Connect FGA to the combustion test point on the boiler
WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure
Mains Power On
Initiate check programme P.01 - Appliance will then operate at max input
Alternatively, press the + and - buttons simultaneously this will also allow the appliance to operate at max input
Click HERE for guidance on how to initiate check programme P.01
Alternatively refer to Adapt for guidance

Measurement:

(If the combustion reading is not within the specified range and the integrity of the flue system and the combustion circuit seals have been verified and the inlet gas pressure have been verified, then it will be necessary to adjust the combustion rate of the appliance).
Adjust gas valve (CO/CO2 ratio) to the manufacturers specified values, refer to Adapt for guidance / procedure.
Has it been possible to adjust the combustion readings to within the manufacturers specified range?