Baxi / Main FGA Tool

Enter analyser CO₂ at maximum rate (H) and minimum rate (L). Pass/fail uses the installation-manual band for the range you select.

Range

Case and gas follow the manual for this range.

CO₂ (H) %

Max power.

Result CO₂ (H)

—

CO₂ (L) %

Min power.

Result CO₂ (L)

—

Limits

Minimum and maximum rate

Important: Bands are taken from the installation and service manual for the range selected. Always confirm the instruction on that appliance. A failed reading means do not leave the boiler in service. Gas Safe registered work only.