Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
DHW Demand
DHW Temp Selector to Max
Set FGA to Pressure
Connect FGA to Positive AND Negative differential
pressure test points
Set FGA to Pressure
Connect FGA to Positive AND Negative differential
pressure test points
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Press reset to cancel purge cycle countdown.
Press and hold in the reset button for 8 seconds to fire the boiler at fixed rate.
Is there a differential burner pressure of at least 3.44 mbar?
Note:
1. Burner pressure may only reach maximum for a short period and then modulate down.
2. When pressure tubes are removed the pressure test point cap should be refitted and checked for gas tightness.
Press and hold in the reset button for 8 seconds to fire the boiler at fixed rate.
Is there a differential burner pressure of at least 3.44 mbar?
Note:
1. Burner pressure may only reach maximum for a short period and then modulate down.
2. When pressure tubes are removed the pressure test point cap should be refitted and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary