Viessmann Type B2HA Instructions d'exploitation

Installation and serviceinstructionsfor contractorsVIESMANNVitodens 200-WType B2HA, B2KA, 3.2 to 35 kWGas council no. System boilers:41-819-32; 41-81

10Remove the toggle on the cold watershut-off valve (if installed) to preventanyone shutting it off manually.Shock arrestorIf draw-off points that cou

100Weather-compensated control unit Constant temperature control unitCalling up the service levelService menu:1. Press OK and å simultaneously forappr

101NoteDo not adjust menu item "Multi-boilersystem".The menu item turns a weather-compen-sated control unit into a constant tem-perature con

102Weather-compensated control unit Constant temperature control unitResetting operating dataSaved operating data (e.g. hours run) canbe reset to &quo

103For 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 sc

104Line (briefscan)Field 1 2 3 4 5 69: Heating circuit A1/HC1Heating circuit M2/HC2Heating circuit M3/HC3Remotecontrol0: With-out1: Vitotrol200A/200

105Brief scan for constant temperature control unitsService menu:1. Press OK and å simultaneously forapprox. 4 s."Ü" flashes on the display.

106Brief scan Displayd Variablespeedpump1: Wilo2: Grundfos3: AscoliSoftwareversionVariablespeed pump0: No varia-ble speedpumpE1SoftwareversionSo

107Brief scan Display Solar control module SM1F5Stagnation time of the solar thermal system in hF6Night circulation, solar thermal system (number)F7M

108Display ExplanationHtg circ pumpHC2ON Heating circuit pump output active (extension to heatingcircuit with mixer)Mixer HC2 Open "Mixer open&qu

109Display Explanation4 Diverter valve set to heating mode5 Diverter valve in central position (filling/draining)6 Diverter valve set to DHW mode10 In

112x6.7.5.3.2x2.1.4.Installation sequenceFitting the boiler and making connections5772 909 GBInstallation

110Weather-compensated control unitIn the event of a fault, red fault indicatorA flashes. " " flashes on the displayand "Fault" is

111Constant temperature control unitIn the event of a fault, red fault indicatorA flashes. The two-digit fault code and(subject to the type of fault)

112Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures10 X X Controls as ifthe outsidetemperaturewere 0 °CShort circuit,outsid

113Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures28 X X Regulates with-out flow tem-perature sen-sor (low lossheader)Lead

114Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures50 X X Onlytype B2HA:No DHW heat-ing by the boil-erShort circuitin the c

115Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause Measures98 X X Control mode Lead break,temperaturesensor /Check sensor /on solar

116Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresA7 X Control modeas per deliv-ered conditionProgrammingunit faultyReplac

117Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresbC X Control modewithout remotecontrolCommunica-tion error, re-mote cont

118Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresbE X Control modewithout remotecontrol Communica-tion error, re-mote con

119Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresC5 X X Control mode,max. pumpspeedCommunica-tion error, var-iable speedi

12Fitting the connectionsA B C D E FAHeating flow BDHW (combi boilers)Cylinder flow (system boiler)CGas connectionDCold water (combi boilers)Cylinder

120Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresCd X X Control mode Communica-tion errorVitocom 100,type GSM(KM BUS)Chec

121Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresdC X Control modewithout roominfluenceShort circuit,room temper-ature se

122Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresE1 X X Burner in a faultstateIonisationcurrent toohigh duringcalibration

123Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresE7 X X Burner in a faultstateIonisationcurrent toolow duringcalibrationC

124Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresEA X X Burner in a faultstateIonisationcurrent out-side permissi-ble ran

125Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresEd X X Burner in a faultstateInternal fault Replace controlunit.EE X X B

126Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresEF X X Burner in a faultstateFlame is lostimmediatelyafter it hasformed

127Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresF3 X X Burner in a faultstateFlame signalis alreadypresent atburner star

128Dis-playedfaultcodeConst. Weath.-comp.System char-acteristicsCause MeasuresFd X X Burner in a faultstateFault, burnercontrol unit Check ignitionele

129Checking the outside temperature sensorX310010-20 -10 0 10 20 30Temperature in °C6820406080200Resistance in kΩSensor type: NTC 10 kΩ1. Pull plug &

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

130Checking the boiler temperature sensor, cylinder temperaturesensor or low loss header flow temperature sensor%AX3TroubleshootingRepairs (cont.)5772

13110110 30 50 70 90 110Temperature in °C0.40.60.8246820Resistance in kΩSensor type: NTC 10 kΩ1. Boiler water temperature sensorPull the leads from

132Checking the outlet temperature sensor or comfort sensor(combi boilers only)BA10110 30 50 70 90 110Temperature in °C0.40.60.8246820Resistance in kΩ

133Checking the plate heat exchangerBF G H KEDCAFHeating returnGCold waterHHeating flowKDHW 1. Shut off and drain the boiler on theheating water and

13410. DangerEscaping gas leads to a riskof explosion.Check all gas equipment fortightness.Checking the flue gas temperature sensorThe flue gas tempe

135Fault "A3" during commissioningDuring commissioning, the control unitchecks whether the flue gas temperaturesensor is correctly positione

136Checking the fuseF1A1. Switch off the power.2. Release the side closures and pivotthe control unit down.3. Remove cover A.4. Check fuse F1 (see

137Checking the rotational direction ofthe mixer motorAfter being switched on, the boiler imple-ments a self-test. During this, the mixeris opened and

138Checking flow temperature sensorPressure drop curve10110 30 50 70 90 110Temperature in °C0.40.60.8246820Resistance in kΩSensor type: NTC 10 kΩ1. Re

1394 8°Cs AHeating modeThe selected set boiler water tempera-ture will be maintained when a demandis being raised by the room thermostatand the heatin

14A1. Seal gas shut-off valve A into thegas supply pipe.2. Carry out a tightness test.NoteOnly use suitable and approved leakdetection agents (EN 142

140In the delivered condition, the set boilerwater temperature is 20 K above the setDHW temperature (adjustable via codingaddress "60" in gr

141DHW heating with gas condensing combi boilerIf the flow switch detects that DHW isbeing drawn off (> 3 l/min), the burner,circulation pump and 3

142Internal extension H1The internal extension is integrated intothe control unit casing. The followingalternative functions can be connectedto relay

143Internal extension H2The internal extension is integrated intothe control unit casing. The followingalternative functions can be connectedto relay

144Extension AM1A1 Circulation pumpA2 Circulation pumpfÖPower supplyfÖ APower supply for additionalaccessoriesaVGKM BUSFunction descriptionExternal ex

145FunctionsOne of the following circulation pumpscan be connected to each of the connec-tions A1 and A2: Heating circuit pump for the heatingcircuit

146Extension EA1A1 PCBF1 Fuse/MCBDE1 Digital input 1DE2 Digital input 2DE3 Digital input 30 – 10 V 0 – 10 V inputfÖPower supplyfÖ APower supply for ad

147Digital data inputs DE1 to DE3The following functions can be connec-ted alternatively: External operating program change-over for each heating cir

148Analogue 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

149You can select which direction the heat-ing program changeover takes in codingaddress "d5" in the "Heating circuit"group:Heatin

15!Please noteElectronic assemblies can bedamaged by electrostatic dis-charge.Before beginning work, touchearthed objects, such as heatingor water pip

150External blocking and fault message input CodeInput DE1 3A:4Input DE2 3b:4Input DE3 3C:4The effect on the internal circulationpump is selected in c

151Fill programIn the delivered condition, the divertervalve is set to its central position, ena-bling the system to be filled completely.After the co

152Temperature profile 2: (ZV parquet and flooring technology) code "F1:2"Flowtemperature °CDays50403020101 5 10 15 20 25 30Temperature prof

153Temperature profile 6: Code "F1:6"Flowtemperature °C1 5 10 15 20 25 30Days504030201060Temperature profile 7: Code "F1:15"Flowte

154Example using the settings in the delivered conditionAB-20Outside temp. in °CBoiler water orflow temperature in °C8070605040300 -5 -10 -15510Set ro

155Example using the settings in the delivered condition100203030405060600700800900Set boiler water or flowtemperature in °CTime in hABCDAStart of ope

156The heating circuit allocation must beconfigured when commissioning theVitotrol.Heating circuit Vitotrol configuration200A/200 RF 300A/300 RFThe re

157Air ratio λ– CO2/O2 contentAir ratio λ O2 content(%)CO2 content(%) for natu-ral gas ECO2 content(%) for natu-ral gas LLCO2 content(%) for LPG P1.20

158A1 Main PCBX... Electrical interface§Boiler water temperature sen-sor$Only type B2KA:Outlet temperature sensoraAIonisation electrodeaGFlue gas temp

159dÖStepper motor for diverter valvefJTemperature limitergFIgnition unita-ÖFan motora-Ö AFan motor controlaVLOnly type B2KA:Flow switcha:ÖModulation

16L N230V~230V~59640409620351001LN2 11452132 15 428145AAJumperInstallation sequenceElectrical connections5772 909 GB

160A1 Main PCBA2 Power supply unitA3 OptolinkA4 Burner control unitA5 Programming unitA6 Coding cardDesignsConnection and wiring diagram – External co

161A7 Connection adaptorA8 LON communication module(Vitotronic 200)A9 Internal extension H1 or H2(accessories)S1 ON/OFF switchS2 Reset buttonX... Elec

162The following information is required: Serial no. (see type plate A) Assembly (from this parts list) Position number of the individual partwithin

163BDF ECA0003AType plateBCasing assemblyCHeat cell assemblywith burnerDControl unit assemblyParts listsOverview of the assemblies5772 909 GBService

164EHydraulic assemblywith Aqua-plateFMiscellaneous assemblyCasing0001 Control unit support0002 Front panel0003 Viessmann logo0004 Fixing clip (2 pce)

16500030004000400030002000600010005Heat cell0001 Gasket DN 600002 Boiler flue connection 60/1000003 Boiler flue connection plug0004 Flue gasketParts l

1660005 Flue gas temperature sensor0006 Heat exchanger0007 Condensate hose0008 O-ring 35.4 x 3.6 (5 pce)0009 Locking clip, condensate hose0010 Siphon0

16700150017000800090001000300150019001600140013001200090010 001100080010000700060017001800040003000500020001Parts lists Heat cell (cont.)5772 909 GBSe

1680001 Burner gasket (wearing part)0002 Thermal insulation ring0003 Cylinder burner gauze assembly0004 Burner gauze assembly gasket0005 Ignition elec

1690019001800040010000100040007001200130007001200130013000500060012001100140018000800160009000700170019001500040003001800020001Hydraulics type B2HA000

17Connections at plug 230 V~fÖPower supplylH Power supply for accessories External demand/blocking Room temperature control unit(remove jumper A wh

1700004 Clip Ø 8 (5 pce)0005 Thermal circuit breaker0006 Gasket set A 10 x 15 x 1.50007 Temperature sensor0008 Air vent valve G 3/80009 Heat exchanger

171000800220024002000110016002000040006002300110016000600230004000300060004000700110008000500220013000900120024001400250021001100180019001600170016001

172Aqua-plate type B2HA0001 Circulation pump motor0002 Linear stepper motor0003 Return unit0004 Adaptor for stepper motor0005 Screw 50 x 14 (5 pce)000

1730010 Drain hose 10 x 1.5 x 15000011 O-ring 20.6 x 2.6 (set)0012 Diaphragm grommet0013 Plug-in connector retainer (set)0014 Pressure gauge0015 Heati

174002000250008002200240011001600200004000600230011001600060023000400030006000400070011000800050022001300090012002400140021001100180019001600170016001

175Aqua-plate type B2KA0001 Circulation pump motor0002 Linear stepper motor0003 Return unit0004 Adaptor for stepper motor0005 Screw 50 x 14 (5 pce)000

1760001 Control unit0002 Control unit casing back panel0003 Coding card0004 Fuse 6.3 A (slow) (10 pce)0005 Fuse holder0006 Programming unit for consta

1770009000600020020001500050009001900110010002100030008001800170014000400050015001500010007001200220013Miscellaneous0001 Spray paint, Vitowhite0002 To

178000400050006000200030001Parts lists Miscellaneous (cont.)5772 909 GB

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

18Outside temperature sensor !For fitting the wireless outside tempera-ture sensor (wireless accessory):Wireless base station installationand service

180Rated voltage 230 VRated frequency 50 HzRated current 6 ASafety category IIP rating IP X 4 D toEN 60529Permissible ambient temperature During oper

181Combi boiler (type B2KA)Rated heating outputrange at TV/TR 50/30 °C kW 5.2 - 26(8.8 - 26)*25.2 - 30(8.8 - 30)*25.2 - 35(8.8 - 35)*2at TV/TR 8

182We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, declare as sole respon-sible body that the product Vitodens 200-W, type B2HA and B2KA, compl

183AAcknowledging a fault display...110Actuator test...107Assembly...16

184LLanguage selection...30LON...57 Fault monitoring...

1855772 909 GB

1865772 909 GB

1875772 909 GB

188ApplicabilitySerial No.:7454869 7454870 7454871 74548727454873 7454874Viessmann LimitedHortonwood 30, TelfordShropshire, TF1 7YP, GBTelephone: +44

19Plug lHExtension EA1AlHN?1LAFloating contact (when connecting,remove jumper across L and 1) B[{SDE[{DDE[{ADEAAFloating contactBExtension EA1Codes &

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 EA1AlHN?1LAFloating contact (when connecting,remove jumper across L and 1) B[{SDE[{DDE[{ADEAAFloating contactBExtension EA1Codes &

22Power supply for accessories at plug lH (230 V~)Where the boiler is installed in a wetarea, the power supply connection foraccessories must not be m

23A 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

24Routing the connecting cables!Please noteIf power cables touch hot compo-nents they will be damaged. When routing and securingcables/leads on site,

255.4.2.6.2x3.1.Insert programming unit (packed sepa-rately) into the control unit support.NoteThe programming unit can also be inser-ted into a wall

262x1.2.3.NoteFit the safety guard and ensure that thelocking screws are tightened beforeoperating.Installation sequenceFitting the front panel5772 90

27For further information regarding the individual steps, see the page indicatedCommissioning stepsInspection stepsMaintenance steps Page•1. Checking

28Commissioning stepsInspection stepsMaintenance steps Page• •20. Checking and adjusting the ignition and ionisationelectrodes...

29Filling the heating systemFill water!Please noteUnsuitable fill water increasesthe level of deposits and corro-sion and may lead to boiler dam-age.

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

30NoteIf the control unit has not beenswitched on prior to filling the system,then the servomotor of the divertervalve will still be in its central po

31Note on the automatic flue gas temperature sensor testWeather-compensated control unit Constant temperature control unitAs soon as the time and date

321. Close the shut-off valves on the heat-ing water side. If required, remove thesafety guard.2. Push the drain hose (supplied insidethe appliance)

33Activating the venting functionWeather-compensated control unit Constant temperature control unitService menu1. Press OK and å simultaneously forapp

34NoteNever twist the supply hose duringassembly. Route the drain hose with-out any bends and with a constantfall.Designating heating circuits - only

35Gas type conversion (only for operation with LPG)12A1. Set adjusting screw A on the gastrain to "2".2. Turn on the ON/OFF switch 8.3. Se

36A1. Close the gas shut-off valve.2. Undo screw A in test nipple "IN" onthe gas train but do not remove it, andconnect the pressure gauge.

37Supply pressure (flow pressure) ActionFor natural gas For LPGBelow 17.4 mbar Below 25 mbar Do not start the boiler. Notify your gassupply utility or

38 Yes Ionisation currentbuilds Symbol ANoFault EE Check the ionisa-tion electrode ad-justment and thegas line for air-locks. Yes

39Max. heating output settingThe maximum output for heating oper-ation can be limited. The limit is set viathe modulation range. The max. adjust-able

4Auxiliary components, spare andwearing parts!Please noteSpare and wearing parts thathave not been tested togetherwith the system can compromiseits fu

40Burner removalFGDE4xCBA1. Switch OFF the power supply and theON/OFF switch at the control unit.2. Close the gas shut-off valve and safe-guard agai

41Checking the burner gasket and burner gauze assemblyCheck burner gasket A and burnergauze assembly E for possible damageand replace if required.AC2x

424. Insert new burner gauze assemblyE with new gasket F and secure.!Please noteFasten screws tightly enoughto ensure the components arenot being dam

43Cleaning the heating surfaces!Please noteThere should be no scratches orother damage on the heatexchanger surface that comesinto contact with hot ga

44AB1. Check at the siphon that the conden-sate can drain freely.2. Remove retaining clip A and siphonB.3. Clean siphon B.4. Fill siphon B with water

45Fitting the burnerFGDE4xCBA1. Fit the burner and tighten screws Gdiagonally.!Please noteFasten screws tightly enoughto ensure the components arenot

46Checking the flow limiter (only for combi boilers)CBA1. Switch OFF the control unit, shut offthe cold water line and drain the DHWside of the boile

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

48A1. 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

49Matching the control unit to the heating systemThe control unit must be adjusted subjectto the system equipment level. To do this, select the relev

5Installation instructionsPreparing for installationIntended use...

50Function/system components CodeAdjust GroupOperation with LPG 82:1 "General"/1System with DHW circulation pump: DHW circulation pump c

519Heating circuit pump M2qPExtension kit for one heating circuitwith mixer M2Function/system components CodeAdjust GroupOperation with LPG 82:1 &quo

525Heating circuit without mixer A1(heating circuit 1)6Heating circuit with mixer M2(heating circuit 2)7Temperature limiter to restrict themaximum tem

53System version 4One heating circuit without mixer, one heating circuit with mixer M2 (withextension kit), one heating circuit with mixer M3 (with ex

54Function/system components CodeAdjust GroupOperation with LPG 82:1 "General"System only with two heating circuits with mixer withextensio

550.2Outside temperature in °CBoiler water orFlow temperature in °CSlope2.42.62.83.03.23.4908070605040300 -5 -10 -15 -205102.02.2Set room temperature

56DHeating circuit pump "OFF" EHeating circuit pump "ON"Changing the standard set room temper-atureOperating instructionsReduced s

57Connecting the control unit to the LON system - only for weather-compensated control unitsThe LON communication module(accessories) must be plugged

58Boiler control unit Vitotronic 200-H Vitotronic 200-H VitocomViessmann systemnumber,Code "98:1".Viessmann systemnumber,Code "98:1&quo

59Calling up and resetting the service displayThe red fault indicator flashes when thelimits set in coding addresses "21" and"23"

6TroubleshootingFault display... 110Fault codes.

60Calling up coding level 1 On weather-compensated controlunits, codes are displayed as plaintext. Codes that have not been assigneddue to the heati

61Weather-compensated control unit Constant temperature control unitResetting all codes to their delivered conditionSelect "Standard setting"

62Valueaddress00: ...SystemversionDescription7 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating c

63Coding in the delivered condition Possible changeSubscriber no.77:1 LON subscriber number(only for weather-com-pensated control units)77:2to77:99LON

64Select "Boiler" for weather-compensa-ted control units (see page 60).Select "2" for constant temperature con-trol units (see pag

65CodingCoding in the delivered condition Possible changeSet DHW temperature reheating suppression67:40 For solar DHW heating:Set DHW temperature40 °C

66Coding in the delivered condition Possible changeCylinder maximum temperature08:60 Set DHW temperature(maximum cylinder tem-perature) 60 °C.08:10to0

67Select "Heating circuit ..." for weather-compensated control units (seepage 60).Select "5" for constant temperature con-trol uni

68Coding in the delivered condition Possible changeExtended economy function adjusted outside temperatureA6:36 Extended economy con-trol disabled (onl

69Coding in the delivered condition Possible changeWeather-compensated/room temperature hook-upb0:0 With remote control:Heating mode/reducedmode: weat

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

70Coding in the delivered condition Possible changeMax. flow temperature heating circuitC6:74 Electronic maximum flowtemperature limit 74 °C(only for

71Coding in the delivered condition Possible changeMin. pump speedE7:30 Minimum speed of thevariable speed heatingcircuit pump: 30 % of themax. speed

72Coding in the delivered condition Possible changeStart temperature raisingF8:–5 Temperature limit for ter-minating reduced mode–5 °C, see example on

73Calling up coding level 2 All codes are accessible in codinglevel 2. Codes that have not been assigneddue to the heating system equipmentlevel or

74Weather-compensated control unit Constant temperature control unitResetting all codes to their delivered conditionSelect "Standard setting"

75Valueaddress00: ...SystemversionDescription7 4 One heating circuit with mixer M2 (heating circuit 2) and oneheating circuit with mixer M3 (heating c

76Coding 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

77Coding in the delivered condition Possible change3b:0 Function input DE2 at ex-tension EA1: Not as-signed3b:1 Function input DE2: Heat-ing program -

78Coding in the delivered condition Possible change3C:3 Function input DE3: Exter-nal blocking.Internal circulation pumpfunction: Coding address3E3C:4

79Coding in the delivered condition Possible change51:0 System with low lossheader: Internal circulation pumpalways starts when thereis a heat demand5

8!Please noteTo prevent equipment damage,connect all pipework free of loadand torque stress.3604507301925H850100 21550aA B C D EF KGAHeating flow Rp¾B

80Coding in the delivered condition Possible change6E:51to6E:100Display correction +0.1 Kto +5 K76:0 Without LON communi-cation module (only forweathe

81Coding in the delivered condition Possible change81:2 Use of the radio clock re-ceiver (automatic recogni-tion)81:3 With LON communicationmodule: Th

82Coding in the delivered condition Possible change98:1 Viessmann system num-ber (in conjunction withmonitoring several sys-tems via Vitocom 300)98:1t

83CodingCoding in the delivered condition Possible change01:1 Do not adjust (only forconstant temperaturecontrol units) 04:1 Minimum burner pausetim

84Coding in the delivered condition Possible change30:1 Internal variable speedcirculation pump (auto-matic adjustment)30:0 Internal circulation pumpw

85Coding in the delivered condition Possible change5b:0 DHW cylinder directlyconnected to the boiler 5b:1 DHW cylinder connecteddownstream of the low

86Coding in the delivered condition Possible change67:40 For solar DHW heating:Set DHW temperature40 °C. Reheating is sup-pressed above the selec-ted

87NoteThe solar group is only displayed if asolar control module, type SM1, is con-nected.CodingCoding in the delivered condition Possible change00:8

88Coding in the delivered condition Possible change08:60 Set DHW temperature(maximum cylinder tem-perature) 60 °C.08:10to08:90Set DHW temperature ad-j

89Coding in the delivered condition Possible change Target temperaturecontrol switched on(code "10:1"):Temperature at whichthe solar heated

9Rated heating outputkWDim. amm3.2 - 19.0 1366.5 - 26.0 1588.8 - 35.0 158NoteThis boiler (IP rating: IP X4D) isapproved for installation in wet roomsi

90Coding in the delivered condition Possible change22:8 Start temperature differ-ential with central heatingbackup (code "20:4" mustbe selec

91Coding in the delivered condition Possible changeAfter the selected cyclicalheating time for the DHWcylinder without priorityhas expired, the rise i

92Parameter 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

93Parameter addressA5:...With heating circuit pump logic function: Heating cir-cuit pump "OFF"1 AT > RTset + 5 K2 AT > RTset + 4 K3 AT

94Coding in the delivered condition Possible changeA8:1 Heating circuit with mixercreates a demand for theinternal circulation pump(only for weather-c

95Coding in the delivered condition Possible changeb2:64b5:0 With remote control: Noroom temperature-de-pendent heating circuitpump logic function (on

96Coding in the delivered condition Possible changed5:0 The external heating pro-gram changeoverswitches the heating pro-gram to "Constant opera-

97Coding in the delivered condition Possible changeE2:50 With remote control: Nodisplay correction for theactual room temperature(only for weather-com

98Coding in the delivered condition Possible changeF1:0 Screed drying disabled(only for weather-com-pensated control units).F1:1toF1:6Screed drying ad

99Coding in the delivered condition Possible changeObserve the setting ofcoding address "A3". (on-ly for weather-compensa-ted control units)