Liebert - TELECOMNETWORKS

ISO 9000

CERTIFIED

COMPANY

Deluxe System/3®

Chilled Water Systems

ENVIRONMENTAL CONTROL

TECHNICAL DATA MANUAL

K e e p i n g B u s i n e s s i n B u s i n e s sLiebert ®

®

50 Hz and 60 Hz

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Table of Contents

Liebert Technology and Energy Efficiency......................................................................3

Sensitive Electronics and Environmental Control..........................................................4

Standard Features..........................................................................................................5

Control Systems.............................................................................................................6

Optional Features...........................................................................................................8

Data (50 and 60 Hz)......................................................................................................10

Dimensional Data (50 and 60 Hz).................................................................................12

Upflow Duct Cocnnection Data...................................................................................14

Electrical Specifications...............................................................................................16

Guide Specifications....................................................................................................18

Installation/Application Guidelines..............................................................................22

*Not every option is availble on every model

Product Model InformationModel Number Designation

FH 529 C - A A E I

FH = Downflow Nominal C = Chilled – = Std Drive A = 460/3/60 A = Advanced 0 = No Reheat 0 = NoCapacity in Water Micro-processor Humidifier

Thousand BTU/H B = 575/3/60UH = Upflow V = Variable G = Advanced E = Electric I = Infrared

Speed Drive C = 208/3/60 Graphics Reheat HumidifierBlower Micro-processor

D = 230/3/60 H = Hot Water G = Steam GridReheat Humidifer

Z = 380/3/50T = Steam S = Steam

F = 380/3/50 Reheat GeneratingHumidifier

G = 415/3/50

H = 230/3/50

J = 200/3/50

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Liebert Technology andEnergy Efficiency

Energy Saving Option For OurLargest Chilled Water Units:

Models FH/UH600C, FH/UH599C, FH/UH740C & FH/UH739C are available with an optional variable-speeddrive on the fan motor, matching the motor speed to theroom cooling requirements. This feature allows the unit touse substantially less motor energy to move your room air.Many utility companies offer a rebate for using thisenergy-efficient feature—check with your local utilitycompany for details.

Liebert continues its worldleadership in precisionenvironmental systems byproviding maximum energyefficiency without compromis-ing the precision and reliabilitydemanded by sensitiveelectronic equipmentoperations.

Liebert makes nocompromise in its approachto environmental controlsystem design. Allenhancements to energyefficiency are designed toreduce operating time of keycomponents and increase theMean Time Between Failure.

Chilled Water

You can take advantage of an existing chilled water loop if the chilledwater is available year-round. The Liebert Deluxe System/3 provides airdistribution and microprocessor control and monitoring.

Downflow System

Chilled WaterSupply and Return

MotorizedThree-WayChilled WaterRegulating Valve

A-FrameCoil

Ductwork

Coil

Blower

Ductwork

Coil

Blower

Plenum

Filter

FrontofUnit

FrontofUnit

Upflow w/Rear Returnand Top Supply—CustomerDucted Supply & Return

Upflow w/FrontReturn and TopSupply—Optional Plenumw/Front DischargeGrill

Upflow Systems

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Call for Cooling

Val

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pen

or

Mo

tor

Sp

eed

or

Mo

tor

Po

wer

Co

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mp

tio

n

VSD Operation

CW Valve Operation

Motor Power Consumption

Note: The VSD adjusts to 100% speed during reheat and/or humidifier operation.

ENERGY SAVINGS VSD

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For sensitive electronics,environmental control ismore than simple cooling.“Comfort” air conditioningsystems are designed forthe comfort of people, andsimply cannot provide thekind of environment requiredby high performance com-puter or communicationequipment.

Temperature ControlThe high density heat loadin a computer room or othersimilar application is beyondthe capacity of ordinary airconditioning systems.Sensitive electronics arebest maintained in a stableenvironment of 72°F ±2°F(22.2°C ±1°C). As computersgenerate large quantities ofheat in small areas, six to tentimes the heat density ofnormal office space, the airconditioning system musthave more than just enoughcooling capacity. It must havethe precision to react quicklyto a drastic change in heatload and prevent widetemperature fluctuations –something a large buildingsystem cannot do.

Humidity ControlThe electronic equipmentmust be protected fromboth internal condensationand static electricitydischarges. Maintaining thecorrect humidity level in theroom is just as important asmaintaining proper tempera-ture. Too high a humidity levelcould cause condensationwithin the electronic equip-ment and the potential forhardware damage. If humidityis too low, static electricitycould disrupt operation oreven shut down the electronicsystem. An ordinary buildingsystem cannot normally con-trol the environment withinthese boundaries.

Dedicated, Precise Environmental Control...Essential for Sensitive Electronics

Air VolumeComputers and othersensitive electronics requiregreater air volumes thanordinary air conditioningcan provide. Typical comfortsystems are designed to pro-vide between 300 and 400CFM (Cubic Feet per Minute),(500–700 CMH) per ton ofcooling. Electronic systemsrequire between 500 and 600CFM (850–1020 CMH) perton. The high density heatload in a relatively small spacerequires more changes of airthan a less dense “comfort”application. While a normaloffice space requires only2 air changes per hour, aroom filled with electronicequipment requires up to30 changes per hour. Withoutproper air volume, hot spotsand temperature fluctuationscould develop within theroom. Also, greater air vol-umes provide the highersensible heat ratios requiredby electronic computerequipment.

Year Round OperationComfort conditioningsystems cannot be reliedupon 24 hours per day 365days per year. They aretypically designed to operateten hours per day, from Springto Autumn. Many “comfort”systems have no provision forwinter operation. A precisionenvironmental control systemand its supporting equipmentare designed for operation attemperatures of up to –30°F(–34.4°C).

PrecisionThe environmental controlsystem must be able to senseand react to temperature andhumidity fluctuations far toosmall for building HVAC sys-tems to control.

The Deluxe System/3 iscapable of control to within±1°F (°C) and ±1% RH.With Liebert microprocessortechnology, it is possible tomaintain predictive controlover the environment. Byanalyzing the rate of changein temperature or the moisturecontent in the environment,the control system anticipateswhat is going to happen in theroom, not simply respondingto what has happened.

ReliabilityBecause electronic systemavailability is required 24hours a day, 365 days a year,the environmental controlsystem must meet the samedemands.

The Deluxe System/3 isdesigned with the highestquality components selectedfor their proven reliability.Microprocessor technologyadds automatic sequencing ofcomponents to even wear andextend service life. Automaticcleaning cycles can be pro-grammed to match local waterconditions. An alarm systemand self-diagnostics providerapid troubleshooting and canprevent a problem before itaffects the electronic equip-ment room environment.

Energy EfficiencyConstant demand for preciseenvironmental control makesenergy efficiency all the moreimportant. A well-designedenvironmental control systemmakes the most of theenergy it uses.

The Deluxe System/3 isdesigned for maximumenergy efficiency. Highlyefficient fan motors pull airthrough the coil, providingnot only better coil coverage,but reducing fan motorhorsepower requirements. Amicroprocessor controlsystem ties all the keyoperational componentstogether and responds tochanges in the roomenvironment in the most“intelligent” and energyconscious way.

UL ListedUnits are UL listed and CSA(NRTL-C) certified. NRTL-Cmeets both U.S. andCanadian government safetyrequirements, providing fast,hassle-free inspection andbuilding code approvals.

Desirable Feature Building Systems Deluxe System/3

Precision Typically ±5°F(±3°C) ±1°F (±1°C)/1%RH

Humidity Control Usually None Humidificationand dehumidification

Monitoring None Local and remote

Year-Round Not designed for YesReliability winter operation

Air Filtration Negligible 20-65% based onASHRAE 52.1

Factory Tested No Yes

In-the-room No; centrally Yesdesign located

Features of a well designed environmental control system

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Standard Features

Cabinet and FrameThe frame, 14 gauge, heliarcwelded tubular steel, providesmaximum support while steelpanels with 1" (25.44mm), 11/2

lb. (.68 kg) insulation protectand quiet the system. Thecaptive, 1/4 turn fasteners allowcontrolled access for serviceand are positioned to enhancecabinet appearance. The topaccent panel may be openedfor service or system monitor-ing without turning off the unit.The frame is coated usingthe autophoretic® processfor corrosion protection. Allexterior panels are powdercoated for optimum durability.Each panel is available incolors to coordinate withthe decor of the space.

Fan SectionThe system features quiet,low speed fan assemblies withmultiple, double width, doubleinlet blowers, lifetime lubri-cated and self-aligning ballbearings and factory-certifieddynamic balance. The fanmotor features a manual resetline-break overload and ismounted on an industrialquality adjustable slide base.The two-belt variable pitchdrive may be field adjusted tomatch this fan speed to the airflow requirements of the datacenter. Fans are mounted on afan-deck weldment which canbe removed for service. Thedraw-through design of thefan section supplies even airdistribution across the A-framecoil, controlled bypass-airhumidification, static sealingof the filter section and lowinternal cabinet pressurelosses. With the dual beltsystem, fan operation isassured even if one of thebelts breaks.

High Voltage PanelThe high voltage panelcontains contactors, trans-formers, overloads, groundbars, and all other exposedhigh voltage components.Each individual high voltagesystem component is pro-tected by a separate over-current protective device.The entire high voltage panelis enclosed by a safety lockdead front panel. When thetop accent panel is openedby operating personnel, thesehigh voltage componentsremain enclosed by the deadfront panel for operator safety.

Infrared HumidifierHigh-intensity quartz lampsover the stainless steelhumidifier pan permit clean,particle-free vapor to be addedto the air within 5 to 6 secondsof the electronic call from themicroprocessor control. Thequartz lamps provide radiantenergy that evaporates waterin a pure state, without solids.

The Infrared Humidifier isequipped with an automaticwater supply system thatsignificantly reduces cleaningmaintenance. This system hasan adjustable water-over-feedto prevent mineral precipita-tion. A drain valve is providedto easily empty the humidifierpan prior to inspection orservicing. A control valveregulates flow properly atwater pressures between5 and 150 psig (34.5 and 1034kPa) and includes a Y strainer.

Electric ReheatThe three-stage stainless steelreheat elements are a rigid, fintubular design that haveextended operation life. Thereheat has ample capability tomaintain room dry-bulbconditions during a system callfor dehumidification.

Three equal stages givea more accurate, controlledresponse to the requirementsof the computer room. Thelow-watt density, electricallyenclosed elements aresurrounded by the tube andfins, reducing sheath temper-atures (420°F/215.5°C) andeliminating ionization. Thethree stages of reheat createa noticeable lowering ofenergy use.

FiltersThe standard deep-pleatedfilter with an efficiency of 20%(based on ASHRAE 52.1)can be changed quickly andeasily. Removal is througheither end of the system or thetop of the unit (downflow only).FH/UH599C, FH/UH600C andFH/UH739C, FH/UH740Cfilters are removable from thefront only.

A-Frame CoilThis large face area/low facevelocity coil allows precisecontrol of temperature andhumidity during the coolingand dehumidification mode,and is designed to optimizefluid velocity and minimizepressure drop. The full facearea is active during coolingand dehumidification, resultingin operational energy savingsin the data center. A stainlesssteel corrosion–free conden-sate pan is provided with theA-frame coil.

Chilled WaterControl ValveThe chilled water valveprovides proportional controlaction in response to roomtemperature and humidityas sensed by the micro-processor control. It includesoperating linkage and elec-tronic motor. Unlike othersystems of this nature itrequires no over–travellinkage or end switchesto be adjusted. The valve canbe a 3-way or 2-way to meetthe appropriate requirementsof the installed system.

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Local Monitoring Systems

Advanced Microprocessor (AM)Control System Backlit 4 x 20 LCD

Two levels of microprocessorcontrol systems are availableproviding precise control andmonitoring of the criticalspace. The AdvancedMicroprocessor is standard,and the Advanced Micropro-cessor w/Graphics is optional.The main control fuctions aresimilar for both controls:

ControlThe user must enter a3-digit password beforemaking changes.

• Temperature Setpoint 65-85°F (18-29°C)• Temperature Sensitivity +1-10°F (0.6-5.6°C)• Humidity Setpoint 20-80% R.H.*• Humidity Sensitivity 1-30% R.H.• High Temperature Alarm 35-90°F (2-32°C)• Low Temperature Alarm 35-90°F (2-32°C)• High Humidity Alarm 15-85% R.H.• Low Humidity Alarm 15-85% R.H.* Consult factory if you need to control at either end of this range.

Control TypeFactory set-up for IntelligentControl which uses “fuzzylogic” and “expert systems”methods. Proportional andTunable PID are user select-able options.

Internal SystemControl• System auto restart. The auto restart feature will automatically restart the system after a power failure. Time delay is programmable.• Sequential Load Activa- tion. On initial start-up or restart after power failure, each operational load is sequenced to minimize total inrush current.

• Hot Water / Econ-o-coil Flush Cycles. Hot water reheat coils are periodically flushed to prevent a build-up of contaminants.• Temperature/Humidity Sensor Calibration. The sensors may be calibrated from the front monitor panel to insure that all units in the room are similarly calibrated, assuring greater precision.

Monitoring• Normal display includes present room temperature and humidity, active functions (cooling, heating, dehumidifying), and any alarms.• Operating status displays each control operation in percent.• Read analog inputs function. Displays the present values of up to four analog inputs.

Diagnostics• Input diagnostics. Reviews inputs to the control system.• Control board diagnostics. Initiates a self-test of the control system.• Output diagnostics. Tests major components by turning them on and off from the control panel. Includes: main fan, chilled water valve, R-5 relay, reheat, hot water reheat valve, humidifier, humidifier make-up valve, and common alarm.

Logging• Alarm history log. The Advanced Microprocessor displays the 10 most recent alarms. The Advanced Microprocessor with Graphics displays the most recent 60 alarms. Both provide a time and date stamp for each event.• Run time log. Displays run time and hours for major components (also allows reset of run hours) including fan, humidifier, and reheat.

Alarms• Humidifier problem• Change filter• Loss of air flow• High temperature• Low temperature• High humidity• Low humidity• Main fan overload (opt)• Loss of power• Custom alarm (choose up to 4) • Water under floor • Smoke detected • Loss of water flow • Standby unit on • User customized text

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Optional Advanced Microprocessorw/Graphics (AG) Control SystemBacklit 240 x 128 dot matrix graphics display

OpenComms-NICThe OpenComms NetworkInterface Card (NIC) providesEthernet connectivity forLiebert equipment.Operating status and alarmsare communicated via thenetwork to external systemsutilizing industry-standardopen protocols.

The following protocols aresupported:

• SNMP v1, v2c• HTTP v1.1(web)

OpenComms OC-DOInterface Card provides 16discrete outputs, correspond-ing to status and majoralarm conditions. TheseForm-C contact-closuresprovide a straightforwardmeans to tie units to BMSCo. (Building ManagementSystems), I/O or alarm pan-els, and autodialer devices.

Dry contact monitors—RCM4, RCM8CELEDs display customizedalarm indication for any drycontact input, includingalarms for Liebert environ-mental, power and UPSsystems. RCM4 monitors anddisplays four dry contactpoints. The RCM8CE moni-tors and displays eight drycontacts; it can communi-cate with Liebert SiteScan,and also has modem dial-upcapabilities.

Single unit remotemonitoring—MR1Operating parameters for asingle environmental unit areselected with push-buttonsand displayed on an LCDscreen. This user-friendlysystem provides remotemonitoring and alarm warn-ing, for complete statusupdates.

The runtime screen provides datain either tabular or easy-to-readgraphic formats.

Histograms–historical depictions–oftemperature or humidity can bedisplayed on the screen for anal-ysis. This is especially helpful intracking the environmental factorsof an alarm.

If you have a Liebert water detectionsystem in the room, the display canprovide a floorplan for fast location oftrouble spots.

Some of the Optional Views withAdvanced Graphics:

In addition to LocalMonitoring, the followingoptional remote monitoringsystems are available:

Site ScanSiteScan is a monitoringsolution for critical environ-ments that utilize afacility-view approach. Thesystem enables communica-tions from Liebert environ-mental and power units -- aswell as many other pieces ofanalog or digital equipment-- to a front end softwarepackage which providesmonitoring, control andalarm management.SiteScan monitoring givesyou decision-making powerto effectively manage theequipment that is critical toyour business. Designedwith flexibility for large,complex systems as well assmaller single-site facilities,the Liebert SiteScan line ofproducts can provide real-time status and alarms.

SiteLinkThe microprocessor-basedmodule provides two-waycommunication betweenexisting building managementsystem and up to 12 Liebertunits via MODBUS or BACnet.

Remote Monitoring Systems

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Optional Features*

Chilled WaterFlow SwitchThe flow switch will activatethe alarm system and/or shutdown the system should thechilled water supply beinterrupted. The switch isfactory wired and mountedin the chilled water valvecompartment.

High PressureFor special applications, a highpressure, modulating 3-way or2-way valve can be provided.The valve is designed for 150-400 PSIG (1034 to 2756 kPa)water pressure.

Energy SavingFeatureVariable SpeedDrive (VSD)The VSD is available on theFH/UH600C, FH/UH599C,FH/UH740C and FH/UH739C.This drive is controlled by theAdvanced MicroprocessorControl to match the speed ofthe blower with the chilledwater valve position andconsequently the load in theroom. This option eliminatesexcessive energy use due toan oversized design orchanging room conditions.

High Efficiency Filters*Four optional filters areavailable in lieu of standardpackage. A 30%, 40-45% or60-65% filter may be speci-fied. (Efficiency based onASHRAE 52.1) 25% pre-filtersmay also be specified.80-85%, 90-95% filtersavailable on FH/UH600/740Cand 599/739C.

High External StaticBlower Systems forUpflow Units(120" unit only)Various blower/motor combi-nations are available to providestandard airflow and coolingcapacity with up to 3" ofexternal static pressure.

Heavy Gauge Panels(120" unit only)16 gauge external panels foruse on higher esp systems.Extra 1/4 turn fasteners areprovided on end panels.

Leak DetectionZone detectors with cable, orsingle point detectors, providefast and accurate indicationof fluid in your critical space.These systems communicatewith your Deluxe unit or witha separate monitoring system.

Area leak detection cablewith distance measurementand monitoring protects yourentire computer room. Thissystem quickly and accuratelycalculates and displays thelocation of fluid on the cable,allowing you to promptly findand correct a leak.

Steam GridHumidifierThe steam humidifier canbe easily adapted into thebuilding’s steam system.Contains a stainless steeljacketed manifold to ensuredry steam.

Steam GeneratingHumidifierClean, pure steam is generatedin a disposable canister whichis complete with supply anddrain valves, electroniccontrols and steam distributor.The humidifier is providedwith an automatic flush cycleto lengthen service life. Anindicator on the monitor panelis activated when the canistershould be changed. Canisterlife and humidifier operationare functions of waterconductivity.

Temperature andHumidity RecorderA seven-day temperature andhumidity recorder provides apermanent record of theenvironmental control system’soperational efficiency. Thesystem includes 2 pens, 100recording charts, 1 red and1 blue bottle of recording ink.

* Some options or combination of optionsmay result in reduced air flow. Consultfactory for recommendations.

High Efficiency Filters

Liqui-Tech Water Detection

Plenum with grille

Steam GeneratingHumidifier

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FirestatThe firestat senses return airtemperature of the system.Upon sensing high temper-atures, the environmentalcontrol system is shut down.Required by codes in certainareas.

Floorstand*Available in heights from9" to 24" (230 to 610 mm)in 3" (76 mm) increments,adjustable ± 11/2

" (40mm).Allows for installation andconnection of the system priorto the installation of the raisedfloor. A modular, field installedturning vane may be specified.

Smoke DetectorUpon sensing the presence ofsmoke in the data center, thesmoke detector will activatethe alarm system and shutdown the environmentalcontrol system.

Condensate PumpThe condensate pump ismounted in the bottom ofthe system and is completewith sump, motor, pump andautomatic control. Carriesa minimum capacity of 20feet (58 kPa) of head.(Consult factory for 200Vor 230V, 50 Hz.)

Disconnect Switch—LockingThe Locking disconnect switchinterlocks with the dead-frontpanel which cannot be openeduntil the switch is in the OFFposition.

Disconnect Switch—Non-LockingThe disconnect operatinghandle protrudes through thefront of the system for easyaccess.

Hot Water/Steam Reheat*Controlled by a modulating,two-way valve from themicroprocessor controlpanel, these economicalreheats have the capacity tomaintain dry bulb conditionswhen the system is calling fordehumidification. The systemis completely pre-piped andincludes a modulating controlvalve and Y-strainer. Thereheat coil is constructedof copper tubes andaluminum fins.

Plenums for UpflowUnits*Standard heights of 20", 22 3/4"and 34 3/4" (51, 58 and 88cm).They are available with a frontdischarge grille for air distribu-tion within the installed space,and with a top opening for useas a decorative plenum toconceal ductwork off theblowers.

Auto-ChangeoverControlUp to eight environmentalunits can be automaticallyand centrally controlled foremergency switching and tobalance unit runtime. The AC3controls two or three units.RAC2-8 controls two througheight units.

Disconnect Switch(Locking & Non-Locking)

Condensate Pump

Firestat

Floorstand withturning vane

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Data – 50 & 60 Hz Systems

FH/UH147C FH/UH200C FH/UH248C FH/UH302C FH/UH376C FH/UH422C FH/UH529C FH/UH600C (60 Hz) FH/UH740C (60Hz)FH/UH599C (50 Hz) FH/UH739C (50 Hz)

CAPACITY DATA BTU/HR (kW) {BASED ON 45°F (7.2°C) ENTERING WATER, 10°F (5.6°C) TEMPERATURE RISE}

80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) 50% RH

Total 147,000 (43.1) 199,800 (58.6) 251,900 (73.8) 301,500 (88.4) 381,600 (111.8) 421,100 (123.4) 536,600 (157.3) 599,500 (175.7) 739,000 (216.6)

Sensible 109,600 (32.1) 144,300 (42.3) 168,800 (49.5) 219,600 (64.4) 257,300 (75.4) 302,900 (88.8) 358,900 (105.2) 427,100 (125.2) 492,800 (144.4)

Flow Rate– 29.4 (1.85) 39.9 (2.52) 50.3 (3.17) 60.3 (3.80) 76.3 (4.81) 84.2 (5.31) 107.2 (6.75) 119.9 (7.5) 147.4 (9.2)GPM (Vs)

Press. Drop– 16.4 (112.8) 13.1 (90.1) 12.4 (85.6) 12.9 (88.9) 9.8 (67.6) 11.2 (77.3) 20.7 (142.7) 16.2 (111.3) 34.2 (235.8)PSI (kPa)

75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH

Total 109,600 (32.1) 148,400 (43.5) 188,400 (55.2) 224,700 (65.9) 285,600 (83.7) 312,600 (91.6) 401,300 (117.6) 444,800 (130.3) 553,600 (162.2)

Sensible 94,900 (27.8) 123,900 (36.3) 143,700 (42.1) 189,100 (55.4) 219,400 (64.3) 259,900 (76.2) 305,500 (89.5) 365,800 (107.2) 419,500 (122.9)

Flow Rate– 21.9 (1.38) 29.7 (1.87) 37.6 (2.37) 45.0 (2.84) 57.1 (3.60) 62.6 (3.95) 80.1 (5.05) 89.2 (5.6) 110.4 (6.9)GPM (Vs)


75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH

Total 99,100 (29.0) 135,000 (39.6) 170,800 (50.0) 199,600 (58.5) 259,100 (75.9) 284,200 (83.3) 363,800 (106.6) 404,100 (118.4) 501,300 (146.9)

Sensible 99,100 (29.0) 127,600 (37.4) 146,000 (42.8) 199,600 (58.5) 223,200 (65.4) 267,500 (78.4) 310,200 (90.9) 376,200 (110.2) 425,200 (124.6)

Flow Rate– 19.8 (1.25) 27.0 (1.70) 34.1 (2.15) 39.6 (2.5) 51.8 (3.26) 56.8 (3.58) 72.7 (4.58) 80.8 (5.1) 100.1 (6.3)GPM (Vs)


72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total 88,200 (25.9) 121,300 (35.6) 154,200 (45.2) 184,000 (53.9) 234,100 (68.6) 255,400 (74.9) 328,400 (96.7) 363,000 (106.4) 452,900 (132.7)

Sensible 88,200 (25.9) 112,200 (32.9) 129,000 (37.8) 171,500 (50.3) 197,300 (57.8) 235,300 (68.8) 274,200 (80.4) 330,900 (96.9) 376,000 (110.2)

Flow Rate– 17.6 (1.11) 24.3 (1.53) 30.8 (1.94) 36.8 (2.32) 46.8 (2.95) 51.1 (3.22) 65.6 (4.13) 72.6 (4.5) 90.5 (5.7)GPM (Vs)


72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total 85,300 (25.0) 113,100 (33.1) 139,700 (40.9) 172,300 (50.5) 212,300 (60.0) 237,600 (69.6) 297,300 (87.1) 335,600 (98.3) 408,500 (119.7)

Sensible 85,300 (25.0) 113,100 (33.1) 131,500 (38.5) 172,300 (50.5) 201,500 (59.0) 237,600 (69.6) 279,200 (81.8) 335,600 (98.3) 380,800 (111.6)

Flow Rate– 17.1 (1.08) 22.6 (1.43) 28.0 (1.77) 34.4 (2.17) 42.5 (2.68) 47.5 (3.00) 59.6 (3.75) 67.0 (4.2) 82.3 (5.1)GPM (Vs)


OPTIONAL AIRFLOW CAPACITY DATA

75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH

Total 118,300 (34.7) 152,600 (45.7) 198,500 (58.2) 236,300 (69.3) 307,900 (90.2) N/A N/A N/A N/A

Sensible 102,900 (30.2) 127,600 (37.4) 151,300 (44.3) 199,600 (58.5) 236,500 (69.3) N/A N/A N/A N/A

Flow Rate– 23.7 (1.50) 30.5 (1.92) 39.7 (2.50) 47.3 (2.98) 61.5 (3.87) N/A N/A N/A N/AGPM (Vs)

Press. Drop– 10.9 (74.9) 8.0 (54.9) 8.1 (55.8) 8.3 (57.0) 6.6 (45.5) N/A N/A N/A N/APSI (kPa)

75°F DB, 61°F WB (23.9°C DB, 16.1°C WB) 45% RH

Total 107,200 (31.4) 138,800 (40.7) 180,100 (52.8) 209,800 (61.5) 278,500 (81.6) N/A N/A N/A N/A




72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total 95,300 (27.9) 124,700 (36.5) 162,400 (47.6) 193,500 (56.7) 252,300 (73.9) N/A N/A N/A N/A




72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total 92,200 (27.0) 116,300 (34.1) 147,300 (43.1) 181,600 (53.2) 229,100 (67.1) N/A N/A N/A N/A




FH= downflow UH= Upflow

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2 (13.8) 4 (27.6) 5 (34.5) 6 (41.4) 8 (55.2) 10 (68.9)8 (3.6) 12 (5.4) 14 (6.4) 16 (7.3) 19 (8.6) 21 (9.5)

* 2 1/8* on FH600C FH599C

2 5/8* on UH600C UH599C

**

FH/UH147C FH/UH200C FH/UH248C FH/UH302C FH/UH376C FH/UH422C FH/UH529C FH/UH600C (60 Hz) FH/UH740C (60 Hz)FH/UH599C(50 Hz) FH/UH739C(50 Hz)

Fan Section–Variable Pitch, Two (2) Belt Drive Package* (*Some options or combination of options may result in reduced air flow. Consult factory for recommendation.)

Air Volume C.F.M. (CMH) 5250 (8920) 6050 (10,280) 5900 (10,020) 9300 (15,800) 9100 (15,460) 12,500 (21,240) 12,400 (21,070) 17,100 (29,070) 16,500 (28,050)

Fan Motor H.P. (kW) 2.0 (1.49) 3.0 (2.24) 3.0 (2.24) 5.0 (3.73) 5.0 (3.73) 7.5 (5.59) 7.5 (5.59) 10 (7.57) 10 (7.57)

Optional Air Volume C.F.M. (CMH) 5825 (9,900) 6275 (10,660) 6275 (10,660) 9950 (16,910) 9950 (16,910) -- -- -- --

Optional Fan Motor H.P. (kW) 3.0 (2.24) 5.0 (3.73) 5.0 (3.73) 7.5 (5.59) 7.5 (5.59) -- -- -- --

Ext. Static Press. inches of water (Pa) .3 (75) .3 (75) .3 (75) .3 (75) .3 (75) .3 (75) .3 (75) .3 (75) .3 (75)

Quantity of Fans 1 1 1 2 2 2 2 3 3

Chilled Water Coil

Face Area sq. ft. (m2) 11.7 (1.08) 11.7 (1.08) 11.7 (1.08) 18.5 (1.72) 18.5 (1.72) 25.0 (2.32) 25.0 (2.32) 36.28 (3.37) 36.28 (3.37)

No. of Rows 3 4 6 4 6 4 6 4 6

Face Velocity FPM (m/s) 431 (2.2) 499 (2.5) 486 (2.4) 482 (2.4) 471 (2.4) 484 (2.5) 480 (2.4) 471 (2.3) 460 (2.3)

Chilled Water Controls (Maximum design water pressure 150 PSI (1034.3 KPa). Higher pressure available as an option. Consult factory)

Valve Actuator Modulating Modulating Modulating Modulating Modulating Modulating Modulating Modulating Modulating

Sensors Proportional Proportional Proportional Proportional Proportional Proportional Proportional Proportional Proportional

Valve Body 3-Way 3-Way 3-Way 3-Way 3-Way 3-Way 3-Way 3-Way 3-Way

Valve Cv 11.6 11.6 28.9 28.9 46.2 46.2 46.2 46.2 46.2

Valve Size–inches 1 1 1/4 1 1/2 1 1/2 2 2 2 2 2

2-Way Valve (0ptional) 150 (1034) 150 (1034 72 (496) 72 (496)) 42 (290) 42 (290) 42 (290) 42 (290) 42 (290)Close Off Pressures-PSI (kPa)

REHEAT SECTION

Electric Reheat–Three (3) Stage, Fin Tube

Capacity BTU/HR (kW)* 39,200 (10) 58,800 (15) 58,800 (15) 81,000 (20) 98,100 (25) 121,500 (30) 121,500 (30) 127,900 (30) 127,900 (30)

Steam Reheat–218°F (103.3°C) Steam, 75°F (23.9°C) E.A.T., STD MTR–Modulating Control Valve 2-way****†

Capacity BTU/HR (kW)* 84,100 (24.6) 85,800 (25.1) 85,800 (25.1) 93,400 (27.4) 144,500 (42.4) 163,200 (47.8) 163,200 (47.8) 171,7 00 (50.3) 171,700 (50.3)

Hot Water Reheat–Capacity @ 180°F (82.2°C) E.W.T., STD MTR 75°F (23.8°C) E.A.T.–Modulating Control Valvez 2-way****†

Capacity BTU/HR (kW)* 47,000 (13.7) 49,500 (14.5) 49,500 (14.5) 89,900 (26.3) 89,900 (26.3) 125,200 (36.7) 125,200 (36.7) 133,700 (39.2) 133,700 (39.2)

Flow Rate–GPM (Vs) 5 (.31) 5 (.31) 5 (.31) 8 (.50) 8 (.50) 8 (.50) 8 (.50) 8 (.50) 8 (.50)

Pressure Drop–PSI (kPa) 3.5 (24.1) 3.5 (24.1) 3.5 (24.1) 1.6 (11.0) 1.6 (11.0) 1.6 (11.0) 1.6 (11.0) 1.6 (11.0) 1.6 (11.0)

* Includes Fan Motor ** Optional 3-Way valve available–consult factory *** 25 PSI (172.4 kPa) Max operating pressure–consult factory for higher pressures.† Unit CFM reduced by 300 with std. motor (142 Vs) **** 150 PSI (1034.3 kPa) Max operating pressure–consult factory for higher pressures.

HUMIDIFIER SECTION

Infrared Humidifier ➣Note: 50 Hz Models are 22.1 lbs/hr. (10.0 kg/h); 9.6 KW.

Capacity–Lbs. Per Hr. (kg/h) 11.0 (5.0) 11.0 (5.0) 11.0 (5.0) 17.4 (7.9) ➣ 17.4 (7.9) ➣ 22.1 (10.0) 22.1 (10.0) 22.1 (10.0) 22.1 (10.0)

KW 4.8 4.8 4.8 6.4 ➣ 6.4 ➣ 9.6 9.6 9.6 9.6

Pan Stainless Stainless Stainless Stainless Stainless Stainless Stainless Stainless Stainless

Steam Generating Humidifier (Water conductivity between 200-500 micromhos is required for ideal operation)

Capacity–Lbs. Per Hr. (kg/h) 11 (5.0) 11 (5.0) 11.0 (5.0) 22 (10.0) 22 (10.0) 22 (10.0) 22 (10.0) 22 (10.0) 22 (10.0)

Capacity–kW 3.6 3.6 3.6 7.2 7.2 7.2 7.2 7.2 7.2

Steam Grid Humidifier–All Models (Standard Selection, 5 PSIG. (34.5 kPa) Steam 14 lbs./hr. (6.4 kg/h) )

Supply Steam Pressure–PSIG (kPa)Capacity, Lbs Per Hr. (kg/h) w/ 5/32* orifice

FILTER SECTION–DISPOSABLE TYPE—Nominal Sizes and Quantities (See p.9 for efficiencies)

Downflow Models

Nominal Size (in) 18x24 18x24 18x24 18x24 18x24 18x24 18x24 24x31 24x31

Quantity 4 4 4 6 6 8 8 5 5

Upflow Models (Front Return)


Quantity 2 2 2 3 3 4 4 10 10

Upflow Models (Bottom & Rear Return) Bottom Return not available on UH600/740C


Quantity 4 4 4 6 6 8 8 10 10

CONNECTION SIZES

Chilled Water–O.D. Copper 1 1/8 1 3/8 1 5/8 1 5/8 2 1/8 2 1/8 2 1/8 2 1/8* * 2 5/8

Infrared Humidifier–O.D. Copper 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4

Condensate Drain–FPT 3/4 3/4 3/4 3/4 3/4 3/4 3/4 1 1/4 1 1/4

Steam Reheat–MPT 1/2 1/2 1/2 1/2 3/4 3/4 3/4 3/4 3/4

Hot Water Reheat–O.D. Copper 5/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8

Steam Humidifier–MPT 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2

WEIGHT–LBS (KG)– 810 (367) 845 (383) 895 (406) 1140 (517) 1210 (549) 1390 (630) 1490 (676) 1950 (885) 2090 (949) Installed

**

– 12 –

Dimensional Data – 50 & 60 Hz SystemsFH/UH147C – FH/UH529C

Notes1. Standard nominal plenum heights are 20" (510mm), 22 3/4

(578mm) and 34 3/4 (883mm) 22 3/4 minimum is required forvertical units with steam reheat, hot water reheat, or steamhumidifier options.

2. Provide approximately 34" service clearance on the left,right and in front of the unit whenever possible but in tightsituations the minimum requirements are listed below.

MINIMUM SPACE REQUIRED–IN. (MM)

DOWNFLOW UPFLOW

FRONT 24 (610) 24 (610)

LEFT 0 18 (457)*

RIGHT 0 18 (457)*

This space is necessary to provide for routine service suchas: 1) replacing filters, 2) adjusting the fan speed, and 3)cleaning the humidifier. FH/UH600C, FH/UH599C, FH/UH740C,and FH/UH739C, are totally front accessible including anycomponent removal.

Plenum w/Top Duct CollarFor Upflow Models

Plenumw/Grillfor Upflow Models

Temperature/Humidity Recorder

H

E Optional Turning Vane

H

E

9"-24" in 3" increments (229-610mm)adjustable +1.5" (38mm)-

Optional Turning Vane

For all 48", 72" and 97"long floorstands

For all 120"long floorstands

CHILLED WATER A B C* D E F G HFH/UH147C, 50 (1270) 72 (1829) 35 (889) 34 (864) 33 (838) 32 (813) 46 (1168) 48 (1219)200C, 248CFH/UH302C 74 (1880) 72 (1829) 35 (889) 34 (864) 33 (838) 32 (813) 70 (1778) 72 (1829)FH/UH376C 74 (1880) 72 (1829) 35 (889) 34 (864) 33 (838) 32 (813) 70 (1778) 72 (1829)FH/UH422C 99 (2515) 72 (1829) 35 (889) 34 (864) 33 (838) 32 (813) 95 (2413) 97 (2464)FH/UH529C 99 (2515) 72 (1829) 35 (889) 34 (864) 33 (838) 32 (813) 95 (2413) 97 (2464)

*Projection of bezel 5/8".

- 13 -

Dimensional Data – 50 & 60 Hz SystemsFH/UH599C – FH/UH740C

– 14 –

FRONT OF UNIT

BLOWER DUCT FLANGE LOCATION—One Fan

FRONT OF UNIT

BLOWER DUCT FLANGE LOCATION—Two Fan

Upflow Duct Connection DataUH147C – UH529C

Number Model No. Dimensional Data—inches (mm)of Chilled

A B C D E F G H JBlowers Water

1 UH147C 15 7/8 (403) 18 5/8 (473) 2 3/16 (55) 17 7/8 (454) - 50 (1270) 35 (889) 44 (1118) 18 (457)

1 UH200C 15 7/8 (403) 18 5/8 (473) 2 3/16 (55) 17 7/8 (454) - 50 (1270) 35 (889) 44 (1118) 18 (457)

1 UH248C 15 7/8 (403) 18 5/8 (473) 2 3/16 (55) 17 7/8 (454) - 50 (1270) 35 (889) 44 (1118) 18 (457)

2 UH302C 15 7/8 (403) 14 5/8 (371) 2 3/16 (55) 20 3/8 (517) 11 1/4 (288) 74 (1880) 35 (889) 68 (1727) 20 (508)

2 UH376C 15 7/8 (403) 14 5/8 (371) 2 3/16 (55) 20 3/8 (517) 11 1/4 (288) 74 (1880) 35 (889) 68 (1727) 20 (508)

2 UH422C 15 7/8 (403) 18 5/8 (473) 3 1/4 (82) 20 5/8 (524) 12 5/8 (321) 99 (2515) 35 (889) 86 (2184) 18 (457)

2 UH529C 15 7/8 (403) 18 5/8 (473) 3 1/4 (82) 20 5/8 (524) 12 5/8 (321) 99 (2515) 35 (889) 86 (2184) 18 (457)

Duct Connection DataModels with Rear Return

21/8" (54mm)

H

FLANGE PROVIDEDON BLOWER OUTLET FOR

SUPPLY AIR DUCTING.

1" (25.4mm) FLANGEFOR DECORATIVE

PLENUM ALIGNMENT

AIR RETURNOPENING

4"(102mm)

J

- 15 -

Blower Duct & Deck Dimensional DataUH599C – UH740C

Model Blower Supply Motor Dimensional Data HP A B C D E F

UH599C

UH739C

UH600C

UH740C

15X15TOP FRONT

TOP REAR

10-15

10-15

27 1/2 (699)

27 1/2 (699)

3 1/2 (89)

12 5/16 (313)

18 11/16 (475)

18 11/16 (475)

16 3/16 (411)

16 3/16 (411)

10 (254)

10 (254)

4 1/2 (114)

4 1/2 (114)

Note: Only 120" Upflow hasrear return filter box

76" REF

– 16 –

Electrical Specifications – 50 Hz Systems

Indoor Evaporator Fan Motor Electrical Requirements

Volts 200 230 380-415

2.0 HP FLA 7.0 6.1 3.5

3.0 HP FLA 10.1 8.8 5.1

5.0 HP FLA 15.8 13.7 7.9

7.5 HP FLA 25.1 21.8 12.5

10.0 HP FLA 30.2 27.6 15.1

15.0 HP FLA 46.2 42.0 24.2

20.0 HP FLA NA NA 30.0

1) Refer to General Data Section for standard fan motor size on units.

2) FLA = FULL LOAD AMPS

1) FLA = FULL LOAD AMPS2) Amperage requirements are based on the rated max FLA current of each component in the unit. The rated max FLA current of the unit is not the sum

total of all components, but is the total of the components which operate during maximum electrical load conditions.3) The values in the chart are for power demand of the FH/UH unit only.4) Units are 3 phase, 50 cycle.5) For units with other variations not listed above, consult factory engineering department for electrical requirements.

Chilled Water Models - 50 HZ

Reheat Options ELECTRIC None ELECTRIC None

Humidifier Options IR/SGH IR/SGH STM OR NONE STM OR NONE

Models / Motor HP Volts 2 0 0 2 3 0 380-415 2 0 0 2 3 0 380-415 2 0 0 2 3 0 380-415 2 0 0 2 3 0 380-415

FH/UH147C 2.0 HP FLA 46.7 43.4 24.3 19.8 17.2 9.9 33.9 32.3 17.9 7.0 6.1 3.53.0 HP FLA 49.8 46.1 25.9 22.9 19.9 11.5 37.0 35.0 19.5 10.1 8.8 5.1







FH599C 10.0 HP FLA 131.7 128.4 71.2 55.6 49.8 27.9 106.3 106.2 58.4 30.2 27.6 15.115.0 HP FLA 147.1 142.4 78.9 71.0 63.8 35.6 121.7 120.2 66.1 45.6 41.6 22.820.0 HP FLA 161.5 152.8 86.1 85.4 74.2 42.8 136.1 130.6 73.3 60.0 52.0 30.0

FH739C 10.0 HP FLA 131.7 128.4 71.2 55.6 49.8 27.9 106.3 106.2 58.4 30.2 27.6 15.115.0 HP FLA 147.1 142.4 78.9 71.0 63.8 35.6 121.7 120.2 66.1 45.6 41.6 22.820.0 HP FLA 161.5 152.8 86.1 85.4 74.2 42.8 136.1 130.6 73.3 60.0 52.0 30.0

- 17 -

Electrical Specifications – 60 Hz Systems

Chilled Water Models - 60 HZReheat Options Electric None Electric None

Humidifier Options Infra-red or Steam Generating Infra-red or Steam Generating Steam or None Steam or NoneModels / Motor HP Volts 208 230 460 575 208 230 460 575 208 230 460 575 208 230 460 575

FH/UH147C2.0 HP

FLA 48.6 44.1 22.4 20.1 20.8 17.9 9.2 10.1 35.3 33.0 16.6 12.7 7.5 6.8 3.4 2.7WSA 60.8 55.1 28.0 25.1 26.0 22.4 11.5 12.6 44.1 41.3 20.8 15.9 9.4 8.5 4.3 3.4MFCB 60 50 25 30 30 25 15 15 40 40 20 15 15 15 15 15

3.0 HPFLA 51.7 46.9 23.8 21.3 23.9 20.7 10.6 11.3 38.4 35.8 18.0 13.9 10.6 9.6 4.8 3.9WSA 64.6 58.6 29.8 26.6 29.9 25.9 13.3 14.1 48.0 44.8 22.5 17.4 13.3 12.0 6.0 4.9MFCB 60 50 25 30 35 30 15 15 50 45 20 15 20 20 15 15

FH/UH200C3.0 HP

FLA 65.5 59.8 30.3 26.4 23.9 20.7 10.6 11.3 52.2 48.7 24.5 19.0 10.6 9.6 4.8 3.9WSA 81.9 74.8 37.9 33.0 29.9 25.9 13.3 14.1 65.3 60.9 30.6 23.8 13.3 12.0 6.0 4.9MFCB 90 80 40 35 35 30 15 15 60 70 35 20 20 20 15 15

5.0 HPFLA 71.6 65.4 33.1 28.6 30.0 26.3 13.4 13.5 58.3 54.3 27.3 21.2 16.7 15.2 7.6 6.1WSA 89.5 81.8 41.4 35.8 37.5 32.9 16.8 16.9 72.9 67.9 34.1 26.5 20.9 19.0 9.5 7.6MFCB 90 80 40 35 50 45 20 20 70 70 35 25 35 30 15 15

FH/UH248C3.0 HP

FLA 65.5 59.8 30.3 26.4 23.9 20.7 10.6 11.3 52.2 48.7 24.5 19.0 10.6 9.6 4.8 3.9WSA 81.9 74.8 37.9 33.0 29.9 25.9 13.3 14.1 65.3 60.9 30.6 23.8 13.3 12.0 6.0 4.9MFCB 90 80 40 35 35 30 15 15 60 70 35 20 20 20 15 15

5.0 HPFLA 71.6 65.4 33.1 28.6 30.0 26.3 13.4 13.5 58.3 54.3 27.3 21.2 16.7 15.2 7.6 6.1WSA 89.5 81.8 41.4 35.8 37.5 32.9 16.8 16.9 72.9 67.9 34.1 26.5 20.9 19.0 9.5 7.6MFCB 90 80 40 35 50 45 20 20 70 70 35 25 35 30 15 15

FH/UH302C5.0 HP

FLA 98.8 89.9 46.7 39.7 43.3 37.4 20.5 19.6 72.2 67.7 33.8 26.2 16.7 15.2 7.6 6.1WSA 123.5 112.4 58.4 49.6 54.1 46.8 25.6 24.5 90.3 84.6 42.3 32.8 20.9 19.0 9.5 7.6MFCB 125 110 60 50 60 50 30 25 90 80 40 30 35 30 15 15

7.5 HPFLA 106.3 96.7 50.1 42.6 50.8 44.2 23.9 22.5 79.7 74.5 37.2 29.1 24.2 22.0 11.0 9.0WSA 132.9 120.9 62.6 53.3 63.5 55.3 29.9 28.1 99.6 93.1 46.5 36.4 30.3 27.5 13.8 11.3MFCB 125 110 60 50 80 70 35 30 100 100 50 40 50 45 20 20

FH/UH376C5.0 HP

FLA 112.7 102.9 53.2 44.7 43.3 37.4 20.5 19.6 86.1 80.7 40.3 31.2 16.7 15.2 7.6 6.1WSA 140.9 128.6 66.5 55.9 54.1 46.8 25.6 24.5 107.6 100.9 50.4 39.0 20.9 19.0 9.5 7.6MFCB 150 125 70 60 60 50 30 25 110 110 50 40 35 30 15 15

7.5 HPFLA 120.2 109.7 56.6 47.6 50.8 44.2 23.9 22.5 93.6 87.5 43.7 34.1 24.2 22.0 11.0 9.0WSA 150.3 137.1 70.8 59.5 63.5 55.3 29.9 28.1 117.0 109.4 54.6 42.6 30.3 27.5 13.8 11.3MFCB 150 125 80 60 80 70 35 30 110 110 50 45 50 45 20 20

FH/UH422C7.5 HP

FLA 129.9 122.8 61.7 50.7 50.8 44.2 22.6 20.6 103.3 100.6 50.1 39.1 24.2 22.0 11.0 9.0WSA 162.4 153.5 77.1 63.4 63.5 55.3 28.3 25.8 129.1 125.8 62.6 48.9 30.3 27.5 13.8 11.3MFCB 175 150 80 60 80 70 35 30 125 125 60 50 50 45 20 20

10.0 HPFLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20

FH/UH529C7.5 HP

FLA 129.9 122.8 61.7 50.7 50.8 44.2 22.6 20.6 103.3 100.6 50.1 39.1 24.2 22.0 11.0 9.0WSA 162.4 153.5 77.1 63.4 63.5 55.3 28.3 25.8 129.1 125.8 62.6 48.9 30.3 27.5 13.8 11.3MFCB 175 150 80 60 80 70 35 30 125 125 60 50 50 45 20 20

10.0 HPFLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20

FH/UH600C10.0 HP

FLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20

15.0 HPFLA 151.9 142.8 71.7 58.7 72.8 64.2 32.6 28.6 125.3 120.6 60.1 47.1 46.2 42.0 21.0 17.0WSA 189.9 178.5 89.6 73.4 91.0 80.3 40.8 35.8 156.6 150.8 75.1 58.9 57.8 52.5 26.3 21.3MFCB 200 175 90 70 125 110 50 45 175 150 80 60 100 90 45 35

20.0 HP(UH only)

FLA 165.1 154.8 77.7 63.7 86.0 76.2 38.6 33.6 138.5 132.6 66.1 52.1 59.4 54.0 27.0 22.0WSA 206.4 193.5 97.1 79.6 107.5 95.3 48.3 42.0 173.1 165.8 82.6 65.1 74.3 67.5 33.8 27.5MFCB 225 200 110 90 150 125 70 60 200 200 90 70 125 110 60 45

FH74/UH0C10.0 HP

FLA 136.5 128.8 64.7 52.7 57.4 50.2 25.6 22.6 109.9 106.6 53.1 41.1 30.8 28.0 14.0 11.0WSA 170.6 161.0 80.9 65.9 71.8 62.8 32.0 28.3 137.4 133.3 66.4 51.4 38.5 35.0 17.5 13.8MFCB 175 150 80 60 90 80 40 35 125 125 70 50 60 60 30 20

15.0 HPFLA 151.9 142.8 71.7 58.7 72.8 64.2 32.6 28.6 125.3 120.6 60.1 47.1 46.2 42.0 21.0 17.0WSA 189.9 178.5 89.6 73.4 91.0 80.3 40.8 35.8 156.6 150.8 75.1 58.9 57.8 52.5 26.3 21.3MFCB 200 175 90 70 125 110 50 45 175 150 80 60 100 90 45 35

20.0 HP(UH only)

FLA 165.1 154.8 77.7 63.7 86.0 76.2 38.6 33.6 138.5 132.6 66.1 52.1 59.4 54.0 27.0 22.0WSA 206.4 193.5 97.1 79.6 107.5 95.3 48.3 42.0 173.1 165.8 82.6 65.1 74.3 67.5 33.8 27.5MFCB 225 200 110 90 150 125 70 60 200 200 90 70 125 110 60 45

1) FLA = FULL LOAD AMPSWSA = WIRE SIZING AMPS(Minimum supply circuit ampacity)MFCB = Maximum Fuse orCircuit Breaker Size

2) Amperage requirements are basedon the rated max FLA current of eachcomponent in the unit. The rated maxFLA current of the unit is not the sumtotal of all components, but is the totalof the components which operateduring maximum electrical loadconditions.

3) The values in the chart are forpower of the FH/UH unit only.

4) Units are 3 phase, 60 cycle.5) For units with other variations

not listed above, consult factoryengineering department forelectrical requirements.

Indoor Evaporator Fan Motor Electrical Requirements

208 230 460 575

FLA LRA FLA LRA FLA LRA FLA LRA

2.0 HP 7.5 46.9 6.8 40.8 3.4 20.4 2.7 16.2

3.0 HP 10.6 66.0 9.6 58.0 4.8 26.8 3.9 23.4

5.0 HP 16.7 105.0 15.2 91.0 7.6 45.6 6.1 36.6

7.5 HP 24.2 152.0 22.0 132.0 11.0 66.0 9.0 54.0

10.0 HP 30.8 193.0 28.0 168.0 14.0 84.0 11.0 66.0

15.0 HP 46.2 290.0 42.0 252.0 21.0 126.0 17.0 102.0

20.0 HP 59.4 321.0 54.0 290.0 72.0 145.0 22.0 116.0

1) Refer to General Data Section for standard fan motor size on units.

– 18 –

Guide Specifications

1.0 GENERAL

1.1 SummaryThese specifications describerequirements for a precisionenvironmental control system.The system shall be designedto maintain temperature andhumidity conditions in therooms containing electronicequipment.

The manufacturer shall designand furnish all equipment tobe fully compatible with heatdissipation requirementsof the room.

1.2 DesignRequirements

The precision environmentalcontrol system shall be aLiebert self-contained factoryassembled unit with (upflow)(down-flow) air delivery. Thesystem shall have a totalcooling capacity of ____ BTU/HR, (kW) with a sensiblecooling capacity of ____ BTU/HR (kW) based on an enteringair temperature of ____ °F (°C)dry bulb and ____ °F (°C) wetbulb. The unit is to be suppliedwith ____ volt ____ ph____ Hz electrical service.

1.3 SubmittalsSubmittals shall be providedwith the proposal and shallinclude: Single-Line Diagrams;Dimensional, Electrical, andCapacity Data; Piping andElectrical ConnectionDrawings.

2.0 PRODUCT

2.1 Cabinetand FrameConstruction

The frame shall be constructedof heliarc welded tubular steel.It shall be painted using theautophoretic coating processfor maximum corrosionpro-tection. The exterior panelsshall be insulated with aminimum 1 in. (25.4mm),1.5 lbs. (.68 kg) density fiberinsulation. The main frontpanel shall have captive 1/4turn fasteners. The main unitcolor shall be ____. Theaccent color shall be ____.The exterior panels shall bepowder coated.

2.2 Filter ChamberThe filter chambers shallbe an integral part of thesystem, located within thecabinet serviceable from eitherend of the unit. The filters shallbe rated not less than ____%efficiency (based on ASHRAE52.1).

For models FH/UH600C,FH/UH599C and FH/UH740C,FH/UH739C the filters shall beserviceable from the front ofthe unit.

2.3 Fan SectionThe fan shall be the centrifugaltype, double width doubleinlet, and shall be statically anddynamically balanced asa completed assembly to amaximum vibration level of twomils in any plane. The shaftshall be heavy duty steel withself-aligning ball bearings witha minimum life span of100,000 hours. The fan motorshall be ____ hp at 1750 RPMat 60 Hz (1450 RPM at 50 Hz)and mounted on an adjustableslide base. The drive packageshall be two-belt, variablespeed, sized for 200% ofthe fan motor horsepower.The fans shall be locatedto draw air over the A-framecoil to ensure even air dis-tribution and maximum coilperformance.

2.4 InfraredHumidifier

The humidifier shall be ofthe infrared type consistingof high intensity quartz lampsmounted above and out of thewater supply. The evaporatorpan shall be stainless steel andarranged to be serviceablewithout disconnecting highvoltage electrical connections.The complete humidifiersection shall be pre-pipedready for final connection. Theinfrared humidification systemshall use bypass air to preventoverhumidification of thecomputer room. The humidifiershall have a capacity of ____

lbs./hr. (kg/h). The humidifiershall be equipped with anautomatic water supplysystem.The system has an adjustablewater-over-feed to preventmineral precipitation.

2.4 (Optional)Steam GeneratingHumidifier

The environmental controlsystem shall be equipped witha steam generating humidifierthat is controlled by themicroprocessor controlsystem. It shall be completewith disposable canister, allsupply and drain valves, steamdistributor, and electroniccontrols. The need to changecanister shall be annunciatedon the microprocessor controlpanel. The humidifier shall bedesigned to operate with waterconductivity from 200-500micromhos.

2.4 (Optional)Steam GridHumidifier

The steam humidifier shallbe the “Armstrong” steamseparator type with an internaldrying chamber and steamjacketed stainless steeldistribution manifold. Com-plete system shall includea pre-piped solenoid controlvalve, steam trap, andcleanable Y-strainer. Allmechanical control com-ponents shall be locatedin a separate compartment,isolated from the air steam.The humidifier shall have acapacity of ____ lbs./hr. (kg/h)at ____ PSIG (kPa) steamsupply pressure.

2.5 Electric ReheatThe electric reheat coils shallbe low watt density, 304/304stainless steel fin tubularconstruction, protected bythermal safety switches, shallbe ____ BTU/HR, ____ kW,controlled in three stages.

2.5 (Optional)Steam Reheat

The steam reheat coil shallhave copper tubes andaluminum fins with a capacityof ____ BTU/HR (kW) with ____PSIG (kPa) steam. The systemshall be factory pre-piped witha 2-way modulating controlvalve, Y-strainer, and F & Tsteam trap.

2.5 (Optional)Hot Water Reheat

The hot water reheat coilshall have copper tubes andaluminum fins with a capacityof ____ BTU/HR (kW) whensupplied with ____ °F (°C)entering water temperatureat ____ GPM (l/s) flow rate.Maximum pressure dropshall be ____ PSI (kPa).The control system shall befactory pre-piped with a2-way modulating controlvalve and cleanable Y-strainer.

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2.6 OptionalAdvancedControlProcessor

The Advanced controlprocessor shall be micro-processor based with a frontmonitor LCD display paneland control keys for userinputs. The controls shallbe menu driven with on-screen prompts for easy useroperation. The system shallallow user review and pro-gramming of temperatureand humidity setpoints,alarm parameters, and setupselections including choice ofcontrol type. A password shallbe required to make systemchanges. For all user selec-tions, the range of acceptableinput (temperature, humidity,or time delay) shall bedisplayed on the monitorscreen. The system shallprovide monitoring of roomconditions, operationalstatus in % of each function,component run times, dateand time, and four analoginputs from sensors providedby others.

Control

The control system shall allowprogramming of the followingroom conditions:• Temperature Setpoint

65-85°F (18-29°C)• Temperature Sensitivity

±1° to 9.9°F (0.6 to 5.6°C)in 0.1°F (.1°C) increments

• Humidity Setpoint20-80% R.H.

• Humidity Sensitivity+1% to +30% R.H.

All setpoints shall be adjust-able from the individual unitfront monitor panel. Temper-ature and Humidity Sensorsshall be capable of beingcalibrated using the frontmonitor panel controls tocoordinate with other temper-ature and humidity sensors inthe room.

Predictive Humidity Control

The microprocessor shallcalculate the moisture contentin the room and prevent

unnecessary humidificationand dehumidification cyclesby responding to changesin dewpoint temperature.

In addition the system shallprovide the following internalcontrols:

System Auto-Restart

For start-up after powerfailure, the system shallprovide automatic restartwith a programmable (upto 9.9 minutes in 6-secondincrements) time delay.Programming can be per-formed either at the unitor from the central sitemonitoring system.

Sequential Load Activation

During start-up, or after powerfailure, the microprocessorshall sequence operationalload activation to minimizeinrush current. Systemsallowing multiple loads tostart simultaneously areunacceptable.

Front Monitor Display Panel

The microprocessor shallprovide a front monitor LCDbacklit display panel with 4rows of 20 characters withadjustable contrast. Thisdisplay (along with five frontmounted control keys) shallbe the only operator interfacerequired to obtain all availablesystem information such asroom conditions, operationalstatus, alarms, control andalarm setpoints, and all userselections including alarmdelays, sensor calibration,DIP switch selections, anddiagnostics. All indicatorsshall be in language form.No symbols or codes shallbe acceptable.

Alarms

The microprocessor shallactivate an audible and visualalarm in event of any of thefollowing conditions:• High Temperature• Low Temperature• High Humidity

• Low Humidity• Main Fan Overload (opt)• Humidifier Problem• Change Filters• Loss of Air Flow• Loss of Power• Custom Alarm (#1 to #4)

Custom alarms are fourcustomer accessible alarminputs to be indicated on thefront panel. Custom alarmscan be identified with prepared(programmed) labels for thefollowing frequently usedinputs:• Leak Under Floor• Smoke Detected• Loss of Water Flow• Standby Unit On

User customized text can beentered for two of the fourcustom alarms.

Each alarm (unit and custom)can be separately enabled ordisabled, selected to activatethe common alarm, andprogrammed for a timedelay of 0 to 255 seconds.

Audible Alarm

The audible alarm shallannunciate any alarm that isenabled by the operator.

Common Alarm

A programmable commonalarm shall be provided tointerface user selected alarmswith a remote alarm device.

Remote Monitoring

All alarms shall be communi-cated to the Liebert sitemonitoring system with thefollowing information: date andtime of occurrence, unitnumber, and present tempera-ture and humidity.

Control Type

The user shall be able toselect the type of control theadvanced microprocessor willuse. Selections available shallbe intelligent, proportional,and tunable PID (proportional,integral, and derivative gains).

The intelligent control shallincorporate control logic thatuses Artificial Intelligencetechniques including “fuzzylogic” and “expert systems”methods to maintain precise,stable control. If tunable PID isselected, the user shall be ableto program each of the threegains.

Analog Inputs

The system shall include fourcustomer accessible analoginputs for sensors providedby others. The analog inputsshall accept a 4 to 20 mAsignal. The user shall be ableto change the input to 0 to 5vdc or 0 to 10 vdc if desired.The gains for each analoginput shall be programmablefrom the front panel. Theanalog inputs shall be ableto be monitored from thefront panel.

Diagnostics

The control system andelectronic circuitry shall beprovided with self-diagnosticsto aid in troubleshooting. Themicrocontroller board shall bediagnosed and reported aspass/not pass. Control inputsshall be indicated as on oroff at the front monitor panel.Control outputs shall be ableto be turned on or off from thefront monitor panel withoutusing jumpers or a serviceterminal.

Data Collection

The control system shallmaintain accumulativeoperating hours of com-pressors, reheats, humdifier,fan motor and econ-o-coil.The ten most recent alarmsshall be retained.

Communications

The microprocessor shall becompatible with all Liebertremote monitoring and controldevices.

– 20 –


2.6 AdvancedMicroprocessorControlw/Graphics(Optional)

The optional Advancedcontrol processor shall bemicroprocessor based witha front monitor dot matrixdisplay panel and controlkeys for user inputs. TheControls shall be menu drivenwith on-screen prompts foreasy user operation. Thesystem shall allow userreview and programming oftemperature and humiditysetpoints, alarm parameters,and setup selections includingchoice of control type. Apassword shall be required tomake system changes. For alluser selections, the range ofacceptable input (temperature,humidity, or time delay) shallbe displayed on the monitorscreen. The system shallprovide monitoring of roomconditions, operationalstatus in % of each function,component run times, dateand time, and four analoginputs from sensors providedby others.

Control

The control system shall allowprogramming of the followingroom conditions:• Temperature Setpoint

65-85°F (18-29°C)• Temperature Sensitivity

+1° to + 9.9°F (°C) in0.1°F (°C) increments

• Humidity Setpoint20-80% R.H.

• Humidity Sensitivity+1% to +30% R.H.

All setpoints shall be adjust-able from the individual unitfront monitor panel. Temper-ature and Humidity Sensorsshall be capable of beingcalibrated using the frontmonitor panel controls tocoordinate with other temper-ature and humidity sensorsin the room.

Predictive Humidity Control

The microprocessor shallcalculate the moisture contentin the room and preventunnecessary humidificationand dehumidification cyclesby responding to changesin dewpoint temperature.In addition the system shallprovide the following internalcontrols:

System Auto-Restart

For start-up after powerfailure, the system shallprovide automatic restart witha programmable (up to 9.9minutes in 6-second incre-ments) time delay. Program-ming can be performed eitherat the unit or from the centralsite monitoring system.

Sequential Load Activation

During start-up, or after powerfailure, the microprocessorshall sequence operationalload activation to minimizeinrush current. Systemsallowing multiple loads tostart simultaneously areunacceptable.

Front Monitor Display Panel

The microprocessor shallprovide a front monitor 240x 128 dot matrix graphicsdisplay panel with backlight-ing. This display (along withfive front mounted controlkeys) shall be the onlyoperator interface requiredto obtain all available systeminformation such as roomconditions, operational status,graphical data, alarms, controland alarm set-points, and alluser selections including alarmdelays, sensor calibration, DIPswitch selections, anddiagnostics. All indicators shallbe in language form. Nosymbols or codes shall beacceptable.

Alarms

The microprocessor shallactivate an audible and visualalarm in event of any of thefollowing conditions:• High Temperature• Low Temperature• High Humidity• Low Humidity• Main Fan Overload (Opt)• Humidifier Problem• Change Filters• Loss of Air Flow• Loss of Power• Custom Alarm

(#1 to #4)

2.7 Chilled WaterSystems

2.7.1 Chilled WaterControl Valve

The water circuit shall includea 3-way (2-way) modulatingvalve. The microprocessorpositions the valve in responseto room conditions. Coolingcapacity will be controlled bybypassing chilled wateraround the coil. The modulat-ing valve travel for dehumidifi-cation shall be proportional.

2.7.1 (Optional) HighPressure ChilledWater ControlValve

The chilled water circuit shallinclude a 3-way (2-way) highpressure modulating valve.The valve shall be designed forup to 400 PSI (2758 kPa) waterpressure.

2.7.2 A-Frame ChilledWater Coil

The cooling coil shall beof A-frame design with aminimum of ____ sq. ft.(sq.m.) face area, ____ rowsdeep.The coil shall be controlled bya 3-way modulating controlvalve. It shall be constructedof copper tubes and alumi-num fins and have a maxi-mum face velocity of ____ ft.per minute (m/s) at ____ CFM(CMH).The water circuit shall bedesigned to distribute waterinto the entire coil face area.The coil shall be supplied with____ °F (°C) entering watertemperature, with a ____ °F(°C) temperature rise. The coilshall require ____ GPM (l/s) ofchilled water and the pressuredrop shall not exceed ____PSI (kPa). The entire coilassembly shall be mounted ina stainless steel condensatedrain pan.

For models FH600C, FH599Cand FH740C and FH739C theend sheets shall be alumi-num, and the coil can beremoved from the front oreither side ofthe unit.

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2.7.3 (Optional)Flow Switch

The flow switch shall activatethe alarm system shouldthe chilled water supply beinterrupted. The switch shallbe factory mounted and wired.

2.7.4 (Optional)VariableSpeed Drive

A variable speed drive (VSD)is available for modelsFH/UH600C, FH/UH599C,FH/UH740C, and FH/UH739Cto reduce energy consump-tion. The fan motor speed shallbe varied from 100% to 60%of rated speed in response toroom conditions. This shall becontrolled automatically by theadvanced microprocessorcontrol. The variable speeddrive option shall be availablewith an infrared humidifier.

2.8 OptionalSpecifications

The computer room environ-mental control system shall beequipped with the followingoptional components.

Disconnect Switch(Non-Locking Type)

The manual disconnect switchshall be mounted in the highvoltage section of the electricalpanel. The switch shall beaccessible with the doorclosed.Disconnect Switch(Locking Type)

The manual disconnect switchshall be mounted in the highvoltage section of the electricalpanel. The switch shall beaccessible from the outside ofthe unit with the door closed,and prevent access to the highvoltage electrical componentsuntil switched to the “OFF”position.

Firestat

The firestat shall immediatelyshut down the environmentalcontrol system when acti-vated. The firestat shall bemounted in the electrical

panel with the sensingelement in the return air.

Condensate Pump

The condensate pump shallhave a minimum capacity of100 GPH at 20 ft. (378 l/hr at6m) head. (Consult factory for200V or 230V, 50 Hz applica-tions.) It shall be complete withintegral float switch, pump andmotor assembly, and reservoir.

Liqui-Tect Sensors(Max. of two per unit)

Provide ____ (quantity) solidstate water sensors under theraised floor.

Floor Stand

The floor stand shall beconstructed of a heliarcwelded tubular steel frame.The floor stand shall haveadjustable legs with vibrationisolation pads. The floor standshall be ____ inches high.

Floor Stand Turning Vane

A factory supplied, fieldmounted turning vane shallbe provided.

Temperature andHumidity Recorder

Provide a 7-day/24 hourtemperature and humidityrecorder of the full scope,two pen, surface mountedtype with 100 recording charts,one red and one blue bottle ofrecording ink. Recorder shallbe a 110 volt, single phase,60 Hz (50 Hz) power supply.

Smoke Detector

The smoke detector shallimmediately shut down theenvironmental control systemand activate the alarm systemwhen activated. The smokedetector shall be mounted inthe electrical panel with thesensing element in the returnair compartment.

SiteScan SiteMonitoring System

Provide a SiteScan monitorsystem with the DeluxeSystem/3. The SiteScanshall have the capability tomonitor and change (at theuser direction) the temperatureand humidity setpoints andsensitivities of each unit. Theprinter shall provide the userwith chronological alarminformation. It shall also becapable of being programmedto print out environmentalconditions or operatingmodes at each unit.

3.0 EXECUTION

3.1 Installation ofPrecisionEnvironmentalAir ConditioningUnits

3.1.1 GeneralInstall precision environmentalair conditioning units inaccordance withmanufacturer’s installationinstructions. Install units plumband level, firmly anchored inlocations indicated, andmaintain manufacturer’srecommended clearances.

3.1.2 Electrical WiringInstall and connect electricaldevices furnished by manufac-turer but not specified to befactory mounted. Furnish copyof manufacturer’s electricalconnection diagram submittalto electrical contractor.

3.1.3 PipingConnections

Install and connect devicesfurnished by manufacturerbut not specified to be factorymounted. Furnish copy ofmanufacturer’s piping con-nection diagram submittalto piping contractor.

3.2 Field QualityControl

Start up mainframe coolantunits in accordance withmanufacturer’s start upinstructions. Test controlsand demonstrate compliancewith requirements.

Installation/Application Guidelines

Selecting the CriticalSpace LocationSelection of the Critical Spacesite requires evaluation andconsideration of many factors.These include the proximity ofthe Critical Space to relatedoperations, security, interior vs.exterior zones of the buildingand proximity of the packagedenvironmental control systemto the chiller system. Ingeneral, the location of theCritical Space should be in anarea of the building which isnot affected by outsidetemperatures or relativehumidities. If a site is chosenwith an outside wall, the areaof window glass should bekept to a minimum and doubleor triple-glazed glass shouldbe used to pre-vent condensa-tion in winter.

Room PreparationWhen designing the CriticalSpace, consideration shouldbe given to accessibility anddimensional requirements forthe environmental controlequipment as well as theelectronic equipment. Thisincludes checking the sizeof door openings, elevatorcapacities and, in the caseof a raised floor application,selecting a flooring systemcapable of supporting allthe hardware. Considerationshould also be given to thetype of electrical power distri-bution and control system tobe used in the Critical Space.

Sufficient area for anyplanned growth of the CriticalSpace and redundancy inenvironmental control unitsshould be considered duringinitial planning.

The room should be wellinsulated and must have asealed vapor barrier. Theceiling or ceiling plenum mustbe sealed as a false ceilingprovides no protection fromvapor migration. Use a rubberor plastic base paint on con-crete walls or floors to preventmoisture migration. Doorsshould not be undercut orhave grilles in them. Lightfixtures which require room airto cool them and allow roomair to enter the area above thefalse ceiling should not beused when the false ceilingarea is not a part of the siteair distribution plan.

Outside air should bekept to an absolute minimum.Fresh air adds to the heating,cooling, humidifying anddehumidifying loads of the site.It is recommended that outsideair be kept below 5% of thetotal air circulated in the spacebecause of the small quantityof people who will be workingin the site.

Installationof a DownflowEnvironmentalControl SystemThe indoor packaged systemcan be installed on an acces-sible raised floor system. Itmay be necessary to furnishadditional pedestal supportunder the unit to ensure max-imum structural support. Or aseparate floorstand for the unitmay be used as support,independent of the raised floor,and installed prior tothe flooring system (seeOptional Features). The useof the floorstand permits theenvironmental control systemto be installed, piped, wiredand inspected prior to theinstallation of the raised floor.This permits much easieraccess to all underfloor pipingand wiring and would enablethe construction to be com-pleted in the least amount oftime. The floorstand furtherprovides vibration isolationfrom the adjacent raised floorand eliminates the need forcutting special openings in thefloor panels under the unit. Allfield piping and electrical enterthe unit from the bottom of theunit at the left end.

Provide approximately 34"(86 cm) service clearance onthe left, right and in front of theunit whenever possible. Theminimum space required forinstallation is 0" on the left end,0" on the right end and 24"(61 cm) in front of the unit. Thisspace is necessary to providefor routine maintenance suchas replacing filters, adjustingthe fan speed and cleaning thehumidifier. If filter plenums areused, 25" (63.5 cm) of serviceclearance is required on theright end.

Air Distribution ofDownflow SystemsFor underfloor air distribution,observe the following guide-lines:1. Avoid locating units in an

alcove or at the extremeend of a room which hasa high aspect ration (longnarrow room).

2. Avoid locating units tooclose to each other. Unitslocated relatively close toeach other tend to reducethe effectiveness of airdistribution.

3. Select the air supply grillesand perforated panels forthe raised floor to ensureminimum loss of pressure inthe circuit. Air volumedampers on grilles, whichextend several inchesbelow the surface of theraised floor, are usuallydetrimental to air flow.Consideration of the heightof the damper on the grillein conjunction with thefloor height will determinewhether this type of grillemay be used.

4. The grilles used in raisedfloors vary in size, thelargest being approximately18" x 6" (45.7 x 15.2 cm). Alarger grille size would bedetrimental to the structuralcapacity of the raised floorpanel. An 18" x 6" (45.7 x15.2 cm) heavy-duty pencilproof type grille typicallyhas 56 square inches (361cm2) of free area.

5. Perforated panels areavailable from various

manufacturers of raisedfloors. These panels areusually 2' x 2' (.61m x.61m) square and have anominal free area ofapproximately 108 to 144square inches (697 to 929cm2). Use caution inselecting perforatedpanels as some manufac-turers have only 36 to 40square inches (232 to 258cm2) of free area, requiringfour times as manypanels.

6. Always check specifica-tions of the floor supplierbefore specifying the totalnumber of perforatedpanels and grilles requiredto handle the air flow. Theproper specifications forgrilles and perforatedpanels should indicate thetotal free area requiredfor air delivery rather thanthe number of panels andgrilles. (See Table forrecommended free arearequired for each Liebertmodel.) The table belowindicates the recom-mended free area basedon having the supply airgrilles and perforatedpanels sized to handleapproximately 75% of thetotal CFM (CMH) of theunits at a velocity of 550to 600 ft/mm. (2.8 to 3.1m/s). The remaining 25%of the air flow in thecomputer room raisedfloor passes through cablecutouts, cracks betweenthe panels, and otherleakage areas.

RECOMMENDED FREE AREA FT2 (m2) FOR GRILLES ORPERFORATED PANELS AT OUTPUT VELOCITIES OF 550

AND 600 F.P.M. (2.8 AND 3.1 m/s)

CHILLED WATER UNITS

MODEL FH 550 2.8 600 3.1(50 Hz) F.P.M. m/s F.P.M. m/s

147C 7.2 (0.65) 6.6 (0.60)

200C 8.2 (0.74) 7.6 (0.70)

248C 8.0 (0.73) 7.4 (0.67)

302C 12.7 (1.15) 11.6 (1.05)

376C 12.4 (1.13) 11.4 (1.03)

386C 12.4 (1.1) 11.4 (1.0)

422C 17.0 (1.54) 15.6 (1.42)

529C 16.9 (1.53) 15.5 (1.41)

600C 23.3 (2.16) 21.4 (1.95)(599C)

740C 22.5 (2.09) 20.6 (1.89)(739C)

– 22 –

7. The decision to use agrille or a perforated paneldepends on several fac-tors. Perforated panelsare generally used in thecomputer room near thehardware. Grilles withadjustable dampers shouldbe used in areas where“people corn-font” is aprime consideration, suchas: keypunch areas, areasaround the line printer, orother operator areas. Thiswill allow the personnel toadjust the flow rates fortheir comfort rather than theequipment loads. Cautionshould be used whenapplying dampered grillesor dampered perforatedpanels around high heatgain areas to ensure thatthe dampers are notclosed-off by shuffling ofcables, occasional operatordiscomfort, or careless-ness.

8. Avoid low floor elevations(below 7-1/2" / 90.5 mm),loosely installed flooringsystems, and below floorobstructions, such as:electrical wiring chases,unusual length of computersystem cables, or pipingclusters.

Installation of anUpflow EnvironmentalControl SystemThe indoor packaged systemcan be installed on an acces-sible raised floor system asdescribed for a downflowsystem or on a solid non-raised floor. It can be installedinside the Critical Space oroutside the Critical Space. Atypical installation within thespace can be accomplishedwithout using any ductwork.The packaged system shouldhave a front-return cabinet (orbottom return if on a raisedfloor) with an optional frontdischarge plenum which sitson top of the unit. If supply airmust be ducted to severallocations within the space,duct flanges are provided onthe blower discharges toattach the ductwork. Adecorative plenum is availablein different heights to concealthe ductwork between the unitand ceiling. The packaged

system can be installedoutside the space and ductedin and out of the space. In thiscase, the unit should have arear return with duct connec-tions for the return air. Supplyair ductwork should beattached to the blowerdischarges as describedabove. All field piping andelectrical enter the unit on thelower left corner of the unit’sleft end.

Provide approximately(34" 86cm) service clearanceon the left, right and in front ofthe unit whenever possible.The minimum space requiredfor installation is 18" (46cm) onthe left end, 18" (46cm) on theright end and 24" (61cm) infront of the unit. This space isnecessary to provide forroutine maintenance such asreplacing filters, adjusting thefan speed and cleaning thehumidifier.

ElectricalRequirements forthe EnvironmentalControl SystemThree-phase electrical serviceis required for all models in208, 230, 460, or 575 volt60 hertz (200, 230, 380-415volt 50 hertz).

Electrical service to theunit should conform with bothnational and local electricalcodes. Select the proper wiresize for minimum allowablevoltage drops to assuredependable operation duringperiods of peak power usagewhen “brownouts” may occur.See Wire Size Amp values inthe Electrical Specificationssection.

A manual electrical dis-connect switch should beinstalled within 5 ft. (1.5 m) ofthe unit in accordance withcodes or a disconnect switchmay be factory supplied,mounted within the unit,accessible from the exteriorwith a locking or non-lockingtype of operating handle.(see Optional Equipment/AllSystems). For emergencyshut-down of each environ-mental control system throughfire detection systems, panicbuttons, etc., utilize the lowvoltage terminal strip locatedwithin each unit.

Piping ConsiderationsIt is recommended thatmanual service shut-off valvesbe installed at the supply andreturn line of each unit.

Consideration of theminimum water temperatureto be supplied from the chillerwill determine that the needexists to insulate supply andreturn lines. Insulation willprevent condensation on thechilled water lines.

To provide for the emer-gency of water leaks andsub-floor flooding, floor drainsshould be provided with “wettraps” or a free-water detec-tion system such as theLiebert Liqui-Tect alarmshould be installed.

For raised floors, all pipingbelow the elevated floor mustbe located so that it offers theleast resistance to air flow

discharging from thesystem. Careful planning ofthe piping layout under theraised floor is required toprevent the air flow frombeing blocked from anyportion of the room. Wheninstalling piping on the sub-floor, it is recommendedthat pipes be mounted in ahorizontal fashion, ratherthan stacked one above theother on support brackets.Whenever possible, thepipes should be run parallelto the air flow. All conden-sate and unit drain linesshould be trapped andpitched.

- 23 -

Downflow System Shown

Deluxe System/3®

Chilled Water Systems

ENVIRONMENTAL CONTROL

TECHNICAL DATA MANUAL

K e e p i n g B u s i n e s s i n B u s i n e s sLiebert ®

®

The Company Behind the Products

With over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its founding in 1965, Liebert hasdeveloped a complete range of support

protection systems for sensitive electronics:

• Environmental systems: close-control airconditioning from 1.5 to 60 tons.

• Power conditioning and UPS with powerranges from 300 VA to more than 1000 kVA.

• Integrated systems that provide bothenvironmental and power protection in asingle, flexible package.

• Monitoring and control – for systems of anysize or location, on-site or remote.

• Service and support through more than 100service centers around the world, and a 24/7Customer Response Center.

While every precaution has been taken to ensureaccuracy and completeness of this literature,Liebert Corporation assumes no responsibility anddisclaims all liability for damages resulting fromuse of this information or for any errors oromissions. © 1992 Liebert Corporation.All rights reserved throughout the world.Specifications subject to change without notice.

® Liebert and the Liebert logo are registeredtrademarks of Liebert Corporation. All namesreferred to are trademarks or registered trademarksof their respective owners.

SL-18110 (R10/01)

Technical Support

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1-800-222-5877Outside the United States

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