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Building Technologies CC1N7435en
HVAC Products 11.01.2007
Connection diagrams (cont’d)
LGB22... / LGB32...
Flame supervision
Burner controls for single- or 2-stage forced draft burners.
Air damper control for prepurging with nominal load air volume.
LGB22...: With ionization probe or auxiliary unit AGQ1... for UV detector
QRA...
LGB32...: With blue-flame detector QRC1...
GP/SB
R/W
M
LP
Z
BV1
LR
FS
A
B
B´ C D
12
6
11
7
4
5
1
9
7435f02/0700
tw t11 t1 t12t10
TSA
t3
t4
3
LK
Nocke
I
Application examples
Control of actuators of 2-stage or 2-stage modulating burners.
Prepurging («t1») with nominal load air volume.
For information about the actuators:
SQN3...: Refer to Data Sheet N7808
SQN7...: Refer to Data Sheet N7804
SQN9...: Refer to Data Sheet N7806
LR
SA
LGB22.../32...
BV1/2
KL
Zu
III
LKP
NL
t1
III
t
I
II
12
2
10
8
36
11
9
5
7
4
GP/
SB
W
R
HS
0
I
L
N
AL
EK2
M
LP
LR
Z
BV1
7435a10/0704
7
2
10
6
8
3
1
SA
Si
ION
1
LGB22... / LGB32...
1
sw
QRC1...
12
br
bl
2
Nur LGB32...
Nur LGB22...
12
210
8
3
6
11
9
7
45
1
HS
0
I
N
L
EK2
M
LP
GP
R/W
Z
BV1
LR
ION
AL
LGB22...
N
18
2
75
6
3
4
9
B
b1
b2
A
a1
a2
I
M
II
III
V
5
LK
RV
1)
7435a20/0704
S1)
BV2
2)
SB
*
*
R3
R1
Si
SQN3...151... or SQN3...251...
* Note:
With 2-stage modulating burners (with gas control damper «RV»),
«BV2» and the dotted connection between terminals marked (*) are not
required.
12
2
10
83
611
9
5
74
1
GP
W
R
AL
EK2
M
LP
LR
Z
BV1
ION
HS
0
I
NL
6
8
10 2
1
3
7
9
7435a08/0704
RV
LK
SA
R1
K2
R3
K1
R2
C1
I
MS
C3
III
II
Si
SB
2
LGB22...
SQN90.220... / 2-stage modulating control
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