Honeywell Krom Schroeder BCU 480 - Modulating-Controlled Burner

BCU 480 · Edition 03.16l 10
BCU 480
14
12
SPS
PLC
API
DI
L1, N, PE
4
21
18
19
16
17
28
29
24
2
1
P
5
3
DI
6
mA
µC
ϑ 1
ϑ 2
VAG
VBY
BV+IC
M
2
1
Application
1.1.4 Modulating-controlled
burner
Control:
Main burner continuous.
The butterfly valve for air is moved
to ignition position in order to start
the main burner. The main burner
can be started at low-fire rate after
the operating signal from the pilot
burner has been detected. The con-
trol system controls the burner ca-
pacity via the butterfly valve for air
after the operating state has been
signalled. Pilot and main burners
can be operated simultaneously.
This reduces the time required by
the main burner for starting up.