Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
DHW Demand
Attach U-gauge to inlet pressure test point
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Observe U-gauge as boiler goes through its ignition sequence.
Does the pressure stay above a minimum of 18mb throughout the ignition sequence?
Note:
After this test remove the gauge and make sure all disturbed gas connections are checked for tightness.
Does the pressure stay above a minimum of 18mb throughout the ignition sequence?
Note:
After this test remove the gauge and make sure all disturbed gas connections are checked for tightness.
Isolate as per TOPs P4
and refit as necessary