Set Appliance State:
Gas Off
Isolate Mains Power to appliance as per TOPs P4
Measurement:
Remove Pressure Test Point Screw and attach pressure gauge
Gas ON
Observe gauge for correct pressure.
Gas OFF
Remove gauge and replace Pressure Test Point Screw.
Ensure gas test point screw is gas tight after test.
Gas ON
Observe gauge for correct pressure.
Gas OFF
Remove gauge and replace Pressure Test Point Screw.
Ensure gas test point screw is gas tight after test.
Isolate as per TOPs P4
and refit as necessary