Baxi Potterton G.C.No 47 393 22, G.C.No 47 393 23, G.C.No 47 393 21 manual General Layout

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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.	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
	11				2
	11
					3
			4		5
					6
		25	26
			26
	Reset						2
	Reset						1
							1	3
							0	4
							bar
	17	27	24	18	19		8	7

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Contents Installation & Service Instructions 0086 Installer Notification Guidelines Scheme Members onlyCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Safe Manual Handling General Preparation TechniqueContents Description Contents of PackIntroduction General Layout LayoutPump Protection Frost Protection ModeAppliance Operation Technical Data Promax Combi 24, 28Dimensions and Fixings OrientationTap Rail 32.5 mm Condensate Drain 65 mmSystem Details InformationCentral Heating Circuit BypassPressure Relief Valve Fig System Filling and Pressurising FigExpansion Vessel Central Heating only Hard Water Areas Domestic Hot Water Circuit FigShowers At Least 1.5 7.2 Clearances Figs Site RequirementsLocation Site Requirement Ventilation of CompartmentsGas Supply Electrical SupplyCondensate Drain Flue Flue terminal guardEach fitting to aid assembly Flue OptionsHorizontal Flue Systems Horizontal FluesVertical Flues Twin & Vertical Flue Systems120mm Min ApartTelescopic Internal Flue Kit 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 FigMetres Ring Adaptor Plume DisplacementPlume Displacement Kit Fig 28/33 Determining Permissible LengthsExample 5121368General Fitting Notes 30mmElbow 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 Boiler Fitting the Pressure Relief Discharge Pipe FigCondensate Drain see section Tighten all the connectionsFitting The Flue Wall Thickness WasteFlue Elbow Ensure Elbow is fully Engaged into BoilerEnsure 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 Commissioning Commissioning the BoilerPressure Case Front Panel Facia Panel CompletionCompletion Servicing 13 .1 Annual ServicingAnnual Servicing Inspection Case Front Panel Facia Panel Securing ScrewsViewing Window 10 ±1Burner Sensing Electrode Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Gasket Extension 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 Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Fig Plate Heat Exchanger FigSelector Switch Fig 14.22 P.C.B. FigExpansion Vessel Fig Throttle Adjustment ScrewGas Valve Fig Setting the Gas Valve Setting the Gas Valve CO2 checkFlue Adaptor Test Point Plug Analyser Probe ThrottleIllustrated Wiring Diagram ElectricalShort Parts List Short Parts List306 302Error Codes Fault FindingInitial Fault Finding Checks Error 133 flashing Go to section ‘A’ Turn the selector switch toReset position for 5 seconds Pump runsTurn selector switch to Error 133 flashing Go to section ‘I’Turn Domestic Hot Water Open DHW tap fullyPCB 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 Page Page Condensing Boilers only Service Record Brooks House, Coventry Road, Warwick. CV34 4LL