Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
Selector switch set to DHW
DHW temperature control set to MAX
Preheat switched OFF
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

Allow the appliance to ignite and run DHW demand.
With a flow rate as per the table is there a temperature rise of approximately 35°C and is operation satisfactory?
 
Note.
If the appliance has a flow regulator fitted, the draw off rate will be below
the rate specified above, which will result in a higher temperature rise.