Hepworth Heating Ltd.,Nottingham Road, Belper, Derbyshire. DE56 1JTGeneral/Sales enquiries:Tel: (01773) 824141 Fax: (01773) 820569One Contact Local S
10221789B3 Water Systems3.5 Domestic Hot Water SystemGeneral. The domestic hot water service must be in accordancewith the current issue of BS5546, r
11221789B4 Flue and Appliance Preparation4.1 UnpackingOpen the carton containing the boiler, remove the end fittingwhich contains, wall mounting brack
12221789B4 Flue and Appliance PreparationDiagram 4.3Diagram 4.43797**CLCL168122122112112FIXINGPOINTSFIXINGPOINTSFLUEHOLECLEARANCEHOLE (2)42035119119**
13221789B5 Boiler Installation5.1 Mounting the BoilerRemove the boiler from the carton tray.If necessary, for a gravity domestic hot water system cut
14221789B5 Boiler InstallationDiagram 5.4TABLE 4.SHORT FLUE 100-280 CUTTING LENGTHS100-150150-200200-280WALLTHICKNESSAIR DUCTFLUE DUCT0 130 130 020 19
15221789B5 Boiler InstallationDiagram 5.4ADiagram 5.53803AIRDUCTSYELLOWSEALINGTAPEFLUE HOODASSEMBLYSEMI-TRANSPARENTSEALING TAPE3804FLUEDUCTFLUE DUCT/F
16221789B5 Boiler InstallationDiagram 5.78040SECURINGSCREWDiagram 5.8Diagram 5.9MULTI-FUNCTIONALCONTROL CABLEEARTHTERMINALCONTROLTHERMOSTATTHERMOSTATC
17221789B6 CommissioningDiagram 6.180422 to 4mm12 to 14mmA ELECTRICALCONTROL BOXB THERMOSTATCONTROL KNOBC GAS SERVICECOCK (SHOWN INOFF POSITION)D MULT
18221789B6 CommissioningDiagram 6.33811ENSURECASE ENGAGEMENTCASECONTROLSCOVER6.3 TestingTo check the operation of the flame failure device, turn the g
19221789B8 ServicingNotes: To ensure the continued efficient and safe operation ofthe boiler it is recommended that it is checked and serviced asnece
2221789BImportant InformationIntroduction 3Lighting the Boiler 4General Data 1 5Flue & Ventilation 2 7Water Systems 3 9Flue and Appliance Preparat
20221789B8 Servicing8.3 Cleaning Heat ExchangerPlace a sheet of paper in the base of the combustion chamber.Remove the baffles from the heat exchanger
21221789BNONONONONONONONONOYESYESYESYESYESYESYESYESYESCheck gas line - open all cocks,rectify any blockages, purge out any air. Does pilot light?Apply
22221789B9 Fault FindingDiagram 9.2Diagram 9.2ATHERMOCOUPLE FAULT FINDING4634Is the connection between thethermocouple and the multi-functionalcontrol
23221789B9 Fault FindingELECTRICAL FAULT FINDINGDiagram 9.39007Isolate the supply. Gain access to the controlbox, check all connections etc.Restore s
24221789B9 Fault FindingFUNCTIONAL FLOWDiagram 9.4Diagram 10.180503817PHIAL POCKETGLANDSEALCONTROL KNOBSECURINGSCREW (2)CAPILLARYSPLITPINCONTROLTHERMO
25221789B10 Replacement of PartsNote: To ease the removal of the piezo unit it is advisable totemporarily remove the boiler thermostat from the contro
26221789B10 Replacement of PartsDiagram 10.4Diagram 10.53821SOLENOIDCOVERMULTI-FUNCTIONALCONTROLSOLENOIDRETAININGCLIPSOLENOIDBRACKETELECTRICALCONNECTI
27221789B11 Spare PartsDiagram 11.11 429549 Multi-functional control 312 9262 208040 Joint ring 334 5923 205708 Injector - 40BF 351 9784 202432 Thermo
28221789BBecause of our constant endeavour for improvement, details may vary slightly from those shown in these instructions.
3221789BInstructions for UseIntroductionPlease read these instructions and follow them carefully for thesafe and economical use of your boiler.The Ult
4221789BInstructions for UseDiagram 2A PIEZO UNIT BUTTONB THERMOSTAT CONTROL KNOBC GAS SERVICE COCK(shown in off position)D CONTROL BUTTON (GAS)E VIEW
5221789B1 General DataImportant NoticeThis boiler is for use only on G20 gas.All dimensions are given in millimetres (except as noted).This boiler can
6221789B1 General Data1.5 Gas SupplyThe gas installation shall be in accordance with the currentissue of BS6891.The supply from the governed meter mus
7221789B1 General Data500mmAdditional clearance may berequired for installation65mm100mm6mm6mmFRONT VIEWTOP VIEW3792Diagram 1.2Note: Detailed recomme
8221789B2 Flue and Ventilation2.5 Boilers in a CompartmentWhere the installation of the boiler will be in an unusual position,special requirements are
9221789B3 Water SystemsThe installation of the boiler must comply with the requirementsof the current issue of BS6798.3.1 Frost ProtectionIf the posit
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