Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Adjust DHW flow rate to approx 6 litres/min
Set hot water temperature control to number 3 position
Attach pressure gauge to gas valve pressure outlet test point
Set hot water temperature control to number 3 position
Attach pressure gauge to gas valve pressure outlet test point
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow boiler to ignite and establish.
After approximately 45 seconds does the burner pressure modulate?
Note: When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
After approximately 45 seconds does the burner pressure modulate?
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