Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Selector Switch in HOT WATER position
Connect a U-Gauge to the gas valve outlet pressure test point
Connect a U-Gauge to the gas valve outlet pressure test point
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
With the DHW tap fully open the Burner should ignite and operate at its maximum gas pressure (approximately 15.3 mb).
Allow water to heat. Does gas pressure modulate down as water reaches temperature?
Note: It may be necessary to reduce water flow at the tap to reduce the time taken for this test.
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Allow water to heat. Does gas pressure modulate down as water reaches temperature?
Note: It may be necessary to reduce water flow at the tap to reduce the time taken for this test.
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