Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Selector switch set to DHW
DHW temperature control set to MAX
Preheat switched OFF
Attach pressure gauge to the gas inlet pressure test point
DHW temperature control set to MAX
Preheat switched OFF
Attach pressure gauge to the gas inlet pressure test point
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow fan to run and ignition sequence to commence.
Does the pressure gauge show an inlet pressure of 14 mb or greater
throughout the operation?
Note:
1. The manufacturer states the boiler range is able to deliver it's full output at
inlet pressures as low as 14mb, however please refer to British Gas Technical Operational Procedures for further guidance regarding gas inlet working pressures.
2. When "U" gauge is removed test point should be tightened and checked for gas tightness.
Does the pressure gauge show an inlet pressure of 14 mb or greater
throughout the operation?
Note:
1. The manufacturer states the boiler range is able to deliver it's full output at
inlet pressures as low as 14mb, however please refer to British Gas Technical Operational Procedures for further guidance regarding gas inlet working pressures.
2. When "U" gauge is removed test point should be tightened and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary