Examples Of Application; Stage-Controlled Main Burner With Alternating; Pilot Burner - Honeywell Krom Schroder PFU 780 Technical Information

Application
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22a 10c 26e
PFU 780
22e 18e 16c
VAG
VR..L
PFU 780 · Edition 02.12l
L1, N, PE
DI P
SPS
PLC
CPE
P A 1 2
30e 10a 10e 14a
µC
28c 18a
TZI
VBY
1
2
2e
4e
2c
1
4c
6a
2
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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.
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.
1
1
2
2
t
6