Baxi 910 Service Manual

© Baxi Heating UK Ltd 2014Platinum Combi HE A RangeGas Fired Wall Mounted CondensingCombination BoilerInstallation & Servicing InstructionsThese i

104.0 Technical Data© Baxi Heating UK Ltd 20140200 400 600 800 1000 12000.511.522.533.54Metre (wg)Flow Rate (l/h)Pump - Available Head055.54.54.1 P

115.0 Dimensions and Fixings© Baxi Heating UK Ltd 2014DimensionsA 780mmB 345mmC 450mmD 116mm Ø Min.E 185mm(207mm for 80/125mm flue systems)F 145mmG 13

126.0 System Details© Baxi Heating UK Ltd 20146.1 Information1. The Baxi Platinum Combi HE A Condensing CombinationBoiler is a ‘Water Byelaws Scheme

136.0 System Details© Baxi Heating UK Ltd 20146.5 System Filling and Pressurising1. A filling point connection on the central heating returnpipework m

146.0 System Details© Baxi Heating UK Ltd 20146.8 Domestic Hot Water Circuit (Fig. 7)1. All DHW circuits, connections, fittings, etc. should be fullyi

157.0 Site Requirements© Baxi Heating UK Ltd 20147.1 Location1. The boiler may be fitted to any suitable wall with the fluepassing through an outside

167.0 Site Requirement© Baxi Heating UK Ltd 20147.3 Ventilation of Compartments1. Where the appliance is installed in a cupboard orcompartment, no air

177.0 Site Requirements© Baxi Heating UK Ltd 20147.7 Condensate DrainFAILURE TO INSTALL THE CONDENSATEDISCHARGE PIPEWORK CORRECTLY WILL AFFECTTHE RELI

187.0 Site Requirements© Baxi Heating UK Ltd 20147.7 Condensate Drain (cont.)11. When discharging condensate into a soil stack or waste pipethe effect

197.0 Site Requirements© Baxi Heating UK Ltd 2014NIIGFMIAAFHJ,KDEHLikely flue positions requiring a flue terminal guard CRAIJ,KILSBTUFig. 12Fig. 11300

2© Baxi Heating UK Ltd 2014Natural GasBaxi Platinum Combi 24 HE AG.C.No47 075 31Baxi Platinum Combi 28 HE AG.C.No47 075 32Baxi Platinum Combi 33 HE AG

208.0 Flue Options© Baxi Heating UK Ltd 20148.1 Horizontal Flue Systems1. The standard flue is suitable only for horizontaltermination applications.2.

218.0 Flue Options© Baxi Heating UK Ltd 2014VerticalFluesVertical Flues(Twin Pipe)(i)(i)(ii)(ii)8.2 Twin & Vertical Flue Systems1. Maximum permiss

228.0 Flue Options© Baxi Heating UK Ltd 2014ABK,K1RDCNU,WSLHJMEGFP8.3 Flue AccessoriesA2Key Accessory Size Code NoFLUE GROUP AConcentric Flue System 1

238.0 Flue Options© Baxi Heating UK Ltd 20148.4 Twin Flue Duct Adaptor1. The kit allows connection of a twin flue system to theboiler adaptor.8.5 Twin

248.0 Flue Options© Baxi Heating UK Ltd 20148.6 For Roof Terminals1. In the case of a pitched roof 25 - 50 degrees, position the leadtile to replace/f

259.0 Plume Displacement© Baxi Heating UK Ltd 20149.1 Plume Displacement Kit (Fig. 14b)Kit No 5118638Content of kit1 0.9m 60/100 Concentric Flue1 1m 6

269.0 Plume Displacement© Baxi Heating UK Ltd 2014Concentric 60/100 Flue60Ø ExhaustXYFig. 1720246810121460 Ø Exhaust (metres) XConcentric 60/100 Flue

279.0 Plume Displacement© Baxi Heating UK Ltd 2014Min. 2 metresFig. 19Fig. 2430mm30mmFig. 21Fig. 23Fig. 22Adaptor9.3 General Fitting Notes1. Cut a hol

289.0 Plume Displacement© Baxi Heating UK Ltd 20149.3 General Fitting Notes (cont.)15. For aesthetic purposes it is permissible to route the60Ø exhaus

29© Baxi Heating UK Ltd 201410.0 Installation10.1 Unpacking & Initial PreparationThe gas supply, gas type and pressure must be checked forsuitabil

3Installer Notification Guidelines© Baxi Heating UK Ltd 2014Choose BuildingRegulations NotificationRouteContact your relevant LocalAuthority Building

30© Baxi Heating UK Ltd 2014Fig. 38Pressure Relief ValveDischarge PipeFig. 3510.0 Installation10.3 Fitting The Boiler1. Remove the sealing caps from t

3110.0 Installation© Baxi Heating UK Ltd 201410.6 Fitting The FlueHORIZONTAL TELESCOPIC FLUE1. There are two telescopic sections, the TerminalAssembly

3210.0 Installation© Baxi Heating UK Ltd 2014 10.6 Fitting the Flue (Cont)8. Adjust the two telescopic sections to dimension ‘Y’ (Fig. 42). Ensure t

3310.0 Installation© Baxi Heating UK Ltd 201410.7 Making The Electrical ConnectionsThe boiler is fitted with a 1.3m length of 3 core cable. Thiscan be

3411.0 Commissioning© Baxi Heating UK Ltd 2014PumpAutomatic AirVentPressure GaugeScrewbar01234Fig. 52Selector SwitchCentral Heating Temperature Contro

3511.0 Commissioning© Baxi Heating UK Ltd 2014Set Boiler to Maximum Rate(see 11.1.13)Allow the combustion to stabilise. Do not insert probe toavoid ‘f

36© Baxi Heating UK Ltd 201411.0 Commissioning11.3 Setting the TimerThe Electro-Mechanical Timer allows the central heatingsystem to be set every 15 m

3711.0 Commissioning© Baxi Heating UK Ltd 2014Selector SwitchDisplaybar0123412345PM78910111212345AM789101112GRASSLIN0Central Heating Temperature Contr

3812.0 Completion© Baxi Heating UK Ltd 201412.1 Completion 1. Instruct the user in the operation of the boiler andsystem including the integral timer,

3913.0 Servicing© Baxi Heating UK Ltd 2014Case Front PanelFig. 62Facia Panel SecuringScrewsFig. 63Inner DoorPanelFig. 64CondensateTrapSump13 .1 Annual

4Legislation© Baxi Heating UK Ltd 2014Codes of Practice - refer to the most recent versionThis company declare that no substances harmful to healthare

4013.0 Servicing© Baxi Heating UK Ltd 2014Fig. 66Cold WaterInlet TapBlanking CapThreadedBushFig. 67Fig. 65Hall EffectSensorHydraulic InletAssemblyFig.

4114.0 Changing Components© Baxi Heating UK Ltd 2014IMPORTANT: When changing components ensure thatboth the gas and electrical supplies to the boiler

4214.0 Changing Components© Baxi Heating UK Ltd 201414.3 Fan (Fig. 71)1. Undo the nut on the gas inlet pipe to the venturi (Fig. 49)and pull the sensi

4314.0 Changing Components© Baxi Heating UK Ltd 2014Fig. 74CoverBurnerGasketExtension Piece(Not on 33 & 40 models)CollectorVenturiHeatExchangerRea

4414.0 Changing Components© Baxi Heating UK Ltd 201414.8 Flue/Heat Exchanger Thermostat Sensor (Fig. 76)1. Ease the retaining tab on the sensor away a

4514.0 Changing Components© Baxi Heating UK Ltd 201414.13 Pump - Head Only (Fig. 79)1. Drain the primary circuit and remove the socket headscrews secu

4614.0 Changing Components© Baxi Heating UK Ltd 201414.16 Pressure Gauge (Figs. 82 & 83) 1. Drain the primary circuit and undo the nut on the

4714.0 Changing Components© Baxi Heating UK Ltd 201414.19 Plate Heat Exchanger (Fig. 86)1. Drain the primary circuit and remove the gas valve asdescri

48© Baxi Heating UK Ltd 201414.0 Changing Components14.23 Gas Valve (Fig. 91)IMPORTANT: After replacing the valve the CO2must bechecked and adjusted a

4915.0 Combustion Check© Baxi Heating UK Ltd 2014Selector SwitchDisplaybar0123412345PM78910111212345AM789101112GRASSLIN0Central Heating Temperature Co

5Safe Manual Handling© Baxi Heating UK Ltd 2014GeneralThe following advice should be adhered to, from when first handling the boiler to the final stag

5016.0 Electrical© Baxi Heating UK Ltd 2014- brown- black- blue- whitebrbkbw- green- green / yellow- redgg/yr Control PCBX2 X3X9X5011212 3344556789X11

5117.0 Short Parts List© Baxi Heating UK Ltd 2014Short Parts ListKey G.C. Description ManufacturersNo.No. Part No.311 Fan 5121447426 Motor 3 way Valve

5218.0 Fault Finding© Baxi Heating UK Ltd 2014NOTE: When instructed to turn theselector to the reset position turn theselector switch fully anticlockw

5318.0 Fault Finding© Baxi Heating UK Ltd 2014Refer to Section 16.0 “Illustrated Wiring Diagram” for position of terminals and componentsCentral Heati

5418.0 Fault Finding© Baxi Heating UK Ltd 2014Turn selector switch to The display illuminatesError 20, 28 or 50 flashingError 119 flashingB

5518.0 Fault Finding© Baxi Heating UK Ltd 2014Fault Finding Solutions SectionsIs there 230V at:Is there 230V at:Main terminals L and N Check electrica

5618.0 Fault Finding© Baxi Heating UK Ltd 2014Temperature sensors faulty.Cold resistance approximately10kΩ @ 25° C (DHW and CH sensors)20kΩ @ 25° C

57© Baxi Heating UK Ltd 201418.0 Fault FindingCheck and correct if necessary1. The mechanical set of the gas valve(CO2 values - see instruction)2. Fla

*All installations in England and Wales must be to Local Authority Building Control (LABC) either directly or through aCompetent Persons Scheme. A Bui

www.centralheating.co.ukIt is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed

6© Baxi Heating UK Ltd 2014CONTENTS1.0 Introduction 72.0 General Layout 83.0 Appliance Operation 94.0 Technical Data 105.0 Dimensions and Fixings 116.

© Baxi Heating UK Ltd 2014UK Comp No5121651 - Iss 15 - 2/14All descriptions and illustrations provided in this leaflet have beencarefully prepared but

71.0 Introduction© Baxi Heating UK Ltd 20141.1 Description1. The Baxi Platinum Combi HE A is a fully automatic gas firedwall mounted condensing combin

82.0 General Layout© Baxi Heating UK Ltd 20142.1 Layout1. Expansion Vessel2. Automatic Air Vent3. DHW Plate Heat Exchanger4. Circulation Pump5. Drain

93.0 Appliance Operation© Baxi Heating UK Ltd 20143.1 Central Heating Mode (Fig. 2)1. With a demand for heating, the pump circulates waterthrough the