Two-Stage-Controlled Main Burner With; Permanent Pilot Burner - Honeywell Krom Schroeder BCU 480 Manual

Application
DI
6 3 5
BCU 480
50 51 26 14 12
VAG
4
M
7 IC 40
BV
BCU 480 · Edition 03.16l
L1, N, PE
DI P
SPS
PLC
API
P A 1 2
23 22 4 21
µC
24
VBY
VAS
1
2
18
19
16
1
17
28
2
29
02–04 06–08 04 06–08
1 .1 .3 Two-stage-controlled main
burner with permanent pilot
burner
Control:
Main burner ON/OFF with ignition
via bypass.
The main burner can be started at
low-fire rate after the operating sig-
nal from the pilot burner has been
detected. When the operating state
is reached, the BCU issues the En-
able signal for the maximum burner
capacity. Pilot and main burners
can be operated simultaneously.
This reduces the time required by
the main burner for starting up.
The BCU provides the cooling and
purging processes.
04
1
1
2
2
t
9