11
3.5. Examples of installation
Example of installation set up of a SV4B
with two detectors
SV 4B
0
+
Fuse
Fuse or circuit breaker
Life
NEUTRAL
C
C
l
l
o
o
s
s
e
e
d
d
s
s
o
o
l
l
e
e
n
n
o
o
i
i
d
d
v
v
a
a
l
l
v
v
e
e
s
s
t
t
a
a
t
t
u
u
s
s
d
d
i
i
s
s
p
p
l
l
a
a
y
y
l
l
i
i
g
g
n
n
t
t
Gas valve closed *
*
Breaking capacity of rating relays switch contact : 1 20VA ou 30W
Important
:
The relay's contacts are shown on the SV4B label, unit switch off.
The AL1/ DEF relays are normally energized and the AL2 relay is unenergized.
Telephone dialer
C1
C2 C3
To a phone network line
Connection box
1 2 3
1 2 3 4 1 2 3 4
1
2
3
4
4
3
2
1
Detector A
Detector B
