Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Dhw temperature control to maximum
Selector switch set to ch/dhw
Connect a U-gauge to the Burner Gas Pressure Test Point
Disconnect 1x lead from the gas valve modulation coil
Selector switch set to ch/dhw
Connect a U-gauge to the Burner Gas Pressure Test Point
Disconnect 1x lead from the gas valve modulation coil
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow the boiler to execute its ignition sequence and burner to ignite.
Confirm the burner pressure is at MIN as per the table.
Note:
When gauge is removed pressure test point should be tightened and checked for gas tightness.
Confirm the burner pressure is at MIN as per the table.
Note:
When gauge is removed pressure test point should be tightened and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary