Page 17
Indoor Unit
Installation
BEFORE PERFORMING
ELECTRICAL WORK, READ
THESE REGULATIONS
1.
All wiring must comply with local and
national electrical codes, and must be
installed by a licensed electrician.
2.
All electrical connections must be made
according to the Electrical Connection
Diagram located on the panels of the
indoor and outdoor units.
3.
If there is a serious safety issue with
the power supply, stop work immediately.
Explain your reasoning to the client, and
refuse to install the unit until the safety
issue is properly resolved.
4.
Power voltage should be within
90-110% of rated voltage. Insufficient
power supply can cause malfunction,
electrical shock, or fire.
If connecting power to fixed wiring,
install a surge protector and main
power switch with a capacity of 1.5
times the maximum current of the unit.
5.
6.
If connecting power to fixed wiring,
a switch or circuit breaker that
disconnects all poles and has a contact
separation of at least 1/8in (3mm) must
be incorporated in the fixed wiring.
The qualified technician must use an
approved circuit breaker or switch.
7.
Only connect the unit to an individual
branch circuit outlet. Do not connect
another appliance to that outlet.
8.
Make sure to properly ground the
air conditioner.
9.
Every wire must be firmly connected.
Loose wiring can cause the terminal to
overheat, resulting in product
malfunction and possible fire.
10.
Do not let wires touch or rest against
refrigerant tubing, the compressor, or
any moving parts within the unit.
11.
If the unit has an auxiliary electric
heater, it must be installed at least 1
meter (40in) away from any
combustible materials.
Step 6: Connect signal cable
The signal cable enables communication between
the indoor and outdoor units. You must first
choose the right cable size before preparing it for
connection.
Cable Types
•
Indoor Power Cable
(if applicable):
H05VV-F or H05V2V2-F
•
Outdoor Power Cable:
H07RN-F
•
Signal Cable:
H07RN-F
Minimum Cross-Sectional Area of
Power and Signal Cables
Other Regions
Rated Current of
Appliance (A)
Nominal Cross-Sectional
Area (mm²)
> 3 and
≤
6
0.75
> 6 and
≤
10
1
> 10 and
≤
16
1.5
> 16 and
≤
25
2.5
> 25 and
≤
32
4
> 32 and
≤
40
6
CHOOSE THE RIGHT CABLE SIZE
The size of the power supply cable, signal
cable, fuse, and switch needed is determined
by the maximum current of the unit. The
maximum current is indicated on the nameplate
located on the side panel of the unit. Refer to
this nameplate to choose the right cable, fuse,
or switch.
WARNING
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE MAIN
POWER TO THE SYSTEM.
North America
Appliance Amps (A)
AWG
10
18
13
16
18
14
25
12
30
10
Summary of Contents for CS78421-548-754
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