Set Appliance State:
Mains Power Off
CH Demand
Heating temperature selector to maximum
Hot water temperature selector to OFF
Hot water temperature selector to OFF
Gas On; Pilot On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
Allow boiler to fire and heat system.
Monitor the system pressure gauge.
Does the system pressure remain constant at approximately 1 bar?
Note:
This test is for appliances fitted on sealed systems, if appliance is fitted to an open vent system then select the "Pressure remains constant" option below.
Monitor the system pressure gauge.
Does the system pressure remain constant at approximately 1 bar?
Note:
This test is for appliances fitted on sealed systems, if appliance is fitted to an open vent system then select the "Pressure remains constant" option below.
Isolate as per TOPs P4
and refit as necessary