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Building Technologies CC1N7461en
21.08.2018
Connection examples for interrupted pilot burners (cont´d)
UV flame detectors can supervise both oil and gas flames, but gas flames can also be
supervised with ionization probes.
38% 31%
46%
LFE1
13
14 15
16 17
a z
M
100%
N
0%
4 5
7
8
33%
Z
GV1
OV1
GV2
OV2
d1
BS2
I
II
III
1 2
11 12
3
6
T
W
T
c1
LK
(SQ...)
BS1
I
II
III
IV
R2
T
d1
GV3
OV3
SB
N (Mp)
L2
+
LF
EK2
c1/c2
e1/e2
c1/c2
P
LP
BS2
GP
P
R1
21
6 5 10 7
11
M1
M
c1
e1
P (R)
M2
M
c2
e2
H
1 2 12 13
15
14
16
(17)
3
19 4 8 18 9
22
20
7461a11/0901
I
II
III
When using UV flame detector QRA..., terminal 13 must be connected to earth.
Öl
Luft
Gas
M
OV1
OV2
OV3
LK
GV1
GV2
GV3
7461a12/1196
Operating switch BS1
I Nominal load
II Stop
III Part load
IV Automatic control
Operating switch BS2
I Gas
II Off
III Oil
LFE... for firing on gas
or oil, optional
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