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8.
LIGHTING INSTRUCTIONS ............................................................................................................................................ 29
9.
REPLACEMENT OF PARTS........................................................................................................................................... 30
9.1
General Access Prior to Replacement of Parts....................................................................................................... 30
9.2
Reassemble the Boiler After Replacement of Parts ................................................................................................ 30
9.3
To Replace the Spark Electrode or Electrode Lead ................................................................................................ 31
9.4
To Replace the Pilot Injector.................................................................................................................................. 31
9.5
To Replace the Pilot Burner................................................................................................................................... 32
9.6
To Replace the Main Burner.................................................................................................................................. 32
9.7
To Replace the Overheat Cut-Off Device ............................................................................................................... 32
9.8
To Replace the Fan............................................................................................................................................... 33
9.9
To Replace the Air Flow Pressure Switch............................................................................................................... 33
9.10
To Replace the Main Burner Injector...................................................................................................................... 33
9.11
To Replace the Boiler Thermostat ......................................................................................................................... 34
9.12
To Replace the Combustion Chamber Insulation Panels ........................................................................................ 34
9.13
To Replace the Heat Exchanger ............................................................................................................................ 35
9.14
To Replace the Pump Overrun Thermostat ............................................................................................................ 35
9.15
To Replace the Gas Valve..................................................................................................................................... 35
9.16
To Replace the Gas Valve Solenoids..................................................................................................................... 36
9.17
To Replace the Ignition Circuit Board..................................................................................................................... 36
9.18
To Replace the Pump ........................................................................................................................................... 36
9.19
To Replace the Pressure Gauge............................................................................................................................ 37
9.20
To Replace the Safety Valve ................................................................................................................................. 37
9.21
To Replace the By-Pass Valve .............................................................................................................................. 38
9.22
To Replace the Test Switch................................................................................................................................... 38
9.23
To Replace the Neon Indicator .............................................................................................................................. 38
9.24
To Replace the Expansion Vessel ......................................................................................................................... 39
9.25
To Replace the Programmer (if fitted) .................................................................................................................... 39
10. WIRING DIAGRAMS....................................................................................................................................................... 40
11. FAULT FINDING GUIDE ................................................................................................................................................. 43
12. EXPLODED VIEW .......................................................................................................................................................... 44
13. SHORT LIST SPARE PARTS ......................................................................................................................................... 45
If you have any reason to complain of any shortage of components listed in Figs 6, 7 or 29, supply a list of the item(s) concerned, boiler
model, your name, address and any information which may help us avoid further error.
Address for return:
Supplies Manager
Potterton Interpart.
Brooks House
Coventry Road
Warwick. CV34 4LL
Tel: 0926 493471
Supplied By www.heating spares.co Tel. 0161 620 6677
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