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Connection diagram
LMG22...
LM G22...
1 2
2
8
6
1 0
3
R /W
G P /S B
A L
M
H S
E K 2
0 I
L
N
Application examples
Control of actuators of two-stage or two-stage modulating burners.
Checked pre-purging «t1» with nominal load air volume.
For information about actuators «SA»:
SQN3...:
refer to data sheet 7808
SQN7...:
refer to data sheet 7804
SQN9...:
refer to data sheet 7806
LM G 22...
1 2
2
1 0
8
3
6
1 1
E K 2
L P
A L
R /W
G P /S B
M
H S
0
I
N
8
1
2
7
R 3
N
L
R 1
K 2
K 1
C 2
+
D
C 3
-
+
R 2
I
M S
C 1
SA
SQN3...151... or SQN3...251...
* Note: with two-stage modulating burners (with gas regulation
damper «RV»), «BV2» and the dotted connection between
terminals (*) are not required
LMG 22...
12
2
10
8
3
6
11
G P /S B
LP
E K 2
R / W
AL
M
H S
N
5
4
1
0
I
a1
N
L
b 1
C
A
I
SQN7...454 / two-stage control,
single-wire control
Landis & Staefa Division
4
5
9
1 1
7
S A
B V 1
B V 2
Z
L P
9
5
7
4
1
*
F E
Z
L R
B V 1
*
B V 2
*
5
6
3
4
9
L K P
III
R V
V
II
L K
5
9
7
4
1
Z
F E
L R
B V 1
B V 2
3
2
8
6
7
b 2
L K P
c 1
a 2
B
M
II
III
IV
CC1N7421E
1
F E
S B /R /W
L
0 I
t4
T SA
t1
N L
I
K L
III
III
t
Z u
II
7421d0 4/0 498
N L
I
I
IV
IV
III
III
KL
zu
II
t1
t
TS A
t4
December 04, 1998
LM G 2...
1 2
5
9
4
742 1a1 9/1 098
LR
S A
LM G 22...
1 2
2
8
6
10
3
E K 2
LP
A L
R /W
G P /S B
M
H S
6
8
10
2
1
R 3
N L
R 1
K 2
K 1
C 2
+
D
-
+
R 2
I
M S
C 1
SA
SQN90.220... / two-stage modulating control
LMG22...
12
2
10
8
3
6
G P /S B
LP
E K 2
R / W
A L
M
H S
N
4
5
1
0
I
a1
N
L
b1
A
I
SQN7...424 / two-stage control,
two-wire control
R V
B V 2
B V 1
11
7
4
1
9
5
FE
LR Z
B V 1
3
7
9
III
C 3
R V
II
L K
11
9
5
7
4
1
F E
Z
L R
1
2
BV1
B V 2
3
2
8
6
7
b2
a2
B
M
II
III
IV
11/16
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