Set Appliance State:
Gas Off
Isolate Mains Power to appliance as per TOPs P4
DHW Demand
DHW Selector in Maximum (+) position
CH Selector in Minimum (-) position
ON/OFF Switch in ON position
Attach U-gauge to the gas valve pressure test point
DHW Demand
DHW Selector in Maximum (+) position
CH Selector in Minimum (-) position
ON/OFF Switch in ON position
Attach U-gauge to the gas valve pressure test point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow Fan to run and ignition sequence to commence and the burner to establish.
The U-gauge should show the pressure rise to approx. 8 mbar as the
fan reaches high speed.
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
The U-gauge should show the pressure rise to approx. 8 mbar as the
fan reaches high speed.
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