Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
DHW 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:
Allow fan to run and ignition sequence to commence.
Does the pressure gauge show a constant inlet pressure of at least 17mb throughout the operation?
Note:
1. When "U" gauge is removed the test point should be tightened and checked for gas tightness.
2. Where the manufacturer states an inlet pressure that would not normally be acceptable please refer to TOP's for further guidance.
Does the pressure gauge show a constant inlet pressure of at least 17mb throughout the operation?
Note:
1. When "U" gauge is removed the test point should be tightened and checked for gas tightness.
2. Where the manufacturer states an inlet pressure that would not normally be acceptable please refer to TOP's for further guidance.
Isolate as per TOPs P4
and refit as necessary