1. technology and computing
2. data centers

Installation Manual
Uniflair™ LE Chilled Water
HDCV4500, HDCV5000
208-230V/3Ph/60Hz
460V/3Ph/60Hz
575V/3Ph/60Hz
990-9621-001
Publication Date: August 2014
Schneider Electric IT Corporation Legal Disclaimer
The information presented in this manual is not warranted by the Schneider Electric IT Corporation to be
authoritative, error free, or complete. This publication is not meant to be a substitute for a detailed operational
and site specific development plan. Therefore, Schneider Electric IT Corporation assumes no liability for
damages, violations of codes, improper installation, system failures, or any other problems that could arise
based on the use of this Publication.
The information contained in this Publication is provided as is and has been prepared solely for the purpose of
evaluating data center design and construction. This Publication has been compiled in good faith by Schneider
Electric IT Corporation. However, no representation is made or warranty given, either express or implied, as to
the completeness or accuracy of the information this Publication contains.
IN NO EVENT SHALL SCHNEIDER ELECTRIC IT CORPORATION, OR ANY PARENT, AFFILIATE OR
SUBSIDIARY COMPANY OF SCHNEIDER ELECTRIC IT CORPORATION OR THEIR RESPECTIVE
OFFICERS, DIRECTORS, OR EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL,
PUNITIVE, SPECIAL, OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR
LOSS OF BUSINESS, CONTRACT, REVENUE, DATA, INFORMATION, OR BUSINESS INTERRUPTION)
RESULTING FROM, ARISING OUT, OR IN CONNECTION WITH THE USE OF, OR INABILITY TO USE THIS
PUBLICATION OR THE CONTENT, EVEN IF SCHNEIDER ELECTRIC IT CORPORATION HAS BEEN
EXPRESSLY ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SCHNEIDER ELECTRIC IT
CORPORATION RESERVES THE RIGHT TO MAKE CHANGES OR UPDATES WITH RESPECT TO OR IN
THE CONTENT OF THE PUBLICATION OR THE FORMAT THEREOF AT ANY TIME WITHOUT NOTICE.
Copyright, intellectual, and all other proprietary rights in the content (including but not limited to software, audio,
video, text, and photographs) rests with Schneider Electric IT Corporation or its licensors. All rights in the
content not expressly granted herein are reserved. No rights of any kind are licensed or assigned or shall
otherwise pass to persons accessing this information.
This Publication shall not be for resale in whole or in part.
Table of Contents
Safety ............................................................................................. 3
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Electrical Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Warnings for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
General Information ................................................................... 6
Inspecting the Cooling Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Storing the Cooling Unit Before Installation. . . . . . . . . . . . . . . . . . . . . . .6
Cross-reference Symbol Used in this Manual . . . . . . . . . . . . . . . . . . . . .6
Equipment Guidelines............................................................... 7
Working Conditions and Environmental Limits . . . . . . . . . . . . . . . . . . . .7
Lifting and Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Unit Overview .............................................................................. 8
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Name Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Cooling unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fan module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cooling unit and fan module . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Service clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installation Area Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Component Identification.......................................................15
External Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Uniflair LE Chilled Water Installation Manual
i
Display Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Internal Components
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installation .................................................................................. 19
Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Disconnect Switch, Door, and Removing Panels . . . . . . . . . . . . . . . . . 23
Main Disconnect Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Opening the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front panel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear panel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical panel access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
23
24
25
26
Unit Connections...................................................................... 27
Drainage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Placing and connecting the condensate pump to the drain . . .
Connecting the fan module flexible tubing . . . . . . . . . . . . . . .
Connecting to building gravity drains (without humidifier) . . . .
Chilled water piping connections . . . . . . . . . . . . . . . . . . . . . . .
Filling the chilled water circuit . . . . . . . . . . . . . . . . . . . . . . . . .
27
29
30
30
31
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Connecting power to the unit . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring a single power supply . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring a dual power supply . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power source and power supply voltage settings . . . . . . . . . .
Cooling unit electrical and communications connections . . . .
33
33
33
33
34
Network Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Accessories ............................................................................... 37
Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Supply water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Humidifier connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Drainage line and water supply line connections . . . . . . . . . . 39
ii
Uniflair LE Chilled Water Installation Manual
Safety
Important Safety Information
Read the instructions carefully to become familiar with the equipment before trying to install, operate, service,
or maintain it. The following special messages may appear throughout this manual or on the equipment to warn
of potential hazards or to call attention to information that clarifies or simplifies a procedure.
The addition of this symbol to a Danger or Warning safety label indicates that an electrical hazard
exists which will result in personal injury if the instructions are not followed.
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all
safety messages that follow this symbol to avoid possible injury or death.
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, can result in death
or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, can result in minor
or moderate injury.
NOTICE
NOTICE addresses practices not related to physical injury including certain environmental
hazards, potential damage or loss of data.
Guidelines
Schneider Electric will only consider itself responsible for the safety, reliability, and performance of the unit if:
• Repair work has only been carried out by authorized personnel.
• Electric installation conforms to the National Electric Code (NEC) and/or local code.
• Devices are used in conformity with the appropriate instructions.
Uniflair LE Chilled Water Installation Manual
3
WARNING
VIOLATION OF SAFETY STANDARDS
• Removal of or tampering with safety devices is a violation of safety standards and will
void all warranties.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Carefully read this manual before performing any maintenance or work on the units. Installation, maintenance,
and usage must meet all work safety standards. The operator responsible for the mentioned services must
possess expert knowledge of the devices. Schneider Electric refuses all responsibility for damage resulting
from the failure to follow safety standards.
WARNING
PERSONAL PROTECTIVE EQUIPMENT REQUIRED
• During installation authorized personnel must wear approved personal protective
equipment (PPE).
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
Electrical Safety
Read and adhere to the following important safety considerations when working with this cooling unit.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Turn off all power supplying this equipment before working on the equipment. All electrical
work must be performed by licensed electricians. Practice Lockout/Tagout procedures.
Do not wear jewelry when working with electrical equipment.
Failure to follow these instructions will result in death or serious injury.
Warning for Lifting and Transportation
Lifting and transporting the units must be carried out by specialized personnel as described in this manual.
WARNING
DAMAGE TO EQUIPMENT OR PERSONNEL
• The equipment is heavy and can easily be tipped. For safety purposes, adequate
personnel must be present when moving this equipment.
• The load must always be solidly anchored to the bearing element of the lifting equipment
and means of transport.
• No one should be near the suspended load, nor in the working area of the crane, forklift,
truck, or any other lifting equipment or means of transport.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Use all relevant safety standards to prevent any possible damage to people or objects.
4
Uniflair LE Chilled Water Installation Manual
Warnings for Installation
All work on the electrical installation must be carried out by licensed technicians only. Technical personnel must
use appropriate equipment when checking the grounding of devices. Installation locations should be secure
and limited to site authorized personnel or trained service technicians.
WARNING
HAZARD FROM MOVING PARTS
Keep hands, clothing, and jewelry away from moving parts. Check the equipment for
foreign objects before closing the doors and starting the equipment.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Intended Use
The cooling units have been designed and produced to provide air conditioning within the limits and methods
described in this manual. The cooling units must be used exclusively indoors. No modifications may be made to
the units or their parts without explicit written consent from Schneider Electric.
Use the cooling units for the purpose for which they were designed. Any mechanical or electrical modification
voids factory warranty.
Uniflair LE Chilled Water Installation Manual
5
General Information
The Uniflair chilled water cooling unit is a precision air conditioner designed to control environments for telecom
rooms, Internet hubs, and data processing centers. This manual covers the chilled water precision cooling
units.
This manual describes the cooling units with 208-230V/3-phase/60Hz, 460V/3-phase/60Hz, and 575V/3-phase/
60Hz power supply. It supplies general information, safety instructions, and unit installation procedures.
The descriptions and illustrations in this manual are owned by Schneider Electric. Schneider Electric reserves
the right to make any alterations it sees fit in order to improve the product without having to update this
document.
The illustrations in this manual are examples only and may differ from your product. All component locations
depend on model type and configuration.
Inspecting the Cooling Unit
The two sections of HDCV units are packaged in wooden crates or anchored to a pallet and covered with
transparent film.
Upon delivery, check to make sure the unit is intact and immediately notify the carrier in writing of any damage
that can be attributed to careless or improper transportation. Check for any damage on the area upon which the
user terminal is mounted.
In case of shipping damage, do not operate the cooling unit. Keep all packaging for used by the shipping
company for inspection and contact Schneider Electric.
Storing the Cooling Unit Before Installation
NOTICE
WEATHER DAMAGE
Leaving the cooling unit uncovered and exposed to possible damage from the environment will void
the factory warranty.
Failure to follow these instructions can result in equipment damage.
If storing the unit for a period of time, the following procedures must be followed:
• The storage area must be dry (<85% R.H.) and protected against extreme temperatures 50°C (122°F).
• The unit should remain in its original packaging if stored for long periods of time.
Cross-reference Symbol Used in this Manual
See another section of this document or another document for more information on this subject.
6
Uniflair LE Chilled Water Installation Manual
Equipment Guidelines
Working Conditions and Environmental Limits
HDCV4500/5000
Limit Working Conditions
Power supply voltage
D: 208-230V/3Ph/60Hz
G: 460V/3Ph/60Hz
L: 575V/3Ph/60Hz
V ±10%
Unit power input tolerance
Chilled Water Circuit
Maximum inlet cold water temperature
Minimum inlet cold water temperature
Maximum glycol percentage
Maximum operating pressure cold water circuit
25°C (77°F)
4.4°C (40°F)
50%
2400 kPa (348 psi)
Air Temperature
Maximum inlet air temperature
Minimum inlet air temperature
Maximum inlet relative humidity
Minimum inlet relative humidity
38°C (100°F)
18°C (64°F)
70%
25%
Maximum Three-way Valve Differential Pressure
320 kPa (47 PSI) is recommended to maintain normal operation of the valve actuator. *
Mixtures
HDCV units operate with pure water and with glycol mixtures.
Glycol mixtures with water ethylene glycol or propylene glycol must not exceed a 50% volume.
* Recommended 200kPa (29 PSI) to maintain normal operations of the valve actuator.
Lifting and Rigging
Using a forklift, pallet jack, or sling (spreader bar), move the fan module close to the required installation
location.
Pallet Jack
Uniflair LE Chilled Water Installation Manual
Forklift
Sling Spreader Bar
7
Unit Overview
The Uniflair LE Chilled Water with Underfloor Fans series is available in the following models:
• HDCV4500D/G/L
• HDCV5000D/G/L
Downflow units are designed to distribute air through a void under a raised access floor or a front supply subbase plenum when a raised floor is not available. Return air enters the top of the unit directly from the
environment or through a duct system.
na5308a
RAISED FLOOR
UNDER FLOOR
CONFIGURATION
8
ABOVE FLOOR
CONFIGURATION
Uniflair LE Chilled Water Installation Manual
Model Nomenclature
H D C V 45 0
0
D
IDENTIFYING
H = HIGH CAPACITY
AIRFLOW PATTERN
D = DOWNFLOW
HEAT OF REJECTION TYPE
C = CHILLED WATER UNITS
FAN TYPE
V = CENTRIFUGAL (EC) FANS WITH BACKWARD-CURVED
BLADES WITH ELECTRONIC COMMUTATION
MODEL NUMBER
45 = 150 kW, 50 = 180 kW
NUMBER OF COMPRESSORS INSTALLED
POWER SUPPLY VOLTAGE
D = 208–230V/3Ph/60Hz
G = 460V/3Ph/60Hz
L = 575V/3Ph/60Hz
na4900a
NUMBER OF REFRIGERATION CIRCUITS
Name Plate
The units can be identified by the name plate which is placed in the electrical panel of the unit. The model and
any additional accessories installed are indicated by an “X” in the corresponding box.
The plate carries the following data:
• Model and serial number
• Type of power supply
• Manufactured date
• Overall electrical rating
• Individual load electrical ratings
• Revision details
The following drawing provides an example of an HDCV unit name plate.
Uniflair LE Chilled Water Installation Manual
9
®
1660 Scenic Avenue
Costa Mesa
CA. 92626, USA
Model Number
HDCV5000L
Section Number
A
Serial Number
Manufacturing Date
07/14
Wiring diagram:
Design pressure:
Max outlet air temperature
Max external static pressure (Max fan speed - Min airflow):
06SE0355 [0S-5063] / B [00]
24 bar / 348 PSI
35 °C / 95 °F
770 Pa / 3.09 im.w.g.
Short-circuit current:
5 kA rms symmetrical, 600 V maximum
Rev D
SUPPLY VOLTAGE (LINE A)
SUPPLY VOLTAGE (LINE B)
Vers C
575V/3Ph/60Hz
575V/3Ph/60Hz
NO.
24V/115V
AUX
VOLTAGE(V)
FLA(A)[/1]
RLA(A)[/1]
LRA(A)[/1]
P(kW/HP)[/1]
)$1ĺĺ
TRANSFORMER *TR1*
TRANSFORMER *TR2+TR3*
TRANSFORMER *TR4/TR5*
TRANSFORMER *TR6a/TR6b*
UNIT
MCA
MOP
UNIT (+CONDENSATE DRAIN PUMP)
MCA (+CONDENSATE DRAIN PUMP)
MOP (+CONDENSATE DRAIN PUMP)
10
ĺĺ
NO.
1
2
1
2
VOLTAGE(V)
FLA(A)[/1]
ĺĺ
ĺĺ
ĺĺ
ĺĺ
P(kW/HP)[/1]
0.35
0.10
0.20
3.00
FLA(A)[/1]
17;17;15.7
20A
20A
P(kW/HP)[/1]
12.32/16.52
17.9;17.9;15.7
21A
20A
12.69/17.02
na5280a
CONDENSATE DRAIN PUMP (OPTIONAL)
Uniflair LE Chilled Water Installation Manual
Dimensions and Weight
Cooling unit
C
B
na4891a
A
Frame Size
Model
Airflow
7
8
4500
5000
Downflow
Downflow
Uniflair LE Chilled Water Installation Manual
Dimensions mm (in.)
A
B
C
Net Weight (Dry)
kg (lb)
1960 (77.2)
1960 (77.2)
2580 (101.5)
3110 (122.4)
865 (34)
865 (34)
810 (1785)
890 (1962)
11
Fan module
C
na4841a
B
A
Frame Size
Model
Airflow
7
8
4500
5000
Downflow
Downflow
Dimensions mm (in.)
A
B
C
Net Weight
kg (lb)
550 (21.6)
550 (21.6)
2580 (101.5)
3110 (122.4)
865 (34)
865 (34)
260 (573)
310 (683)
Cooling unit and fan module
C
B
na4890a
A
12
Frame Size
Model
Airflow
7
8
4500
5000
Downflow
Downflow
Dimensions mm (in.)
A
B
C
Net Weight
kg (lb)
2510 (98.8)
2510 (98.8)
2580 (101.5)
3110 (122.4)
865 (34)
865 (34)
1200 (2645)
1350 (2976)
Uniflair LE Chilled Water Installation Manual
Service clearance
na4834a
800 mm (32 in.)
Installation Area Requirements
The unit is designed for installation on raised access flooring using appropriate floor stands, supplied on
request from Schneider Electric, or in non-raised floor environments.
The installation area requires the following:
• 800 mm (32 in.) of clearance on the front side of the assembled HDCV unit
• Chilled water distribution piping
• A drainage system
• Air intake and discharge paths that are not blocked
• Installation on a flat, level surface
Uniflair LE Chilled Water Installation Manual
13
Component Identification
na5256a
External Components
Item






Uniflair LE Chilled Water Installation Manual
Description
Cover panels
Display interface
Electrical panel door handle
Main disconnect
Rubber seal
Fan module
15
Display Interface
Display
Reset
10/100
USB
Console
16
na4820a
Micro
SD
Service
Port
Item
Description
Function

LCD display
7-inch touch-screen color display.

Power LED
The display is powered when the LED is illuminated.

Check Log LED
When this LED is illuminated, a new entry has been made
to the event log.

Alarm LED
Displays current alarm condition of unit.

Status LED
Displays current network management card status.

Display Reset button
Resets the display microprocessor. This has no effect on
the air conditioner controller.

Link-RX/TX (10/100) LED
Displays current network link status.

Micro SD card slot
Memory card expansion slot.

Service port
USB-B port used only by service personnel.

USB-A port
Supports firmware upgrades and data extraction.

Serial Configuration port
Connects the display to a local computer to configure initial
network settings or access the command line interface
(CLI).
Uniflair LE Chilled Water Installation Manual
na5281a
Internal Components
Item












Description
Electrical panel door
Junction box door (ATS)
Junction box door
Transformers (L version only)
Fan
Humidifier (optional)
Condensate pump (optional)
2/3-way chilled water valve (optional)
Electrical reheat (optional)
2-way dehumidification valve (optional)
Cooling coil
Filter
Uniflair LE Chilled Water Installation Manual
17
Electrical components
TSR1 TSR2
F1 F2 F3 F5 F6 F9
F10 F11
CPY
pCOE
uCAP
SI
SPD
FS
F4 F7 F12
RFF
SAS
TR2
R1
S1
T1
TR3
PFS
SM4
CT1 CT2
SM5
SM6
CL1
SM7
CL2
CR1
CR1A CR2 CR2A
TR4
CU
IG
IG
na4889a
TR1
RFS RD RMS
CV
RSR
TR5
SEL
TAM
Item












Description
UPC5+s controller
CPY module
Expansion board
Ultra capacitor
Intermediate board
AFPS (optional)
Line contactors
Main disconnect switch
Transformers
Contactors
TAM (humidifier-optional)
Line selector (optional)
Item











Description
Time relay
Selector 208-230
Overload cutout
Clogged filters pressure switch
Terminal block
Auxiliary fuses
Air flow pressure switch
Flooding detector (optional)
Distribution block
Fuses
Heaters thermostats (optional)
NOTE: The location of components in the electrical panel depends on the unit type and configuration.
18
Uniflair LE Chilled Water Installation Manual
Installation
NOTICE
EQUIPMENT DAMAGE RISK
Install the unit in an area that is protected from adverse conditions.
Failure to follow these instructions can result in equipment damage.
NOTICE
RISK OF SPILLAGE
Installing the unit on an uneven surface may result in overflow spilling from the
condensate tray.
Failure to follow these instructions can result in equipment damage.
Uniflair LE Chilled Water Installation Manual
19
Power Supply Requirements
Review the electrical rating label on the equipment to determine the maximum possible draw of the equipment.
Installation
WARNING
TIPPING HAZARD
The equipment is heavy and can easily be tipped. For safety purposes, adequate
personnel must be present when moving this equipment.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
NOTICE
EQUIPMENT DAMAGE
Fan unit electrical/communication covers, chains, and screws must be removed before
mounting the cooling unit on top of the fan unit.
Failure to follow these instructions can result in equipment damage.
1. If using a stand, place it at the required installation location.
NOTE: The stand is optional.
2. Using a forklift, pallet jack, or sling (spreader bar), move the fan module close to the required installation
location.
na4780a
3. Unbolt the fan module from the pallet.
na5254a
4. Remove the electrical/communications covers, chains, and attaching screws on the fan unit. Safely
discard this hardware away from the fan and cooling units.
5. If using a stand, place the fan module top of the stand.
20
Uniflair LE Chilled Water Installation Manual
na4990a
6. Bolt the fan module to the stand with the bolts provided.
NOTE: If placing the cooling unit above a raised floor, support must be provided for the unit.
7. The fan module can be placed above or below a raised floor. The following graphic shows the fan
module beneath a raised floor.
RAISED FLOOR
na4935a
FAN MODULE
FLOOR STAND
8. Using the pallet jack or forklift, move the cooling unit close to the installation location.
na5171a
9. The following illustration provides an example of the steps required to place the cooling unit on top of
the fan unit.
10.Lift the cooling unit on top of the fan module. It is recommended that a flexible rubber seal at least 5 cm
Uniflair LE Chilled Water Installation Manual
21
(2 in.) thick be placed between the raised floor panels and the cooling unit.
RUBBER SEAL
na4923a
COOLING UNIT
RAISED
FLOOR
PANELS
FAN MODULE
na4840a
11. Fasten the cooling unit to the fan module using the supplied screws.
22
Uniflair LE Chilled Water Installation Manual
Disconnect Switch, Door, and Removing Panels
WARNING
ELECTRICAL HAZARD
Before servicing, disconnect the power supply
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
WARNING
HEAVY EQUIPMENT
The panels are heavy. Use extreme caution when moving.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Main Disconnect Handle
NOTE: The main disconnect handle must be turned to OFF before opening the door.
Each cooling unit provides an external pistol-handle main disconnect switch and interlocking door.
na4948a
INTERLOCKING DOOR
MAIN DISCONNECT HANDLE
Opening the door
1. Turn the unit disconnect handle to the OFF position before opening the front panel.
2. Push the button and gently pull the handle outwards.
Uniflair LE Chilled Water Installation Manual
23
na4947a
3. Turn the handle downwards until the door opens.
Front panel removal
1. Firmly hold the panel at the top and pull straight out.
na4906a
2. Lift and incline the panel outwards until it is completely removed.
NOTE: After removing the side panels, a non-removable protective internal panel blocks access to the inside of
the unit.
24
Uniflair LE Chilled Water Installation Manual
Rear panel removal
WARNING
MOVING PARTS HAZARD
Do not remove rear panels if the equipment is operating.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
na4932a
The mechanical compartment, the electric heaters (if present) and the humidifier (if present) are protected by
internal protection panels for safety reasons and to allow the opening of the external panels without triggering
the safety alarms.
Uniflair LE Chilled Water Installation Manual
25
Electrical panel access
1. Loosen the screws securing the panel.
2. Firmly hold the panel.
na4894a
3. Slowly pull the panel away from the unit until removed.
DOOR
ELECTRICAL PANEL
COVER
ELECTRICAL PANEL
26
Uniflair LE Chilled Water Installation Manual
Unit Connections
Drainage Connections
Placing and connecting the condensate pump to the drain
1. Move the box containing the condensate pump from the cooling unit to the opening in the fan module
.
2. Attach the box containing the condensate pump to the fan module with the two provided screws  .
na5155a
3. Remove the front panel .
4. Cut off any excess hose when connecting the condensate pump to the drain. The drain hose from the
condensate pump to the drain must not have a trap or bend.
na5327a
NO TRAPS OR BENDS IN
THE HOSE TO THE DRAIN
Uniflair LE Chilled Water Installation Manual
27
na5328a
5. Connect the condensate pump drain to the drain line and secure with a clamp.
6. Replace the panel.
28
Uniflair LE Chilled Water Installation Manual
Connecting the fan module flexible tubing
Water from the exchanger coil drains into a condensate tray. This water drains through two, 22-mm (0.86-in.)
flexible tubes. Flexible tubes are located on each side of the fan module, and both must be connected.
1. Remove the plastic clamp holding the flexible tubes to the fan module frame. There are drains on both
sides of the units. Do not remove the plastic clamps that form the flexible tube traps.
FLEXIBLE TUBE
na4988a
DO NOT REMOVE
THE PLASTIC
CLAMP FORMING
THE TUBE TRAP
FLEXIBLE TUBE
2. Connect the flexible tubing on both sides of the units to the condensate drain tray.
na4997a
FLEXIBLE
TUBE
3. After connecting the flexible tubes on both sides, fill the flexible tubing with water for proper siphoning.
Uniflair LE Chilled Water Installation Manual
29
na4737a
Connecting to building gravity drains (without humidifier)
Item



Description
Drain
Trap
Minimum slope
1. Connect the unit drainage tube to the building drains using a rubber or plastic tube with a 1 in. internal
diameter.
2. Use a trap on the external drainage tube in order to avoid unpleasant odors and to allow the condensate
pan to drain properly. Consult local building codes for drain requirements.
3. Once the connections have been made, pour water into the condensate drain until the trap inside the
unit is full. See “Humidifier connections” for information about connecting to building drains on units with
a humidifier.
Chilled water piping connections
NOTICE
USE OF QUALIFIED TECHNICIANS
• The laying of the lines and the water connections must be performed by a qualified
technician.
• All lines must be properly supported, insulated, and isolated to avoid premature joint
failures due to system vibrations.
Failure to follow these instructions can result in equipment damage.
NOTE: Draining the unit is recommended after prolonged inactivity.
NOTE: The following procedures do not apply to the condensate drain.
For all water connections:
1. Use shutoff valves (not supplied) to isolate the unit from the water circuit. If possible, use full port-ball
valves to minimize the pressure drop.
2. Check that the water pipe sizes and the circulating pump quality are adequate; insufficient water flow
affects unit performance.
3. Check that the water flow directions are verified and connected properly between the unit and building.
NOTE: Assure that all pipes are free of debris and assure all system strainers are in place and
oriented in the correct direction.
4. Insulate all water pipes with closed cell insulating material (for example, Armaflex™ or equivalent),
avoiding air gaps and condensation. The insulation must allow accessibility to the valves and threepiece joints.
5. Check that the water circuits are supplied with a maximum water pressure of 2068 kPa (350 psi). Install
a safety valve with a setpoint of no more than 2068 kPa (300 psi).
30
Uniflair LE Chilled Water Installation Manual
OUT
na4998a
IN
Filling the chilled water circuit
NOTE: Water used to fill the chilled water circuit must be filtered with a minimum 20 mesh stainless steel
screen.
NOTE: Filling the chilled water circuit must be done by a qualified mechanical contractor.
1. Disconnect the power supply.
2. Clean the primary circuits before filling the units (a particulate strainer should be installed in the supply
water piping within close proximity to the unit).
Uniflair LE Chilled Water Installation Manual
31
3. Check that all unit bleed air valves (on the upper part of the unit) are closed.
na4979a
BLEED AIR VALVES
4. Open the isolation valves (field installed) and fill the chilled water circuit.
5. Open the bleed air valve and wait for the water to flow.
6. Repeat step 5 if necessary to remove all air.
Electrical Connections
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Turn off all power supplying this equipment before working on the equipment. All electrical
work must be performed by licensed electricians. Practice Lockout/Tagout procedures.
Do not wear jewelry when working with electrical equipment.
Failure to follow these instructions will result in death or serious injury.
WARNING
USE OF QUALIFIED PERSONNEL
• Electrical connections from the unit to the power supply must be performed by a licensed
electrician.
• Electrical lines must be installed in compliance with all local and national codes.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
32
Uniflair LE Chilled Water Installation Manual
Connecting power to the unit
1. Use suitable equipment to check grounding system efficiency.
2. Ensure that the facility voltage and frequency correspond to those of the unit (see the name plate).
3. Ensure the main power switch is in the OFF position.
4. If locked, press the button on the door latch and rotate the handle downward to open the door.
5. Remove the panel (see “Front panel removal” on page 24).
6. Remove the metal cover of the main field wiring junction box.
Wiring a single power supply
1. Route the power supply cable through the knock-out panel to the terminal block.
2. Connect the power cable to the terminal block using the diagram provided below.
IG
L1
L2
L3
L1
L2
L3
T1
T2
T3
T1
T2
T3
L1 L2 L3 PE
POWER CABLE KNOCK-OUT PANEL
SINGLE SOURCE
POWER SUPPLY
L10 L20 L30 PE
na4899a
IG
ATS
(DUAL POWER
SOURCE)
Wiring a dual power supply
1. Route the power cable through the knock-out panel to the terminal block.
2. Connect the power cable to the terminal block using the diagram provided in “Wiring a dual power
supply” on page 33.
Power source and power supply voltage settings
Uniflair LE chilled water units provide a primary A, or backup B power supply. The power selector switch allows
you to select the active power source. Note the following:
• The switch does not physically move if the active power source changes.
• If the active power A is selected and fails, B automatically supplies power.
• If the active power B is selected and fails, A automatically supplies power.
Uniflair LE Chilled Water Installation Manual
33
Uniflair LE chilled water units use 208V or 230V power voltage settings. The power voltage setting switch
allows you to select the required voltage.
POWER VOLTAGE SETTING
SWITCH
208V
230V
BACKUP
PRIMARY
B
na4996a
A
PRIMARY (A) AND BACKUP
POWER (B) SOURCE SWITCH
Cooling unit electrical and communications connections
The connection between the cooling unit and fan section is made with two cables: one for electrical power (Ma)
and one for communication (Mb). Make these connections after installation is complete. Note the following
when connecting the cables:
• In order to ensure proper wiring, it is necessary to tighten the nut.
• Do not connect or disconnect connectors under load.
• During the connection and disconnection phases, avoid improper strains on the contacts.
34
Uniflair LE Chilled Water Installation Manual
ELECTRICAL
POWER CABLE
Ma
na4878a
Mb
COMMUNICATION
CABLE
Ma
Uniflair LE Chilled Water Installation Manual
Mb
35
Network Connection
IG
CPY
pCOE
uCAP
SI
SPD
The microprocessor controller connects through the interface module to the Network Management Card
(NMC), which is embedded in the touch screen display interface.
CR1A CR2 CR2A
TAM
CR1
Network
Display
na4831a
na4943a
SEL
RFS RD RMS
CV
CU
SM4
SM5
SM6
SM7
TR1
TR3
T1
S1
R1
SAS
F4 F12 RFF
FS
Com D1+D0Modbus
INTERFACE
MODULE
LOCATION
RJ-45 PORT FOR
CUSTOMER
CABLE
36
A-Link
Display Interface
RSR
TR2
24VAC
Uniflair LE Chilled Water Installation Manual
Accessories
na5091a
Humidifier
Item



Description
Steam outlet
Humidifier cylinder
Water supply solenoid valve
Uniflair LE Chilled Water Installation Manual
Item



Description
Water supply connections
Water drain connection
Cylinder drain solenoid valve
37
Supply water
The following table provides values for the feed water for medium-high level of conductibility of a humidifier with
immersed electrodes.
Limits
Description
Units
Minimum
Maximum
pH
-
7
8.5
σ R, 20°C
μS/cm
300
1250
Total dissolved solids
TDS
mg/l
(1)
(1)
Residual fixed at 180°C
R180
mg/l
(1)
(1)
TH
mg/l
100(2)
400
mg/l
60(3)
300
mg/l Fe + Mn
0
0.2
ppm Cl
0
30
Silica
mg/l
0
20
Residual chloride
mg/l
0
.2
Calcium sulphate
mg/l
0
100
Metallic impurities
mg/l
0
0
Solvents, soaps, and lubricants
mg/l
0
0
Hydrogen ion activity
Specific conductibility at 20°C
Total hardness
Temporary hardness
Iron + manganese
Chlorides
(1)
(2)
(3)
38
Values dependent on the specific conductibility; in general: TDS @ 0,93 * s20; R180 @ 0,65 * s20
Not lower than 200% of the Chloride content in mg/l di ClNot lower than 300% of the Chloride content in mg/l di Cl-
Uniflair LE Chilled Water Installation Manual
Humidifier connections
If a humidifier is installed, the unit requires a potable cold water supply. Condensate must be removed by a
gravity drain using proper P-traps, or by an optional condensate pump.
Humidifier installation requires connection to the water drain feed tubes.
NOTE: A factory-supplied water hose connects the humidifier to the piping on site.
32 mm
1.25 in.
20 mm
.78 in.
na5257a
min 5°
Item





Description
Drain line
Trap
Filter replaceable water cartridge filter (recommended)
Valve
Feed tube
Drainage line and water supply line connections
WARNING
HOT WATER HAZARD
• Use caution when servicing the humidifier. The water discharged from the humidifier is at
a very high temperature.
• Use a drainage tube designed to withstand temperatures of at least 100°C (212°F).
• Keep the drainage tube away from all electrical cables and refrigerant lines.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
1. Route the humidifier drainage line into a basin or drain pan using a rubber or plastic tube that is resistant
to high temperatures with a minimum of 100°C (212°F) and a 20 mm (.78 in.) internal diameter.
2. Use a trap on the external drainage tube to avoid unpleasant odors and water overflow from the
humidifier tray. Consult local building codes for drain requirements.
3. Once the connections are complete, pour water into the unit condensate collection tray and fill the in the
humidifier condensate collection tray until the trap is full.
Uniflair LE Chilled Water Installation Manual
39
Worldwide Customer Support
Customer support for this or any other product is available at no charge in any of the following ways:
• Visit the Schneider Electric Web site to access documents in the Schneider Electric Knowledge Base
and to submit customer support requests.
– www.schneider-electric.com (Corporate Headquarters)
Connect to localized Schneider Electric Web sites for specific countries, each of which provides
customer support information.
– www.schneider-electric.com/support/
Global support searching Schneider Electric Knowledge Base and using e-support.
• Contact the Schneider Electric Customer Support Center by telephone or e-mail.
– Local, country-specific centers: go to www.schneider-electric.com > Support > Operations
around the world for contact information.
For information on how to obtain local customer support, contact the representative or other distributors
from whom you purchased your product.
As standards, specifications, and designs change from time to time, please ask for confirmation of the information given in this publication.
© 2014 Schneider Electric. All Rights Reserved.
Uniflair and the Schneider Electric logo are trademarks owned by Schneider Electric Industries SAS S.A.S., or its affiliated companies. All other
trademarks are the property of their respective owners.
990-9621-001
8/2014