5:5 With heating circuit pump

logic function (economymode): 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 1, heating circuit 2, heating… (cont.)

5623

520

GB

75

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

tion disabled (only forweather-compensatedcontrol units)

A6:5toA6:35

Extended economy func-tion enabled, i.e. the burnerand heating circuit pumpwill stop and the mixerclose 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 a weath-er-compensated controlunit and heating circuitwith mixer)

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

tempting to close for lon-ger than 20 min.

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

control function■ If there is a risk of frost

Pump idle time, transition reduced mode 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.

Code 1


5623

520

GB

Serv

ice

76

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

Heating circuit pump logicfunction, see the followingtable:

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


5623

520

GB

77

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 changeoverchanges 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 changesto "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



Screed dryingF1:0 Screed drying function

disabled (only for weath-er-compensated controlunits).

F1:1toF1:6

Screed drying adjustable inaccordance with 6 selecta-ble temperature/time pro-files (see page 154)

F1:15 Constant flow temperature20 °C

Party mode time limitF2:8 Time limit for party mode

or external heating pro-gram changeover viapushbutton: 8 h (only forweather-compensatedcontrol units)*1

F2:0 No time limit for partymode*1

F2:1toF2:12

Time limit adjustable from 1to 12 h*1

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

Code 1


5623

520

GB

Serv

ice

78

Coding in the delivered condition Possible changePump control in only DHW modeF6:25 In the "Only DHW" oper-

ating mode, the circula-tion pump in the heatingcircuit connection set ispermanently on (only forconstant temperaturecontrol units)

F6:0 In the "Only DHW" operat-ing mode, the circulationpump in the heating circuitconnection set is perma-nently off

F6:1toF6:24

In the "Only DHW" operat-ing mode, the circulationpump in the heating circuitconnection set will be star-ted 1 to 24 times per day for10 min each time.

Pump control in standby modeF7:25 In the "Standby" operat-

ing mode, the circulationpump in the heating cir-cuit connection set is per-manently on (only forconstant temperaturecontrol units)

F7:0 In the "Standby" operatingmode, the circulation pumpin the heating circuit con-nection set is permanentlyoff

F7:1toF7:24

In the "Standby" operatingmode, the circulation pumpin the heating circuit con-nection set will be started 1to 24 times per day for10 min each time.

Start temperature raisingF8:-5 Temperature limit for ter-

minating the reducedmode -5 ºC; see exampleon page 157.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 reduced set roomtemperature -14 ºC; seeexample on page 157.(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

Code 1


5623

520

GB

79

Coding in the delivered condition Possible changeSet flow temperature increaseFA:20 Raising the set boiler wa-

ter temperature or the setflow temperature whenchanging from operationwith reduced room tem-perature to operation withstandard room tempera-ture, by 20 %. See exam-ple on page 158 (only forweather-compensatedcontrol units).

FA:0toFA:50

Temperature rise adjusta-ble from 0 to 50 %

Duration set flow temperature increaseFb:30 Duration for raising the

set boiler water tempera-ture or the set flow tem-perature (see coding ad-dress "FA") 60 min. Seeexample on page 158(only for weather-com-pensated control units).

Fb:0toFb:150

Duration adjustable from 0to 300 min;1 step ≙ 2 min

Code 1


5623

520

GB

Serv

ice

80


Note■ At coding level 2, all codes are acces-

sible, including the codes at codinglevel 1.

■ 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.



2. Press OK and ä simultaneously forapprox. 4 s.

3. "Coding level 2"

4. Select group of required codingaddress:■ "General"■ "Boiler"■ "DHW"■ "Solar"■ "Heating circuit 1/2/3"■ "All codes std device"

In this group, all coding addresses(except the coding addresses fromthe "Solar" group) are displayed inascending order.

5. Select coding address.

6. Select value according to the follow-ing tables and confirm with "OK".

7. If you want to reset all codes totheir delivered condition:Select "Standard setting" in "Cod-ing level 2".




2. Press OK and ä simultaneously forapprox. 4 s.

3. Select "2" with Ú for coding level 2and confirm with OK."I" flashes on the display for the cod-ing addresses in category 1.

Code 2


5623

520

GB

81

4. Select the group for the required cod-ing address with V/v:1: "General"2: "Boiler"3: "DHW"4: "Solar"5: "Heating circuit 1"6: "All codes std device"

In this group, all coding addressesare displayed in ascending order.

Confirm selected category with OK.

5. Select coding address with V/v.

6. Set value according to the followingtables with V/v and confirm withOK.

7. If you want to reset all codes totheir delivered condition:Select "7" with Ú and confirm withOK.When " " flashes, confirm with OK.


General/group "1"

Select "General" for weather-compensated control units (see page 80).Select "1" for constant temperature control units (see page 80).

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 (heating circuit 2), with DHWheating

5 4 One heating circuit without mixer A1 (heating circuit 1) andone heating circuit with mixer M2 (heating circuit 2), withoutDHW heating (code is adjusted automatically)

Code 2

Calling up coding level 2 (cont.)

5623

520

GB

Serv

ice

82

Valueaddress00: ...

Systemversion

Description

6 4 One heating circuit without mixer A1 (heating circuit 1) andone heating circuit with mixer M2 (heating circuit 2), with DHWheating (code is adjusted automatically)

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:1 With flow sensors (do notadjust)

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

Code 2


5623

520

GB

83

Coding in the delivered condition Possible change33:2 Function output A1: Circu-

lation pump for cylinderheating

34:0 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

39:2 Function output sA: Cir-culation pump for cylinderheating

39:0 Function output sA: DHWcirculation pump

39:1 Function output sA: Heat-ing circuit 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

Code 2


5623

520

GB

Serv

ice

84

Coding in the delivered condition Possible change3A:6 Function input DE1: Brief

operation, DHW circulationpump (pushbutton func-tion).DHW circulation pump run-time adjustment: Codingaddress 3d

3b: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

Code 2


5623

520

GB

85

Coding in the delivered condition Possible change3C:2 Function input DE3: Exter-

nal demand with set flowtemperature.Flow temperature setting:Coding address 9b.Internal circulation pumpfunction: Coding address3F

3C: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 Boiler circuit pump staysin control mode on "Ex-ternal blocking" signal

3E:1 Boiler circuit pump is stop-ped on "External blocking"signal

3E:2 Boiler circuit pump is star-ted on "External blocking"signal

3F:0 Boiler circuit pump staysin control mode on "Ex-ternal demand" signal

3F:1 Boiler circuit pump is stop-ped on "External demand"signal

Code 2


5623

520

GB

Serv

ice

86

Coding in the delivered condition Possible change3F:2 Boiler circuit pump is star-

ted on "External demand"signal

4b:0 Function input lH: Roomthermostat (Vitotrol 100)for constant temperaturecontrol

4b:1 External demand4b:2 External blocking

51:0 System with low lossheader: Boiler circuit pump is al-ways started when thereis a heat demand

51:1 System with low loss head-er: When there is heat de-mand, the boiler circuitpump will only be started ifthe burner is running.Circulation pump is switch-ed off when run-on time ex-pires.

51:2 System with heating waterbuffer cylinder: When there is heat de-mand, the boiler circuitpump will only be started ifthe burner is running.Circulation pump is switch-ed off when run-on time ex-pires.

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)

Code 2


5623

520

GB

87

Coding in the delivered condition Possible change54:3 With solar control module

SM1 without auxiliary func-tion (automatic recogni-tion)

54:4 With solar control moduleSM1 with auxiliary function,e.g. central heating backup(automatic recognition)

6E:50 No correction of meas-ured outside tempera-ture

6E:0to6E:100

Outside temperature cor-rection in 0.1 K steps0 to 49 = -5 K to -0.1 K51 to 100 = 0.1 K to 5 K

76:0 Without communicationmodule

76:1 With LON communicationmodule (recognised auto-matically; only for weather-compensated controlunits)

76:2 With cascade communica-tion module (recognisedautomatically; only for con-stant temperature controlunits)

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

Code 2


5623

520

GB

Serv

ice

88

Coding in the delivered condition Possible change7b:1 With LON communication

module: 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

81:2 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)

88:0 Temperature display in°C (Celsius)

88:1 Temperature display in °F(Fahrenheit)

8A:175 Do not adjust. 8F:0 Operation in the standard

menu and extendedmenu enabled.

NoteThe respective code isonly activated when youexit the service menu.

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

8F:2 Operation enabled in thestandard menu; blocked inthe extended menu.Emissions test mode canbe enabled.

Code 2


5623

520

GB

89

Coding in the delivered condition Possible change90:128 Time constant for calcu-

lating the adjusted out-side temperature 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 Open Therm ex-tension

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

95:0 Without Vitocom 100communication interface

95:1 With Vitocom 100 commu-nication interface (auto-matic recognition)

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 Control unit transmits theoutside temperature to theVitotronic 200-H

98:1 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.

9C:0 No monitoring9C:5to

Time adjustable from 5 to60 min

Code 2


5623

520

GB

Serv

ice

90

Coding in the delivered condition Possible changeIf a subscriber fails to re-spond, the values speci-fied inside the control unitwill be used after 20 min.Only then will a fault mes-sage be issued. (only forweather-compensatedcontrol units)

9C:60

9F:8 Differential temperature8 K; only in conjunctionwith mixer circuit (only forweather-compensatedcontrol units)

9F:0to9F:40

Differential temperatureadjustable from 0 to 40 K

Boiler/group "2"

Select "Boiler" for weather-compensated control units (see page 80).Select "2" for constant temperature control units (see page 80).

Coding

Coding in the delivered condition Possible change01:1 Single boiler system (only

for constant temperaturecontrol units)

01:2 Multi boiler system withVitotronic 300-K

04:1 Minimum burner pausesubject to the boiler load(specified by boiler cod-ing card)

04:0 Minimum burner pause setpermanently (specified byboiler coding card)

06:... Maximum limit of the boil-er water temperature,specified in °C by the boil-er coding card

06:20to06:127

Maximum limit of the boilerwater temperature withinthe ranges specified by theboiler

07:1 Boiler number in multiboiler systems (only forconstant temperaturecontrol units)

07:2to07:8

Boiler number 2 to 8 in mul-ti boiler systems

Code 2


5623

520

GB

91

Coding in the delivered condition Possible change08:... Maximum burner heating

output in kW in the caseof a multi boiler system

08:0to08:199

Maximum burner heatingoutput adjustable from 0 to199 kW (limited by boiler-specific parameters) insteps of 1 kW

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

Number of hours run be-fore the burner should beserviced is adjustable from100 to 10,000 hOne adjusting step ≙100 h

23:0 No time interval for burn-er service

23:1to23:24

Interval adjustable from 1to 24 months

24:0 No "Service" display 24:1 "Service" display (the ad-dress is automatically setand must be manually re-set after a service has beencarried out)

28:0 No burner interval igni-tion

28:1to28:24

Interval adjustable from 1 hto 24 h. The burner is force-started once every 30 s(only when operating withLPG).

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

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

30:3 Boiler circuit pump speedcontrolled via 0-10 V in-terface (do not adjust)

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

38:≠0 Status burner control unit:Faults

Code 2

Boiler/group "2" (cont.)

5623

520

GB

Serv

ice

92

Select "DHW" for weather-compensated control units (see page 80).Select "3" for constant temperature control units (see page 80).

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 over60 °C

NoteMaximum value subject toboiler coding card.Observe the max. permis-sible DHW temperature.

58:0 Without auxiliary functionfor DHW heating

58:10to58:60

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

59:0 Cylinder heating:Starting point -2.5 KStopping point +2.5 K

59:1to59:10

Starting point adjustablefrom 1 to 10 K below the setvalue

5b:0 DHW cylinder directlyconnected to the boiler

5b:1 DHW cylinder connecteddownstream 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"

Code 2

DHW/group "3"

5623

520

GB

93

Coding in the delivered condition Possible change60:20 During DHW heating, the

boiler water temperatureis max. 20 K higher thanthe set DHW tempera-ture

60:5to60:25

The differential betweenthe boiler water tempera-ture and the set DHW tem-perature is adjustable from5 to 25 K

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

62:0 Circulation pump withoutrun-on

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 every 14days

63:15 2 x daily65:0 Do not adjust. 67:40 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)

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

6F:0to6F:100

Max. output for DHW heat-ing adjustable from min.output to 100 %

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

72:0 DHW circulation pump:"ON" in accordance withthe time program (only forweather-compensatedcontrol units)

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

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

Code 2


5623

520

GB

Serv

ice

94

Coding in the delivered condition Possible change73:0 DHW circulation pump:

"ON" in accordance withthe time program (only forweather-compensatedcontrol units)

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-compensated control units (see page 80).Select "4" for constant temperature control units (see page 80).

NoteThe solar group is only displayed if a solar control module, type SM1, is connected.

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 Minimum speed of the so-lar circuit pump 10 % ofthe maximum speed.

05:2to05:100

Minimum speed of the so-lar circuit pump is adjusta-ble from 2 to 100 %.

Code 2


5623

520

GB

95

Coding in the delivered condition Possible change06:75 Maximum speed of the

solar circuit pump 75 % ofthe maximum possiblespeed.

06:1to06:100

Maximum speed of the so-lar circuit pump is adjusta-ble from 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.

08:60 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.

Code 2


5623

520

GB

Serv

ice

96

Coding in the delivered condition Possible change0E:1 Heat statement in con-

junction with Viessmannheat transfer medium.

0E:2 Never adjust.0E:0 No heat statement.

0F:70 Solar circuit flow rate atthe maximum pumpspeed 7 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.■ 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.

11:10to11:90

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

12:20 Minimum collector tem-perature (minimum starttemperature for the solarcircuit pump) 20 °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.

Code 2


5623

520

GB

97

Coding in the delivered condition Possible change20:6 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.

22:8 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 Shutdown temperaturedifferential with centralheating backup (code"20:4" must be selected)4 K.

23:2to23:30

Shutdown temperature dif-ferential adjustable from 1to 29 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 Shutdown temperaturefor thermostat function(code "20:5" or "20:6"must be selected) 50 °C.

25:0to25:100

Shutdown temperature forthermostat function adjust-able from 0 to 100 K.

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

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

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

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

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

27:15 Alternate heating time15 min.

27:5to27:60

The alternate heating timeis adjustable from 5 to60 min.

Code 2


5623

520

GB

Serv

ice

98

Coding in the delivered condition Possible changeThe DHW cylinder with-out priority is heated atmost for the duration ofthe set alternate heatingtime if the DHW cylinderwith priority is heated up.

28:3 Alternate pause time3 min.After the selected alter-nate heating time for theDHW cylinder without pri-ority has expired, the risein collector temperature iscaptured during the alter-nate pause time.

28:1to28:60

The alternate pause time isadjustable from 1 to60 min.

Heating circuit 1, heating circuit 2, heating circuit 3/group "5"

Select "Heating circuit ..." for weather-compensated control units (see page 80).Select "5" for constant temperature control units (see page 80).

Coding

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

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

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 and200 RF)

A2:2 Cylinder priority applica-ble to heating circuitpump and mixer

A2:0 Without cylinder priority ap-plied to heating circuitpump and mixer

A2:1 Cylinder priority only appli-cable to mixer

Code 2


5623

520

GB

99

Coding in the delivered condition Possible changeA2:3toA2:15

Reduced priority applied tomixer (the heating circuitreceives a reduced amountof energy)

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 following table)

! Please noteWhen selecting a value below 1 °C, there is a risk of pipes outside the thermalenvelope of the building freezing up.The standby mode in particular should be taken into consideration, e.g. duringholidays.

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 selected.

Code 2


5623

520

GB

Serv

ice

100

Coding in the delivered condition Possible changeNote"Important" observe forcode "A3".

A5:5 With heating circuit pumplogic function (economymode): 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 2


5623

520

GB

101

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

tion disabled (only forweather-compensatedcontrol units)

A6:5toA6:35

Extended economy func-tion enabled, i.e. the burnerand heating circuit pumpwill stop and the mixerclose 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 a weath-er-compensated controlunit and heating circuitwith mixer)

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

tempting to close for lon-ger than 20 min.

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

control function■ If there is a risk of frost

A8:1 Heating circuit with mixercreates a demand for theboiler circuit pump (onlyfor weather-compensa-ted control units)

A8:0 Heating circuit with mixercreates no demand for theboiler circuit 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.

Code 2


5623

520

GB

Serv

ice

102

Coding in the delivered condition Possible changeb0:0 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 unitand for the heating circuit,operation with room tem-perature hook-up must beprogrammed: Room influ-ence factor 8 (only forweather-compensatedcontrol units; change thecode only for the heatingcircuit with mixer)

b2:0 Without room influenceb2:1tob2:64

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

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

Heating circuit pump logicfunction, see the followingtable:



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 K

Code 2


5623

520

GB

103



7 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 58)

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

Heating curve level adjust-able from –13 to 40 (seepage 58)

d5:0 The external heating pro-gram changeoverchanges 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 changesto "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)

Code 2


5623

520

GB

Serv

ice

104

Coding in the delivered condition Possible changed7:2 Heating circuit pump starts

at signal "External de-mand" (subject to codingaddresses 3A, 3b and 3C)

d8:0 No heating programchangeover via extensionEA1




E1:1 Do not adjust E2:50 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 –01 K

E2:51toE2:99

Display correction +0.1 KtoDisplay correction +4.9 K

E5:0 Do not adjust F1:0 Screed drying function

disabled (only for weath-er-compensated controlunits).

F1:1toF1:6

Screed drying adjustable inaccordance with 6 selecta-ble temperature/time pro-files (see page 154)

F1:15 Constant flow temperature20 °C

F2:8 Time limit for party modeor external heating pro-gram changeover viapushbutton: 8 h (only forweather-compensatedcontrol units)*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 boilercircuit pump in heatingmode: 12 min (only forconstant temperaturecontrol units)

F5:0 No boiler circuit pump run-on time

F5:1toF5:20

Run-on time of the boilercircuit pump adjustablefrom 1 to 20 min

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

Code 2


5623

520

GB

105

Coding in the delivered condition Possible changeF6:25 In "Only DHW" operating

mode, the boiler circuitpump is permanently on(only for constant temper-ature control units)

F6:0 In "Only DHW" operatingmode, the boiler circuitpump is permanently off

F6:1toF6:24

In "Only DHW" operatingmode, the boiler circuitpump is started 1 to 24times per day for 10 mineach time.

F7:25 In "Standby mode", theboiler circuit pump is per-manently on (only forconstant temperaturecontrol units)

F7:0 In "Standby mode", theboiler circuit pump is per-manently off

F7:1toF7:24

In "Standby mode", theboiler circuit pump is star-ted 1 to 24 times per day for10 min each time.

F8:-5 Temperature limit for ter-minating the reducedmode -5 ºC; see exampleon page 157.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

F9:-14 Temperature limit for rais-ing the reduced set roomtemperature -14 ºC; seeexample on page 157(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 temperature or the setflow temperature whenchanging from operationwith reduced room tem-perature to operation withstandard room tempera-ture, by 20 %. See exam-ple on page 158 (only forweather-compensatedcontrol units).

FA:0to

Temperature rise adjusta-ble from 0 to 50 %

Code 2


5623

520

GB

Serv

ice

106

Coding in the delivered condition Possible changeFA:50

Fb:30 Duration for raising theset boiler water tempera-ture or the set flow tem-perature (see coding ad-dress "FA") 60 min. Seeexample on page 158(only for weather-com-pensated control units).

Fb:0toFb:150

Duration adjustable from 0to 300 min;1 step ≙ 2 min)

Code 2


5623

520

GB

107


Press OK and å simultaneously forapprox. 4 s.

Service menu overview

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

NoteDo not adjust menu item "Multi-boilersystem".The menu item turns a weather-compen-sated control unit into a constant tem-perature control unit.

Exiting the service level

1. Select "Terminate service?".

2. Select "Yes".

3. Confirm with OK.

NoteThe service level is automatically exi-ted after 30 min.


1. Press OK and å simultaneouslyfor approx. 4 s."Ü" flashes on the display.

2. Select required function. See the fol-lowing pages.

Diagnosis and service scans

Calling up the service level56

23 5

20 G

B

Serv

ice

108

Exiting the service level

1. Select "Serv" 7 with Ú.

2. Confirm with OK."OFF" flashes.

3. Confirm with OK.

NoteThe service level is automatically exi-ted after 30 min.

Diagnosis

Calling up operating data

■ Weather-compensated control unit:Operating data can be called up in sixareas. 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 operatingdata, see chapter "Brief scan".

■ Constant temperature control unit:Operating data can be called up in the"i" menu.


For further information on operatingdata, see chapter "Brief scan".

Calling up operating data

Note"- - -" appears on the display if a sensorthat has been scanned is faulty.



2. "Diagnosis"

3. Select required group, e.g. "Gen-eral".


Calling up the service level (cont.)

5623

520

GB

109


Operating instructions, chapter"Calling up information"

Resetting operating data

Saved operating data (e.g. hours run)can be reset to 0. The value "Adjusted outside temp" isreset to the actual value.



2. "Diagnosis"

3. "Reset data"

4. Select required value (e.g. "Burnerstarts") or "All details".


Operating instructions, chapter"Calling up information"

Brief scan

In the brief scan, you can call up tem-peratures, software versions and con-nected components, for example.



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.)

5623

520

GB

Serv

ice

110

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 scheme 01

to 10Software versionControl unit

Software versionProgramming unit

2: 0 0 Appliance version Device identificationZE-ID

3: 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 0 Softwareversion,exten-sion AM1

Softwareversion, ex-tensionEA1

6: 0 0 0 Flow ratesensorswitchingstate1: Flowrate toolow or novolumet-ric flow

0 0

7: LONSubnet address/sys-tem number

LONNode address

0

8: LONSBVTconfigu-ration

LONSoftwareversioncommu-nicationco-pro-cessor

LONNeuron chip softwareversion

Number of LON sub-scribers


Diagnosis (cont.)

5623

520

GB

111

Line (briefscan)

Field

1 2 3 4 5 69: Heating circuit A1

(without mixer)Heating circuit M2(with mixer)

Heating circuit M3(with mixer)

Remotecontrol0: without1: Vitotrol200/200A/200 RF2: Vitotrol300/300A/300 RForVitohome

SoftwareversionRemotecontrol

Remotecontrol0: with-out1: Vitotrol200/200A/200 RF2: Vitotrol300/300A/300 RForVitohome

SoftwareversionRemotecontrol

Remotecontrol0: with-out1: Vitotrol200/200A/200 RF2: Vitotrol300/300A/300 RForVitohome

Softwareversion Re-mote con-trol

10:(only forKM BUScirculationpumps)

Internal circulationpump

Heating circuitpump, heating cir-cuit M2

Heating circuit pump,heating circuit M3

Variablespeedpump0: With-out1: Wilo2: Grund-fos

Softwareversion,variablespeedpump0: No var-iablespeedpump


SoftwareversionVariablespeedpump0: No var-iablespeedpump


SoftwareversionVariablespeedpump0: No varia-ble speedpump

11: 0 0 SoftwareversionMixer ex-tensionheatingcircuitM20: Nomixer ex-tension

0 SoftwareversionMixer ex-tensionheatingcircuitM30: Nomixer ex-tension

0


Diagnosis (cont.)

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2. Confirm with OK.

3. Select the required scan with V/v.For example, "b" 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 1to 2

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 versionCommunications co-pro-cessor

Software versionLON module

8 Subnet address/systemnumber

Node address

9 Burner control unit type Appliance typeA Diverter

valve sta-tus0: Notavailable1: Heating2: Centralposition3: DHWheating

Flow rate1: Flow ratetoo low or novolumetricflow

Max. heating output in %

b Boiler coding card (hexadecimal)c Flow rate (specified in l/h)


Diagnosis (cont.)

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Brief scan Display

C VersionAppliance

VersionBurner control unit

d 0 0E1

SoftwareversionSolar con-trol mod-ule, typeSM1

Software versionBurner control unit

SoftwareversionCascademodule

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 ofcoding ad-dress 36 ingroup 1"General")

Output 157switchingstate0: OFF1: ON

Input DE1switchingstate0: Open1: Closed



F4

Softwareversion

External hook-up 0 - 10 VDisplay in %

Solar control module SM1F5

Stagnation time of the solar thermal system in h

F6

Night circulation, solar thermal system (number)

F7

Differential temperature monitoring


Diagnosis (cont.)

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Brief scan Display

F8

Solar cen-tral heatingbackup0: Disabled1: Enabled

Output 22switchingstate0: OFF1: ON

Open Therm extension (if installed)F9

Softwareversion

DHW heat-ing status

External hook-up 0 - 10 VDisplay in %

Checking outputs (relay test)



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 operated at minimum output; circulation

pump is startedFull load On Burner operated at maximum output; circulation

pump is startedOutput, internal On Output sÖ active (boiler circuit pump)Output 21/28 On Output sA active (circulation pump for cylinder heat-

ing)Htg circ pumpHC2

On Heating circuit pump output enabled (extension toheating circuit with mixer)

Mixer HC2 Open "Mixer open" output enabled (extension to heatingcircuit with mixer)

Mixer HC2 Close "Mixer close" output enabled (extension to heatingcircuit with mixer)

Htg circ pumpHC3

On Heating circuit pump output enabled (extension toheating circuit with mixer)


Diagnosis (cont.)

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Display ExplanationMixer HC3 Open "Mixer open" output enabled (extension to heating

circuit with mixer)Mixer HC3 Close "Mixer close" output enabled (extension to heating

circuit with mixer)Outp. int. exten.H1

On Output at internal extension enabled

AM1 output 1 On Output A1 at extension AM1 enabledAM1 output 2 On Output A2 at extension AM1 enabledEA1 output 1 On Contact P - S at plug aBJ of extension EA1 closedSolar circuitpump

On Solar circuit pump output sF on solar control moduleSM1 active

Solar circ pmpmin

On Solar circuit pump output on solar control moduleSM1 switched to minimum speed

Solar circ pmpmax

On Solar circuit pump output on solar control moduleSM1 switched to maximum speed

SM1 output 22 On Output sS on solar control module SM1 active



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 operated at minimum output; circulation pump is started2 Burner operated at maximum output; circulation pump is star-

ted3 Output sÖ active (boiler circuit pump)10 Internal extension output enabled15 Solar circuit pump output sF on solar control module SM1 ac-

tive


Checking outputs (relay test) (cont.)

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Display Explanation16 Solar circuit pump output on solar control module SM1 switched

to minimum 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 enabled21 Output A2 at extension AM1 enabled22 Output sA active (circulation pump for cylinder heating)


Checking outputs (relay test) (cont.)

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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. Foran explanation of the fault code, see thefollowing pages.For some faults, the type of fault is alsodisplayed in plain text.

Acknowledging a fault

Follow the instructions on the display.

NoteThe fault message is transferred to thestandard menu.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

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 becalled up.Faults are sorted by date.


2. "Fault history"

3. "Display?"

Troubleshooting

Fault display56

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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.)

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Dis-playedfaultcode

Const. Weath.-comp.

System char-acteristics

Cause Measures

10 X X Regulates as ifthe outsidetemperaturewere 0 °C

Short circuit,outside tem-perature sen-sor

Check outside tem-perature sensor(see page 135).


Lead break,outside tem-perature sen-sor

Check outside tem-perature sensor(see page 135).


Communica-tion interrup-tion, outsidetemperaturesensor RF(outside tem-perature sen-sor RF, KMBUS to wire-less base sta-tion, wirelessbase stationor wireless re-peater faultyor defective).

Check wirelessconnection (placeoutside tempera-ture sensor RF andwireless repeaterclose to the boil-er).Check KM BUS towireless base sta-tion.Log off outsidetemperature sen-sor and wirelessrepeater, then logthem on again.

Wirelessbase sta-tion

Replace outsidetemperature sen-sor RF.Replace wirelessrepeater.Replace wirelessbase station.

1 A X X Burner blocked Flow sensor 1faulty

Replace sensor(see page 138).

Troubleshooting

Fault codes56

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Serv

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120

Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

1b X X Burner blocked Flow sensor 2faulty

Replace sensor(see page 138).

1F X X Burner blocked Differentialflow rate toolarge

Clean heat ex-changer by flush-ing.

20 X X Regulates with-out flow tem-perature sen-sor (low lossheader)

Short circuit,system flowtemperaturesensor

Check low lossheader sensor (seepage 136).

28 X X Regulates with-out flow tem-perature sen-sor (low lossheader)

Lead break,system flowtemperaturesensor

Check low lossheader sensor (seepage 136).If no low loss head-er sensor is con-nected, set code52:0.

30 X X Burner blocked Short circuit,boiler watertemperaturesensor

Check boiler watertemperature sen-sors (seepage 136).

38 X X Burner blocked Lead break,boiler watertemperaturesensor

Check boiler watertemperature sen-sors (seepage 136).

40 X Mixer closes Short circuit,flow tempera-ture sensor,heating circuit2 (with mixer)

Check flow temper-ature sensor (seepage 142).

44 X Mixer closes Short circuit,flow tempera-ture sensor,heating circuit3 (with mixer)


Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

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)


50 X X No DHW heat-ing by the boil-er

Short circuit,cylinder tem-perature sen-sor

Check the cylindertemperature sen-sor (seepage 136).

58 X X No DHW heat-ing

No DHWheating by theboiler

Check the cylindertemperature sen-sor (seepage 136).

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 solarcontrol module orsensor on theVitosolic.

93 X X Control mode Short circuit,cylinder tem-perature sen-sor

Check temperaturesensor at connec-tion S3 to theVitosolic.

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.)

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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 solar controlmodule.

9 A X X No solar DHWheating

Lead break,collector tem-perature sen-sor

Check temperaturesensor & on solarcontrol module orsensor on theVitosolic.

9b X X Control mode Lead break,cylinder tem-perature sen-sor

Check temperaturesensor at connec-tion S3 to theVitosolic.

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 solar circuitor flow ratetoo low, ortemperaturelimiter has re-sponded

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 139).

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

A4 X Control mode Max. systempressure ex-ceeded

Check systempressure (max.system pressure6 bar).Check the functionand sizing of the di-aphragm expan-sion vessel.Vent the heatingsystem.

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 circuit2 (with mixer)

Check extensionkit connections andcode.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

bb X Mixer regulatesto 20°C flowtemperature

Communica-tion error, ex-tension kit forheating circuit3 (with mixer)

Check extensionkit connections andcode.

bC X Control modewithout remotecontrol

Communica-tion error, re-mote controlVitotrol heat-ing circuit 1(without mix-er)

Check connec-tions, cable, codingaddress "A0" in"Heating circuit"group and remotecontrol DIPswitches. For wireless re-mote control units:Check radio pathconnections, placeremote control unitand wireless re-peater close to theboiler. Check KMBUS connection towireless base sta-tion. Replace wire-less components.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

bd X Control modewithout remotecontrol

Communica-tion error, re-mote controlVitotrol heat-ing circuit 2(with mixer)

Check connec-tions, cable, codingaddress "A0" in"Heating circuit"group and remotecontrol unit setting.For wireless re-mote control units:Check radio pathconnections, placeremote control unitand wireless re-peater close to theboiler. Check KMBUS connection towireless base sta-tion. Replace wire-less components.

bE X Control modewithout remotecontrol

Communica-tion error, re-mote controlVitotrol heat-ing circuit 3(with mixer)

Check connec-tions, cable, codingaddress "A0" in"Heating circuit"group and remotecontrol unit setting.For wireless re-mote control units:Check radio pathconnections, placeremote control unitand wireless re-peater close to theboiler. Check KMBUS connection towireless base sta-tion. Replace wire-less components.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

bF X Control mode IncorrectLON commu-nication mod-ule

Replace LON com-munication mod-ule.

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 error,Open Thermextension

Check OpenTherm extension.

Cd X X Control mode Communica-tion error,Vitocom 100(KM BUS)

Check connec-tions, Vitocom 100and coding ad-dress "95" in group"General"/1.

CF X Control mode Communica-tion error,LON commu-nication mod-ule

Replace LON com-munication module

d6 X X Control mode Input DE1 re-ports a fault atextensionEA1

Remove fault atappliance con-cerned


Remove fault atappliance con-cerned.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures


Remove fault atappliance con-cerned.

dA X Control modewithout roominfluence

Short circuit,room temper-ature sensor,heating circuit1 (withoutmixer)

Check room tem-perature sensor,heating circuit 1.

db X Control modewithout roominfluence

Short circuit,room temper-ature sensor,heating circuit2 (with mixer)


dC X Control modewithout roominfluence

Short circuit,room temper-ature sensor,heating circuit3 (with mixer)


dd X Control modewithout roominfluence

Lead break,room temper-ature sensor,heating circuit1 (withoutmixer)

Check room tem-perature sensor forheating circuit 1and remote controlsettings.

dE X Control modewithout roominfluence

Lead break,room temper-ature sensor,heating circuit2 (with mixer)


dF X Control modewithout roominfluence

Lead break,room temper-ature sensor,heating circuit3 (with mixer)


Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

E0 X Control mode Fault externalLON sub-scriber

Check connectionsand LON subscrib-ers.

E1 X X Burner in a faultstate

Ionisationcurrent toohigh duringcalibration

Check gap be-tween ionisationelectrode andburner gauze as-sembly (seepage 46).In open flue mode,prevent very dustyconditions for thecombustion air.Press reset buttonR.


Heating waterflow rate toolow duringcalibration.Flow limitercaused shut-down.

Ensure adequatecirculation volume.Check flow limiter. Remove scaling,blockage.Press reset buttonR.


Heat transfertoo low duringcalibration.Temperaturelimiter causedshutdown.

Ensure adequateheat transfer.Press reset buttonR.

E4 X X Burner blocked Fault, supplyvoltage 24 V

Replace controlunit.

E5 X X Burner blocked Fault, flameamplifier

Replace controlunit.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures


Ionisationcurrent toolow duringcalibration

Check ionisationelectrode:■ Distance to burn-

er gauze assem-bly (see page 46)

■ 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 limiter),gas train and con-necting lead.Check allocation ofgas type (seepage 37).

Check ionisationelectrode:■ Distance to burn-



Press reset buttonR.

Troubleshooting

Fault codes (cont.)

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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 mode,prevent very dustyconditions for thecombustion air.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 46).Check allocation ofgas type (seepage 37).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 buttonRor Replace boiler cod-ing card and pressreset button R.

Ed X X Burner in a faultstate

Internal fault Replace controlunit.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

EE X X Burner in a faultstate

Flame signalis not presentor too weak atburner start

Check gas supply(gas pressure andgas flow limiter). 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 46)

Check condensatedrain.Press reset buttonR.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

EF X X Burner in a faultstate

Flame is lostimmediatelyafter it hasbuilt (duringthe safetytime)

Check gas supply(gas pressure andgas flow limiter).Check flue gas/ventilation air sys-tem for flue gas re-circulation.

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 hasexceededlimit

Check heating sys-tem fill level. Ventthe system. Press reset buttonR after flue systemhas cooled down.


Boiler watertemperaturesensor hasresponded

Check heating sys-tem fill level. Checkcirculation pump.Vent the system.Check boiler watertemperature sen-sor and connectingcables. Press reset buttonR.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures


Flame signalis alreadypresent atburner start

Check ionisationelectrode and con-necting cable. Press reset buttonR.


Boiler watertemperaturesensor tem-perature val-ues vary toowidely fromone another

Replace boiler wa-ter temperaturesensors.


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 atstandstill

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.

Troubleshooting

Fault codes (cont.)

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Dis-playedfaultcode

Const. Weath.-comp.


Cause Measures

Fd X X Burner in a faultstate and addi-tional fault b7 isdisplayed

Boiler codingcard is miss-ing

Insert the boilercoding card.Press reset buttonR.Replace controlunit if fault per-sists.

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 cardor replace it or thecontrol unit.

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.)

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Checking the outside temperature sensor (weather-compensa-ted control unit)

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 test onthe sensor itself.

4. Depending on the result, replace thelead or the outside temperature sen-sor.

Troubleshooting

Repair56

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Checking the boiler water temperature sensors, cylinder tem-perature sensor or flow temperature sensor for the low lossheader

5

X3

§d{]A

Troubleshooting

Repair (cont.)

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1. ■ Boiler water temperature sen-sorsRemove lead to boiler water tem-perature sensor § or §A andcheck the resistance.

■ Cylinder temperature sensorPull plug % from the cable har-ness at the control unit and checkthe resistance.

■ Flow temperature sensorPull plug "X3" from the control unitand check the resistance acrossterminals "X3.4" and "X3.5".

10

1

10 30 50 70 90 110Temperature in °C

0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


2. Check the sensor resistance andcompare the actual values with thecurve.

3. Replace the sensor in the case ofsevere deviation.

DangerThe boiler water temperaturesensors are immersed in theheating water (risk of scald-ing).Drain the boiler before replac-ing the sensor.

Troubleshooting

Repair (cont.)

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Replacing the flow rate sensor

A

NoteIn the event of a fault, both sensors needto be replaced.

1. Drain the boiler on the heating waterside.

2. Pull leads from flow rate sensor A.

3. Undo screws and remove faulty flowrate sensor A.

4. Install new flow rate sensor A andsecure with the screws.

Troubleshooting

Repair (cont.)

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Checking the flue gas temperature sensor

The flue gas temperature sensor locks out the boiler when the permissible flue gastemperature is exceeded. Reset the interlock after the flue system has cooled downby pressing reset button R.

A 1. Pull leads from flue gas temperaturesensor A.

10

1


0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


2. Check the sensor resistance andcompare it with the curve.

3. Replace the sensor in the case ofsevere deviation.

Fault during commissioning (fault A3)

During commissioning, the control unit checks correct placement of the flue gas tem-perature sensor. If commissioning is terminated and fault message A3 is displayed:

Troubleshooting

Repair (cont.)

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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 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).

Troubleshooting

Repair (cont.)

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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 circuit2)

2 2 3 45

6

109 87

Heating circuit with mix-er M3 (heating circuit3)

4 42 3

56

109 87

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.

Note the rotational direction of the mixermotor during its self-test.Then set the mixer manually to "Open".

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 mixer setis 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 "~".

Troubleshooting

Repair (cont.)

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Serv

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142

3. Refit the casing cover.

Check flow temperature sensor

Pressure drop curve

10

1


0.40.60.8

2

468

20

Res

ista

nce

in k

Ω


1. Pull plug ? (flow temperature sen-sor).

2. Check the sensor resistance andcompare it with the curve.Replace the sensor in the case ofsevere deviation.

Checking the Vitotronic 200-H (accessories)

The Vitotronic 200-H is connected to thecontrol unit via the LON. To test the con-nection, carry out a subscriber check atthe boiler control unit (see page 62).

Troubleshooting

Repair (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

The burner and the circulation pump forcylinder heating are started if the cylindertemperature lies 2.5 K below the set cyl-inder temperature.

In the delivered condition, the set boilerwater temperature is 20 K higher thanthe set DHW temperature (adjustable viacoding address "60"). The burner will beswitched off and the circulation pumprun-on time will begin, if the actual cylin-der temperature exceeds the set cylindertemperature by 2.5 K.

Function description

Constant temperature control unit56

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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.

DHW heating

The burner and the circulation pump forcylinder heating are started if the cylindertemperature lies 2.5 K below the set cyl-inder temperature.

In the delivered condition, the set boilerwater temperature is 20 K higher thanthe set DHW temperature (adjustable viacoding address "60" in group "DHW"/3).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.



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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.

Internal extensions (accessories)

Internal extension H1


Weather-compensated control unit (cont.)

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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 safety valve can be connec-ted to connection gD.

Internal extension H2


Internal extensions (accessories) (cont.)

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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

cond.)Heating circuit pump sÖ 33:1 (delivered

cond.)34:1

Circulation pump for cylinder heatingsA

33:2 34:2


External extensions (accessories) (cont.)

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Extension EA1

A1 PCBF1 FuseDE1 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 heating program changeover

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 heating programchangeover function to the heatingcircuits

Select the heating program changeoverfunction for the respective heating circuitvia coding address d8 in the "Heatingcircuit" group at the boiler control unit:■ 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 heating 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 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

Select the heating program changeoverfunction for the respective heating circuitvia coding address "d8" in the "Heatingcircuit" group at the boiler control unit:

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 the "General" group.

The effect on the respective heating cir-cuit pump is selected in coding address"d6" in the "Heating circuit" group.

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 the "General" group.The effect on the respective heating cir-cuit pump is selected in coding address"d7" in the "Heating circuit" group.

The minimum set boiler water tempera-ture in case of external demand is selec-ted in coding address "9b" in the "Gen-eral" group.

Venting program

During the venting program, the circula-tion pump will be alternately switched onand off for 30 s respectively over a periodof 20 min.

The burner is switched off during theventing program.Activate venting program: See "Ventingthe heating system".

Screed drying

When activating screed drying, observethe information provided by the screedmanufacturer.



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When screed drying is activated, theheating circuit pump of the mixer circuitis switched on and the flow temperatureis held in accordance with the selectedprofile. After completion (30 days), themixer circuit will again be regulated auto-matically via the 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 conditions and outside tem-

perature during handover

The 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

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



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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

rFl

ow 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

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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 assignment of heating circuits mustbe configured during remote controlcommissioning.

Remote control affects the following heat-ing circuit

Configuration

Vitotrol 200A Vitotrol 300A Vitotrol 200 RF Vitotrol 300 RFHeating circuit without mixer A1 H 1 Heating circuit 1Heating circuit with mixer M2 H 2 Heating circuit 2Heating circuit with mixer M3 H 3 Heating circuit 3

NoteOne heating circuit can be assigned tothe Vitotrol 200A and 200 RF.Up to three heating circuits can beassigned to the Vitotrol 300A and300 RF.A maximum of 2 hardwired remote con-trol units or 3 wireless remote controlsmay be connected to the control unit.If the assignment of a heating circuit islater cancelled, reset coding address"A0" in the "Heating circuit" group 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.


Assigning heating circuits to the remote control

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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.

Air ratio λ– CO2/O2 contentAir ratioλ

O2 content(%)

CO2 content (%)for natural gas

E

CO2 content (%)for natural 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

To achieve an optimum combustion con-trol, the system regularly carries out anautomatic self-calibration; also after apower failure (shutdown). For this, thecombustion is briefly regulated to max.ionisation current (corresponding to airratio λ=1). Automatic calibration is car-ried out shortly after the burner start andlasts approx. 5 s. During calibration,higher than normal CO emissions mayoccur briefly.


Electronic combustion control unit (cont.)

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AA

X... Electrical interfaces§ (A/B) Boiler water temperature sen-

soraA Ionisation electrodeaG Flue gas temperature sensor

gF Ignition unita-Ö Fan motora-Ö A Fan motor controla:Ö Modulation coilA Flow rate sensor

Designs

Connection and wiring diagram – internal connections

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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 connections56

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A7 Connection adaptorA8 LON communication module or

cascade communication moduleA9 Internal extension (accessories)S1 ON/OFF switchS2 Reset buttonX... Electrical interfaces! Outside temperature sensor? Flow temperature sensor, low loss

header% Cylinder temperature sensor

(plug on the cable harness)

sÖ Heating circuit pump or boiler cir-cuit pump

sA Circulation pump for cylinder heat-ing

sK DHW circulation pumpdG Gas solenoid valvefÖ Power supplylH Power supply for accessories and

Vitotrol 100a-Ö Fan motoraYA 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 supplier.

Parts lists

Ordering parts56

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D

B C

E

F

A

A Type plateB Casing assembly

C Heat cell assemblywith burner

D Control unit assembly

Parts lists

Overview of the assemblies

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E Hydraulic assembly F Miscellaneous

Casing assembly

0001 Fixing clip (2 pce)0002 Viessmann logo0003 Safety guard0004 Control unit support

0005 Siphon grommet0006 Wall mounting bracket0007 Cover panel0008 Front panel

00010002

0004

0006

0001

0002 0008 0003

0005

0007

Parts lists

Overview of the assemblies (cont.)

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0001 Diaphragm grommet Ø 1100002 Lip seal Ø 1500003 Lip seal Ø 1100004 Boiler flue connection plug0005 Flue gas temperature sensor0006 Condensate hose0007 Siphon0008 Boiler flue connection

0009 Gas supply pipe0010 Connection pipe0011 Gasket G1 (5 pce)0012 Condensate drain set0013 Gasket G1¼ and G1½0014 Heat exchanger with hydraulics0015 Thermal insulation block0016 Burner

0006

0014

001500130012001100080007000600050004000300020001

0013

0011

00020003

0015

0005

0013

0011

0009

0010

00160012

0007

00040008

0001

0002

0003

Parts lists

Heat cell assembly

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0001 Ignition electrode gasket (5 pce)0002 Gasket, ionisation electrode

(5 pce)0003 Radial fan0004 Gas train0005 Burner gasket0006 Burner door0007 Thermal insulation ring

0008 Flue gas non-return device0009 Ionisation electrode0010 Cylinder burner gauze assembly0011 Adapter flange0012 Ignition unit0013 Ignition electrode block0014 Burner gauze assembly gasket0015 Door screws (set)

0001

0006

0015

0012

0008

0005

0007

0010

0014

0002

0015

0015

00150014

0014

0001

00020009

0013

00030004

0011

0015

0015

Hydraulic assembly

0001 Clip Ø 8 (5 pce)0002 Temperature sensor (2 pce)

0003 Pressure gauge0004 Flow sensor

Parts lists

Burner assembly56

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0004 000400030001

00010002

0001

0001

0001

Control unit assembly

0001 Control unit0002 Control unit casing rear panel0003 Coding card0004 Fuse 6.3 A slow (10 pce)0005 Locking handle0006 Programming unit for weather-

compensated mode0007 Programming unit for constant

temperature mode0008 LON module

0009 Adaptor PCB0010 Cable harness X8/X9/ionisation0011 Cable harness 100/35/54/earth0013 Mating plug0014 Cable fixing0015 Locking bolts, left and right0017 Outside temperature sensor RF0018 Outside temperature sensor NTC0020 Internal extension H1

Parts lists

Hydraulic assembly (cont.)

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0007

0006

00110010 0013

0009

001500050004

0015

0001

0017

0018

0014

0015

0004

0005

0020

0003

0008

0009

0002

Miscellaneous

0001 Operating instructions forweather-compensated mode

0002 Operating instructions for con-stant temperature mode

0003 Installation and service instruc-tions

0004 Spray paint, Vitowhite0005 Touch-up paint stick, Vitowhite

Parts lists

Control unit assembly (cont.)

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00020001

0003

0005

0004

Parts lists

Miscellaneous (cont.)

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Setting and actual values Set value Commis-sioning

Mainte-nance/Service

Date Signature Static pressure mbar ≤ 57.5 Supply pressure (flow pres-sure)

= for natural gas E mbar 17.4-25 = for natural gas LL mbar 17.4-25 = for LPG mbar 42.5-57.5 Tick gas type Carbon dioxide contentCO2

for natural gas

■ At lower heating output % by vol. 7.5-9.6 ■ At upper heating output % by vol. 7.5-9.6 For LPG ■ At lower heating output % by vol. 9.0-11.3 ■ At upper heating output % by vol. 9.0-11.3 Oxygen content O2 ■ At lower heating output % by vol. 3.8-7.3 ■ At upper heating output % by vol. 3.8-7.3 Carbon monoxide contentCO

■ At lower heating output ppm < 1000 ■ At upper heating output ppm < 1000

Commissioning/service reports56

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Rated voltage: 230 V~Rated frequency: 50 HzRated current: 6.0 ASafety category: I

IP rating:IP X 4 D toEN 60529

Permissible ambient temperature ■ during operation: 0 to +40 °C■ during storage and

transport: -20 to +65 °C

Electronic tempera-ture limiter setting: 82 °C (fixed)Backup fuse (powersupply): max. 16 A

Gas boiler, category II 2N3P

Rated heating output range TV/TR 50/30 °C

kW 32 - 125 32 - 150

Rated heat input range kW 30 - 118 30 - 142Power consumption in the deliveredcondition

W 146 222

Connection values relative to the max. load

With Natural gas E m3/h 12.49 15.03Natural gas LL m3/h 14.51 17.47LPG kg/h 9.23 11.10Product ID _-0085CN0050

NoteThe connection values are only for documentation purposes (e.g. in the gas contractapplication) or to estimate a supplementary volumetric settings check. Due to thefactory settings, the gas pressure must not be altered from these values. Reference:15°C, 1013 mbar.

Specification

Specification

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Declaration of Conformity for the Vitodens 200-W

We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm as sole respon-sible body that the product Vitodens 200-W complies with the following standards:

EN 15417 EN 60 335-2-102EN 15420 EN 61 000-3-2EN 806 EN 61 000-3-3EN 55 014 EN 62 233EN 60 335-1

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 the 1st BImSchV para-graph 6 [Germany].

Allendorf, 01 June 2012 Viessmann Werke GmbH&Co KG

Authorised signatory Manfred Sommer

Certificates

Declaration of conformity56

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AAcknowledging a fault display..........117

BBoiler, opening...................................30Boiler water temperature sensor .....136Boosting DHW heating.....................145Brief scans.......................................109Burner gauze assembly...............44, 45Burner installation..............................47Burner removal..................................43

CCalling up fault messages........117, 118Code 1■ Calling up........................................66Code 2■ Calling up........................................80Codes, resetting...........................66, 80Codes for commissioning...................51Combustion chamber cleaning..........47Combustion controller......................160Commissioning..................................31Condensate drain...............................48Cylinder temperature sensor ...........136

DDate, setting.......................................33Diaphragm expansion vessel.............48

EElectronic combustion controller......160Extension■ AM1..............................................148■ EA1...............................................150■ Internal H1....................................145■ Internal H2....................................146Extension kit for heating circuit withmixer ...............................................141External blocking..............................153External demand..............................154

FFault codes......................................119Fault history.....................................117Fault manager....................................61Fault memory...........................117, 118Faults...............................................117Filling the system...............................31Fill water.............................................31Flue gas temperature sensor...........139Function descriptions.......................143Function testing................................114Fuse.................................................140

GGas supply pressure..........................40Gas train ...........................................40Gas type.............................................36Gas type conversion..........................37

HHeat exchanger cleaning...................47Heating circuit assignment...............160Heating curve.....................................58Heating curve level............................60Heating curve slope...........................60Heating program changeover..........152Heat-up time....................................158

IIgnition...............................................46Ignition electrodes..............................46Ionisation electrode............................46

LLanguage selection............................32LON....................................................61■ Fault monitoring..............................61■ Setting subscriber numbers............61LON communication module..............61LON subscriber check........................62

MManufacturer's certificate ................175

Keyword index

Keyword index

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OOperating conditions, calling up.......108Operating data, calling up................108Output, setting....................................41Outside temperature sensor............135

RReduced room temperature raising. 157Reduced set room temperature.........60Reducing the heat-up output............157Reducing the heat-up time...............158Relay test.........................................114Remote control.................................160Removing a fault display..................117Report..............................................173Rotational direction of mixer motor■ Changing......................................141■ Checking.......................................141

SScreed drying...................................154Screed drying function.....................154Service level, calling up...................107Service menu, calling up..................107

Set room temperature selection.........59Siphon..........................................35, 48Specification ....................................174Standard set room temperature.........59Static pressure...................................40Supply pressure.................................39System pressure................................31System schemes..........................51, 66

TTightness test, balanced flue system.42Time, setting......................................33

VVenting...............................................34Venting program..............................154Vitocom 300.......................................61Vitotronic 200-H.................................61Vitotronic 200-H..............................142

WWiring diagram.................................162

Keyword index

Keyword index (cont.)

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Applicability

These service instructions apply for appliances with the following serial num-bers (see type plate):7506550 7506551

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 Natural gas and LPG version ... - Heating systems · switch lights or electrical appli- ... Commissioning, inspection, maintenance Steps ... Overview of the assemblies