Examples Of Application; Stage-Controlled Main Burner With Alternating; Pilot Burner - Honeywell Krom Schroeder BCU 480 Manual

Application
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6 3 5
BCU 480
12
26 14
VAG
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BCU 480 · Edition 03.16l
L1, N, PE
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SPS
PLC
API
P A 1 2
23 22 4 21
µC
24
VBY
1
2
18
19
16
1
17
28
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02–04 06–08 02–04 06–08

1 .1 Examples of application

1 .1 .1 Stage-controlled main burner
with alternating pilot burner
Control:
Main burner ON/OFF.
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.
A UV sensor monitors the flame sig-
nal from pilot and main burners. UV
sensor UVD 1 is used for continu-
ous operation, UV sensor UVS for
intermittent operation.
The BCU provides the cooling and
purging processes.
1
1
2
2
t
7