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Building Technologies Division CC1N7153en
21.09.2016
Connection examples
Connection of actuators without end
switch for the «CLOSED» position
19
20
9
11 10
8
LR
SA
a
z
M
LK
BV2
N
v
7153a11/0498
«z» adjusted for low-fire air volume.
Control of actuator during operation
by control signals fed to terminal 17
18
19 17 9
20
11
10
8
6
LR
N
BV1 BV2
LK
7153a12/0498
For signal path, refer to «Connection
diagrams».
Control of «BVx» via terminal 20
19
20
911
10
86
N
BV2 BV3
7153a14/0498
Relay is not required if «BV3» at
terminal 20 is hydraulically series-
connected with «BV2».
«BV2» is controlled by terminal 18 or
19.
Burner with no air damper or
with air damper not controlled
by the LAL…
Wiring required with LAL2 for
operation with no air pressure
supervision
13
12
14
45
6
R
W
d1
N
M
7
7153a15/1001
If an auxiliary contact «d1» of the fan
contactor is included in the circuit as
shown in the diagram, ignition and
release of fuel take place only when
the contact is closed.
Semiautomatic startup
312
13
14
4
5
AL
I
W
N
L3
LP
0
7153a16/0498
The burner is switched on manually
by pressing the «I» button.
Then, the LAL programs startup and
flame supervision.
Burner shutdown is also made
manually by pressing the «0» button,
or automatically when limit thermostat
or pressure switch «W» responds.
«L3» indicates when the burner is
ready for startup. It extinguishes
shortly after the burner is started up.
For other connections, refer to
«Connection diagrams».
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