2.4.6 Electrical connections
Cables with the following characteristics are required for
power supply and communication between the indoor
and outdoor units:
Power supplied
Indoor
from outdoor unit
unit
n° cables/cross
section
20M
2 x 1.5mm
27M
2 x 1.5mm
35M
2 x 1.5mm
53M
2 x 1.5mm
70M
2 x 2.5mm
The indicated cross-sections are suitable for a wiring
length of up to 5 metres.
f
ATTENTION ELECTRIC DANGER
Before making electrical connections, turn off
the main switch of the system.
l
WARNING
WRITE DOWN THE SPECIFICATIONS OF
THE FUSES.
The air conditioner board (PCB) is equipped
with a fuse for overcurrent protection. Fuse
specifications are printed on the circuit board,
for example:
Indoor unit: T5A/250VAC
NOTE: The fuse is ceramic.
1 Prepare the cable for connection:
– Using a wire stripper, strip the rubber sheath at
both ends of the cable and expose approximately
40 mm of the internal conductors.
– Strip the insulation sheath at the ends of the
conductors.
– Using a crimping tool, crimp U-type wire terminals
to the ends of the conductors.
m
CAUTION
When crimping, clearly identify live cables ("L")
and other cables.
2 Open the front panel of the indoor unit.
3 Using a screwdriver, open the terminal compartment
cover on the right side of the unit. This will give you
access to the terminal block.
18
Signal from outdoor
unit
n° cables/cross
section
+ G
2 x 1.5mm
2
2
+ G
2 x 1.5mm
2
2
+ G
2 x 1.5mm
2
2
+ G
2 x 1.5mm
2
2
+ G
2 x 2.5mm
2
2
The wiring diagram is shown
inside the terminal compartment
cover of the indoor unit.
l
WARNING
All connections must be made exactly as
shown in the wiring diagram on the inside of
the terminal block cover of the indoor unit.
4 Unscrew the cable clamp under the terminal block
and hold it aside.
5 Looking at the back of the unit, remove the plastic
panel located on the left side of the base.
6 Route the electrical cables through this opening,
proceeding from the back of the unit to the front.
7 Looking at the front side of the unit, match the colours
of the cables to the labels on the terminal block,
connect the U-shaped terminals and screw each
cable securely to the corresponding terminal.
a
CAUTION DANGER
DO NOT SWITCH LIVE AND NEUTRAL CABLES.
Such a configuration is dangerous and may
cause the air conditioner to malfunction.
8 Check that all connections are stable, then close the
cable clamp to secure the signal cable to the unit.
Screw the cable clamp on firmly.
9 Replace the cover on the front side of the unit and
replace the plastic panel on the back.
Installation
Terminal block
Cover
Screw
Cable clamp
Fig. 13