221742D.11.00Hepworth Heating Ltd.,Nottingham Road, Belper, Derbyshire. DE56 1JTGeneral/Sales enquiries:Tel: (01773) 824141 Fax: (01773) 820569One Co
10221742D3 Flue and VentilationAAFGEAGGGB,CB,CFFKKKCGLLUNDER CAR PORT etc.H,IJDFKMINIMUMSPACING2816Diagram 3.1MINIMUM SITING DIMENSIONS FORFANNED FLUE
11221742D4.1 General NotesThe boiler is intended for use in a sealed system only.4.2 Safety ValveThe safety valve is an integral part of the boiler.It
12221742DBOILERDOMESTICWATERHOTCOLD SUPPLYFILLINGPOINTOPTIONAL FILLINGKIT AVAILABLENo. 457120DRAINPOINT’A’FLOWCONTROLVALVEHEATINGCIRCUITRETURNADDITION
13221742DDiagram 6.16956GASSERVICECOCKHOTWATEROUTCOLDWATERSUPPLYINHEATINGFLOWHEATINGRETURNLEVERS (OPEN)COLD WATERSUPPLY IN/OUTSLOT (OPEN)GAS SERVICECO
14221742D7 Flue PreparationDiagram 7.175107639TOP OUTLET/REAR FLUETOP OUTLET/SIDE FLUE15mmVIEW ’B’VIEW ’B’15mmSTD./EXTD. TOP OUTLET FLUE PACK & 1
15221742D7.1 Flue Position and LengthDetermine flue application, length and terminal position beforestarting, refer to diagram 7.1.Note: The Standard
16221742D8 Mounting the boiler7011Diagram 8.2COMBUSTIONCHAMBER PANELRETAININGLUG (4)6984Diagram 8.3AIRPRESSURETUBE (3)ELECTRICALCONNECTIONSRETAINING L
17221742D8.2 Water and Gas ConnectionsLocate the boiler water pipes and gas supply pipe making surethe washers are retained in the tubing nuts onto th
18221742D7022Diagram 8.9UNION CONNECTIONDISCHARGEPIPE8 Mounting the boilerSAFETYVALVEDISCHARGE8080Diagram 8.8FITTED TO HYDRO BLOCKSERVICECOCKS (4)GAS
19221742D7308Diagram 8.11FANFLUEDUCTINGDiagram 8.10FLUECONNECTINGSLEEVEAIRDUCTFLUESPIGOTTAB (2)CUTOUT (2)8 Mounting the boiler7404Diagram 8.127307Diag
2221742DTesting and CertificationThis boiler is tested and certificated for safety and performance. It is therefore important that no alteration is m
20221742D9 Electrical Connections9.1 Supply Cable ConnectionCAUTION: To prevent an induced current from switching thecentral heating on, when not req
21221742D9 Electrical ConnectionsDiagram 9.37100JUNCTIONBOX3 AMPFUSELN230V~50HzPERMANENT MAINSSUPPLY230V~50HzROOM STAT.230V~50HzFROST STAT.TO BOILERRE
22221742DPlease ensure the “Benchmark” logbook is completed and leftwith the user.10.1 Filling Domestic Water CircuitCheck that the boiler is isolated
23221742D10 Commissioning6989Diagram 10.17649BURNERPRESSURETEST POINTRemove the pressure gauge and tighten the test point screw.Test for gas soundnes
24221742D10 Commissioning7020Diagram 10.47021SIDEPANELSECURINGSCREW (2)OUTERCASEFRONTSECURINGNUT (2)SECURINGSCREW (2)Diagram 10.37235SECURING SCREWSCU
25221742D11.1 Servicing or Replacing PartsTo ensure the continued efficient and safe operation of theboiler it is recommended that it is checked and s
26221742DBURNERRETAININGBRACKETPull bracketforward toremoveSECURINGLIPRIGHT HAND SIDE OF BURNERLEFT HAND SIDE OF BURNERPull burnerforward toremoveBURN
27221742D12.6 Spark GapCheck that the spark and sensing gaps are as shown in diagram12.6.12.7 Operational ChecksLight the boiler, carry out operationa
28221742D13.2 Clock/TimerIf the clock has failed it can be bypassed by disconnecting theplug and reconnecting the link, see diagram 13.1.Gain access b
29221742D13 Fault FindingTO TEST FOR COMPONENT OPERATION / FAILUREPower to the appliance :- Test for 230V~ across live (brown) and earth (yellow and
3221742D0I121314151617181920212223241234567891011AUTORUNMTWThFSSuPDAY HR MINPRIIntroductionPlease read these instructions and follow them carefully fo
30221742DYESYESYESYESYESYESYESYESYESYESYESFGEDCBAYESYESYESYESYESNONONONONONONONONONOCheck appliance installation andthat it is mechanically correct. C
31221742DCheck continuity of clock/timer harness, ensure an electrical supply is available at the clock,ensure that remote controls are calling for he
32221742D14.1 FanBefore starting refer to Section 11.Disconnect the two electrical connectors at the fan by pulling theboots not the wires, see diagra
33221742DSAFETY VALVEWASHER7085Diagram 14.5UNIONNUTDiagram 14.6SECURINGSCREW (2)RETAININGBRACKET(2)PRESSUREGAUGE7026FACSIA14 Replacement of PartsRemov
34221742D14 Replacement of PartsDiagram 14.86982CONTROLBOARDSENSINGLEADSUPPORTPOSTS (4)Diagram 14.9SOCKETHEADCAPSCREW(8)GAS SUPPLYPIPE)GASCONTROLVALVE
35221742DDiagram 14.117815LOW WATERPRESSURESWITCHRETAININGCLIP14.13 Diverter SwitchBefore starting refer to Section 11.Isolate the boiler from the ele
36221742D14 Replacement of PartsTHERMISTORDOMESTICHOT WATERELECTRICALCONNECTORDiagram 14.14WATER INLETFILTER7027Diagram 14.156993aSECURING PIN'O&
37221742D14.20 Hydro Block Assembly Left hand side(see diagram 14.18)Before starting refer to Section 11.Remove the two screws securing the controls c
38221742D14 Replacement of Parts14.24 Expansion VesselBefore starting refer to Section 11.Renewal of the expansion vessel requires the boiler to berem
39221742D14.25 Automatic Air VentBefore starting refer to Section 11.Remove the automatic air vent, see diagram 14.23.SLACKEN THE SMALL CAP ON THE AIR
4221742DTo Light the Boiler1. Check that all four isolating valves are open, the levers in linewith the valve body, see diagram 3.2. Open the contro
40221742D6980Diagram 14.27SECURINGSCREW (2)AIR PRESSURESWITCHELECTRICALCONNECTION (2)AIRPRESSURESWITCHTUBE (2)REDCLEAR14 Replacement of PartsFRONTINSU
41221742DDiagram 14.287005SECURINGSCREW (4)PLUG14 Replacement of PartsCLOCK/TIMERLNELECTRICALCONNECTION (4)14.30 Air Pressure SwitchBefore starting re
42221742DCONTROL BOARDROOM STATCLOCK TIMERMAINS SWITCHTHERMISTOR(CENTRALHEATING)N/ON/CCWATERPRESSURESWITCHAIR PRESSURESWITCHGAS VALVEDIVERTERSWITCHSEN
43221742D15 Spare PartsKey No Part No Description GC No15.1 Part IdentificationThe key number in diagram 15.1 and the first column of the listwill he
44221742DBecause of our constant endeavour for improvement, details may vary slightly from those shown in these instructions.Diagram 15.17007a15 Spare
5221742DDiagram 3GASSERVICECOCKHOTWATEROUTCOLDWATERSUPPLY INHEATINGFLOWHEATINGRETURNLEVER (OPEN)COLD WATERSUPPLY IN/OUTInstructions for UseSummer / Wi
6221742DInstructions for UseOther system pipework external to the boiler may require frostprotection.If the boiler is to be out of use for any long pe
7221742DABCDEFGHJKLMNP450 700 300 100 75 138 142 18 135 65 110 138 85 1031 General Data69421.1 InstallationMaterials and equipment should be fit for t
8221742D1.7 Gas SupplyThe gas installation shall be in accordance with the rules in forcein the countries of destination.The supply from the governed
9221742D25 ABOVE THE TOP OF THE BOILER CASEOR THE FLUE ELBOW IF FITTED55450150To achieve minimum "Installation" clearance of 5mm.The side pa
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