Technical data

SERVICING AND SPARES
6 720 648 547 (2012/06)40
7. GAS VALVE
▶ Isolate gas supply at boiler gas cock.
▶ Pull out air inlet tube (A).
▶ Undo top gas connection (B) to gas valve.
▶ Undo bottom gas connection (C) to gas valve.
▶ Undo two securing screws (D)on the underside of casing.
▶ Pull valve up and forward out of boiler.
▶ Disconnect electrical connections.
▶ Replace valve with new seals and check for gas soundness.
Fig. 61 Gas valve removal
8. SYPHON/CONDENSATE TRAP
1. Pull condensate pipe out of the adaptor.
2. Remove trap from boiler.
▶ Clean trap and check that the connection to the heat exchanger is
clear.
▶ Fill the condensate trap with approximately 1/4 litre of water and refit
in reverse order.
Fig. 62 Syphon removal
9. ACCESS TO BOILER CONTROL COMPONENTS
▶ Remove 3 screws (A) and remove cover from control.
10. PCB FUSE
▶ Remove fuse (B) from the PCB and replace.
▶ There is a spare fuse clipped into the cover.
Fig. 63 Component and fuse access
The valve will require setting, follow procedure “Setting
the gas/air ratio” in the gas conversion section.
6720648547-30.2Wo
7.
A
C
B
6720647361-31.2Wo
6720647361-35.2Wo
A
B
9.
10.