Set Appliance State:
Mains Power Off
Gas Off
Turn Hot Water Tap On
DHW temperature control to maximum
CH temperature control to minimum
DHW temperature control to maximum
CH temperature control to minimum
Attach U-gauge to gas valve inlet pressure test point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to light and establish while observing the U-gauge.
Once the boiler has lit does the U-gauge show a constant inlet pressure of at least 18mb?
Note: When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
Once the boiler has lit does the U-gauge show a constant inlet pressure of at least 18mb?
Note: When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary