Viessmann WB1B Series Operations Instructions

VIESMANNInstallation and serviceinstructionsfor contractorsVitodens 100-WType WB1B, 9.0 to 35.0 kWWall mounted gas fired condensing boilerNatural gas

Installing connections on the water sideFor fittings on the heating water side and DHW side, see separate instal-lation instructions.A Heating flowB G

Safety valve connectionConnect safety valve drain A(7 15 mm) with visible outlet B tothe dewatering system or route withvisible outlet through the ext

Condensate connectionConnect condensate drain A with aslope and a pipe vent to the publicsewer.Observe the local waste water regula-tions.NoteFill the

Balanced flue connectionConnect the balanced flue.During installation and positioning ofthe flue gas system, observe buildingregulations part L and BS

!Please noteElectronic modules can bedamaged by electrostatic dis-charges.Touch earthed objects, such asheating or water pipes, to dis-charge static l

% Gas fired condensing boilers only:Cylinder temperature sensor (plugon the cable harness outside thecontrol unit)NoteGas fired condensing boiler with

Routing connecting cables and closing control unit!Please notePower cables will be damaged if they contact hot parts.When routing and securing power c

For further information regarding the individual steps, see the page indicatedCommissioning stepsInspection stepsMaintenance steps Page! ! !

Filling the heating system!Please noteUnsuitable fill water increases the level of deposits and corrosion andmay lead to boiler damage.&Thoroughly

4. Open shut-off valves A and (ifinstalled) B.5. Connect filling hose to valve Cand open valve C.6. Fill heating system. (Minimum sys-tem pressure >

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

Venting the boiler by flushing out (after venting system)1. Connect the drain hose on shut-offvalve A to a drain.2. Close shut-off valve B.3. Open val

2. Simultaneously turn rotary selec-tors "tw" and "tr" to their centralposition."SERV" appears on the display.3. Within

Checking the CO2 content1. Connect a flue gas analyser atflue gas port A on the boiler flueconnection.2. Start up the boiler and check fortightness.In

6. Adjust the lower output:Turn rotary selector "tr" to theleft control range.The display shows 1 bar for loweroutput.7. Test the CO2 conten

15. Shut the boiler down, remove fluegas analyser and close flue gasport A.16. Return rotary selectors "tw" and"rt" to their origi

5. Release gas supply pipe E fitting. 6. Undo four screws F and removethe burner.!Please noteTo prevent damage,never rest the burner on thegauze assem

1. Remove electrode B.2. Undo the three cheese-headscrews and remove thermal insu-lating ring C.3. Undo the four Torx screws andremove burner gauze as

Cleaning the heat exchanger!Please noteScratches on parts that are in contact with flue gas can lead to corrosion.Never use brushes to clean the heat

Checking the condensate drain and cleaning the siphon1. Check that the condensate candrain freely at the siphon.2. Remove all hoses from siphon A.3. R

Burner installation1. Install the burner and torquescrews A diagonally with 4.0 Nm.2. Insert new gasket and tighten thefittings on gas supply pipe B3.

Working on the system&When using gas as fuel, also closethe main gas shut-off valve andsafeguard against unauthorisedreopening.&Isolate the sy

Checking all gas equipment for tightness at operating pres-sureDangerEscaping gas leads to a risk ofexplosion.Check gas equipment for tight-ness.Fitti

Instructing the system userThe system installer must hand the operating instructions to the system userand instruct him/her in the operation of the sy

Display screen MeasuresControl unit is-sues a heat de-mandNoIncrease setvalue and ensureheat is drawn offYesFan startsNoafter approx. 51 sfault F9Chec

Faults are indicated by a flashing faultcode with fault symbol "U" on the dis-play.For fault code explanations see thefollowing table.Fault

Fault codeon the dis-playSystem character-isticsCause Measures5A Burner blocked Flow sensor leadbrokenCheck connections andlead; replace sensor ifrequ

Fault codeon the dis-playSystem character-isticsCause MeasuresF4 Burner in a faultstateNo flame signal ispresentCheck the ionisationelectrode and lead

Press resetTurn rotary selector "rt" less than2 s to "URESET", then back to the con-trol range.Fault messages on the display (cont

Removing front panel1. Release screws at the bottom ofthe boiler; do not remove comple-tely.2. Remove front panel.Outside temperature sensor1. Open th

2. Disconnect cables from outsidetemperature sensor.3. Check the sensor resistance andcompare it with the curve.4. Replace the sensor in case ofsevere

Boiler water temperature sensor1. Pull the leads from boiler watertemperature sensor A and checkthe resistance.2. Check the sensor resistance andcompa

Installation instructionsPreparing for installationProduct information ...

Checking cylinder temperature sensor (gas fired condensingboiler)1. Remove plugs % from the cableharness and check the resistance.2. Compare the senso

Checking the temperature limiterIf the burner control unit cannot be reset after a fault shutdown, although theboiler water temperature is below appro

Checking the outlet temperature sensor (gas fired conden-sing combi boiler)1. Pull the leads from outlet tempera-ture sensor A2. Check the sensor resi

Checking the flue gas temperature sensor1. Pull the leads from flue gas tem-perature sensor A.2. Check the sensor resistance andcompare it with the cu

Replacing flow limiter (gas fired condensing combi boiler)1. Drain the boiler from the DHW side.2. Pivot the control unit downwards.3. Undo screws A.4

Checking or replacing the plate-type heat exchanger (gasfired condensing combi boiler)E Heating water flowF Heating water returnG Cold waterH DHW1. Sh

5. Remove two screws C from theplate-type heat exchanger andremove plate-type heat exchangerD with gaskets.NoteDuring removal, small amounts ofwater m

Removing gas restrictor1. Pull power cable from gas train A.2. Remove union nut B.3. Undo three screws C and removegas train A.Converting from LPG to

4. Remove gas restrictor D from gastrain.5. Fit gas train A with new gasketsE and F.Fixing screw torque C: 3 Nm.Union nut torque B: 22 Nm.6. Remove or

4. Adjust the control unit to naturalgas or LPG by turning the rotaryselector "tw".The display shows:&"0" for operation with n

Vitodens 100-W, WB1BSet up for operation with natural gas.Preparing for installationPreparing the boiler installationDimensions and connectionsA Conde

In weather-compensated mode, theboiler water temperature is regulatedsubject to the outside temperature.Heating curve of weather-compensated control u

A Stepper motor diverter valveB Ignition/IonisationC Vitotrol 100, type UTAD Vitotrol 100, type RTE Vitotrol 100, type UTDF Mains input 230V/50HzConne

G Remote control (accessory)H Outside temperature sensor(accessory)K Time switch (accessories)L Gas pressure limiter (acces-sory)M PCB inside the cont

When ordering spare parts:Quote the part and serial no. (seetype plate) and the item number of therequired part (as per this parts list).Obtain standa

080 Cable harness stepper motor081 Fuse 2.5 A (slow) (10 pce.)082 Cable fixing102 Spray paint, Vitowhite103 Touch-up paint stick, Vitowhite104 Special

Parts lists (cont.)55Parts lists5354 802 GBService

Parts lists (cont.)56Parts lists5354 802 GB

Parts lists (cont.)57Parts lists5354 802 GBService

Parts lists (cont.)58Parts lists5354 802 GB

Rated voltage: 230 V~Rated frequency: 50 HzRated current: 2.0 A~Safety class: IProtection: IP X4 toEN 60529Permissible ambient temperature&during

C Gas fired condensing boiler:Cylinder flowGas fired condensing combi boil-er:DHWD Gas connectionE Gas fired condensing boiler:Cylinder returnGas fire

Rated output range in heatingmodeTV/TR 50/30 °CTV/TR 80/60 °CkWkW9 to 268.2 to23.711 to 2610.0 to23.711 to 2610.0 to23.7Rated thermal load range kW 8.

Declaration of conformity for the Vitodens 100-WWe, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm as soleresponsible body that the produc

BBoiler water temperature sensor. . . 39Burner gasket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Burner gauze assembly. . . . . . .

635354 802 GB

64Printed on environmentally friendly,chlorine-free bleached paper5354 802 GB Subject to technical modifications.Viessmann Werke GmbH&Co KGD-35107

Fitting the wall retainerA Installation template VitodensPreparing for installation (cont.)7Preparing for installation5354 802 GBInstallation

1. Position the supplied installationtemplate on the wall.2. Mark out the rawl plug holes.3. Drill 710 mm holes and insert thesupplied rawl plugs.4. F

Removing the front panel and mounting the boiler1. Release screws at the bottom ofthe boiler; do not remove comple-tely.2. Remove front panel.3. Hook