Potthof & Co 28kw, 24kw, 33kw manual General Layout, Expansion Vessel Automatic Air Vent

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						2.0	General Layout
						2.1	Layout
23
1						1.	Expansion Vessel
1					15	2.	Automatic Air Vent
						2.	Automatic Air Vent
						3.	DHW Plate Heat Exchanger / Automatic Bypass
22						4.	Circulation Pump
						4.	Circulation Pump
						5.	Drain Off Point
14						6.	Safety Pressure Relief Valve
						7.	Optional Integral Timer Position
					13	8.	Central Heating System Pressure Gauge
21						9.	PCB
					16	10.	Control Box
						11.	3-Way Valve Assembly
					20	12.	Condensate Trap
						12.	Condensate Trap
						13.	Flame Sensing Electrode
						14.	Spark Electrode
						15.	Primary Heat Exchanger
						16.	Fan Assembly
						17.	On/Off/Reset Selector Switch
						18.	Central Heating Temperature Control
						19.	Hot Water Temperature Control
10						20.	Venturi
9	8					21.	Air/Gas Collector
9
						22.	Combustion Box Cover & Burner
		7				22.	Combustion Box Cover & Burner
						23.	Igniter
						24.	Burner On Light
						25.	Central Heating Mode Light
						26.	Domestic Hot Water Mode Light
					12	27.	Display
					12
						28.	Integral Timer
	11				2
	11
					3
			4		5
					6
		25	26
			26
									2	1	12
									3		11
									4		10
	Reset						2		5			9
	Reset								PM
								3	PM			8
								3	7			7
									8			AM
							0	4	9		0	5
							bar		10		4
									11		3
									12	1	2
	17	27	24	18	19		8			28

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Contents Installation & Service Instructions Natural Gas Benchmark SchemeInstaller Notification Guidelines Scheme Members onlyCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Safe Manual Handling GeneralPreparation TechniqueContents Description Contents of PackIntroduction 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 BypassExpansion Vessel Central Heating only Safety Pressure Relief Valve FigSystem Filling and Pressurising Fig Hard Water Areas Domestic Hot Water Circuit FigShowers Site Requirements LocationClearances Figs At leastSite Requirement Ventilation of CompartmentsGas Supply Electrical SupplyPer Pipe run Minimum FallPer Metre Run500mm min Minimum Fall50mm per 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 Telescopic Flue inc. elbow Flue AccessoriesKey Accessory Size Code No Air Duct Connection Flue Duct Connection Boiler Adaptor Twin Flue Duct AdaptorTwin Flue Connection Flue Dimensions For Roof TerminalsFlue Trim Terminal Guard FigPlume Displacement Plume Displacement Kit Fig28/33 Determining Permissible LengthsExample Elbow30mm 50mmGeneral Fitting Notes 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 FlueEnsure Extension is fully engaged into Boiler Adaptor Inner Flue Support Bracket25mm Extension Cut End Terminal Block Cover Cable Clamp Making The Electrical ConnectionsPreliminary Electrical Checks 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 Case Front Panel Facia Panel CompletionCompletion Annual Servicing Inspection Servicing13 .1 Annual Servicing Electrode Position 10 ±1Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorExtension Piece Burner FigInsulation Fig Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigAutomatic Air Vent Fig Pump Head Only FigPump Complete Fig Pressure Relief Valve Fig Pressure Gauge FigsHall Effect Sensor 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 415Error Codes Fault FindingInitial Fault Finding Checks 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 sensor Replace safety thermostatReplace PCB Is there 230V at Pages for Notes Pages for Notes GAS Boiler System Commissioning Checklist Service Record Potterton