Operating instructions

Air factor λ – CO2 /O2 content
Air factor λ O
2 content
(%)
CO2 content
(%) for natur-
al gas E
CO
2 content
(%) for natur-
al gas LL
CO
2 content
(%) for LPG P
1.24 4.4 9.2 9.1 10.9
1.27 4.9 9.0 8.9 10.6
1.30 5.3 8.7 8.6 10.3
1.34 5.7 8.5 8.4 10.0
1.37 6.1 8.3 8.2 9.8
1.40 6.5 8.1 8.0 9.6
1.44 6.9 7.8 7.7 9.3
To achieve an optimum combustion
control, the system regularly carries
out an automatic self-calibration; also
after a power failure (shutdown). For
this, the combustion is briefly regu-
lated to max. ionisation current
(equals air factor λ=1). The automatic
calibration is carried out shortly after
the burner start and lasts approx. 5 s.
During the calibration, higher than
normal CO emissions may occur
briefly.
The combustion control unit can also
be calibrated manually. e.g. after
maintenance or service work (coding
address "85").
Electronic combustion control unit (cont.)
106
Function description
5692 672 GB