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Trane Horizon Absorption Series Single-Stage Hot Water or Steam-Fired Absorption Water Chillers 500-1350 Tons Built for Industrial and Commercial Applications ABS-PRC001-EN March 2006

Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

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Page 1: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

Trane Horizon™

Absorption Series

Single-Stage Hot Water or

Steam-Fired Absorption Water Chillers

500-1350 Tons

Built for Industrial and Commercial Applications

ABS-PRC001-ENMarch 2006

Page 2: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

ABS-PRC001-EN© 2006 American Standard All rights reserved

Introduction

Hybrid Chiller Plant

A chiller plant design that allows theoperator to choose between multipleenergy sources is referred to as a hybriddesign. Hybrid chiller plants arereceiving increasing attention asvaluable options for facility owners.There are various types of hybrid plantdesigns. They encompass differentcombinations of electric chillers andother chiller types, including gas orsteam absorption chillers. Theadvantages of having a choice of energysources will become even more viableas we move further into the newmillennium.

Today we hear about utility deregulation.For the first time, building owners cannegotiate power supply and natural gascontracts with their traditional supplier,as well as with new suppliers in themarket. The fuel-switching flexibility ofthe hybrid plant puts the owner in amuch stronger negotiating position.Similarly, many electric utilities offerattractive off-peak or dual fuel electricrates for applications which are notoperating during peak electric systemdemand, most commonly in thesummer months. This represents anopportunity for building owners who canswitch to a gas or steam system.

Page 3: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

3ABS-PRC001-EN

Contents

Introduction

Features and BenefitsComponent Identification, Typical Single-StageSteam Illustration, Refrigerant Cycle Overview

Application ConsiderationsOperating Limits, Sound, Water Flow/Treatment,Combination Systems, Multiple Machines

Selection ProcedureComputer Selection Procedure, Tube Fouling,Product Coding Description

Performance DataCapacity/COP/Steam Rate/Flow Rate, Pressure DropTables, Capacity vs. Chilled Water Supply Temperature,Energy Input vs. Capacity, Pressure Drop vs. Flow Rate

Electrical Data

Controls Data

Dimensions and WeightsPhysical Dimensions, Weights, Connection Sizes,Refrigerant Charging, Separated Machine Sections,Foundation Support, Rigging/Service Clearances,Chiller Isolation, Insulation Lengths

Jobsite ConnectionsTypical Piping

Mechanical Specifications

Standard/Optional/Design Special Features

Standard Conversion Table

2

4

8

9

12

17

20

24

34

40

42

43

Trane Horizon™ AbsorptionSeries

Trane has led in absorption chiller designand manufacturing for four consecutivedecades. In fact, Trane is the only NorthAmerican chiller manufacturer tocommercialize double-effect absorption,over 25 years ago. With over 10,000absorption chillers manufactured andshipped, Trane serves the commercial,industrial and process worldwidemarkets. Microelectronic controls,adaptive frequency drives and smartpurge systems have modernized thetechnology, making it more capable,more reliable and, in many applications,more economical.

Performance• Produces colder chilled water to 40°F

[4.4°C].• Starts with low 55°F [12.8°C] tower-

water temperatures.• Operates reliably with low 65°F [18.3°C]

tower-water temperatures.

Easier Installation• Rigging eyes built-in as standard.• Shell disassembly option.• Crossover pipe and steam valve

available as an option.

Reliability• Adaptive microprocessor controls.• 50,000 hours life-extended pumps.• Constructed of corrosion-resistant alloy

materials.

Design Diversity• Marine water boxes on cooling-water

connections available as an option.• Custom design options available.

Page 4: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

ABS-PRC001-EN4

Features andBenefits General

Trane Horizon™ AbsorptionSeries, Single-Stage HotWater- or Steam-FiredAbsorption Water Chillers,500-1350 Tons

Technology You Can TrustIn the early 1990’s, with the assistance ofthe Gas Research Institute, Trane begandeveloping an innovative series ofabsorption chillers. In 1995, Horizonchillers began shipping from the Tranemanufacturing facility in La Crosse,Wisconsin. The Horizon chiller is soadvanced, it redefined industrystandards for absorption systemintegrity. Horizon chiller performance,efficiency and reliability far exceed thatof past and present absorption chillers.

Dynamic By DesignBecause uninterrupted chiller service iscritical to your operation, Horizon chillersare designed to make chilled waterreliably, even in the harshest industrialapplication. Water-tower systems andload requirements can challenge thelong-term operation of many standard-grade chillers. The industrial-gradeconstruction of the Horizon chilleraccounts for varying load and water-temperature changes, as well as dirtytower water. They are built withcorrosive-resistant alloy metals, andprecision welded in an ISO 9001 quality-certified facility. Only extended-lifepumps, valves and water boxes aremanufactured into their design. Forfurther dynamics, Horizon UCP2adaptive microprocessor controls reactprecisely to system diversification.Quality construction, long-lifecomponents and adaptive controls arewhat make the Horizon dynamic bydesign.

Operates With Energy-Saving,Low-Pressure Steam or Hot WaterThe Horizon family includes a single-stage, hot water- or steam-fired chillerline. Able to produce chilled water in therange of 40 to 60°F [4.4 to 15.6°C], thesemachines use 12 psig [0.83 bar] low-grade steam or 270°F [132°C] hot water.

Making chilled water from thesecomparatively low-temperature inputs isparticularly important for energyconserving applications, such as waste-heat recovery, co-generation equipmentand solar-energy-powered cooling.

Using refrigerant water helps eliminaterefrigerant management or availabilityconcerns. Additionally, absorptiontechnology reduces the use of electricenergy.

Page 5: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

5ABS-PRC001-EN

Features andBenefits General

Sophisticated ReliabilityHorizon controls meet specifications forstand alone or hybrid chiller control.UCP2 adaptive controls are critical toreliable operation. Trane controls arecompatible with Integrated Comfort™

Systems (ICS), and are easily integratedinto the Tracer® family of flexible chiller-plant system controllers with a singletwisted-pair communications cable.

Ideal for Process and CommercialApplicationsWith Horizon chillers, the applicationpossibilities for the absorption machineare expanded. Capabilities such as lowertower flow, variable evaporator flow,lower chilled-water temperatures andadvanced control capabilities make thesingle-stage Horizon absorption chillerideal for both process and comfortapplications.

When Long-lived ReliabilityIs ImportantTrane has been a long-time proponent ofthe use of high-quality materials inabsorption chiller designs. The lithiumbromide temperatures and waterrefrigerant, typical of all absorbers, canmore quickly corrode lower-grade metalsin the presence of air. Trane recommendsand uses industrial-grade materials toprovide long-lived, reliable cooling.

A Global Network ofAbsorption ExpertiseWhen you specify a Trane Horizonchiller, you’re getting the knowledge,expertise and assistance of a pool ofexperts that have decades of absorptionexpertise. Making The Trane Companypart of your management team givesyou access to refrigeration, airconditioning and facility control-systemapplications specialists, and a uniquebreadth of innovative solutions to satisfyyour facilities needs for today andtomorrow.

Standard Specification ForSingle-Stage Horizon Chillers• C.O.P. 0.70• Victaulic™ water connections• Fully-automatic purge system• Industrial-grade tubes

— Generator .028" wall, 90/10Cupro-nickel

— Evaporator .025" wall copper(enhanced)

— Absorber 500-800 tonnages .022"wall 95/5 Cupro-nickel 975-1350tonnages .028" wall copper

— Condenser .028" wall copper• Advanced cycle-management systemwith Adaptive Frequency™ drivesolution control

• 150 psig [10.3 bar] evaporator, absorberand condenser sections

• Industrial-grade energy valve• Rigging eyes for easy installation• Advanced microprocessor controlsystem with adaptive control functions

• 2-line, 40-character clear-languageinterface to unit functions anddiagnostic information

• Fixed and floating generator tubesupports prevent thermal stress

• Efficient stainless steel brazed platesolution heat exchanger

• Long-life solution pumps• Molybdate inhibitor system• Factory-installed and-commissionedcontrols

• Individually replaceable tubes• Removable absorber and evaporatorspray trees

Optional Specification ForSingle-Stage Horizon Chillers• Removable absorber and evaporatorspray trees150 psig [10.3 bar] raisedface flanges for the evaporator,condenser, and absorber waterconnections

• Disassembled unit — easesdisassembly and reassembly of majorcomponents at the job site

• Lithium bromide filter• Condenser and absorber marine stylewater boxes

• Factory installed cooling-watercrossover pipe absorber to condenser

• Factory mounted energy valve• Choice of tube materials and otherchiller options

• Stainless steel evaporator pan

Absorption Cooling —A Sound DecisionLife-cycle costing has become a primaryconcern for chiller buyers who havelong-term investment opportunity inmind. Changes in the distribution andpricing of electricity have made theabsorption water chiller a popular choicewhen alternative energy use makessense. Ask your local Tranerepresentative for a comprehensiveanalysis of your facility, and the energy-saving opportunities Trane offers for thedesign of Heating, Ventilating and AirConditioning systems and controls.

Page 6: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

ABS-PRC001-EN6

ComponentIdentification

Features andBenefits

Rigging Eyes ForEasier Installation

CondenserSection

SeparableShellDesign

UCP2™

MicroprocessorControl System

Fully-AutomaticPurge System

Solution PumpVariable-FrequencyDrive

RefrigerantStorage Tank

Long Life HermeticSolution Pumps

VacuumPump

Industrial-GradeEnergy Valve

ASME-RatedGenerator

Lifting Eyes onWater Box Covers

Absorber Section

EvaporatorSpray Tree

AbsorberSpray Tree

EvaporatorSection

Efficient Stainless-SteelSolution Heat Exchanger

Fixed and floating tube supportsIndustrial-grade tubes

Page 7: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

7ABS-PRC001-EN

Figure FB-1. Single-stage absorption refrigeration cycle

RefrigerationCycle

Features andBenefits

(1) Solution 215°F [102°C], Vapor 207°F [97°C](2) Refrigerant 100°F [38°C], Entering/

Leaving Cooling Water94°F/102°F [34°C/39°C]

(3) Entering/Leaving SystemWater 54°F/44°F [12°C/7°C],Evaporator PumpRefrigerant 41°F [5°C]

(4) Leaving Solution 107°F[42°C], Entering/LeavingCooling Water 85°F/94°F[29°C/34°C](5) Entering

Solution120°F [49°C]

(6)

Horizon™ Single-StageAbsorption Refrigeration Cycle

Refrigeration CycleThis is an example of typical machineoperation at a standard rating pointcondition (i.e., 85°F [29.4°C] tower, 44°F[6.7°C] leaving chilled water) at full load.Dilute solution has a relatively highrefrigerant content and low lithiumbromide content. An intermediatesolution is a mixture of dilute andconcentrated solutions. A concentratedsolution is one with a relatively lowrefrigerant content and high lithiumbromide content.

Generator (1)Dilute solution is pumped into thegenerator, where it is boiled by thesteam or hot water in the tube bundle,creating refrigerant vapor. Therefrigerant vapor flows to the condenser(2). The now-concentrated solutionflows by gravity, through the solutionheat exchanger to the absorber spraysystem, where it is mixed with dilutesolution from the absorber and sprayedon the absorber tube bundle.

Condenser (2)Refrigerant vapor, produced by thegenerator, enters the condenser andchanges to a liquid throughcondensation. The heat of condensationis rejected to the cooling water inside thetube bundle.

Evaporator (3)The liquid refrigerant leaves thecondenser through a J tube, where thepressure/temperature is reducedthrough expansion for delivery to theevaporator at 41°F [5°C]. System waterruns through the tube bundle where itsheat is transferred to the refrigerant,causing the refrigerant to vaporize/boil.The refrigerant vapor flows to theslightly lower pressure in the absorber.

Absorber (4)Refrigerant vapor is absorbed by thelithium bromide solution. The now-dilutesolution is pumped through the solutionheat exchanger and on to the generator.The heat of vapor absorption is rejectedvia the cooling water inside the tubebundle.

Absorption Process (5)Solution (concentrated) enters the spraysystem from the generator and entersthe spray system, wetting the tubes andproviding a liquid surface for therefrigerant vapor (from the evaporator)to absorb into the lithium bromidesolution. The solution temperature/concentration sprayed in the absorbercontrols the absorber pressure, therebycontrolling the evaporator refrigeranttemperature.

Solution Heat Exchanger (6)Solution flows through the heatexchanger to be preheated, reducing theheat energy required to induce boilingwithin the generator, and to decrease thetemperature of the solution beingreturned to the absorber, thusdecreasing the load on the coolingtower.

Page 8: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

ABS-PRC001-EN8

ApplicationConsiderations General

GeneralThe Horizon™ single-stage steam-fired orhot water absorption chiller is designedto provide 40°F to 60°F [4.4°C to 15.6°C]chilled water, for comfort or processcooling applications, within all threemarket segments – commercial,industrial and institutional. They aremost-often used where an economicanalysis of fuel costs versus electricalrates indicates an operating costadvantage.

In many process applications, they canbe utilized to convert excess heat energyto provide chilled water for process orcomfort applications.

Operating LimitsTrane single-stage absorption chillersoperate with nominal 12 psig [0.83 bar]steam or nominal 270°F [132°C] hotwater. In all applications, superheatshould be limited so steam temperaturedoes not exceed 340°F [171°C].

Waterflows that are within the limitsindicated on the appropriate selectiontable will ensure tube water velocitiesnot exceeding 10 feet per second[3.05 m/sec] in copper tubes and 11 feetper second [3.35 m/sec] in cupronickeltubes. Changes in condenser watertemperature should not exceed1°F per minute in the range from 75°F to95°F [23.9°C to 35°C].

Sound and VibrationAbsorption units are well-suited forareas where low sound levels arerequired. The Trane Horizon single-stagesteam absorption chiller will operateunder normal load conditions at lessthan 85 dBA sound pressure level.During operation there is no vibration ofany components that could bedamaging to the chiller or that couldtransmit objectionable sound orvibration to the building.

Chiller InstallationThe following should be consideredwhen installing an absorption chiller:• Rigging and service clearances• Foundation support• Chiller isolation for sound/vibration

reduction• Condensate handling• Steam supply control• Condenser-water temperature control• Chilled-water flow control• Chilled- and condenser-water flow limit• Generator hot-water application

Cooling-Tower Water FlowThe ARI standard gpm/ton for single-stage absorption chillers is 3.6, however,lower flow through the condenser andabsorber section will present anopportunity for a smaller tower, smallerpiping, and smaller condenser pump.For more information on lower flows inthe cooling tower water circuit, refer tothe appropriate Trane engineeringbulletin, available from your local Tranerepresentative.

Water TreatmentThe use of untreated or improperlytreated water may result in scaling,erosion, and corrosion, algae or slime. Itis recommended that the services of aqualified water-treatment specialist beused to determine what treatment, ifany, is advisable. The Trane Companyassumes no responsibility for the resultsof untreated or improperly treated water.

Combination SystemsPeak energy savings can be achievedwhen using a combination of electricchillers and absorption chillers for airconditioning loads. The absorptionchiller is used to shave seasonal, billablepeak-power demands during summeroperation, and the electric chiller is runbelow the allowed demand limit,reducing costly demand charges. Traneoffers both electric chillers andabsorption chillers with the unit controlpanel (UCP2) as standard. Although the

chillers have different features andmodes of operation, the chiller controlpanel looks and acts the same whenused with any chiller model. Eachcontrol panel is programmed to monitorthe particular chiller for which it wasdesigned, however, maintenance andservice personnel only need to becomefamiliar with one control panel.Combined with a Trane Tracer® system, achiller plant has almost unlimitedoperational flexibility, and all equipmentis supplied from a single source.

Multiple Machine InstallationsThe Trane absorption machine can beapplied to series or parallel chilled-waterflow, depending upon the designrequirement. The arrangement that isbest for an individual system should bebased on an analysis of system waterand temperature rise requirements,system and machine pressure-dropcharacteristics, and installation cost.

Parallel flow allows minimum chilled-water pressure drop through themachines. However, with one machine“off,” it is not usually possible tomaintain the design chilled-watertemperature unless one machine isisolated with shut off valves and thechilled-water flow decreased.

Series flow permits design chilled-watertemperature at light loads with onemachine “off.” However, at all operatingconditions, the chilled-water pressuredrop through the machine is high.

Accurate chilled-water temperatures canbe maintained on individual machinesbetween 100 percent and 10 percent ofnominal chiller load, which allows for awide range of control options. Eachchiller has a stand-alone control systemto manage the desired watertemperature, and also the ability toreceive remote commands to supportvarious system demands from a controlcenter. This versatility of control makesthe management of more than onemachine relatively easy.

Page 9: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

9ABS-PRC001-EN

SelectionProcedure

Selection ProcedureAbsorption refrigeration machines areusually selected to provide the requiredrefrigeration capacity with the smallestpractical machine of sufficient size.Machine size is based on chilled-waterflow rates and temperatures specified forthe air side of the system.

Total air-conditioning system first costcan be minimized by a careful analysis ofsystem operating parameters. The effectof flow rates and temperatures, on boththe building air side and the refrigerationmachine selections, should beinvestigated to determine which systemrepresents the best investment for theowner.

The information on the following pagesprovides performance data, at ARIstandard conditions, for capacity in tons,efficiency, flow rates and water pressuredrops. All capacities are in accordancewith the expected ARI 560 Standardrevision, and are based on foulingfactors of .0001 for the evaporatorwaterside tubing and .00025 for theabsorber and condenser tubing.

Standard FoulingUnit performance at non-standardfouling factors may vary from standardperformance. Fouling factors estimatethe heat transfer penalty that coincideswith the effect of typical fouling inevaporator and absorber/condenser(cooling) water circuits. All selectionsshould use the standard fouling factor tomore accurately estimate the chillerperformance in an equipment room andto comply with ARI 560.

ARI Standard Fouling FactorsEvaporator Condenser/Absorber

English Units – hr-ft2-F/Btu

0.0001 0.00025SI Units – m2-K/kW

0.018 0.044

Final SelectionA final selection must be done by thelocal Trane sales engineer using theTrane Horizon Single-Stage AbsorptionSelection Program. For applicationshigher than 1600 feet [500 meters] abovesea level, final selection requires reviewby Absorption Product Marketing. Priorto accessing the computer selectionprogram, the following data inputsshould be tabulated:• Temperature or pressure of the hotwater or steam

• Two of the following three values mustbe provided1:– Evaporator Delta-T– Evaporator Flow– Cooling Capacity

• Leaving-Evaporator Water Temperature• Entering-Absorber Water Temperature• Cooling Water Flow• Chilled water and tower water foulingfactors

Other options that may also be selectedare:• Type and thickness of tube material• Type of solution flowing through theevaporator and tower loop2.

1 Any limitations or restrictions shouldalso be given (i.e., pressure drop, gpmetc.).

2 Absorption chillers can be selected witha wide variety of media other thanwater (evaporator and absorber/condenser, or both). For media otherthan water, contact the local Trane salesoffice for chiller selections andinformation.

Additional FoulingAny selection that uses a fouling factorgreater than 0.0001 for the evaporatortubes, and 0.00025 for the condenser/absorber tubes, is a more conservativeestimate that should only be used ifthere is an abnormal amount of foulingcontaminants in the water systems. TheARI 560 Standard defines “additionalfouling” as “Conditions such as waterhardness, organic material, suspendedsolids and/or water velocity maynecessitate the use of a greater fieldfouling allowance than that provided inthe Standard Rating of equipment.” TheTrane single-stage Horizon Selectionprogram should be used to determinethe effect of nonstandard fouling factors.The following guidelines can be used forestimation prior to the selection:

ARI Standard Fouling Factors ForAdditional Fouling

Evaporator Condenser/AbsorberEnglish Units – hr-ft2-F/Btu

0.0002 0.00026 – 0.00075SI Units – m2-K/kW

0.035 0.046

Part Load PerformanceThe Horizon single-stage absorptionchiller exhibits excellent part-loadperformance characteristics. Airconditioning system loads are usuallysignificantly less than full-load designconditions. Therefore, the absorptionchiller operates at full load a smallpercentage of the time. Part-loadabsorption chiller operation is normallyassociated with reduced tower-watertemperatures. At part-load operation, theheat rejected to the cooling tower is lessthan at full-load operation. Also, part-load operation is typically associatedwith reduced outside wet-bulbtemperatures, resulting in improvedcooling tower performance. The netresult of less heat rejection and lowerwet-bulb temperature is cooler towerwater entering the chiller and improvedunit performance.

Page 10: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

ABS-PRC001-EN10

SelectionProcedure

SelectionProduct Coding DescriptionThe coding block precisely identifies allcharacteristics of any Horizon™ Single-StageSteam-Fired or Hot Water Absorption Chiller.

Table S-1. Product coding description

MODL Absorption Unit ModelABSD Single Stage AbsorptionNTON Unit Nominal Tonnage500 500 Nominal Tons600 600 Nominal Tons700 700 Nominal Tons800 800 Nominal Tons975 975 Nominal Tons1100 1100 Nominal Tons1225 1225 Nominal Tons1350 1350 Nominal TonsVOLT Unit Voltage190 190 Volt - 50 HZ200 200 Volt - 60 HZ220 220 Volt - 50 HZ230 230 Volt - 60 HZ380 380 Volt - 50 HZ415 415 Volt - 50 HZ460 460 Volt - 60 HZ575 575 Volt - 60 HZENSR Unit Energy SourceSTM Steam Energy SourceHOTW Hot Water Energy SourceENPR Unit Energy Pressure50 Steam Energy Pressure - 50 PSIG

ASME Required150 Hot Water Energy Pressure - 150

PSIG - ASME Required400 Hot Water Energy Pressure – 400

PSIG - ASME RequiredPVCN Pressure Vessel ConstructionSTD Standard Construction

Standard construction (includesASME LTGN)

PURG Purge SystemAUTO Automatic Purge SystemLGTM Generator TubesSB04 .028 Wall 90-10 CUNI Smooth

SurfaceSB05 .035 Wall 90-10 CUNI Smooth

SurfaceSB06 .049 Wall 90-10 CUNI Smooth

SurfaceSB16 .028 wall 409 SST smooth surfaceCDTM Condenser TubesSB09 .028 Wall Copper Smooth SurfaceSB10 .035 Wall Copper Smooth SurfaceSB04 .028 Wall 90-10 CUNI Smooth

SurfaceSB05 .035 Wall 90-10 CUNI Smooth

SurfaceSB06 .049 Wall 90-10 CUNI Smooth

SurfaceSB17 .028w 316L SST Smooth Surface

EVTM Evaporator TubesES12 .025 Wall Copper Enhanced SurfaceES11 .025 Wall 90-10 CUNI Enhanced

SurfaceES05 .035 Wall 90-10 CUNI Enhanced

SurfaceABTM Absorber TubesSB00 .022 Wall 95-5 CUNI Smooth SurfaceSB01 .028 Wall 95-5 CUNI Smooth SurfaceSB02 .035 Wall 95-5 CUNI Smooth SurfaceSB03 .049 Wall 95-5 CUNI Smooth SurfaceSB04 .028 Wall 90-10 CUNI Smooth

SurfaceSB05 .035 Wall 90-10 CUNI Smooth

SurfaceSB06 .049 Wall 90-10 CUNI Smooth

SurfaceSB09 .028 Wall Copper Smooth SurfaceSB17 .028 Wall 316L SST Smooth SurfaceGNWA LTGN - Generator Water Box

ArrangementGN02 1-Pass Non-Marine RF FlangeGN04 2-Pass Non-Marine RF FlangeCAWA Condenser and Absorber Water Box

ArrangementCA17 150 PSI Marine VictaulicCA18 150 PSI Marine RF FlangeCA19 150 PSI Non-Marine VictaulicCA20 150 PSI Non-Marine RF FlangeEVWA Evaporator Water Box ArrangementEV31 1-Pass 150 PSI Non-Marine VictaulicEV32 1-Pass 150 PSI Non-Marine RF FlangeEV01 2-Pass 150 PSI Non-Marine VictaulicEV02 2-Pass 150 PSI Non-Marine RF FlangeCAWC Condenser and Absorber Water

ConnectionsRERE In right-hand end – out right-hand

end (700, 800, 1100, 1225, 1350 tons)LELE In left-hand end – out left-hand end

(500 tons)LERE In left-hand end – out right-hand end

(600 and 900 tons)EVWC Evaporator Water ConnectionsLEBK Inlet Connection Left BackLEFR Inlet Connection Left FrontREBK Inlet Connection Right BackREFR Inlet Connection Right FrontLEND In left end, out the other endREND In right end, out the other endCAFT Condenser and Absorber Water Box

Fluid TypeWTR WaterEGLY Ethylene Glycol SolutionPGLY Propylene Glycol SolutionEVFT Evaporator Water Box Fluid TypeWTR WaterEGLY Ethylene Glycol SolutionPGLY Propylene Glycol Solution

Product CodingDescription

Page 11: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

11ABS-PRC001-EN

SelectionProcedure

EVLV Unit Energy ValveBF02 2-Way 3" 150# Wafer BtrflyBF03 2-Way 4" 150# Wafer BtrflyBF04 2-Way 6" 150# Wafer BtrflyBF05 2-Way 8" 150# Wafer BtrflyBF22 3-Way 3" 150# Flanged tee Wafer

BtrflyBF23 3-Way 4" 150# Flanged tee Wafer

BtrflyBF24 3-Way 6" 150# Flanged tee Wafer

BtrflyBF32 3-Way 3" 300# Flanged tee Wafer

BtrflyBF33 3-Way 4" 300# Flanged tee Wafer

BtrflyBF34 3-Way 6" 300# Flanged tee Wafer

BtrflyBF42 2-Way 3" 150# Flanged BtrflyBF43 2-Way 4" 150# Flanged BtrflyBF44 2-Way 6" 150# Flanged BtrflyBF45 2-Way 8" 150# Flanged BtrflyVB01 2-Way 2" 150# Wafer V-BallVB02 2-Way 3" 150# Wafer V-BallVB03 2-Way 4" 150# Wafer V-BallVB11 2-Way 2" 300# Wafer V-BallVB12 2-Way 3" 300# Wafer V-BallVB13 2-Way 4" 300# Wafer V-BallVB41 2-Way 2" 150# Flanged V-BallVB42 2-Way 3" 150# Flanged V-BallVB43 2-Way 4" 150# Flanged V-BallEVIN Unit Energy Valve InstallationFLD Field-installed Energy ValveFACT Factory-installed Energy ValveEVPN Evaporator Pan constructionSTD Evaporator Pan – SteelSSTL Evaporator Pan – Stainless SteelUPNT Unit PaintSFPT Standard Factory Paint – Entire UnitCSPT Customer Specified Paint – Entire

UnitWCNM Water Chiller NameplateSNMP Standard ABS Water Chiller

NameplateBNMP Decorative Brass ABS Water Chiller

NameplateSPKG Unit Shipping PackageDAU Domestic – Assembled UnitDDG Domestic – 2-Piece Disassembled

UnitDAGF Domestic – Assembled - 2-Piece Field

DisassemblyEAU Export – Assembled UnitEDG Export – 2-Piece Disassembled UnitEAGF Export – Assembled - 2-Piece Field

Disassembly

ELPP Electrical Protection PackageSELP Standard Electrical PackagePPCO Control Panel Power ConnectionCB Circuit BreakerFDS Fused Disconnect SwitchNFDS Non-Fused Disconnect SwitchTB Terminal BlockLCLD Local Clear Language DisplayCLDC Clear Language Display – Complex

CharacterCLDO Clear Language Display – Suitable for

Outdoor UseTRIM Tracer Interface Control ModuleTRMI Tracer 100 Interface Module (com3)TRMS Tracer Summit Interface Module

(com4)PRIM Printer Interface Control ModuleYES Printer Interface ModuleACWR Ambient Chilled Water ResetYES Ambient Chilled Water ResetWVUO Under/Over Phase Voltage

ProtectionYES Under/over Voltage ProtectionCTWF Chiller/Tower Water Flow DisplayYES Differential Water Pressure

TransducersOPTM Options Control ModuleYES Options ModuleAFDS Adjustable frequency driveYES Frequency driveFLSW Flow Switches1FS1 150 PSI NEMA 1 Flow Switch

- QTY of 11FS2 300 PSI NEMA 1 Flow Switch

- QTY of 11FS3 150 PSI NEMA 4 Flow Switch

- QTY of 11FS4 300 PSI NEMA 4 Flow Switch

- QTY of 12FS1 150 PSI NEMA 1 Flow Switch

- QTY of 22FS2 300 PSI NEMA 1 Flow Switch

- QTY of 22FS3 150 PSI NEMA 4 Flow Switch

- QTY of 22FS4 300 PSI NEMA 4 Flow Switch

- QTY of 2LBMF Lithium Bromide FilterYes Lithium Bromide FilterUINS Unit InsulationCINS Cold Unit Insulation OnlyCRPI Condenser Cross-Over pipeYes Condenser cross-over pipe,

factory installed

Product CodingDescription

Page 12: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

ABS-PRC001-EN12

PerformanceData

Table PD-1. Performance data at ARI conditionsEnglish Units*

Coefficient Steam Chilled Water Cond/Abs WaterCapacity of Rate Flow Rate Press. Drop Flow Rate Press. Drop

Model (Tons) Performance (lbm/ton/hr) (gpm) (ft Wtr) (gpm)*** (ft Wtr)ABSD500 571 0.71 17.71 1366 19.7 1800 27.4ABSD600 670 0.72 17.45 1603 30.2 2160 26.6ABSD700 738 0.71 17.68 1766 22.3 2520 12.2ABSD800 859 0.72 17.62 2054 32.6 2880 16.6ABSD975 998 0.71 17.91 2387 18.8 3510 33.5ABSD1100 1105 0.70 17.98 2643 24.6 3960 20.1ABSD1225 1238 0.70 17.95 2960 32.7 4410 25.7ABSD1350 1371 0.71 17.90 3279 42.2 4860 32.2

* 3.6 gpm/nominal ton, Pstm = 12 psig, TctwS = 85°F, TcwS = 44°F, TcwR = 54°F, 0.0001 evap fouling,0.00025 cond/abs fouling

SI Units**Coefficient Steam Chilled Water Cond/Abs Water

Capacity of Rate Flow Rate Press. Drop Flow Rate Press. DropModel (kW) Performance (kg/kW-hr) (m3/hr) (m wg) (m3/hr) (m wg)ABSD500 2008 0.71 2.28 310 6.0 409 8.3ABSD600 2356 0.72 2.25 364 9.2 491 8.1ABSD700 2595 0.71 2.28 401 6.8 572 3.7ABSD800 3021 0.72 2.27 466 9.9 654 5.1ABSD975 3510 0.71 2.31 542 5.7 797 10.2ABSD1100 3886 0.70 2.32 600 7.5 899 6.1ABSD1225 4354 0.70 2.31 672 10.0 1002 7.8ABSD1350 4821 0.71 2.31 745 12.9 1104 9.8

** 0.23 m3/nominal kWh, Pstm = 0.83 bar, TctwS = 29.4°C, TcwS = 6.67°C, TcwR = 12.2°C, 0.018 evap fouling,0.044 cond/abs fouling

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Figure PD-1. ABSD 500-800 capacity vs. chilled-water supply temperature at various cooling-water supply temperatures

PerformanceData

Figure PD-2. ABSD 975-1350 capacity vs. chilled water supply temperature at various cooling water supply temperatures

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PerformanceData

Figure PD-4. ABSD 975-1350 part load performance - energy input vs. capacity at various cooling water supply temperatures: chilled water supply temperature = 44°F (7°C)

Figure PD-3. ABSD 500-800 part load performance - energy input vs. capacity at various cooling water supply temperatures: chilled water supply temperature = 44°F (7°C)

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PerformanceData

Pressure Drop vs.Water Flow Rate

Figure PD-5. ABSD 500-800 pressure drop vs. chilled water flow rate – English and SI Units

Figure PD-6. ABSD 975-1350 pressure drop vs. chilled water flow rate – English and SI Units

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PerformanceData

Pressure Drop vs.Water Flow Rate

Figure PD-7. ABSD 500-800 pressure drop vs. cooling water flow rate – English and SI Units

Figure PD-8. ABSD 975-1350 pressure drop vs. cooling water flow rate – English and SI Units

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ElectricalData

Electrical DataFactory-wired and-mounted power control includes main power connections. Total kW includes solution and refrigerant pump,motors, purge pump motor and control panel. Units may be supplied for operation on 230,460 or 575 volt, 3-phase, 60-hertzpower, or 190, 220, 380 or 415 volt, 3-phase, 50-hertz power.

Table ED-1. Electrical data60 Hertz, 3-Phase

Supply Total Motor Total Motor Control Circuit Max Fuse SizeModel Voltage FLA HP kW Amps MCA Amps

500 200 69.0 13.0 9.7 10.0 86 90thru 230 60.0 13.0 9.7 8.7 75 80600 460 30.0 13.0 9.7 4.4 37 40

575 25.0 13.0 9.7 3.5 31 35700 200 90.0 17.5 13.0 10.0 109 110thru 230 78.0 17.5 13.0 8.7 94 100800 460 39.0 17.5 13.0 4.4 47 50

575 32.0 17.5 13.0 3.5 39 40200 90.0 17.5 13.0 10.0 109 110

975 230 78.0 17.5 13.0 8.7 94 100460 39.0 17.5 13.0 4.4 47 50575 32.0 17.5 13.0 3.5 39 40

1100 200 96.0 20.0 14.9 10.0 115 125thru 230 84.0 20.0 14.9 8.7 100 1101350 460 42.0 20.0 14.9 4.4 50 60

575 34.0 20.0 14.9 3.5 41 4550 Hertz, 3-Phase

Supply Total Motor Total Motor Control Circuit Max Fuse SizeModel Voltage FLA HP kW Amps MCA Amps

500 190 62.0 13.0 9.7 10.5 79 80thru 220 52.4 13.0 9.7 9.1 67 70600 380 30.0 13.0 9.7 5.3 38 40

415 27.5 13.0 9.7 4.8 35 35700 190 67.0 15.5 11.6 10.5 85 90thru 220 57.4 15.5 11.6 9.1 73 80800 380 33.0 15.5 11.6 5.3 42 45

415 30.5 15.5 11.6 4.8 39 40975 190 80.0 17.5 13.0 10.5 98 100

220 68.0 17.5 13.0 9.1 84 90380 39.0 17.5 13.0 5.3 48 50415 36.0 17.5 13.0 4.8 44 45

1100 190 85.0 20.0 14.9 10.5 103 110thru 220 73.0 20.0 14.9 9.1 89 901350 380 42.0 20.0 14.9 5.3 51 60

415 39.0 20.0 14.9 4.8 47 50

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ElectricalData Wiring

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ElectricalData Wiring

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Controls Data

Setting The StandardsTrane set the standard for unitmicroprocessor controls in 1985 with thefirst generation of Unit Control Panel.Associated with this standard have been:• Proportional Integral Derivative (PID)

control strategies, which provide stableoperation and high accuracy for betterperformance, along with feed forwardplus;

• Adaptive Control™ to keep the chiller“on line” and at the same time keep thechiller away from a major failure;

• Software based safeties that do notdepend on electromechanical hardware– hardware that means questionablereliability and added cost;

• Operator interface that accesses chillerinformation and control adjustments atthe front of the panel.

UCP2™

UCP2 adds more flexibility, morereliability and better system performancethan even our most demandingcustomers expect.

FlexibilityTrane offers the ability to adapt tochanges easily and effectively withoutadding prohibitive cost. To provideflexibility, the controller responds to awide variety of needs for:

• System Designs, including equipment,operating conditions and controlsvariations that are either existing orbeing considered for new installations.

Key to designing non-traditionalsystems is the ability to evaluate thecost and reliability issues of thesesystems in comparison to the moretraditional systems. Trane recommendsthe use of C.D.S. Network EquipmentEconomics, the Trane ApplicationsManuals and consultation with a Tranesales engineer for help in this analysis.

• System Upgrades, including the abilityto accommodate changes in the chilled-water system design or equipmentroom requirements, or toaccommodate new technologies thatbecome available.

• Modular structure of the UCP2 makes itpossible for the designer to select thesystem controls and associatedinterfaces to Tracer® (or other buildingautomation systems) that are requiredfor the chiller plant design. With thismodular concept, capability can beadded or upgraded at any time, withonly temporary interruption of chilled-water production.

• The operator can quickly program aCustom Report — so that only what areconsidered to be the most frequentlyaccessed/important reports areavailable — at any time, right at thefront of the panel.

• With easy front panel programmabilityof Daily, Service Start-up and MachineConfiguration settings and setpoints,the operator, serviceman and systemdesigner can customize the use of themicro controller to unique conditions ofthe chiller plant — whether the purposeof chilled water is for comfort cooling orfor process cooling.

• All data that is necessary for the safeoperation and easy serviceability of thechiller is provided as standard on allHorizon® absorption chillers. Optionsare available that provide additionalcontrols/data that are required for: anindustrial/process system design,applications outside of the typicalchilled water system design, the needfor redundant machine protection or thedesire for more system information.

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ReliabilityTo most people, reliability means“dependability — giving the same resulton successive trials.” To our customers,however, it has come to mean “keepchilled water flowing.” In other words,“when I turn the switch on, cold watercomes out.” In order to do this, themicro controller must be aware of whatis happening in the system. But moreimportantly, it must be able to makedecisions and adjustments to keep thechiller running as long as possible, evenwhen non-standard conditions exist —conditions such as bad power, bad water(flow, temperature, fouling) or systemcomponent failure. Also, the Trane UCP2panel continuously monitors fornoncondensables and purgesautomatically.• With Enhanced Adaptive Control™ thecontroller does everything it can toavoid taking the chiller offline.— Senses evaporator temperature

limit and high temperature limit— Displays a warning message about

the potential condition/safety trip— Takes the following corrective action

sequentially as the conditionworsens:- limits loading- prevents further loading- unloads until condition improves- takes chiller offline

• With more diagnostics and diagnostichistory that are time/date stamped andwith help messages, the operator orserviceman can take faster and moreeffective corrective action.

System Performance“Chilled Water System” encompassesmany levels of control: StandaloneChiller, Chiller Plant, Applied System,Central Building Automation System.However, regardless of the system levelbeing designed, the unit controlsbecome critical, not just in making everylevel operate reliably but also infacilitating optimal performance. UCP2provides more capability and moreintelligence to make this operation/optimization possible.

Panel Features:The absorption chiller Unit Control Panel(UCP2) incorporates the followingfeatures and components:

Control Functions• Smart dilution-cycle duration based onsystem requirements

• Adaptive evaporator leaving-fluidtemperature control

• Low evaporator-temperature limit• High solution-temperature limit• Solution flow control via AFD• Soft loading• Nuisance trip prevention via AdaptiveControl

• Chilled-water reset• Optimum concentration control• Crystallization recovery via SDR

Controls Data

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Cycle ReportRefrigerant temperatures and pressures:• Solution temperature leaving generator• Solution temperature entering

generator• Generator-leaving concentration• Generator cutout and monitor

temperature• Crystallization detection temperature• Crystallization trip temperature• Saturated condenser refrigerant

temperature• Absorber-entering concentration• LiBr crystallization margin• Solution temperature entering absorber• Absorber spray temperature• Solution temperature leaving absorber• Saturated evaporator refrigerant

temperature• Evaporator leaving-water temperature• Evaporator entering-water temperature• Absorber entering-water temperature• Absorber leaving-water temperature• Condenser leaving-water temperature• Solution pump auto/manual speed

command• Energy input auto/manual/slaved

reported command• Steam Supply Pressure• Generator Steam Pressure

Pump/Purge Report• Solution pump

— Counters for starts and hours— Motor phase currents— Motor phase voltages (optional)

• Purge Pump— Operating mode and status— Refrigerant suction temperature— Pumpout rate— Total pumpout time— Service log

Controls Data

Safeties• Smart shutdown sequence: condenser/

absorber loss of flow• Low condenser/absorber water

temperature• High-pressure cutout• Evaporator leaving-fluid temperature

cutout• Motor current overload• High motor-winding temperature• Over/under voltage (optional)• Purge limit• Sensor failure detection

Monitored PointsChiller information is available at theoperator interface via a clear languagedisplay. Access to the information isthrough four dedicated report keys:Customer, Chiller, Cycle and Pump/Purge.

Customer ReportUser-defined custom report (operatormay choose up to 20 points from a list ofover 100 choices).

Chiller ReportStatus, fluid temperatures, and setpoints:• Operating mode (i.e. run status)• Chilled-water setpoint• Evaporator entering/leaving water

temperatures• Absorber entering/leaving water

temperatures• Condenser leaving-water temperature

outdoor air temperature• Evaporator leaving-water temperature• Chilled-water reset

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Controls Data

DiagnosticsThe absorption chiller Unit Control Panel(UCP2) provides over 70 differentdiagnostics such as:• Water and refrigerant/solutiontemperatures out of range

• Loss of system waterflows• Sensor and switch faults• Overload trips• Over/under voltage (optional)• Crystallization recovery• Emergency stop• Loss of communication to othermodules

• Motor abnormal

Operator InterfaceThe Trane Horizon® steam-firedabsorption chiller control panel, UCP2, iseasy to use, understand, accessinformation, read, change setpoints,diagnose problems, maintain, and toreset after shutdown.

ConvenienceEnunciation of all information is at thefront panel display (including power,voltage, amps, purge pressures, andnumber of starts data). Messages aredisplayed using clear language.

Readability• Two-line, 40-character display that iseasy to read from within a 60-degreeangle

• LCD backlight so that the display can beread in a variety of equipment-roomlighting

• Seven languages available• Metric (SI) units available• Complete character human interfaceavailable

Ease of Use• Keypad programmability — no manualswitches or setpoint potentiometers

• Logically arranged report groups withreport header and setpoint groups

• Selectable security• Variable points updated every twoseconds

• Messages that direct user to problemsource via a menu item

Trane ICS CompatibilityThe Trane absorption chiller controlpanel, UCP2, is 100 percent compatiblewith the Trane Integrated Comfort™

systems, ICS, UCP2 easily integrates intothe Tracer® family of flexible chiller-plantsystem controllers with a single twisted-wire pair communications cable.

For more information on the Traneabsorption chiller unit control panel,please contact your local Trane salesengineer.

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This section provides the overall dimensions of the Horizon absorption chiller.See unit submittal drawings for configured water nozzle connection dimensions.All catalog dimensional drawings are subject to change. Current submittal drawingsshould be referred to for detailed dimensional information. Contact the local Tranesales office for submittal and template information.

Table DW-1. Dimensional dataEnglish Units

Unit A B C D E F500 13’-9½” 14’-5½” 1’-73/8” 17’-9¾” 14’-21/8” 8’-07/8”600 16’-5½” 17’-1½” 1’-87/8” 20’-7¼” 16’-101/8” 10’-87/8”700 19’-13/8” 19’-9½” 1’-87/8” 23’-3¼” 19’-61/8” 13’-111/8”800 21’-93/8” 22’-5½” 1’-87/8” 25’-11¼” 22’-21/8” 16’-107/8”

SI Units

Unit A B C D E F500 4204 4407 492 5429 4321 2461600 5017 5220 530 6280 5134 3273700 5826 6033 530 7093 5947 4245800 6639 6845 530 7906 6760 5153

Dimensionsand Weights

ABSD 500, 600, 700, 800Physical DimensionsEnglish and SI Units

PhysicalDimensions

Above drawing is representative of ABSD 500 only.

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Dimensionsand Weights

PhysicalDimensions

Table DW-2. English to SI UnitsCross Reference

Conversion Chart(Ft. to mm)

English Units SI Units

1 7/8" 482" 511' 0 5/16" 3131' 1 1/2" 3431’ 1 9/16” 3441' 3 1/2" 3941' 8" 5081' 8 7/8" 5301' 11 9/16" 5982' 0 1/2" 6222' 8" 8132' 8 5/8" 8293' 1" 9403' 1 3/4" 9593’ 1 13/16” 9603' 5 7/8" 10643' 6" 10673' 9" 11434' 0 1/8" 12224' 6" 13724' 9" 14485' 3 7/8" 16226' 3" 19056' 7 1/2" 20197' 4" 22357' 5 7/16" 22728' 6 1/16" 25939' 5 1/`16" 28869' 6 9/16" 2910

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Dimensionsand Weights

PhysicalDimensions

This section provides the overall dimensions of the Horizon absorption chiller.See unit submittal drawings for configured water nozzle connection dimensions. Allcatalog dimensional drawings are subject to change. Current submittal drawingsshould be referred to for detailed dimensional information. Contact the local Tranesales office for submittal and template information.

Table DW-3. Dimensional dataEnglish Units

Unit A B D E F975 17' - 7 1/2" 18' - 0" 21' - 8" 17' - 3" N/A1100 19' - 7 1/2" 20' - 0" 23' - 8" 19' - 3" N/A1225 21' - 7 1/2" 22' - 0" 25' - 8" 21' - 3" N/A1350 23' - 7 1/2" 24' - 0" 27' - 8" 23' - 3" N/A

SI Units

Unit A B D E F975 5372 5486 6604 5258 N/A1100 5982 6096 7214 5868 N/A1225 6591 6705 7823 6477 N/A1350 7201 7315 8433 7087 N/A

ABSD 975, 1100, 1225, 1350Physical DimensionsEnglish and SI Units

Above drawing is representative of ABSD 1100-1350 only.

ABSD 975 has a 2-pass absorber section.

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Dimensionsand Weights

PhysicalDimensions

Table DW-4. English to SI UnitsCross Reference

Conversion Chart(Ft. to mm)

English Units SI Units

4' - 2 1/16" 502" 513 1/4" 839 1/2" 24110 1/16" 2561' - 2 3/4" 3751' - 3 1/2" 3941' - 4 7/16" 4181' - 9 7/8" 5562' - 3 5/8" 7023' - 3 1/8" 9943' - 4" 10163' - 6" 10673' - 8" 11184' - 6" 13725' - 1 15/16" 15735' - 2 7/16" 15865' - 9 3/4" 17726' - 0" 18296' - 9 7/8" 20807' - 4 1/8" 22388' - 2 5/16" 24978' - 4 1/4" 25468' - 10 5/8" 27089' - 6 9/16" 29109' - 7 11/16" 293811' - 6 1/4" 351211' - 7 1/2" 3543

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Separated Machine SectionsDisassembled machines can ship to thejob site in two main sections, theevaporator/ absorber as a section andthe low temperature generator/condenser as a separate section. Contactthe local Trane sales office for currentsubmittal information.

Figure DW-1. Disassembly options – right end view

Dimensionsand Weights

DisassemblyOptions

Table DW-5. Disassembly and center of gravity dimensionsUnit Size 500 600 700 800 975 1100 1225 1350

English Units

A 6’ 7” 6’ 7” 6’ 7” 6’ 7” 8'-2 3/8” 8'-2 3/8” 8'-2 3/8” 8'-2 3/8”B 3’ 5 5/8” 3’ 5 5/8” 3’ 5 5/8” 3’ 5 5/8” 3'-11¼” 3'-11¼” 3'-11¼” 3'-11¼”C 3’ 9 3/8” 3’ 10” 3’ 10 1/8” 3’ 10 3/8” 4'-8 ¾" 4'-8 ¾" 4'-8 ¾" 4'-8 ¾"

D* 7’ 3” 7’ 3” 7’ 3” 7’ 3” 8'-2 5/8" 8'-2 5/8" 8'-2 5/8" 8'-2 5/8"E 3’ 2 5/8” 3’ 2 5/8” 3’ 2 5/8” 3’ 2 5/8” 4'-2 3/8" 4'-2 3/8" 4'-2 3/8" 4'-2 3/8"F 6’ 0 3/8” 6’ 0 3/8” 6’ 0 3/8” 6’ 0 3/8” 7'-7" 7'-7" 7'-7" 7'-7"G 2’ 9” 2’ 9” 2’ 9” 2’ 9” 3'-8 1/2" 3'-8 1/2" 3'-8 1/2" 3'-8 1/2"H 1’ 6½” 1’ 6½” 1’ 6½” 1’ 6 ½” 2'-0 3/8" 2'-0 3/8" 2'-0 3/8" 2'-0 3/8"

SI Units (mm)

A 2007 2007 2007 2007 2499 2499 2499 2499B 1057 1057 1057 1057 1200 1200 1200 1200C 1153 1168 1172 1178 1441 1441 1441 1441D 2210 2210 2210 2210 2505 2505 2505 2505E 981 981 981 981 1280 1280 1280 1280F 1838 1838 1838 1838 2311 2311 2311 2311G 838 838 838 838 1130 1130 1130 1130H 470 470 470 470 619 619 619 619

*Indicates overall height of chiller. The top of the evaporator shell is the highest point on chiller sizes 975-1350 tons. The top of the control panel is the highest point on chillers 800 tons andbelow.

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Dimensionsand Weights Rigging

Foundation SupportThe foundation must be level, smooth,and capable of supporting the machineweight. The machine legs should bepositioned over isolation pads. Ahousekeeping pad or support rail isrecommended to elevate the machinefor maintenance. Any foundation padshould provide adequate structuralsupport and keep the installed machinelevel within 1/16-inch [1.6 mm] by lengthand width for reliable operation.Leveling marks on the evaporator andabsorber tube sheet can be used tocheck the machine after it is positionedon the pad.

Chiller IsolationIsolation pads are provided with eachunit. The purpose of the isolation pad isto distribute the machine weight andminimize sound and vibrationtransmission through the buildingstructure.

Figure DW-2. Typical machine rigging points

Figure DW-3. Unit anchoring detail – all sizes

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Dimensionsand Weights

ServiceClearances

Figure DW-4. Service clearances

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Rigging and Service ClearancesService clearance is required on all sidesof the machine. Pay particular attentionto the control panel door clearance andthe clearance at one end for tube service.

Figure DW-4 and Table DW-6 illustratethe recommended clearances for normalservice and tube replacement. Whensufficient overhead clearance exists, werecommend placing a 6-8 inch(150-200 mm) extension underneath themachine legs for additional access underthe chiller.

Overhead lift is the recommendedmethod when moving a machine.Before lifting the machine, determine theapproximate location of the center ofgravity.

Table DW-6. Service clearancesEnglish Units

Unit Size 500 600 700 800 975 1100 1225 1350A 33' - 10 1/4" 39' - 2 1/4" 44' - 6 1/4" 49' - 10 1/4" 40' - 11 7/8" 44' - 11 7/8" 48' - 11 7/8" 52' - 11 7/8"B 10' - 1" 12' - 9" 15' - 5" 18' - 1" 13' - 4 1/8" 15' - 4 1/8" 17' - 4 1/8" 19' - 4 1/8"C 11' - 3 7/8" 13' - 11 7/8" 16' - 7 7/8" 19' - 3 7/8" 15' - 1" 17' - 1" 19' - 1" 21' - 1"D 6' - 0" 6' - 0" 6' - 0" 6' - 0" 5' - 7 3/8" 5' - 7 3/8" 5' - 7 3/8" 5' - 7 3/8"E 5' - 3" 5' - 3" 5' - 3" 5' - 3" 5' - 3 1/2" 5' - 3 1/2" 5' - 3 1/2" 5' - 3 1/2"F 8' - 6" 8' - 6" 8' - 6" 8' - 6" 9' - 10 7/8" 9' - 10 7/8" 9' - 10 7/8" 9' - 10 7/8"G 13' - 9" 13' - 9" 13' - 9" 13' - 9" 15' - 2 3/8" 15' - 2 3/8" 15' - 2 3/8" 15' - 2 3/8"H 5' - 7" 5' - 7" 5' - 7" 5' - 7" 5' - 7 3/8" 5' - 7 3/8" 5' - 7 3/8" 5' - 7 3/8"J 4' - 1" 4' - 1" 4' - 1" 4' - 1" 5' - 4 1/4" 5' - 4 1/4" 5' - 4 1/4" 5' - 4 1/4"K 5 3/8" 5 3/8" 5 3/8" 5 3/8" 8" 8" 8" 8"L 10 3/4" 10 3/4" 10 3/4" 10 3/4" 16" 16" 16" 16"M 10 1/2" 10 1/2" 10 1/2" 10 1/2" 10" 10" 10" 10"N 3' - 0" 3' - 0" 3' - 0" 3' - 0" 4' - 4" 4' - 4" 4' - 4" 4' - 4"P 4' - 9" 4' - 9" 4' - 9" 4' - 9" 6' - 0" 6' - 0" 6' - 0" 6' - 0"

SI Units (mm)

Unit Size 500 600 700 800 975 1100 1225 1350A 10319 11944 13570 15196 12494 13713 14932 16151B 3073 3886 4699 5512 4067 4677 5286 5896C 3451 4264 5077 5890 4597 5207 5817 6426D 1829 1829 1829 1829 1711 1711 1711 1711E 1600 1600 1600 1600 1613 1613 1613 1613F 2591 2591 2591 2591 3019 3019 3019 3019G 4191 4191 4191 4191 4632 4632 4632 4632H 1702 1702 1702 1702 1711 1711 1711 1711J 1245 1245 1245 1245 1632 1632 1632 1632K 137 137 137 137 203 203 203 203L 273 273 273 273 406 406 406 406M 267 267 267 267 254 254 254 254N 914 914 914 914 1321 1321 1321 1321P 1448 1448 1448 1448 1829 1829 1829 1829

Dimensionsand Weights

ServiceClearances

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Dimensionsand Weights

ColdInsulation

Low Temperature Insulation (Cold

Insulation Type)Cold insulation can be ordered as afactory-installed option. The quantityand the areas to be covered areillustrated in Table DW-7 andFigure DW-5.

Figure DW-5. Cold insulation

Table DW-7. Cold insulation area and lengthEnglish Units

Refrigerant Storage TubesheetsTank Circuit Evaporator Shell & Water Boxs 2" Pipe 4.50" Pipe

500T 45.01 sq. ft 500T 97.65 sq. ft 500T-800T 99.74 sq. ft 500T-800T 11.19 LN FT 500T-800T 2.625 LN FT600T 55.53 sq. ft 600T 115.87 sq. ft700T 66.04 sq. ft 700T 134.12 sq. ft800T 76.55 sq. ft 800T 152.32 sq. ftRefrigerant Storage Tubesheets

Tank Circuit Evaporator Shell & Water Boxs 3.50" Pipe 4.00" Pipe 4.50" Pipe975T-1350T 64.876 sq. ft 975T 154.24 sq. ft 975T-1350T 164.32 sq. ft 975T-1350T 5.97 LN FT 975T-1350T 2.92 LN FT 975T-1350T 2.24 LN FT

1100T 171.58 sq. ft1225T 188.91 sq. ft1350T 206.26 sq. ft

SI Units

Refrigerant Storage TubesheetsTank Circuit Evaporator Shell & Water Boxs 2" Pipe 4.50" Pipe

500T 4.18 sq. m 500T 9.07 sq. m 500T-800T 9.27 sq. m 500T-800T 3411 mm 500T-800T 800 mm600T 5.16 sq. m. 600T 10.76 sq. m.700T 6.14 sq. m. 700T 12.46 sq. m.800T 7.11 sq. m. 800T 14.15 sq. m.Refrigerant Storage Tubesheets

Tank Circuit Evaporator Shell & Water Boxs 3.50" Pipe 4.00" Pipe 4.50" Pipe975T-1350T 6.03 sq. m 975T 14.33 sq. m 975T-1350T 15.27 sq. m 975T-1350T 1820 mm 975T-1350T 890 mm 975T-1350T 683 mm

1100T 15.94 sq. m.1225T 17.55 sq. m.1350T 19.16 sq. m.

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33ABS-PRC001-EN

Dimensionsand Weights

Table DW-8. Weights and connection sizesEnglish Units

Weights Connection Sizes Unit ChargingShipping Operating Evap Cond/Abs 54.7% Brine Refrigerant

Model [lbm] [lbm] [in] [in] [lbm] [gal]ABSD 500 25606 35420 8 8 4471 150ABSD 600 28639 39792 8 8 4878 190ABSD 700 31683 44939 10 10 5691 230ABSD 800 34843 49458 10 10 6098 270ABSD 975 42255 56967 12 12 6100 162ABSD 1100 45389 61183 12 12 6500 179ABSD 1225 48740 65664 12 12 6910 197ABSD 1350 51901 69916 12 12 7310 213

SI Units

Weights Connection Sizes Unit ChargingShipping Operating Evap Cond/Abs 54.7% Brine Refrigerant

Model [kg] [kg] [mm] [mm] [kg] [l]ABSD 500 11614 16066 203 203 2028 568ABSD 600 12990 18049 203 203 2213 719ABSD 700 14371 20384 254 254 2581 871ABSD 800 15804 22434 254 254 2766 1022ABSD 975 19166 25840 305 305 2767 613ABSD 1100 20588 27752 305 305 2948 679ABSD 1225 22108 29785 305 305 3134 745ABSD 1350 23542 31713 305 305 3316 805

Note: Weight information are estimates based on standard units. Weight and unit charging information can vary based on unit options and operating conditions.

Weights andConnection Sizes

Page 34: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

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Job SiteConnections

Steam Supply andCondensate Piping

Steam SupplyFigure JC-1 illustrates a typical steam-supply piping illustration that includesthe appropriate hardware.

The steam supply piping should bedesigned in accordance with gooddesign practice, providing strainers,unions and gate valves for ease ofoperation and maintenance. A properlysized steam-modulating valve, based ondesign flow and pressure droprequirements, is provided by The TraneCompany. Steam inlet connection isalways right end of unit.

A hand valve in the steam supply pipingis recommended when the machine willbe out of operation for an extendedperiod. The modulating steam valvemay experience a small amount ofleakage during shutdown. This leakagemay result in heating of the equipmentroom unless the machine is properlyisolated with a hand valve.

In all applications, it is recommendedthat the steam supply pressure to thecontrol valve inlet not exceed design toensure that the valve closes properly. Ifsteam supply pressures exceed design, apressure reducing station should beused to control the steam pressure to thevalve.

The unit control has adjustable featuresthat minimize steam draw on start-up.The adjustable steam-control featureallows the user to adapt the machine tothe available steam source capability.

Table JC-1. Steam supply and condensate return piping responsibilitiesMaterial Provided By Installed By

Item Trane Other Trane OtherEnergy Valve X XT-Type Strainer, Flanged connections, gate valve, drip legw/dirt pocket, float and thermostatic trap, pressure gauge vent X Xand valve, pressure reducing valve, pressure gauge, relief valvecheck valve, connecting piping.Rupture Disk Assembly X XRupture Disk Piping X X

Figure JC-1. Typical steam supply piping

Page 35: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

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Job SiteConnections

Steam Supply andCondensate Piping

Condensate HandlingFigure JC-1 illustrates a typicalcondensate system consisting of steamtraps, condensate receivers andcondensate pumps. Such systemsprovide the most economical method forreturning condensate to a boiler.Properly-sized float and thermostatictraps are required for proper operation.The use of bucket traps is notrecommended.

Trane absorption machines use steam-throttling control. A maximum of threepercent of the condensate may flash to avented receiver at full load. This flashingdecreases as the load decreases, and isvirtually nonexistent below 70 percentload. When the machine is operating atless than 70 percent load, the pressure inthe generator tube bundle may be belowatmospheric pressure. The temperatureof the condensate leaving the machineunder these conditions is less than 212°F[100°C], so flashing does not occur.

A subcooler may be installed ahead ofthe receiver to cool the condensate to atemperature below the saturationtemperature at atmospheric pressure,thus eliminating flashing entirely. It isrecommended that a cooling medium,such as boiler feed water, be used tokeep this energy within the system. Thepressure drop through the subcoolershould be minimized.

Figure JC-1 indicates an equalizer lineinstalled to avoid condensate backup inthe machine. The swing check opens if avacuum develops within the tube bundleunder part-load operation.

This prevents development of a lowerpressure in the concentrator than at theoutlet of the trap.

Packaged Condensate SystemsSeveral manufacturers have availablepackaged condensate-pump systems,designed for various condensatetemperatures. A decision regarding theuse of these systems with a Traneabsorption machine should be based ona thorough economic analysis of theparticular installation. The followingfactors should be considered:

1. Condensate may flash in the receiverless than 20 percent of the totaloperating time in a typical installation.The amount of condensate that mayflash varies from a maximum of threepercent at full load, to none at lessthan 70 percent load. A subcooler canbe used to eliminate the small amountof flashing that may occur when themachine is operating under heavyload.

2. The condensate system must preventcondensate from backing up into themachine at part load when thepressure in the generator tube bundleis below atmospheric pressure.

3. The condensate system must notdraw supply steam through themachine. This reduces the machineefficiency and may offset any potentialenergy savings that might otherwisebe realized by the use of thecondensate return system. Also,reduced tube life would result due toerosion.

If the decision is made to use a packagedcondensate-pump system, follow themanufacturer’s recommendationsregarding its application.

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Hot Water PipingThe hot water system must be designedsuch that it will avoid fluctuations in thepressure differences across the controlvalve. Trane absorption chillers for usewith hot water may be used at anentering hot-water temperature of 270°F[132°C] or below. Piping for a typical hotwater installation using a temperature of270°F [132°C] or less is shown in FigureJC-2. In this arrangement, a three-wayenergy valve is used to control capacityby varying the quantity of hot waterflowing through the chiller, whilemaintaining a constant supply andreturn flow rate. As shown in FigureJC-3, a two-way energy valve can alsobe used where the return and supplyflow rates can vary. The generatordesign is rated to 150 psig [10.3 bars]with a 400 psig [27.6 bars] optionaldesign available.

When the supply-water temperatureexceeds 270°F [132°C], a separatecirculating pump is recommended in arun-around loop as shown in FigureJC-4. The hot water for the absorptionmachine should be taken from a headerinstalled between the hot-water supplyand return mains. The flow of hot waterthrough the machine is held constant,but the temperature of the circulatingwater is varied to meet loadrequirements by modulating the amountof high-temperature supply water addedto the loop. This is done by installing atwo-way modulating valve at the loopoutlet. The valve responds to the chilled-water temperatures, but limits the watertemperature entering the machine to amaximum of 270°F [132°C].

Hot Water ValvesTrane provides hot-water temperature-control valves with the machine forinstallation by the contractor at the jobsite. These valves are selected by TheTrane company based on data providedby the contractor (*i.e. water flow to beused and the design pressure-dropacross the valve.)

It is desirable to use the smallest valve,with the highest pressure drop,appropriate to the design water flow andallowable pressure drop in the system.The smaller the valve, the better thecontrol. Hot water inlet connection isright end of unit.

Figure JC-2. Hot water supply piping – 270°F and below with 3-way energy valve

Job SiteConnections

Hot WaterPiping

Figure JC-3. Hot water supply piping – 270°F and below with 2-way energy valve

Page 37: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

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Job SiteConnections

Hot WaterPiping

Table JC-2. Hot water supply piping responsibilitiesMaterial Provided By Installed By

Item Trane Other Trane OtherEnergy Valve (2-Way/3-Way) X XGate valve, balance valve, Y-type strainer w/valve,bypass circuit, check valve, thermometer, pressure gauge, X Xvent shutoff valve, union or flanged connection circulating pumpRupture Disk Assembly X XRupture Disk Piping X X

Figure JC-4. Hot water supply temperature piping above 270°F

Page 38: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

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Job SiteConnections

CoolingWater Piping

Figure JC-5. Cooling-water piping with cooling tower

Figure JC-6. Cooling-water piping, three-way mixing valve

Cooling Water PipingThe cooling water piping design for theHorizon™ series of absorption chillersdiffers from conventional reciprocatingor centrifugal systems, in that coolingwater passes through the absorbersection of the machine prior to enteringthe condenser. The absorption chillermust control the start and stop ofcooling water flow.The Horizon Single Stage absorptionchiller is designed to start and operatewith cooling-water temperatures as lowas 55°F [12.8°C]. In typical applications,the machine is selected on the basis ofthe cooling-water temperature that willbe available at full-load and at the designoutside conditions. In air conditioningapplications utilizing a cooling tower, thisis usually 85°F [29.4°C].With a cooling tower sized at designconditions, the temperature of thecooling-water supply to the unit willdecrease with any decrease in coolingload or outside wet-bulb temperature.The lower cooling-water temperaturewould normally tend to increase thecapacity potential of the unit. In theTrane design, the UCP2 adaptivecontrols will limit the energy input of themachine based on the entering coolingwater temperature, thereby preventingoverfiring of the machine.In typical air-conditioning applications,precise cooling-water temperaturecontrol is not required. In processapplications, however, where extremelyclose control of leaving chilled-water isrequired, it is recommended that a towervalve be used to maintain cooling-watertemperature at a specified temperature.Constant cooling-water temperatureallows the unit control valve to moreprecisely control leaving chilled-watertemperature. Also, in applications wherewell water or other cooling water will beavailable at a temperature below 65°F[18.3°C], a control valve is recommendedto maintain the temperature at 65°F[18.3°C] or above. Changes in condenserwater temperature should not exceed1°F per minute in the range of 75°F to95°F [23.9 to 35°C].

Figure JC-5 illustrates a typical air-conditioning installation without acooling-tower control valve. Figure JC-6illustrates typical cooling-water piping inapplications where a three-way valvemay be required. Figure JC-7 illustratestypical cooling-water piping utilizing wellor river water.

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Figure JC-7. Cooling-water piping with well or river water

Table JC-3. Condenser/absorber piping responsibilityMaterial Provided By Installed By

Item Trane Other Trane OtherCrossover Pipe (factory installed X (factory installed

option) (option)X or X or

Flow Switch (optional) X X X or

Balancing valve, gate valve, thermometer(optional), pressure gauge vent and shutoff X Xvalve, Victaulic or flange connection, pipe stub,strainer, pump.

Job SiteConnections

CoolingWater Piping

Page 40: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

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MechanicalSpecifications

GeneralThe unit is a complete, single-effectsteam- or hot-water-fired absorptionchiller package, built in an ISO 9001environment. The chiller consists ofgenerator/condenser section,evaporator/absorber section, controls,pumps, heat exchanger, and energycontrol valve. All units are of hermeticdesign, factory-assembled and-leak-tested prior to shipment. Units can beseparated and shipped disassembled forrigging purposes. Unit controls arefactory mounted and wired, includingmicroelectronic control panel, sensorsand purge system. An energy valve canbe factory mounted and wired as anoption on steam-fired units. The unit ispainted prior to shipping with two coatsof a water-base air-dry primer. Standardmethod of shipment is by truck.

Generator/Condenser-Evaporator/AbsorberThe shell material is carbon steel. Thestandard generator tube material iscupro-nickel, the evaporator is copper,absorber is cupro-nickel or copper andthe condenser is copper. Tubes aremechanically rolled into the tube sheetsand are replaceable from either end.The condenser, evaporator and absorbertube supports are fixed. The generatorconsists of fixed and floating tubesupports to allow for even tubeexpansion. Solution spray systems arereplaceable from one end of the unitwithout sacrificing the hermetic integrityof the unit.

Design working pressure for the waterboxes is 150 psig [10.3 bars]. All tubebundles are tested at 150 percent ofdesign working pressure. All waterboxes have gasketed, removable coversfor access. Optional marine-type waterboxes can be provided on the condenserand absorber. Water connections areprovided with either victaulic or raised-face flanged connections.

Heat ExchangersA brazed-plate solution heat exchangeris provided to reduce energy use andimprove unit performance. Heatexchanger surfaces are 300 seriesstainless steel.

PumpsSolution and refrigerant are circulated bymeans of three hermetic, single-stagecentrifugal pumps. The pump impellersare cast iron, with a steel shaft supportedby two tapered carbon bearings. Thebearings are lubricated and the motor iscooled via the pumped fluid. Adjustable-frequency drives are provided on thegenerator pump and absorber pump toprovide solution flow control.

Automatic Purge SystemThe purge system utilizes an eductor formoving noncondensables to thecondenser, Purifier™ Purge to collect thenoncondensables in an external storagetank, and a vacuum pump for removal ofthe noncondensables. The purgeoperates automatically to removenoncondensables from the unit duringperiods of chiller operation andshutdown. Logging of purgeinformation is provided via the unitcontrol panel.

GeneratorThe shell is carbon steel. Tube sheets aresteel and standard generator tubes areconstructed of copper nickel. Thegenerator has fixed and floating tubesupports to allow for even tubeexpansion. The steam side of thegenerator is designed and stamped for50 psi ASME construction. For hot wateras the energy source, the generator isASME designed and stamped for 150 or400 psi [10.3 or 27.6 bars]. The generator/condenser includes a rupture disk, whichis sized to meet ANSI/ASHRAE B 15.

Optional Lithium BromideFilterThe filter system consists of the filterassembly and the associated piping andfilter-isolation valves needed foroperation and maintenance. The mainfilter body is stainless steel with aremovable, cleanable, stainless steelinternal 150-micron element. The filterisolation valves allow service of the filterassembly without disturbing theoperation of the rest of the machine.

Control PanelThe UCP2™ is a microprocessor-basedchiller control system that providescomplete stand-alone operation. It is afactory-mounted package, including afull complement of controls to safely andefficiently operate the absorption liquidchiller. The UCP2™ provides:• Chilled-water temperature control• Concentration control

System Features and Functions• User interface with a 40-character,

2-line display capable of displaying7 languages and SI or English units,and a 16 key keypad

• Passwords for protection of unit setupand configuration

• Chilled-water pump control• Absorber/condenser pump control• Automatic and manual control of

solution and refrigerant pumps• Economical solution-flow control of the

low-temperature solution pump andabsorber pump via an adjustable-frequency drive

• Anti-crystallization through dilutioncontrol

• Automatic and manual purge system• Chilled-water reset• Two-way valve assembly for hot-water

flow control or steam flow control• Concentration control• Steam adaptive flow control

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41ABS-PRC001-EN

MechanicalSpecifications

Adaptive Limits• Evaporator-water temperature limit• Low absorber/condenser limit• Soft-loading control

System Protection• Evaporator freeze protection• Chilled-water flow confirmation• Cooling-water flow confirmation• Emergency stop/shutdown• Under/over voltage detection

Monitor and Displays• Chilled-water temperature entering andleaving

• Absorber/condenser water temperatureentering and leaving

• Solution concentrations• Solution temperatures• Total pump current• Unit voltage• Chiller run-time and starts• Purge operation and run time• Alarm light• Diagnostic messages• Help screens• Evaporator-water flow (option)• Cooling-water flow (option)

Interfaces To UCP2™

• External machine manual-reset alarmindication output

• External machine auto-reset warningindication output

• External limit warning-indication output• Maximum capacity indication output• External auto-stop/emergencyshutdown

• Interface to Tracer Summit™

• External chilled-water setpoint• Tracer™ controlled relay• Printer interface

Contractor Responsibilities1. Install the unit on a level surface.

Neoprene isolation pads supplied bythe manufacturer shall be placedunder the unit.

2. Connect the unit control panel to alloperating external safety andauxiliary control devices. Coolingwater flow interlock is required.

3. Insure that piping adjacent to themachine does not restrict removal ofheaders for inspection, cleaning andremoving tubes.

4. Provide gauge cocks and optionalthermometer wells for temperatureand pressure readings at the inletand outlet of the evaporator, at theinlet and outlet of the absorber, andat the outlet of the condenser.

5. Provide balancing valves in allexternal water circuits to allowbalance and trim of the system.

6. Provide and install strainers ahead ofall pumps and automatic modulatingvalves to insure proper pump andvalve operation.

7. Insulate the chilled-water headersand other portions of the unit, aspointed out in the manufacturer’sinstallation literature, to preventcondensation on cold surfaces.

8. Provide and install a flow switch inthe chilled-water circuit, and interlockit with the starting control circuit ofthe unit. Proof of flow is requiredprior to permitting unit operation.Provide and install a flow switch inthe tower-water circuit, which shallbe interlocked with the startingcontrol circuit of the unit such thatproof of flow is required to preventmachine damage

9. Provide necessary distilled ordemineralized water for refrigerantcharge and trim charge.

10. Provide labor to charge the machinewith lithium bromide solution andrefrigerant water, and assist inmachine starting and calibration

under supervision of themanufacturer’s representative.

11. Provide an appropriately-sizedvacuum pump and personnel toevacuate the unit prior to charging (ifrequired).

12. Field assemble machines (if required)and leak test in accordance withinstructions in the manufacturer’sinstallation bulletin.

13. Connect the rupture disc to anappropriate floor drain or retentionchamber. The vent piping shall besupported and connected by aflexible connector to prevent stress atthe connection.

14. Install any control componentsprovided by the manufacturer forinstallation external to the machine.

15. Furnish and install, external to theunit control panel, a separately-fuseddisconnect switch, if not provided.

16. Install required power supply wiringto the control panel. Use copper wireonly.

Insulation RequiredInsulation is required on cold areas toprevent sweating. Insulation is availableas a factory provided, factory installedoption.

Insulation for cold insulation area shouldbe ¾-inch [19 mm] Armaflex orequivalent, and should be applied toevaporator waterboxes, refrigerantstorage tank, refrigerant pump andrefrigerant piping.

Cold insulation area on ABSD requires__________ per unit.

Cold insulation area for pipes onrequires __________ linear ft. of pipeinsulation.

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Standard/Non-Standard/DesignSpecial Options

Standard Features• Victaulic water connections• Variable-speed drives on solution

pumps• 50,000 hours design life solution

pumps• Corrosion resistant alloy tubes

Generator – .028 wall, 90/10 cupro-nickelEvaporator – .025 copperAbsorber 500-800 tonnages – .022” wall95/5 cupro-nickel975-1350 tonnages .028” wall copperCondenser – .028” wall copper

• Factory-mounted and-testedmicroprocessor controls

• 150 psig [10.3 bar] water boxes• Environmentally friendly inhibitor• Fixed and floating tube supports which

allow for expansion of tubes withoutproblems of high stress

• Designed, manufactured and tested forsuperior hermetic integrity

• Fully automatic purge

Options• Marine water boxes on the condenser

and absorber sections• Factory installed cooling-water

crossover pipe• Industrial duty factory mounted energy

valve• 150 psig [10.3 bar] raised face flanges

for the evaporator, condenser andabsorber water connections

• Major component disassembly in twopieces for installations that can benefitfrom the handling of smallercomponents.

• Lithium bromide filter• Stainless steel evaporator pan

Design Special OptionsIn addition to the options alreadyavailable, Trane’s design department isable to supply custom features for manyspecial requirements.

Examples are:• Factory provided, factory installed cold

insulation• Heavy wall tubes• 90/10 CuNi, stainless steel and titanium

tubes• 300 psig [20.7 bar] water boxes• NEMA 4 and 4X for additional chiller

protection against outdoor elements orwater impingement from variousdirections

• Alternate pass arrangements• Marine-style evaporator water boxes• Epoxy paint system for added

protection against outdoor elements orcorrosive environments such aschemical plants or salt water locations

• Custom color paints• Sacrificial anodes for use where

corrosive water is present• Gantries for “swing out” water box

covers for easy tube-cleaning capability• Custom control configurations• Specials for international code

compliance• Special packaging requirements• Options for using non-standard heat

sources• Hinged water box covers

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StandardConversionTable

Page 44: Trane Horizon Absorption Series · Operates With Energy-Saving, Low-Pressure Steam or Hot Water The Horizon family includes a single-stage, hot water- or steam-fired chiller line

Trane has a policy of continuous product and product data improvement and reserves the right to changedesign and specifications without notice.

Literature Order Number

File Number

Supersedes

To OrderTrane

A business of American Standard Companies

www.trane.com

For more information contact your local sales officeor e-mail us at [email protected]

ABS-PRC001-EN

PL-RF-ABS-000-PRC001-EN-0306

ABS-PRC001-EN 0604

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