Uniflair™ LE Cooling Units - APC - Country Selection … Safety During Maintenance Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 ... and local codes. R The walls,

Operation and Maintenance

Uniflair™ LE Cooling UnitsDirect Expansion, Twin-Cool, and Energy Saver60Hz

990-5255-001

Publication Date: June 2014

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

General Information...................................................................1

Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Warning for use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Document Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Save these instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Manual updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Cross-reference symbol used in this manual . . . . . . . . . . . . . . 2Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Commissioning............................................................................4

Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Initial inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Electrical inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Mechanical inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Display interface inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Start-up inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Final inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation......................................................................................7

Microprocessor Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

General features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Touch Screen Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Alarm LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Link-RX/TX (10/100) LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Display interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Using the path statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Calibrating the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Testing the annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Manual Start Up and Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Starting the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Shutting down the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Login/Logout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Uniflair LE Direct Expansion Operation and Maintenance Manual i

Unit Start Up Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Overview Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Home screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Adjusting parameters using display controls . . . . . . . . . . . . . . 14Activating cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Stopping the cooling unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Environmental Controls ..........................................................16

Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Humidify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Dehumidify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Reheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Ambient Temperature Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

DX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Twin-Cool Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Energy Saving Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Units with a humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Sensor Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

General Unit Configuration ...................................................23

Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Unit Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Chilled water circuit configuration . . . . . . . . . . . . . . . . . . . . . . 24Energy saving unit configuration . . . . . . . . . . . . . . . . . . . . . . . 24Twin-Cool unit configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Heating and Humidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Dehumidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Microprocessor controller connections . . . . . . . . . . . . . . . . . . 27Group configuration settings . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ii Uniflair LE Direct Expansion Operation and Maintenance Manual

Weekly Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Sleep Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Automatic Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Standby Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Relay Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Relay Normal State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Display Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Language, date, and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Screen visibility and audible tones . . . . . . . . . . . . . . . . . . . . . 34Add a new user or edit an existing user . . . . . . . . . . . . . . . . . 34

Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Configure the network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Restore Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Modus TCP/IP: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Unit Information ........................................................................37

About . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

About the cooling unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37About the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Counters/Run Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Run Hours Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Run Hours Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Cycle Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Cycle Counters Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

View event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Export Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Viewing Status...........................................................................41

Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Uniflair LE Direct Expansion Operation and Maintenance Manual iii

Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

DX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Circuit 1/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Chilled Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Alarm Messages and Actions...............................................44

Settings and Adjustments......................................................49

Nominal Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Air-cooled and Water-cooled DX Units 208–230V/3Ph/60Hz . 49Twin-cool and Energy Saver DX units 208–230V/3Ph/60Hz . 50Air-cooled and Water-cooled DX units 460V/3Ph/60Hz and 575V/3Ph/60Hz 50Twin-cool and Energy Saver DX units 460V/3Ph/60Hz and 575V/3Ph/60Hz 51

Calculating External Static Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Units without electrical heaters . . . . . . . . . . . . . . . . . . . . . . . . 51Units with electrical heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Setting Regulation and Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . .55

Setting the air flow sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Setting the clogged filter sensors . . . . . . . . . . . . . . . . . . . . . . 57Service Settings Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Maintenance ..............................................................................58

Safety During Maintenance Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Quarterly Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Semi-Annual Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Annual Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Replacing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

iv Uniflair LE Direct Expansion Operation and Maintenance Manual

General Information

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.

1Uniflair LE Direct Expansion Operation and Maintenance Manual

Electrical safety

Warning for use

Document OverviewThis manual supplies general operation and basic maintenance information for Uniflair LE Direct Expansion, Twin Cool, and Energy Saver cooling 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 and images in this manual are examples only and may differ from your environment. The characteristics of special-order units may differ from those described in this manual.

Save these instructions

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

Manual updates

Check for updates to this manual on the Schneider Electric Web site, http://www.schneider-electric.com. Select Support > Documents and downloads, and enter the manual part number or SKU for your equipment in the search field. See the back cover of this manual for the part number.

Cross-reference symbol used in this manual

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

DANGERHAZARD 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.

WARNINGHAZARD 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.

CAUTIONDAMAGE 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.

Failure to follow these instructions can result in equipment damage.

Uniflair LE Direct Expansion Operation and Maintenance Manual2

Abbreviations

The following abbreviations are used throughout this manual to refer to the different types of cooling units:

• DX: Direct Expansion• ES: Energy Saving• TC: Twin-Cool

Additionally, the following abbreviations appear on display interface screens:

• CW: chilled water• EXV: electronic expansion valve• CPY: humidifier control terminal


Commissioning

After installation, complete the following checklists to verify that all components are working properly and that the equipment is ready to begin operation.

ChecklistsInitial inspection

The initial inspection ensures that the equipment has been properly installed, the location of the cooling unit has been properly prepared, and the cooling unit is free of damage.

The room vapor barrier minimizes moisture infiltration. Without a vapor barrier, it will be difficult to maintain the humidity in the room.

Do not introduce unconditioned outside air into the space.

Electrical inspection

The electrical inspection verifies that all electrical connections are secure and correct and that the cooling unit is properly grounded.

Ensure that

R The installation procedure is complete according to the requirements of this installation manual and local codes.

R The walls, floor, and ceiling of the room where the cooling unit is located are sealed with a vapor barrier.

R There is no evidence of damage to the cooling unit.R Clearance around the equipment is in accordance with ASHRAE, local, and national codes as

well as this installation manual.R The cooling unit is level and secured to a floor stand or sub base.R Room humidity is below 60% relative humidity, and room construction is complete.R If applicable, the chilled water piping is complete and the chiller is operational for Twin-Cool

units.R If applicable, the heat rejection piping is complete, and heat rejection equipment is operational.


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

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

• The equipment must be connected to an earth ground.


Ensure that

R Incoming voltages match the phase and voltage rating on the nameplate.R Equipment is properly connected to an earth ground.R Internal electrical components and terminal blocks do not have any loose connections.R Electrical connections are tight, including controllers and auxiliary devices.R The primary and secondary power feeds are properly connected.


Mechanical inspection

The mechanical inspection verifies that all mechanical components and connections are secure.

Display interface inspection

The display interface inspection verifies that the sensors and internal communication links of the cooling unit are installed properly.

R Circuit breakers are correct and securely attached to the DIN rail.

NOTICEPROPER INSTALLATION

Ensure all piping is properly installed to avoid improper operation or damage to cooling unit or surrounding equipment.

Failure to follow these instructions can result in equipment damage.

Ensure that

R The condensate drain line is the size of the drain connection and has proper slope away from the unit.

R Mechanical connections are tight. R Chilled water piping is insulated.R A particulate strainer is installed in the water supply piping.R Both CW and refrigeration piping do not have any leaks. R If applicable, external chilled water isolation valves are open.R Air is bled from the system. If air remains in the system, bleed it out now.R If applicable, supply water temperature is recorded.R Room conditions and relative humidity comply with the operating guidelines before starting the

equipment.R Humidifier water-supply piping is connected and is the correct sizeR Refrigerant piping size is correct according to the line-size table in the installation manual.R Vertical, horizontal, and total run lengths are recorded for liquid and discharge linesR Number of 45- and 90-degree ells in the refrigerant piping are recorded.R Field-installed traps and piping are in accordance with the installation manual and follow proper

piping practices.R A proper vacuum and charge has been performed on the unit.R Refrigerant piping is adequately supported and isolated when necessary.R Field-installed service valves are open.R Piping in the building and on the roof is properly insulated.R Relief valve piping is installed in accordance with ASHRAE standards.R Condenser fans are turning freely and that the blades are not distorted or bent.

Ensure that

R Group communication and network wiring connections are complete.R Input contacts and output relays are connected correctly.R Building management system port is connected properly.R The network port is connected correctly and an IP address has been assigned to the cooling unit.R Protective materials are removed from the user display.

Ensure that


Start-up inspection

The start-up inspection ensures that the cooling unit is operating properly after the initial start-up. This inspection verifies that all modes of operation are working correctly and that the cooling unit is ready for normal operation.

Final inspection

The final inspection verifies that the system is clean and the start-up form has been sent to Schneider Electric.

R Display interface is working properly. The LCD backlight, LEDs, and alarm tone will perform a self-test when power is applied to the unit.

While the equipment is operating, ensure that

R The cooling unit is free from malfunctions, including water leaks, refrigeration leaks, unusual vibrations, or other irregularities in each mode of operation.

R Air filters are clean and free of debris. Replace air filters if necessary.R If applicable, perform an air balance to verify that the fans are set to the desired fan speed.R If equipped, the condensate pump is working properly by adding fresh clean water to the

condensate pan and checking pump operation.R Temperature and humidity sensors are working properly.R If applicable, water leak detection has been tested and is working properly.R If applicable, the air pressure differential sensor has been tested and is working properly

Ensure that

R Interior and exterior of the equipment are clean and free from debris.R Packaging materials are disposed of properly.R Start-up form is filled in and sent to Schneider Electric.R Customer is trained on the user display and is able to view active alarms and status readings.R The customer is given the technical support contact number applicable for their region.

Ensure that


Operation

Microprocessor ControllerGeneral features

The microprocessor controller manages unit operation. The controller consists of the following components:

• Microprocessor control located inside the electrical panel• Touch screen display on the unit

The controller contains the settings and operating parameters that can be set and viewed on the display interface.

The control system has the following functions:

• Temperature and humidity control based on setpoints programmed on the display interface• Ability to set dual setpoints for temperature control• Complete alarm signaling system• Ability to record alarms• Configuration of alarm signal contacts on the display interface• Programming of automatic restart after power is restored• Remote unit switch on/off • Control compressor sequencing to guarantee efficiency and reliability• Regulation of the electronic expansion valve and alarm signaling• Two levels for password (main and service)• Control of clock/date• Calculation of operating hours and cycle times of major components• Operating scheduling times for switching the units on/off: weekdays, weekends and holidays• Local network management with optional programming the rotation of one or two stand-by units and the

operation of these units setback mode settings based on average temperatures• Override function that allows manual control of major components without excluding remote control


Touch Screen Display

Alarm LED

This LED indicates active alarms on the display.

Item Description Function

LCD display 7-inch touch-screen color display.

Power LED The cooling unit 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.

Link-RX/TX (10/100) LED Displays current network link status.

Display Reset button Resets the display microprocessor. This has no effect on the air conditioner controller.

Micro SD card slot Memory card expansion slot.

Service port USB-B port used only by service personnel.

USB-A port Supports firmware upgrades.

Serial Configuration port Connects the display to a local computer to configure initial network settings or access the command line interface (CLI).

Condition Description

Off No AlarmsSolid yellow Warning AlarmSolid red Critical Alarm

DisplayReset

MicroSD

ServicePort

USBConsole

10/100

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Status LED

This LED indicates the status of the display.

Link-RX/TX (10/100) LED

This LED indicates the network status of the display.

Display interface

The display interface main screen displays the system state information.

• Unit number in the LAN network• Room temperature and the percentage of humidity (dehumidification or humidification option must be

included to read humidity percentage)• Information regarding unit status


Off One of the following situations exist:• The display is not receiving input power.• The display is not operating properly. It may need to be

repaired or replaced. Contact Schneider Electric Customer Support.

Solid green The display has valid TCP/IP settings.Solid orange A hardware malfunction has been detected in the display.

Contact Schneider Electric Customer Support.Flashing green The display does not have valid TCP/IP settings.Flashing orange The display is making BOOTP requests.Alternately flashing green and orange

If the LED is flashing slowly, the display is making DHCP requests.If the LED is flashing rapidly, the display is starting up.


Off One or more of the following situations exist:• The display is not receiving input power.• The cable or device that connects the cooling unit to the

network is disconnected or not functioning properly.• The display itself is not operating properly. It may need

to be repaired or replaced. Contact Schneider Electric Customer Support.

Solid green The display is connected to a network operating at 10 megabits per second (Mbps).

Solid orange The display is connected to a network operating at 100 Mbps.

Flashing green The display is receiving or transmitting at 10 Mbps.Flashing orange The display is receiving data packets at 100 Mbps.


Using the path statement

Select the main- and sub-screen options specified in the path statement to view or configure a setting. The path statement lists the main- and sub-screen options you select to navigate to the setting you want to view or modify. The parts of the path statement are defined in the following example:

Path: Main > Status > Temperature

Main > Your starting point is the main screen.

Status > Select this option from the main screen.

Temperature > Select this option from the sub-screen.

Subsequent options are listed and defined under the path statement.

NOTE: The screens available for display are dependent on the model, type, and configuration of the unit.

Calibrating the display

Path: Main > Tests > Display Calibration > Calibrate

Use this screen to calibrate the touch screen by touching the center of the box that appears on the screen. When you are satisfied with the calibration, let the timer run down to zero.

Testing the annunciators

Path: Main > Tests > Annunciators

Use this screen to test the annunciators by touching the center of the box that appears on the screen.


Manual Start Up and Shut DownStarting the unit

1. Verify that the door and the front panels are closed.2. Turn main disconnect switch to ON.

3. Press the Home icon. From the Home Screen on the display interface, select Unit On/Standby.4. Select ON and press OK.

NOTE: The display interface automatically turns on when the unit power switch is turned to the On position.

If an alarm is indicated, see “Alarm Messages and Actions” on page 44.

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Shutting down the unit

1. On the Unit On/Standby screen, press On/Standby and select Standby. 2. Press OK.3. Power down the unit by turning the main disconnect switch to the OFF position.

Login/Logout Path: Main > Login/Logout

The Home button visually changes to signify that a user is currently logged in.

Once the password is entered, user login remains active until the period of inactivity exceeds the Auto Logoff setting.

AccessThe Uniflair LE display requires password verification before settings can be altered on the unit. You can log in from the main screen by selecting Login. While it is not required to log in to view unit configurations, it is required to make any changes. If the password was not entered from the Login screen on the main screen, you will be prompted to enter the password when attempting to change a setting. The unit default password is 1234.

Unit Start Up ConditionsThe following operations must be performed before the unit can start cooling operations:

• Check that the Power LED on the display interface to verify that the unit is powered.• Check that the Alarm LED on the display interface is off (no alarms should be active).• Check that the unit is ON when powered up, or, alternately:

– Check that the unit is started when the remote ON/OFF digital input ID2/4/6 contact is closed.– Check that the unit is started by an external supervisory system.– Check that the unit is started by the daily or weekly time schedules.

Symbol Description

Home when the system is locked.

Home when the system has been unlocked.


Overview Screen

After start-up, the display shows an overview screen containing basic status information. Press Home to go to the Home screen. After a period of inactivity, the display reverts back to the overview screen.

Home screen

At any time during operation, press the Home icon to return to the Home screen. To view active alarms, press Alarms. The Alarms image changes based on the current state of the display.

HOME ALARMS


Adjusting parameters using display controls

To view a sub-screen, select an option from the main screen. Continue this process until the appropriate screen is active. During navigation, the current file path is displayed at the top of the screen. Up to four screen headers can be displayed at one time. Pressing on any of the headers reverts the display to the specified screen.

• First: Go to the first screen in a series of screens.• Back: Go back one screen in the series.• Screen Number: Indicates which screen in the series.• Forward: Go forward one screen in the series.• Last: Go to the last screen in the series.

Activating cooling

Path: Main > Unit On/Standby

1. Press On/Standby, and select ON. 2. Press OK.

NOTE: The display interface automatically turns on when the main disconnect switch is turned to the ON position.

The cooling unit will run according to the configured settings.

NOTE: On/Standby only affects the local cooling unit. You must set the Unit On/Standby option for each unit in the cooling group.

The user must be logged in to gain access to the screens on the display interface. If you are not logged in, a prompt will appear for you to enter your password.

FILE PATH

FIRST BACK SCREEN

NUMBERFORWARD LAST


Automatic Mode

Turn on the unit by the following methods:

• Remote On/Off contact• External supervisory system• Timer• Unit Rotation Timer

If the unit is programmed to setback mode, it will automatically turn on when temperature limits are exceeded.

Stopping the cooling unit

Path: Main > Unit On/Standby

1. Press On/Standby.2. Select Standby, and press OK.3. If not logged in, a prompt will appear for you to enter your password.

The On/Standby status will now display Standby.


The Standby option does not remove power from the cooling unit. You must disconnect power at the mains to remove power from the cooling unit.



Environmental Controls

Modes of Operation Cooling

The cooling unit is equipped with compressor cycling control that tries to minimize the number of times the compressor cycles on and off. Once off, the compressor will not normally cycle on until the return temperature reaches its setpoint. Compressor cycles are monitored by configuring Counters/Run Hours parameter. If the number of cycles averages more than the configured number per hour over that period, the Excessive Compressor Cycling alarm is activated.

Humidify

The humidification output is determined by the difference between the humidity setpoint and the cooling unit return air humidity (with humidification output increasing as the return air humidity decreases).

Dehumidify

The cooling unit dehumidifies if the humidity is above the dehumidify setpoint and the cooling unit cooling demand is being met. The dehumidification output is determined by the difference between the dehumidify setpoint and the cooling unit return air humidity.

Reheat

When enabled, reheat is used as needed to provide stable cooling at a lower heat load than is possible with cooling alone. Reheat increases the effective heat load to the cooling unit, which allows the compressor to avoid cycling off. The return air temperature may be low while the unit is dehumidifying or if data center equipment is off and the environment is relatively cold. Reheat output is determined by the difference between the reheat setpoint and the cooling unit return air temperature (the reheat output increases as the return air temperature decreases).


Ambient Temperature DiagramsDX Units

100%

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R2

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Twin-Cool Units

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Energy Saving Units

100%

100%

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Units with a humidifier

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30%

60%

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80%

50%

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SetpointsPath: Main > Setpoints

Use these screens to adjust setpoints. A setpoint is the target value that a cooling unit will maintain in the environment. The default setpoints are appropriate for most cooling applications.

NOTE: Temperature related settings are stored internally in tenths of degrees Celsius. Since tenths of degrees Celsius do not have as much resolution as tenths of degrees Fahrenheit, a minor loss of accuracy will occur at some values when configuring temperature settings in Fahrenheit.

• Return Air Setpoint: 17–35°C (62.6–95°F)• Return Air Temperature Sensitivity: Delta 0.5–9.9°C (0.9–17.8°F)• Humidification Setpoint Relative Humidity: RH%• Humidification Proportional Band Relative Humidity: RH%• Dehumidification Setpoint Relative Humidity: RH%• Dehumidification Proportional Band Relative Humidity: RH%• Reheat Setpoint: 12–30°C (53.6–86.0°F)• Heating Sensitivity: 0.5–9.9°C (0.9–17.8°F)• Second Reheat Setpoint: 12–30 °C (53.6–86.0°F)• Setpoint External Offset Temperature Range Start: 0–12 °C (32–53.6°F)• Setpoint External Offset Temperature Range End Delta: 0–12°C (32–53.6°F)• Supply Air High Temperature Alarm Enabled: Yes/No• Setpoint External Offset Voltage Range Start: 0–10V• Setpoint External Offset Voltage Range End: 0–10V• Second Return Air Setpoint: 17–35°C (62.6–95°F)• Offset Setpoint Anti-Hunt Time: 0–30 minutes


Sensor Offsets Path: Main > Configuration > Unit > Sensor Offsets

Use these screens to adjust sensor offsets. When the reading between the unit sensor and a calibrated sensor differs, fine tune the unit sensor to match the calibrated sensor by setting the sensor offset to the difference between these readings. The offset value remains constant as the ambient temperature increases or decreases.

For example, if the unit sensor reads ambient temperature of the room at 20°C (68°F) and the calibrated sensor reads the actual ambient temperature at 22°C (71.6°F), then the offset value would be +2°C (3.6°F). If the ambient temperature changes, then the unit sensor includes the offset in its reading.

• Return Air Temperature Sensor Offset: -9.9–9.9°C (-17.8–17.8°F)• Supply Air Temperature Sensor Offset: -9.9–9.9°C (-17.8–17.8°F)• Return Air Relative Humidity Sensor Offset: -20–20 RH%• Circuit Entering Chilled Water Temperature Sensor Offset: -9.9–9.9°C (-17.8–17.8°F)• Circuit Leaving Chilled Water Temperature Sensor Offset: -9.9–9.9°C (-17.8–17.8°F)• Outdoor Temperature Sensor Offset: Delta -9.9–9.9°C (-17.8–17.8°F)• Hot Water (Reheat) Temperature Sensor Offset: Delta -9.9–9.9 °C (-17.8–17.8°F)


General Unit Configuration

The unit typically ships pre-configured from the factory. To change any of the settings, you must have an access code.

NOTE: Set cooling group configuration options during the commissioning of the unit in the cooling group.

NOTE: Only qualified service personnel can make changes to these settings.

NOTE: Some display items may not be available depending on the configuration of the unit.

Digital InputsPath: Main > Configuration > Unit > Digital Inputs

Use these screens to configure digital inputs. Each input includes the following parameters:

• Configuration: Indicates how the input is being used.• Function: Indicates what the controller should do when the input state changes.• Normal state: Indicates if the normal state of the input contact is open or closed.

NOTE: First verify that multifunction inputs have not been previously configured.

If optional kits are installed, use these screens to activate digital inputs. The kits include fire and smoke sensors, smoke and fire relays, and water detection sensors.

• Digital Input 2:– Water detection– Remote ON/OFF – Change Setpoint– User Configuration

• Digital Input 4:– Smoke-Fire sensor– Remote ON/OFF – Change Setpoint– User Configuration

• Digital Input 6: – External limit sensor– Remote ON/OFF – Change Setpoint– User Configuration

User Configuration options:

• Alarm signaling: Generates an alarm when the input state changes.NOTE: This option is only used when the User Configuration screen is selected.

• DX/CW switch-over: Changes over the operating mode of the unit (TC models only)• Emergency working: Sets up an input signal from an outside component, such as a UPS, to trigger the

units to run only certain components as defined below.– Fan Enabled During Emergency Working Mode: (Y/N)– Compressor Enabled During Emergency Working Mode: (Y/N)– Humidifier Enabled During Emergency Working Mode: (Y/N)– Heaters Enabled During Emergency Working Mode: (Y/N)


AirflowFan

Path: Main > Configuration > Unit > Airflow > Fan

• Fan Speed: Sets fan speed.• Fan Off Delay: Sets delay for turning off fan.

Damper

Path: Main > Configuration > Unit > Airflow > Damper

• Motorized Damper: Enable/Disable operation of the damper.• Motorized Damper Opening Time: Set the damper opening time within a range of 20–300 seconds.

During this period, the start of the fan and the air flow alarm are delayed.• Motorized Damper Output Contact Normal State: Select the contact state (Normally Open/Closed)

for the damper.

Unit TypesChilled water circuit configuration

Path: Main > Configuration > Unit > Chilled Water

NOTE: Twin-Cool units only.

• Force Chilled Water Valve Position on High Chilled Water Temperature: Enable/Disable automatic change of the chilled water valve position when high CW temperature setpoint is exceeded.

• Circuit 1 CW Valve Position during CW High Temperature Threshold Exceeded Alarm: Sets the range 0–50 (%) of the CW valve position if temperature threshold is exceeded.

Energy saving unit configuration

Path: Main > Configuration > Unit > Energy Saving

• Indoor/Outdoor Delta Temperature for Winter Mode: Selects temperature delta setpoint within a range of 3–15°C (5.4–27°F) at which the ES unit triggers the dry cooler to change into Winter mode.

• Return/Water Delta Temperature for Energy Savings Mode: Use to select the temperature delta setpoint within a range of 3–15°C (5.4–27°F) at which the ES unit goes into Energy Saving mode.

• Dry Cooler Control Type: Selects the type of control (On/Off or Modulating signal) of the dry cooler.• Dry Cooler Summer Temperature Setpoint: Selects the dry cooler summer mode setpoint 15–40°C

(59–104°F) when using Modulating signal control.• Dry Cooler Winter Temperature Setpoint: Selects dry cooler winter mode setpoint 5–24°C

(41–75.2°F) when using Modulating signal control.


Twin-Cool unit configuration

Path: Main > Configuration > Unit > Twin-Cool

Use these screens to configure the activation point between DX and CW cooling on a TC unit.

To avoid continuously alternating between the two operating modes, there is a minimum interval of 30 minutes between two consecutive activations of the cold water valve.

If the high room temperature limit is exceeded (default: 30°C, 86°F), the unit automatically switches from CW to DX operation, signaling the High cold water temperature or Valve Fault alarm.

These screens are only available in the Twin-Cool model. The screens are used to configure Twin-Cool operations, such as enabling CW operation only if the alarm is activated in DX mode or through one of the multi-functional digital inputs or by a Building Management System (BMS).

• Preferred Cooling Mode: Select the normal cooling mode (DX/CW).• Chilled Water Active on DX Alarm: Enable/Disable CW mode activation when a DX alarm is triggered.• Chilled Water Active only on Input Contact: Enable/Disable CW mode activation when the

configured input contact changes state.

For details, see “Digital Inputs” on page 23.

• Chilled Water Active only through Serial Communication: Enable/Disable CW mode activation through a serial communication device.

• Chilled Water Threshold to Start Chilled Water Cooling: Set the CW temperature threshold4–15°C (7.2–27°F) at which CW cooling is activated.

• Chilled Water Mode Activation Deadband: Sets the CW temperature deadband to prevent excessive cycling between CW and DX cooling.

Heating and Humidification Humidifier

Path: > Main > Configuration > Unit > Heating and Humidification > Humidifier

Use these screens to manage operation of the humidifier.

• Humidifier 0–10V Settings Integral Time: Sets the integral time between 0–-999 seconds.• Reset cyl. Life: Resets the humidifier cylinder life counter after replacing the humidifier cylinder.• bE Total periodical drain every: Selects the duration of time (1–240 hours) of a periodic draining of the

humidifier.

CW VALVE

CW SETPOINT: DEFAULT 7°C(44.6°F)

COMPRESSOR

WATER CLOSED CIRCUIT

DIFFERENTIAL

FIXED: 3°C (5.4°F)


• bF Days for inactivity flush: Selects the duration of time (1–99 days) of inactivity when the humidifier flushes.

• Manual Drain: Drains the humidifier manually.• bb Time limit maintenance: Sets the time period (0–4000 hours) for the humidifier for maintenance

alarm.• Reset active alarms: Resets the active alarms for the humidifier.• b4 Conduct: Sets the conductivity limit (0–1250 uS/cm) of humidifier water supply.• b5 Conductivity warning: Sets a warning for the conductivity limit (0–2000 uS/cm) of the humidifier

water supply.• b6 Conductivity alarm: Sets an alarm for the conductivity limit (0–2000 uS/cm) of the humidifier water

supply.

Dehumidification

Path: Main > Configuration > Unit > Heating and Humidification > Dehumidification

• Dehumidification Control: Enable/Disable control of dehumidification.• Fan Speed During Dehumidification: Sets the desired fan speed during dehumidification.• Chilled Water Threshold to Start Dehumidification: Sets the threshold between 5–20°C (41–68°F) at

which dehumidification is enabled (Twin-Cool units only).• Change Chiller Setpoint During Dehumidification: Enables digital output DO4 to close during

dehumidification in order to trigger the chiller to lower the water temperature.

Heater

Path: Main > Configuration > Unit > Heating and Humidification > Heater

NOTE: these settings are only available for units with hot water reheat.

• Minimum Water Temperature for Hot Water Reheat: Sets minimum the water temperature between 25–60°C (77–140°F) for hot water reheat.

GroupOverview

Up to 10 units installed in the same room can be connected in a local network to manage the environmental conditions as a group.The following guidelines describe group configurations:

NOTE: Units in a network can be connected at a maximum of 500 m (1640 ft).

NOTE: All units connected to the network must have the same version of flash memory on the board.

To communicate on the local network, the units are configured so that each of them can communicate the information necessary to operate correctly. To achieve normal operation, the separate units must be correctly addressed (1,2,3...10). Electrical connections must be completed step by step.

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Microprocessor controller connections

In the figure below, a connection is shown for one microprocessor controller of the pLAN network, using a shielded cable with two twisted pairs and a shield. The cable is connected to all of the board in a series through the J11 terminal.

Connect the shield to the ground (GND) on the first unit at a metal point using a screw and a washer. The length of the shield should be as short as possible.

WARNINGNETWORK POLARITY REQUIREMENT

• The RX/TX+ of one board must be connected to the RX/TX+ of the other board; the same applies to RX/TX- and the GND.

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

Board Terminal Cable ConnectionGND First couple (both wires)Rx+ / Tx+ Second coupleRx- / Tx- Second couple

J11 pLANTx/Rx GND

C1

NO

1

NO

2

NO

3

C1 C4

NO

4

NO

5

NO

6

C4 C7

NO

7

C7

NO

8

C8

NC8

NO

12

C12

NC1

2

NO

13

C13

NC1

3C9

NO

9

NO

10

NO

11 C9

G G0

U1

U2

U3

GN

D

+VD

C

+Vte

rm

GN

D

+5 VR

EF

U4

GN

D

U5

GN

D

VG VG0

Y1 Y2 Y3 Y4 ID1

ID2

ID3

ID4

ID5

ID6

ID7

ID8

IDC1

U6

U7

U8

GN

D

ID9

ID10

ID11

ID12

IDC9

ID13

H

ID13

IDC1

3

ID14

ID14

H

J1 J24 J2 J3 J4 J5 J7 J8

J14

J10

J13J12 J16 J17 J18J15

J6

J11 pLAN

J25 BMS2 J26 FBus2

4 3 2 1

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Setting the LAN address.

1. On the microprocessor controller, use a screwdriver to press and hold the A button. Wait 2–5 seconds, the display flashes and the IP address appears. After releasing the button, the display clears.

2. To change the address, continue pressing the button on the controller until the correct address displays, then remove the screwdriver.

3. When the address starts flashing quickly on the display, the address is saved.4. Power cycle the controller to activate the selected address.

Group configuration settings

Path: Main > Configuration > Unit > Group

NOTE: These settings should all be done on the unit with LAN address 1. This applies to all settings except Sensor Values Used and Exclude from Rotation.

• LAN Address: Displays the LAN address for the unit.• Number of LAN Units: Specifies the number of cooling units in the group. A minimum of 1 and

maximum of 2 standby units are possible.• Automatically Switchover to Standby Unit: Enables unit rotation within the group based on time and/

or alarm conditions.• Number of Standby Units: Specifies the number (1, 2) of standby units.• Sensor Values Used: Select if Local Values (per individual unit) or Mean Values of sensor readings are

used to control environment.• Delta Temperature to Switch to Local Control: Sets the delta temperature between 0–9.9°C (0–

17.8°F) point between local and group mean values at which local sensor readings is used.• Unit Rotation Time: Sets the time (0–999 hours) at which cooling operations are rotated to another unit

in the group. If 0 hours is chosen, the test mode is activated, which rotates the standby unit every 2 minutes.

• Rotate to Standby Unit Only on Alarm: Enable/Disable rotation of cooling operations from the unit to a standby unit only when a specified alarm is triggered.

• Exclude from Rotation: Selects which units to Include/Exclude the local unit from rotation.• Switchover Mode: Sets the rotation mode. Selecting Cycle will rotate the units based on the Unit

Rotation Time. Selecting Clock will rotate the units based on the Number of Days.• Switchover On Power Loss: Enable/Disable for switching over to the standby unit in the event of a

power loss to an active unit.• Number of Days Between Rotation: Selects number of days between rotation of units in a group.• Hour of Rotation: Selects the hour of the day (0–23) at which the rotation occurs.• Minute of Rotation: Selects the minute (0–59) of the hour at which the rotation occurs. • Rotation Weekday: Selects the day (Monday, Tuesday, Wednesday, Thursday, Friday, Saturday,

Sunday) on which the rotation occurs. This option is only used if Number of Days Between Rotation is set to 7.


Weekly ProgramPath: Main > Configuration > Unit > Weekly Program

The Programmed Cycle automatically starts up and shuts down the unit according to time bands (up to 3 on/off daily cycles, each with start up and stop time): a weekly cycle divided into regular days N (Monday through Friday), a Pre-holidays (Saturday), and holidays (Sunday). The shut-off periods allow for maintenance.

Set up the Programmed Cycle by selecting the time band and pressing On to start the cycle and Off to stop it.

Time Bands:

• Regular Days: Monday/Tuesday/Wednesday/Thursday/Friday• Saturday/Pre-holidays• Sunday/Holidays• 1/2/3 hours (0–23 hours)• 1/2/3 minutes (0–59 minutes)

Sleep ModeSleep Mode allows a standby unit to activate and take control of room conditions. The activation from Sleep Mode is not influenced by signals from remote systems but instead programmed according to environmental conditions. The activation of a unit from Sleep Mode is not considered an alarm situation. This mode can also be used in Cooling Assist mode in conjunction with grouping to allow a standby unit in the group to activate when the cooling demand is not met.

Path: Main > Configuration > Unit > Sleep Mode

• Sleep Mode: Enable/Disable sleep mode.• Sleep Mode Cooling Setpoint: Sets the temperature between 20–35°C (68–95°F) at which the unit

activates from standby to begin cooling. The unit will resume normal operation after the temperature reaches the cooling setpoint minus 2°C (3.6°F) and a minimum of 15 minutes has elapsed.

• Sleep Mode Heating Setpoint: Sets the temperature between 5–20°C (41–68°F) at which the unit activates from standby to begin heating. The unit will resume normal operation after the temperature reaches the heating setpoint plus 2°C (3.6°F) and a minimum of 15 minutes has elapsed.

• Sleep Mode Fan Cycle: Turns the fan on at a specified time in order to provide airflow across the temperature sensor which results in a more accurate temperature reading.

• Sleep Mode Fan Cycle Time: Sets the time interval for how often the fan is cycled on during Sleep Mode.(15–99 minutes).

• Sleep Mode Dehumidification Setpoint (%RH): Sets the humidity (50–99%) at which the unit activates from standby to begin dehumidification.

• Sleep Mode Humidification Setpoint (%RH): Sets the humidity (20–60%) at which the unit activates from standby to begin humidification.

NOTE: Humidity settings only available with optional humidity sensor.


Communication Use these screens to configure an optional serial interface board, which is used to connect the unit to a BMS.

For details about setting up serial boards, see the Uniflair™ LE Accessories Manual.

Path: Main > Configuration > Unit > Communication

• BMS 1 Serial Address: Specify the serial address of the board.• BMS 1 Serial Speed: Select the speed (baud rate) from 1200, 2400, 4800, 9600, 19200, 38400.• BMS 1 Serial Protocol: Select from Standard, Modbus, Modem GSM, Master AF• Remote On/Off Only through Serial Communication: Enable/Disable the Remote On/Off through

serial communication.

SystemPath: Main > Configuration > Unit > System

• Startup Delay: Set up the start-up delay to restart equipment sequentially in your room after a power event. The delay begins after power is restored and the cooling unit is initialized. The cooling unit cannot begin operation until this delay has expired.

Manual Mode Path: Main > Configuration > Unit > Manual Mode

During normal operation, all components installed on the unit are managed automatically. To assist maintenance checks or in cases of emergency, individual components can be activated manually and independently of the control process:

• Manual Unit Startup: Enables manual mode.• Manual Override: Humidifier - Drain: Drains humidifier.• Manual Override: Compressor 1/2/3/4: Activates compressor 1, 2, 3 or 4.• Manual Override: Dry Cooler: Activates dry cooler.• Circuit 1/2 EXV Manual Mode: Activates the electronic expansion valve to selected position. • Circuit 1/2 EXV Position Manual Setting: Sets the position of the electronic expansion valve when

manually activated. • Manual Override: Motorized Damper: Activates damper.• Manual Override: Dehumidification: Activates dehumidification.• Manual Override: Reheating 1/2: Activates reheat from heater 1 or 2.• Analog Output 1: Chilled Water valve position: Sets the position of the CW valve when manually

activated.• Analog Output 2: Hot Water valve position: Sets the position of the hot water valve when manually

activated.• Analog Output 2: Modulating drycooler: Sets the position of the dry cooler when manually activated.• Analog Output 3: Evaporating fan: Sets the position of the evaporating fan when manually activated.• Analog Output 4: Hot water valve position: Sets the position of the hot water valve when manually

activated.


AlarmsAutomatic Reset

Path: Main > Configuration > Unit > Alarms > Automatic Reset

The Automatic Reset allows the unit to clear the alarm and continue operation if the alarm condition is no longer present.

• High/Low Temperature Threshold Exceeded• High/Low Humidity Threshold Exceeded• Supply Air Temperature Threshold Exceeded• High/Low Airflow• Humidifier• Smoke Detected• Electric Heater Over Temperature• Electronic Expansion Valve Error• Low Pressure• Circuit 1 Chilled Water High Temperature Threshold Exceeded• Circuit 1 Chilled Water Temperature too High for Dehumidification• Insufficient Chilled Water Flow• Primary/Secondary Power Source Unavailable• Dual Circuit Expansion Board Error Detected• Digital 2/4/6 Input Abnormal• External Sensor Threshold Exceeded

Delays

Path: Main > Configuration > Unit > Alarms > Delays

The delay specifies the amount of time that the alarm condition must be present before the alarm is activated.

• Temperature and Humidity Alarm Delay When Starting• Temperature and Humidity Alarm Delay During Normal Operation• Low Evaporating Pressure Alarm Delay

Thresholds

Path: Main > Configuration > Unit > Alarms > Thresholds

Use these screens to set thresholds for temperature violations. For example, when the air temperature exceeds the temperature defined by the High Temperature Threshold, a warning alarm occurs. Set the temperature thresholds for the following:

• Supply Air: The air leaving the cooling unit.• Return Air: The air entering the cooling unit.• Humidity High/Low (relative humidity): The relative humidity of the room.• Entering Chilled Water: The chilled water entering the cooling unit (TC units only).


Standby Rotation

Path: Main > Configuration > Unit > Alarms > Standby Rotation

In group mode with standby rotation, the standby unit is activated when the selected alarm conditions are activated. If not enabled, the alarm condition will not cause the group to rotate to the standby unit.

• High/Low Temperature Threshold Exceeded Alarm• Return Air Sensor Error Detected Alarm• Supply Air Temperature Threshold Exceeded Alarm• Supply Air Sensor Error Detected Alarm• Low Airflow Alarm• Air Filter Clogged Alarm• High Airflow Alarm• Water Detected Fault Alarm• High/Low Humidity Threshold Exceeded Alarm• Humidity Sensor Error Detected Alarm• Humidifier Alarm• Electric Heater Over Temperature Alarm• Hot Water Sensor Error Detected Alarm• Outdoor Temperature Sensor Error Detected Alarm• EEPROM Error Detected Alarm• Wrong Password Alarm• EXV Error Alarm• High/Low Pressure Alarm• No Chilled Water Flow Alarm• Circuit 1 Chilled Water High Temperature Threshold Exceeded Alarm• Circuit 1 Entering Chilled Water Temperature Sensor Error Detected Alarm• Circuit 1 Leaving Chilled Water Temperature Sensor Error Detected Alarm• Circuit 1 Chilled Water Temperature too High for Dehumidification Alarm• Digital 2/4/6 Input Abnormal Alarm• External Sensor Alarm


Relay Type

Path: Main > Configuration > Unit > Alarms > Relay Type

Use these screens to configure the relay type (A or B) for selected alarms. The relay is a set of dry contacts on the controller that open or close depending on the configuration and the alarm state. These dry contacts can be wired to a site monitoring device provided by the user. When the alarm occurs, the configured relay indicates to the receiver that the cooling unit requires attention. If None is selected, the presence of the specified alarm will not trigger the relay.

• High/Low Temperature Threshold Exceeded• Return Air Sensor Error Detected• Supply Air Temperature Threshold Exceeded• Supply Air Sensor Error Detected• Low/High Airflow• Air Filter Clogged• Air Filter Run Hours Violation• High/Low Humidity Threshold Exceeded• Humidity Sensor Error Detected• Humidifier• Humidifier Run Hours Violation• Electric Heater Over Temperature• Heater Run Hours Violation• Hot Water Sensor Error Detected• Outdoor Temperature Sensor Error Detected• EEPROM Error Detected• Wrong Password• High/Low Pressure• EXV Error• High Pressure Sensor Error Detected• Compressor # Run Hours Violation• CW+DX Mode Run Hours Exceeded• DX Mode Run Hours Exceeded• CW Mode Run Hours Exceeded• Insufficient Chilled Water Flow• Circuit 1 Chilled Water High Temperature Threshold Exceeded• Circuit 1 Entering Chilled Water Temperature Sensor Error Detected• Circuit 1 Leaving Chilled Water Temperature Sensor Error Detected• Circuit 1 Chilled Water Temperature too High for Dehumidification

Relay Normal State

Path: Main > Configuration > Unit > Alarms > Relay Normal State

Use this setting to configure the normal state of relays A and B. In its Normally Open state, the relay contact is open and the configured alarm triggers the contact to close. Conversely, in its Normally Closed state, the relay contact is closed and the configured alarm causes the relay contact to open.

• Type A Alarm Contact Normal State• Type B Alarm Contact Normal State


Display SettingsLanguage, date, and time

Path: Main > Configuration > Display > Preferences

• Language: Select the correct language for the display.• Current Date: Enter the day, month, and year. The date is displayed on some status screens and is also

used in the alarm/event log to date-stamp events.• Current Time: Enter the current time for the display.

Screen visibility and audible tones

Path: Main > Configuration > Display > System Settings

• Alarm Volume: Select the level of audio at which alarms will sound.• Button Volume: Enable/Disable the audible tone that sounds every time a key is pressed on the

display interface and select the volume at which the tone will be produced. • Brightness: Controls the visibility of the display.• Enable Backlight Timeout: Enable/Disable backlight timeout settings.• Backlight Timeout: Turns off unit backlight after a specified amount of time. Timeout range is 1–60

minutes.• Intensity: Select the visibility of the display during backlight timeout.

– Off: The display will remain at the normal intensity level.– Very Low: The display will be very dim.– Low: The display will be dim.– Medium: The display will dim to about half of the normal brightness.

• Auto Logoff: Automatically signs current user out of the system after specified amount of time. Timeout range is 1–60 minutes.

Add a new user or edit an existing user

Path: Main > Configuration > Display > Security

1. Select Add User to add a new user or select Edit User to edit an existing user of the system.2. In the Name field, enter the name of the user.3. In the Pin field, enter a pin code for the user.4. In the Confirm Pin field, re-enter the pin code of the user.5. Under Language, select the preferred language of the user.6. Under Date Format, select the preferred date format for the user.7. Under Temperature, select if the user should see temperature values in metric (Celsius) or US

Customary (Fahrenheit) format.8. Press OK to save your settings.


Network Configuration The cooling unit is shipped with an embedded Network Management Card (NMC) that enables you to manage the cooling unit over your network. Configure the network settings for the Network Management Card from the display interface. The management card allows remote control and configuration of the cooling unit. The 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.

Configure the network

Path: Main > Configuration > Network

• TCP/IPv4: – Enable IPv4 (if applicable)– Address mode: Identifies how the IP address is obtained (Manual, DCHP, BOOTP), – Require vendor specific cookies (Yes/No)– System IP: The IP address of the unit– Subnet Mask: The subnet mask for the sub-network.– Default Gateway: The default gateway address used by the network.

• TCP/IPv6: – Enable IPv6 (if applicable), identifies whether the specified network is Enabled or Disabled.

• Auto Configuration: Displays Yes if the IP address is assigned automatically

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 PORT

FOR DISPLAY CABLE

(FACTORY WIRED)

RJ-45 PORT

FOR CUSTOMER NETWORK CABLE

BOTTOM VIEW


• Manual Configuration: Displays Yes if the IP address is assigned manually.– select the DHCPv6 Mode (Router controlled, – Router Controlled: When this box is selected, DHCPv6 is controlled by the M (Managed Address

Configuration Flag) and O (Other Stateful Configuration Flag) flags received in IPv6 Router Advertisements.When a router advertisement is received, the NMC checks whether the M and O flags are set. The NMC interprets the state of the M and O bits for the following cases:

• Neither is set: Indicates local network has no DHCPv6 infrastructure. The NMC uses Router Advertisements and/or manual configuration to get non-link-local addresses and other settings.

• M, or M and O are set: Full DHCPv6 address configuration occurs. DHCPv6 is used to obtain addresses AND other configuration settings (known as DHCPv6 stateful). Once the M flag has been received, the DHCPv6 address configuration stays in effect until the interface in question has been closed, even if subsequent Router Advertisement packets are received in which the M flag is not set. If an O flag is received first, then an M flag is received subsequently. The NMC performs full address configuration upon receipt of the M flag

• Only O is set: In this situation, the NMC sends a DHCPv6 Info-Request packet. DHCPv6 is used to configure other settings (such as location of DNS servers), but NOT to provide addresses. This is known as DHCPv6 stateless.

– Address and Other Information: If this box is selected, DHCPv6 is used to obtain addresses AND other configuration settings. This is known as DHCPv6 stateful.

– Non-Address and Information Only: If this box is selected, DHCPv6 is used to configure other settings (such as locations of DNS servers), but NOT to provide addresses (known as DHCPv6 stateless).

• Never: If this box is selected, DHCPv6 is NOT to be used for any configuration settings.– System IP– Default Gateway

• Web Access: – Enable Web (if applicable)– Select the access Mode (HTTP and/or HTTPS)– Port– Restore Port to Default.

• FTP server: – Enable FTP (if applicable)– Port– Restore Port to Default

Restore Defaults

Path: Main > Configuration > Restore Defaults

• Restart Network Interface• Reset All• Exclude TCP/IP• Event Configuration

Modus TCP/IP:

Path: Configuration > Modbus TCP

• Enable Modbus • TCP• Port• Restore Port to Default


Unit Information

AboutAbout the cooling unit

Path: Main > About

These screens provide basic information about the cooling unit.

Network

Path: Main > About > Network

View identifying information about the cooling network parameters.

Display

Path: Main > About > Display

About the display

View identifying information about the device:

• Model Number: The model number of the unit.• Serial Number: The serial number of the unit.• Hardware Revision: The hardware revision of the unit.• Manufacture Date: The date the unit was manufactured.• MAC Address: The MAC address of the unit.

View identifying revision information about the display interface firmware:

• Application: the cooling application• APC OS (AOS)• APC Boot Monitor• Video Driver• FPGA

Controller

Path: Main > About > Unit

View identifying information about the embedded controller:

• Serial Number: The serial number of the controller.• Firmware Version: The version number of the controller firmware.• BIOS Version: The BIOS version of the controller.• Boot Version: The boot version of the controller.


Counters/Run HoursPath: Main > Counters/Run Hours > Run Hours

The cooling unit records the number of hours each of its devices has been in operation.

• Air Filter • Unit

NOTE: Since the fan continuously runs when the unit is on, the Unit Run Hours represents the fan run hours.

• Standby Run Hours• CW+DX Run Hours (Twin-Cool units only)• DX Run Hours (Twin-Cool units only)• CW Run Hours (Twin-Cool units only)• Compressor 1/2/3/4 Run Hours• Heater 1/2 Run Hours• Humidifier Run Hours• Dehumidification Run Hours

Run Hours Reset

Path: Main > Counters/Run Hours > Run Hours Reset

Use this screen to reset counters (check box for Reset) for the selected components.

• Air Filter• Unit• Standby Run Hours• CW+DX Run Hours (Twin-Cool units only)• DX Run Hours• CW Run Hours (Twin-Cool units only)• Compressor 1/2/3/4 Run Hours• Heater 1/2 Run Hours• Humidifier Run Hours• Dehumidification Run Hours

Run Hours Thresholds

Use this screen to add threshold limits for the number of hours that devices operate between 0–32000 hours.

Path: Main > Counters/Run Hours > Run Hours Thresholds

• Air Filter • Unit • Standby Run Hours• CW+DX Run Hours (Twin-Cool units only)• DX Run Hours (Twin-Cool units only)• CW Run Hours (Twin-Cool units only)• Compressor 1/2/3/4 Run Hours• Heater 1/2 Run Hours• Humidifier Run Hours• Dehumidification Run Hours


Cycle Counters

Path: Main > Counters/Run Hours > Cycle Counters

This screen displays the number of On/Off cycles for the following devices:

• Compressor 1/2/3/4 Number of Cycles: • Heater 1/2 Number of Cycles: • Humidifier Number of Cycles:

Cycle Counters Reset

Path: Main > Counters/Run Hours > Cycle Counters Reset

Use this screen to reset the cycle count (check box for Reset) for the following devices:

• Reset Compressor 1/2/3/4 Cycle Counter• Reset Heater 1/2 Cycle Counter• Reset Humidifier Cycle Counter


Event LogThe event log saves status information and a message each time a change in the cooling group is detected. Alarms and events are recorded in the log and displayed on the active alarm screen. Status information and system configuration changes are only displayed in the event log.

View event log

Path: Main > Logs > Event Log

The event log keeps a record of all alarms and events. The screen displays the name of the event in addition to the time and date the event occurred (date only shown for events at least one day old).

Use the arrows to scroll through the list of events. Use Delete to remove all event logs. Use Filter to filter events by event time, severity, or category.

Export Data

Path: Main > Logs > Export Data

Various log data can be exported to a USB drive connected to the display. The following files are exported into a single ZIP file:

• debug.txt• dump.txt• event.txt• data.txt• config.ini

FILTERDELETE


Viewing Status

Path: Main > Status

NOTE: Some display items may not be available depending on the configuration of the unit.

Use these screens to view status information.

AirflowPath: Main >Status > Airflow

• Fans• Fan Speed

TemperaturePath: Main > Status > Temperature

• Return Air Temperature• Active Return Air Setpoint• Supply Air Temperature• Outdoor Air Temperature• Return Air Setpoint External Offset Voltage• Return Air Setpoint External Offset Temperature

Humidity Path: Main > Status > Humidity

• Humidification • Dehumidification • Return Air Relative Humidity • Humidifier Output • Humidifier Actual Production • Humidifier Current • CPY: d3 Act.Prod. Unit of measure • CPY: Humidifier Status • CPY: Maximum Production • CPY: Humidif. Life • CPY: dA Cyl. Life • CPY: Conductivity • CPY: (current model read) • CPY: d1 Signal Input • CPY: d1 Signal Input Units • CPY: Cylinder Phase • CPY: PreC:


DX UnitsCompressors

Path: Main > Status > DX > Compressors

• Compressor #

Circuit 1/2

Path: Main > Status > DX > Circuit 1/2

• Circuit Evaporating Pressure• Circuit Evaporating Temperature• Circuit Suction Temperature• Circuit Superheat• Circuit EXV Position• Circuit Superheat Setpoint• Circuit EXV Power Request• Circuit Discharge Pressure• Circuit Discharge Temperature• Circuit Discharge Pressure Control Water Valve Position

Chilled WaterPath: Main > Status > Chilled Water

• Circuit 1 Chilled Water Valve • Circuit 1 Chilled Water Valve Position (ES and TC units only)• Circuit 1 Entering Chilled Water Temperature (ES and TC units only)• Circuit 1 Leaving Chilled Water Temperature (TC units only)

Heaters Path: Main > Status > Heaters

• Electric Heater 1/2 • Hot Water Temperature • Hot Water Valve Position • Hot Gas Reheat


Digital InputsPath: Main > Status > Digital Inputs

• DI1: Low Airflow Switch• DI2: Remote ON-OFF/Change Setpoint/User Configuration/Water Detection• DI3: Clogged Air Filter Switch• DI4: Remote ON-OFF/Change Setpoint/User Configuration/Smoke-Fire• DI5: Circuit 1 High Pressure Switch• DI6: Remote ON-OFF/Change Setpoint/User Configuration/External Sensor• DI7: Electric Reheat Over Temperature Switch• DI9: Circuit 2 High Pressure Switch• DI10: High Airflow Switch

Digital OutputsPath: Main > Status > Digital Outputs

• DO1: Fan• DO2: Reheat Element 1/Hot Gas Reheat• DO3: Reheat Element 2/Compressor 1• DO4: Colder Water Chiller Request• DO5: Damper• DO7: Type B Alarm/Drycooler Switch (ES units only)• DO8: Type A Alarm• DO9: Compressor 1• DO10: Compressor 2• DO11: Compressor 3• DO12: Compressor 4• DO13: Drycooler Switch (ES units only)

GroupPath: Main > Status > Group

• Average– LAN Average Return Air Temperature– LAN Average Relative Humidity

• Unit # (2/3/4/5/6/7/8/9/10)– Return Air Temperature: The temperature of the air entering the cooling unit.– Return Air Relative Humidity: The humidity of the air entering the cooling unit.


Alarm Messages and Actions

Use the following table to view alarms and appropriate actions.

Displayed Alarm Message Severity Action Required

Internal Communication Error Critical • Power cycle the unit.• Call Technical Support if the problem persists.

High Temperature Threshold Exceeded Warning • Check temperature threshold settings.• Check if the thermal load of the room is too high.• Call Technical Support if the problem persists.

Low Temperature Threshold Exceeded Warning • Check temperature threshold settings.• Call Technical Support if the problem persists.

High Humidity Threshold Exceeded Warning • Check humidity threshold settings.• Verify that the room is vapor sealed.• Call Technical Support if the problem persists.

Low Humidity Threshold Exceeded Warning • Check humidity threshold settings.• Verify that the water supply for the humidifier is

adequate.• Call Technical Support if the problem persists.

External Sensors Threshold Exceeded Warning • Check temperature threshold settings.• Call Technical Support if the problem persists.

Air Filter Clogged Warning • Inspect and, if necessary, replace the air filter.• Call Technical Support if the problem persists.

Water Detected Critical • Check for presence of water near the unit.• Check the water level of the condensate pump.• Call Technical Support if the problem persists.

Low Airflow Critical • Verify that internal panels have not been removed.• Check for obstructions under the floor and in the

ducting.• Increase fan speed.• Call Technical Support if the problem persists.

Electric Heater Over Temperature Warning • Call Technical Support.

Circuit # High Pressure Critical • Verify condenser coil and dry cooler coil are clean.• Verify condenser or dry cooler fans are operational.• For dry cooler systems, verify that the pump package is

functioning.• If these actions solve the problem, a field service

representative must reset the high pressure switch inside the unit.

• Call Technical Support if the problem persists.

Circuit # Low Pressure Critical • Call Technical Support.

Circuit # Electronic Expansion Valve Error Critical • Call Technical Support.

Primary Power Source Error Warning • Check primary power source.• Call Technical Support if the problem persists.

Smoke Detected Critical • Check for the presence of smoke in the room.• Call Technical Support if the problem persists.

Unexpected Number of Units in LAN Warning • Check LAN settings.• Verify that each unit in the group corresponds to the

units specified in the LAN settings.• Call Technical Support if the problem persists.


Humidifier High Current Warning • Ensure that the humidifier water supply has not been conditioned. Conditioning can increase the water conductivity.


Humidifier Low Current Warning • Call Technical Support.

Humidifier Water Loss Warning • Verify supply water is present.• Call Technical Support if the problem persists.

Circuit # Chilled Water Temperature too High for Dehumidification

Warning • Verify chiller is operational.• Call Technical Support if the problem persists.

No Chilled Water Flow Critical • Check Chilled Water supply.• Call Technical Support if the problem persists.

Circuit # Chilled Water High Temperature Threshold Exceeded

Critical • Check the temperature of the chilled water supply.• Call Technical Support if the problem persists.

Return Air Sensor Error Detected Warning • Call Technical Support.

Hot Water Sensor Error Detected Warning • Call Technical Support.

Circuit # Entering Chilled Water Temperature Sensor Error Detected

Warning • Call Technical Support.

Outdoor Temperature Sensor Error Detected


Supply Air Sensor Error Detected Warning • Call Technical Support.

Humidity Sensor Error Detected Warning • Call Technical Support.

Circuit # Leaving Chilled Water Temperature Sensor Error Detected


Compressor # Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Air Filter Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Humidifier Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Unit Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Digital Input # Abnormal Warning • Call Technical Support.

Humidifier Error Warning • Call Technical Support.

Unit in Rotation Alarm Informational Customer configured alarm: • Check for other alarms.• Check configuration.• Call Technical Support if the problem persists.

Unit in Type A/B/C Alarm Informational Customer configured alarm: • Check for other alarms.• Check configuration.• Call Technical Support if the problem persists.

High Airflow Warning • Call Technical Support.



Unit # in Standby due to rotation alarm Informational Customer configured alarm: • Check for other alarms.• Check configuration.• Call Technical Support if the problem persists.

Expansion Board Error Detected Warning • Call Technical Support.

EEPROM Error Detected Critical • Call Technical Support.

Supply Air Temperature Threshold Exceeded

Warning • Check temperature threshold settings.• Call Technical Support if the problem persists.

Humidifier High Conductivity Warning • Ensure that the humidifier water supply has not been conditioned. Conditioning can increase the water conductivity.


Humidifier Low Steam Production Warning • Call Technical Support.

Humidifier Drain Error Warning • Call Technical Support.

Humidifier Water Level Too High Warning • Check the humidifier fill and drain valves for clogging.• Check the operation of the humidifier drain solenoid.• Call Technical Support if the problem persists.

Humidifier Mandatory Maintenance Required


Dual Circuit Expansion Board Error Warning • Call Technical Support.

Manual Mode Enabled Informational • Verify that manual mode is disabled.• Call Technical Support if the problem persists.

Input Power Frequency Not Detected Warning • Check input power source.• Call Technical Support if the problem persists.

CW+DX Mode Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

DX Mode Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

CW Mode Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Circuit # Discharge Pressure Sensor Error Warning • Call Technical Support.

Dehumidification Mode Run Hours Exceeded

Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Standby Mode Run Hours Exceeded Informational Customer configured alarm: • Check configuration.• Call Technical Support if the problem persists.

Primary Power Source Unavailable Warning • Check primary power source.• Call Technical Support if the problem persists.

Secondary Power Source Unavailable Warning • Check secondary power source.• Call Technical Support if the problem persists.

Circuit # Low Evaporating Temperature Critical • Call Technical Support.

Circuit # High Evaporating Temperature Critical • Call Technical Support.

Circuit # Evaporating Pressure Sensor Error


Circuit # Discharge Pressure Sensor Error Warning • Call Technical Support.



Circuit # Suction Temperature Sensor Error


Circuit # EXV Stepper Motor Error Warning • Call Technical Support.

Circuit # EXV Driver EEPROM Error Warning • Call Technical Support.

Circuit # Low Superheat Warning • Call Technical Support.

Circuit # EXV Not Closed During Power Off


Circuit # EXV Driver Communication Error Warning • Call Technical Support.

Circuit # High Suction Temperature Warning • Call Technical Support.

Discharge Pressure Control: Expansion Board Error Detected


Condensation Control Expansion Board not Connected Circuit 2 TLAN 5

Critical • Call Technical Support.

CPY: Mn: Maintenance Required Warning • Check run hours.• Check preventive maintenance schedule.• Call Technical Support if the problem persists.

CPY: EC: High Supply Water Conductivity Warning • Ensure that the humidifier water supply has not been conditioned. Conditioning can increase the water conductivity.


CPY: E1: Configuration parameters corrupted


CPY: E0: Internal Error Warning • Call Technical Support.

CPY: EH: High Current Warning • Ensure that the humidifier water supply has not been conditioned. Conditioning can increase the water conductivity.


CPY: EP: Low Production Warning • Call Technical Support.

CPY: EU: High Level and no Fill Warning • Verify that the humidifier water supply is open and flowing to the humidifier water connection


CPY: E3: Wiring of External Demand Faulty


CPY: EF: Lack of Supply Water Warning • Verify that the humidifier water supply is open and flowing to the humidifier water connection.


CPY: Ed: Drain Alarm Warning • Call Technical Support.

CPY: CY: Maintenance Time Expired Warning • Call Technical Support.

CPY: EA: Foam Warning • Verify that the humidifier water supply is not using conditioned water and that the water does not contain contaminates.

• Check the humidifier water supply hose for dirt and contaminates.

• Drain the humidifier canister and refill with fresh water.• Call Technical Support if the problem persists.

CPY: CP: Clean Cylinder Warning • Call Technical Support.

CPY: CL: Replace Cylinder Warning • Check the preventive maintenance schedule.• Call Technical Support if the problem persists.

CPY: ID Device Alarm Warning • Call Technical Support.



CPY: Warning Match Digit Warning • Call Technical Support.

CPY: Off line Device Warning • Call Technical Support.

CPY: E_: Alarm Probe High Humid. Warning • Call Technical Support.

CPY: E_: Alarm Probe Low Humid. Warning • Call Technical Support.

CPY: Su: Serial Disconnected Warning • Call Technical Support.



Settings and Adjustments

Nominal Fan Speed All units are factory-configured with a nominal fan speed setting that allows for nominal air flow with 0.08 in. of External Static Pressure (ESP).

Air-cooled and Water-cooled DX Units 208–230V/3Ph/60HzT*AV and T*WV units

Frame Model Fans Fan Power Supply (V/Ph/Hz)

Without Hot Water Reheat

With Hot Water Reheat

No Electrical Heater

With Electrical Heater



Fan Speed [%]Downflow3 0511D and 0611D 1 208–230/3/60 56 56 57 574 0921D 1 65 65 65 665 1121D 2 55 56 56 576 1422D, 1622D, 1822D 2 68 69 69 717 2242D and 2542 3 74 76 N/A N/A7 2842G and 3342D 3 75 77 N/A N/AUpflow3 0511D and 0611D 1 208–230/3/60 55 55 56 564 0921D 1 65 65 65 665 1121D 2 55 56 56 576 1422D, 1622D, and 1822D 2 68 69 69 717 2242D and 2542D 3 68 70 N/A N/A7 2842G and 3342D 3 70 73 N/A N/A


Twin-cool and Energy Saver DX units 208–230V/3Ph/60Hz

Air-cooled and Water-cooled DX units 460V/3Ph/60Hz and 575V/3Ph/60Hz

T*TV, T*DV, and T*EV Units

Frame Model Fans Fan Power Supply V/Ph/Hz







Fan Speed [%]Downflow3 0511D and 0611D 1 208–230/3/60 58 66 59 604 0921D 1 65 58 66 675 1121D 2 57 58 58 596 1422D, 1622D, and 1822D 2 70 72 72 737 2242D and 2542D 3 78 80 N/A N/A7 2842D and 3342D 3 78 80 N/A N/AUpflow3 0511D and 0611D 1 208–230/3/60 57 58 58 584 0921D 1 65 66 66 675 1121D 2 57 58 58 596 1422D, 1622D, and 1822D 2 70 72 72 737 2242D and 2542D 3 71 73 N/A N/A7 2842G and 3342D 3 73 75 N/A N/A

T*AV and T*WV UnitsFrame Model Fans Fan Power

Supply V/Ph/Hz







Fan Speed %Downflow3 0511G and 0611G/L 1 460/3/60

575/3/6060 61 61 61

4 0921G/L 1 65 66 66 665 1121G/L 2 58 59 59 606 1422G/L, 1622G/L, and 1822G/L 2 67 68 68 697 2242G/L and 2542G/L 3 71 73 N/A N/A7 2842G/L and 3342G/L 3 72 74 N/A N/AUpflow3 0511G/L and 0611G/L 1 460/3/60

575/3/6059 60 60 60

4 0921G/L 1 65 66 66 665 1121G/L 2 58 59 59 606 1422G/L, 1622G/L, and 1822G/L 2 67 68 68 697 2242G/L and 2542G/L 3 66 68 N/A N/A7 2842G/L and 3342G/L 3 69 71 N/A N/A


Twin-cool and Energy Saver DX units 460V/3Ph/60Hz and 575V/3Ph/60Hz

Calculating External Static PressureIn the following tables the maximum pressure available is expressed in the inches of water column (in. wc) for each unit size and voltage indicated. The values are given for the maximum air flow expressed in CFM.

To change the fan output percentage on the display interface, use the following path:

Path: Main > Configuration > Unit > Airflow > Fan > Fan Speed

All units are factory-configured with a nominal fan speed setting that allows for nominal air flow with 0.08 in. of External Static Pressure (ESP).

Units without electrical heaters

T*TV, T*DV, and T*EV UnitsFrame Model Fans Fan Power

Supply V/Ph/Hz







Fan Speed %Downflow3 0511G/L and 0611G/L 1 460/3/60

575/3/6063 63 64 64

4 0921G/L 1 65 66 66 665 1121G/L 2 60 61 61 626 1422G/L, 1622G/L, and 1822G/L 2 69 70 70 717 2242G/L–2542G/L 3 75 77 N/A N/A7 2842G/L and 3342G/L 3 75 77 N/A N/AUpflow3 0511G/L and 0611G/L 1 460/3/60

575/3/6062 62 62 63

4 0921G/L 1 65 66 66 665 1121G/L 2 60 61 61 626 1422G/L, 1622G/L, and 1822G/L 2 69 70 70 717 2242G/L and 2542G/L 3 69 71 N/A N/A7 2842G/L and 3342G/L 3 70 72 N/A N/A

Downflow Units 208–230V/3Ph/60Hz0511D0611D

0921D 1121D 1422D1622D 1822D

2242D2542D

3342D2842D

Nominal Air Flow (CFM)

3355 4826 7240 9417 12654 12654

Fan Speed Setting

% ESP (in. wc)55 0 0 0 0 0 060 0.17 0.21 0.67 0 0 065 0.61 0.58 1.04 0.30 0.10 0.0270 1.04 0.91 1.37 0.63 0.44 0.3575 1.48 1.21 1.67 0.93 0.74 0.6580 1.91 1.47 1.94 1.19 1.00 0.9285 2.26 1.70 2.16 1.42 1.22 1.1490 2.26 1.88 2.34 1.60 1.40 1.3295 1.45 2.01 2.47 1.72 1.53 1.45100 1.61 2.09 2.55 1.81 1.62 1.53


Upflow Units 208–230V/3Ph/60Hz0511D 0611D

0921D 1121D 1422D1622D1822D

2242D2542D

3342D2842D

Nominal Air Flow–CFM 3355 4826 7240 9417 13243 13243Fan Speed Setting

% ESP (in. wc)55 0 0 0 0 0 060 0.27 0.21 0.67 0 0 065 0.70 0.58 1.04 0.30 0.34 0.2970 1.14 0.91 1.37 0.63 0.68 0.6275 1.57 1.21 1.67 0.93 0.98 0.9280 2.00 1.47 1.94 1.19 1.24 1.1885 2.35 1.70 2.16 1.42 1.46 1.4190 2.35 1.88 2.34 1.60 1.64 1.5995 1.45 2.01 2.47 1.73 1.77 1.72100 1.61 2.09 2.55 1.81 1.86 1.80

Downflow Units 460V/3Ph/60Hz and 575V/3Ph/60Hz0511GL0611G/L

0921G/L 1121G/L 1422G/L1622G/L1822G/L

2242G/L2542G/L

3342G/L 2842G/L


% ESP (in. wc)55 0 0 0 0 0 060 0 0.54 0.51 0.11 0 065 0.16 0.83 0.80 0.39 0.09 0.0170 0.55 1.12 1.08 0.68 0.37 0.2975 0.91 1.40 1.37 0.96 0.66 0.5880 1.26 1.69 1.66 1.25 0.95 0.8785 1.59 1.98 1.95 1.54 1.24 1.1690 1.90 2.27 2.24 1.83 1.53 1.4595 1.45 2.57 2.53 2.13 1.82 1.74100 1.61 2.86 2.83 2.42 2.12 2.03


Units with electrical heaters

Upflow Units 460V/3Ph/60Hz and 575V/3Ph/60Hz0511G/L 0611G/L

0921G/L 1121G/L 1422G/L1622G/L1822G/L

2242GL2542G/L

3342G/L 2842G/L


% ESP (in. wc)55 0 0 0 0 0 060 0 0.54 0.51 0.11 0.14 0.0965 0.25 0.83 0.80 0.39 0.43 0.3770 0.64 1.12 1.08 0.68 0.71 0.6675 1.01 1.40 1.37 0.96 1.00 0.9480 1.35 1.69 1.66 1.25 1.29 1.2385 1.68 1.98 1.95 1.54 1.58 1.5290 1.99 2.27 2.24 1.83 1.87 1.8195 1.45 2.57 2.53 2.13 2.16 2.11100 1.61 2.86 2.83 2.42 2.46 2.40

Downflow Units 208–230V/3Ph/60Hz0511D0611D

0921D 1121D 1422D1622D1822D

2242D2542D

3342D 2842D


% ESP (in. wc)55 0 0 0 0 0 060 0.13 0.15 0.53 0 0 065 0.57 0.52 0.90 0.06 0 070 1.00 0.85 1.23 0.39 0.01 075 1.44 1.15 1.53 0.69 0.31 0.2280 1.87 1.41 1.79 0.96 0.57 0.4985 2.21 1.64 2.02 1.18 0.79 0.7190 2.21 1.81 2.20 1.36 0.97 0.8995 1.45 1.95 2.33 1.49 1.11 1.02100 1.61 2.03 2.41 1.57 1.19 1.11


Upflow Units 208–230V/3Ph/60Hz0511D0611D

0921D 1121D 1422D1622D1822D

2242D2542D

3342D2842D

Nominal Air Flow– CFM 3355 4826 7240 9417 13243 13243Fan Speed Setting

% ESP (in. wc)55 0 0 0 0 0 060 0.23 0.15 0.53 0 0 065 0.66 0.52 0.90 0.06 0 070 1.10 0.85 1.23 0.39 0.21 0.1575 1.53 1.15 1.53 0.69 0.51 0.4580 1.96 1.41 1.79 0.96 0.77 0.7185 2.31 1.64 2.02 1.18 0.99 0.9490 2.31 1.81 2.20 1.36 1.17 1.1295 1.45 1.95 2.33 1.49 1.30 1.25100 1.61 2.03 2.41 1.57 1.39 1.33

Downflow Units 460V/3Ph/60Hz and 575V/3Ph/60Hz0511G/L 0611G/L

0921G/L 1121G/L 1422G/L1622G/L1822G/L

2242G/L 2542G/L

3342G/L 2842G/L


% ESP (in. wc)55 0 0 0 0 0 060 0 0.48 0.37 0 0 065 0.12 0.77 0.66 0.15 0 070 0.51 1.05 0.94 0.44 0 075 0.87 1.34 1.23 0.73 0.23 0.1580 1.22 1.63 1.52 1.01 0.52 0.4485 1.55 1.92 1.81 1.30 0.81 0.7390 1.86 2.21 2.10 1.60 1.10 1.0295 1.45 2.50 2.39 1.89 1.39 1.31100 1.61 2.80 2.69 2.18 1.69 1.60


Setting Regulation and Safety DevicesAfter starting up the system, adjust the following setpoints if necessary:

• Return air setpoint• Humidification setpoint

For details about changing setpoints, see “Setpoints” on page 21.

Upflow Units 460V/3Ph/60Hz and 575V/3Ph/60Hz0511G/L 0611G/L

0921G/L 1121G/L 1422G/L, 1622G/L, 1822G/L

2242G/L 2542G/L

3342G/L 2842G/L


% ESP (in. wc)55 0 0 0 0 0 060 0 0.48 0.37 0 0 065 0.21 0.77 0.66 0.15 0 070 0.60 1.05 0.94 0.44 0.24 0.1975 0.96 1.34 1.23 0.73 0.53 0.4780 1.31 1.63 1.52 1.01 0.82 0.7685 1.64 1.92 1.81 1.30 1.11 1.0590 1.95 2.21 2.10 1.60 1.40 1.3495 1.45 2.50 2.39 1.89 1.69 1.64100 1.61 2.80 2.69 2.18 1.99 1.93


Setting the air flow sensor

The fan differential pressure switch closes or opens if a fan stops working. The factory setpoint of the fan differential pressure switch is set to 0.8 mbar (0.3 in. wc).

Because the pressure difference between fan return and supply depends on the air flow of the application, you may have to adjust the switch using a Phillips screwdriver after installation. To set the fan differential pressure switch:

• Rotate the dial to the right to decrease the minimum differential pressure setting.• Rotate the dial to the left to increase the minimum differential pressure setting.

NOTE: Ensure that the contact closes when the fans are operating.




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Setting the clogged filter sensors

The differential pressure switch is set according to the loss of load dependent on the dirt inside the filters and the amount of air flow. The differential pressure switch is factory set at 3 mbar (1.2 in. wc). To verify and set the pressure switch:

1. Using a Phillips screwdriver, turn the pressure switch to the desired value.2. Gradually cover the air filter surface, verifying that the pressure switch activates when the filter is about

50–60% covered. If the pressure switch does not activate, gradually lower the setting; if the switch activates too soon, increase the setting.

Service Settings Access

Some settings require a service pass code. To obtain service pass codes, contact Schneider Electric Technical Support.

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Maintenance

Safety During Maintenance WorkAll work must be carried out by technicians that have been qualified and trained on Schneider Electric cooling products.

NOTE: In the event of prolonged inactivity, drain the unit before performing maintenance.

Quarterly ChecksPerform the following checks every three months:




WARNINGHAZARD 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.

Ensure that

R Measure the power supply voltage and record any voltage imbalance.R Check for active alarms and review the alarm log history.R Check the temperature and humidity sensor readings.R Check the correct operation of the local/remote controls.R Check the air filters; replace them if necessary.R Check the efficiency of the condensate drain.R Verify that the steam cylinder is clean; replace it if necessary.R Check the condition of indoor and outdoor fans.


Semi-Annual Checks Perform the following checks every six months:

Annual ChecksPerform the following checks every twelve months:

Ensure that

R Check the cooling coil and clean if necessary.R Check the operation of the humidifier.R Check the operation of the chilled water control valves.R Check refrigerant pressures, superheat and sub cooling temperatures.R Check the operation of the expansion valves and head pressure control valves.R Check the operation of the compressors and the liquid line sight glass.R Check the temperature difference across the filter drier.R Check the operation of the outdoor heat exchanger fan controls, fan controller set points, outdoor

sensors, and fluid pump operation.

Ensure that

R Check for corrosion on hardware and coils.R Check all hinges and gaskets.R Check all cables and wiring.R Tighten the terminal blocks.R Check safety device settings (pressure switches and protection devices) and reset if necessary.R Check the fittings, operation, and amps of the fan(s) motor.R Check the regulation devices setting and reset if necessary.R Check the chilled water circuit seal (reseal if necessary) and tighten the unit couplings.R Check the water regulation valve(s) setting and reset if necessary.


Replacing Filters1. Open the front panels and locate filter.2. Remove the filter blocking supports, and remove old filter.3. Reposition the new filters, checking the direction of the air flow (noted on the filters).

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FRAMES 1-6 UNITS FRAME 7 UNITS

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REAR RETURN UNITS

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.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.

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