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Parameters
4 .4 Behaviour during operation
4 .4 .1 Safety time during operation t
Parameter 14
This indicates the safety time during operation t
valve V1.
The default in accordance with EN 298 is 1 s.
The BCU has also the available option of t
longing the time increases the installation availability in
the case of brief-duration signal fades (e.g. fades of the
flame signal).
In accordance with EN 746-2, the safety time of the
installation during operation (including closing time of
the valves) may not exceed 3 s.
Note the requirements of the Standards!
BCU 440 · Edition 01.17
4 .4 .2 Fault lock-out or restart
Parameter 12
SB
This parameter determines whether the BCU starts a
one-off restart or performs an immediate fault lock-out
for
SB
for the burner after an installation fault (flame failure or
failure of air flow).
of 2 s. Pro-
SB
▼
15
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