Connection Examples - Siemens LAL1.25 Manual

Oil burner controls lal1 series; lal2 series; lal4 series
Hide thumbs Also See for LAL1.25:
Table of Contents

Advertisement

Connection examples

Connection of actuators without
changeover end switch for the
CLOSED position
Control of actuator during operation
by control signals fed to terminal 17
Control of «BV...» via terminal 20
Wiring required with LAL2... for op-
eration with no air pressure supervi-
sion
Semiautomatic startup
18/20
Siemens Building Technologies
HVAC Products
19
20
9
11
10
8
LR
v
z
a
SA
M
BV2
N
7153a11/0498
19
17
9
11
18
20
LR
LK
BV1
BV2
N
19
9
11
8
20
10
7153a14/0498
BV2
BV3
N
12
14
4
5
13
R
W
d1
M
7153a15/1001
N
3
12
13
14
4
I
AL
W
L3
LP
N
7153a16/0498
«z» adjusted for low-fire air volume
LK
10
6
For signal path, refer to «Connection
8
diagrams»
7153a12/0498
6
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...
7
If an auxiliary contact «d1» of the fan
6
contactor is included in the circuit as
shown in the diagram, ignition and
release of fuel take place only when
the contact is closed.
The burner is switched on manually
5
by pressing the «I» button.
0
Then, the LAL... programs startup
and flame supervision.
Burner shutdown is also made manu-
ally 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 «Con-
nection diagrams».
CC1N7153en
14.10.2002

Advertisement

Table of Contents
loading

This manual is also suitable for:

Lal2.14Lal2.25Lal4.25a27Lal2.65Lal3.25

Table of Contents