Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
DHW Demand
Undo inlet pressure test point
Attach pressure gauge to the inlet pressure test point
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:
Allow fan to run and ignition sequence to commence.
Does the pressure gauge show a constant inlet pressure of approx 20 mb throughout the operation?
Note:
When "U" gauge is remove test point should be tightened and checked for gas tightness.
Does the pressure gauge show a constant inlet pressure of approx 20 mb throughout the operation?
Note:
When "U" gauge is remove test point should be tightened and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary