Set Appliance State:

CH Demand
Turn Hot Water Tap On
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Carry out a gas rate with the appliance operating at maximum rate.
Click HERE for how to operate the appliance in maximum output mode.
Is the gas rate correct for the appliance?
Note:
If it is not possible to gas rate the appliance choose that option below.