18 REPLACEMENT OF PARTS ........................................................................................................................ 43
18.1 TO GAIN GENERAL ACCESS ................................................................................................................ 43
18.2.2 Removing the burner ............................................................................................................................ 45
18.2.5 Removing the fan.................................................................................................................................. 46
18.2.6 Removing the gas valve........................................................................................................................ 46
18.3.1 Drain down............................................................................................................................................ 48
18.3.5 Removing the pump.............................................................................................................................. 49
18.4.1 Removing the PCB's............................................................................................................................. 51
18.4.2 Removing the fuses .............................................................................................................................. 52
19 INCORRECT FUNCTION ............................................................................................................................. 53
20 MAINTENANCE INSTRUCTIONS ................................................................................................................ 54
20.1 GENERAL REMARKS ............................................................................................................................. 54
20.3 OPERATIONAL TEST ............................................................................................................................. 55
21 SHORT SPARES LIST ................................................................................................................................. 56
22 NOTES.......................................................................................................................................................... 57
23 TECHNICAL DATA ....................................................................................................................................... 58
25 SERVICE INTERVAL RECORD ................................................................................................................... 61
INTRODUCTION
The
is a fully automatic, wall mounted, low water content condensing combination boiler. It is a room
COMBI A
sealed, fan assisted, appliance providing central heating and mains pressure domestic hot water on demand. It
has electronic ignition and is suitable for all modern electrical control systems. The boiler is designed for sealed
systems only and a circulating pump, expansion vessel together with a pressure gauge and safety valve are
included within the boiler.
The COMBI A range of boilers are domestic gas boilers and intended for domestic use only.
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