Trane CXAJ series Installation and operating instructions

Modular Air-Cooled Chiller (Heat Pump) Unit
CXAJ/CGAJ
Jan. 2016 PKGP-SVX06A-EN
Installation, Operation and
Maintenance
690134220001
Safety Warning
Only qualified personnel may install and maintain the unit.The installation, start-up and maintenance of heating,
ventilating and air-conditioning unit will be hazardous, and the operator shall have specific knowledge and training.
Improper installation, adjustment or change of the unit by an unqualified person will result in death or serious injury.
When operating the unit, pay attention to all precautions in the documents and the tags and labels attached to the
unit.

2
Table of Contents
General Information ………………………………………………………………………………… 3
Safety Precautions…………………………………………………………………………………… 4
Nomenclature ………………………………………………………………………………………… 5
Dimensions …………………………………………………………………………………………… 6
Performance Data …………………………………………………………………………………… 7
Unit Installation ……………………………………………………………………………………… 9
Electrical Installation……………………………………………………………………………… 15
Wiring Diagram …………………………………………………………………………………… 17
Pre-Start-up ………………………………………………………………………………………… 22
Unit Operation …………………………………………………………………………………… 29
Module Control System ………………………………………………………………………… 35
Building Control System ………………………………………………………………………… 48
Troubleshooting …………………………………………………………………………………… 50
Maintenance ……………………………………………………………………………………… 60

This manual is the customer property, which shall be used with the unit. Please put it back to the tecŠical information
bag after the completion of the work, and keep it properly.
Please read this manual carefully before installing the air conditioning unit, and install and maintain the unit according
to this manual to ensure the normal and reliable operation of the unit. Installation of the air conditioning unit must be
completed by the professional designated byTrane Company. If the installation or maintenance is done by unqualified
personnel or fails to comply with the requirements of this manual, the manufacturer shall not be held responsible.
This manual does not purport to cover the differences among various units or all problems that may be encountered
in the installation, and impossibly provides guidance for all possibilities in the installation. If you want to get more
information or face any special problem that is not explained in this manual, please contact your localTrane sales
office.
This manual contains a Checklist for Installer to Apply for Commissioning, and you may use the checklist to check
and confirm whether all necessary installation steps are completed. Reading the checklist does not mean reading the
contents of this manual, and you should read this manual carefully before the installation.
Dangers, Warnings and Cautions can be found in different parts throughout this manual. In order to ensure personal
safety and normal operation of the unit, please read these contents carefully and follow them.
Danger: Indicates a potentially hazardous situation which, if ignored, could result in death or serious
injury.
Warning: Indicates a potentially hazardous situation which, if ignored, could result in minor or moderate
injury. It could also be used to alert against unsafe practices.
Caution: Indicates a potential damage to the unit which, if ignored, could result in damage to the unit
or property losses, or possible environmental pollution. It is also be used to provide useful
information.The information might be beneficial to the operation of the unit or extension of the
service life of the unit. But it does not mean that the information is optimal or is directly related
to the improvement of unit operation.
Warning
Lock the power supply and cutoff switch of the air conditioning unit at the disconnected state before installation or
maintenance in order to avoid the personal death or injury caused by electrical shock or contact with moving parts.
All installation procedures of the air conditioning unit must comply with the national, provincial and local regulations.
Refrigerant Warning
Please do not use substandard refrigerants, refrigerant substitutes or refrigerant additives. Improper use method
or use of substandard refrigerants, refrigerant substitutes or refrigerant additives will cause damage to the air
conditioning unit and various safety risks. Please select acceptable refrigerants or call 8008208676 to purchase
acceptable refrigerants. All technical personnel using refrigerants must have the qualifications, be familiar with and
strictly follow the relevant technical requirements, laws and regulations for use, handling, recovery and recycling of
refrigerants.
3
General Information

In order to avoid electrical shock or fire, and other
injuries that may be caused, the following rules should
be kept in mind and strictly adhered to:
• The unit power supply and the electric heating power
supply must be equipped with an electric leakage
protection device, and must be connected to the
grounding wire; otherwise, injury or even death and
other accidents may occur if unprotected.
• The specification of the power wire shall meet the
requirements, otherwise there may be accidents
related to circuit safety.
• Please use a fuse appropriate for the current intensity.
• Do not use any temporary substitute, such as a piece
of wire, which not only may damage the unit itself,
but also may cause fire.
Ok!
Using a piece of wire
may cause fire.
• In order not to exceed the capacity of the power
meter and the protector, please do not simultaneously
switch on the electric heating for the air conditioner
and the electric heating for the water tank.The use of
all types of electrical appliances shall be coordinated.
• Please connect the wires in strict accordance with the
wiring diagrams in this manual. Improper wiring or
artificial change of wiring will result in unit failure and
damage, or endanger personal safety.
• The condensate water from the indoor and outdoor
units must be drained according to the requirements.
Improper drainage of the condensate water may lead
to adverse consequences.
• Never sit on the direct air duct at any time. Sitting on
the direct air duct is not conducive to your health and
safety.
• In order to prevent the relief valve failure due to
calcification, fouling and blockage, the user should
check the valve at least once every month. If the local
water quality is poor, the check interval should be
shortened appropriately. Please promptly replace
the relief valve with a new valve with reliable quality
if blockage, corrosion, manual operation failure or
damage to manual pressure relief handle is found.
• A heating device or other heat source shall not
be arranged under or near the air conditioner.The
machine body may be deformed by heating.
• Objects, such as sticks, sands or gravels, shall be
avoided from entering the air inlet grid or air outlet
grid. Fans running at high speed are very dangerous,
and children should be kept away from them.
• Never block or cover the air inlet grid or air outlet
grid. If such case happens, it may reduce the
performance and affect the normal operation
capacity.
• Whenever you operate the machine, make sure the
air filter net is installed correctly. Otherwise, dirt
may enter the internal running position and cause
damage.
• When cleaning the machine, do not sprinkle water
directly on the machine, which may lead to electric
shock.
• Before maintenance, make sure the unit is powered
off to prevent electric shock.
• When the unit is not used for a long period, you
should cut off the power supply and drain the water
from the water tank. After the water is drained, do
remember to close the drain valve. If the water tank
is under frozen conditions for a long time, it may be
damaged.
Safety Precautions
4

5
Nomenclature
Model: C X A J 0 6 5 5 B
123456789
Additional options: 1 H S D R A
10 11 12 13 14 15
Maintenance code: C X A J 0 6 5 5 B 1 H S D R A
12345678910 11 12 13 14 15
Digit 1 C= Chiller
Digit 2 X=Heat pump G=cooling only
Digit 3 A=air cooled
Digit 4 J= modular type
Digit 5,6,7 Model (cooling capacity)
045 (45kW) 065 (65kW) 130 (130kW)
Digit 8 Voltage/Hertz/Phase
5=380V/50Hz/3PH
Digit 9 Design Sequence
B
Digit 10 Fan speed
1=single speed
Digit 11 Energy efficiency( unit type)
N=standard efficiency H=High efficiency
Digit 12 Controller
S=modular controller (units ≥2) U=unit controller (unit =1)
N=None
Digit 13 Service Sequence
D=4th time
Digit 14 Ambient temperature
R=Standard
Digit 15 Connector option
C=Without 2 pcs. of DN125 rubber connector
D= With 2 pcs. of DN125 rubber connectors
Digit 16 BMS interface
M=Modbus module N= NONE
Digit 17 Refrigerant charged
A=without 045 065 130 B=with
Digit 18 Option
A=None
B=Special option
T=leaving water control (digit 11 = N)

6
2145
1987
຤ ৊຤
613
1521
927
727
2038
DN125
951
2155
ړ႐ةۉ
ටᇵฅྨ.
ሞྼႪമසࡕփൎ܏ۉᇸ,ࣷሰׯჹዘڦ
ሞྼႪമൎ܏໯ᆶڦۉᇸ,Ԉઔᄫևݴ.
ᆶۉླ၃!
injuryordeath.
servicingcancause severe personal
Failuretodisconnect power before
BEFORESERVICING.
INCLUDINGREMOTEDISCONNECTS
DISCONNECTALLELECTRIC POWER
HAZARDOUSVOLTAGE!
য়!!!ߢ
WARNING

ޅૐૐDŽඤDž຤ఇፇ
႙
ఁᅭ዆ૐଉ KW KW
ఁᅭ዆ඤଉ
ຕଉ
უ໫A
ܮۨۉୁ
A
܂ገۉୁ
A
ࠀ୲
KW
KW
A
A
უ໫B
ۉᇸ:ۉუ VHz
ೕ୲ ၎ຕ
ሎႹ၌უ૰:຤֨ MPaMPa
ૐ௃֨
ࡽ
ૐඐ຤ୁଉm3/h m3/h
ૐ۳຤ୁଉ
ૐ௃؊࠺ଉkg dB(A)
ሯำ kg
ፇዘଉ
༬ଳۙဣཥDŽዐࡔDžᆶ၌ࠅິ
50
1426
2145
1987
຤ ৊຤
613
2038 1476
2020
1862
1521
2155
DN125
ޅૐૐDŽඤDž຤ఇፇ
႙
ఁᅭ዆ૐଉKW KW
ఁᅭ዆ඤଉ
ຕଉ
უ໫A
ܮۨۉୁ
A
܂ገۉୁ
A
ࠀ୲
KW
KW
A
A
უ໫B
ۉᇸ:ۉუ VHz
ೕ୲ ၎ຕ
ሎႹ၌უ૰:຤֨ MPaMPa
ૐ௃֨
ࡽ
ૐඐ຤ୁଉm3/hm3/h
ૐ۳຤ୁଉ
ૐ௃؊࠺ଉkg dB(A)
ሯำ kg
ፇዘଉ
༬ଳۙဣཥDŽዐࡔDžᆶ၌ࠅິ
50
Dimensions
CXAJ045/065 (N/H type)
CXAJ130 (N/H type)

7
Performance Data
Performance data for Modular Air-cooled Chiller (Heat Pump) Unit (N Type)
Model CXAJ045 CXAJ065 CXAJ130 CGAJ045 CGAJ065 CGAJ130
Cooling
Nominal cooling capacity kW 45 65 130 45 65 130
Input power kW 14.2 20.4 40.8 14.2 20.4 40.8
Operating current A 33.0 41.4 82.8 33.0 41.4 82.8
Heating
Nominal heating capacity kW 47 67 132 - - -
Input power kW 15.0 20.2 40.4 - - -
Operating current A 33.4 41.4 82.8 - - -
Compressor
Type Hermetically sealed scroll compressor
Quantity 只22422 4
Nominal cooling power kW 6.1 9.2 9.2 6.1 9.2 9.2
Nominal cooling current A 13.8 18 18.0 13.8 18 18
Nominal heating power kW 6.5 9.1 9.1 - - -
Nominal heating current A 14 18 18.0 - - -
Refrigerant Type R410A
Charge kg 13 14.3 15*2 13 14.3 15*2
Water side
Type of heat exchanger High efficient shell and tube heat exchanger
Water flow CMH 7. 74 11.2 22.4 7. 7 4 11. 2 22.4
pressure loss kPa 40 40 68 40 40 68
Water pipe flange mm DN125 DN125 DN125 DN125 DN125 DN125
Air side
Type of heat exchanger High efficient fin type heat exchanger
Quantity of fans Piece 2 2 4 2 2 4
Rated power of fan kW 1.0 1.0 1.0 1.0 1.0 1.0
Rated current of fan A 2.7 2.7 2.7 2.7 2.7 2.7
Fan diameter mm 710.0 710.0 710.0 710.0 710.0 710.0
Fan speed RPM 710 710 920 710 710 920
Fan air volume CMH 12000 12000 12700 12000 12000 12700
Unit
Power supply V/PH/HZ 380/3N~/50
Noise dB(A) 68.5 69 69.6 68.5 69 69.6
Net weight kg 700 730 1320 700 730 1320
1. The refrigeration capacity is measured in the conditions of water inlet at 12℃, water outlet at 7℃and air inlet at the
ambient temperature of 35℃.
2. The heating capacity is measured in the conditions of water inlet at 40℃, water outlet at 45℃and air inlet at the
ambient dry bulb temperature of 7℃and the wet bulb temperature of 6℃.
3. CXAJ/CGAJ045 unit shall conform to the standard GB/T 18430.2-2008; CXAJ/CGAJ065/130 unit shall conform to the
standard GB/T 18430.1-2007.

8
TecŠical ParameterTable for Modular Air-cooled Chiller (Heat Pump) Unit (HType)
Model CXAJ045 CXAJ065 CXAJ130 CGAJ045 CGAJ065 CGAJ130
Cooling
Nominal cooling capacity kW 45 65 130 45 65 130
Input power kW 14.2 19.2 38.8 14.2 19.2 38.8
Operating current A 33.0 37.2 75.2 33.0 37.2 75.2
Heating
Nominal heating capacity kW 47 67 132 - - -
Input power kW 15.0 19.4 39.2 - - -
Operating current A 33.4 41.4 82.8 - - -
Compressor
Type Hermetically sealed scroll compressor
Quantity 只22422 4
Nominal cooling power kW 6.1 8.6 8.7 6.1 8.6 8.7
Nominal cooling current A 13.8 15.9 16.1 13.8 15.9 16.1
Nominal heating power kW 6.5 8.7 8.8 - - -
Nominal heating current A 14 16.1 16.3 - - -
Refrigerant Type R410A
Charge kg 13 15 16*2 13 15 16*2
Water side
Type of heat exchanger High efficient shell and tube heat exchanger
Water flow CMH 7. 74 11.2 22.4 7. 7 4 11. 2 22.4
pressure loss kPa 41 60 75 46 60 75
Water pipe flange mm DN125 DN125 DN125 DN125 DN125 DN125
Air side
Type of heat exchanger High efficient fin type heat exchanger
Quantity of fans Piece 2 2 4 2 2 4
Rated power of fan kW 1.0 1.0 1.0 1.0 1.0 1.0
Rated current of fan A 2.7 2.7 2.7 2.7 2.7 2.7
Fan diameter mm 710.0 710.0 710.0 710.0 710.0 710.0
Fan speed RPM 920 920 920 920 920 920
Fan air volume CMH 12000 12000 12700 12000 12000 12700
Unit
Power supply V/PH/HZ 380/3N~/50
Noise dB(A) 68.5 69 69.6 68.5 69 69.6
Net weight kg 730 780 1350 725 775 1340
1. The refrigeration capacity is measured in the conditions of water inlet at 12℃, water outlet at 7℃and air inlet at the
ambient temperature of 35℃.
2. The heating capacity is measured in the conditions of water inlet at 40℃, water outlet at 45℃and air inlet at the
ambient dry bulb temperature of 7℃and the wet bulb temperature of 6℃.
3. CXAJ/CGAJ045 unit shall conform to the standard GB/T 18430.2-2008; CXAJ/CGAJ065/130 unit shall conform to the
standard GB/T 18430.1-2007.
Performance Data

9
Unit Installation
Key Installation Points
Acceptance
When receiving the unit, please carefully check whether the unit is damaged in the transport. If
any, please record it in the delivery note and notify in written form within 72 hours. Notify the
final carrier of the petition in written form within 72 hours, and simultaneously inform the local
Trane sales office. Please thoroughly inspect the unit within 7 days after arrival of the goods. If
any damage is found, please immediately notify the carrier and the localTrane sales office.
Inspect whether the nameplate contents of the unit are correct and whether the operating power
supply is consistent with that on the nameplate of each component.The maximum deviation of
the supply voltage shall not be more than 10%.
Hoisting
Please use a forklift or crane with proper tonnage to handle this unit to its installation location.
Hoisting method:
Table of External Dimensions and Weight Parameters
Model CXAJ045 CGAJ045 CXAJ065 CGAJ065 CXAJ130 CGAJ130
External Dimensions (mm) 2145*1000*2155 2145*1000*2155 2145*2020*2155
Weight of NType 700 700 730 730 1320 1320
Weight of HType 730 725 780 775 1350 1340
Installation location
• The unit must be installed on a flat and level plane;
• It is better to install the shockproof rubber cushion, which is arranged between the host unit
and its load to absorb vibration;
• In the installation, the drainage, ventilation and maintenance space as well as others shall
be considered. Refer to the installation space diagram for the recommended minimum
maintenance space;
• It is necessary to consider the bearing capacity of the building in the installation to arrange
the unit base

10
Unit Installation
AIR OUT
AIR IN
AIR IN
AIR IN
SERVICE
SPACE
≥1
.2M
≥1.2M ≥1.2M
≥1
.2M
610 mm
য়ߢ
ටᇵฅྨ.
ሞྼႪമසࡕփൎ܏ۉᇸ,ࣷሰׯჹዘڦ
ሞྼႪമൎ܏໯ᆶڦۉᇸ,Ԉઔᄫևݴ.
ᆶۉླ၃!
injuryordeath.
servicingcancausesevere personal
Failuretodisconnectpower before
BEFORESERVICING.
INCLUDINGREMOTEDISCONNECTS
DISCONNECTALLELECTRICPOWER
HAZARDOUSVOLTAGE!
WARNING
য়ߢ
ටᇵฅྨ.
ሞྼႪമසࡕփൎ܏ۉᇸ,ࣷሰׯჹዘڦ
ሞྼႪമൎ܏໯ᆶڦۉᇸ,Ԉઔᄫևݴ.
ᆶۉླ၃!
injuryordeath.
servicingcancausesevere personal
Failuretodisconnectpower before
BEFORESERVICING.
INCLUDINGREMOTEDISCONNECTS
DISCONNECTALLELECTRICPOWER
HAZARDOUSVOLTAGE!
WARNING
Installation Space Diagram
PUMP
     
WA
TER OUTLET
WA
TER INLET
MODULAR
GROUP C
MODULAR
GROUP B
MODULAR
GROUP A ≥1.5M ≥1.5M
Multi-module Combination Diagram (Reverse Return Connection)
Note: each CXAJ/CGAJ045/065 multi-module combination includes 8 units at most, and each CXAJ/CGAJ130 multi-
module combination includes 4 units at most. Direct return connection is not allowed.

11
Unit Installation
Note: CXAJ/CGAJ045/065 single-module combination includes 8 reverse return connection units at most, and CXAJ/
CGAJ130 single-module combination includes 4 reverse return connection units at most.
Note: CXAJ/CGAJ045/065 single-module combination includes 4 direct return connection units at most, and CXAJ/
CGAJ130 single-module combination includes 2 direct return connection units at most.
Single-module Combination Diagram (Reverse Return Connection)
Single-module Combination Diagram (Direct Return Connection)


WA
TER
INLET
PUMP
WATER
OUTLET
WATER
INLET
PUMP
WATER
OUTLET

12
Unit Installation
Blind flange
The water pipe interface blind flange necessary for the installation of the end unit is show in the
diagram below:
8-Ф18
Ф210
20
Ф
245
Name: blind flange
Material: No.20
Specification: 5", PN1.6
Water pipeline
• Clean all chilled water pipelines.
• connect the evaporator pipeline.
• Exhaust the air in the chilled water system at the highest point of this system.
• Install the pressure gauge, the thermometer and the valve in the water inlet and outlet pipes.
• Install the filter in the water inlet pipe of the evaporator.
• Install the balance valve and the flow switch at the water outlet.
Cautions
• If the washing the pipe with acid solvent, a temporary by-pass pipe shall be arranged beside
the unit for fear of damaging the evaporator.
• Never use the untreated or improperly treated system water for fear of damaging the
machine.
• Refer to Connection Diagram for Water System for the installation location of each typical
accessory on the water supply pipeline of the unit.The pipe components may vary with the
locations of connectors and water source.
• To avoid damaging the unit, do not reversely install the system water pipe.The water inlet
pipe must be connected to the water inlet connector marked with “water inlet”.The water
outlet pipe must be connected to the water outlet connector marked with “water outlet”.
• The exhaust valve shall be arranged at the highest point of the pipeline in order to exhaust
the air in the chilled water system.
• The water pressure of the evaporator shall not be more than 0.5 MPa (i.e. maximum working
pressure) for fear of damaging the parts and components on the chilled water side of the
unit.
• Before the final pipe connection of the unit, all external water supply piping systems shall
be thoroughly flushed. It is strictly prohibited to be mixed with sundry in the piping system,
otherwise our company will not be responsible for the consequences.
Connection of water pipeline
The circulating water pump must be installed on the water inlet pipe of the evaporator to ensure
that the internal pressure of the evaporator is positive pressure. Refer to Figure 1 for the installation

13
Unit Installation
locations of all fittings on the water supply pipeline.
ķ: Pressure gauge ĸ: Shockproof hose Ĺ: Thermometer ĺ: exhaust valve
Ļ: Tree-way valve ļ: Shutoff valve Ľ: Filter ľ: Drain valve Ŀ
: Balance valve
1
Water outlet
(3)
Unit
Unit
(4)
(1)
2
3
3
1
2
4
5
7
6
6(2)
6
6
5
8
9
Water inlet
Figure 1. Installation Drawing forTypical Pipeline Fittings
The description of Figure 1 is as follows:
Pressure gauge: displaying the water inlet and outlet pressure.
Thermometer: displaying the water inlet and outlet temperature.
Balance valve: controlling the water flow.
Shutoff valve: used for disconnecting the host unit and the water pump when maintaining.The
shutoff valves are required to be installed on the water inlet and outlet pipes.
Filter: preventing the evaporator from being contaminated and blocked.
Drain valve: draining the residual water in the pipeline when the machine is shut down.
Tree-way valve: used when the evaporator is cleaned.
Cautions
• All units must be equipped with the filters which can filter the particles with the diameter larger
than 1 mm to ensure that the impurities cannot enter the evaporator.
• Never use the untreated or improperly treated system water for fear of damaging the unit.
Otherwise,TRANE will not be responsible for the unit damage therefrom.
• After the installation of water pipeline is completed, please firstly close the shutoff valves 2 and 3,
open the shutoff valves 1 and 4, the open the water pump, and flush the debris in the water pipe
residual in the water pipe with water onto the filter; then close the shutoff valves 1 and 4, remove
the filter and cleanup the dirt on the filter, and reinstall the filter. Repeat the above operation till
there is no dirt on the filter.Therefore, the evaporator can be prevented from being blocked.
• The chiller water pipe must be insulted to prevent condensation. If the pipeline may be exposed
below 0 ℃, the pipeline must be equipped with the heating resistor.
• When the ambient temperature is below 16℃in winter, do not cut off the power supply, and
preheat the unit 24 hours ahead of start-up, otherwise the compressor will be damaged.

14
Unit Installation
System Connection Diagram
Direct Return
Connection
Disdirect Return
Connection
Expansion tank
Feed-water
Drain valve
Overflow
Tree-way valve
FCUFCU
FCUFCU
Exhaust valve
Drain valve
Pump Filter
Shockproof hose
Electric heater
Flow switch
Drain valve
Thermometer
Pressure gauge
Shutoff valve
Backup other pump is recommended
Principle Description
1. In order to avoid pipe rupture caused by the excessive pressure inside the system pipeline
when the ambient temperature changes and prevent the pneumatic hammer from occurring
in the pipeline, a pressure water tank is added on the pipe system.
2. To avoid the internal pressure is too high or low inside the pipeline, a water compensation
valve and a drain valve are added. When the pressure is lower than 0.6 bar, the water
compensation valve will be automatically opened for water compensation; when the pressure
is higher than 5 bars, the drain valve will automatically open the drain pipe for drainage.
3. The water compensation pressure can be adjusted according to actual conditions.

15
Electrical Installation
Electrical Wiring
• Connect the power wire to the main terminal board (TB) of the distribution box for the unit.
• Connect the control panel with the main control board of the unit through the control panel
(indoor mounted) connecting cable. See pages 18-24.
• If the unit is not provided with the water pump, connect the control wire of the chilled water
pump to the corresponding terminal of the chilled water pump.
• Ground the unit, the chilled water pump motor (for the unit with water pump) and all devices
to be grounded.
• If the electric heater is provided, connect the power wire and the control wire to the terminal
TB2 of the electric heater.
• If the two-way valve of the fan coil is used for interlocking control, it is necessary to set SW2-
7(NType) or SW1-7(HType) to “ON”on the control board and connect the interlocking point
(dry contact) between the control box terminals 12(NType) or 19(HType) and U.
• Connect the flow switch between the control box connecting terminals U and 15 of the unit.
Warning
• To prevent injury or death, disconnect electrical power supply before completing wiring
connections to the unit.
Caution
• The terminals can be connected only through the copper conductors so as to avoid corrosion
or overheating. Refer to the electrical parameter table for the minimum current, the fuse
specifications and the electrical specifications of the motor.
Power Supply
Please refer to the wiring diagram on the cover plate of the control box for the unit.The installer
shall provide a power supply with correct voltage and a suitable breaker for the unit.The
variation of input power should be limited at ±10%.
Cautions
For the 380V~ unit adopts the scroll compressor, the phase reversing and loss protection
controller is installed which should be checked with electricity connection before start-up.
If the green light of the phase reversing and loss protection controller in the control box is on, it
means the phase sequence is right; red light being on means the phases of power wiring should
be exchanged; and the yellow light means lacking phase which need check with electricity
disconnection.
In any case that the phases are reversed or lacked, the unit will shut down its operation and
start-up automatically.

16
Electrical Data
Model
Power
Supply
(V/Hz/ph)
Full-
load
current
of water
pump
FLA
Rated
current
of No.1
compressor
RLA
Rated
current
of No.2
compressor
RLA
Rated
current
of No.3
compressor
RLA
Rated
current
of No.4
compressor
RLA
Rated
current
of No.1
fan
FLA
Rated
current
of No.2
fan
FLA
Rated
current
of No.3
fan
FLA
Rated
current
of No.4
fan
FLA
Minimum
circuit
current of
unit
MCA
Recommended
fuse
specification
REC
Maximum
specification
of fuse
MFS
Minimum
specification
of copper
core wire
diameter for
power wire
mm2
CX(G)AJ0455 380/50/3 18.6 18.6 2.1 2.1 46.05 50.70 64.65 16
CX(G)AJ0655 380/50/3 20.8 20.8 2.1 2.1 51.00 56.20 71.80 16
CX(G)AJ1305 380/50/3 20.8 20.8 20.8 20.8 2.1 2.1 2.1 2.1 92.60 97.80 113.40 35
Electrical Installation

17
Wiring Diagram
The following wiring diagrams are for reference only.The accompanied wiring diagrams shall prevail.
B
A
C
(11)
(14)
BA
+12VGND
CN1
ABG
Chiller's Water Pump Contactor
Fan Motor Contactor
Compressor Start Contactor
Description
Name Description
Name Description
Name
Compressor
Crankcase Heater
Plate Heat Exchanger Heater
Water Circuit Based
Electrical Heating Control
Water Pump
Alarm Output/Input
Fan Motor
Common Neutral Line
Energy Saving/
2- Way Valve Interlock
Run Output/Input
Outer Cool/Heat Pump Setting
Compressor Overload/Overheat
Fan Motor Overheat
Water Pump Overload
Flow Switch
High Pressure Switch
Low Pressure Switch
Terminal Board
Phase Sequence Controller
4 Way Valve
Field Wiring
Factory Wiring
Water flow switch need connect between 15 and U
DIP setting (sw1,sw2) according to IOM
MC1-1
312 710
U
N
3
N
RUN
MP
N
MF1
FLOW
LP1
OV-COMP2
OV-COMP1
HP1
OV-FAN
OV-PUMP
LP2
HP2
N-COM
C／H
COMP2
M/FAN2
H/FAN1
A-HAT
4WV2
HE/EV1
4WV1
PUMP
COMP1
RUN_OUT
RUN_IN
AL_OUT
AL_IN
EN-SAVE
CON1
CON2
MF1
811
AL
N
TH2
TH1 TH3 TH4 TH5 TH6
690134120001
C/H
RUN-OUT/IN
EN-SAVE
N-COM
AL-OUT/IN
H/FAN
PUMP
A-HAT
HT/EV1
COMP
CCH
MF
MC
4WV
TB
HP
LP
OVP
OVF
MP
FS
OVC
MF2
MF2
MC1-2
MC2-1
MC2-2
15 16
Wiring Diagram
(connected network and module mode)
RFS
Reserved control signal for controlling water pump and heating
Pump Overload Switch(close) Connect 16 and U
Note:
Compressor Location
ADC_OD_C01
power
Water Inlet Sensor
Water Outlet Sensor
Control panel
(Option)
TO CONTROL WIRING
CCH1-2
CCH1-1 32
31
MC1-2 MC1-1
MC1-2
COMP 1-2
3 ~
M
(L2) (L3)
MC1-1
COMP 1-1
3 ~
M
TB1
380Vac 3N~50Hz
N
U
MFAN
MOTOR 1-2
3 ~
220Vac
RFS
MFAN
MOTOR 1-1
3 ~
OVC1- 1
OVC1- 2
CGAJ1305 (N Type)
(L2) (L3)
MC2-2
(L1)
COMP 2-2
3 ~
M
(L1)
(L2) (L3)
MC2-1
COMP 2-1
3 ~
M
MFAN
MOTOR 2-2
3 ~
MFAN
MOTOR 2-1
3 ~
OVC2-1
OVC2-2
CCH2-2
CCH2-134
33
MC2-2 MC2-1
N
U
(L1)
BK YL
BK YL
(L2)
(L3)
(L1)
(L2)
(L3)
(L1)
(L2)
(L3)
(L1)
(L2)
(L3)
(L1)
(L2) (L3)
(L1)
(Two Compressors)
Microprocessor Control Board
Transformer
BK YL
BK YL
L
N
SW2
SW1
CN4
FS
HP2
LP1
OVC1- 1
LP2
HP1
OVC2-1
OVC1- 2
OVC2-2
Mian Controller
connect with other units(correspond)
CN6
RFS
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
W
BK
R
W
BK
R
WH
BK
RD
WH
BK
RD
WH
BK
RD
W
BK
R
RD
WH
W
NUV
1
1
1 2
3 4
1 2
3 4
1-1 1-2 2-2
2-1
ControlBox

18
Wiring Diagram
BA
+12VGND
CN1
ABG
B
A
C
Energy Saving/
2- Way Valve Interlock
Outer Cool/Heat Pump Setting
Compressor Overload/Overheat
Flow Switch
Water Pump Overload
Low Pressure Switch
High Pressure Switch
4 Way Valve
Chiller's Water Pump Contactor
Fan Motor Contactor
Compressor
Crankcase Heater
Compressor Start Contactor
Water Pump
Fan Motor
Water Circuit Based
Electrical Heating Control
Terminal Board
Alarm single
Description
Name Description
Name
Field Wiring
Factory Wiring
CN1
CN2
CN6
R
SW2
SW1
CN4
OVCA-1
OVCA-2
Mian Controller(Option)
connect with other units(correspond)
TH2
TH1 TH3 TH4
HEAT
FAN
PUMP
4WV
L
4MV
MF
OV-FAN
OV-PUMP
LP1
FLOW
OV-COMP
N-COM
EN-SAVE
OV-HEAT
N
EG-SAVE
RFS
COMP
MC1
AL_IN
AL_OUT
LP
FLOW
MP
HP1
OVP
Control panel
(Option)
C/H
MF
C/H EN-SAVE
AL
FAN
PUMP
HT/EV
COMP
CCH
MF
MC
4WV
TB
HP OVP
MP
FS OVC
Compressor Location
HP
HT/EV
MC2 AL
U
N
LP
Power
Water Inlet Sensor
Water Outlet Sensor
Defrost Sensor1
Defrost Sensor2
Pump Overload Switch(close) Connect 11 and U
Flow Switch Connect 10 and U.
Code Switch Seting reference IOM.
Reserved control signal for controlling water pump and heating
No valve and Deforst sensor at cooling only.
Note:
COMP
Transformer
RD
WH
N
35613
7
11
(11)
(14)
L
114
10
4
8
TO CONTROL WIRING
CCH2
CCH1 32
31
MC2 MC1
(L2) (L3)
MC2
(L1) COMP A-2
3 ~
M
(L2) (L3)
MC1
COMP A-1
3 ~
M
TB
380Vac 3N50Hz
N
U
MFAN
MOTOR A-2
3 ~
(L2)
(L3)
(L1) MFAN
MOTOR A-1
3 ~
(L2)
OVC1
OVC2
(L1)
(L3)
(L1)
2
BK
YL
9
12
Control Board
RFS
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
W
NUV
1 2
3 4 5
1
2
3
5
5
A-1 A-2
Control Box
CX(G)AJ 045/065 (N Type)
Wiring Diagram
690128970002
SW2˖5ǃ6˖00 Heatpumpˈ11 Refrigeration
7˖0 Normalˈ1 2-Way Valve Interlock 8˖0 Singleˈ1 Modul
220V

19
Wiring Diagram
B
A
C
(11)
(14)
BA
+12VGND
CN1
ABG
Water flow switch need connect between 15 and U
DIP setting (sw1,sw2) according to IOM
Chiller's Water Pump Contactor
Fan Motor Contactor
Compressor Start Contactor
Description
Name Description
Name Description
Name
Compressor
Crankcase Heater
Plate Heat Exchanger Heater
Water Circuit Based
Electrical Heating Control
Water Pump
Alarm Output/Input
Fan Motor
Common Neutral Line
Energy Saving/
2- Way Valve Interlock
Run Output/Input
Outer Cool/Heat Pump Setting
Compressor Overload/Overheat
Fan Motor Overheat
Water Pump Overload
Flow Switch
High Pressure Switch
Low Pressure Switch
Terminal Board
Phase Sequence Controller
4 Way Valve
Field Wiring
Factory Wiring
MC1-1
312 71045
U
N
3
15
N
RUN
MP
N
MF1
FLOW
LP1
OV-COMP2
OV-COMP1
HP1
OV-FAN
OV-PUMP
LP2
HP2
N-COM
C／H
COMP2
M/FAN2
H/FAN1
A-HAT
4WV2
HE/EV1
4WV1
PUMP
COMP1
RUN_OUT
RUN_IN
AL_OUT
AL_IN
EN-SAVE
CON1
CON2
ADC_OD_C01
MF1
811
AL
N
TH2
TH1 TH3 TH4 TH5 TH6
690134120003
C/H
RUN-OUT/IN
EN-SAVE
N-COM
AL-OUT/IN
H/FAN
PUMP
A-HAT
HT/EV1
COMP
CCH
MF
MC
4WV
TB
HP
LP
OVP
OVF
MP
FS
OVC
MF2
MF2
MC1-2
MC2-1
MC2-2
4WV1
4WV2
16
Wiring Diagram
(connected network and module mode)
Compressor Location
Reserved control signal for controlling water pump and heating
Pump Overload Switch(close) Connect 16 and U
Note:
RFS
power
Water Inlet Sensor
Water Outlet Sensor
Defrost SensorA-1
Defrost SensorB-1
Defrost SensorA-2
Defrost SensorB-2
Control panel
(Option)
TO CONTROL WIRING
CCH1-2
CCH1-1 32
31
MC1-2 MC1-1
(L2) (L3)
MC1-2
(L1)
COMP 1-2
3 ~
M
(L2) (L3)
MC1-1
COMP 1-1
3 ~
M
TB1
380Vac 3N~50Hz
N
U
MFAN
MOTOR 1- 2
3 ~
220Vac
RFS
MFAN
MOTOR 1- 1
3 ~
(L2)
(L3)
(L1)
OVC1- 1
OVC1- 2
CXAJ1305 (N Ty pe)
(L2) (L3)
MC2-2
(L1)
COMP 2-2
3 ~
M
(L1)
(L2) (L3)
MC2-1
COMP 2-1
3 ~
M
MFAN
MOTOR 2-2
3 ~
MFAN
MOTOR 2-1
3 ~
OVC2-1
OVC2-2
CCH2-2
CCH2-134
33
MC2-2 MC2-1
N
U
(L1)
(L2)
(L3)
(L1)
(L2)
(L3)
(L1)
(L2)
(L3)
(L1)
(Two Compressors)
Microprocessor Control Board
Transformer
BK YL
BK YL
BK YL
BK YL
FS
HP2
LP1
L
N
SW2
SW1
OVC1-1
LP2
HP1
OVC2-1
CN4
OVC1-2
OVC2-2
Mian Controller
connect with other units(correspond)
CN6
RFS
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
WH
BK
RD
RD
WH
W
NUV
1
1
1 2
3 4
1 2
3 4
1-1 1-22-2
2-1
ControlBox

20
Wiring Diagram
Wiring Diagram CX(G)AJ130 (HType)