Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Attach U-gauge to inlet pressure test point
(Use tool provided for Honeywell valve or T10 Torx / 2.5mm Allen key)
(Use tool provided for Honeywell valve or T10 Torx / 2.5mm Allen key)
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Reset appliance as necessary (hold down both arrow buttons until display changes) and allow the boiler to complete its self-check.
Observe the pressure gauge as the appliance runs its ignition sequence, during the sparking stage of the cycle there should a dip in the inlet pressure indicating the gas valve is opening.
Does the inlet pressure dip indicating the gas valve is opening?
Does the inlet pressure remain at a satisfactory level?
The inlet pressure should remain above minimum throughout boiler operation (refer to table).
Note:
Upon completing of the test the test point should be tightened and checked for gas soundness.
Observe the pressure gauge as the appliance runs its ignition sequence, during the sparking stage of the cycle there should a dip in the inlet pressure indicating the gas valve is opening.
Does the inlet pressure dip indicating the gas valve is opening?
Does the inlet pressure remain at a satisfactory level?
The inlet pressure should remain above minimum throughout boiler operation (refer to table).
Note:
Upon completing of the test the test point should be tightened and checked for gas soundness.
