Set Appliance State:
Mains Power Off
CH Demand
Turn DHW control off to remove preheat demand
Set CH temperature selector to Max
Ensure all heating controls are calling
Set CH temperature selector to Max
Ensure all heating controls are calling
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Mains reset switch On.
Allow boiler to fire under CH demand and system to heat for a short period.
Turn OFF CH demand
Does the Burner extinguish and boiler shut down? The display should also revert to displaying current system pressure on removal of demand
Note:
Pump may continue to run for a short period following end of demand.
Allow boiler to fire under CH demand and system to heat for a short period.
Turn OFF CH demand
Does the Burner extinguish and boiler shut down? The display should also revert to displaying current system pressure on removal of demand
Note:
Pump may continue to run for a short period following end of demand.
Isolate as per TOPs P4
and refit as necessary