106
Air factor
λ–
CO
2
/
O
2
content
Air factor
λ
O
2
content
(
%
)
CO
2
content (
%
)
for natural gas
E
CO
2
content (
%
)
for natural 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 con-
trol, the system regularly carries out an
automatic self-calibration
;
also after a
power failure (shutdown). For this, the
combustion is briefly regulated 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 mainte-
nance or service work (coding address
"85").
Function description
Electronic combustion control unit
(cont.)
5692 760 GB
Содержание VITOCONTROL-S, WB2B
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