7. If necessary, check the return into circulation of any combustion
products if using coaxial pipes. The sensor will then be connected to
the outlet connected to the combustion air intake circuit.
Caution
Be sure to correctly replace the plug after taking a measurement.
For more information, see
Using the boiler according to thermal output, page 88
CO2 checking and setting values, page 61
Checking combustion (reduced heat input), page 109
Fig.127 Checking the air in the intake circuit
7
MW
-3
0
0
0
1
1
1
-0
3
10 Maintenance
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