Set Appliance State:
CH Demand
Isolate Mains Power to appliance as per TOPs P4
Connect a U-gauge to the gas valve outlet pressure point
Set boiler control switch to H position
Connect a U-gauge to the gas valve outlet pressure point
Set boiler control switch to H position
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow the fan to run and ignition sequence to commence.
Initially the pressure on the gauge should drop to a negative pressure of approximately -2 mbar.
As the gas valve opens the pressure should increase to increase to 11.8 +/- 0.5 mbar
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Initially the pressure on the gauge should drop to a negative pressure of approximately -2 mbar.
As the gas valve opens the pressure should increase to increase to 11.8 +/- 0.5 mbar
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
