Set Appliance State:
Gas Off
Isolate Mains Power to appliance as per TOPs P4
The water heating gas valve is the upper of the two gas valves
Attach a U-gauge to the inlet pressure test point
The water heating gas valve is the upper of the two gas valves
Attach a U-gauge to the inlet pressure test point
Gas On
Observation:
The inlet pressure should be approximately 20 mbar.
Note: When U-gauge is removed pressure point should be tightened & checked for gas soundness.
Note: When U-gauge is removed pressure point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary