11
Installation
D. Terminal connection diagram
S3
S3
S2
S2
S1
S1
C
R1
L
NC
N
N
NO
--
--
S4
S4
W
as
ser
sen
so
r
Le
ve
l s
w
itc
h 3
/
wa
te
r d
ete
ct
or
Le
ve
l s
w
itc
h 2
/
wa
te
r d
ete
ct
or
Le
ve
l s
w
itc
h 1
no
t u
se
d
R
el
ay
1
M
agn
et
v
al
ve
M
ai
ns
Po
te
nt
ia
l f
re
e
re
lay
3
M
agn
et
v
al
ve
Low voltage
Relay
Mains
Low voltage
max. 12 VAC/DC
Terminal: Connection for:
S1 (2x)
Level switch
S2 (2x)
Level switch 1/water detector
S3 (2x)
Level switch 2/water detector
-- (2x)
not used
S4 (2x)
Level switch 3/water detector
max. 12 V
Mains voltage 230 VAC
Mains voltage
230 VAC 50-60 Hz
Terminal: Connection for:
N
Magnet valve (alarm signal) N
R1
Magnet valve (alarm signal) L
N
Mains neutral conductor N
L
Mains phase conductor L
NC
Normally closed R3
C
Magnet valve (alarm signal)
NO
Normally open R3
The PE protective conductor must be con-
nected to the PE metal terminal block!
If the potential-free contact R3 is used a
bridge is to be provided between the two
PE metal terminal blocks!
