Behaviour During Operation; Safety Time During Operation T; Fault Lock-Out Or Restart; Sb For V1 And V2 - Honeywell BCU 460 Technical Information

Parameters

4 .5 Behaviour during operation

4 .5 .1 Safety time during operation t

Parameter 14
This indicates the safety time during operation t
valves V1 and V2.
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 or, on BCU 465, in the case of pressure
switch drop-out).
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!

4 .5 .2 Fault lock-out or restart

Parameter 12
This parameter determines whether the BCU starts a
one-off restart or performs an immediate fault lock-out
for the burner after an installation fault (flame failure or
failure of air flow).
BCU 460, BCU 465 · Edition 03.16l
for V1 and V2
SB
for
SB
of 2 s. Pro-
SB
52