Uniflair™ LE Cooling Units Direct Expansion, Twin-Cool ... · Direct Expansion, Twin-Cool, ... 24...

Installation Manual

Uniflair™ LE Cooling Units

Direct Expansion, Twin-Cool, Energy Saver

208–230 V/3 Ph/60 Hz, 480 V/3 Ph/60 Hz, 575 V/3 Ph/60 Hz

990-4482C-001

Publication Date: August 2016

Schneider Electric IT Corporation Legal DisclaimerThe 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.................................................................................1Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Warnings for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Work requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Warning for lifting and transportation . . . . . . . . . . . . . . . . . . . . 2Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

General Information...........................................................3Document Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Cross-reference symbol used in this manual . . . . . . . . . . . . . . 3Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Save these instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Cross-reference symbol used in this manual . . . . . . . . . . . . . . 3

Receiving and Inspecting the Cooling unit\ . . . . . . . . . . . . . . . . . . . . . . 3Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Inspecting for missing components . . . . . . . . . . . . . . . . . . . . . . 4Filing a claim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Storing the Cooling Unit Before Installation . . . . . . . . . . . . . . . . . . . . . . 4

Waste Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Recycle materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Waste Electrical and Electronic Equipment (WEEE) disposal . 4

Moving the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Equipment Guidelines........................................................6Warnings for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Anti-freeze mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Environmental Limits for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Hot water reheat circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Cold water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Unit Overview ....................................................................8Types of Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Uniflair LE Direct Expansion Installation Manual i

Airflow Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Upflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Downflow/Underfloor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Name Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Component Identification .................................................12External Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Display interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Cover panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Internal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Downflow units (TDAV1121 shown) . . . . . . . . . . . . . . . . . . . . 14Upflow units (TUAV1121 shown) . . . . . . . . . . . . . . . . . . . . . . 15Cooling circuit (TDAV1121 shown) . . . . . . . . . . . . . . . . . . . . . 16Electrical panel door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Electrical panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Brazed plate heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . 18

Installation........................................................................19Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Access and clearance requirements . . . . . . . . . . . . . . . . . . . . 19Power supply requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Humidifier and drain requirements . . . . . . . . . . . . . . . . . . . . . 20

Installation Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Installation on non-raised flooring . . . . . . . . . . . . . . . . . . . . . . 20Installation on raised access flooring . . . . . . . . . . . . . . . . . . . 20Floor stand installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Opening the Door and Removing the Front Panels . . . . . . . . . . . . . . . 22Main disconnect switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Opening the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Internal Protection and Rear Panels . . . . . . . . . . . . . . . . . . . . . . . . . . 24Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Unit Connections..............................................................25Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Connecting power to the unit . . . . . . . . . . . . . . . . . . . . . . . . . . 25Setting the unit power supply voltage . . . . . . . . . . . . . . . . . . . 26

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Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Connecting to building drains (without humidifier) . . . . . . . . . 28

Pressure Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Refrigerant Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30General guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Equivalent line length of fittings . . . . . . . . . . . . . . . . . . . . . . . . 30Discharge line sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Calculating total discharge line size . . . . . . . . . . . . . . . . . . . . 32Discharge line size—vertical . . . . . . . . . . . . . . . . . . . . . . . . . . 32Discharge line size—horizontal . . . . . . . . . . . . . . . . . . . . . . . . 32Liquid line sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Refrigeration circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Gross pressure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33System evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Refrigerant charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Water Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Filling the Chilled Water Circuit . . . . . . . . . . . . . . . . . . . . . . . . 36

Energy Saver Units..........................................................37Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Accessories .....................................................................39Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Humidifier connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Connecting to the drainage and water supply lines . . . . . . . . 40Supply water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Temperature and Humidity Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

iiiUniflair LE Direct Expansion Installation Manual

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Safety

Important Safety InformationRead 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.

1iflair LE Direct Expansion Installation Manual

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Warnings for InstallationWork requirements

• All work on the electrical installation must be carried out by licensed technicians only. • All installation work must be carried out by technicians that have been qualified and trained on

Schneider Electric cooling products. • Technical personnel must use appropriate equipment when checking the grounding of devices.• Adopt all of the cautions provided by the relevant safety standards in order to prevent any

possible damage to people or objects.• Installation locations should be secure and limited to site authorized personnel and/or trained

service technicians.

Warning for lifting and transportation

Lifting and transporting the units must be carried out by specialized personnel as described in this manual.

Electrical safety

Read and adhere to the following important safety considerations when working with this cooling unit.

WARNINGDAMAGE 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 moderate injury or equipment damage.

DANGERHAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Turn off all power supplying this equipment before working on the equipment.

• Practice Lockout/Tagout procedures.

• All electrical work must be performed by licensed electricians.

• All electrical wiring must comply with local and national codes and regulations.

• Do not wear jewelry when working with electrical equipment.

• Ensure the equipment is connected to a grounded outlet.

Failure to follow these instructions will result in death or serious injury.

Uniflair LE Direct Expansion Installation Manual

General Information

Document OverviewThis 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, unit transportation, installation information, and necessary information about how to use the units.

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. Component locations depend on model type and configuration.

Cross-reference symbol used in this manual

See another section of this document or another document for more information on this subject.

NOTE: Indicates important information.

Abbreviations

T*AV—Air-Cooled

T*TV—Twin-Cool Air-Cooled

T*WV—Water-Cooled

T*DV—Twin-Cool Water-Cooled

T*EV—Energy Saving

*Upflow (U)/Downflow (D)

Save these instructions

This manual contains important instructions that must be followed during the installation of this equipment.

Cross-reference symbol used in this manual

See another section of this document or another document for more information on this subject.

Receiving and Inspecting the Cooling unit\Inspecting the Equipment

The cooling unit is packaged in a wooden crate 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 display interface is mounted.

In case of shipping damage, do not operate the cooling unit. Keep all packaging for inspection used by the shipping company and contact Schneider Electric Corporation.

3Uniflair LE Direct Expansion Installation Manual

Verify that all parts ordered were received as specified and that the equipment is the correct type, size, and voltage.

Inspecting for missing components

All shipped loose components are identified by part number and description on the bill of lading. Ensure each item is present before accepting delivery of the unit.

Filing a claim

If damage has occurred, or if shipped loose parts are missing, report it immediately to the delivering carrier and note the problem on the receiving copy of the bill of lading. Failure to do so will result in replacement parts and repairs being billed to the customer.

NOTE: In case of shipping damage, do not operate the equipment. Keep all packaging for inspection by the shipping company and contact Schneider Electric.

Storing the Cooling Unit Before InstallationIf the cooling unit will not be installed immediately, store it in a safe place and adhere to the following requirements:

• Packaging must be intact• Storage area must be dry (<85% R.H.) and protected against extreme temperatures 50°C (122°F) or

sustained temperatures below 0°C (32°F).

Waste DisposalRecycle materials

The shipping materials are recyclable. Save them for later use, or dispose of them appropriately. The unit consists of mostly recyclable materials; separate materials before disposal.

Waste Electrical and Electronic Equipment (WEEE) disposal

Schneider Electric products comply with international directives on the Restriction of Hazardous Substances (RoHS) in electronic and electrical equipment and the disposal of Waste Electrical and Electronic Equipment (WEEE). Dispose of any waste electronic or electrical equipment with the appropriate recycling center. Contact Schneider Electric for assistance.

Uniflair LE Direct Expansion Installation Manual4

Moving the EquipmentThe recommended tools for moving the equipment while it is still on the pallet include the following:

The following graphic provides an example of equipment used to move the unit safely.

Crane Sling

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Equipment Guidelines

Warnings for UseThe air conditioning units have been designed and produced to provide air conditioning within the limits and methods described in this manual. The air conditioners must be used exclusively indoors.

No modifications may be made to the units or their parts without explicit written consent from Schneider Electric. Only use the machinery for the purpose for which it was designed and manufactured. Any mechanical or electrical modification will void any factory warranty.

Anti-freeze mixtures

The units are designed to operate both with pure water and with anti-freeze mixtures. If used with anti-freeze mixtures, the units can only operate with water mixed with ethylene glycol or propylene glycol with a maximum concentration weight of 40%.

NOTE: Please contact Schneider Electric for applications outside of the documented specifications.

Environmental Limits for UseIn order to achieve rated performance, the environmental conditions must be within the following values:

Hot water reheat circuit

• Maximum inlet hot water temperature: 82°C (180°F) (test based)• Minimum inlet hot water temperature: 45°C (113°F)• Maximum operating pressure hot water circuit: 2068 kPa (300 psi)

Cold water circuit

• Maximum inlet cold water temperature: – T*TV: 25°C (77°F)– T*DV:

• 25°C (77°F) for chilled water circuit• 43.3°C (110°F) for condensing water circuit

– T*EV: • 25°C (77°F) for Energy Saving mode• 43.3°C (110°F) for DX mode

– T*WV: 40.5°C (105°F)• Minimum inlet cold water temperature:

– T*TV: 6°C (42°F)– T*DV:

• 6°C (42°F) for chilled water circuit• 18.3°C (65°F) for condensing water circuit

– T*EV: • 6°C (42°F) for Energy Saving mode• 18.3°C (65°F) for DX mode

– T*WV: 18.3°C (65°F)• Maximum glycol percentage: 50%• Maximum operating pressure cold water circuit: 2068 kPa (300 psi)


Air

• Maximum inlet air temperature: 35°C (95°F)• Minimum inlet air temperature: 17.8°C (64°F)• Maximum inlet relative humidity: 70%• Minimum inlet relative humidity: 20%• Maximum inlet dew point temperature:

– All models: 15°C (59°F); except TDAV3342: 13.3°C (56°F)


Unit Overview

Types of CoolingA precision air conditioner is designed to control environments for telecom rooms, Internet hubs, and data processing centers. The Uniflair DX series is available in the following types of cooling configurations:

• Air-cooled Direct Expansion—Air cooled DX units extract heat from the room and transfer it to the outside using air cooled refrigerant heat exchangers (condensers). The room unit and external condenser form an autonomous sealed circuit once installed. Each refrigeration circuit must be connected to its remote air-cooled condenser with copper pipe.

• Water-cooled Direct Expansion—In DX water-cooled units, the heat extracted from the room is transferred to water via a stainless steel brazed plate heat exchanger within the unit. The cooling water may be supplied from the mains supply, a cooling tower or a well (open circuit), or recycled in a closed loop cooled by external coolers. In a closed-loop system, an anti-freeze mixture of water and ethylene glycol is normally used. The water cooled units have refrigerant circuits that are charged and sealed in the factory and do not require site-installed refrigerant piping.

• Twin Cool with chilled water cooling and air-cooled or water-cooled Direct Expansion—Twin-Cool DX units are typically deployed in installation sites where the chilled water source cannot be relied on for continuous service. In this application, function priority is given to the chilled water circuit. If the chilled water supply is insufficient, or if the water is not cold enough to dissipate the entire heat load, the microprocessor controller automatically starts direct expansion operation. Alternately, the unit can be configured to prioritize direct expansion operation and to activate chilled water operation in the event of a compressor shut-down.

• Energy Saving with economizer cooling and water cooled Direct Expansion—Energy-Saving units provide an energy-efficient solution in cool or temperate climates. They are designed to provide significant reductions in operating costs and payback periods.The operating principle exploits the free-cooling effect available when the outside temperature is lower than the inside temperature: the lower the outside temperature, the greater the energy saving. The microprocessor controller manages the operation of the unit automatically in three different situations:

– Typical operation—In summer, the unit operates as a typical closed circuit, glycol-cooled system.– Partial Economization—As the external temperature decreases, the coolant can be used directly for

the free-cooling of the air. In this application, the coolant is circulated in the coil inside the unit, and both the refrigerant circuit and the glycol circuit contribute to cooling, thus reducing the energy used by the compressor.

– Total Economization—If the outside temperature increases further to where the coolant can dissipate the entire heat load from the room, then the refrigerant circuit is shut down completely, and the unit functions as a traditional chilled water unit with a modulating valve.


Airflow ConfigurationsUpflow

Upflow units are designed to distribute air through a supply plenum, pre-engineered duct system, or drop ceiling. Return air can enter the unit via the front, rear, or bottom of the unit based on configuration. A sub-base is required to allow access for power, water, and refrigerant connections on non-raised floor installations.

Downflow/Underfloor

Downflow units are designed to distribute air through a void under a raised access floor or a front supply sub-base 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.

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FRONT RETURN WITH FRONT SUPPLY

(PLENUM AND GRILLE)

REAR RETURN WITH TOP SUPPLY

FRONT RETURN WITH TOP SUPPLY

BOTTOM RETURN WITH TOP SUPPLY

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TOP RETURN WITH BOTTOM SUPPLY

(PLENUM AND GRILLE

TOP RETURN WITH BOTTOM SUPPLY(FLOORSTAND)


Model Number Nomenclature

T D A V 33 4 2 G

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IDENTIFYING PREFIX

AIRFLOW PATTERNU = UPFLOWD = DOWNFLOW

HEAT OF REJECTION TYPEA = AIR-COOLED DIRECT EXPANSION UNITSW = WATER-COOLED DIRECT EXPANSION UNITST = TWIN-COOL (AIR-COOLED) UNITSD = TWIN-COOL (WATER-COOLED) UNITSE = ENERGY SAVING UNITS

FAN TYPEV = CENTRIFUGAL (EC) FANS WITH BACKWARD-CURVED

NOMINAL COOLING CAPACITY05 = 17kW; 09 = 25 kW; 11 = 35kW; 14 = 46 kW; 16 = 51 kW; 18 = 53 kW; 22 = 70 kW; 25 = 72 kW; 28 = 76 kW; 33 = 78 kW

NUMBER OF COMPRESSORS INSTALLED

NUMBER OF REFRIGERATION CIRCUITS

POWER SUPPLY VOLTAGED = 208 – 230 V/3 Ph/60 HzG = 460 V/3 Ph/60 HzL = 575 V/3 Ph/60 Hz


Name PlateUnits can be identified by the name plate in the electrical panel of the unit. The model and any additionally installed accessories are indicated by an X in the corresponding box.

The plate provides the following data:

• Model and serial number• Type of power supply• Overall electrical rating• Individual load electrical ratings• Full load amps (FLA)• Minimum circuit ampacity (MCA)• Maximum overcurrent protection (MOP)• Maximum inlet hot water temperature (if present)• Maximum fan static pressure at max fan speed (ESP MAX)• Efficiency rating of the unit (SCOP)

TDAV3342G(C) SERIAL No.

TENS. 460V/3Ph/60Hz AUX. 24-230VNO. TENS. (V) FLA (A) [/1] RLA (A) [/1] LRA (A) [/1] P (kW/HP) [/1]

COMPRESSOR 4 460/3 14.5 14.5 100 9.17/12.3FAN 3 380-480/3 4.9 0 0 3.08/4.13

UNIT 72.7 45.92/61.58MCA 76 AMOP 90 A

Short-circuit current: 5 kA rms symmetrical, 600 V maximum

AP1-2 STOP: 40.5/587.4 bar/psi (Manual reset) VAC 77/170.6 °C/°F (Max inlet hot w ater temperature) ESP TD.A-W (Max) 505/2.03 Pa/in.w .g. (Max fan speed)

SAFETY VALVE OPEN: 45/652.7 bar/psiCHARGE: R410A kg/circ. 0.0 oz/circ.PRECHARGE: DRY NITROGEN N2


Component Identification

External Components

Item Description

Cover panels Display interface Electric panel door Main disconnect

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Display interface

Cover panels

Cover panels allow access to the internal components of the unit.

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 When illuminated, the system has an active alarm.

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).


To avoid possible personal injury or death, the access door locking mechanism must be re-engaged after access to a compartment for inspection or service requirements.


DisplayReset

MicroSD

ServicePort

USBConsole

10/100

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Internal ComponentsDownflow units (TDAV1121 shown)

NOTE: The following figure is shown as an example and may not represent the customer model.

Item Description

Electrical panel Fan Brazed plate heat exchanger Filter drier Liquid receiver Compressor Junction box Humidifier Electric reheat Filter Coil

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Upflow units (TUAV1121 shown)


Item Description

Fan Electrical panel Brazed plate heat exchanger Filter drier Relief valve Liquid receiver Junction box Humidifier Actuator Compressor Filter Coil Electric reheat

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Cooling circuit (TDAV1121 shown)


Electrical panel door

Item Description

High pressure switch Electronic expansion valve Service valve Refrigerant level sight glass Isolation valve Liquid line solenoid valve Pressure relief valve Refrigerant liquid line connection Refrigerant hot gas discharge connection Liquid line filter Receiver Compressor

DANGERHAZARD OF ELECTRIC SHOCK.

To avoid possible personal injury or death, the access door locking mechanism must be re-engaged after access to a compartment for inspection or service requirements.


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Electrical panel

NOTE: The location of components in the electrical panel depends on the unit type and configuration.

Item Description

Main disconnect switch Clogged filter switch Air flow switch Circuit protectors (overload cutouts, fans, and compressors) Circuit relays (fan, compressor, humidifier, and heater) Voltage setting switch Terminal block Compressor contactor Transformer Display Interface module Terminal block Humidifier controller module Microprocessor controller

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34a


Brazed plate heat exchanger

Item Description

Brazed plate heat exchanger (water-cooled units only) Input water circuit Output water circuit

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Installation

Site Preparation

Access and clearance requirements

The area of installation must follow these requirements:

• Minimum floor stand height requirement is 203.2 mm (8 in.) for downflow units.• Front of unit must have a minimum of 700 mm (28 in.) service clearance.• Air intake and discharge connections must not be blocked.• Unit must be installed on a flat, level surface.

NOTICEEQUIPMENT DAMAGE RISK

Install the unit in an area that is protected from adverse conditions.

Failure to follow these instructions can result in equipment damage.

NOTICERISK OF SPILLAGE

Installing the unit on an uneven surface may result in overflow spilling from the condensate tray.


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700 mm (28 in.)


Power supply requirements

Review the electrical rating label on the equipment to determine the maximum current draw of the equipment.

Humidifier and drain requirements

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.

For inlet water requirements for proper operation, see “Humidifier connections” on page 40.

Installation TypesDownflow units are designed for installation on raised access flooring using appropriate floor stands—or in non-raised floor environments on a provided sub-base discharge plenum supplied by Schneider Electric.

NOTE: Upflow units with air intake through the rear or front can also be installed on floors that are not raised (these systems require a sub-base or floor-stand).

Installation on non-raised flooring

Installation on non-raised flooring without using floorstands is only allowable on upflow models with rear or front air return. For installations without raised floors, a sub-base is required for routing piping and electrical wiring to unit.

Installation on raised access flooring

Installation on raised access flooring requires the support of a floor stand beneath the unit. The floor stand allows installation of the unit before the raised floor is installed, increases absorption of noise and vibrations, and facilitates connection of pipes and cables. Use a vibration pad under each leg to reduce vibration.

Floor stand installation

Using the floor stand, position the unit on the mounting frame and secure it using the M8 screw inserts found on the base of the unit.

For details about floor stand installation, see Uniflair LE Accessories Manual.

NOTE: Install a flexible seal (field supplied) at least 5 mm (0.2 in.) thick between the raised floor panels and the mounting frame, which should also be isolated from the metallic floor structure.

WARNINGALL EQUIPMENT MUST BE GROUNDED

• Verify all equipment is grounded.

• Electrical service must conform to national and local electrical codes and regulations.

Failure to follow these instructions can result in death, serious injury, or equipment damage.


NOTE: The minimum raised floor height is 203.2 mm (8 in.).

Item Description

Cooling unit Flexible seal Raised floor Floor stand

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Opening the Door and Removing the Front Panels

Main disconnect switch

Each unit is provided with an external pistol handle main switch with an interlocking door. The main switch is positioned below the touch screen display.

WARNINGELECTRCIAL HAZARD

Before servicing, disconnect the power supply.


WARNINGHEAVY EQUIPMENT

The panels are heavy. Use extreme caution when moving.


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Opening the door

1. Turn the unit disconnect handle to the OFF position before opening the front panel.2. Push the button and pull the handle gently outwards.3. Turn the handle downwards until the door opens.

Removal

1. Firmly hold the panel at the top and pull straight out.2. Lift and incline the panel outwards until it is completely removed.

NOTE: After removing the side panels, a protective internal panel blocks access to the inside of the unit.

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PANELMOUNTING


Internal Protection and Rear PanelsThe 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.

NOTE: Both the internal and the rear panels are fastened to the unit by screws.

NOTE: For rear return units, the rear panels are removed like the front panels.

Removal

1. Loosen the screws securing the panel.2. Firmly hold the panel.3. Incline the panel outwards until it is completely removed.

WARNINGELECTRICAL HAZARD

Do not remove rear panels if the equipment is operating.


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Unit Connections

Electrical Connections

NOTE: Air-cooled units are pressure activated. Low voltage connections between indoor unit and condenser are not required.

Connecting power to the unit

1. Use suitable equipment to check the grounding system efficiency.2. Ensure that the facility voltage and frequency correspond to those of the unit name plate.3. Ensure the main disconnect switch is in the OFF position. See “Main disconnect switch” on page 224. If locked, press the button on the door latch and rotate the handle downward to open the door.


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.

WARNINGQUALIFIED PERSONNEL ONLY

• Electrical connections from the unit to the power supply must ONLY be made by a licensed electrician.

• Electrical lines must be installed in compliance with all local and national codes.



5. Remove the cover from the main field wiring junction box.NOTE: Some units are ordered with Short Circuit Current Rating (SCCR) junction boxes.

6. See the wiring diagram attached to the equipment and connect the building power supply line to the terminal block inside the junction box.

Setting the unit power supply voltage

1. Verify that the appropriate voltage is set according to the nominal line voltage of the main input power supply.

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L1 L2 L3 GND

L1 L2 L3 GND

JUNCTION BOX STANDARD WIRING CONNECTIONS

SCCR WIRING CONNECTIONS

CUSTOMER POWER SOURCEFACTORY-WIRED

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460V 480V208V 230V 575V 600V


2. If necessary, modify the voltage on the selector.

Network ConnectionsThe microprocessor controller connects through the interface module to the Network Management Card (NMC), which is embedded in the touch display. The following connections are established at installation.

NOTE: Location of the interface module depends on type and model.

WARNINGMOVING PARTS

Do not operate unit with panels removed.


24VAC A-Link Com D1+D0-Modbus

Network Display

Display Interface

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TOP VIEW

A-LINK(NOT USED)

SIGNAL (FACTORY WIRED)

POWER(FACTORY WIRED)

INTERFACE MODULE LOCATION

HDMI PORTFOR DISPLAY CABLE

(FACTORY WIRED)

RJ-45 PORT FOR CUSTOMER NETWORK CABLE

BOTTOM VIEW


Drain ConnectionsThe condensate water drains from the tray through a 32 mm (1 1/4 in.) flexible tube fitted in the unit.

If the unit is equipped with a humidifier, ensure the humidifier connection is connected to the building drain.

See “Humidifier connections” on page 40 for information about connecting to building drains on units with a humidifier.

Connecting to building drains (without humidifier)

1. Connect the unit drainage tube to the building drains using a rubber or plastic tube with a 1 in. (25.4 cm) 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.

Item Description

Drain Trap Minimum slope

NOTICECOMPLIANCE REQUIREMENT

The installation must comply with local plumbing codes.


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2.5 cm PER 2.1 m(1 in. PER 10 ft)


Pressure Relief ValveAll DX units have a factory-installed pressure relief valve on the receiver. The pressure relief valve allows refrigerant to discharge during a fire or any situation that would result in the refrigerant system pressure exceeding the pressure rating of the relief valve. The pressure relief valve must be piped to the outside ambient air. When piping the valve, use Type L grade copper tubing (not supplied) and leave the exterior end open to the atmosphere and pointed away from any people or equipment. For details, consult local and national codes.

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LIQUID RECEIVER

PRESSURERELIEF VALVE

UNIT FLOORCUT-OUTS

FOR ROUTING

OUTLET


Refrigerant Piping ConnectionsAir-cooled DX units must be connected to a remote outdoor condenser. Systems with remote outdoor condensers must have discharge and liquid lines from the equipment to the condenser.

NOTE: Install all refrigerant lines in accordance with applicable industry guidelines as well as local and national codes and regulations.

General guidelines

• All refrigerant piping is type L ACR hard drawn copper pipes (soft copper is unacceptable).• All refrigerant lines/chilled water piping are free from debris.• All refrigerant lines should be as short and direct as possible.• All refrigerant piping joints must be made by brazing only; do not solder.

NOTE: The recommended brazing alloy is AWS A5.8 BCuP-5.• All refrigerant pipes are installed with proper supports and approved refrigerant line clamps.

NOTE: Isolate piping from structural surfaces using proper refrigeration/AC vibration clamps.

NOTE: When brazing field-installed copper refrigeration lines, use a nitrogen purge to minimize contamination of the refrigeration system during the brazing process.

Equivalent line length of fittings

Use the following table for reference when determining the total equivalent length of a pipe route.

NOTICEQUALIFIED PERSONNEL ONLY

• The laying the lines and the refrigerant 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.


ACR Tubing Size – mm (in.)

Type of Fitting/Valve—Equivalent Length of Pipe – m (ft)

Standard Elbow 45°

Standard Elbow 90°

Long RadiusElbow 90°

Reduced Coupling

Side OutletT

15.88 (5/8) 0.24 (0.8) 0.49 (1.6) 0.30 (1.0) 0.49 (1.6) 0.91 (3.0)

19.06 (3/4) 0.26 (0.9) 0.55 (1.8) 0.36 (1.2) 0.55 (1.8) 1.07 (3.5)

22.23 (7/8) 0.27 (0.9) 0.61 (2.0) 0.42 (1.4) 0.61 (2.0) 1.22 (4.0)

28.58 (1 1/8) 0.39 (1.3) 0.79 (2.6) 0.51 (1.7) 0.79 (2.6) 1.52 (5.0)


Discharge line sizing

Discharge lines must be sized such that refrigerant velocity in vertical lines is between 5 m/s (1000 ft/min) and 15 m/s (3000 ft/min). Refrigerant velocity in horizontal lines should be a minimum of 2.5 m/s (500 ft/min). Refrigerant velocity must be high enough to keep oil entrained to ensure the proper flow of oil throughout the system, in particular when operating at a partial load. If refrigerant velocity is too low, oil will not return to the compressor. If the refrigerant velocity is too high, both the noise level and pressure drop will increase. The acceptable pressure drops in discharge lines are up to 68.9 kPa (10 psi).

NOTE: Give consideration to the full and half load (or tandem) of the compressor to ensure that the operational range stays within these limits.

Horizontal discharge lines must be pitched downward at a minimum of 25.4 mm per 3048 m (1 in. per 10 ft) to ensure proper oil return.Trap the discharge line at the base of the vertical riser to prevent oil from returning back to the compressor during shutdown periods.

WARNINGHIGH TEMPERATURE RISK

Discharge lines must be insulated where contact could be made to avoid a contact burn.


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25.4 mm PER 3048 m(1 in. PER 10 ft)

5 m (16 ft)MAXIMUM

5 m (16 ft)MAXIMUM

15 m (50 ft)MAXIMUM

25.4 mm PER 3048 m

(1 in. PER 10 ft)

25.4 mm PER 3048 m(1 in. PER 10 ft)

5 m (16 ft)MAXIMUM


Calculating total discharge line size

Use the following guidelines to determine the diameter of pipe:

• Use the formula:Total equivalent length = Vertical line length + Horizontal line length + Equivalent length of fittings

• For pipes running in a downward vertical direction, select pipe size from the horizontal sizing table.

Discharge line size—vertical

• Calculate equivalent discharge line length in vertical direction.• Use the table below to determine pipe diameter for vertical pipes.

NOTE: Equivalent length in vertical direction cannot exceed 15 m (50 ft).

Discharge line size—horizontal

• Calculate equivalent discharge line length in horizontal direction.• Use the table below to determine pipe diameter for horizontal pipes.

NOTE: Equivalent length in horizontal direction cannot exceed 40 m (130 ft).

NOTICEMAXIMUM DISTANCE REQUIREMENT

• Total equivalent length should not exceed 40 m (130 ft).• For line lengths greater than 40 m (130 ft), contact Schneider Electric.


Equivalent length–m (ft)

Model

05110611 0921 1121 1422

162218222242 2542

28423342

8 (25) 5/8 in. 5/8 in. 5/8 in. 5/8 in. 5/8 in. 5/8 in. 3/4 in.

15 (50) 5/8 in. 5/8 in. 3/4 in. 5/8 in. 5/8 in. 3/4 in. 3/4 in.

Equivalent length–m (ft)

Model

05110611 0921 1121 1422

162218222242 2542

28423342

15 (50) 7/8 in. 5/8 in. 7/8 in. 7/8 in. 7/8 in. 7/8 in. 7/8 in.

30 (100) 7/8 in. 3/4 in. 7/8 in. 7/8 in. 7/8 in. 7/8 in. 7/8 in.

40 (130) 7/8 in. 3/4 in. 7/8 in. 7/8 in. 7/8 in. 7/8 in. 1 1/8 in.


Liquid line sizing

Liquid lines must be sized to ensure sufficient refrigerant flow to the expansion device and to minimize pressure drop.

NOTE: Excessively long liquid lines should be insulated from high ambient temperatures.

Refrigeration circuits

The refrigeration circuit from the factory is pre-charged with nitrogen. Prior to evacuation, a gross pressure test should be performed to identify any leaks.

Gross pressure test

1. Open any shut-off valves present in the system to ensure that all of the components will be tested.2. Pressurize the system to 17.2 bar (250 psi) with nitrogen. 3. Leave the system pressurized for 24 hours.4. After 24 hours, verify that no drop in pressure has occurred.

After verifying the absence of leaks from the system, perform the system evacuation.

System evacuation

1. Open any shut-off valves present in the system to ensure that all of the components will be evacuated.2. Connect a vacuum pump to the service ports on the system piping. Using a core removal tool may

reduce the time of the evacuation.3. Pull the first vacuum down to 750 microns, then isolate the system from the vacuum pump.4. Wait for an hour and check vacuum level. The vacuum should not rise above 1500 microns; if vacuum

level exceeds this level, check system for leaks.5. Break the vacuum with nitrogen. 6. Pull a final vacuum to below 500 microns. With the system isolated from the vacuum pump the system

should not rise above 500 micron for a minimum of 2 hours.NOTE: Install a ball valve before the micron gauge to prevent damage to the micron gauge during charging.

7. After completing the vacuum seal, charge the system with refrigerant.

Equivalent Length–m (ft)

Model

05110611

0921 1121 1422 162218222242

2542 28423342

15 (50) 5/8 in. 5/8 in. 5/8 in. 5/8 in. 5/8 in. 5/8 in. 5/8 in.

30 (100) 5/8 in. 5/8 in. 5/8 in. 5/8 in. 5/8 in. 7/8 in. 7/8 in.

40 (130) 5/8 in. 5/8 in. 7/8 in. 5/8 in. 5/8 in. 7/8 in. 7/8 in.

WARNINGQUALIFIED PERSONNEL ONLY

Charging and maintaining the refrigeration circuit must only be performed by qualified personnel.



Refrigerant charging

1. Calculate the total charge needed, using the reference table and formula:

2. Connect the refrigerant cylinder to the service ports.3. Break the vacuum by charging with liquid R410A.NOTE: Charge R410A as a liquid only.

Indoor Unit Charge + Liquid Line Charge + Condenser Charge = Total Charge

DXModel

Air-Cooled DX Indoor Unit Charge per Circuit – kg (lb) Twin-Cool with Air Cooled DX Indoor Unit Charge per Circuit – kg (lb)

Circuit 1(No Hot Gas Reheat),

Circuit 2

Circuit 1 (with Hot Gas Reheat),

Circuit 2

Circuit 1 (No Hot Gas Reheat)

Circuit 2

Circuit 1(No Hot Gas Reheat),

Circuit 2

0511 3 (6.6) 3.1 (6.8) 2.9 (6.4) 3.0 (6.6)0611 2.9 (6.4) 3.1 (6.8) 2.9 (6.4) 3.0 (6.6)0921 3.1 (6.8) 3.2 (7.0) 3 (6.6) 3.2 (7.0)1121 3.3 (7.3) 3.5 (7.7) 3.2 (7.0) 3.4 (7.5)1422 3.1 (6.8) 3.3 (7.3) 3.1 (6.8) 3.3 (7.3)1622 3.1 (6.8) 3.3 (7.3) 3.1 (6.8) 3.3 (7.3)1822 3.1 (6.8) 3.3 (7.3) 3.1 (6.8) 3.3 (7.3)2242 6.4 (14.1) 6.7 (14.7) 6.1 (13.4 6.5 (14.3)2542 6.3 (13.9) 6.7 (14.7) 6.1 (13.4) 6.5 (14.3)2842 N/A N/A 6.5 (14.3) 6.9 (15.2)3342 6.6 (14.5) 7 (15.4) N/A N/A

Liquid Line Refrigerant Charge

Size – in. Amount – kg/m (lb/ft)5/8 0.16 (0.11)7/8 0.33 (0.22)

Condenser Charge = Summer Charge + Additional Flooded Charge (if Low Ambient Kit is installed)

Schneider-Electric

Condenser Model

LuvataCondenser

Model

Summer Charge per

Circuitkg (lb)

Additional Flooded Charge per Circuit – kg (lb) Different Minimum Ambient Temperatures if Low Ambient Kit is Installed

4°C (40°F) -7°C (20°F) -18°C (0°F) -29°C (-20°F) -40°C (-40°F)

ACCD76050 ACCD76061ACCD76072

LCS5011-024-2CLCS5011-024-4C

LCS5011-024-4C-5751.24 (3.1) 0.8 (1.7) 0.8 (1.7) 1.0 (2.1) 1.0 (2.2) 1.1 (2.4)


LCS5011-032-2CLCS5011-032-4C

LCS5011-032-4C-5752.0 (4.5) 1.3 (2.8) 1.3 (2.8) 1.5 (3.2) 1.5 (3.3) 1.6 (3.6)

ACCD76052ACCD76063ACCD76074

LCS5011-039-2CLCS5011-039-4C

LCS5011-039-4C-5752.8 (6.1) 0.9 (1.9) 0.9 (1.9) 1.0 (2.1) 1.0 (2.2) 1.1 (2.4)


LCS5012-051-2CLCS5012-051-4C

LCS5012-051-4C-5753.0 (6.6) 1.0 (2.2) 1.0 (2.2) 1.2 (2.6) 1.2 (2.6) 1.3 (2.8)


LCS5212-067-2CLCS5212-067-4C

LCS5012-051-4C-5752.1 (4.7) 1.3 (2.9) 1.3 (2.9) 1.6 (3.4) 1.6 (3.4) 1.7 (3.7)


LCS5012-079-2CLCS5012-079-4C

LCS5012-051-4C-5752.9 (6.3) 1.7 (3.8) 1.7 (3.8) 2.0 (4.4) 2.0 (4.5) 2.2 (4.9)


LCS5213-099-2CLCS5213-099-4C

LCS5012-051-4C-5753.0 (6.7) 1.9 (4.1) 1.9 (4.1) 2.1 (4.7) 2.1 (4.7) 2.4 (5.3)


LCS5213-113-2CLCS5213-113-4C

LCS5012-051-4C-5754.1 (9.0) 2.4 (5.4) 2.4 (5.4) 2.9 (6.3) 2.9 (6.4) 3.2 (7.0)


LCS8212-015-2CLCS8212-015-4C

LCS5012-051-4C-5754.2 (9.3) 2.6 (5.7) 2.6 (5.7) 3.0 (6.7) 3.0 (6.7) 3.3 (7.2)


LCS8012-018-2CLCS8012-018-4C

LCS5012-051-4C-5755.4 (11.8) 3.7 (8.2) 3.7 (8.2) 4.2 (9.3) 4.2 (9.3) 4.7 (10.3)


LCS8013-022-2CLCS8013-022-4C

LCS5012-051-4C-5757.4 (16.4) 8.2 (18.0) 8.2 (18.0) 9.1 (20.0) 9.6 (21.1) 10.5 (23.1)


4. Charge to 80% of the calculated total. NOTE: If the system is not ready for commissioning, then apply only a holding charge and record the

amount charged.5. Start the compressor, and complete the charging process.NOTE: Perform a slow charge to avoid compressor damage.

Water Piping ConnectionsFor all water connections (except for the condensate drain):

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 avoiding air gaps (for example: Armaflex™ or

equivalent) to avoid condensation. The insulation must allow accessibility to the valves and three-piece joints.

5. Check that the water circuits are supplied with a maximum water pressure of 2068 kPa (300 psi). Install a safety valve with a setpoint of no more than 2068 kPa (300 psi).

NOTICEDRAINAGE REQUIREMENT

Draining the unit is recommended after prolonged inactivity.


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INOUT


Filling the Chilled Water Circuit

NOTE: The water used to fill the chilled water circuit must be filtered with a minimum 20 mesh stainless steel screen.

1. Before use, 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).3. Check that all unit bleed valves are closed.

NOTE: The location of bleed valves depends on the unit type and frame size.4. Open the isolation valves (field installed).5. Open the bleed valve and wait for the water to come out.6. Close the valve once all air is removed.7. Repeat step 5 and step 6, if necessary, to remove all air.

NOTICECHILLED WATER CIRCUIT REQUIREMENT

Filling the chilled water circuit must be done by a qualified mechanical contractor.


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BLEED VALVES


Energy Saver Units

Setup

Energy Saver units are connected to an outside fluid cooler and a pump. If the ambient temperature reaches the established setpoint, energy saving mode is activated. Whenever the difference between the room temperature and the ambient temperature is at least a 9°C (16°F), the fluid cooler will operate in winter mode with a 7.2°C (45°F) setpoint.

NOTE: Use only fluid-coolers and pump packages supported by Schneider-Electric.

NOTE: Use only #18 AWG for electrical connections from the unit to the fluid cooler and pump package.

NOTE: Maximum recommended distance to electrical connections from the unit to the fluid cooler and pump package is 152.4 m (500 ft).

NOTE: For cooling applications with multiple units and fluid coolers in a common loop, contact Technical Support for the appropriate interconnection wiring diagram.


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.

Item Description

Pump package Fluid cooler Ambient temperature sensor Electrical panel

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FIELD-SUPPLIED WIRING


Installation1. Install the outside ambient temperature sensor (stored inside the electrical panel) to an appropriate

location, carefully routing the shielded cable.NOTE: Maximum distance between the unit and the outdoor sensor is 30.5 m (100 ft).

2. Install water piping to the cooler and pump.3. Connect the wires from the fluid cooler the terminal block on the unit.

4. Secure the leaving water temperature sensor to the pipe with clamps, and wrap the sensor with ultra violet resistant insulation.

5. Connect the wires from the pump package to the terminal block on the unit.

LNC

1

LNO

1

LC1

24V

C

Sn1

C

Sn2

C

Sn3

5V

LNC

2

LNO

2

LC2

R1

R2

C450RCN-1C

970

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960

INSIDE INDOOR

UNIT

LEAVINGWATER

TEMPERATURE

960

970MASTER SENSOR

20

21

CR5

na4756a

53 63

INSIDEINDOOR

UNIT

TO TERMINAL BLOCK 53

INDOOR UNIT

TO TERMINAL BLOCK 63

INDOOR UNIT


Accessories

HumidifierComponents

Item Description Item Description

Steam outlet Water supply connections Supply water fill cup Water drain connection Humidifier cylinder Cylinder drain solenoid valve Water supply solenoid valve Condensate drain pan hose

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Humidifier connections

The humidifier installation requires connection to the water supply and drain lines.

NOTE: A factory-supplied threaded adapter and rubber hose are used to connect the humidifier to the piping on site.

Connecting to the drainage and water supply lines

1. Route the humidifier drainage line to the building drains using a rubber or plastic tube with a 1 1/4 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. Connect humidifier 3/4 in. hose bib connection to water supply line.4. Once the connections have been made, pour water into the unit condensate collection tray and in the

humidifier condensate collection tray until the trap is full.

Item Description

Drain line Trap Replaceable water cartridge filter (recommended) Isolation valve

WARNINGHOT 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.


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5° MINIMUM


Supply water

Use the values in the following table to determine the conductibility of the humidifier supply water.

NOTE: The recommended supply water pressure should be between 30–90 psig.

(1) Values dependent on the specific conductibility; in general: TDS @ 0.93 * s20; R180 @ 0.65 * s20(2) Not lower than 200% of the Chloride content in mg/l di Cl-(3) Not lower than 300% of the Chloride content in mg/l di Cl-

Description UnitsLimits

Minimum Maximum

Hydrogen ion activity pH 7 8.5

Specific conductibility at 20°C (68°F) σ R, 20°C (68°F) μS/cm 300 1250

Total dissolved solids TDS mg/l (1) (1)

Residual fixed at 180°C (356°F) R180 mg/l (1) (1)

Total hardness TH mg/l 100(2) 400

Temporary hardness mg/l 60(3) 300

Iron + manganese mg/l Fe + Mn 0 0.2

Chlorides 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, diluents, soaps, lubricants mg/l 0 0


Temperature and Humidity SensorInstallation

1. Insert a screwdriver in the slot and release the front cover of the sensor.2. Remove the lid and fasten the screws inside the sensor to the mounting location on the unit. 3. Connect the shielded cable to the appropriate terminals on the sensor, using the electrical diagram in

the unit as reference.

NOTE: Some cooling applications may require the sensor be mounted in the room apart from the unit. The recommended maximum distance between the sensor and the unit is 3 m (10 ft). Use only #18 AWG.

NOTICEELECTRIC STATIC DISCHARGE (ESD)

Apply ESD protection when handling the installed sensor.


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Worldwide Customer SupportCustomer 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.schneiderelectric.com (Corporate Headquarters)

Connect to localized Schneider Electric Web sites for specific countries, each of which provides customer support information.

– www.schneiderelectric.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.schneiderelectric.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 Electic 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.

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http://www.apc.com

http://www.apcc.com/support

http://www.apc.com/support/contact

http://www.apc.com/support/contact

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