Baxi Potterton Gold HE A Range Making The Electrical Connections, Preliminary Electrical Checks

Page 33

Terminal Block Cover

Fig. 58

	Fig. 59	Facia Panel
	Cable Clamp	Facia Panel
	Cable Clamp

Fused Spur

LN

Room ‘Stat

N

		bk	1
230V		bk	2
		g/y
	N	b
	N
	L	br
	L
Fig. 60
	Frost	Thermostat
Fused Spur
L N
Room ‘Stat	230V
N	230V
N
			bk	1
	230V		bk	2
			bk	2
External Clock			g/y
		N	b
		N
		L	br
Fig. 61		L
Fig. 61

NOTE: The 230V switched signal for external controls (Frost Stat - Room Stat - Timer) must always be taken from terminal 2 at the boiler. Live, Neutral and Earth to power these controls must be taken from the Fused Spur.

10.0Installation

10.8Making The Electrical Connections

The boiler is fitted with a 1.3m length of 3 core cable. This can be connected to the fused 3A 230V 50HZ supply.

NOTE: Both the Live and Neutral connections are fused.

To connect an external control proceed as follows:-

1.Slacken the facia panel securing screws and lift the outercase panel so that its securing tabs are clear of the facia. Remove the panel.

2.Completely undo the screws securing the facia panel and hinge it down (Fig. 58).

3.Undo the terminal block cover securing screw and remove the cover (Fig. 58).

4.Slacken the unused cable clamp on the LH side of the boiler chassis (Fig. 59). Insert the external control wiring through the clamp and route it to the terminal block.

5.Refer to the instructions supplied with the control.

IMPORTANT: The room thermostat MUST be suitable for 230V switching.

NOTE: An external frost thermostat cannot be used with the optional integral timer.

6.Remove the link between terminals 1 & 2. The 230V supply at terminal 2 must be connected to the thermostat. The switched output from the thermostat must be connected to terminal 1 (Figs. 60 & 61). If the room thermostat being used incorporates an anticipator it MUST be wired as shown in Figs. 60 & 61.

7.Ensure that the external control input cable(s) have sufficient slack to allow the control box to drop down. Tighten the cable clamp on the boiler chassis.

8.Replace the terminal block cover, routing the external control input cable(s) through the second cut-out.

10.9Preliminary Electrical Checks

1.Prior to commissioning the boiler preliminary electrical system checks should be carried out.

2.These should be performed using a suitable meter, and include checks for Earth Continuity,

Resistance to Earth, Short Circuit and Polarity.

© Baxi Heating UK Ltd 2008

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Contents Installation & Service Instructions BS-EN ISO 9001 Accredited Company Natural GasScheme Members only Installer Notification GuidelinesImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version General Safe Manual HandlingPreparation TechniqueContents Contents of Pack IntroductionDescription Layout General LayoutFrost Protection Mode Appliance OperationPump Protection Gold Combi 24, 28 & 33 HE a Technical DataOrientation Dimensions and FixingsFlue Ø 100mm Tap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mmInformation System DetailsCentral Heating Circuit BypassSystem Filling and Pressurising Fig Expansion Vessel Central Heating onlyPressure Relief Valve Fig Domestic Hot Water Circuit Fig ShowersHard Water Areas Site Requirements LocationClearances Figs Ventilation of Compartments Site RequirementGas Supply Electrical SupplyCondensate Drain Flue terminal guard FlueHorizontal Flues Flue OptionsHorizontal Flue Systems This bend is equivalent to 1 metreTwin & Vertical Flue Systems Vertical Flues Twin PipeMetre for each 91.5 bend Metre for each 135 bend This bend is equivalent to 1 metreFlue Accessories Key Accessory Size Code No5111079 Flue Duct Adaptor Air duct adaptorFor Twin Flue Systems fit the adaptors as follows For Roof Terminals Flue DimensionsFlue Trim Flue Deflector FigPlume Displacement Plume Displacement Kit FigMetres Ring Adaptor 28/33 Additional Accessories Elbow 5121369 Elbow Pair 5121370Determining Permissible Lengths ExampleGeneral Fitting Notes Shown in . Complete the installation of the 60Ø30mm Exhaust, securing in the bracketsPlume Outlet Elbow Installation Unpacking & Initial PreparationFlushing Fitting the Filling Loop Loop and valves must be connected as shown in the diagram aDouble Check Valve Stop Valve Temporary Filling Loop Hose Fitting Cold Inlet Stop ValveFitting the Pressure Relief Discharge Pipe Fig Fitting The BoilerCondensate Drain see section Tighten all the connectionsWall Thickness Waste Fitting The FlueFlue Elbow Ensure Elbow is fully Engaged into BoilerInner Flue Support Bracket Ensure Flue is fully Engaged into Flue ElbowEnsure Extension is Fully engaged into Boiler Adaptor Preliminary Electrical Checks Making The Electrical ConnectionsTerminal Block Cover Cable ClampCommissioning Selector Switch DisplayCommissioning the Boiler Heat Exchanger Automatic Air Vent Screw PumpChecking Temperature ControlSetting the Timer Completion CompletionCase Front Panel Facia Panel 13 .1 Annual Servicing ServicingAnnual Servicing BurnerViewing Window Changing Components Igniter FigSpark and Sensing Electrodes Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Fig Insulation FigExtension Piece Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigPump Head Only Fig Heat Exchanger Automatic Air Vent FigPump Complete Fig Automatic Air Vent FigHall Effect Sensor Fig Pressure Gauge FigsPlate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Figs14.20 P.C.B. Fig Selector Switch FigCompletely undo the screws securing the control box Pin FigGas Valve Fig Expansion Vessel FigVenturi Inlet Pipe Temperature Control Selector Switch Display Combustion CheckChecking the CO2 Electrical Illustrated Wiring DiagramShort Parts List Short Parts ListKey Description Manufacturers Fault Finding Initial Fault Finding ChecksError Codes Reset position for 5 seconds Error 133 flashingDisplay illuminates Pump runsDomestic Hot Water Follow operational sequence Error 110 flashingTurn Domestic Hot Water Open DHW tap fullySwitch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Is there 230V at Main terminals L and N Main terminal fuseReplace gas valve Gas at burnerTerminals 1 Ensure that the Hall Effect Sensor is in positionReplace safety thermostat Replace PCB Is there 230V atReplace heat exchanger GAS Boiler Commissioning Checklist Service Interval Record UK Comp No 5116282 Iss 7 4/08 Brooks House, Coventry Road, Warwick. CV34 4LL