Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Attach U-gauge to burner pressure test point
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to start ignition sequence.
As sparking stage of the ignition sequence begins is there
a positive burner pressure of at least 2.5mb +/-0.2mb (NG)?
Notes:
1. Values for LPG: Propane - 6.4mb, Butane - 5.3mb.
2. Burner pressure may ramp up during ignition sequence.
3. When pressure gauge is removed pressure test point should be tightened and checked for gas soundness.
As sparking stage of the ignition sequence begins is there
a positive burner pressure of at least 2.5mb +/-0.2mb (NG)?
Notes:
1. Values for LPG: Propane - 6.4mb, Butane - 5.3mb.
2. Burner pressure may ramp up during ignition sequence.
3. When pressure gauge is removed pressure test point should be tightened and checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary