17
8.2
Interconnecting cable
The electrical cable must be one integral piece, without any joints. When installing the cable under
the floor, it must be protected and isolated from any possible contact with water. When the cable path runs
inside the wall or an acoustic ceiling, it will be protected with a fire-retardant tubing system. In addition,
the communication cable between the two units should be interconnected by using shielded cable.
e pplicable wiring diagram in Figure 19 or 20. Refer to local electrical codes and regulations.
8.3
Display control unit
8.3.1 Location criteria
It is recommended to install the Display Control Unit close to a ceiling in a central and neutral
zone at typical conditions. In addition, the aesthetic aspect should be considered. The
Display Control Unit is connected to the main control board on the air conditioner (the indoor
unit) by a communication cable. The cable is connected to the Display Control Unit by a
quick-connector. (8 pin plug)
8.3.2 Installation of Display Control Unit on Wall
Drill a 12 mm diameter hole on the wall, for routing the communication cable (See figure 21
item 2). Open the unit cover, drill 3 holes in the wall to match the holes in the Display Control
Unit, install the inserts and fasten the unit to the wall with 3 screws.
The Display Control Unit (4) is provided of a special communication cable (3), 7 meters long,
terminated by a plug, connected in the housing itself to a distribution box (2), which enables
the control of the air conditioner from several different rooms, each one from its own Display
Control Unit (See figure 21 and 22). Connect the quick connector to the appropriate socket
on the main control board in the indoor unit electrical box (1).
WARNING
The plug should not be cut off the communication cable if the cable length is insufficient. In
such case, a 5-meter extension cable may be added.
8.3.3 Considerations in locating the Remote Control Unit
a) Locate the Remote Control Unit in such a way that when mounted on its support on the
wall, it will be in line sight with the Display Control Unit (at less than 8 m).
b) It is recommended to establish the final location of the Remote Control Unit only after
the first operation, assuring proper transmission and reception between the Remote
Control Unit and the Display Control Unit.
In addition,
the communication cable between the two units should be interconnected by using shielded cable.
See applicable wiring diagram in Figure 19 or 20. Refer to local electrical codes and regulations.
