Surge protection
The following measures must be taken to protect the controller from overvoltage if signal
lines are installed outside of buildings or over long distances.
The shield of signal lines routed outside of buildings must have current carrying capacity
and must be grounded on both sides. The surge diverters must be installed at the inlet of
the control cabinet.
8.3 Connecting the controller
Connect the controller on the basis of terminal diagram in Fig. 7.
For the cable entries, knock out the grommets on the bottom of the casing base or insert the
enclosed grommets.
Use a cable with a cross-section of min. 1.5 mm
2
for the power supply connection.
UP RK
2Pkt
+
N
_
S4
S3
S2
S1
Gnd
Gnd
N
L
1
2
3
4
5
6
7
8
9
10
+
_
11
12
13
14
15
16
17
18
S1= VS = Flow temperature sensor
S2 = AS = Outdoor temperature sensor
S3 = RüS = Return flow temperature sensor
S4 = TS = Drinking water temperature sensor
UP = Circulation pump
RK = Actuator of the control valve
Fig. 7
⋅
Terminal wiring
EB 5432-1 EN
33
Installation and electrical connections
Содержание TROVIS 5432
Страница 37: ...EB 5432 1 EN 37...
