Checking, Temperature Control | Baxi Potterton Gold HE A Range

x 2

Central Heating		Domestic Hot Water
Temperature Control	Fig. 66	Temperature Control

Selector Switch	Display
			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	1	3
			12	1	2
	Central Heating	Domestic Hot Water
Temperature Control		Temperature Control

Fig. 67	Fig. 68

Fig. 69

Fig. 70	Fig. 71

11.0Commissioning

11.2Checking

1.The gas valve is factory set and the burner pressure cannot be measured as it is altered by suction of the fan and modulates as demand on the boiler alters. The gas supply pressure should be 20mb.

2.If necessary the gas rate may be checked after running the boiler for 10 minutes with any other appliances and pilot lights turned off.

3.Ensure that the integral timer and any external controls are calling for heat, and the selector switch is in the central

heating and hot water position ( ). The current boiler temperature is shown on the display.

4.To check the gas rate it is necessary to set the boiler to ‘Calibration Mode’.

5.Turn both temperature control knobs fully anticlockwise, then quickly turn the DHW temperature knob 1/4 clockwise twice and back fully anticlockwise (Fig. 66).

6.The display will now alternate between ‘SF’ and the current boiler temperature and both green LEDs will flash (Figs. 67 & 68).

7.Turn CH temperature control knob fully clockwise. As the knob is turned the display will change from ‘0’ to ‘00’ (Fig. 69) indicating maximum rate, then revert to ‘P’ alternating with the current boiler temperature (Figs 70 & 71).

8.A gas rate measurement may now be made. Approximate values are:-

24 model	2.6m3/h
28 model	3.1m3/h
33 model	3.6 m3/h

9.The ‘Calibration Function’ is active for 20 minutes unless the maximum CH temperature is exceeded.

10.The function can be disabled at any time by turning the DHW temperature knob.

© Baxi Heating UK Ltd 2008

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Image 35

Baxi Potterton Gold HE A Range manual Checking, Temperature Control

Contents

Installation & Service Instructions BS-EN ISO 9001 Accredited Company Natural Gas Scheme Members only Installer Notification Guidelines Codes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Technique Safe Manual HandlingGeneral Preparation Contents Description Contents of PackIntroduction Layout General Layout Pump Protection Frost Protection ModeAppliance Operation Gold Combi 24, 28 & 33 HE a Technical Data 22mm 15mm Dimensions and FixingsOrientation Flue Ø 100mm Tap Rail 32.5 mm Condensate Drain 65 mm Bypass System DetailsInformation Central Heating Circuit Pressure Relief Valve Fig System Filling and Pressurising FigExpansion Vessel Central Heating only Hard Water Areas Domestic Hot Water Circuit FigShowers Clearances Figs Site RequirementsLocation Electrical Supply Site RequirementVentilation of Compartments Gas Supply Condensate Drain Flue terminal guard Flue This bend is equivalent to 1 metre Flue OptionsHorizontal Flues Horizontal Flue Systems Metre for each 135 bend This bend is equivalent to 1 metre Vertical Flues Twin PipeTwin & Vertical Flue Systems Metre for each 91.5 bend 5111079 Flue AccessoriesKey Accessory Size Code No For Twin Flue Systems fit the adaptors as follows Flue Duct AdaptorAir duct adaptor Flue Deflector Fig Flue DimensionsFor Roof Terminals Flue Trim Metres Ring Adaptor Plume DisplacementPlume Displacement Kit Fig Example Additional Accessories Elbow 5121369 Elbow Pair 512137028/33 Determining Permissible Lengths Exhaust, securing in the brackets Shown in . Complete the installation of the 60ØGeneral Fitting Notes 30mm Plume Outlet Elbow Flushing InstallationUnpacking & Initial Preparation Hose Fitting Cold Inlet Stop Valve Loop and valves must be connected as shown in the diagram aFitting the Filling Loop Double Check Valve Stop Valve Temporary Filling Loop Tighten all the connections Fitting The BoilerFitting the Pressure Relief Discharge Pipe Fig Condensate Drain see section Ensure Elbow is fully Engaged into Boiler Fitting The FlueWall Thickness Waste Flue Elbow Ensure Extension is Fully engaged into Boiler Adaptor Inner Flue Support BracketEnsure Flue is fully Engaged into Flue Elbow Cable Clamp Making The Electrical ConnectionsPreliminary Electrical Checks Terminal Block Cover Heat Exchanger Automatic Air Vent Screw Pump Selector Switch DisplayCommissioning Commissioning the Boiler Checking Temperature Control Setting the Timer Case Front Panel Facia Panel CompletionCompletion 13 .1 Annual Servicing Servicing Viewing Window Annual ServicingBurner Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector Fan FigVenturi Fig Injector Fig Extension Piece Burner FigInsulation Fig Flue/Heat Exchanger Thermostat Sensor Fig Central Heating Temperature Sensor NTC FigSafety Thermostat Fig DHW Temperature Sensor NTC Fig Automatic Air Vent Fig Heat Exchanger Automatic Air Vent FigPump Head Only Fig Pump Complete Fig Hall Effect Sensor Fig Pressure Gauge Figs Plate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Figs Pin Fig Selector Switch Fig14.20 P.C.B. Fig Completely undo the screws securing the control box Venturi Inlet Pipe Gas Valve FigExpansion Vessel Fig Checking the CO2 Temperature Control Selector Switch DisplayCombustion Check Electrical Illustrated Wiring Diagram Key Description Manufacturers Short Parts ListShort Parts List Error Codes Fault FindingInitial Fault Finding Checks Pump runs Error 133 flashingReset position for 5 seconds Display illuminates Open DHW tap fully Error 110 flashingDomestic Hot Water Follow operational sequence Turn Domestic Hot Water Is there 230V at Main terminals L and N Main terminal fuse PCB X3 connector terminals 3Switch terminal Fan jammed or faulty winding Replace PCB Ensure that the Hall Effect Sensor is in position Gas at burnerReplace gas valve Terminals 1 Replace heat exchanger Replace safety thermostatReplace PCB Is there 230V at GAS Boiler Commissioning Checklist Service Interval Record UK Comp No 5116282 Iss 7 4/08 Brooks House, Coventry Road, Warwick. CV34 4LL