Set Appliance State:
Gas On; Pilot On
Isolate Mains Power to appliance as per TOPs P4
On/Off Switch in ON position
Mode Selector Switch to Summer
Water Thermostat to MAX
Connect a U-Gauge to the Gas Valve outlet pressure point
Hot Water Tap on
On/Off Switch in ON position
Mode Selector Switch to Summer
Water Thermostat to MAX
Connect a U-Gauge to the Gas Valve outlet pressure point
Hot Water Tap on
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
With the boiler alight for approximately a minute, slowly turn the DHW Thermostat to minimum.
Does the burner flame reduce to low rate?
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.
Does the burner flame reduce to low rate?
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