Honeywell Krom Schroder BCU 580 - 1.1 Examples of application

BCU 580 · Edition 11.15l 9
Application
1.1 Examples of application
1.1.1 Stage-controlled main burner
with alternating pilot burner
Control:
Main burner ON/OFF or High/Low
The main burner can be started with
reduced capacity after the operat-
ing signal from the pilot burner has
been detected. The pilot burner is
switched off automatically after the
main burner has started up. When
the main burner is switched off, the
pilot burner automatically switches
on again. This reduces the main
burner start-up time.
The UV sensor monitors the flame
signal from pilot and main burners.
The BCU provides the cooling and
purging processes.
BCU 580..C0F3
µC
VAS
VAS 1
VAG
TZI/TGI
VR..L
V1 V2
V4
10
UVS
38371817
1 2 3
FCU 500
Process control (PCC)
46
49
50
P
HT
A
4
ϑ2
9
13
14
57
5
41
42
43
ϑ1
1
2
t
1
2
02–0402–04 06–08 06–08
ϑ1
ϑ2
PLC