Set Appliance State:
Mains Power Off
Gas Off
DHW Demand
DHW Selector in Maximum (+) position
CH Selector in Minimum (-) position
ON/OFF Switch in ON position
DHW Selector in Maximum (+) position
CH Selector in Minimum (-) position
ON/OFF Switch in ON position
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 |
Observation:
Ensure no other gas appliances are in use. Allow the ignition sequence to commence.
A drop in pressure should be observed as the gas valve opens, as pressure changes from standing to working pressure.
Expected working pressure 20mb.
Note: When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
A drop in pressure should be observed as the gas valve opens, as pressure changes from standing to working pressure.
Expected working pressure 20mb.
Note: When U-gauge is removed pressure nipple should be tightened & checked for gas soundness.
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