Trane CXAU Installation and operating instructions

SAFTY WARNING
Only qualified personal should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed,adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
Mayo 2023 PKGP-SVX19A-EN
Confidential and proprietary Trane information
Installation, Operation and Maintenance
CXAU Air-Cooled Modular Chiller /
Heat Pump
R410A
CXAU065/130
690914770002

2PKGP-SVX19A-EN
Preface
Read this manual thoroughly and fully understand all functions of the unit before operating or servicing this unit. Your personal
safety and the proper operation of this machine depend upon the strict observance of these precautions.
Please strictly follow the content of this manual together with unit and other relevant materials at installation and operation.
The “Installation Completion Check Sheet” in the manual will be used to check that all required installation steps are
completed. Do not read “Log and Check Sheets” only instead of reading the IOM manual thoroughly. The IOM manual should
be read carefully before unit installation.
This manual may not fully cover all situations encountered in the installation of this air conditioning units, please contact your
local Trane sales o󰀩ce if you need more detailed information or encounter a specic question from a customer that is not
described in detail in this manual. The contents of the manual are subject to change without notication.
All the installation processes of the air conditioner unit must be completed by professionals complying with national and
local regulations. In this manual, “
!
WARNING” and “
!
CAUTION” marks are given where appropriate, and it is extremely
important to read them carefully and strictly follow them to ensure personal safety and proper operation of the unit.

Preface
3PKGP-SVX19A-EN
Modular Air-Cooled Chiller (Heat Pump) Installation Completion
Check Sheet for Application of Trane Service
Installation Company:
Installation Company Address:
Owner Name/Company:
Contact: Telephone:
Unit Installation Address:
Unit Model:
IDU Barcode:
ODU Barcode:
Dealer: Contact:
Telephone : Fax:
Installation Company : Contact:
Telephone : Fax:
Check List
Please read the installation manual and relevant installation specications before installation
1. Conrmation of the installation
a) Ventilation of the outdoor unit meets the distance requirements in the manual Yes ( ) No ( )
b) Installation meets platform requirements and isolation pads installed for outdoor unit Yes ( ) No ( )
c) Isolation pads installed for indoor unit Yes ( ) No ( )
d) Enough service clearance around the unit Yes ( ) No ( )
e) Not installed in abnormal acidity or alkaline places such as seaside (except for relevant customized
units)
Yes ( ) No ( )
2. Conrmation of the installation of the unit’s electrical system
a) Air switch capacity and power cable diameter meet the requirements of the unit Yes ( ) No ( )
b) Wiring is correct and terminal blocks are pressed tightly without false connections Yes ( ) No ( )
c) Connection of the neutral wire to the ground wire complies with the relevant electrical specications Yes ( ) No ( )
d) Wiring connection between the control line and the power line meets the anti-interference requirements Yes ( ) No ( )
e) ”ON-OFF” warning label is a󰀩xed to the air switch box of the power supply Yes ( ) No ( )
f) Terminal of external water pump overload protection is connected to the pump overload protection
terminal of the host water pump
Yes ( ) No ( )
3. Conrmation of the installation of the chilled water system Yes ( ) No ( )
a) Prohibited to used in direct heating systems application (external continuous water replenishment) Yes ( ) No ( )
b) Designed by professional engineers (e.g. water pipe diameter calculation, etc.) Yes ( ) No ( )
c) The actual chilled water system resistance matches the pump head, and the water ow of the unit
reaches the rated value
Yes ( ) No ( )

Preface
PKGP-SVX19A-EN4
Modular Air-Cooled Chiller (Heat Pump) Installation Completion
Check Sheet for Application of Trane Service
d) The unit-equipped water lter is installed at the water entering of the unit with correct installation
method
Yes ( ) No ( )
e) Equipped with an entering and leaving pressure gauge and a shockproof hose Yes ( ) No ( )
f) Setting for water system make-up valve and exhaust are reasonable Yes ( ) No ( )
g) Equipped with gravity expansion tanks or pressure expansion tanks Yes ( ) No ( )
h) Meet the requirements of the system water capacity by adding an energy storage tank Yes ( ) No ( )
i) The hydroelectric heater installation meets the requirements in this manual Yes ( ) No ( )
j) The chilled water system is cleaned and discharged from the unit Yes ( ) No ( )
k) The chilled water system installed with an automatic exhaust valve and the air is completely dischared Yes ( ) No ( )
l) The chilled water system has been tested by water pressure and ensure that the system does not leak Yes ( ) No ( )
m) Antifreeze protection measures after installing the water system in winter Yes ( ) No ( )
n) Closed-looped water system application only, and NO open water system Yes ( ) No ( )
o) The water ow switch of the unit (except for the unit without ow switch) is closed, or the
temperature di󰀨erence between the entering and leaving water meets the requirements for unit
without water ow switch
Yes ( ) No ( )
4. Conrmation of the installation of the indoor fan-coil system
a) The entering and leaving water valves/2-way valves/3-way valves of the fan coil are designed and
installed correctly and intact
Yes ( ) No ( )
b) Pour water into the condensate tray, the condensate discharge is smooth and there is any leakage Yes ( ) No ( )
c) The condensate pipe insulation is tightly bandaged to prevent condensation on the outer wall Yes ( ) No ( )
5. Conrmation of pre-commissioning preparations
a) The power supply voltage is within the normal range and the three-phase imbalance is less than 2% Yes ( ) No ( )
b) The power supply should not be temporary power supply Yes ( ) No ( )
c) The customer and Party A’s acceptance personnel can be in place in time Yes ( ) No ( )
d) Enough facilities (ladders, lifting tables, etc.) to ensure the normal operation of the operator Yes ( ) No ( )
e) The unit has been powered on for 24 hours before start-up and commissioning Yes ( ) No ( )
6. Other Information
Require Comissioning Date: Before
The company applying for commissioning (stamp)
Signature: Date:

5PKGP-SVX19A-EN
Contents
Preface..............................................................................................................................................................2
Unit Model Number .....................................................................................................................................8
Unit Dimension ............................................................................................................................................9
Operation Map........................................................................................................................................... 10
Installation - Mechanical............................................................................................................................... 11
Pre-Installation Inspection ......................................................................................................................... 11
Lifting and Moving Instructions.................................................................................................................. 11
Mounting Locations ...................................................................................................................................12
Water System Installation..........................................................................................................................15
Circulating water treatment requirements .................................................................................................20
Water ow and pressure drop ................................................................................................................... 22
Installation - Electrical .................................................................................................................................. 23
General Recommendations....................................................................................................................... 23
Power Supply Wiring .................................................................................................................................23
Unit Power Connection Diagram ...............................................................................................................24
Field Wiring Instructions ............................................................................................................................24
Field Wiring Example ................................................................................................................................26
Pre-Start .........................................................................................................................................................27
Controller .......................................................................................................................................................29
Application and Dimension........................................................................................................................ 29
Installation Guide....................................................................................................................................... 29
Centralized Controller with Touch Screen .................................................................................................31
User Operation Guide ...............................................................................................................................33
Alarms and Troubleshooting......................................................................................................................41
Unit Operation................................................................................................................................................42
Start Up Procedures.................................................................................................................................. 42
Long-term Shutdown .................................................................................................................................42
Start the System after Long-time Shutdown.............................................................................................. 42
System Protection .....................................................................................................................................42
Alarm Troubleshooting .................................................................................................................................45
Maintenance...................................................................................................................................................47

6PKGP-SVX19A-EN
Introduction
Read this manual thoroughly before operating or servicing this unit.
Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.
ATTENTION: Warnings, Cautions and Notices appear at appropriate sections throughout this literature. Read these carefully:
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury.
It could also be used to alert against unsafe practices.
Indicates a situation that could result in equipment or property-damage only accidents.
`
!
WARNING
`
!
CAUTION
NOTICE
`
!
WARNING
●All the installation procedures of the units must comply with national and local regulations.
●Please contact the local sales when installation. The unit should be installed by professional technicians with
qualied certicate. Customers do not install, repair or change installation position of the air conditioner by
themselves. Otherwise, it may cause water leakage, electric shock or re damage.
●Before installation or maintenance, lock the power supply and cut-o󰀨 switch of the unit to avoid personal injury
or death caused by electric shock or contact with moving parts.
●Please install a separate power supply. The voltage uctuation of power supply cannot exceed ±10% of the rated
voltage, and the power supply cables must be separated from the welding transformer, which will cause large
voltage uctuations.
●The installation should be carried out by professional electrician with qualied certicate and in accordance with
the national power standards and the regulations of the local power department. Electrician also need to check
whether the line capacity meets the requirements, and whether the power supply cable is loose or damaged.
●The cover plate of the electric control box must be installed tightly to prevent dust, water, etc. from entering. The
electrical parts must be moisture-proof and enough far away from water sources. Otherwise, it will cause electric
shock, re and other accidents.
●Make sure to install fuse with suitable current intensity. Never use temporary substitutes, such as a stretch of
electrical wire. This may not only damage the unit itself, but also lead to re damage.
●The power supply of the unit and the auxiliary electrical heater must be equipped with electricity leakage
protection devices, and the ground wire must be connected. Otherwise, there may be injuries and even
casualties without protection.
●All auxiliary electric heater should be connected according to the wiring diagram, and direct energization of
auxiliary electric heater will cause the unit loss part of control functions, even damage the unit.
●Please strictly follow the wiring diagram in this manual, incorrect wiring or arbitrarily change the wiring will
cause unit failure, damage of unit or even person.
●All power supply must be cut o󰀨 before contacting wiring equipment or parts.
●Please conrm that the unit is in a power-o󰀨 state before servicing.
●Maintenance should only be carried out by professional maintenance personnel. If maintenance and repair are
required, please contact Trane Sales. Improper maintenance and repair may result in water leakage, electric
shock or re.
●Do not use ammable materials near this product. Do not use organic solvents, such as paint diluent to clean
this product.
●Don’t use organic solvents to avoid cracks, electric shock or re.

Introduction
7PKGP-SVX19A-EN
`
!
WARNING
●Optional parts mush be installed by professionals. Be sure to use the optional parts provided by TRANE.
Improper installation can lead to water leakage, electric shock and re.
●Please do not charge unqualied refrigerants, refrigerant substitutes or refrigerant additives. Incorrect charge
methods or charge of unqualied refrigerants, refrigerant substitutes or refrigerant additives will cause unit
damage and safety hazards. Please select qualied refrigerants. All technicians charging refrigerants must
be qualied and must be familiar with and strictly comply with the relevant technical requirements, laws and
regulations regarding the use, treatment, recovery and recycling of refrigerants
●Smoking and re are strictly prohibited when refrigerant leaks. If the unit does not produce cool or heat properly,
there may be refrigerant leakage and please contact TRANE after-sales
●The refrigerant used in the unit is safe and usually the leaks possibility is very low. If the refrigerant leaks into
indoors, and the refrigerant gets contact with pyrotechnics of heaters, electric stoves, and heaters, toxic gases
will be generated. Please make sure to extinguish the re of burning appliances or other appliances that may
cause re, ventilate the room and contact Trane after-sales.
●Please conrm that the leakage repair is actually completed before running the unit.
●Do not turn on the unit when the panel or protective net is removed. Rotating parts in the unit may cause injure
of human body or other objects.
●Avoid objects such as sticks, sands, or stones to enter the inlet or outlet of grilles. The fan rotating at high
speed is very dangerous.
●The strength of ordinary unit bracket may not be suitable for this product, please choose suitable bracket
according to the design weight. Using of brackets with insu󰀩cient supporting strength may bring hidden
dangers or even cause safety accidents.
●In winter, when the unit was stopped for a short time, make sure to keep the unit powered on to protect the unit
free of frozen. Otherwise, the unit may freeze out.
●Make sure the unit is powered on at least for 24 hours before the unit is start up at the rst time or re-energized
after long time power o󰀨. Otherwise, it may cause the compressor to burn.
●In the season when the unit will not run for a long time, please drain the water and cut o󰀨 the power supply to
save electric energy and extend service life.
`
!
CAUTION
●Do not touch the ns of the heat exchanger. It may damage the ns, cause machine performance degradation or
scratch ngers.
●After installation, air leakage for the pipeline needs to be tested to make sure there’s no leak for the pipeline.
●During running or short period after unit stops, do not touch refrigerant pipes. The pipes can be too hot or too
cold to cause burns or cold injury.
●Do not block or cover the inlet or outlet of grilles. The blockage will result in degraded performance or impact
unit operation.
●There should be a defrost drainage port to ensure the smooth drainage.
●It is recommended to install an outdoor snow shelter to ensure that the unit can run well on snowy days

Introduction
8 PKGP-SVX19A-EN
Unit Model Number
C X A U 1 3 05 B V S A E N N N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Digit 1 C = Chiller
Digit 2 X = Heat Pump
Digit 3 A = Air-source
Digit 4 U = Modular
Digit 5,6,7 Nominal Cooling Capacity/Heating Capacity
065 = 65 kW
130 = 130 kW
Digit 8 Unit Voltage
5 = 380V/50Hz/3Ph
6 = 380V/60Hz/3Ph
7 = 460V/60Hz/3Ph
Digit 9 Refrigerant
B = R410A
Digit 10 Application
V = VFD unit
Digit 11 E󰀩ciency
S = Super-e󰀩ciency
Digit 12 Design Sequence
A = Factory Assigned
Digit 13 Interface
N = Chinese
E = English
Digit 14 Option
N = None
Digit 15 Controller
N = Without controller
1 = With Controller, 380V
2 = With Controller, 460V
Digit 16 Option (reserved)
N = None

Introduction
9PKGP-SVX19A-EN
Unit Dimension
CXAU065-VS
CXAU130-VS
828
34
145
750 750
1790
840
1690
(147.5)
(426)
(163)
6-Ø10
Install Hole
4-Ø40
Lifting Hole
Inlet Rc2"
Outlet Rc2"
2450
2206
15 1660 4-Ø47
Lifting Hole
1150
288
149
398
1186
1731860
4-Ø12
Install Hole
Control Box
Inlet
Rc2-1/2"
Outlet
Rc2-1/2"

Introduction
10 PKGP-SVX19A-EN
Operation Map
CXAU065/130-VS
Description Scope of application
The ambient temperature range of the unit operation
Cooling: -20~48°C
Heating: -30~48°C
The outlet water temperature range of the unit operation
Cooling: 5~20°C
Heating: 30~55°C
The ambient temperature range of the controller operation -10~60°C
The relative humidity range of the controller operation <90%
Note: The cooling or heating operation of the unit needs to meet the above operating map. Exceeding the operating
range will cause alarm and shutdown or even damage to the unit. Failure or damage of the unit caused by exceeding
operating map will result in paid services in accordance with relevant policies.