Potthof & Co 33kw, 24kw, 28kw manual Electrical, Illustrated Wiring Diagram

Page 52

16.0Electrical

16.1Illustrated Wiring Diagram

Water Pressure Switch

DHW NTC Sensor

Central Heating

NTC Sensor

Overheat Stat

Hall Effect

Sensor

Flue Sensor

		1
		4
		2
br	b	5
bk	g	3	Fan

X400
9 8 7 6 5 4	3 2 1	10 9 8 7 6 5 4	3 2 1

X401

g/y

1 2 3

Timer

Control PCB	br
3	br
2	bk
X501	b
1	b
	X9

Flame

Sensing

Electrode

b br

r bk

br b bk w

	br	r
b	br	r
b

Pump

Link

g/y b

Mains Input Cable

L N	Spark
L N	Generator
b a	b
	br

Ignition

Electrode

DiverterValve

GasValve

br	- brown	g	- green
bk	- black	g/y	- green / yellow
b	- blue	r	- red

w- white

Image 52

Contents Installation & Service Instructions Natural Gas Benchmark SchemeInstaller Notification Guidelines Scheme Members onlyLegislation Important Installation, Commissioning, Service & RepairCodes of Practice refer to the most recent version Safe Manual Handling GeneralPreparation TechniqueContents Introduction Contents of PackDescription General Layout LayoutExpansion Vessel Automatic Air Vent Circulation Pump Drain Off PointCentral Heating Mode Fig Domestic Hot Water Mode FigFrost Protection Mode Appliance OperationTechnical Data Gold Combi 24, 28 & 33 HE aDimensions and Fixings System Details InformationCentral Heating Circuit BypassSystem Filling and Pressurising Fig Safety Pressure Relief Valve FigExpansion Vessel Central Heating only Showers Domestic Hot Water Circuit FigHard Water Areas Site Requirements LocationClearances Figs At leastSite Requirement Ventilation of CompartmentsGas Supply Electrical SupplyPer Pipe run Minimum FallPer Metre Run50mm per Minimum Fall500mm min Run Minimum fallPlume Displacement Kit FlueBelow windows or openings on pitched roofs 2000 Likely flue positions requiring a flue terminal guardFlue Options Total equivalent length = +B+C+2x90BendsTotal Equivalent Length = +B+C+1x90Bend Key Accessory Size Code No Flue AccessoriesTelescopic Flue inc. elbow Twin Flue Connection Twin Flue Duct AdaptorAir Duct Connection Flue Duct Connection Boiler Adaptor Flue Dimensions For Roof TerminalsFlue Trim Terminal Guard FigPlume Displacement Plume Displacement Kit Fig28/33 Determining Permissible LengthsExample ElbowGeneral Fitting Notes 50mm30mm Elbow to allow the flue to be installed as shown 60Ø extension piece. It must be secured using twoUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screwsInstallation Unpacking & Initial PreparationFlushing After considering the site requirementsFitting the Filling Loop Kit Fitting the Safety Pressure Relief Discharge Pipe Fig Fitting The BoilerCondensate Drain see section Tighten all the connectionsFitting The Flue Wall Thickness Flue ElbowEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste Flue25mm Extension Cut End Inner Flue Support BracketEnsure Extension is fully engaged into Boiler Adaptor Preliminary Electrical Checks Making The Electrical ConnectionsTerminal Block Cover Cable Clamp Selector Switch Display CommissioningCommissioning the Boiler Screw Pump Automatic Air VentTemperature Control Selector Switch Display Temperature Control Gas Pressure Test Point Gas ValveCheck the Operational Working Gas Inlet Pressure It is necessary to set the boiler to ‘Calibration Mode’Setting the Timer Completion CompletionCase Front Panel Facia Panel 13 .1 Annual Servicing ServicingAnnual Servicing Inspection Electrode Position 10 ±1Igniter Fig Changing ComponentsSpark and Sensing Electrodes Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorInsulation Fig Burner FigExtension Piece Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigPump Complete Fig Pump Head Only FigAutomatic Air Vent Fig Hall Effect Sensor Fig Pressure Gauge FigsPressure Relief Valve Fig Diverter Valve Motor Unit & Assembly Fig Plate Heat Exchanger FigSelector Switch Fig 14.22 P.C.B. FigGas Valve Fig Expansion Vessel FigSetting the Gas Valve Setting the Gas Valve CO2 checkFlue Adaptor Test Point Plug Analyser Probe CO2 should be 8.4% ± Reduce CO2Illustrated Wiring Diagram ElectricalShort Parts List Short Parts List426 315316 311 404419 422 400 415Initial Fault Finding Checks Fault FindingError Codes Error 133 flashing Go to section ‘A’ Turn the selector switch toReset position for 5 seconds Pump runsError 133 flashing Go to section ‘I’ Turn Domestic Hot WaterOpen DHW tap fully Close DHW tapPCB X3 connector terminals 3 Switch terminalFan jammed or faulty winding Replace PCB Replace waterCheck wiring Viewing Window Replace sensor or PCB E28Gas at burner Replace gas valveReplace PCB Is there 230V at Replace safety thermostatReplace sensor Pages for Notes Pages for Notes GAS Boiler System Commissioning Checklist Service Record Potterton

16.0Electrical

16.1Illustrated Wiring Diagram

Control PCB