York YKKE Series User manual

Mini-Split Air Conditioner
DC Inverter Compact Cassette Type Unit
All Model Numbers
Installation Manual A-Compact Cassette-160101
New Released
Compact Cassette Type

Accessories .................................................... 04
a. Indoor Unit Parts .............................................. 07
b. Indoor Unit Installation Instructions .................. 08
Safety Precautions ..................................... 05
Outdoor Unit Installation ......................... 11
a. Outdoor Unit Installation Instructions ................. 11
b. Drain Joint Installation ....................................... 12
c. Notes on Drilling Hole in Wall ............................. 12
Drainpipe Installation ............................... 13
Table of Contents
Installation Manual
Indoor Unit Installation ........................... 07
Installation Overview ............................... 06
1
2
5
3
4
6

ePage 3 f
Refrigerant Piping Connection............... 15
A. Notes on Pipe Length and Elevation .................. 15
B. Refrigerant Piping Connection Instructions ........ 16
C. Installation Of The Throttle ............................... 18
Wiring................................................. 19
b. Outdoor Unit Wiring .......................... 19
c. Indoor Unit Wiring ............................. 20
a. Power Specifications ........................... 19
Air Evacuation .......................................... 21
a. Evacuation Instructions ................................. 21
b. Note on Adding Refrigerant ......................... 22
Panel Installation .......................... 23
Test Run............................................. 25
MC MC
7
8
9
10
11
LN

ePage 4 f
Accessories 1
The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to
install the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or cause the
equipment to fail.
Name Shape Quantity
Indoor unit
installation
Installation paper template
(some models)
1
Refrigeration
Fittings
Insulation for gas pipe
fitting (some models)
Insulation for liquid pipe
fitting (some models)
1
Drainpipe
Fittings
Outlet pipe sheath (some
models)
1
Outlet pipe clasp (some
models)
1
Drain joint (some models)
1
Seal ring (some models)
1
Installation
Accessory (some
models)
Ceiling hook
4
Suspension bolt 4
Throttle (some units) 1
Anti-shock rubber 1
1
1
Owner’s manual
Installation manual
1
Optional accessories
There are two types of remote controllers:wired and wireless.
Select a remote controller according to customers request and install in an appropriate place.
Refer to catalogues and technical literature for selecting a suitable remote controller.
This indoor unit requires installation of an optional decoration panel.
s
s

ePage 5 f
Safety Precautions 2
Read Safety Precautions Before Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of
potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
sCarefully read the Safety Precautions before installation.
s In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed air-
conditioning units is highly recommended.
sOnly trained and certified technicians should install, repair and service this air conditioning unit.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to the equipment and
personal property.
sStrictly follow the installation instructions set forth in this manual.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to the equipment.
sBefore you install the unit, consider strong winds, typhoons and earthquakes that might affect your unit and
locate it accordingly. Failure to do so could cause the equipment to fail.
sAfter installation, ensure there are no refrigerant leaks and that the unit is operating properly. Refrigerant is both
toxic and flammable and poses a serious health and safety risk.
Note about Fluorinated Gasses
1. This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas and the amount,
please refer to the relevant label on the unit itself.
2. Installation, service, maintenance and repair of this unit must be performed by a certified technician.
3. Product uninstallation and recycling must be performed by a certified technician.
4. If the system has a leak-detection system installed, it must be checked for leaks at least every 12 months.
5. When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
Failure to observe a warning may result in death. The appliance must be installed in accordance with
national regulations.
Failure to observe a caution may result in injury or equipment damage.
WARNING
CAUTION

ePage 6 f
Installation Overview 3
Unit Installation
Overview
LN
123
4
5
MC MC
6
78
Install the indoor unit
(Page 7)
INSTALLATION ORDER
Install the outdoor unit
(Page 11)
Install the drainpipe
(Page 13)
Evacuate the refrigeration system
(Page 21)
Connect the wires
(Page 19)
Connect the refrigerant pipes
(Page 15)
Install the front panel
(Page 23)
Perform a test run
(Page 25)

ePage 7 f
Indoor Unit Installation 4
Indoor Unit Parts
(within indoor unit)
Drain pipe
Drain pump
Air outlet
Air inlet
Display panel
Front grille
Louver
Refrigerant pipe
Fig. 4.1
Safety Precautions
WARNING
sSecurely install the indoor unit on a structure that
can sustain its weight. If the structure is too weak
the unit may fall causing personal injury, unit and
property damage or death.
sInstall the indoor unit at a height of more than
2.5m (8’) above the floor.
s DO NOT install the indoor unit in the bathroom or
laundry room as excessive moisture can short the
unit and corrode the wiring.
CAUTION
sInstall the indoor and outdoor units, cables and
wires at least 1m (3.2’) from televisions or radios
to prevent static or image distortion. Depending
on the appliances, a 1m (3.2’) distance may not be
sufficient.
sIf the indoor unit is installed on a metal part of the
building, it must be electrically grounded.
Indoor Unit
Installation

ePage 8 f
Indoor Unit Installation Instructions
NOTE: Panel installation should be done after piping
and wiring.
Step 1: Select installation location
The indoor unit should be installed in a location that
meets the following requirements:
The unit is at least 1m (39”) from the nearest wall.
There is enough room for installation and
maintenance.
There is enough room for the connecting pipe and
drainpipe.
The ceiling is horizontal and its structure can sustain
the weight of the indoor unit.
The air inlet and outlet are not impeded.
The airflow can fill the entire room.
There is no direct radiation from heaters.
CAUTION
DO NOT install the unit in the following locations:
In areas with oil drilling or fracking
In coastal areas with high salt content in the air
In areas with caustic gases in the air, such as near
hot springs
In areas with power fluctuations, such as factories
In enclosed spaces, such as cabinets
In kitchens that use natural gas
In areas with strong electromagnetic waves
In areas that store flammable materials or gas
In rooms with high humidity, such as bathrooms or
laundry rooms
RECOMMENDED D ISTANCES BETWEEN THE I NDOOR U NIT AND THE C EILING
The distance between the mounted indoor unit and the internal ceiling should meet the following specifications.
(See Fig. 4.2)
Connecting point
of drain pipe
Connecting point of
refrigerant pipe
(liquid side)
Connecting point of
refrigerant pipe
(gas side)
Front panel
Ground
Ceiling board
>2.5m / 8.2’
60cm / 23.6” (Ceiling hole)
Ceiling
Fig. 4.2
Indoor Unit
Installation
>29cm / 11.4”
26cm / 10.2”

ePage 9 f
CAUTION
The unit body should align perfectly with the hole.
Ensure that the unit and the hole are the same size
before moving on.
2. Drill 4 holes 5cm (2”) deep at the ceiling hook positions
in the internal ceiling. Be sure to hold the drill at a 90°
angle to the ceiling.
3. Using a hammer, insert the ceiling hooks into the
pre-drilled holes. Secure the bolt using the included
washers and nuts.
4. Install the four suspension bolts (See Fig. 4.4).
Step 2: Hang indoor unit.
1. Use the included paper template to cut a rectangular hole in the ceiling, leaving at least 1m (39”) on all sides. The
hole will be 60x60cm (23.6x23.6”) big. Be sure to mark the areas where ceiling hook holes will be drilled.
Fig. 4.4
Fig. 4.3
Indoor Unit
Installation
545mm / 21.5” (Suspension bolt)
570mm / 22.4”(Body)
647mm / 25.5”(Ceiling opening)
523mm / 20.6”
(Suspension bolt)
570mm / 22.4” (Body)
647mm / 25.5” (Ceiling opening)
Refrigerant piping side
Drain hose side
>1m / 39”
>1m / 39”
>1m / 39”
>1m / 39”

ePage 10 f
5. Mount the indoor unit. You will need two people to
lift and secure it. Insert suspension bolts into the unit’s
hanging holes. Fasten them using the included washers
and nuts (See Fig. 4.5).
Fig. 4.5
NOTE: The bottom of the unit should be 24mm (0.9”)
higher than the ceiling board. Generally, L
(indicated in Fig. 4.6) should be half the length of the
suspension bolt or long enough to prevent the nuts from
coming off.
Fig. 4.6
CAUTION
Ensure that the unit is completely level. Improper
installation can cause the drain pipe to back up into the
unit or water leakage.
Indoor Unit
Installation
Wall
Ceiling board
Main body
24mm (0.9”)
L
NOTE: Ensure that the indoor unit is level. The unit is
equipped with a built-in drain pump and float switch.
If the unit is tilted against the direction of condensate
flows (the drainpipe side is raised), the float switch may
malfunction and cause water to leak.
Water level
Fig. 4.7
NOTE FOR NEW HOME INSTALLATION
When installing the unit in a new home, the ceiling
hooks can be embedded in advance. Make sure that the
hooks do not come loose due to concrete shrinkage.
After installing the indoor unit, fasten the installation
paper template onto the unit with bolts (M6X12) to
determine in advance the dimension and position of the
opening on the ceiling. Follow the instructions above for
the remainder of the installation.
Installation template
M6 x 12 Bolts
Main body
Fig. 4.8

ePage 11 f
Outdoor Unit Installation 5
Outdoor Unit Installation Instructions
Step 1: Select installation location.
The outdoor unit should be installed in the location that
meets the following requirements:
Place the outdoor unit as close to the indoor unit as
possible.
Ensure that there is enough room for installation and
maintenance.
The air inlet and outlet must not be obstructed or
exposed to strong wind.
Ensure the location of the unit will not be subject to
snowdrifts, accumulation of leaves or other seasonal
debris. If possible, provide an awning for the unit.
Ensure the awning does not obstruct airflow.
The installation area must be dry and well ventilated.
There must be enough room to install the connecting
pipes and cables and to access them for maintenance.
The area must be free of combustible gases and
chemicals.
The pipe length between the outdoor and indoor unit
may not exceed the maximum allowable pipe length.
If possible, DO NOT install the unit where it is
exposed to direct sunlight.
If possible, make sure the unit is located far away
from your neighbors’ property so that the noise from
the unit will not disturb them.
If the location is exposed to strong winds (for
example: near a seaside), the unit must be placed
against the wall to shelter it from the wind. If
necessary, use an awning. (See Fig. 5.1 & 5.2)
Install the indoor and outdoor units, cables and wires
at least 1 meter from televisions or radios to prevent
static or image distortion. Depending on the radio
waves, a 1 meter distance may not be enough to
eliminate all interference.
Strong wind
Strong wind
Strong wind
Fig. 5.1 Fig. 5.2
Step 2: Install outdoor unit.
Fix the outdoor unit with anchor bolts (M10)
>60cm / 23.6”
Fix with bolts
CAUTION
s Be sure to remove any obstacles that
may block air circulation.
s Make sure you refer to Length
Specifications to ensure there is
enough room for installation and
maintenance.
Fig. 5.3
Outdoor Unit
Installation

ePage 12 f
Table 5.1: Length Specifications of Split Type Outdoor
Unit (unit: mm/inch)
Split Type Outdoor Unit
(Refer to Fig 5.4, 5.5 and Table 5.1)
Outdoor Unit
Installation
NOTE: The minimum distance between the outdoor
unit and walls described in the installation guide does
not apply to airtight rooms. Be sure to keep the unit
unobstructed in at least two of the three directions (M,
N, P) (See Fig. 5.6)
M
N
P
30 cm / 11.8” from back wall
60 cm / 23.6” on right
60 cm / 23.6” above
30 cm / 11.8” on left
200 cm / 78” in front
Fig. 5.6
Drain Joint Installation
Before bolting the outdoor unit in place, you must install
the drain joint at the bottom of the unit. (See Fig. 5.7)
1. Fit the rubber seal on the end of the drain joint
that will connect to the outdoor unit.
2. Insert the drain joint into the hole in the base pan
of the unit.
3. Rotate the drain joint 90° until it clicks in place
facing the front of the unit.
4. Connect a drain hose extension (not included) to
the drain joint to redirect water from the unit
during heating mode.
NOTE: Make sure the water drains to a safe location
where it will not cause water damage or a slipping
hazard.
Seal
Drain joint
(A) (B)
Base pan hole of
outdoor unit
Seal
Fig. 5.7
Notes On Drilling Hole In Wall
You must drill a hole in the wall for the refrigerant
piping, and the signal cable that will connect the indoor
and outdoor units.
1. Determine the location of the wall hole based on
the location of the outdoor unit.
2. Using a 65-mm (2.5”) core drill, drill a hole in the
wall.
NOTE: When drilling the wall hole, make sure
to avoid wires, plumbing, and other sensitive
components.
3. Place the protective wall cuff in the hole. This
protects the edges of the hole and will help seal it
when you finish the installation process.
Fig. 5.5
A
B
D
W
H
Fig. 5.4
Outdoor Unit Dimensions
W x H x D
Mounting Dimensions
Distance A Distance B
780x540x250 (30.7x21.25x9.85) 549 (21.6) 276 (10.85)
760x590x285 (29.9x23.2x11.2) 530 (20.85) 290 (11.4)
810x558x310 (31.9x22x12.2) 549 (21.6) 325 (12.8)
845x700x320 (33.27x27.5x12.6) 560 (22) 335 (13.2)
845x702x363 (33.27x27.6x14.3) 540 (21.26) 350 (13.8)
800x554x333 (31.5x21.8x13.1) 514 (20.24) 340 (13.39)
770x555x300 (30.3x21.85x11.81) 487 (19.2) 298 (11.73)

ePage 13 f
Drainpipe
Installation
Drainpipe Installation 6
NOTE ON DRAINPIPE INSTALLATION
s When using an extended drainpipe, tighten the
indoor connection with an additional protection
tube to prevent it from pulling loose.
s The drainpipe should slope downward at a gradient
of at least 1/100 to prevent water from flowing
back into the air conditioner.
s To prevent the pipe from sagging, space hanging
wires every 1-1.5m (40-59”).
s If the outlet of the drainpipe is higher than the
body’s pump joint, provide a lift pipe for the
exhaust outlet of the indoor unit. The lift pipe must
be installed no higher than 75cm (29.5”) from the
ceiling board and the distance between the unit
and the lift pipe must be less than 30cm (11.8”).
Incorrect installation could cause water to flow
back into the unit and flood.
s To prevent air bubbles, keep the drain hose level or
slightly tiled up (<75mm / 3”).
Fig. 6.3
NOTE: When connecting multiple drainpipes, install the
pipes as shown in Fig 6.4.
0-53cm
(20.8”)
10cm
(4”)
Fig. 6.4
The drainpipe is used to drain water from the unit.
Improper installation may cause unit and property damage.
CAUTION
s Insulate all piping to prevent condensation, which
could lead to water damage.
s If the drainpipe is bent or installed incorrectly, water
may leak and cause a malfunction of the water-
level switch.
s In HEAT mode, the outdoor unit will discharge
water. Ensure that the drain hose is placed in
an appropriate area to avoid water damage and
slippage due to frozen drain water.
s DO NOT pull the drainpipe forcefully as this could
cause it to disconnect.
NOTE ON PURC HASING PIPES
This installation requires a polyethylene tube (outside
diameter = 3.7-3.9cm, inside diameter = 3.2cm), which
can be obtained at your local hardware store or from
your dealer.
Indoor Drainpipe Installation
Install the drainpipe as shown in Figure 6.2.
1. Cover the drainpipe with heat insulation to prevent
condensation and leakage.
2. Attach the mouth of the drain hose to the unit’s outlet
pipe. Sheath the mouth of the hose and clip it firmly
with a pipe clasp. (Fig 6.1)
Drainpipe
connecting port
Drain hose
Metal clamp Insulation
Fig. 6.1
Downward slope
1/100
1-1.5m
(39-59”)
Fig. 6.2
75cm
(29.5”)
Ceiling
1 - 1.5m
(39-59”)
0 - 75mm
(3”)
30cm (11.8”)
53cm
(20.8”)
22cm
(8.6”)

ePage 14 f
Drainpipe
Installation
3. Using a 65-mm (2.5”) core drill, drill a hole in the wall.
Make sure that the hole is drilled at a slight downward
angle, so that the outdoor end of the hole is lower
than the indoor end by about 12mm (0.5”). This will
ensure proper water drainage (See Fig. 6.5). Place the
protective wall cuff in the hole. This protects the edges
of the hole and will help seal it when you finish the
installation process.
Wall
IndoorOutdoor
12mm / 0.5 inch
Fig. 6.5
NOTE: When drilling the wall hole, make sure to avoid
wires, plumbing, and other sensitive components.
4. Pass the drain hose through the wall hole. Make sure
the water drains to a safe location where it will not
cause water damage or a slipping hazard.
NOTE: The drainpipe outlet should be at least 5cm (1.9”)
above the ground. If it touches the ground, the unit may
become blocked and malfunction. If you discharge the
water directly into a sewer, make sure that the drain has
a U or S pipe to catch odors that might otherwise come
back into the house.

ePage 15 f
Refrigerant Piping
Connection
Refrigerant Piping Connection 7
Safety Precautions
WARNING
sAll field piping must be completed by a licensed
technician and must comply with the local and
national regulations.
sWhen the air conditioner is installed in a small
room, measures must be taken to prevent the
refrigerant concentration in the room from
exceeding the safety limit in the event of
refrigerant leakage. If the refrigerant leaks and
its concentration exceeds its proper limit, hazards
due to lack of oxygen may result.
sWhen installing the refrigeration system, ensure
that air, dust, moisture or foreign substances do
not enter the refrigerant circuit. Contamination
in the system may cause poor operating capacity,
high pressure in the refrigeration cycle, explosion
or injury.
sVentilate the area immediately if there is
refrigerant leakage during the installation. Leaked
refrigerant gas is both toxic and flammable.
Ensure there is no refrigerant leakage after
completing the installation work.
Notes On Pipe Length and Elevation
Ensure that the length of the refrigerant pipe, the number
of bends, and the drop height between the indoor and
outdoor units meets the requirements shown in Table 7.1:
Table 7.1: The Maximum Length And Drop Height
Based on Models. (Unit: m/ft.)
Type of model Capacity
(Btu/h)
Length of
piping
Maximum drop
height
50Hz T1
Condition/R22
Split Type
12K 15/49 8/26
18K-24K 30/98.4 10/32.8
30K-42K 50/164 20/65.6
48K-60K 50/164 25/82
50Hz Vertical
Discharge, 60Hz
T1 condition/ R22
Split Type, Vertical
Discharge
12K 15/49 8/26
18K-24K 30/98.4 10/32.8
30K-60K 30/98.4 20/65.6
R410A Inverter
Split Type
<15K 25/82 10/32.8
t15K - <24K 30/98.4 20/65.6
t24K - <36K 50/164 25/82
t36K - d60K 65/213 30/98.4
R410A Split Type
12K 15/49 8/26
18K-30K 25/82 15/49
36K 30/98.4 20/65.6
48K-60K 50/164 25/82
50Hz/60Hz T3
condition (outdoor
unit down)
18K-24K 35/114 10/32.8
30K 30/98.4 15/49
36K 30/98.4 20/65.6
42K-60K 50/164 25/82
50Hz/60Hz T3
Condition (outdoor
unit up)
18K-24K 25/82 15/49
30K 30/98.4 20/65.6
36K 30/98.4 25/82
42K 50/164 30/98.4
48K-60K 50/164 35/114
Unit with quick
joint 12K-18K 5/16.4 5/16.4

ePage 16 f
Refrigerant Piping
Connection
Refrigerant Piping Connection Instructions
CAUTION
s The branching pipe must be installed horizontally.
An angle of more than 10° may cause malfunction.
s DO NOT install the connecting pipe until both
indoor and outdoor units have been installed.
s Insulate both the gas and liquid piping to prevent
water leakage.
Step1: 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.
2. Using a pipe cutter, cut the pipe a little longer than
the measured distance.
CAUTION
DO NOT deform pipe while cutting. Be extra careful not
to damage, dent, or deform the pipe while cutting. This
will drastically reduce the heating efficiency of the unit.
1. Make sure that the pipe is cut at a perfect 90°
angle. Refer to Fig. 7.2 for examples of bad cuts
Oblique Rough Warped
90°
Fig. 7.2
Step 2: Remove burrs.
Burrs can affect the air-tight seal of refrigerant piping
connection. They must be completely removed.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all burrs
from the cut section of the pipe.
Pipe
Reamer
Point dow n
Fig. 7.3
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight seal.
1. After removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of pipe. Make sure
they are facing in the right direction, because you
can’t put them on or change their direction after
flaring. See Fig. 7.4
Flare nut
Copper pipe
Fig. 7.4
4. Remove PVC tape from ends of pipe when ready to
perform flaring work.
5. Clamp flare form on the end of the pipe. The end
of the pipe must extend beyond the flare form.
Flare form
Pipe
Fig. 7.5

ePage 17 f
Refrigerant Piping
Connection
6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clockwise until
the pipe is fully flared. Flare the pipe in accordance
with the dimensions shown in table 7-3.
Table 7.3: PIPING EXTENSION BEYOND FLARE FORM
Pipe
gauge
Tightening
torque
Flare dimension (A)
(Unit: mm/Inch)
Flare shape
Min. Max .
Ø 6.4 14.2-17.2 N.m
(144-176 kgf.cm) 8.3/0.3 8.3/0.3
R0.4~0.8
45 2
90 
4
A
Fig. 7.6
Ø 9.5 32.7-39.9 N.m
(333-407 kgf.cm) 12.4/0.48 12.4/0.48
Ø 12.7 49.5-60.3 N.m
(504-616 kgf.cm) 15.4/0.6 15.8/0.6
Ø 15.9 61.8-75.4 N.m
(630-770 kgf.cm) 18.6/0.7 19/0.74
8. Remove the flaring tool and flare form, then inspect
the end of the pipe for cracks and even flaring.
Step 4: Connect pipes
Connect the copper pipes to the indoor unit first, then
connect it to the outdoor unit. You should first connect the
low-pressure pipe, then the high-pressure pipe.
1. When connecting the flare nuts, apply a thin coat
of refrigeration oil to the flared ends of the pipes.
2. Align the center of the two pipes that you will
connect.
Indoor unit tubing Flare nut Pipe
Fig. 7.7
3. Tighten the flare nut as tightly as possible by hand.
4. Using a spanner, grip the nut on the unit tubing.
5. While firmly gripping the nut, use a torque wrench
to tighten the flare nut according to the torque
values in table 7-.3.
NOTE: Use both a spanner and a torque wrench when
connecting or disconnecting pipes to/from the unit.
Fig. 7.8
CAUTION
s Ensure to wrap insulation around the piping. Direct
contact with the bare piping may result in burns or
frostbite.
s Make sure the pipe is properly connected. Over
tightening may damage the bell mouth and under
tightening may lead to leakage.
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle according to the
diagram below. DO NOT bend the tubing more than
90° or more than 3 times.
Bend the pipe with thumb
min-radius 10cm (3.9”)
Fig. 7.9
6. After connecting the copper pipes to the indoor
unit, wrap the power cable, signal cable and the
piping together with binding tape.
NOTE: DO NOT intertwine signal cable with other wires.
While bundling these items together, do not intertwine
or cross the signal cable with any other wiring.
7. Thread this pipeline through the wall and connect
it to the outdoor unit.
8. Insulate all the piping, including the valves of the
outdoor unit.
9. Open the stop valves of the outdoor unit to start
the flow of the refrigerant between the indoor and
outdoor unit.
CAUTION
Check to make sure there is no refrigerant leak after
completing the installation work. If there is a refrigerant
leak, ventilate the area immediately and evacuate
the system (refer to the Air Evacuation section of this
manual).

ePage 18 f
Refrigerant Piping
Connection
Installation Of The Throttle. (Some Models)
Indoor
Indoor
Indoor
Outdoor
Outdoor
Outdoor
1 Throttle
2 Liquid pipe
3 Gas pipe
Precautions
- For ensuring throttled efficiency, please mount the throttle
as horizontally as possible.
- Wrap the supplied anti-shock rubber at external of the
throttle for denoise.
1 Anti-shock rubber
2 Throttle

ePage 19 f
Wiring 8
Safety Precautions
WARNING
sBe sure to disconnect the power supply before
working on the unit.
sAll electrical wiring must be done according to
local and national regulations.
sElectrical wiring must be done by a qualified
technician. Improper connections may cause
electrical malfunction, injury and fire.
sAn independent circuit and single outlet must
be used for this unit. DO NOT plug another
appliance or charger into the same outlet. If the
electrical circuit capacity is not enough or there
is a defect in the electrical work, it can lead to
shock, fire, unit and property damage.
sConnect the power cable to the terminals and
fasten it with a clamp. An insecure connection
may cause fire.
sMake sure that all wiring is done correctly and the
control board cover is properly installed. Failure
to do so can cause overheating at the connection
points, fire, and electrical shock.
sEnsure that main supply connection is made
through a switch that disconnects all poles, with
contact gap of a least 3mm (0.118”).
s DO NOT modify the length of the power cord or
use an extension cord.
CAUTION
sConnect the outdoor wires before connecting the
indoor wires.
sMake sure you ground the unit. The grounding
wire should be away from gas pipes, water pipes,
lightning rods, telephone or other grounding
wires. Improper grounding may cause electrical
shock.
s DO NOT connect the unit with the power source
until all wiring and piping is completed.
sMake sure that you do not cross your electrical
wiring with your signal wiring, as this can cause
distortion and interference.
Follow these instructions to prevent distortion when the
compressor starts:
sThe unit must be connected to the main outlet.
Normally, the power supply must have a low output
impedance of 32 ohms.
sNo other equipment should be connected to the
same power circuit.
sThe unit’s power information can be found on the
rating sticker on the product.
Outdoor Unit Wiring
Power Specifications
WARNING
Before performing any electrical or wiring work, turn off
the main power to the system.
1. Prepare the cable for connection
a. You must first choose the right cable size before
preparing it for connection. Be sure to use H07RN-F
cables.
Table 8.1: Minimum Cross-Sectional Area of Power
and Signal Cables
North America
Rated Current of
Appliance (A) AWG
d718
7 - 13 16
13 - 18 14
18 - 25 12
25 - 30 10
Table 8.2: Other Regions
Rated Current of
Appliance (A) Nominal Cross-Sectional
Area (mm²)
d6 0.75
6 - 10 1
10 - 16 1.5
16 - 25 2.5
25- 32 4
32 - 45 6
Wiring

ePage 20 f
b. Using wire strippers, strip the rubber jacket from
both ends of signal cable to reveal about 15cm
(5.9”) of the wires inside.
c. Strip the insulation from the ends of the wires.
d. Using a wire crimper, crimp u-lugs on the ends of
the wires.
NOTE: While connecting the wires, please strictly follow
the wiring diagram (found inside the electrical box cover).
2. Remove the electric cover of the outdoor unit.
If there is no cover on the outdoor unit, disassemble
the bolts from the maintenance board and remove the
protection board. (See Fig. 8.1)
Cover
Screw
Fig. 8.2
3. Connect the u-lugs to the terminals
Match the wire colors/labels with the labels on the
terminal block, and firmly screw the u-lug of each wire
to its corresponding terminal.
4. Clamp down the cable with designated cable clamp.
5. Insulate unused wires with electrical tape. Keep them
away from any electrical or metal parts.
6. Reinstall the cover of the electric control box.
Indoor Unit Wiring
1. Prepare the cable for connection
a. Using wire strippers, strip the rubber jacket from
both ends of signal cable to reveal about 15cm
(5.9”) of the wires inside.
b. Strip the insulation from the ends of the wires.
c. Using wire crimper, crimp the u-lugs to the ends
of the wires.
2. Open the front panel of the indoor unit. Using a
screwdriver, remove the cover of the electric control
box on your indoor unit.
3. Thread the power cable and the signal cable through
the wire outlet.
4. Connect the u-lugs to the terminals.
Match the wire colors/labels with the labels on the
terminal block, and firmly screw the u-lug of each
wire to its corresponding terminal. Refer to the Serial
Number and Wiring Diagram located on the cover of
the electric control box.
CAUTION
s While connecting the wires, please strictly follow
the wiring diagram.
s The refrigerant circuit can become very hot. Keep
the interconnection cable away from the copper
tube.
5. Clamp down cable with the designated cable clamp to
secure it in place. The cable should not be loose, and
should not pull on the u-lugs.
6. Reinstall the electric box cover and the front panel of
the indoor unit.
Wiring
1 Control box lid
2 Wiring diagram label
3 Power supply terminal block
4 Clamp for wiring
5 Wiring between units
6 Plastic cover
7 Clamp (field supply)