Set Appliance State:
Mains Power Off
Gas On; Pilot On
CH Demand
Boiler Operating Switch in HW and CH position
Heating Control Thermostat adjusted to Maximum
Heating Control Thermostat adjusted to Maximum
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
With the central heating operating does the water system pressure rise excessively?
Note:
This test only applies to boilers fitted on sealed systems; if boiler is fitted on an open vented system, select the "Pressure acceptable" option below.
Note:
This test only applies to boilers fitted on sealed systems; if boiler is fitted on an open vented system, select the "Pressure acceptable" option below.
