Set Appliance State:
On/Off Switch OFF
CH Demand
Isolate Mains Power to appliance as per TOPs P4
Attach pressure gauge to outlet pressure test point on the gas valve
Unplug the electrical connector plug from the gas valve and make safe
Attach pressure gauge to outlet pressure test point on the gas valve
Unplug the electrical connector plug from the gas valve and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Appliance On/Off switch On.
Reset lock out as necessary.
Allow fan to run while observing the pressure gauge.
As the fan runs does gauge indicate a negative pressure of approximately -1.5mb for approximately 12 seconds then
increase to approximately -2.5mb?
Reconnect plug to gas valve.
Note:
When pressure gauge removed test point should be tightened and checked for soundness.
Reset lock out as necessary.
Allow fan to run while observing the pressure gauge.
As the fan runs does gauge indicate a negative pressure of approximately -1.5mb for approximately 12 seconds then
increase to approximately -2.5mb?
Reconnect plug to gas valve.
Note:
When pressure gauge removed test point should be tightened and checked for soundness.
Isolate as per TOPs P4
and refit as necessary