Set Appliance State:
Mains Power Off
Gas Off
Mode selector switch to Off/Reset position
Turn Hot Water Tap On
Hot water temperature control set to maximum
Attach a U-gauge to the gas valve inlet pressure test point
Attach a U-gauge to the gas valve inlet pressure test point
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Mode selector switch to DHW position.
Allow burner to ignite.
Observe U-gauge. Does the inlet pressure remain constant at approximately 20 mb?
Note:
When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
Allow burner to ignite.
Observe U-gauge. Does the inlet pressure remain constant at approximately 20 mb?
Note:
When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary