Set Appliance State:
CH Demand
Isolate Mains Power to appliance as per TOPs P4
Selector switch to heating and hot water position
CH temperature selector to MAX
DHW temperature selector to MIN
Attach U-gauge to gas valve outlet pressure test point
Selector switch to heating and hot water position
CH temperature selector to MAX
DHW temperature selector to MIN
Attach U-gauge to gas valve outlet pressure test point
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to fire.
Does the burner pressure increase to its set pressure after approximately 90 seconds?
Does the CH system begin heating correctly?
Notes:
1. If the CH burner pressure has been set at its minimum rate, then the burner pressure will not increase.
2. When the U-gauge is removed, ensure the pressure test point is checked for soundness.
Does the burner pressure increase to its set pressure after approximately 90 seconds?
Does the CH system begin heating correctly?
Notes:
1. If the CH burner pressure has been set at its minimum rate, then the burner pressure will not increase.
2. When the U-gauge is removed, ensure the pressure test point is checked for soundness.
