Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
ON/OFF Switch in ON Position
CH Temp Selector in Maximum position
DHW Temp Selector in Minimum position
Mode Selector Switch in Heat and Hot water position
Attach U-gauge to the inlet pressure test point
CH Temp Selector in Maximum position
DHW Temp Selector in Minimum position
Mode Selector Switch in Heat and Hot water position
Attach U-gauge to the inlet pressure test point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
If required reset boiler, turn CH / DHW control to reset position.
Allow Fan to run and ignition sequence to commence.
Does the U-gauge show a constant Inlet Pressure of at least 18mb throughout the ignition sequence?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Allow Fan to run and ignition sequence to commence.
Does the U-gauge show a constant Inlet Pressure of at least 18mb throughout the ignition sequence?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary