Set Appliance State:
Turn Hot Water Tap On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Test 1.
Allow boiler to run for DHW.
Turn hot water tap off.
Does the pump overrun after demand has ended for approximately 30 - 45 seconds?
Test 2.
Allow the boiler to run for CH until the flow temp reaches 60°C.
Remove CH demand.
Does the pump overrun after demand has ended for approximately 3.5 - 4 minutes?
Note:
To reduce the heating time some radiators can be turned off.
Allow boiler to run for DHW.
Turn hot water tap off.
Does the pump overrun after demand has ended for approximately 30 - 45 seconds?
Test 2.
Allow the boiler to run for CH until the flow temp reaches 60°C.
Remove CH demand.
Does the pump overrun after demand has ended for approximately 3.5 - 4 minutes?
Note:
To reduce the heating time some radiators can be turned off.
Isolate as per TOPs P4
and refit as necessary