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Connection examples and sequence diagrams (cont'd)
Double- or multiflame supervision of burners for selectable operation with oil or gas (expanding flame burner)
16
1 2 12
13 14
FW
3
EK2
SB
H
7
M1
M2
3
M
M
7
c2
c1
e1
e2
(LFE10)
L2
P
N
(R)
(Mp)
Building Technologies
HVAC Products
Startup with short preignition (3 seconds) and checked actuator control.
Control of the 2nd output stage via on / off controller «R2».
Required type of flame safeguards: LFE10... with UV detectors QRA...
(17)
15
18 8
9
3
19
4
4
T
W
c1/c2
6
5
BS2
4
R1
LP
6
T
5
FW
P
P
GP
7761a08/0896
OV2
Öl
OV1
M
OV3
Luft
LK
GV1
Gas
GV2
GV3
LEC1...
22
20
21
c1
BS1
IV
I
II III
1
11 12
2
3
6
13 14
a
z
4 5 7 8
M
LK 100%
0%
33%
38%
N
Operating switch BS1
I
II
III
IV
Operating mode selector BS2
I
II
III
7761a09/0696
UL.2
6
5
d1
R2
OV3
T
15
16
17
Z
46%
31%
GV1
GV3
(SQ...)
Nominal load
Stop
Partial load
Automatic control
Gas
Off
Oil
10
7
11
d1
BS2
I II III
OV1
OV2
GV2
15/17
CC1N7761en
19.02.2007
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