Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Attach U gauge to gas valve inlet pressure test point
Selector switch to DHW position
CH temperature selector to Min
DHW temperature selector to Max
Selector switch to DHW position
CH temperature selector to Min
DHW temperature selector to Max
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow fan to start and ignition sequence to run.
Observe U-gauge. Does the inlet pressure remain at least 18mb throughout the ignition sequence?
Note:
When U-gauge is removed pressure test point should be tightened and checked for gas soundness.
Observe U-gauge. Does the inlet pressure remain at least 18mb throughout the ignition sequence?
Note:
When U-gauge is removed pressure test point should be tightened and checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary