Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Attach U-gauge to burner pressure test point
Set service potentiometer to MIN
Gas On
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Observation:

Allow burner to ignite and establish.
Is pressure at approximately minimum rate? (refer to table)
Move service mode potentiometer to MAX.
Is pressure at approximately maximum rate? (refer to table)
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.