Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
CH Demand
Attach a pressure gauge to the burner pressure test point
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Measure the burner pressure as the appliance operates.
The burner pressure should be correctly set as per the appliance data badge.
Is the burner pressure satisfactory?
Notes:
1. For range rated appliances confirm the burner pressure is correctly set for the systems requirements.
2. When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
3. Gas valve and electrical connections may differ in appearance but test remains the same.