Set Appliance State:
Gas Off
Mains Reset Switch OFF
Isolate Mains Power to appliance as per TOPs P4
Ensure the boiler is cool so that there is demand for preheat
Attach U-gauge to gas valve inlet pressure test point
Set DHW temperature selector to ECO
Ensure the boiler is cool so that there is demand for preheat
Attach U-gauge to gas valve inlet pressure test point
Set DHW temperature selector to ECO
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Mains reset switch ON.
Allow pump to run and fan to start.
Monitor the U gauge - the inlet pressure should remain satisfactory throughout the ignition cycle and a dip should be seen during the sparking stage indicating the gas valve is opening.
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Allow pump to run and fan to start.
Monitor the U gauge - the inlet pressure should remain satisfactory throughout the ignition cycle and a dip should be seen during the sparking stage indicating the gas valve is opening.
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
