Siemens VALVEGYR LDU11.523A27 - Connection Examples

12/21
Building Technologies Division CC1N7696en
20.04.2016
Connection examples with vent pipe to atmosphere using burner controls type LGB2..., LGB3... / LGB4... /
LMG2...
For other connections, refer to the connection diagram of the relevant burner control.
Valve proving test prior to burner startup Valve proving test following immediately the controlled
shutdown
LDU11
17
DW
2
C
54
hr1
GP
23
1116
15
E
B
6
III
ar2
3
SB / R / W
N
1
12
LGB2.../3.../4.../LMG2...
H
L
hr2
XI
20
14 1912 22
5
3
4
A2
A1
M
N
AL
13
2421
10
7696a05
/
0403
N
L
LDU11
22
5
4
2
C
hr1
7
B
11
E
12
P
III
1
16
14
15
DW
ar2
17 3
LGB2.../3.../4.../LMG2...
H
6
hr2
19 23
20
I
8
12
XI
SB / R / W
A2
A1
5
GP
3
M
N
13
AL
21
24
4
7
696
a
06/0
7
03
AGK25
3)
³) Only in connection with LMG2...
Plants with vent pipe to atmosphere
GP
E
C
B
DW
LDU
A
A2
A1
C
DW
LDU
B
GP
E
7696s01/0695
Connection examples with vent pipe to atmosphere using burner controls type LFE..., LFL... or LGK..., or the
control unit LEC...
Check during the prepurge time (min. 60 seconds) and
following immediately the controlled shutdown in plants
with vent pipe to atmosphere. Delay on make of relay
d >2 seconds.
2)
Expanding flame burner or interrupted pilot burner
Check following immediately the controlled shutdown
2)
Expanding flame burner or interrupted pilot burner
N
LDU11
hr2
GP
C
14
15
18
1
EK2
2
17
16
6
III
53
ar2
4
B
E
11
201912
hr1
XI
23
8
I
7
10
V
9
14
W
2
d
LFE1
LEC1
LFL1...
LGK16...
18 199
12 13
4
LP
8
5
R
N
4 5°/10°°
18°/17°°
A
AL
22
13
2421
N
7696a10/0401
DW
2)
2)
LDU11
hr2
GP
C
N
BE
6
W
14
15
18 1
17
16
III
53
ar2
4
2
EK2
4
LFE1
LEC1
LFL1...
LGK16...
8
R
N
11
20
19
12
hr1
XI
23
I
7
10
V
9
8
5°/10°°
18°/17°°
A
9
5
AL
7696a11/0401
22
13
2421
N
DW
2)
2)