Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Selector switch set to CH/DHW position
Boiler DHW thermostat set to MAX
Attach pressure gauge to burner pressure test point
Ensure appliance is cool
Boiler DHW thermostat set to MAX
Attach pressure gauge to burner pressure test point
Ensure appliance is cool
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow the burner to ignite and run on DHW.
With a flow rate of 10.2 litres/min, burner pressure will increase to approximately 9.4 mbar.
Reduce flow rate to approximately 4 litres/min via a DHW tap.
Does the burner pressure reduce?
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
With a flow rate of 10.2 litres/min, burner pressure will increase to approximately 9.4 mbar.
Reduce flow rate to approximately 4 litres/min via a DHW tap.
Does the burner pressure reduce?
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Isolate as per TOPs P4
and refit as necessary