Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Attach U gauge to gas valve outlet test point
Remove 4 wire harness from fan
Remove 4 wire harness from fan
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow the fan to run to full speed.
Measure the fan pressure.
Expect a negative pressure of approximately 6-8mb.
Note: When U-gauge is removed the pressure test point
should be tightened & checked for gas soundness.
Measure the fan pressure.
Expect a negative pressure of approximately 6-8mb.
Note: When U-gauge is removed the pressure test point
should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary