Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Attach pressure gauge to the inlet pressure test point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
On/Off switch on.
Allow fan to run and ignition sequence to commence and burner to ignite.
Does the pressure gauge show a constant inlet pressure of approx 20 mb throughout the operation?
Note:
When "U" gauge is removed the test point should be tightened and checked for gas tightness.
Allow fan to run and ignition sequence to commence and burner to ignite.
Does the pressure gauge show a constant inlet pressure of approx 20 mb throughout the operation?
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