Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Attach pressure gauge to the inlet pressure test point
Temperature selector to high setting
Ensure hot water storage vessel is calling for heat
Boiler On/Off switch Off
Temperature selector to high setting
Ensure hot water storage vessel is calling for heat
Boiler On/Off switch Off
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Boiler switch to On position.
Reset lockout if necessary.
Allow fan to run and ignition sequence to commence.
As the appliance goes through its ignition and run sequence, does the gas inlet pressure remain satisfactory (i.e. stays above 18 mb throughout the operation)?
Note:
When pressure gauge is removed pressure test point should
be tightened & checked for soundness.
Reset lockout if necessary.
Allow fan to run and ignition sequence to commence.
As the appliance goes through its ignition and run sequence, does the gas inlet pressure remain satisfactory (i.e. stays above 18 mb throughout the operation)?
Note:
When pressure gauge is removed pressure test point should
be tightened & checked for soundness.
Isolate as per TOPs P4
and refit as necessary