TAC AB, 1999-08-18
0-004-7516-1 (GB), 3:3 (10)
TAC Xenta 102 Handbook
Installation
Warning! All 230 V supply cables must be
installed by authorised electricians.
3.2
Electrical installation
3.2.1 General
1. Each controller or group of controllers must be fitted with
max. 6 A fuses.
2. Secure the cables to the controller by means of clamps or
similar, to limit their mobility.
3. Wire straps or shrinking tubing must prevent loose 230 V
cables from getting in contact with ELV cables—supply or
signal cables—and vice versa.
4. It must be simple to break the power supply for the
controller or for the complete installation.
5. When several Xenta controllers are supplied from a
common transformer, it is important that all G’s are
connected with each other and that all G0’s are connected
with each other. They must not be interchanged. An
important exception
:
G0 on the wall module should not be
connected with the other G0’s. Instead it should be
connected to the terminal OP on the controller. At the
transformer, G0 should be connected to protective earth.
This is to get an grounding point for interference diversion.
6. Connect the two M terminals to the wall module to get the
specified measuring accuracy for the room temperature.
Safety standard
Transformers supplying the controller must comply to the safe-
ty standard EN 60 742 or any other relevant safety standard
for ELV, 24 V AC. When equipment with a power supply of its
own is connected, e.g. an occupancy sensor, this power supply
must also comply with this norm.
Cable lengths
For information on communication cable lengths, see TAC
Xenta Network Guide, part number 0-004-7460. For all other
cables, maximum length is 30 m and min. area is 0,7 mm
2
.
Wall modules ZS 101–ZS 104
It is mainly the wall modules ZS 101–ZS 104 which are inten-
ded for use together with TAC Xenta 102. The wall module ZS
105 can also be used, but then the fan switch on this unit is not
used. The wiring diagrams on the following pages show how wi-
ring with ZS 104 should be done, as this is the model that has all
connections.
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