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Outdoor Unit

Installation

Step 4: Connect signal and power cables

The outside unit’s terminal block is protected by

an electrical wiring cover on the side of the unit.

A comprehensive wiring diagram is printed on

the inside of the wiring cover.

WARNING

1. Prepare the cable for connection:

USE THE RIGHT CABLE

•

Indoor Power Cable (if applicable): H05VV-F

or H05V2V2-F

•

Outdoor Power Cable: H07RN-F

•

Signal Cable: H07RN-F

a. Using wire strippers, strip the rubber

jacket from both ends of cable to reveal

about 40mm (1.57in) of the wires inside.

b. Strip the insulation from the ends of the

wires.

c. Using a wire crimper, crimp u-lugs on the

ends of the wires.

PAY

ATTENTION TO LIVE WIRE

While crimping wires, make sure you clearly

distinguish the Live (“L”) Wire from other wires.

2. Unscrew the electrical wiring cover and remove it.

3. Unscrew the cable clamp below the terminal

block and place it to the side.

4. Connect the wire according to the wiring

diagram, and firmly screw the u-lug of each

wire to its corresponding terminal.

5. After checking to make sure every connection is

secure, loop the wires around to prevent rain

water from flowing into the terminal.

6. Using the cable clamp, fasten the cable to the

unit. Screw the cable clamp down tightly.

7. Insulate unused wires with PVC electrical tape.

Arrange them so that they do not touch any

electrical or metal parts.

8. Replace the wire cover on the side of the unit,

and screw it in place.

1. Remove the wire cover from the unit by

loosening the 3 screws.

2. Dismount caps on the conduit panel.
3. Temperarily mount the conduit tubes(not

included) on the conduit panel.

4. Properly connect both the power supply and

low voltage lines to the corresponding
terminals on the terminal block.

5. Ground the unit in accordance with local codes.
6. Be sure to size each wire allowing several inches

longer than the required length for wiring.

7. Use lock nuts to secure the conduit tubes.

BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE MAIN
POWER TO THE SYSTEM.

WARNING

ALL WIRING WORK MUST BE PERFORMED
STRICTLY IN ACCORDANCE WITH THE
WIRING DIAGRAM LOCATED INSIDE OF
WIRE COVER OF THE OUTDOOR UNIT .

CHOOSE THE RIGHT CABLE SIZE

In North America

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.

Cover

Screw

Wire Cover

Over 1.57in.(40mm)

Terminal block

Conduit panel

Connecting cable

Power supply cord

Please select the appropriate through-hole according
to the diameter of the wire.

Note on Pipe Length

The length of refrigerant piping will affect the performance and energy efficiency of the unit. Nominal

efficiency is tested on units with a pipe length of 5 meters (16.5ft). A minimum pipe run of 3 metres is
required to minimise vibration & excessive noise.
In special tropical area, for the R290 refrigerant models, no refrigerant can be added and the maximum
length of refrigerant pipe should not exceed 10 meters(32.8ft).

Connection Instructions – Refrigerant Piping

Step 1: Cut pipes

When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient operation and minimize the
need for future maintenance.

1. Measure the distance between the indoor

and outdoor units.

Refer to the table below for specifications on the maximum length and drop height of piping.

When connecting refrigerant piping,

do not

let substances or gases other than the specified

refrigerant enter the unit. The presence of other gases or substances will lower the unit’s capacity,

and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and
injury.

2. Using a pipe cutter, cut the pipe a little longer

than the measured distance.

3. Make sure that the pipe is cut at a perfect 90°

angle.