Set Appliance State:

Turn Hot Water Tap On
Appliance DHW thermostat to MAX (this will activate the intelligent preheat function click here for more information)
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Allow boiler to ignite and run on DHW.
With a flow rate as listed in the table below a temperature rise of approximately 35°C is expected.
ApplianceFlow Rate
25kW10.2 l/min
30kW12.3 l/min
105 HE A12.3 l/min

Does the hot water operate satisfactorily and is the temperature rise as expected?