Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Attach U-gauge to gas inlet pressure test point
Ensure No demands
Ensure No demands
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Cancel purge cycle & if required, reset boiler.
With a standing pressure registered on the U-gauge, turn off the inlet gas supply isolation valve.
Turn On a DHW tap & allow the ignition sequence to commence.
During the sparking phase of ignition the gas pressure registered on the U-gauge should be seen to drop away, indicating that the gas valve has opened. (see note 1.)
With a standing pressure registered on the U-gauge, turn off the inlet gas supply isolation valve.
Turn On a DHW tap & allow the ignition sequence to commence.
During the sparking phase of ignition the gas pressure registered on the U-gauge should be seen to drop away, indicating that the gas valve has opened. (see note 1.)
