17
ELECTRICAL WORK
Fig.61
Connect the cable to the outdoor unit
1. Remove the electrical control board cover
from the outdoor unit by loosening the screw
as shown in Fig.61
2. Connect the electrical cables to the terminals
as identified with their respective matched
terminals on the terminal blocks of the indoor
and outdoor units.
3. Secure the cable onto the control board with
the cord clamp.
4. To prevent the ingress of water, form a loop
in the connecting cables as illustrated in the
installation diagram of the indoor and outdoor
units.
5. Isolate any exposed wires/cables with electrical
terminators. Arrange the wiring to ensure it
does not touch any electrical or metal parts.
Wiring connection
NOTE: Before performing any electrical
work, turn off the mains power to the system.
Connection Cable
10mm
40mm
CAUTION
Do not touch the capacitors even if you
have disconnected the power. A stored
electrical charge may be evident, causing
an electrical shock. For your safety, wait
at least 5 minutes after the power has
been turned off to start work on the system.
Power is supplied from the outdoor
unit. The indoor units are connected with
power and signal wires. Ensure they are
correctly connected, otherwise the system
may not run, or will run abnormally.
Fig.62
CAUTION
Be sure to connect the indoor units (A, B, C, D,
E) to the Active and Neutral terminals of the signal
wires (A, B, C, D, E) of outdoor unit as identified
with their respective matched terminals.
Incorrect/incomplete wiring connections may cause
the system to malfunction.
Minimum nominal cross-sectional area
of conductors:
Rated current of appliance
(A)
Nominal cross-sectional
2
area (mm)
>3 and <6
>6 and <10
>10 and <16
>16 and <25
0.75
1
1.5
2.5
Screw
Cover
Connective cable
of indoor unit and
outdoor unit
Connective cable
of indoor unit and
outdoor unit
Connective cable
of indoor unit and
outdoor unit
Connective cable
of indoor unit and
outdoor unit
Connective cable
of indoor unit and
outdoor unit
One-two
One-three
One-four
One-five
POWER
E
E
The cable size and the current rating of the
circuit breaker are determined by the maximum
current on the nameplate, located on the side
panel of the unit. Please refer to the nameplate
before selecting the cable, circuit breaker and/or
switch. Please refer to the above tables and
choose the appropriate cable size to suit the
electrical requirements of the system.
NOTE:
