Set Appliance State:
Gas Off
DHW Demand - Ensure Store is not up to Temperature
Isolate Mains Power to appliance as per TOPs P4
Attach FGA + ve pressure connection to gas outlet pressure test point on the gas valve
Attach FGA + ve pressure connection to gas outlet pressure test point on the gas valve
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Appliance On/Off switch On.
Reset lockout as necessary.
Allow the fan to run while observing the FGA.
As the appliance attempts to ignite the fan speed will increase and decrease 5 times.
While the fan is running does the fan pressure reach -2.5mb or greater (e.g. -3.0mb)?
Notes:
When pressure gauge is removed test point should be tightened and checked for soundness.
Reset lockout as necessary.
Allow the fan to run while observing the FGA.
As the appliance attempts to ignite the fan speed will increase and decrease 5 times.
While the fan is running does the fan pressure reach -2.5mb or greater (e.g. -3.0mb)?
Notes:
When pressure gauge is removed test point should be tightened and checked for soundness.
Isolate as per TOPs P4
and refit as necessary