Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Attach U-gauge to inlet pressure test point
Programmer or selector switch set to hot water only
Heating temperature selector to OFF
Hot water temperature selector to maximum
Ensure heatbank is not up to temperature (this can be achieved by running the DHW with the mains power to the appliance on and the pilot switched off)
Programmer or selector switch set to hot water only
Heating temperature selector to OFF
Hot water temperature selector to maximum
Ensure heatbank is not up to temperature (this can be achieved by running the DHW with the mains power to the appliance on and the pilot switched off)
Gas On; Pilot On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Does the U-gauge show a constant pressure of at least 18mb throughout the ignition sequence?
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary