Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect the 5-pin electrical plug connecting the air pressure switch and fan
Withdraw the fan assembly by pulling forwards from the top edge
Disconnect fan venturi tube from air pressure switch,
Connect fga (+ve pressure test point) to disconnected fan venturi tube
Refit fan assembly, reconnecting the 5-pin electrical plug
Withdraw the fan assembly by pulling forwards from the top edge
Disconnect fan venturi tube from air pressure switch,
Connect fga (+ve pressure test point) to disconnected fan venturi tube
Refit fan assembly, reconnecting the 5-pin electrical plug
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Ensure fan is running.
Measure fan pressure.
Expected pressure, positive greater than 1.0 mbar.
Measure fan pressure.
Expected pressure, positive greater than 1.0 mbar.
Isolate as per TOPs P4
and refit as necessary