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5. Adjusting CO2. Remove the Cap Screw. Use a
T15 Torx wrench to adjust gas valve.
6. Once you have measured and adjusted CO2 in
“Min Fire”, then-
7. Set DIP Switch #7 to OFF and switch #6 to ON.
8. If CO2 “Max Fire” is too low you will need to go
back to “Min Fire” and adjust to bring CO2 up.
9. If “Max Fire” is too high you will need to go back
to “Min Fire” and adjust to bring CO2 down.
Combustion Setup
Gas Inlet Port
CO2 Adjustment
NOTE: FTCW199 Gas Valve Shown. Depending on your model number,
gas valve location may be different.
OFF
ALL
COMBI SIZES
(and all altitudes)
CO2
Value
This will fire the boiler at “Max Fire”
DO NOT MAKE ADJUSTMENTS IN MAX FIRE
FT WALL MOUNTED AND FLOORSTANDING COMBI MODELS
