Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Ensure combustion cover is fitted
Connect F.G.A to the combustion chamber test points
Ensure positive F.G.A tube goes to positive test point and
negative tube goes to negative test point.
Connect F.G.A to the combustion chamber test points
Ensure positive F.G.A tube goes to positive test point and
negative tube goes to negative test point.
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Reset appliance if required (rotate selector switch to OFF position for 4 seconds,
then rotate back to DHW/CH position).
Allow appliance to go through its ignition sequence (fan running).
Measure the differential pressure at the combustion chamber test points.
Pressure measured should be -1.0 mbar or greater (e.g. -1.45 mbar).
Is differential pressure measured -1.0 mbar or greater?
then rotate back to DHW/CH position).
Allow appliance to go through its ignition sequence (fan running).
Measure the differential pressure at the combustion chamber test points.
Pressure measured should be -1.0 mbar or greater (e.g. -1.45 mbar).
Is differential pressure measured -1.0 mbar or greater?
