Honeywell Krom Schroeder BCU 480 - Flame Proving Period T; Minimum Burner on Time T

BCU 480 · Edition 03.16l 41
Parameters
4.5.2 Flame proving period t
FS
Pilot burner
Parameter 23
t
SA1
t
Z
88 04 02 03 00
t
t
FS1
4
5
1
7
9
18-19
12
V1
16-17
1
1
ϑ 1
Main burner
Parameter 25
t
SA1
t
Z
04 06 07 08 02 03 00
t
t
FS1
t
SA2
t
FS2
9
12
V1
1
14 V2
2
ϑ 1
ϑ 2
2
1
24
21
88
4
5
2
7
18-19
16-17
28-29
Programmable time between 0 and 25 s.
This time elapses before the BCU starts the next pro-
gram step so as to give the flame time to stabilize.
4.5.3 Minimum burner on time t
B
Parameter 20
Programmable time in the range from minimum safety
time on start-up t
SA2
to maximum 25 s during which
the main burner remains in operation. In the case of
brief activation of the start-up signal input (ϑ2) (e.g.
with a pulse), the burner on time t
B
is started, and the
main burner remains in operation for at least this period.
04 06 07 08
t
t
SA2
t
B
9
12
V1
1
14 V2
2
2
1
24
21
88
4
5
2
18-19
16-17
28-29
ϑ 1
ϑ 2