Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Attach a U-gauge to the gas valve inlet pressure test point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow fan to run and ignition sequence to commence.
Is the gas inlet pressure constant and at least 18 mbar throughout the boiler operation?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Is the gas inlet pressure constant and at least 18 mbar throughout the boiler operation?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary