Viessmann Series B2HA 60 Instructions d'exploitation

Installation and serviceinstructionsfor contractorsVIESMANNVitodens 200-WType B2HA, 45 and 60 kWWall mounted gas condensing boilerNatural gas and LPG

10Fitting the wall mounting bracketNoteThe enclosed screws and rawl plugs areonly suitable for concrete. For other con-struction materials, use fixing

100Coding in the delivered condition Possible changeThe burner and heating cir-cuit pump will stop and themixer will be closed at avariable value, adj

101Coding in the delivered condition Possible changeb0:0 With remote control:Heating mode/reducedmode: weather-compen-sated (only for weather-compensa

102Parameter ad-dress b5:...With heating circuit pump logic function:Heating circuit pump "OFF" Heating circuit pump "ON"7 RTactua

103Coding in the delivered condition Possible changed7:0 Heating circuit pumpstays in control mode atsignal "External de-mand"d7:1 Heating c

104Coding in the delivered condition Possible changeF5:12 Boiler circuit pump run-ontime in heating mode:12 min (only for constanttemperature controlu

105Coding in the delivered condition Possible changeFA:20 Raising the set boiler wa-ter or flow temperature by20 % when changingfrom operation with re

106Weather-compensated control unit Constant temperature control unitCalling up the service levelService menu:1. Press OK and å simultaneously forappr

107NoteDo not adjust menu item "Multi-boilersystem".The menu item turns a weather-compen-sated control unit into a constant tem-perature con

108Weather-compensated control unit Constant temperature control unitResetting operating dataSaved operating data (e.g. hours run) canbe reset to &quo

109Line (briefscan)Field 1 2 3 4 5 63: 0 Number of KM BUSsubscribersSoftware version, solarcontrol module SM14: Software versionBurner control unitTy

11Hooking the boiler onto the wall mounting bracket and levellingit1.2x2x4.3.2.5.Installation sequenceMounting the boiler and making connections (cont

110Line (briefscan)Field 1 2 3 4 5 69: Heating circuit A1(without mixer)Heating circuit M2(with mixer)Heating circuit M3(with mixer)Remotecontrol0: w

111For explanations of individual scans, see the following table:Brief scan Display0 Systemscheme 1to 2Software versionControl unitSoftwareversionProg

112Brief scan DisplayF2SoftwareversionOutput A1configura-tion(value corre-sponds tocode 33 set-ting)Output A1switchingstate0: OFF1: ONOutput A2configu

113Weather-compensated control unit1. Press OK and å simultaneouslyfor approx. 4 s.2. "Actuator test"The following relay outputs can be co

114Constant temperature control unit1. Press OK and å simultaneouslyfor approx. 4 s."Ü" flashes on the display.2. Select " " wit

115Weather-compensated control unitIn the event of a fault, red fault indicatorA flashes. " " flashes on the displayand "Fault" is

116Constant temperature control unitIn the event of a fault, red fault indicatorA flashes. The two-digit fault code and(subject to the type of fault)

117Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures10 X X Regulates, as ifthe outsidetemperaturewere 0 °CShort circuit,outs

118Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures20 X X Regulates with-out flow tem-perature sen-sor (low lossheader)Shor

119Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures4C X Mixer closes Lead break,flow tempera-ture sensor,heating circuit3 (

12Note on step 4Place the supplied circular level on theboiler and align boiler vertically using theadjusting screws.Connection on the heating water s

120Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures99 X X Control mode Lead break,temperaturesensor aÖCheck sensor aÖon sol

121Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresA4 X Control mode Max. systempressure ex-ceededCheck systempressure max.

122Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measuresbb X Mixer regulatesto 20 °C flowtemperature.Communica-tion error, ex-te

123Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measuresbd X Control modewithout remotecontrol Communica-tion error,Vitotrol re-

124Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresbE X Control modewithout remotecontrol Communica-tion error,Vitotrol re-

125Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresC4 X X Control mode Communica-tion error,OpenThermextensionCheck OpenThe

126Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresdC X Control modewithout roominfluenceShort circuit,room temper-ature se

127Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresE1 X X Burner in a faultstateIonisationcurrent toohigh duringcalibration

128Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresE7 X X Burner in a faultstateIonisationcurrent toolow duringcalibrationC

129Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresEA X X Burner in a faultstateIonisationcurrent out-side permissi-ble ran

13Do not carry out commissioning untilthe following conditions are met: Free passage through the flue gaspipes. Flue system with positive pressure i

130Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresEd X X Burner in a faultstateInternal error Replace controlunit.EE X X B

131Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresEF X X Burner in a faultstateFlame is lostimmediatelyafter it hasbuilt (

132Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresF3 X X Burner in a faultstateFlame signalis alreadypresent atburner star

133Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresFd X X Burner in a faultstate and addi-tional fault b7 isdisplayedCoding

134Faults without fault displayFault Cause ActionBurner blockedand 3 displayed incode 38.Flow rate insufficientCirculation pump or flowswitch faultyHe

135Checking the outside temperature sensor (weather-compensa-ted control unit)X3TroubleshootingMaintenance5585 174 GBService

13610010-20 -10 0 10 20 30Temperature in °C6820406080200Resistance in kΩSensor type: NTC 10 kΩ1. Pull plug "X3" from the control unit.2. T

137Checking the boiler water temperature sensors, cylinder tem-perature sensor or flow temperature sensor for the low lossheaderX3%§§ABTroubleshooting

1381. Boiler water temperature sensor1Pull the leads from boiler watertemperature sensor §A andcheck the resistance. Boiler water temperature sens

139Checking the flue gas temperature sensorThe flue gas temperature sensor locksout the boiler when the permissible fluegas temperature is exceeded. R

14ANotes regarding operation with LPGWe recommend the installation of anexternal safety solenoid valve wheninstalling the boiler in rooms belowground

140Fault during commissioning (fault A3)During commissioning, the control unitchecks correct placement of the flue gastemperature sensor. If commissio

141Extension kit, mixerChecking the setting of rotary selec-tor S1The rotary selector on the PCB of theextension kit defines the assignment tothe rele

1423. Refit the casing cover.Check flow temperature sensorPressure drop curve10110 30 50 70 90 110Temperature in °C0.40.60.8246820Resistance in kΩSen

1434 8°Cs AHeating modeThe selected set boiler water tempera-ture will be maintained when a demandis being raised by the room thermostatand the heatin

14448 °CBoiler temperatureHC114°C21°CHeating modeThe control unit determines a set boilerwater temperature subject to outsidetemperature or room tempe

145Boosting DHW heatingThis function is activated by specifying asecond set DHW temperature via codingaddress 58 in group "DHW" and activat-

146The internal extension is integrated intothe control unit casing. The followingalternative functions can be connectedto relay output sK. The functi

147The internal extension is integrated intothe control unit casing. The followingalternative functions can be connectedto relay output sK. The functi

148Extension AM1A1 Circulation pumpA2 Circulation pumpfÖPower supplyfÖ APower supply for additionalaccessoriesaVGKM BUSFunction descriptionExternal ex

149FunctionsOne of the following circulation pumpscan be connected to each of the connec-tions A1 and A2: Heating circuit pump for the heatingcircuit

152x4x4.3.5.2.1.Installation sequenceOpening the control unit enclosure (cont.)5585 174 GBInstallation

150EA1 extensionA1 PCBF1 MCB/fuseDE1 Digital input 1DE2 Digital input 2DE3 Digital input 30 – 10 V 0 – 10 V inputfÖPower supplyfÖ APower supply for ad

151Digital data inputs DE1 to DE3The following functions can be connec-ted alternatively: External operating program change-over for each heating cir

152Analogue input 0 – 10 VThe 0 – 10 V hook-up provides an addi-tional set boiler water temperature:0 – 1 V is taken as "no default for setboiler

153Heating program - changeover CodeChangeover via input DE1 d8:1Changeover via input DE2 d8:2Changeover via input DE3 d8:3You can select which direct

154External blocking and fault message input CodeInput DE1 3A:4Input DE2 3b:4Input DE3 3C:4The effect on the internal circulationpump is selected in c

155When screed drying is activated, theheating circuit pump of the mixer circuitis switched on and the flow temperatureis held in accordance with the

156Temperature profile 3: Code "F1:3"Flowtemperature °CDays50403020101 5 10 15 20 25 30Temperature profile 4: Code "F1:4"Flowtempe

157Temperature profile 6: Code "F1:6"Flowtemperature °C1 5 10 15 20 25 30Days504030201060Temperature profile 7: Code "F1:15"Flowte

158Example using the settings in the delivered conditionAB-20Outside temp. in °CBoiler water orFlow temperature in °C8070605040300 -5 -10 -15510Set ro

159Example using the settings in the delivered condition100203030405060600700800900Set boiler water or flowtemperature in °CTime in hABCDAStart of ope

16L N230V~ 230V~59640409620351001LNX42 12132 15 4X3LN21M1~X19X14AB2120L1CD145145LNARadio clock receiverBHeating circuit pump or boiler circuitpumpCV

160The assignment of heating circuits mustbe configured during remote controlcommissioning.Remote control affects the following heat-ing circuitConfig

161To check the combustion quality, theCO2 content or the O2 content of the fluegas is measured. The prevailing air ratiois determined with the measur

162A1 Main PCBX... Electrical interfaces§ABoiler water temperature sen-sor§BBoiler water temperature sen-soraAIonisation electrodeaGFlue gas temperatu

163a:ÖModulation coilDesignsConnection and wiring diagram – internal… (cont.)5585 174 GBService

164A1 Main PCBA2 Power supply unitA3 OptolinkA4 Burner control unitA5 Programming unitA6 Coding cardDesignsConnection and wiring diagram – external co

165A7 Connection adaptorA8 LON communication module orcascade communication moduleA9 Internal extension (accessories)S1 ON/OFF switchS2 Reset buttonX.

166 Serial no. (see type plate A) Assembly (from this parts list) Part number of the individual partwithin the assembly (from this partslist)Standar

167AB CDF EAType plateBCasing assemblyCHeat cell assemblywith burnerDControl unit assemblyParts listsOverview of the assemblies5585 174 GBService

168EHydraulic assemblyFMiscellaneousCasing assemblyPos. Component Serial no. (see typeplate) Part no. of individualpart0001 Fixing clip (2 pc

1690008000300010002000500070006000400090008000800080008000800010002Parts listsCasing assembly (cont.)5585 174 GBService

17Connections on 230 V~ plugsÖBoiler circuit pump or heating circuitpump Variable speed with 0 - 10 V con-nectionsACirculation pump, optional connec-

170Pos. Component Serial no. (see typeplate) Part no. of individualpart0001 Condensate hose 7818021 78180210002 Lip seal, system D 80 7818137

1710003000200130004001300080013001200010012001400120007001500110006000900040005001000020003000900110013Parts listsHeat cell assembly (cont.)5585 174 G

172Pos. Component Serial no. (see typeplate) Part no. of individualpart0001 Gas train CES 7826508 78265080002 Burner gasket 7 298 7836178 783

173000200090003001600130010001000140012000100080011000500150007000600030005000600060005000300020004Parts listsBurner assembly (cont.)5585 174 GBServic

174Pos. Component Serial no. (see typeplate) Part no. of individualpart0001 Temperature sensor (2 pce) 7835112 78351120002 Quick-action air v

1750010000200040004000800080008000500060006000600090007001200070011001000100001000400080004000800120012Parts listsHydraulic assembly (cont.)5585 174 G

176Pos. Component Serial no. (see typeplate) Part no. of individualpart0001 Control unit VBC135-A10.001 7838553 78385530002 Casing back panel

177000200080009000300200005000400150001001500060010 0011001700180014000400050015000900130007Parts listsControl unit assembly (cont.)5585 174 GBService

178Pos. Component Serial no. (see typeplate) Part no. of individualpart0001 Touch-up spray paint, white, 150 ml 7822681 78226810002 Touch-up

179Settings and actual values Set value Commis-sioningMainte-nance/Service Date Signature Static pressure mbarkPa≤ 57.5≤ 5.75

18Circulation pump at plug sAA1~MsALN?ACirculation pumpRated current 2(1) A~Rated voltage 230 V~ Set function of connected componentin coding address

180Rated voltage: 230 V~Rated frequency: 50 HzRated current: 6.0 ASafety category: IIP rating:IP X 4 D to EN60529Permissible ambient temperature Dur

181Declaration of Conformity for the Vitodens 200-WWe, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm as sole respon-sible body that the

182AAcknowledging a fault display...115BBoiler, opening...30Boiler water temperature sensor ...137Boosting DH

183MManufacturer's certificate ...181Mixer open/closed...141OOutside temperature sensor...135RRedu

184ApplicabilitySerial No.:7538256 7538257Viessmann LimitedHortonwood 30, TelfordShropshire, TF1 7YP, GBTelephone: +44 1952 675000Fax: +44 1952 675040

19Plug lHEA1 extension AlHN?1LAFloating contactWhen making this connection,remove jumper between 1 andL. B[{SDE[{DDE[{ADEAAFloating contactBEA1 exte

2Please follow these safety instructions closely to prevent accidents and mate-rial losses.Safety instructions explainedDangerThis symbol warns agains

20L?NL?NfÖSPaBJ230 V~Ö[{{]0-10Vf-]AU0-10 V++-0 – 1 V≙ No default set boiler watertemperature1 V≙ Set value 10 °C10 V≙ Set value 100 °CExternal blocki

21Plug lHExtension EA1 AlHN?1LAFloating contactWhen making this connection, re-move jumper between 1 and L. B[{SDE[{DDE[{ADEAAFloating contactBExten

22Fitting location for outside tempera-ture sensor North or north-westerly wall, 2 to2.5 m above ground level; in multistorey buildings, in the top h

23Power supply for accessories at plug lH (230 V~) Installation of boiler outside wetrooms:Connect the power supply of accesso-ries to the boiler con

24A buffer relay must be fitted if the currentflowing to the connected working parts(e.g. circulation pumps) is higher thanthe safety level of the rel

25Routing the connecting cables!Please noteIf connecting cables touch hotcomponents they will be dam-aged.Route and attach the powercables in such a w

26Remove the existing cable grommetwhen using cables with a larger cross-section (up to 7 14 mm). Secure thecable with cable grommet F integratedinto

27Insert programming unit (packed sepa-rately) into the control unit support.NoteThe programming unit can also be inser-ted into a wall mounting base

28For further information regarding the individual steps, see the page indicatedCommissioning stepsInspection stepsMaintenance steps Page• •1. Opening

29Commissioning stepsInspection stepsMaintenance steps Page• •21. Checking and adjusting the ignition and ionisationelectrodes...

3If you smell flue gasDangerFlue gas can lead to life threat-ening poisoning. Shut down the heating system. Ventilate the installation site. Close

30Opening the boiler2x1.2.3.4.Commissioning, inspection, maintenanceFurther details regarding the individual steps5585 174 GB

31Filling the heating systemFill water!Please noteUnsuitable fill water increasesthe level of deposits and corro-sion and may lead to boiler dam-age.

32A1. Check the pre-charge pressure of thediaphragm expansion vessel.2. Close the gas shut-off valve.3. Fill the heating system via boiler drain&am

33Selecting the language (if required) - only for weather-compen-sated control unitsAt the commissioning stage, the displayis in German (factory setti

34Venting the heating system1. Close the gas shut-off valve andswitch the control unit ON.2. Activate venting program (see follow-ing steps).NoteFor

35B CA1. Remove retaining clip A and pull outinsert B.2. Fill siphon C with water and reas-semble.NoteNever twist the inlet hose duringassembly. Route

36Gas type conversion (only for operation with LPG)A121. Set adjusting screw A on the gastrain to "2".2. Turn on the ON/OFF switch "8&

37 Yes Fan startsNoAfter approx. 51 s,fault F9 Check the fan, fanconnecting cables,power at the fanand fan control Yes Ign

38 Yes Automatic calibra-tion of the com-bustion controllerNoFault E3 Ensure adequateheat transfer.Press reset buttonR. Fault Eb Check gap

39A1. Close the gas shut-off valve.2. Release screw A inside test con-nector "PE" on the gas train, but donot remove it. Connect the pressu

4Repair work!Please noteRepairing components that fulfil asafety function can compromisethe safe operation of the sys-tem.Faulty components must berep

408. Shut down the boiler. Close the gasshut-off valve and remove the pres-sure gauge. Close test connector A with thescrew.9. DangerGas escaping fr

41Weather-compensated control unit Constant temperature control unitService menu1. Press OK and å simultaneously forapprox. 4 s.2. "Service funct

42Removing the burner and checking the burner gasketLKGFDHECBA1. Turn off the ON/OFF switch on thecontrol unit and the power supply.2. Close the gas

433. Pivot control unit A forwards.4. Remove cover panel B.5. Remove the electrical cables fromthe following components: Fan motor C Gas train D Igni

44Checking the burner gauze assembly and replacing it if requiredC B3xEF D4xA1. Remove electrodes A.2. Undo 3 retaining clips B on thermalinsulation r

45Checking the flue gas non-return deviceAB1. Undo 3 screws and remove fan A.2. Remove flue gas non-return deviceB.3. Check the damper and gasket fo

46Checking and adjusting the ignition and ionisation electrodes14±16+204+0,50A A B5+30AIgnition electrodesBIonisation electrode1. Check the electrode

47A1. Use a vacuum cleaner to removecombustion residues from heatingsurface A of the heat exchanger.2. Flush heating surface A withwater.3. Check co

48B CA1. Remove retaining clip A and pull outinsert B.2. Clean siphon C and check that thecondensate can drain freely.3. Fill siphon C with water and

49Remove residues of the leak detectionagent after testing.Checking combustion qualityThe electronic combustion controllerautomatically ensures optimu

5Service instructionsProduct informationIntended use...

506. Set the upper heating output (seepage 50).7. Check the CO2 content. Should theactual value deviate from the afore-mentioned ranges by more than

51System version 1One heating circuit without mixer A1, with or without DHW heating, with lowloss header1234659qP87ID: 4605521_1304_021Vitodens 200-W2

52Function/system components CodeSet GroupSystem with low loss header and with DHW circula-tion pump: Heating circuit pump A1 connected at AM1 exten

53qQExtension kit, mixer M2qWLow loss headerqEFlow temperature sensor, low lossheaderFunction/system components CodeSet GroupOperation with LPG 82:1

543Boiler circuit pump4Circulation pump for cylinder heat-ing5DHW cylinder6Cylinder temperature sensor7Heating circuit with mixer M2 (heat-ing circuit

55System version 4One heating circuit without mixer, one heating circuit with mixer M2 (withextension kit), one heating circuit with mixer M3 (with ex

56Function/system components CodeSet GroupOperation with LPG 82:1 "General"System only with two heating circuits with mixer withextension k

571Vitodens 200-W2Vitotronic 300-K3Outside temperature sensor4Boiler circuit pump5DHW cylinder6Cylinder temperature sensor7Circulation pump for cylind

580.2Outside temperature in °CBoiler water orFlow temperature in °CSlope2.42.62.83.03.23.4908070605040300 -5 -10 -15 -205102.02.2Set room temperature

59DHeating circuit pump "OFF" EHeating circuit pump "ON"Changing the standard set room temper-atureOperating instructionsReduced s

6Checking outputs (relay test)... 113TroubleshootingFault display...

60Connecting the control unit to the LONThe LON communication module mustbe plugged in (if installed as an acces-sory, see the LON communication mod-u

61Boiler control unit Vitotronic 200-H Vitotronic 200-H VitocomViessmann systemnumber.Code "98:1"Viessmann systemnumber.Code "98:1"

62Scanning and resetting the "Service" displayThe red fault indicator flashes when thelimits set in coding addresses "21" and"

63Fitting the front panel2.1.2x2.NoteEnsure the locking screws are fittedbefore operating.Commissioning, inspection, maintenanceFurther details regard

64Instructing the system userThe system installer should hand theoperating instructions to the system userand instruct the user in operating thesystem

65Calling up coding level 1 On weather-compensated controlunits, codes are displayed as plaintext. Codes that have not been assigneddue to the heati

66Weather-compensated control unit Constant temperature control unitResetting all codes to their delivered conditionSelect "Standard setting"

67Valueaddress00: ...SystemversionDescription7 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating c

68Coding in the delivered condition Possible changeSubscriber no.77:1 LON subscriber number(only for weather-com-pensated control units)77:2to77:99LON

69Select "Boiler" for weather-compensa-ted control units (see page 65).Select "2" for constant temperature con-trol unit (see page

7The appliance is only intended to beinstalled and operated in sealed unven-ted heating systems that comply withEN 12828, with due attention paid to t

70CodingCoding in the delivered condition Possible changeSet DHW temperature reheating suppression67:40 For solar DHW heating:set DHW temperature40 °C

71Coding in the delivered condition Possible changeCylinder maximum temperature08:60 Set DHW temperature(maximum cylinder tem-perature) 60 °C.08:10to0

72Select "Heating circuit ..." for weather-compensated control unit (seepage 65).Select "5" for constant temperature con-trol unit

73Coding in the delivered condition Possible changeExtended economy function adjusted outside temperatureA6:36 Extended economy con-trol disabled (onl

74Coding in the delivered condition Possible changeWeather-compensated/room temperature hook-upb0:0 With remote control:Heating mode/reducedmode: weat

75Coding in the delivered condition Possible changeMax. flow temperature heating circuitC6:74 Electronic maximum flowtemperature limited to74 °C (only

76Coding in the delivered condition Possible changeMin. pump speedE7:30 Minimum speed of thevariable speed heatingcircuit pump: 30 % ofmax. speed (onl

77Coding in the delivered condition Possible changePump control in "standby mode"F7:25 In "Standby mode", thecirculation pump in t

78Coding in the delivered condition Possible changeDuration set flow temperature increaseFb:60 Duration for raising theset boiler water tempera-ture o

79Calling up coding level 2 All codes are accessible in codinglevel 2. Codes that have not been assigneddue to the heating system equipmentlevel or

8!Please noteTo prevent appliance damage,connect all pipework free of loadand torque stress.40100160 160752197516908503804808751166160EALMOCB D FHPKN2

80Weather-compensated control unit Constant temperature control unitResetting all codes to their delivered conditionSelect "Standard setting"

81Valueaddress00: ...SystemversionDescription7 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating c

82Coding in the delivered condition Possible change34:0 Function output A2 at ex-tension AM1: DHW circu-lation pump34:1 Function output A2: heat-ing c

83Coding in the delivered condition Possible changeInternal circulation pumpfunction: coding address3E3A:5 Function input DE1: faultmessage input3A:6

84Coding in the delivered condition Possible changeDHW circulation pump run-time adjustment: codingaddress 3d3C:0 Function input DE3 atEA1 extension:

85Coding in the delivered condition Possible change3E:2 Boiler circuit pump is star-ted on "External blocking"signal3F:0 Boiler circuit pump

86Coding in the delivered condition Possible change54:2 With Vitosolic 200 (auto-matic recognition)54:4 With solar control moduleSM1 with auxiliary fu

87Coding in the delivered condition Possible change7F:1 Detached house (only forweather-compensatedcontrol units)7F:0 Apartment buildingSeparate adjus

88Coding in the delivered condition Possible change90:128 Time constant for calcu-lating adjusted outsidetemperature 21.3 h90:1to90:199Fast (low value

89Coding in the delivered condition Possible changeThe values specified in-side the control unit areused if there is no re-sponse from a subscriberaft

9LWithout connection sets (accesso-ries)MWith connection sets (accessories)NRecommended dimension (singleboiler system)ORecommended dimension (multibo

90Coding in the delivered condition Possible change08:... Maximum burner heatingoutput in kW in the caseof a multi boiler system08:0to08:199Maximum bu

91Coding in the delivered condition Possible change31:... Set speed in % of the in-ternal circulation pumpwhen operated as boilercircuit pump, specifi

92Coding in the delivered condition Possible change5E:0 Circulation pump for cyl-inder heating stays incontrol mode at signal"External blocking&q

93Coding in the delivered condition Possible change71:0 DHW circulation pump:"ON" according to timeprogram (only for weath-er-compensated co

94Coding in the delivered condition Possible change03:10 Temperature differentialfor the start of speed con-trol 10 K03:5to03:20Temperature differenti

95Coding in the delivered condition Possible changeNo flow rate captured inthe solar circuit, or flowrate too low.0d:1 Night circulation monitor-ing O

96Coding in the delivered condition Possible change20:2 Differential temperaturecontrol 220:3 Differential temperaturecontrol 2 and auxiliary func-tio

97Coding in the delivered condition Possible change26:3 Priority for DHW cylinder 2with cyclical heating26:4 Cyclical heating withoutpriority for one

98Coding in the delivered condition Possible changeA1:0 All possible settings atthe remote control can beaccessedA1:1 Only party mode can be setat the

99Coding in the delivered condition Possible changeA4:0 With frost protection (onlyfor weather-compensa-ted control units)A4:1 No frost protection; th