Set Appliance State:
Mains Power Off
Gas Off
Isolate Mains Power to appliance as per TOPs P4
Water heater switch set to constant
Set thermostat to MID position
The water heating gas valve is the upper of the two gas valves
Attach a U-gauge to the burner pressure test point
Water heater switch set to constant
Set thermostat to MID position
The water heating gas valve is the upper of the two gas valves
Attach a U-gauge to the burner pressure test point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow the ignition sequence to commence and burner to ignite.
Observe the U-gauge. Does the outlet pressure remain constant at approximately 15.0 mbar?
Note: When U-gauge is removed pressure point should be tightened & checked for gas soundness.
Observe the U-gauge. Does the outlet pressure remain constant at approximately 15.0 mbar?
Note: When U-gauge is removed pressure point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary