Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Gas Off
Ensure secondary heat exchanger is cool and
there is a demand for Preheat
Attach U-gauge to the gas valve inlet pressure test point
Boiler mains switch ON
there is a demand for Preheat
Attach U-gauge to the gas valve inlet pressure test point
Boiler mains switch ON
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow ignition sequence to commence.
Does the pressure gauge show an inlet pressure of 14mb or greater throughout the operation?
Notes:
1. Where the manufacturer states an inlet pressure that would normally not be acceptable please refer to TOP's for further guidance.
2. When U-gauge is removed the pressure test point should be tightened & checked for gas soundness.
Does the pressure gauge show an inlet pressure of 14mb or greater throughout the operation?
Notes:
1. Where the manufacturer states an inlet pressure that would normally not be acceptable please refer to TOP's for further guidance.
2. When U-gauge is removed the pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary