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6.8 ELECTRICAL CONNECTIONS
1
Before making any electrical connection, verify the compatibility between the power sup-
ply and the technical features of the controller and/or of the other accessories to be con-
2
nected to the controller. These features are indicated in the identification plate, situated on
one side of the cassette units.
3
In the power supply system of the cassette fancoil, a double-pole switch must be
foreseen with a distance of min. 3 mm between the two poles.
4
For a correct management and use of the EST cassette fan coil, the use of an EURAPO
microprocessor control or OMNIBUS control is suggested. The control has to be chosen
according to the requirements of the installation.
5
In the standard configurations (for example ESTQEC00, see Enclosure 6/A and 6/B)
it is possible to connect more than one motor in parallel to the same controller.
6
The electrical components are located in a metal box (Enclosure 1) accessible by removing
4 screws. The standard electric box (ESTQEC00) contains:
7
•
screw terminal board for the electrical connections;
•
specific electric wiring diagram for the ordered unit with its relevant accessories;
•
ground protection terminal marked with the symbol
8
ground protection system cable (yellow/green).
For connecting the EST cassette fan coil unit to the electric system, operate as fol-
9
lows:
1.
Insert the wires (factory pre-wired cable) through the slots of the control box (Enclo-
10
sure 1) and make the electrical connections accordingly to the electric wiring diagram
located in the control box and to the diagram of the controller itself;
2.
Fix the wires by using proper threaded cable retainers or clamps. Keep the power sup-
+
ply cables (230 V~) separate from the low voltage cables (bus cables, NTC sensors
etc.);
3.
Fix back the cover box to the base with the screws;
4.
Make sure that the installation is done in such a way that it doesn't damage the com-
ponents and it cannot be of danger to persons, objects or animals.
44
ALWAYS GROUND THE UNIT
for the connection of the
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