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 7mb or greater. (e.g. -7.5mb)
Note:
When "U" gauge is removed the test point should be tightened and checked for gas tightness
Measure the fan pressure.
Expect a negative pressure of approximately 7mb or greater. (e.g. -7.5mb)
Note:
When "U" gauge is removed the test point should be tightened and checked for gas tightness
Isolate as per TOPs P4
and refit as necessary