Trane CGAJ series Installation, Operation and Maintenance Manual

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 by Trane 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 local Trane 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

1 2 3 4 5 6 7 8 9

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

1 2 3 4 5 6 7 8 9 10 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,Ԉઔᄫ੦ևݴ.

ᆶۉླ၃!

injury or death.

servicing can cause severe personal

Failure to disconnect power before

BEFORE SERVICING.

INCLUDING REMOTE DISCONNECTS

DISCONNECT ALL ELECTRIC POWER

HAZARDOUS VOLTAGE !

য়!!!ߢ

WARNING



ޅૐૐǄඤǅ຤ఇ੷ऐፇ

ऐ ႙

ఁᅭ዆ૐଉ

KW KW

ఁᅭ዆ඤଉ

ຕ ଉ

უ໫ऐA

ܮۨۉୁ

A

܂ገۉୁ

A

ࠀ ୲

KW

A

უ໫ऐB

ۉ ᇸ: ۉუ

VHz

ೕ୲

၎ຕ

ሎႹट၌უ૰:

຤֨

MPaMPa

ૐ௃֨

ऐ ࡽ

ૐඐ຤ୁଉ

m3/h m3/h

ૐ۳຤ୁଉ

ૐ௃؊࠺ଉ

kg

dB(A)

ሯำ

kg

ऐፇዘଉ

༬ଳ੣ۙဣཥǄዐࡔǅᆶ၌ࠅິ

50

1426

2145

1987

຤ ৊຤

613

2038

1476

2020

1862

1521

2155

DN125

ޅૐૐǄඤǅ຤ఇ੷ऐፇ

ऐ ႙

ఁᅭ዆ૐଉ

KW KW

ఁᅭ዆ඤଉ

ຕ ଉ

უ໫ऐA

ܮۨۉୁ

A

܂ገۉୁ

A

ࠀ ୲

KW

A

უ໫ऐB

ۉ ᇸ: ۉუ

VHz

ೕ୲

၎ຕ

ሎႹट၌უ૰:

຤֨

MPaMPa

ૐ௃֨

ऐ ࡽ

ૐඐ຤ୁଉ

m3/hm3/h

ૐ۳຤ୁଉ

ૐ௃؊࠺ଉ

kg

dB(A)

ሯำ

kg

ऐፇዘଉ

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 2 2 4 2

2 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 Parameter Table for Modular Air-cooled Chiller (Heat Pump) Unit (H Type)

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 2 2 4 2

2 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. 74 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 local Trane 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 N Type 700 700 730 730 1320 1320

Weight of H Type 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

SERVICE

SPACE

≥1

.2M

≥1.2M

≥1

.2M

610

mm

য় ߢ

ටᇵฅྨ.

ሞྼႪമසࡕփൎ܏ۉᇸ,ࣷሰׯჹዘڦ

ሞྼႪമൎ܏໯ᆶڦۉᇸ,Ԉઔᄫ੦ևݴ.

ᆶۉླ၃!

injury or death.

servicing can cause severe personal

Failure to disconnect power before

BEFORE SERVICING.

INCLUDING REMOTE DISCONNECTS

DISCONNECT ALL ELECTRIC POWER

HAZARDOUS VOLTAGE !

WARNING

য় ߢ

ටᇵฅྨ.

ሞྼႪമසࡕփൎ܏ۉᇸ,ࣷሰׯჹዘڦ

ሞྼႪമൎ܏໯ᆶڦۉᇸ,Ԉઔᄫ੦ևݴ.

ᆶۉླ၃!

injury or death.

servicing can cause severe personal

Failure to disconnect power before

BEFORE SERVICING.

INCLUDING REMOTE DISCONNECTS

DISCONNECT ALL ELECTRIC POWER

HAZARDOUS VOLTAGE !

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- 18

210

20

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

(4)

(1)

2

3

1

2

4

5

7

6

(2)

6

5

8

9

Water inlet

Figure 1. Installation Drawing for Typical 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

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(N Type) or SW1-7(H Type) to “ON” on the control board and connect the interlocking point

(dry contact) between the control box terminals 12(N Type) or 19(H Type) 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

mm

2

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

CH

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

8 11

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

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

M

FAN

MOTOR 1-2

3 ~

220Vac

RFS

M

FAN

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

FAN

MOTOR 2-2

3 ~

M

FAN

MOTOR 2-1

3 ~

OVC2-1

OVC2-2

CCH2-2

CCH2-1

34

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

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

1

14

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 3N̚50Hz

N

U

M

FAN

MOTOR A-2

3 ~

(L2)

(L3)

(L1)

M

FAN

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

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

CH

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

8 11

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

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

M

FAN

MOTOR 1- 2

3 ~

220Vac

RFS

M

FAN

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

FAN

MOTOR 2-2

3 ~

M

FAN

MOTOR 2-1

3 ~

OVC2-1

OVC2-2

CCH2-2

CCH2-1

34

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

WH

W

NUV

1

2

3

4

1

2

3

4

1-1

1-22-2

2-1

ControlBox

20

Wiring Diagram

CX(G)AJ130 (H Type)

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