Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
NO demands
Attach tube from + ve connection on FGA to the upper gas valve test point
Attach tube from + ve connection on FGA to the upper gas valve test point
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Reset appliance as necessary.
(Press and hold the power button for 4 seconds then release)
Allow the fan purge to complete.
Apply a CH demand and allow the fan to run, monitor the pressure registered while the fan runs and the boiler attempts to ignite.
The fan pressure reading will be negative.
Expect a reading of approximately -2mb or greater.
(e.g. -2.5mb registered on display)
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
(Press and hold the power button for 4 seconds then release)
Allow the fan purge to complete.
Apply a CH demand and allow the fan to run, monitor the pressure registered while the fan runs and the boiler attempts to ignite.
The fan pressure reading will be negative.
Expect a reading of approximately -2mb or greater.
(e.g. -2.5mb registered on display)
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary