Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
DHW temperature control to maximum
CH temperature control to minimum
Gas On
WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure
Mains Power On

Measurement:

Measure the temperature of the cold water.
Now measure the flow rate and temperature of the hot water.
With a flow rate approximately 8.6 litres/min is there a temperature rise of approx. 40°C?
Is the operation satisfactory?