Baxi Potterton 24 Service Manual

© Baxi Heating UK Ltd 2014Installation & Service InstructionsThese instructions include the Benchmark CommissioningChecklist and should be left wi

10© Baxi Heating UK Ltd 2014This value is used in the UK Government’s Standard Assessment Procedure(SAP) for energy rating of dwellings. The test data

115.0 Dimensions and Fixings© Baxi Heating UK Ltd 2014360° Orientation Flue Ø 100mmDCBAEGFAt least 1.5°HHeatingReturn(22mm)HeatingFlow(22mm)Pressure R

126.0 System Details© Baxi Heating UK Ltd 20146.1 Central Heating Circuit1. The appliance is suitable for fully pumped SEALED SYSTEMSONLY. Treatment o

136.0 System Details© Baxi Heating UK Ltd 20146.4 System Filling and Pressurising1. A filling point connection on the central heating returnpipework m

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

157.0 Site Requirements© Baxi Heating UK Ltd 20147.3 Ventilation of Compartments1. Where the appliance is installed in a cupboard orcompartment, no ai

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

177.0 Site Requirement© Baxi Heating UK Ltd 20147.7 Condensate Drain (cont.)11. When discharging condensate into a soil stack or wastepipe the effects

187.0 Site Requirent© Baxi Heating UK Ltd 20147.7 Condensate Drain (cont.)12. A boiler discharge pump is available, ‘MULTIFIT’ part no. 720648301. Thi

197.0 Site Requirements© Baxi Heating UK Ltd 20147.8 FlueNOTE: Due to the nature of the boiler a plume of watervapour will be discharged from the flue

2© Baxi Heating UK Ltd 2014© Baxi Heating UK Ltd 2014 All rights reserved. No part of this publication maybe reproduced or transmitted in any form or

208.0 Flue Options© Baxi Heating UK Ltd 2014HorizontalFlues(ii)(i)Plume Displacement 60 /100 dia Kit1M Extensions 45° & 93° bends arealso availabl

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

228.0 Flue Options© Baxi Heating UK Ltd 2014Key Accessory Size Code NoFLUE GROUP AConcentric Flue System 100mm diameterA Horizontal Flue Terminal (inc

238.0 Flue Options© Baxi Heating UK Ltd 2014Flue Duct ConnectionBoiler AdaptorAir Duct Connection8.4 Twin Flue Duct Adaptor1. The kit allows connectio

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. 14)Kit No 5118638 (5121367 without elbow)Content of kit1 0.9m 60/10

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

27© Baxi Heating UK Ltd 20149.0 Plume DisplacementMin. 2 metresFig. 1950mmFlue TrimPosition of ‘Jubilee’ ClipscrewFig. 2430mm30mmFig. 21Fig. 23Fig. 20

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

3010.0 Installation© Baxi Heating UK Ltd 201410.3 Fitting The Boiler1. Lift the boiler using the Lifting Points as shown by theshaded areas (Fig. 34).

3110.0 Installation© Baxi Heating UK Ltd 2014Wall Thickness(X)Wall Thickness(X)Flue ElbowFig. 36Fig. 37AdaptorApply Lubricant forease of assembly.Ensu

3210.0 Installation© Baxi Heating UK Ltd 2014Slots at bottomFig. 42Fig. 43Apply Lubricant forease of assembly.Ensure Flue is fullyengaged into FlueElb

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

3411.0 Commissioning© Baxi Heating UK Ltd 2014PumpAutomatic AirVentPressure GaugeScrewbar01234Fig. 50Selector SwitchCentral Heating Temperature Contro

3511.0 Commissioning© Baxi Heating UK Ltd 2014Set Boiler to Maximum Rate(see 11.1.11)Allow the combustion to stabilise. Do not insert probe toavoid ‘f

3611.0 Commissioning© Baxi Heating UK Ltd 2014Selector SwitchDisplayResetbar01234Central Heating Temperature ControlCalibration ControlFig. 54Fig. 55F

3712.0 Completion© Baxi Heating UK Ltd 201412.1 Completion 1. Instruct the user in the operation of the boiler andsystem including extenal controls, e

38© Baxi Heating UK Ltd 2014Case Front PanelFig. 60Facia Panel SecuringScrewsFig. 61Inner DoorPanelFig. 62CondensateTrapSump13.0 Servicing13 .1 Annual

3913.0 Servicing© Baxi Heating UK Ltd 2014Fig. 64Fig. 63Gas Inlet PipeVenturiInjectorFan, Collector and CoverAssemblyElectrodeLeads13.2 Annual Servici

4Legislation© Baxi Heating UK Ltd 2014Codes of Practice - refer to the most recent versionIMPORTANT - Installation, Commissioning, Service & Repai

4014.0 Changing Components© Baxi Heating UK Ltd 2014IMPORTANT: When changing components ensure thatboth the gas and electrical supplies to the boiler

4114.0 Changing Components© Baxi Heating UK Ltd 201414.3 Fan (Fig. 67)1. Undo the nut on the gas inlet pipe to the venturi (Fig. 68)and pull the sensi

4214.0 Changing Components© Baxi Heating UK Ltd 2014Fig. 70CoverBurnerGasketExtension Piece(Not on 32 model)CollectorVenturiHeatExchangerRearInsulatio

4314.0 Changing Components© Baxi Heating UK Ltd 201414.8 Flue/Heat Exchanger Thermostat Sensor (Fig. 72)1. Ease the retaining tab on the sensor away a

4414.0 Changing Components© Baxi Heating UK Ltd 201414.13 Pump - Head Only (Fig. 76)1. Drain the primary circuit and remove the socket headscrews secu

4514.0 Changing Components© Baxi Heating UK Ltd 201414.16 Pressure Gauge (Figs. 79 & 80) 1. Drain the primary circuit and undo the nut on the

4614.0 Changing Components© Baxi Heating UK Ltd 201414.18 P.C.B. (Fig. 82)1. Note the settings of the temperature control knobs,rotate them fully anti

4714.0 Changing Components© Baxi Heating UK Ltd 201414.20 Gas Valve (Fig. 84)IMPORTANT: After replacing the valve the CO2must bechecked and adjusted a

4815.0 Setting the Gas Valve© Baxi Heating UK Ltd 2014Selector SwitchDisplayResetbar01234Central Heating Temperature ControlCalibration ControlFig. 88

4916.0 Electrical© Baxi Heating UK Ltd 2014- brown- black- blue- whitebrbkbw- green- green / yellow- redgg/yr Control PCBX2 X3X5011212 3344556789X112C

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

5017.0 Short Parts List© Baxi Heating UK Ltd 2014Short Parts ListKey G.C. Description ManufacturersNo.No. Part No.302 Flue Thermostat 5114747306 Burne

5118.0 Fault Finding© Baxi Heating UK Ltd 2014NOTE: When instructed to turn theselector to the reset position turn theselector switch fully anticlockw

5218.0 Fault Finding© Baxi Heating UK Ltd 2014Refer to Section 16.0 “Illustrated Wiring Diagram” for position of terminals and componentsCentral Heati

5318.0 Fault Finding© Baxi Heating UK Ltd 2014Fault Finding Solutions SectionsIs there 230V at:Is there 230V at:Main terminals L and N Check electrica

5418.0 Fault Finding© Baxi Heating UK Ltd 2014Temperature sensors faulty.Cold resistance approximately10kΩ @ 25° C (DHW and CH sensors)20kΩ @ 25° C

55© 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

5619.0 Pages for Notes© Baxi Heating UK Ltd 2014

5719.0 Pages for Notes© Baxi Heating UK Ltd 2014

*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 2014Comp No5114442 - Iss 12 - 2/14All descriptions and illustrations provided in this leaflet have been carefully preparedbut w

71.0 Introduction© Baxi Heating UK Ltd 20141.1 Description1. The Potterton Promax System HE Plus A is a fully automaticgas fired wall mounted condensi

82.0 General Layout© Baxi Heating UK Ltd 20142.1 Layout1. Expansion Vessel2. Automatic Air Vent3. Circulation Pump4. Drain Off Point5. Pressure Relief

93.0 Appliance Operation© Baxi Heating UK Ltd 20143.1 Operating Mode (Fig. 2)1. With a demand for heating or hot water, the pumpcirculates water throu