Viessmann WS3A Instructions d'exploitation

VIESMANNService instructionsfor heating engineersVitodens 333Type WS3A, 6.6 to 26.0 kWCompact gas fir ed condens ing boilernatural gas and LPG version

Pivot the control unit down to carry out commissioning andmaintenance work1. Open flap A.2. Releas e the side clo sures B andpivot control unit C forw

Internal extension H2The internal extension is integratedinto the control unit housing. Thecylinder lo ading pump i s connected torelay output sK.Set

External e xtension H1The external extension is connectedto the boiler control unit via the KMBUS. The follo wing functions can b econtrolled or proce

External e xtension H2The external extension is connectedto the boiler control unit via the KMBUS. The follo wing functions can b econtrolled or proce

External operating mode changeoverThe function External operating modechangeover is connected vi a inputaVD of the external extension. Withcoding addr

The changeover of operating moderemainsactiveaslongasthecontactremains closed, but no less than thedefault duration selected with codingaddress F2.Ext

Filling programNoteClose the gas shut-off valve whenoperating the filling program.In the delivered condition, the divertervalve is set to its central

Temperature profile: Diagram 1 (DIN 4725 part 4) code F1:1Temperature profile: Diagram 2 code F1:2Temperature profile: Diagram 3 code F1:3Control func

Temperature profile: Diagram 4 code F1:4Temperature profile: Diagram 5 code F1:5Temperature profile: Factory settings c ode F1:6 to F1:15Control funct

A1 Main PCB§ Boiler temperature sensor$ Cylinder temperature sensor% Loading temperature sensorConnection and wiring diagrams – internal connections10

aA Ionisa tion electrodeaG Flue gas temperature sensordÖ Step motor for d iverter valvefJ ThermocouplegF Ignition unita-Ö Fan m otoraNF Air pressure s

YesFan startsNoAfter approx.51 secondsCheck cables andplug-in conne c-tionsFaultF9YesDifferential pres -sure sensorenables start(0.75 V ac rosstermina

A1 Main PCBA2 Mains supply unitA3 OptolinkA4 Burner control unitConnection and wiring diagrams – external connections110Designs5692 548 GB

A5 Oper ating interfac eA6 Coding cardA7 Connection adaptorA8 LON communication moduleA9 Internal extension H1 or H2S1 ON/OFF switchS2 Reset button! O

Spare parts informationQuote the type and serial no. (see type plate) and the item no. of the requiredpart (as per this parts list).Obtain standard pa

153 Flue gas temperature sensor154 Thermocou ple155 Temperature sensor200 Side panel201 Front top panel202 Rear pan el, top203 Front panel, top204 Fro

Parts lists (cont.)114Parts lists5692 548 GB

Parts lists (cont.)115Parts lists5692 548 GB

Parts lists (cont.)116Parts lists5692 548 GB

Parts lists (cont.)117Parts lists5692 548 GB

Parts lists (cont.)118Parts lists5692 548 GB

Parts lists (cont.)119Parts lists5692 548 GB

YesOperational bur-nerStops below setboiler tempera-ture and immedi-ately restartsagainCheck flue gassystem for sound-ness (flue gasrecirculation),che

Setting and test values Set value Initial start-upDate:By:Static pressure mbar max. 57.5 mbarSupply pressure (flow pr essure)= for natural gas E mbar

Maintenance/ser-viceMaintenance/serviceMaintenance/serviceMaintenance/ser-viceCommissioning/service reports (cont.)121Commissioning/service reports569

Setting and test values S et value Ma intenance/serviceDate:By:Static pressure mbar max. 57.5 mbarSupply pressure (flow pr essure)= for natural gas E

Maintenance/ser-viceMaintenance/serviceMaintenance/serviceMaintenance/ser-viceCommissioning/service reports (cont.)123Commissioning/service reports569

Setting and test values S et value Ma intenance/serviceDate:By:Static pressure mbar max. 57.5 mbarSupply pressure (flow pr essure)= for natural gas E

Maintenance/ser-viceMaintenance/serviceMaintenance/serviceMaintenance/ser-viceCommissioning/service reports (cont.)125Commissioning/service reports569

Rated voltage: 230 V~Ratedfrequency: 50HzRated current : 6.3 A~Safety class: IProtection level : IP X 4 D toEN 60529Permissible ambient temperature&am

Declaration of conformity for Vitodens 333We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as soleresponsible b ody, that the produ ct

We, Viessmann Werke GmbH & Co KG, D-35107 Al lendorf, confirm th at the fol-lowing product meets the NOx limits specified by 1st BImSchV Paragraph

AAdjusting the room temperature... 35BBoiler temperature sensor... 85Brief scans... 63Burner gauze assembly.

5. Record the gas type in the commis-sioning/service report on p age120.Checking static and supply pressureDangerHigher CO emis sions can le ad to poi

OOperating mode changeover... 103Outside temperature sensor... 84PParts list... 112Plate heat exchanger...

1315692 548 GB

ApplicabilityCompact gas fired condensing boi-lerType WS3A6.6to26kWfrom serial no.7177 362 3 00001132Printed on environmentally-friendly,chlorine-free

6. Check the supply (flow) pressure; itshould be&20 mbar for natura l gas,&50 mbar for LPG.NoteUse suitable test equ ipment with aresolution o

Checking the CO2 settingsVitodens 333 is set up in the factory for natural gas E, and can be converted tonatural gas LL or LPG P using a conversion ki

1. Connect a flue gas analyser at theflue gas aperture A on the boileradaptor.2. Open the gas shut-off valve, com-mission the boiler and create a heat

7. Check the CO2 content. Should theactual value deviate by more than1 % from the above range, imple-ment steps from p age 15 (possib lyreplace the bu

Checking the balanced flue system for soundness (ann ulargap check)A Combustion air apertureFor balanced flue systems testedtogether with the gas fire

Removing the burner and checking the burner gasket(replace gasket every two years)1. Switch OFF the control unit ON/OFF switch and the m ains electri-

Please follow these safety instructions closely to prevent accidents andmaterial losses.Safety instructions explainedDangerThis symbol warns against t

Checking the burner gauze assemblyReplace the bur ner gauze ass embly ifthe wire mesh is damaged.1. Remove electrodes A.2. Remove thermal insulation r

Checking and adjusting the ignition and ionisation electro-desA Ignition electrodes B Ionisation electrode1. Check the electrodes for wear andcontamin

Cleaning the combustion chamber/Cleaning the heating sur-faces and installing the burner1. If required, clean combustionchamber and he ating surfaces

4. Check th e gas connections fo rsoundness.DangerEscaping gas leads to a riskof explosion.Check all fitting s for sound-ness.5. Connect the electrica

1. Remove cover A.2. Pull earth cable B from conn ectingtab C.3. Connect the test equipment (up to 5mA) in series between co nnectingtab C and earth c

5. Remove ha rd deposits that cann otbe removed by a hi gh pressurecleaner, with a chemical cleaningagent.!Important informationNever use hydr ochlori

Checking all gas equipment for soundness at operating pres-sureDangerEscaping gas leads to a risk ofexplosion.Check gas equipment forsoundness.Checkin

4. After testing, press d.5. Record the actual value in the ser-vice report.Matching the control unit to the heating systemNoteThe control unit must b

Required coding AddressOperation with natural gas (as delivered condition)or1E:0Operation with LPG 1E:1System design 2With one heating circuit with mi

Required coding AddressOperation with LPG 1E:1System design 3With one heating circuit without mixer A1 and one heating circuit withmixer M2NoteThe vol

If you smell flue gasDangerFlue gas may lead to life-threa-tening pois oning.&Shut down the heating sys-tem.&Ventilate the boiler room.&Cl

Required coding AddressOperation with LPG 1E:1System design 4With one heating circuit without mixer A1 and one heating circuit withmixer M2 with syste

System design 5With one heating circuit with mixer M2 (with extension kit), one heating cir-cuit with mixer (with Vitotronic 050) and low loss header!

Connecting the control unit to the LON system (only forweather-compensated control units)The LON communication module (accessory) must be plugged in.I

Boiler c ontrolunitVitotronic 050 Vitotronic 050 VitocomSent time via LONCode 7b: 1Time received viaLONSet code 81: 3Time received viaLONSet code 81:

5. Press L and d simultaneouslyfor approx. 1 secon d. User checkcompleted.Adjusting heating curves (only for weather-compensatedcontrol units)The heat

Changing slope and levelA Changing the slopeB Changing the level1. Modifytheslopeincode1withcod-ing address d3 (see page 39).Adjustablevalue2to35(equa

Example 1: Mod ifying the stand ardroomtemperaturefrom20°Cto26°CA Boiler water or flow temperature in°CB Outside temperature in ° CC Set room temperat

Example 2: M odifying the redu cedroom temperature fro m 5 °C to 14 °CA Boiler water or flow temperaturein °CB Outside temperature in ° CC Set room te

1. Press c.Maintenance scan i s activated.2. Scan maintenance messageswith a or b.3. Press d, for weather-compen-sated control units also confirm thed

Call up code 11. Press K and L simultaneouslyfor approx. 2 secon ds.2. Selecttherequiredcodingaddresswith a or b; the addr ess flashes.Confirm with d;

Initial start-up, inspection, maintenanceSteps - initial start-up, inspection and maintenance ... 5Further details r

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeGas type1E:0 Operation with naturalgas1E:1 Operati

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeMax. flow. temp. M2C6:75*1Electronic max imumflow

4. Press L and G simultan eouslyfor approx. 1 secon d.Coding is terminated.Overall summaryThecodingaddressesaregroupedinaccordancewiththefollowingfunc

CodesCoding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeSystem design00 :2 System design 1:1heatingci

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change25:0*1No recognition of out-side temperature sen-s

Coding Internalcircula-tion pumpHeating cir-cuit pumpHeating cir-cuit withoutmixerHeating circuitpumpHeating circuitwith mixerCylinder loadingpump2Con

Coding InternalcirculationpumpHeating cir-cuit pumpHeating cir-cuit withoutmixerHeating cir-cuit pumpHeating cir-cuit withmixerCylin der load ing pum

Coding InternalcirculationpumpHeating cir-cuit pumpHeating cir-cuit withoutmixerHeating cir-cuit pumpHeating cir-cuit withmixerCylin der load ing pum

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change59:0 DHW cylinder loading:Starting point -2 .5 KSt

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change71:0*1DHW circulationpump: According toDHW time pr

For further instructions on individual steps, see pages indicatedCommissioning stepsInspection stepsMaintenance steps Page!!!• 1.

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change7F:1*1Detached house 7F:0 Multi- occupancy houseSe

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change91:0*1No external operatingmode changeover viaexte

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change9C:20*1Monitoring LON usersWhen there i s norespon

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeA3:2 Outside temperaturebelow 1 °C: Heati ng cir-c

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeBoiler circuit, mixer circuitA4:0*1With frost prot

Parameter addressA5:...With heating circuit pump logic function: Heatingcircuit pump OFF, if7toAT > RTSet -1K15 AT > RTSet -9KCoding inthe asdel

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeA7:0*1Without mixer econ-omy functionA7:1 With mix

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeb0:0*1With remote control:Heating mode/r educedmod

Parameteraddress b5:...With heating circuit pump logic function: Heating cir-cuit pump OFF, if7: active RTActual >RTSet -1K;passiveRTActual <RTS

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changeNo display correction ofthe actual room tem-peratu

Commissioning stepsInspection stepsMaintenance steps Page!!!•• 20. Cleaning the combustion chamber/Cleaning theheating surfaces a

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible changemust contain the follow-ing heat-up details:&H

Coding inthe asdeliveredconditionAddress:valueFunction mode CodingchangeAddress:valuePossible change20 minutesF6:0*6*6In the "DHW only"opera

Function Key combination Exit PageTemperatu res, boiler cod -ing card an d brief scansPress K and G simulta-neously for a pprox.2 secondsPress d.63Rel

Weather-compensated control unit1. Press K and G simultan eouslyfor approx. 2 secon ds.2. Select the required scan with aand b.3. Press d.The followin

Display screenBriefscan2 Systemdesign1to6Display in accor-dance with the rele-vant designDisplayKM BUSusersMax. demand temperature3 N/A Softwareversio

Display screenBriefscanHeating circuit 1(boiler circuit A1)Heating circuit 2(mixer circuit M2)7 N/A N/A Remotecontrol0: excl.1: Vito-trol2002: Vito-tr

Display screenBrief scan0Systemdesign, dis-play inaccordanc ewith thedesignSoftware versionControl unitSoftwareversionOperatinginterface1Softwareversi

Display screenBrief scand Variabl espeedpump0: excl.1: Wilo2: Grund-fosSoftwareversionvariablespeed pumpTesting outputs (relay test)Weather-compensate

Display ExplanationsSolar pump ON VitosolicConstant temperature control units1. Press K and d simultaneouslyfor approx. 2 secon ds.Relaytestisactivate

Weather-compensated control unit1. For two heating circuits – selectheating circuit:&Press a.1r flashes on the di splay.&Select heating circui

Filling t he heating system1. Check th e charge pressur e of thediaphragm expansion vessel.2. Close the gas shut-off v alve.3.!Important informationUn

Operating condition display(subject to system equip-ment level)ExplanationsDateBurner OFF or ONInt. pump OFF or ON Output 20Int. output OFF or ON Inte

Operating condition display (sub-ject to system equipment leve l)Explanatio ns030529 Burner starts001417 h Hours run - solar circuit pump002850 Solar

Thelast10faultsaresavedandmaybecalledup.1. Press G and d simu ltaneousl yfor approx. 2 secon ds.2. Call up th e individu al fault code swith a or b.Or

Control unit faults1. Find curr ent fault with c.2. Select additional fault codeswith a and b.3. Acknowledge faultThefaultcanbeacknowledgedwith d . Th

4. E in the display indicates that theburner control unit is locked out.After the fault has been removed,acknowledge by pressing reset E.Fault display

Constant temperature control unitsNoteThefaultcanbeacknowledgedwith d . The fault message i n the dis-play will be hidden, but the red faultindicator

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause Remedy30 X X BurnerblockedBoiler temperaturesensor shor ted outCheck theboiler

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause Remedy9C X X Cylinder tempera-ture sensor leadbreak9F X X ControlmodeSolar con

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause RemedybC X Controlmode with-out remotecontrolCommunicationfault - Vitotrolremo

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause RemedyC6 X Controlmode,max. pumpspeedCommunicationfault - variablespeed heatin

Venting the boiler1. Close t he shut-off valves on theheating water side.2. Connect the drain hose on valve Awith a drain outlet.3. Open valve A andfi

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause Remedydd X Room tempe raturesensor hea ting cir-cuit A1 lead breakCheck theroo

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause RemedyF2 X X Burner infault stateTemperatur e limiterhas respondedCheck thehea

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause RemedyF7 X X BurnerblockedDifferential pres-sure sensor faultyCheck the dif-fe

Fault codein the dis-playConst. Weat-h.comp.Systemcharacter-isticsCause RemedyFE X X BurnerblockedStrong interference(EMC) field nearby;alternatively

Checking the outside temperature sensor (weather-compen-sated control unit)1. Pull plug X3 from the control unit.2. Test the resistance of the outside

Check the boiler temperature sensor, cylinder temperaturesensor or the flow temperature sensor for low loss header1. Boiler t emperature sensor: Pull

2. Check the sensor resistance andcompare actual values with thecurve.3. Replac e the sensor in ca se ofsevere deviation.DangerThe boiler temperature

3. Replac e the sensor in ca se ofsevere deviation.DangerThe loading temperaturesensor is im mersed in theheating water (risk of scald-ing).Drain the

1. Pull the l eads from the flu e gastemperature sensor A .2. Check the sensor resistance andcompare actual values with thecurve.3. Replac e the senso

Checking plate heat exchanger1. Shut off and drain the boiler on theprimary and the s econdary side .2. Releas e the side clo sures andpivot the contr

Filling the siphon with water1. Remov e the retaining c lip andsiphon A.2. Fillthesiphonwithwater.3. Fit siphon A andsecurewiththeretaining clip.Langu

Checking the thermocou pleIf the burner control unit cannot bereset after a fault shutdown, althoughthe boiler water temperature is belowapprox. 90 °C

Checking O-rings: 1. Pull off the electrical plug A.2. Remove sensor B by pulling itupwards.3. Ensure that both O-ringsC areproperly in serted into ap

Checking the fuse1. Switch OFF the mains power.2. Releas e the lateral clo sures andpivot the control unit down.3. Remove cover A.4. Check fuse F1.Rep

Extension kit for heating circuit with mixerChecking the rotational direction of the mixer motorA Rotational direction switchB ON/OFF switch 81. Switc

Checking Vitotronic 050 (accessory)Vitotronic 050 is connected with the control unit via the LON system. To test theconnection, i mplement a user chec

Heating modeThe set boiler water temperature willbe maintained in the Central heatingand DHW heating G program, whena demand is raised by the room tem

A Heating programsB Comfort modeC InformationD Basic settingsE Confirmation/acknowledgem entF Setting valuesG DHW temperatureH Emissions test function

Heating modeThe control unit dete rmines a set boi -ler water temperature subject to out-side temperature or room temperature(if a room temperature-de

A Heating circuit time programB DHW time programand DHW circulati on (if connectedto the control unit)C Holiday programD InformationE Heating programs

Internal extension H1The internal extension is integratedinto the control unit housing. Thecylinder lo ading pump i s connected tothe relay output sK.