Set Appliance State:
Turn Hot Water Tap On
Isolate Mains Power to appliance as per TOPs P4
Attach U-gauge to gas valve outlet pressure test point
Remove connector from modulating solenoid (blue wires)
Attach U-gauge to gas valve outlet pressure test point
Remove connector from modulating solenoid (blue wires)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to commence its ignition sequence and ignite.
Observe U-gauge, does burner run at low gas pressure (approximately 1.8mb)?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Observe U-gauge, does burner run at low gas pressure (approximately 1.8mb)?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary