Data Cool

1 data CoolInstallation, Operation and Maintenance Manual2 and 3 tonAir, Water and Glycol Cooled DX and Chilled Water2 CONGRATULATIONS ON THE SELECTION OF A data AIRE PRECISION ENVIRONMENTALCONTROL SYSTEM. PROPER INSTALLATION, OPERATION AND MAINTENANCE OF THISEQUIPMENT WILL ENSURE YEARS OF OPTIMAL manual is intended to assist trained service personnel by providingnecessary guidelines for this particular equipment. Installation and service toData Aire units should be done by qualified individuals with an adequatebackground in areas such as HVAC, electrical, plumbing and electronics, performed by unauthorized or unqualified technicians may voidmanufacturers warranties and could result in property damage and/orpersonal care should be given to those areas where these symbols of ContentsMODEL Considerations .. the Indoor Condensing Air Cooled Unit Liquid Lines .. Suction Sizes, Air Cooled Units .. Field Piping, Remote Condensing Unit.

2 Cooled Unit Liquid Lines .. Suction Connection Sizes, Water/Glycol Cooled Connection Sizes, Fluid Water Piping .. Drain Piping .. Control OF REMOTE OUTDOOR HEAT the Remote Heat Cooled Condensers - Model Speed 154 Table of Contents, Voltage Phase Check .. Secondary Heat Cooled Systems .. Split Indoor Air Cooled Systems Fan Speed Control System Cooled Water/Glycol Cooled Systems Refrigeration Expansion High Pressure Cutout Low Pressure Cutout Programmable Mini DAP II Microprocessor Control DAP II Microprocessor Control Diagrams .. MAINTENANCE Filters .. Filter Drier .. data 23 Line Sizing 24 Monthly Maintenance Inspection 25 Quarterly Maintenance Inspection 28 - 295 Model INSTALLATIONT here is no intent on the part of data Aire, Inc. to define local codes or statutes which maysupercede common trade practices.

3 The manufacturer assumes no responsibility for theirinterpretation. Consult local building codes and the National Electrical Code for specialinstallation ConsiderationsPrecision air conditioning equipment is designed to control spaces within close tolerances of temperatureand humidity. However, the room must be built with a proper vapor barrier. A film of polyethylene is oftenused on walls and ceilings. Walls and floors must also be painted with a vapor-seal paint. All doors tothe data room should be equipped with weather seals to prevent the infiltration of non-neutral conditionedair from entering the data room. Failure to provide a vapor barrier can compromise the ability to controlspace of outside air into the space should be minimized. Outside air in excess of 5% of the totalcirculated air volume can have a significant effect on the overall space conditions and result in poorspace control. All outside air that is introduced into the space should be conditioned to the humidity andtemperature parameters of the computer room air conditioning (CRAC) unit set points to maintain properroom conditions and to prevent the CRAC units from running excessively to maintain the room Inspection This data Aire unit has been factory run-tested and has gone through a comprehensive inspection priorto its packaging and shipment to ensure that it arrives in excellent condition.

4 However, shipping damagecan occur and a visual inspection of the outer crating immediately upon delivery should be any external damage or other transportation damage on the freight carrier s forms. Inspect the unititself for internal damage. A claim should be filed with the shipping company if the equipment is damagedor items such as thermostat or other optional control panels are shipped with the unit. Refer to themanila shipping tag located on the unit panel for detailsFreight damage claims are the responsibility of the purchaser. Action to recover lossesshould be filed immediately with the freight company. Refer to yellow shipping tag located onthe unit door for detailsFreight damage claims are the responsibility of the purchaser. Action to recover losses should be filedimmediately. Please notify factory personnel of any the UnitWhen installing the unit, sufficient space must be allowed for airflow clearance, wiring, plumbing andservice access. It is recommended that each side and front have a clearance of at least 12" to allowservicing of the sides may not require as much service clearance.

5 Refer to the unit component drawings forassistance. Rear clearance is not to Installing Contractor: Condensation formation and frequent humidifier flushing (whenhumidifier is installed) are normal functions of this equipment. Drain connections must bemade to ensure proper water removal. Unit will require drain connections for condensateremoval and water connections possibly for humidifier (when installed) makeup water, chilledwater and/or hot water. Installation of units above equipment that could sustain water dam-age should be Indoor Condensing UnitsThese 24 tall section is to be mounted using four threaded rods. Air cooled condensing units havefactory provided duct collars on the supply and intake air openings as appropriate. Split water cooledcondensing sections do not require airflow installations have the condensing section physically near the evaporator, especially sincemost have shared electrical line Leveling LegsEach data Cool comes equipped with four leveling legs.

6 When mounting the unit on the floor, toensure the best possible operation the leveling legs should be adjusted so that the unit is PaperworkEach data Aire unit ships with a start-up sheet that must be completed during installation, and start up ofthe unit(s). Also included in the paperwork is a warranty/information packet that provides importantwiring diagrams, specific component literature, warranty registration card and other valuable paperwork,including a copy of this Installation/Operation and Maintenance manila tag is attached to the outside panel to indicate articles that may have been packaged andshipped loose within the unit cabinet. This could be the thermostat or other optional control devices thatare not factory is the responsibility of the installing contractor to return the start-up sheet and warranty registrationcard to data Aire for proper activation of the unit warranty. Failure to do so may cause delays inwarranty related services and in some cases void the StorageYour data Aire equipment comes ready for immediate installation.

7 In some instances it may be necessaryto store the equipment for a period of time. If you must store the equipment it should be done in a dryarea, out of the weather, protected from freezing temperatures, protected from damage by other equipmentin storage or transportation equipment, never stacked, and avoid frequent equipment is stored for longer than 30 days special precautions must be taken to avoid coil coils should be charged and sealed with a low pressure (less than 25 psig) inert gas, such as prevents contaminates from entering the coils; then when the seal is broken at installation, the rushof escaping gas verifies the coil is still leak free. If coils are not charged and sealed condensation mixeswith air pollutants forming a weak acid and can cause pin hole leaks to develop in the coil equipment is installed after storage caution should be taken to inspect and replace, if required,rubber hoses. All moving parts, such as blowers and motors, should be hand tested to ensure that theyare free and clear prior to start-up.

8 Finally, verify that all lubrication is fresh and is the responsibility of the installing contractor to return the start-up sheet and warranty registrationcard to data Aire for proper activation of the unit warranty. Failure to do so may cause delays and insome cases void the Air Cooled Unit PipingRefer to the attached Line Sizing chart on page 24 for a guideline for sizing refrigerant lines. Theultimate responsibility for line size selection is that of the installing contractor or project engineer. DataAire does not assume this responsibility. The chart covers distances up to 200 equivalent feet. Forinstallations beyond this distance, consult ASHRAE or similar piping practice must be used to ensure proper oil return and efficient interconnecting lines to the remote air cooled condensing unit must be installed by aqualified refrigeration discharge, suction and liquid lines need to be refrigerant grade copper and in accordance withlocal code. All refrigeration piping should be installed with high temperature brazed joints.

9 When brazing,a supply of nitrogen gas needs to be fed through the refrigerant lines. Be sure to open the other end ofthe refrigerant line allowing the nitrogen to bleed off and not cause excess pressure Aire recommends a silver/phosphorus/copper alloy with between 5% and 15% silver be used tobraze refrigerant line set to the indoor and outdoor units. Nitrogen needs to be flowing through the linesto eliminate carbon deposit buildup on the inside of the joints which could contaminate the refrigerantand restrict the metering LinesLiquid line size is determined by pressure drop and velocity. The liquid line pressure drop should notexceed 5 PSI. The recommended velocity should be between 200 and 300 FPM. To avoid excessiveliquid line pressure drop, the air cooled condensing unit should be located above or at the same level asthe evaporator. Condensing unit installation more than ten feet below the evaporator should be LinesThis unit has the compressor in the condensing unit and requires field piping of liquid and suction lines are trapped similarly to discharge lines.

10 Common practice for suction line selection andinstallation should be Sizes, Air Cooled UnitsModelLiquidSuctionDACU 021/2"3/4"Note: Unit will have a Liquid Line andDACU 031/2"3/4" Suction LineDACU 041/2"3/4"DACU 051/2"3/4"Field connections at the indoor evaporator and remote condensing unit will not necessarily bethe same as the field pipe size required. In some cases these sizes will vary Field Piping, Remote Condensing Cooled Unit PipingThe required field installed condenser water pipe sizes may or may not be the same as the connectionsizes at the evaporator or fluid cooler. This will depend on the length of pipe and the calculated pressuredrop of peripheral water cooled condensing units may also be connected to building water or tower water size will depend on length of run and the maximum water flow valves should be installed within a few feet of the inlet and outlet connections of the evaporator toallow the unit to be isolated for service. A fill valve with a hose bib connection should also be used on thesupply line or return line at the unit to allow the unit to be cooled units with plate-fin type condensers ship with a strainer.