Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
DHW Demand
Attach U-gauge to the inlet pressure test point on the gas valve
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Monitor the inlet pressure on the U-gauge.
During the ignition sequence does the pressure gauge show and inlet pressure of at least 15mb?
Notes:
1. The manufacturer states the boiler range is able to deliver its full output at inlet pressures as low as 15mb, however please refer to British Gas Technical Operational Procedures for further guidance regarding gas inlet working pressures.
2. When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
3. Before reassembly check the integrity of all disturbed gaskets and seals and replace as necessary.
During the ignition sequence does the pressure gauge show and inlet pressure of at least 15mb?
Notes:
1. The manufacturer states the boiler range is able to deliver its full output at inlet pressures as low as 15mb, however please refer to British Gas Technical Operational Procedures for further guidance regarding gas inlet working pressures.
2. When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
3. Before reassembly check the integrity of all disturbed gaskets and seals and replace as necessary.
Isolate as per TOPs P4
and refit as necessary