Set Appliance State:
Turn Hot Water Tap On
Isolate Mains Power to appliance as per TOPs P4
Selector switch to Water
Connect U-gauge to pressure test point on gas valve
Run DHW boiler until water runs cold before turning mains power on
Selector switch to Water
Connect U-gauge to pressure test point on gas valve
Run DHW boiler until water runs cold before turning mains power on
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
Allow fan to run and burner to ignite.
Does the U-gauge read approximately 14.2mbar?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Does the U-gauge read approximately 14.2mbar?
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