Set Appliance State:
Mains Power Off
CH Demand
Isolate Mains Power to appliance as per TOPs P4
On/Off Switch On.
Connect a U-gauge to the Burner Gas Pressure Point at the top of the Boiler.
On/Off Switch On.
Connect a U-gauge to the Burner Gas Pressure Point at the top of the Boiler.
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow the Boiler to run its purge period
(approximately 20 seconds after Boiler switches on).
When ignition begins power should be supplied to the Gas Valve and the U-gauge should indicate a positive gas pressure.
(approximately 20 seconds after Boiler switches on).
When ignition begins power should be supplied to the Gas Valve and the U-gauge should indicate a positive gas pressure.
