Smarter Heating & Hot Water

Intergas FGA Tool

Enter analyser readings with the case open at maximum rate (H) and minimum rate (L). Pass/fail uses the original Hub Intergas FGA limits.

Max power, case open. Pass 3.85–5.6%

Result O2 (H)
—

Max power, case open. Pass 8.6–9.6%

Result CO2 (H)
—

Min power, case open. Pass ≥ O2 (H) and ≤ 6.00%

Result O2 (L)
—

Min power, case open. Pass ≥ 8.4% and ≤ CO2 (H)

Result CO2 (L)
—

Limits

O2 (H) PASS if 3.85% ≤ O2 (H) ≤ 5.6%
CO2 (H) PASS if 8.6% ≤ CO2 (H) ≤ 9.6%
O2 (L) PASS if O2 (H) ≤ O2 (L) ≤ 6.00%
CO2 (L) PASS if 8.4% ≤ CO2 (L) ≤ CO2 (H)

Minimum and maximum rate

Important: Figures are the original Hub Intergas FGA tool (case open). Always check the appliance instruction for that model. A failed reading means do not leave the boiler in service. Gas Safe registered work only.