Set Appliance State:
Gas On; Pilot On
CH Demand
Isolate Mains Power to appliance as per TOPs P4
Boiler Operating Switch in HW and CH position
Heating Control Thermostat (Potentiometer) adjusted to Maximum
Attach U-gauge to gas valve outlet pressure test point
Boiler Operating Switch in HW and CH position
Heating Control Thermostat (Potentiometer) adjusted to Maximum
Attach U-gauge to gas valve outlet pressure test point
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Does the burner initially ignite at low flame (approximately 2.4mb), then rise to its set burner pressure?
Notes:
The boiler is a range rated appliance and CH burner pressure can be set between 2.4-10mb.
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Notes:
The boiler is a range rated appliance and CH burner pressure can be set between 2.4-10mb.
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary