Runway GK-C03NC1AD User manual

Rooftop Packaged
Commercial Air Conditioners
Owner's Manual
Thank you for choosing Commercial Air Conditioners, please read this owner’s manual
carefully before operation and retain it for future reference.

Preface
Please carefully read this manual before installation and operation. Instructions before reading
this manual:
(1) For guaranteeing personal safety when operating this system, please strictly follow the
instructions listed in the manual.
(2) Make sure that this manual is kept by operators and serviceman.
(3) Please contact RUNWAY Commercial AC Management Dept. immediately when the unit can not
run normally.
① Information on the nameplate (including model, cooling capacity, product number and
delivery date).
② Malfunction (Describe the actual condition before and after the error happens in details).
(4) Every unit has passed through strictly test and trial run before delivery. In the event of
damage to the unit due to improper disassembly, user is not allowed to dismantle and check
the unit by themselves. Please contact local dealer, then RUNWAY professional serviceman will
help to check the unit.
(5) All the information and illustrations shown in this manual are all for reference. Manufacturer
reserves the rights of making necessary change at anytime without advance notice owing to
design improvement or other reasons.

Contents
1. Safety Considerations ...............................................................................1
2.Product Introduction ...................................................................................2
2.1 Nominal Operating Condition ..............................................................2
2.2 Operating Range .................................................................................2
3.Pre-installation Instruction ..........................................................................2
3.1 Checking Product Received ................................................................2
3.2 Before Beginning Installation...............................................................2
3.3 Codes & Regulations...........................................................................3
3.4 Replacement Parts..............................................................................3
4.Installation Instructions...............................................................................3
4.1 Physical Dimension .............................................................................3
4.2 General Information.............................................................................6
4.3 Location...............................................................................................7
4.4 Crane Way...........................................................................................7
4.5 Installation Positions and Clearances .................................................8
4.6 Ductwork ........................................................................................... 11
4.7 Installation of Condensate Pipe.........................................................12
4.8 Adjust the Tightness of the Belt (Only above 5 Ton)..........................12
5.Electrical Installation.................................................................................14
5.1 Electrical Date and Wire Sizing .........................................................14
5.2 Connect Wiring to the Terminals........................................................15
5.3 Electrical Connections-supply Voltage ..............................................16
5.4 Wiring Diagram..................................................................................17
6.Trial Run ...................................................................................................21
6.1 Preparation for Trial Run ...................................................................21
6.2 Trial Run ............................................................................................21
7.Troubleshooting .......................................................................................21
8.Error Code Meaning .................................................................................22
9.Maintenance.............................................................................................22

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1. Safety Considerations
The following symbols and labels are used throughout this manual to indicate immediate or
potential hazards. It is the owner’s responsibility to read and comply with all safety information and
instructions accompanying these symbols. Failure to heed safety information increases the risk of
serious personal injury or death, property damage and/or product damage.
Warning:
A symbol indicating that improper operation might cause human death or severe injuries.
Caution:
A symbol indicating that improper operation might cause human injury or property damage.
Warning:
(1) This unit shall be used in ofces, restaurants, residences or similar places.
(2) Please seek an authorized repair station for installation work. Improper installation might
cause water leakage, electric shock or re.
(3) Please install at a place strong enough to support the weight of air conditioner unit. If not,
the air conditioner unit might fall down and cause human injury or death.
(4) To ensure proper drainage, the drainage pipe shall be correctly installed according to
installation instructions. Improper installation of pipes might cause leakage.
(5) Keep air ow to avoid shortage of oxygen in the room.
(6) Do not use or store ammable, explosive, poisonous or other dangerous substances beside
the air conditioner.
(7) In case of trouble (e.g. burnt smell), please immediately cut off the main power of air
conditioner unit.
Caution:
(1) Before installation, please check the power supply for compliance with the ratings on
nameplate. Check the power safety as well.
(2) Before use, please check and confirm if the drainage pipes and cables are correctly
connected, hence to eliminate the risk of water leakage, electric shock or re.
(3) Main power must be securely earthed to ensure effective grounding of air conditioner unit
and avoid the risk of electric shock. Please do not connect the earthing cable to coal gas
pipe, water pipe, lightning rod or telephone line.
(4) Once started, the air conditioner shall not be stopped at least after 5 minutes or longer;
otherwise the oil return to compressor may be affected.
(5) Do not let the child to operate the air conditioner unit.
(6) Do not operate the air conditioner unit with wet hands.
(7) Please disconnect the main power before cleaning the air conditioner or replacing the air
lter.
(8) Please disconnect the main power if to put the air conditioner unit out of use for a long
period.
(9) Please do not expose the air conditioner unit directly under corrosive environment with
water or moisture.
(10) Please do not foot on or place any goods on air conditioner unit.
(11) After electrical installation, the air conditioner unit shall be energized for electrical leakage

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test.
(12) An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in xed wiring.
(13) The appliance shall be installed in accordance with national wiring regulations.
(14) The temperature of refrigerant circuit will be high, please keep the interconnection cable
away from the copper tube.
2.Product Introduction
RUNWAY rooftop packaged units provide a wide capacity range from 3 to 30 Ton. These units are
completely assembled, piped and wired at the factory to provide one-piece shipment and rigging.
Each unit is pressurized with a holding charge of refrigerant-22 for storage and shipping.
The compact design, attractive appearance, outstanding anti-rust cabinet and quiet operation
make these units suitable for almost any manufactured or modular homes.
2.1 Nominal Operating Condition
Item Outdoor Conditon Indoor Condition
DB Temperatrue(°C) WB Temperatrue(°C) DB Temperatrue(°C) WB Temperatrue(°C)
Cooling 35 24 27 19
Heating 7 6 20 15
2.2 Operating Range
Item Outdoor Condition (DB °C)
Cooling 21~52
Heating -7~24
3.Pre-installation Instruction
3.1 Checking Product Received
Upon receiving the product, check any damage from transportation. Shipping damage is
the responsibility of the carrier. Verify the model number, specifications and accessories are
correct prior to installation. The distributor or manufacturer will not accept claims from dealers for
transportation damage or installation of incorrectly shipped units.
3.2 Before Beginning Installation
Carefully read all instructions for the installation prior to installing product. Make sure each step
or procedure is understood and any special considerations are taken into account before starting
installation. Assemble all tools, hardware and supplies needed to complete the installation. Some
items may need to be purchased locally. Make sure everything needed to install the product is on
hand before starting.

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3.3 Codes & Regulations
This product is designed and manufactured to comply with national codes. It is installer’s
responsibilities to install the product in accordance with such codes and/or any prevailing local
codes/regulations. The manufacturer assumes no responsibilities for equipment installed in violation
of any codes or regulations.
3.4 Replacement Parts
When reporting shortages or damages, or ordering repair parts, give the complete product
model and serial numbers as stamped on the product. Replacement parts for this product are
available through your contractor or local distributor.
4.Installation Instructions
4.1 Physical Dimension
B
C
A
D
3~5TON 8~15TON
B
C
A
D
A
B
C
D
20~30TON 25, 30TON(Heat Pump)
DIMENSION
(mm) 3,4Ton 5Ton 8,10Ton 13,15Ton 20,25,30Ton 25Ton (Heat Pump)
30Ton
(Heat Pump)
A 640 790 1117 1190 1357 1775 2283
B 1055 1055 2006 2205 2870 2870 2870
C 1345 1345 1436 1610 2120 2120 2120
D 75 75 90 88 95 95 95

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OPQR
ST
U
V
Return
Supply
Horizontal
Side
P
S
Q
U
O
T
V
R
Horizontal Side
Supply
Return
3~15TON 20~30TON
OPQRV
U
S
T
Supply
Return
25, 30TON(Heat Pump)
DIMENSION
(mm) 3,4Ton 5Ton 8,10Ton 13,15Ton 20,25,30Ton 25Ton (Heat Pump)
30Ton
(Heat Pump)
O 73 73 203 208 1083 1219 1219
P 400 400 460 460 765 650 650
Q 260 260 275 360 525 525 525
R 75 75 122 120 92 90 90
S 300 300 443 443 660 800 1000
T 105 105 165 165 150 145 145
U 475 475 815 900 1130 1334 1842
V 104 104 175 170 150 145 145
Supply
Return
Bottom
F
E
Return
XW
Y
Supply
Bottom
N
KL M
JIH G
3~5TON 8~15TON

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K
J
LM
N
XW
Y
I
Bottom
Supply
Return
HG
FE
Y
E
FXW
Bottom
20~30TON 25, 30TON(Heat Pump)
DIMENSION
(mm) 3,4Ton 5Ton 8,10Ton 13,15Ton 20,25,30Ton 25Ton (Heat Pump)
30Ton(Heat
Pump)
E 400 400 443 443 1143 26 26
F 87 87 110 117 660 945 945
G 130 130 219 230 150 / /
H 300 300 430 430 765 / /
I 260 260 275 360 73 / /
J 82 82 98 127 525 / /
K 48 48 95 150 100 / /
L 475 475 815 900 290 / /
M 87 87 113 87 1500 / /
N 50 50 50 50 55 / /
W 312 312 215 152 1300 430 430
X 720 720 1570 1900 970 873 873
Y 1010 1010 1394 1564 2068 2068 2068
Z 16 16 14 14 14 14 14
Note: Above diagrams may be different from actual mode

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4.2 General Information
Nominal
Capacity Model Power Supply
Ton Refrigerant Model Name Function Climate Type V, Ph, Hz
3
R22 GK-C03NC1AD Cooling Only T1 220V,1Ph,60Hz
R22 GK-C03TC1AD Cooling Only T3 220V,1Ph,60Hz
R22 GK-C03TC1AK Cooling Only T3 220V,1Ph,50Hz
4
R22 GK-C04NC1AD Cooling Only T1 220V,1Ph,60Hz
R22 GK-C04TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C04TC1AM Cooling Only T3 380-415V,3Ph,50Hz
5
R22 GK-C05NC1AD Cooling Only T1 220V,1Ph,60Hz
R22 GK-C05NC1AF Cooling Only T1 220V,3Ph,60Hz
R22 GK-C05TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C05TC1AM Cooling Only T3 380-415V,3Ph,50Hz
R22 GK-H05TC1AM Heat Pump T3 380-415V,3Ph,50Hz
8
R22 GK-C08TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C08TC1AM Cooling Only T3 380-415V,3Ph,50Hz
R22 GK-H08TC1AM Heat Pump T3 380-415V,3Ph,50Hz
10
R22 GK-C10TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C10TC1AM Cooling Only T3 380-415V,3Ph,50Hz
R22 GK-H10TC1AM Heat Pump T3 380-415V,3Ph,50Hz
13 R22 GK-C13TC1AF Cooling Only T3 220V,3Ph,60Hz
15
R22 GK-C15TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C15TC1AM Cooling Only T3 380-415V,3Ph,50Hz
R22 GK-H15TC1AM Heat Pump T3 380-415V,3Ph,50Hz
20
R22 GK-C20TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C20TC1AM Cooling Only T3 380-415V,3Ph,50Hz
R22 GK-H20TC1AM Heat Pump T3 380-415V,3Ph,50Hz
25
R22 GK-C25TC1AF Cooling Only T3 220V,3Ph,60Hz
R22 GK-C25TC1AM Cooling Only T3 380-415V,3Ph,50Hz
R22 GK-H25TH1AM Heat Pump T3 380-415V,3Ph,50Hz
30 R22 GK-H30TH1AM Heat Pump T3 380-415V,3Ph,50Hz
R22 GK-C30TC1AM Cooling Only T3 380V,3Ph,50Hz
Note: 1Ton =12000Btu/h = 3.517kW
Electric heater is optional accessory. Following is accessory static pressure drop.
Electric Heater static pressure drop
20kW 40Pa
30kW 70Pa

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The external static pressure will be dropped, if electric heater is installed. Calculate external
static pressure as follows.
Total unit static pressure=Electric heater static pressure drop + External static pressure
4.3 Location
To ensure the unit in proper function, selection of installation location must be in accordance
with following principles.
(1) Unit shall be installed so that the air discharged by outdoor fan will not return and that
sufcient space for repair shall be provided around the unit.
(2) The installation site must have good ventilation, so that the unit can take in and exhaust
enough air.
(3) Place of installation shall be strong enough to support the weight of unit, and it shall be able
to insulate noise and prevent vibration. Ensure that the wind and noise from the unit will not
affect your neighbors.
(4) Avoid direct sunshine over the unit. It is better to set up a sun shield as the protection.
(5) Place of installation must be able to drain the rainwater and defrosting water.
(6) Place of installation must ensure the unit will not subject to the inuence of rubbish or oil
fog.
(7) The installation site must be at a place where the air exhaust outlet does not face strong
wind.
(8) Unit must be xed on stable and solid surface of oor.
4.4 Crane Way
(1) When removing the unit, two ropes are needed to hang the unit along the four ways.
(2) In order to avoid the extrusion, between the ropes should be add something to protect the
unit (e.g. batten).
(3) Please use M12 to tight the support fundus.

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4.5 Installation Positions and Clearances
SLAB ON GROUND
INSTALLATION
ROOF CURB
INSTALLATION
BOTTOM DUCT
ROOF CURB
INSTALLATION
REAR DUCT
MODEL-1:(TYPICAL SLAB ON GROUND INSTALLATION)
Supply Air Duct
Return AirDuct
Clearance C
Clearance B
Clearance D
Clearance A Clearance E
Electric Box
MODEL-2:(TYPICAL ROOF CURB INSTALLA)
Clearance J
Clearance G
Clearance H
Clearance I
Clearance F
Supply AirD uct
Return Air Duct
Note: Above diagrams may be different from actual model.

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3~5Ton Side Supply/Return Installation
Clearances
3~5Ton Bottom Supply/Return Installation
Clearances
DIMENSION
(Minimum) mm inch DIMENSION (Minimum) mm inch
A 600 24 F 350 14
B 860 34 G 860 34
C 860 34 H 860 34
D 1100 43 I 1100 43
E 1100 43 J 1100 43
MODEL-1:(TYPICAL SLAB ON GROUND INSTALLATION)
Clearance B
Clearance E
Clearance C
Clearance D
Clearance A
Supply AirDuct
Return Air Duct
Electric Box
MODEL-2:(TYPICAL ROOF CURB INSTALLATION)
Return Air Duct
Supply Air Duct
Clearance H
Clearance G
Clearance J
Clearance F
Clearance I
Note: Above diagrams may be different from actual model.

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8~15Ton Side Supply/Return Installation
Clearances
8~15Ton Bottom Supply/Return Installation
Clearances
DIMENSION
(Minimum) mm inch DIMENSION (Minimum) mm inch
A 600 24 F 350 14
B 860 34 G 860 34
C 1100 43 H 1100 43
D 1100 43 I 1100 43
E 1829 72 J 1829 72
MODEL-1:(TYPICAL SLAB ON GROUND INSTALLATION)
Supply AirDuct
Return Air Duct
Clearance A
Clearance E
Clearance D
Clearance C
Clearance B
Electric Box
MODEL-2:(TYPICAL ROOF CURB INSTALLATION)
Clearance H
Supply AirDuct
Return AirDuct
Clearance I
Clearance F
Clearance J
Clearance G
Note: Above diagrams may be different from actual model.

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20~30Ton Side Supply/Return Installation
Clearances
20~30Ton Bottom Supply/Return Installation
Clearances
DIMENSION
(Minimum) mm inch DIMENSION (Minimum) mm inch
A 860 34 F 1100 43
B 1100 43 G 1100 43
C 1100 43 H 860 34
D 1100 43 I 1100 43
E 1829 72 J 1829 72
4.6 Ductwork
(1) The Bottom duct openings are covered when they leave the factory ready to be used for a
side supply / side return application.
(2) If a bottom supply / bottom return application is desired, you simply remove the two covers
from the bottom of the unit and place them in the side supply / side return duct openings.
What is stated above is only applicable to the unit with the cooling capacity of 15 Ton or
lower. As for all other units, the side supply air outlet is factory defaulted. Meanwhile, the
button supply air outlet is reserved; however, the seal plate should be prepared by the user.
Cover for
Air Return
Cover for
Air Supply
Caution:
(1) The design and installation of air ducts must be in conformity with the relevant state
engineering criteria.
(2) Ductwork is to be constructed in a manner that limits restrictions and maintains suitable air
velocity.
(3) The air supply duct, the air intake duct must be covered with a layer of thermal insulation,
so as to avoid thermal leakage and condensation.
(4) The air supply ducts and the air intake ducts shall be xed to the prefabricated boards of the
ceiling by using iron supports. The joints of the ducts must be sealed by glue so as to avoid
leakage.
(5) The edge of the air intake duct must be at least 150mm away from the wall.

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(6) Silencing and shock absorption shall be considered in the design and installation of the
air ducts. Additionally, the noise source must be far away from where people stay. The air
intake shall not be located above the place where users stay (ofces and rest places, etc.).
(7) Do not terminate the air return duct in an area that can introduce toxic or objectionable
fumes/odors into the ductwork.
(8) Each installation must include a return air lter. This ltering may be performed at the unit or
externally such as a return air lter grille.
(9) Building condition and maintenance convenience should be taken into consideration when
selecting the installation method.
4.7 Installation of Condensate Pipe
After the unit is installed, it is required to check the level of the whole unit. The unit must be
placed horizontally to ensure the unit in proper function.
(1) When shipped out from factory, both the condensate outlets are blocked by rubber plug. So
before installation, please take the rubber plug out.
(2) Condensate removal is performed by attaching a PVC pipe to the drain pan and terminated
in accordance with local or state Plumbing/HVAC codes.
(3) The condensate pipe shall be installed with an inclining angel of 5~10°, so as to facilitate
the drainage of condensate.
(4) As the inside of the unit is in the negative pressure status, it is required to set up a
backwater elbow. The requirements is: A=B≥P/10+20(mm)
P is the absolute pressure inside the unit. The unit of the pressure is Pa.
(5) After the electrical installation is completed, carry out the testing of the drainage system.
Condensate Drainpipe Model(Ton) Drain Connection
Size(inch)
03 , 04 3/4"(NPT)
05 3/4"(NPT)
08 , 10 3/4"(NPT)
13 , 15 3/4"(NPT)
20 , 25,30 1" (G)
4.8 Adjust the Tightness of the Belt (Only above 5 Ton)
(1) The rotation of the fan is achieved by the transmission of the belt. The velocity and stability
of the fan is associated with the tightness of the belt and the tightness should be adjusted
after a period of time.
(2) For a new belt, the tightness should be adjusted for at least twice within 24 hours. After one
week running, the tightness of the belt should be adjusted again, we should routinely check
it every 1-2 months; also ensure the test results complying with the following table.
(3) The adjustment of the tightness of the belt is shown in the following gure. Loosen screws
xing motor on the base, move motor along the direction of arrow as shown in the picture,
and then x the screw again.
(4) The tightness level of belt is tested by tensiometer as shown in the following gure, when

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△reaches the deviation length, read the value on the meter, the value should be in the
category specied in the following table .
Section area
of the belt
Diameter of the
small
wheel(mm)
Diameter of
the big
wheel(mm)
The total
length of the
belt(mm)
Deviation
length(mm)
Tension(N)
Min. Max.
SPA
90 200 1582 8.93 18 26
106 190 1582 8.89 18 26
125 190 1632 9.07 18 26
132 180 1632 9.12 15 21
125 170 1632 9.33 18 26
150 170 1632 9.03 21 32
106 180 1432 7.82 18 26
112 180 1432 7.75 15 21
95 190 1432 7.80 18 26
106 190 1432 7.68 18 26
106 170 1432 7.95 18 26
125 170 1582 9.33 18 26
Nut 1
Nut 2
Setting lever
Tensiometer
Note: Above diagrams may be different from actual model.

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5.Electrical Installation
5.1 Electrical Date and Wire Sizing
Unit Model
Designation
Power Supply
(V, Ph, Hz)
Capability of Air
Switch(A)
Min. Sectional
Area of Earth
Wire(mm2)
Min. Sectional
Area of Power
Cord(mm2)
GK-C03NC1AD 220V,1Ph,60Hz 32 6 6
GK-C03TC1AD 220V,1Ph,60Hz 40 10 10
GK-C03TC1AK 220V,1Ph,50Hz 32 6 6
GK-C04NC1AD 220V,1Ph,60Hz 50 16 16
GK-C04TC1AF 220V,3Ph,60Hz 32 6 6
GK-C04TC1AM 380-415V,3Ph,50Hz 16 2.5 2.5
GK-C05NC1AD 220V,1Ph,60Hz 50 16 16
GK-C05NC1AF 220V,3Ph,60Hz 25 6 6
GK-C05TC1AF 220V,3Ph,60Hz 32 6 6
GK-C05TC1AM 380-415V,3Ph,50Hz 20 4 4
GK-H05TC1AM 380-415V,3Ph,50Hz 20 4 4
GK-C08TC1AF 220V,3Ph,60Hz 63 16 25
GK-C08TC1AM 380-415V,3Ph,50Hz 40 10 10
GK-H08TC1AM 380-415V,3Ph,50Hz 40 10 10
GK-C10TC1AF 220V,3Ph,60Hz 63 16 25
GK-C10TC1AM 380-415V,3Ph,50Hz 40 10 10
GK-C10TC1AM* 380-415V,3Ph,50Hz 100 25 50
GK-H10TC1AM 380-415V,3Ph,50Hz 40 10 10
GK-C13TC1AF 220V,3Ph,60Hz 100 25 50
GK-C15TC1AF 220V,3Ph,60Hz 100 25 50
GK-C15TC1AM 380-415V,3Ph,50Hz 63 16 25
GK-C15TC1AM* 380-415V,3Ph,50Hz 110 25 50
GK-H15TC1AM 380-415V,3Ph,50Hz 63 16 25
GK-C20TC1AF 220V,3Ph,60Hz 125 25 50
GK-C20TC1AM 380-415V,3Ph,50Hz 80 16 35
GK-C20TC1AM* 380-415V,3Ph,50Hz 120 25 50
GK-H20TC1AM 380-415V,3Ph,50Hz 80 16 35
GK-C25TC1AF 220V,3Ph,60Hz 160 50 95
GK-C25TC1AM 380-415V,3Ph,50Hz 100 25 50
GK-C25TC1AM* 380-415V,3Ph,50Hz 130 25 50
GK-H25TH1AM 380-415V,3Ph,50Hz 100 25 50
GK-H30TH1AM 380-415V,3Ph,50Hz 125 35 70
GK-C30TC1AM 380V,3Ph,50Hz 125 35 70
Note: *The unit with electric heat.

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5.2 Connect Wiring to the Terminals
Caution:
Please note the following items before installing the electric appliance.
(1) Check if the power supply accords with its value on the nameplate.
(2) The capacity of the power supply must be large enough.
(3) The circuit should be installed by the professional technician.
(4) In xed circuit, there must be electricity leakage protection switch of enough power capacity
and air switch with space between its electrode contacts ≥ 3mm.
(5) Single wire connection.
① Peel off the insulation for 25mm with pliers.
② Remove the screw from the terminal board.
③ Bend the peeled wire into circle with pliers.
④ Screw cross the circle and x it on the terminal board.
(6) Strand wires connection.
① Peel off the insulation for 10mm with pliers.
② Remove the screw from the terminal board.
③ Clamp a round terminal of the peeled wires.
④ Screw cross the circle and x it on the terminal board.
Round terminal
Strand wire
Solid wire
Insulation
10
25
Warning:
If the power line or the signal line is defective, use the special coil to replace it.
(1) Before connecting lines, read the voltages of the relevant parts on the nameplate. Then
carry out line connection according to the schematic diagram.
(2) The air-conditioning unit shall have special power supply line which shall be equipped with
electricity leakage switch and air switch, so as to deal with overload conditions.
(3) The air-conditioning unit must have grounding to avoid hazard owing to insulation failure.
(4) All fitting lines must use crimp terminals or single wire. If multiple twisted wires are
connected to terminal board, arc may arise.
(5) All line connections must conform to the schematic diagram of lines. Wrong connection may
cause abnormal operation or damage of the air-conditioning unit.
(6) Do not let any cable contact the refrigerant pipe, the compressor and moving parts such as
fan.
(7) Do not change the internal line connections inside the air-conditioning unit. The
manufacturer shall not be liable for any loss or abnormal operation arising from wrong line

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connections.
(8) If the supply cord is damaged, it must be replaced by the manufacturer or its service agent
or a similarly qualied person in order to avoid a hazard.
(9) All of the supplied components, material, and electric operation should be accorded with the
local principles.
5.3 Electrical Connections-supply Voltage
(1) Air-conditioning unit with single-phase power supply
① Remove the Electric Box Cover of the unit.
② Pass the cable though rubber ring.
③ Connect the power supply cable to the “L1, L2” terminals and the grounding screw.
④ Use cable fastener to bundle and x the cable.
(2) Air-conditioning unit with 3-phase power supply
① Remove the Electric Box Cover of the unit.
② Pass the cable though rubber ring.
③ Connect the power supply cable to terminals and the grounding screw according to wiring
diagram.
④ Use cable fastener to bundle and x the cable.
(3) Low Voltage Connections
Low voltage wiring is to be copper conductors. A minimum of 18AWG must be used for
installations up to 50’ and 16AWG for installations over 50’.
① Remove the Electric Box Cover of the unit.
② Pass the signal cable of the wire controller though rubber ring.
③ Connect the signal cable to terminals according to wiring diagram.
④ Use cable fastener to bundle and x the cable.
Caution:
Take great care when carrying out the following connections, so as to avoid malfunction of the
air-conditioning unit because of electromagnetic interference.
(1) The signal line of the wire controller must be separated from the power line.
(2) In case the unit is installed in a place vulnerable by electromagnetic interference, it is better
to use shielded cable or double-twisted cable as the signal line of the wire controller.