Sequence Diagram - Siemens LAL1.25 Manual

Connection diagrams (cont'd)
LAL4...

Sequence diagram

16/20
Siemens Building Technologies
HVAC Products
L
SB
1
AS
br1
a b
ar1
4
W
R
B
5
fr1
a
IX
XI XIII
b a a
EK1*
L1
E
BR
3 21 2
1 (3)
AL
EK2*
N
Do not press the lockout reset button for more than 10 seconds!
For the connection of the safety shutoff valve, refer to the plant diagram provided
by the burner supplier.
A
t11
a
I
b
t7
a
II
b
a
III
b
IV
t3´
a
V
b
t16
VI
a
VII
b
a
VIII
b
IX
a
X
b
a
XI
b
a
XII *
b
t10*
a
XIII
b
a
XIV
b
Positions of lockout indicator
*
P
* These data do not apply to LAL1...
H
I
a
b
ar2
12 6 7
M1 M2
LP
N
13 14
fr2
b a
b
XII
II X
VIII
IV
b b a a b a
AR
br2
M
A
15 16 18 17 19 9
SA
H
Z
BV1 BV2
t1 t12
t3
TSA
t8
bl sw
22
23
QRB1...
22 23 24
V
FR
a b
XIV
a b
VII
a b
ar3
V III
VI
b a b a b
SM
M
20 1110 8
LR
a z m
v
M
7153a17/0498
B C
t6
t4
t3n
t5
t20
t13
1
QRC1...
br
1
LK
Control output
at terminal:
D
*
4 12
7
19
16
10
9
15
9
11
20
8
17
18
7153d01e/0402
CC1N7153en
14.10.2002