Page 22
Indoor Unit
Installation
WARNING
ALL WIRING MUST BE PERFORMED
STRICTLY IN ACCORDANCE WITH THE
WIRING DIAGRAM LOCATED ON THE
BACK OF THE INDOOR UNIT S FRONT
PANEL .
’
WARNING
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE
MAIN POWER TO THE SYSTEM.
Step 6: Connect signal and power cables
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 or H05RN-F
•
Signal Cable:
H07RN-F
(Not applicable for North America)
NOTE
: In North America, choose the cable type
according to the local electrical codes and
regulations.
Minimum Cross-Sectional Area of
Power and Signal Cables (For reference)
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
BEFORE PERFORMING ANY
ELECTRICAL WORK, READ THESE
REGULATIONS
1. All wiring must comply with local and national
electrical codes, regulations 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.
5. If connecting power to fixed wiring, a surge
protector and main power switch should be
installed.
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.
Do not let wires touch or rest against refrigerant
tubing, the compressor, or any moving parts
within the unit.
If the unit has an auxiliary electric heater, it must
be installed at least 1 meter (40in) away from
any combustible materials.
To avoid getting an electric shock, never touch
the electrical components soon after the power
supply has been turned off. After turning off
the power, always wait 10 minutes or more
before you touch the electrical components.
10.
11.
12.
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.
NOTE:
In North America, please choose the right
cable size according to the Minimum Circuit
Ampacity indicated on the nameplate of the unit.
Summary of Contents for NH22 Series
Page 38: ......
