Set Appliance State:
Turn Hot Water Tap On
Isolate Mains Power to appliance as per TOPs P4
Selector switch to Water
Adjust flow rate at tap to approximately 7 l/min
Attach a U-gauge to burner pressure test point
Selector switch to Water
Adjust flow rate at tap to approximately 7 l/min
Attach a U-gauge to burner pressure test point
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to ignite and heat DHW to approximately 55°C.
Does burner pressure reduce as DHW demand is met?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Does burner pressure reduce as DHW demand is met?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary