Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Attach pressure gauge to gas valve inlet pressure test point
Selector switch to DHW position
CH temperature selector to minimum
DHW Preheat selector to OFF position
Selector switch to DHW position
CH temperature selector to minimum
DHW Preheat selector to OFF position
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 pressure gauge, does the inlet pressure remain constant above 18mb throughout the ignition sequence?
Note:
When pressure gauge is removed pressure test point should be tightened and checked for gas soundness.
Observe pressure gauge, does the inlet pressure remain constant above 18mb throughout the ignition sequence?
Note:
When pressure gauge is removed pressure test point should be tightened and checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary