Set Appliance State:
Mains Power Off
Gas Off
CH switch OFF
Ensure secondary heat exchanger is cool and requires pre-heat (this can be achieved by running the DHW with the gas to the appliance turned off)
Attach U-gauge to burner pressure test point
Ensure secondary heat exchanger is cool and requires pre-heat (this can be achieved by running the DHW with the gas to the appliance turned off)
Attach U-gauge to burner pressure test point
Gas On
Mains Power On
Measurement:
Pre-heat switch ON.
Allow fan to run and pilot to ignite.
Does main burner cross light from pilot at a gas pressure of approximately 1.5 mbar?
Note: When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
Allow fan to run and pilot to ignite.
Does main burner cross light from pilot at a gas pressure of approximately 1.5 mbar?
Note: When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
