Trane Horizon Absorption Series - SIGMA Equipment · PDF fileABS-PRC001-E4 Hybrid Chiller...

Trane Horizon®

Absorption Series

Single-Stage Hot Water or Steam-Fired Absorption Water Chillers500-1350 Tons

Built for Industrial and Commercial Applications

ABS-PRC001-E4November 2001

ABS-PRC001-E4

Hybrid Chiller Plant

A chiller plant design that allows theoperator to choose betweenmultiple energy sources is referredto as a hybrid design. Hybrid chillerplants are receiving increasingattention as valuable options forfacility owners. There are varioustypes of hybrid plant designs. Theyencompass different combinationsof electric chillers and other chillertypes, including gas or steamabsorption chillers. The advantagesof having a choice of energy sourceswill become even more viable as wemove further into the newmillennium.

Today we hear about utilityderegulation. For the first time,building owners can negotiatepower supply and natural gascontracts with their traditionalsupplier, as well as with newsuppliers in the market. The fuel-switching flexibility of the hybridplant puts the owner in a muchstronger negotiating position.Similarly, many electric utilities offerattractive off-peak or dual fuelelectric rates for applications whichare not operating during peakelectric system demand, mostcommonly in the summer months.This represents an opportunity forbuilding owners who can switch to agas or steam system.

Introduction

© 2001 American Standard Inc. All rights reserved.

ABS-PRC001-E4 3

Contents

Introduction

Features and BenefitsComponent Identification, Typical Single-Stage SteamIllustration, Refrigerant Cycle Overview

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

Selection ProcedureComputer Selection Procedure, Tube Fouling, ProductCoding Description

Performance DataCapacity/COP/Steam Rate/Flow Rate, Pressure DropTables, Capacity vs. Chilled Water SupplyTemperature, Energy Input vs. Capacity, PressureDrop 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/Non-Standard/

Design Special Options

Standard Conversion Table

Trane Horizon® AbsorptionSeries

Trane has led in absorption chillerdesign and manufacturing for fourconsecutive decades. In fact, Traneis the only North American chillermanufacturer to commercializedouble-effect absorption, over 25years ago. With over 10,000absorption chillers manufacturedand shipped, Trane serves thecommercial, industrial and processworldwide markets. Microelectroniccontrols, adaptive frequency drivesand smart purge systems havemodernized the technology, makingit more capable, more reliable and,in many applications, moreeconomical.

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 anoption.

• Custom design options available.

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

Technology You Can TrustIn the early 1990’s, with theassistance of the Gas ResearchInstitute, Trane began developing aninnovative series of absorptionchillers. In 1995, Horizon chillersbegan shipping from the Tranemanufacturing facility in La Crosse,Wisconsin. The Horizon chiller is soadvanced, it redefined industrystandards for absorption systemintegrity. Horizon chillerperformance, efficiency andreliability far exceed that of past andpresent absorption chillers.

Dynamic By DesignBecause uninterrupted chillerservice is critical to your operation,Horizon chillers are designed tomake chilled water reliably, even inthe harshest industrial application.Water-tower systems and loadrequirements can challenge thelong-term operation of manystandard-grade chillers. Theindustrial-grade construction of theHorizon chillers accounts for varyingload and water-temperaturechanges, as well as dirty towerwater. They are built with corrosive-resistant alloy metals, and precisionwelded in an ISO 9001 quality-certified facility. Only extended-lifepumps, valves and water boxes aremanufactured into their design. Forfurther dynamics, Horizon UCP2adaptive microprocessor controlsreact precisely to systemdiversification. Quality construction,long-life components and adaptivecontrols are what make the Horizondynamic by design.

Features andBenefits General

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Operates With Energy-Saving, Low-Pressure Steam or Hot WaterExpanded, the Horizon familyincludes a single-stage, hot water-or steam-fired chiller line. Able toproduce chilled water in the rangeof 40 to 60ºF (4.4 to15.6ºC), thesemachines use 12 psig (0.83 bar) low-grade steam or 270ºF (132ºC) hotwater.

Making chilled water from thesecomparatively low-temperatureinputs is particularly important forenergy conserving applications,such as waste-heat recovery, co-generation equipment and solar-energy-powered cooling.

Using refrigerant water helpseliminate refrigerant managementor availability concerns.Additionally, absorption technologyreduces the use of electric energy.


ABS-PRC001-E46

Sophisticated ReliabilityHorizon controls meet specificationsfor stand alone or hybrid chillercontrol. UCP2 adaptive controls arecritical to reliable operation. Tranecontrols are compatible withIntegrated Comfort™ Systems (ICS),and are easily integrated into theTracer® family of flexible chiller-plant system controllers with asingle twisted-pair communicationscable.

Ideal for Process and CommercialApplicationsWith Horizon chillers, theapplication possibilities for theabsorption machine are expanded.Capabilities such as lower towerflow, variable evaporator flow, lowerchilled-water temperatures andadvanced control capabilities makethe single-stage Horizon absorptionchiller ideal for both process andcomfort applications.

When Long-lived Reliability IsImportantTrane has been a long-timeproponent of the use of high-qualitymaterials in absorption chillerdesigns. The lithium bromidetemperatures and water refrigerant,typical of all absorbers, can morequickly corrode lower-grade metalsin the presence of air. Tranerecommends and uses industrial-grade materials to provide long-lived, reliable cooling.

A Global Network of AbsorptionExpertise When you specify a Trane Horizonchiller, you’re getting theknowledge, expertise and assistanceof a pool of experts that havedecades of absorption expertise.Making The Trane Company part ofyour management team gives youaccess to refrigeration, airconditioning and facility control-system applications specialists, anda unique breadth of innovativesolutions to satisfy your facilitiesneeds for today and tomorrow.

Standard Specification For Single-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-nickel975-1350 tonnages .028” wallcopper

— Condenser .028” wall copper

• Advanced cycle-managementsystem with Adaptive Frequency™

drive solution control • 150 psig (10.3 bar) evaporator,

absorber and condenser sections• Industrial-grade energy valve• Rigging eyes for easy installation• Advanced microprocessor control

system with adaptive controlfunctions

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

• Fixed and floating generator tubesupports prevent thermal stress

• Efficient stainless steel brazedplate solution heat exchanger

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

commissioned controls• Individually replaceable tubes• Removable absorber and

evaporator spray trees


ABS-PRC001-E4 7


Optional Specification For Single-Stage Horizon Chillers• 150 psig (10.3 bar) raised face

flanges for the evaporator,condenser, and absorber waterconnections

• Disassembled unit — easesdisassembly and reassembly ofmajor components at the job site

• Lithium bromide filter• Condenser and absorber marine

style water boxes• Factory installed cooling-water

crossover pipe absorber tocondenser

• Factory mounted energy valve• Choice of tube materials and other

chiller options• Stainless steel evaporator pan

Absorption Cooling — A SoundDecisionLife-cycle costing has become aprimary concern for chiller buyerswho have long-term investmentopportunity in mind. Changes in thedistribution and pricing of electricityhave made the absorption waterchiller a popular choice whenalternative energy use makes sense.Ask your local Trane representativefor a comprehensive analysis ofyour facility, and the energy-savingopportunities Trane offers for thedesign of Heating, Ventilating andAir Conditioning systems andcontrols.

ABS-PRC001-E48

Component Identification:1 = Fully-automatic purge system2 = Condenser section3 = Rigging eyes for easier

installation4 = Separable shell design5 = Vacuum pump6 = Solution pump variable-

frequency drive7 = Refrigerant storage tank8 = Long-life hermetic solution

pumps9 = UCP2™ microprocessor control

system

Features andBenefits

ComponentIdentification

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Component Identification:1 = Industrial-grade energy valve2 = ASME-rated generator3 = Fixed and floating tube supports

industrial-grade tubes4 = Evaporator spray tree5 = Lifting eyes on water box covers6 = Absorber section7 = Absorber spray tree8 = Efficient stainless-steel solution

heat exchanger9 = Evaporator section

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ABS-PRC001-E4 9

Horizon Single-StageAbsorption RefrigerationCycle

Refrigeration CycleThis is an example of typicalmachine operation at a standardrating point condition (i.e., 85°F(29.4°C) tower, 44°F (6.7°C) leavingchilled water) at full load. Dilutesolution has a relatively highrefrigerant content and low lithiumbromide content. An intermediatesolution is a mixture of dilute andconcentrated solutions. Aconcentrated solution is one with arelatively low refrigerant contentand high lithium bromide content.

Generator (1)Dilute solution is pumped into thegenerator, where it is boiled by thesteam or hot water in the tubebundle, creating refrigerant vapor.The refrigerant vapor flows to thecondenser (2). The now-concentrated solution flows bygravity, through the solution heatexchanger to the absorber spraysystem, where it is mixed with dilutesolution from the absorber andsprayed on the absorber tubebundle.

Figure Notes:1 – Solution 215ºF (102ºC), Vapor

207ºF (97ºC)2 – Refrigerant 100ºF (38ºC), Entering/

Leaving Cooling Water 94ºF/102ºF(34ºC/39ºC)

3 – Entering/Leaving System Water54ºF/44ºF (12ºC/7ºC), EvaporatorPump Refrigerant 41ºF (5ºC)

4 – Leaving Solution 107ºF (42ºC),Entering/Leaving Cooling Water85ºF/94ºF (29ºC/34ºC)

5 – Entering Solution 120ºF (49ºC)6 – Solution Heat Exchanger7 – Steam8 – Chilled Water9 – Refrigerant Storage

10 – Eductor11 – Cooling Water12 – Evaporator Spray Pump


RefrigerationCycle

Figure FB-1 – Single-Stage Absorption Refrigeration Cycle

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ABS-PRC001-E410


RefrigerationCycle

Condenser (2)Refrigerant vapor, produced by thegenerator, enters the condenser andchanges to a liquid throughcondensation. The heat ofcondensation is rejected to thecooling water inside the tubebundle.

Evaporator (3)The liquid refrigerant leaves thecondenser through a J tube, wherethe pressure/temperature is reducedthrough expansion for delivery tothe evaporator at 41°F (5°C). Systemwater runs through the tube bundlewhere its heat is transferred to therefrigerant, causing the refrigerantto vaporize/boil. The refrigerantvapor flows to the slightly lowerpressure in the absorber.

Absorber (4)Refrigerant vapor is absorbed by thelithium bromide solution. The now-dilute solution is pumped throughthe solution heat exchanger and onto the generator. The heat of vaporabsorption is rejected via thecooling water inside the tubebundle.

Absorption Process (5)Solution (concentrated) enters thespray system from the generatorand enters the spray system,wetting the tubes and providing aliquid surface for the refrigerantvapor (from the evaporator) toabsorb into the lithium bromidesolution. The solutiontemperature/concentration sprayedin the absorber controls theabsorber pressure, therebycontrolling the evaporatorrefrigerant temperature.

Solution Heat Exchanger (6)Solution flows through the heatexchanger to be preheated,reducing the heat energy required toinduce boiling within the generator,and to decrease the temperature ofthe solution being returned to theabsorber, thus decreasing the loadon the cooling tower.

ABS-PRC001-E4 11

GeneralThe Horizon single-stage steam-fired or hot water absorption chilleris designed to provide 40°F to 60°F(4.4°C to 15.6°C) chilled water, forcomfort or process coolingapplications, within all three marketsegments – commercial, industrialand institutional. They are most-often used where an economicanalysis of fuel costs versuselectrical rates indicates anoperating cost advantage.

In many process applications, theycan be utilized to convert excessheat energy to provide chilled waterfor process or comfort applications.

Operating LimitsTrane single-stage absorptionchillers operate with nominal 12psig (0.83 bar) steam or nominal270°F (132°C) hot water. In allapplications, superheat should belimited so steam temperature doesnot exceed 340°F (171°C).

Waterflows that are within the limitsindicated on the appropriateselection table will ensure tubewater velocities not exceeding 10feet per second (3.05 m/sec) incopper tubes and 11 feet per second(3.35 m/sec) in cupronickel tubes.Changes in condenser watertemperature should not exceed 1°Fper 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-stage steam absorption chiller willoperate under normal loadconditions at less than 85 dBAsound pressure level. Duringoperation 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 considered

when installing an absorptionchiller:

• 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

ApplicationConsiderations General

ABS-PRC001-E412

ApplicationConsiderations General

Cooling-Tower Water FlowThe ARI standard gpm/ton forsingle-stage absorption chillers is3.6, however, lower flow throughthe condenser and absorber sectionwill present an opportunity for asmaller tower, smaller piping, andsmaller condenser pump. For moreinformation on lower flows in thecooling tower water circuit, refer tothe appropriate Trane engineeringbulletin, available from your localTrane representative.

Water TreatmentThe use of untreated or improperlytreated water may result in scaling,erosion, and corrosion, algae orslime. It is recommended that theservices of a qualified water-treatment specialist be used todetermine what treatment, if any, isadvisable. The Trane Companyassumes no responsibility for theresults of untreated or improperlytreated water.

Combination SystemsPeak energy savings can beachieved when using a combinationof electric chillers and absorptionchillers for air conditioning loads.The absorption chiller is used toshave seasonal, billable peak-powerdemands during summer operation,and the electric chiller is run belowthe allowed demand limit, reducingcostly demand charges. Trane offersboth electric chillers and absorptionchillers with the unit control panel(UCP2) as standard. Although thechillers have different features andmodes of operation, the chillercontrol panel looks and acts thesame when used with any chillermodel. Each control panel isprogrammed to monitor theparticular chiller for which it wasdesigned, however, maintenanceand service personnel only need tobecome familiar with one controlpanel. Combined with a TraneTracer® system, a chiller plant hasalmost unlimited operationalflexibility, and all equipment issupplied from a single source.

Multiple Machine InstallationsThe Trane absorption machine canbe applied to series or parallelchilled-water flow, depending uponthe design requirement. Thearrangement that is best for anindividual system should be basedon an analysis of system water andtemperature rise requirements,system and machine pressure-dropcharacteristics, and installation cost.

Parallel flow allows minimumchilled-water pressure drop throughthe machines. However, with onemachine “off,” it is not usuallypossible to maintain the designchilled-water temperature unlessone machine is isolated with shutoff valves and the chilled-water flowdecreased.

Series flow permits design chilled-water temperature at light loadswith one machine “off.” However, atall operating conditions, the chilled-water pressure drop through themachine is high.

Accurate chilled-water temperaturescan be maintained on individualmachines between 100 percent and10 percent of nominal chiller load,which allows for a wide range ofcontrol options. Each chiller has astand-alone control system tomanage the desired watertemperature, and also the ability toreceive remote commands tosupport various system demandsfrom a control center. This versatilityof control makes the managementof more than one machine relativelyeasy.

ABS-PRC001-E4 13

Selection ProcedureAbsorption refrigeration machinesare usually selected to provide therequired refrigeration capacity withthe smallest practical machine ofsufficient size. Machine size is basedon chilled-water flow rates andtemperatures specified for the airside of the system.

Total air-conditioning system firstcost can be minimized by a carefulanalysis of system operatingparameters. The effect of flow ratesand temperatures, on both thebuilding air side and therefrigeration machine selections,should be investigated to determinewhich system represents the bestinvestment for the owner.

The information on the followingpages provides performance data, atARI standard conditions, forcapacity in tons, efficiency, flowrates and water pressure drops. Allcapacities are in accordance withthe expected ARI 560 Standardrevision, and are based on foulingfactors of .0001 for the evaporatorwaterside tubing and .00025 for theabsorber and condenser tubing

Standard Fouling Unit performance at non-standardfouling factors may vary fromstandard performance. Foulingfactors estimate the heat transferpenalty that coincides with the effectof typical fouling in evaporator andabsorber/condenser (cooling) watercircuits. All selections should usethe standard fouling factor to moreaccurately estimate the chillerperformance in an equipment roomand to comply with ARI 560.

ARI Standard Fouling FactorsEvaporator Condenser/Absorber

English Units – hour-ft2-F/Btu

0.0001 0.00025SI Units – m2-K/kW

0.018 0.044

Additional FoulingAny selection that uses a foulingfactor greater than 0.0001 for theevaporator tubes, and 0.00025 forthe condenser/absorber tubes, is amore conservative estimate thatshould only be used if there is anabnormal amount of foulingcontaminants in the water systems.The ARI 560 Standard defines“additional fouling” as “Conditionssuch as water hardness, organicmaterial, suspended solids and/orwater velocity may necessitate theuse of a greater field foulingallowance than that provided in theStandard Rating of equipment.” TheTrane single-stage Horizon Selectionprogram should be used todetermine the effect of nonstandardfouling factors. The followingguidelines can be used forestimation prior to the selection:

ARI Standard Fouling Factors ForAdditional Fouling

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

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

0.035 0.046

SelectionProcedure

ABS-PRC001-E414

Part Load Performance The Horizon® single-stageabsorption chiller exhibits excellentpart-load performancecharacteristics. Air conditioningsystem loads are usuallysignificantly less than full-loaddesign conditions. Therefore, theabsorption chiller operates at fullload a small percentage of the time.Part-load absorption chilleroperation is normally associatedwith reduced tower-watertemperatures. At part-loadoperation, the heat rejected to thecooling tower is less than at full-load operation. Also, part-loadoperation is typically associatedwith reduced outside wet-bulbtemperatures, resulting in improvedcooling tower performance. The netresult of less heat rejection andlower wet-bulb temperature iscooler tower water entering thechiller and improved unitperformance.

Final SelectionA final selection must be done bythe local Trane sales engineer usingthe Trane Horizon® Single-StageAbsorption Selection Program. Forapplications higher than 1600 feet(500 meters) above sea level, finalselection requires review byAbsorption Product Marketing. Priorto accessing the computer selectionprogram, the following data inputsshould be tabulated:• Temperature or pressure of the hot

water or steam• Two of the following three values

must be provided1:– Evaporator Delta-T– Evaporator Flow– Cooling Capacity

• Leaving-Evaporator WaterTemperature

• Entering-Absorber WaterTemperature

• Cooling Water Flow• Chilled water and tower water

fouling factors

Other options that may also beselected are: • Type and thickness of tube

material• Type of solution flowing through

the evaporator and tower loop2.

1 Any limitations or restrictionsshould also be given (i.e., pressuredrop, gpm etc.).

2 Absorption chillers can be selectedwith a wide variety of media otherthan water (evaporator andabsorber/condenser, or both). Formedia other than water, contactthe local Trane sales office forchiller selections and information.

SelectionProcedure

ABS-PRC001-E4 15

SelectionProcedure

Product CodingDescription

SelectionProduct Coding DescriptionThe coding block precisely identifies allcharacteristics of any Horizon® Single-Stage Steam-Fired or Hot WaterAbsorption Chiller.

Table S-1 — Product Coding DescriptionMODL 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 (includes ASME LTGN)

PURG Purge SystemAUTO Automatic Purge SystemLGTM Generator TubesSB04 .028 Wall 90-10 Cupro-Nickel

Smooth SurfaceSB05 .035 Wall 90-10 Cupro-Nickel


Smooth SurfaceSB16 .028 wall 409 Stainless Steel

Smooth SurfaceCDTM Condenser TubesSB09 .028 Wall Copper Smooth

Surface SB10 .035 Wall Copper Smooth

SurfaceSB04 .028 Wall 90-10 Cupro-Nickel



Smooth SurfaceSB17 .028w 316L Stainless Steel

Smooth SurfaceEVTM Evaporator TubesES12 .025 Wall Copper

Enhanced SurfaceES11 .025 Wall 90-10 Cupro-Nickel

Enhanced SurfaceES05 .035 Wall 90-10 Cupro-Nickel

Enhanced Surface

ABTM Absorber TubesSB00 .022 Wall 95-5 Cupro-Nickel







Smooth SurfaceSB09 .028 Wall Copper Smooth

SurfaceSB17 .028 Wall 316L SST Smooth

Surface

ABS-PRC001-E416

SelectionProcedure


GNWA LTGN - Generator Water BoxArrangement

GN02 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, 1000, 1100,1200 tons)

LELE In left-hand end – out left-handend (500 tons)

LERE In left-hand end – out left-handend (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 Solution

EVFT Evaporator Water Box Fluid TypeWTR WaterEGLY Ethylene Glycol SolutionPGLY Propylene Glycol SolutionEVLV Unit Energy ValveBF02 2-Way 3" 150# Wafer Btrfly BF03 2-Way 4" 150# Wafer Btrfly BF04 2-Way 6" 150# Wafer Btrfly BF05 2-Way 8" 150# Wafer Btrfly BF22 3-Way 3" 150# Flanged tee Wafer

Btrfly BF23 3-Way 4" 150# Flanged tee Wafer





Btrfly BF42 2-Way 3" 150# Flanged Btrfly BF43 2-Way 4" 150# Flanged Btrfly BF44 2-Way 6" 150# Flanged BtrflyBF45 2-Way 8" 150# Flanged Btrfly VB01 2-Way 2" 150# Wafer V-Ball VB02 2-Way 3" 150# Wafer V-Ball VB03 2-Way 4" 150# Wafer V-Ball VB11 2-Way 2" 300# Wafer V-Ball VB12 2-Way 3" 300# Wafer V-Ball VB13 2-Way 4" 300# Wafer V-Ball VB41 2-Way 2" 150# Flanged V-Ball VB42 2-Way 3" 150# Flanged V-Ball VB43 2-Way 4" 150# Flanged V-Ball

ABS-PRC001-E4 17

SelectionProcedure


EVIEVIN 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 DisassemblyELPP Electrical Protection PackageSELP Standard Electrical Package

PPCO 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 Module

AFDS Adjustable frequency driveYES Frequency driveFLSW Flow Switches1FS1 150 PSI NEMA 1 Flow Switch

- QTY of 11FS2 300 PSI NEMA 1 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

ABS-PRC001-E418

PerformanceData

Table PD-1 — Performance Data at ARI ConditionsEnglish Units*

Chilled Water Condenser/Absorber Water

ModelABSD500 571 0.71 17.71 1366 19.7 1800 27.4

ABSD600 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**

Chilled Water Condenser/Absorber Water

ModelABSD500 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

Capacity(Tons)

Coefficientof

Performance

SteamRate

(lbm/ton/hour)Flow Rate(gpm)***

Pressure Drop(foot Water)

Flow Rate(gpm)***

Pressure Drop(foot Water)

Capacity(kW)

Coefficientof

Performance

SteamRate

(kg/kW-hour)Flow Rate(m3/hour)

Flow Rate(m3/hour)

Pressure Drop(m wg)

Pressure Drop(m wg)

ABS-PRC001-E4 19

Figure PD-1 — ABSD 500-800 Capacity versus Chilled-Water Supply Temperature atVarious Cooling Water Supply Temperatures

PerformanceData

Perc

en

t C

ap

acit

y

Chilled-Water Supply Temperature (°C)

Chilled-Water Supply Temperature (°F)

Figure PD-2 — ABSD 975-1350 Capacity versus Chilled Water Supply Temperature atVarious Cooling-Water Supply Temperatures

Chilled Water Supply Temperature (°F)

Perc

en

t C

ap

acit

y

Chilled-Water Supply Temperature (°C)

75°F (24°C)

85°F (29°C)

95°F (35°C)

65°F (18°C)

75°F (24°C)85°F (29°C)

95°F (35°C)

65°F (18°C)

ABS-PRC001-E420

Figure PD-3 — ABSD 500-800 Part Load Performance - Energy Input vs. Capacity atVarious Cooling Water Supply Temperatures: Chilled Water Supply Temperature =44°F (7°C)

PerformanceData

Figure PD-4 — ABSD 975-1350 Part Load Performance - Energy Input vs. Capacity atVarious Cooling Water Supply Temperatures: Chilled Water Supply Temperature =44°F (7°C)

Perc

en

t E

nerg

y In

pu

tP

erc

en

t E

nerg

y In

pu

t

Percent Capacity

Percent Capacity

75°F (24°C)

85°F (29°C)

95°F (35°C)

65°F (18°C)

75°F (24°C)

85°F (29°C)

95°F (35°C)65°F (18°C)

ABS-PRC001-E4 21

PerformanceData

Figure PD-5 — ABSD 500-800 Pressure Drop vs. Chilled Water Flow Rate – English andSI Units

Chilled Water Flow Rate (L/s)

Pre

ssu

re D

rop

(fe

et

Wate

r)

Chilled Water Flow Rate (gpm)

Pre

ssu

re D

rop

(kP

a)

Figure PD-6 — ABSD 975-1350 Pressure Drop vs. Chilled Water Flow Rate – Englishand SI Units

Pre

ssu

re D

rop

(fe

et

Wate

r)

Pre

ssu

re D

rop

(kP

a)

Chilled Water Flow Rate (gpm)

Pressure Drop versusChilled Water Flow Rate

ABS-PRC001-E422

PerformanceData

Pressure Drop versusCooling Water Flow Rate

Figure PD-7 — ABSD 500-800 Pressure Drop vs. Cooling Water Flow Rate – English and SI Units

Cooling Water Flow Rate (L/s)

Pre

ssu

re D

rop

(fe

et

Wate

r)

Cooling Water Flow Rate (gpm)

Pre

ssu

re D

rop

(kP

a)

Figure PD-8 — ABSD 975-1350 Pressure Drop vs. Cooling Water Flow Rate – English and SI Units

Cooling Water Flow Rate (L/s)

Pre

ssu

re D

rop

(fe

et

Wate

r)

Cooling Water Flow Rate (gpm)

Pre

ssu

re D

rop

(kP

a)

ABS-PRC001-E4 23

Electrical DataFactory-wired and-mounted power control includes main power connections. Total kW includes solution andrefrigerant pump, motors, purge pump motor and control panel. Units may be supplied for operation on 230,460 or575 volt, 3-phase, 60-hertz power, or 190, 220, 380 or 415 volt, 3-phase, 50-hertz power.

Table ED-1 – Electrical Data 60 Hertz, 3-Phase

Model FLA MCA500 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

Model FLA MCA500 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

ElectricalData

SupplyVoltage

Total MotorHP

Total MotorkW

Control CircuitAmps

Maximum Fuse SizeAmps

SupplyVoltage

Total MotorHP

Total MotorkW

Control CircuitAmps

Maximum Fuse SizeAmps

ABS-PRC001-E424

ElectricalData

CAUTIONWARNINGHAZARDOUS VOLTAGE!

DISCONNECT ALL ELECTRIC POWERINCLUDING REMOTE DISCONNECTSBEFORE SERVICING.

FAILURE TO DISCONNECT POWERBEFORE SERVICING CAN CAUSE SEVERPERSONAL INJURY OR DEATH.

USE COPPER CONDUCTORSONLY!

UNIT TERMINALS ARE NOTDESIGNED TO ACCEPT OTHERTYPES OF CONDUCTORS.

FAILURE TO DO SO MAY CAUSEDAMAGE TO THE EQUIPMENT.

OPTIONALUNIT EXTERNAL AUTO TOP SWITCH WITH AUTO

RESET AFTER CLOSURE

OPTIONALUNIT EMERGENCY STOP SWITCH

REQUIRES MANUAL RESET AFTER RECLOSURE

OPTIONALOUTDOOR AIR TEMPERATURE SENSOR FOR AMBIENT-BASED CHILLED WATER RESET FURNISHED BY TRANE

FOR FIELD INSTALLATION WITH CHILLED WATER RESETOPTION

REQUIREDSUPPLY STEAM PRESSURE TRANSDUCER

FURNISHED BY TRANE FOR FIELD INSTALLATIONWITH FIELD MOUNTED STEAM UNIT ENERGY VALVE

OPTION

REQUIREDLOW TEMPERATURE GENERATOR STEAM PRESSURE

TRANSDUCER FURNISHED BY TRANE FOR FIELDINSTALLATION WITH FIELD MOUNTED STEAM UNIT

ENERGY VALVE OPTION

OPTIONALUNIT ENERGY VALVE MONITOR OUTPUT

2-10 VDCREQUIRES OPTIONS MODULE

OPTIONALTRACER TEMPERATURE SENSOR ORDERED WITH

TRACER PANEL REQUIRES OPTIONS MODULE ANDTRACER COMMUNICATION MODULE

OPTIONALEVAPORATOR EXTERNAL CHILLED WATER SETPOINT

INPUT2-10 VDC OR 4-20 MA

REQUIRES OPTIONS MODULE

OPTIONALBI-DIRECTIONAL COMMUNICATION LINK TO TRACER

PANEL, IF PRESENT REQUIRES TRACERCOMMUNICATION MODEL

OPTIONALBI-DIRECTIONAL COMMUNICATION LINK TO

ADDITIONAL UCP2 CONTROL PANEL(S) IF PRESENT

REQUIRES TRACER COMMUNICATION MODULE

OPTIONALCOMMUNICATION LINK TO PRINTER

IF PRESENT9-PIN SUB-D RS-232 CONNECTOR

REQUIRES PRINTER MODULE

REQUIREDCHILLED WATER FLOW SWITCH

REQUIREDCONDENSER-ABSORBER WATER FLOW SWITCH

REQUIRED - CONDENSER-ABSORBER WATER PUMPMOTOR STARTER

REQUIREDCHILLED WATER PUMP MOTOR STARTER

OPTIONALMACHINE AUTOMATIC RESET

ALARM STATUS RELAY

OPTIONALLIMIT WARNING STATUS RELAY

OPTIONALPURGE ALARM INDICATOR LIGHT REQUIRES

AUTOMATIC PURGE OPTION

RECOMMENDEDHOT WATER PUMP MOTOR STARTER

REQUIRES HOT WATER OPTION

REQUIREDUNIT ENERGY VALVE STEPPER

FURNISHED BY TRANE FOR FIELD INSTALLATIONWITH FIELD MOUNTED STEAM OR HOT WATER UNIT

ENERGY VALVE OPTION

OPTIONALHEAD RELIEF REQUEST STATUS RELAY


OPTIONALMAXIMUM CAPACITY STATUS RELAY


OPTIONALSOLUTION PUMP RUNNING STATUS RELAY

OPTIONALMACHINE MANUAL RESET

ALARM STATUS RELAY

OPTIONALTOWER TEMPERATURE LOW RELAY


OPTIONALTRACER CONTROLLED RELAY

REQUIRES OPTIONS MODULE AND TRACER COMMUNICATION MODULE

REFER TO NOTES AND DRAWINGS ON NEXT PAGE

Wiring

ABS-PRC001-E4 25

GENERAL NOTES:1. THIS DRAWING IS TO BE USED FOR THE PURPOSE OF ESTIMATING FIELD WIRING REQUIREMENTS. CHECK SALES ORDER TO DETERMINE WHICH OPTIONS

ARE SPECIFIED AND REFER TO FIELD CONNECTION WIRING DIAGRAM FOR ACTUAL FIELD WIRING REQUIRED. DASHED LINES INDICATE DEVICES AND FIELDWIRING SUPPLIED BY CUSTOMER.

2. ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE OR STATE AND LOCAL REQUIREMENTS WHICH APPLY. ALL CUSTOMERCONTROL CIRCUIT WIRING MUST HAVE A MINIMUM RATING OF 150 VOLTS.

3. DO NOT ROUTE LOW VOLTAGE (30 VDC MAXIMUM) WIRING IN THE SAME CONDUIT AS CONTROL VOLTAGE (115 VAC) WIRING AND DO NOT POWER-UPUNIT UNTIL CHECK-OUT AND START-UP PROCEDURES HAVE BEEN COMPLETED.

4. THE MAIN UNIT CONTROL PANEL PROVIDES A CONTACT CLOSURE TO CONTROL THE INDICATED CUSTOMER CONNECTED DEVICE. CUSTOMER TOPROVIDE 115 VAC POWER TO EACH DEVICE. MAXIMUM FUSE SIZE IS 15 AMPS.REQUIRED WIRING NOTES:

5. TRANE PROVIDES A TERMINAL BLOCK, FUSED OR NON-FUSED DISCONNECT SWITCH OR A CIRCUIT BREAKER IN THE MAIN UNIT CONTROL PANEL FORLINE VOLTAGE CONNECTION WHICH REQUIRES THE USE OF COPPER CONDUCTORS ONLY. CHECK SALES ORDERS TO DETERMINE WHICH OPTION ISSPECIFIED. WIRING SIZED PER NATIONAL ELECTRIC CODE BASED ON NAMEPLATE MINIMUM CIRCUIT AMPACITY RATING.

6. EVAPORATOR AND CONDENSER FLOW SWITCHES ARE TO BE INSTALLED AND WIRED TO THE MAIN UNIT CONTROL PANEL BY THE INSTALLINGCONTRACTOR. THE PURCHASE OF FLOW SWITCHES FROM TRANE IS OPTIONAL. EACH FLOW SWITCH CIRCUIT REQUIRES TWO WIRES, 115 VAC. MINIMUMCONTACT RATING AT 115 VAC IS 4.8 MA.

7. CHILLED AND CONDENSER-ABSORBER WATER FLOW MUST BE PROVEN PRIOR TO CHILLER OPERATION. CONDENSER-ABSORBER WATER PUMP MUST BECONTROLLED BY THE MAIN UNIT CONTROL PANEL FOR CHILLER SAFETY.

8. CIRCUIT REQUIRES TWO WIRES, 115 VAC. MAXIMUM MODULE CONTACT RATING AT 115 VAC OR 30 VDC IS 2.88 AMPS INDUCTIVE, 1/3 HP.OPTIONAL WIRING NOTES:

9. OPTIONAL CONTROL FOR A CUSTOMER SPECIFIED OR INSTALLED LATCHING TRIPOUT. THE CHILLER WILL RUN NORMALLY WHEN THE CONTACT ISCLOSED AND TRIP THE CHILLER OFF WITH A MANUALLY RESETTABLE DIAGNOSTIC WHEN THE CONTACT OPENS. MANUAL RESET IS ACCOMPLISHED WITHTHE DIAGNOSTIC KEY ON THE FRONT OF THE MAIN UNIT CONTROL PANEL. CUSTOMER SUPPLIED SILVER CONTACTS ARE REQUIRED FOR 24 VDC, 12 MARESISTIVE LOAD. CIRCUIT REQUIRES TWO WIRES, 30 VDC MAXIMUM. DO NOT ROUTE IN CONDUIT WITH HIGHER VOLTAGE CIRCUITS.

10. OPTIONAL CONTROL FOR CUSTOMER SPECIFIED OR INSTALLED REMOTE AUTO-STOP FUNCTION. THE CHILLER WILL RUN NORMALLY WHEN THECONTACT IS CLOSED AND STOP THE CHILLER WHEN THE CONTACT OPENS. RECLOSURE OF THE CONTACT WILL PERMIT THE CHILLER TO AUTOMATICALLYRETURN TO NORMAL OPERATION. CUSTOMER SUPPLIED SILVER CONTACTS ARE REQUIRED FOR 24 VDC, 12 MA RESISTIVE LOAD. CIRCUIT REQUIRES TWOWIRES, 30 VDC MAXIMUM. DO NOT ROUTE IN CONDUIT WITH HIGHER VOLTAGE CIRCUITS.

11. CIRCUIT REQUIRES TWO WIRES, 115 VAC. NORMALLY OPEN MAXIMUM MODULE CONTACT RATING AT 115 VAC OR 30 VDC IS 2.88 AMPS INDUCTIVE, 1/3 HP.12. CIRCUIT REQUIRES SHIELDED WIRE PAIR, 30 VDC, MAXIMUM. BELDON TYPE 8760 RECOMMENDED. MAXIMUM LENGTH OF 5000 FEET.13. TRANE PROVIDES STEAM PRESSURE TRANSDUCER SHIELDED CABLE ASSEMBLIES FOR FIELD INSTALLATION BY CUSTOMER.

ElectricalData Wiring

REQUIRED CHILLED WATER FLOW SWITCH

REQUIRED CONDENSER-ABSORBER WATERFLOW SWITCH

LINE VOLTAGE(SEE UNIT NAMEPLATE)

GENERATORINLET

REQUIRED STEAM ORHOT WATER UNITENERGY VALVE(FURNISHED BYTRANE - FIELD-INSTALLED

REQUIRED CHILLED WATER

PUMP EVAPORATORINLET

REQUIRED CONDENSER-ABSORBER

WATER PUMP

(Right Hand orLeft Hand)

INLET (Right Hand or

Left Hand)

ABSORBERTOWER WATER

115 VAC 15A PROVED BY CUSTOMER

LOW VOLTAGE (30 VDC MAXIMUM)

FRONT ELEVATION

MAINUNIT

CONTROLPANEL

ABS-PRC001-E426

ControlsData

Setting The StandardsTrane set the standard for unitmicroprocessor controls in 1985with the first generation of UnitControl Panel. Associated with thisstandard have been: • Proportional Integral Derivative

(PID) control strategies, whichprovide stable operation and highaccuracy for better performance,along with feed forward plus;

• Adaptive Control™ to keep thechiller “on line” and at the sametime keep the chiller away from amajor failure;

• Software based safeties that donot depend on electromechanicalhardware – hardware that meansquestionable reliability and addedcost;

• Operator interface that accesseschiller information and controladjustments at the front of thepanel.

UCP2™

UCP2 adds more flexibility, morereliability and better systemperformance than even our mostdemanding customers expect.

Flexibility Trane offers the ability to adapt tochanges easily and effectivelywithout adding prohibitive cost. Toprovide flexibility, the controllerresponds to a wide variety of needsfor: • System Designs, including

equipment, operating conditionsand controls variations that areeither existing or being consideredfor new installations.

Key to designing non-traditionalsystems is the ability to evaluatethe cost and reliability issues ofthese systems in comparison tothe more traditional systems.Trane recommends the use ofC.D.S. Network EquipmentEconomics, the Trane ApplicationsManuals and consultation with aTrane sales engineer for help inthis analysis.

• System Upgrades, including theability to accommodate changes inthe chilled-water system design orequipment room requirements, orto accommodate new technologiesthat become available.

• Modular structure of the UCP2makes it possible for the designerto select the system controls andassociated interfaces to Tracer® (orother building automationsystems) that are required for thechiller plant design. With thismodular concept, capability can beadded or upgraded at any time,with only temporary interruption ofchilled-water production.

• The operator can quickly programa Custom Report — so that onlywhat are considered to be the mostfrequently accessed/importantreports are available — at anytime, right at the front of the panel.

• With easy front panelprogrammability of Daily, ServiceStart-up and MachineConfiguration settings andsetpoints, the operator, servicemanand system designer cancustomize the use of the microcontroller to unique conditions ofthe chiller plant — whether thepurpose of chilled water is forcomfort cooling or for processcooling.

• All data that is necessary for thesafe operation and easyserviceability of the chiller isprovided as standard on allHorizon® absorption chillers.Options are available that provideadditional controls/data that arerequired for: an industrial/processsystem design, applicationsoutside of the typical chilled watersystem design, the need forredundant machine protection orthe desire for more systeminformation.

ABS-PRC001-E4 27

ControlsData

ReliabilityTo most people, reliability means“dependability — giving the sameresult on successive trials.” To ourcustomers, however, it has come tomean “keep chilled water flowing.”In other words, “when I turn theswitch on, cold water comes out.” Inorder to do this, the micro controllermust be aware of what is happeningin the system. But more importantly,it must be able to make decisionsand adjustments to keep the chillerrunning as long as possible, evenwhen non-standard conditions exist— conditions such as bad power,bad water (flow, temperature,fouling) or system componentfailure. Also, the Trane UCP2 panelcontinuously monitors fornoncondensables and purgesautomatically. • With Enhanced Adaptive Control™

the controller does everything itcan to avoid taking the chilleroffline.— Senses evaporator temperature

limit and high temperature limit— Displays a warning message

about the potentialcondition/safety trip

— Takes the following correctiveaction sequentially as thecondition worsens:- limits loading- prevents further loading- unloads until condition

improves- takes chiller offline

• With more diagnostics anddiagnostic history that aretime/date stamped and with helpmessages, the operator orserviceman can take faster andmore effective corrective action.

System Performance “Chilled Water System”encompasses many levels ofcontrol: Standalone Chiller, ChillerPlant, Applied System, CentralBuilding Automation System.However, regardless of the systemlevel being designed, the unitcontrols become critical, not just inmaking every level operate reliablybut also in facilitating optimalperformance. UCP2 provides morecapability and more intelligence tomake this operation/optimizationpossible.

Panel Features: The absorption chiller Unit ControlPanel (UCP2) incorporates thefollowing features and components:

Control Functions • Smart dilution-cycle duration

based on system requirements • Adaptive evaporator leaving-fluid

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

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

ABS-PRC001-E428

ControlsData

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 Points Chiller information is available atthe operator interface via a clearlanguage display. Access to theinformation is through fourdedicated report keys: Customer,Chiller, Cycle and Pump/Purge.

Customer Report User-defined custom report(operator may choose up to 20points from a list of over 100choices).

Chiller Report Status, fluid temperatures, andsetpoints: • Operating mode (i.e. run status) • Chilled-water setpoint • Evaporator entering/leaving water

temperatures • Absorber entering/leaving water

temperatures • Condenser leaving-water

temperature outdoor airtemperature

• Evaporator leaving-watertemperature

• Chilled-water reset

Cycle Report Refrigerant temperatures andpressures: • 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

ABS-PRC001-E4 29

ControlsData

Diagnostics The absorption chiller Unit ControlPanel (UCP2) provides over 70different diagnostics such as: • Water and refrigerant/solution

temperatures 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 other

modules • Motor abnormal

Operator Interface The Trane Horizon® steam-firedabsorption chiller control panel,UCP2, is easy to use, understand,access information, read, changesetpoints, diagnose problems,maintain, and to reset aftershutdown.

Convenience Enunciation of all information is atthe front panel display (includingpower, voltage, amps, purgepressures, and number of startsdata). Messages are displayed usingclear language.

Readability • Two-line, 40-character display that

is easy to read from within a 60-degree angle

• LCD backlight so that the displaycan be read in a variety ofequipment-room lighting

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

interface available

Ease of Use • Keypad programmability — no

manual switches or setpointpotentiometers

• Logically arranged report groupswith report header and setpointgroups

• Selectable security • Variable points updated every two

seconds • Messages that direct user to

problem source via a menu item

Trane ICS Compatibility The Trane absorption chiller controlpanel, UCP2, is 100 percentcompatible with the TraneIntegrated Comfort™ systems, ICS,UCP2 easily integrates into theTracer® family of flexible chiller-plant system controllers with asingle twisted-wire paircommunications cable.

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

ABS-PRC001-E430

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

This section provides the overall dimensions of the Horizon absorptionchiller. See unit submittal drawings for configured water nozzle connectiondimensions. A 500 Ton 2 pass absorber and condenser is illustrated. Allcatalog dimensional drawings are subject to change. Current submittaldrawings should be referred to for detailed dimensional information.Contact the local Trane sales office for submittal and template information.

Table DW-1 – Dimensional DataEnglish Units

Unit (1) (2) (3) (4) (5) (6)

500 13’-9½” 14’-5½” 1’-7 3/8” 17’-9¾” 14’-2 1/8” 8’-0 7/8”600 16’-5½” 17’-1½” 1’-8 7/8” 20’-7¼” 16’-10 1/8” 10’-8 7/8”700 19’-1 3/8” 19’-9½” 1’-8 7/8” 23’-3¼” 19’-6 1/8” 13’-11 1/8”800 21’-9 3/8” 22’-5½” 1’-8 7/8” 25’-11¼” 22’-2 1/8” 16’-10 7/8”

SI Units

Unit (1) (2) (3) (4) (5) (6)

500 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

PhysicalDimensions

LEFT END

Figure Notes:1 - Rupture Disc 2”(51mm) NPT2 - Baseline3 - Generator4 - Condenser5 - Evaporator6 - Absorber7 - Baseline

RIGHT END

Figure Notes:1 - Baseline2 - Baseline

ABS-PRC001-E4 31

Table DW-2 – English to SI Units Cross Reference

Conversion Chart (Feet 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" 19057' 4" 22357' 5 7/16" 22728' 6 1/16" 25939' 5 1/`16" 28869' 6 9/16" 2910


PhysicalDimensions

BACK

Figure Notes:1 - Baseline2 - Energy Valve with Actuator

Motor3 - Rupture Disk 2” (51mm) NPT4 - Purifier Purge5 - Generator/Condenser6 - Access Valve7 - Solution Pump Adjustable-

Frequency Drive8 - Evaporator/Absorber9 - Unit Control Panel

10 - Vacuum Pump11 - Vacuum Valve12 - Refrigerant Storage13 - 1 7/8” (48mm) Anchoring Holes14 - Refrigerant Solution Pump15 - Absorption Solution Pump

FRONT

ABS-PRC001-E432


PhysicalDimensions

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

This section provides the overall dimensions of the Horizon absorptionchiller. See unit submittal drawings for configured water nozzle connectiondimensions. All catalog dimensional drawings are subject to change.Current submittal drawings should be referred to for detailed dimensionalinformation. Contact the local Trane sales office for submittal and templateinformation.

Table DW-3 – Dimensional DataEnglish Units

Unit (1) (2) (4) (5) (6)

975 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 (1) (2) (4) (5) (6)

975 5372 5486 6604 5258 N/A1100 5982 6096 7214 5868 N/A1225 6591 6705 7823 6477 N/A1350 7201 7315 8433 7087 N/A

LEFT END

Figure Notes:1 - Rupture Disc 2”(51mm) NPT2 - Baseline3 - Generator4 - Condenser5 - Evaporator6 - Absorber7 - Baseline

RIGHT END

Figure Notes:1 - Baseline2 - Baseline

ABS-PRC001-E4 33


PhysicalDimensions

Table DW-4 – English to SI Units Cross Reference

Conversion Chart (Feet 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

Figure Notes:1 - Baseline2 - Rupture Disk 2” (51mm) NPT3 - Purifier Purge4 - Generator/Condenser5 - Access Valve6 - Solution Pump Adjustable-

Frequency Drive7 - Evaporator/Absorber8 - Unit Control Panel9 - Vacuum Pump

10 - Vacuum Valve11 - Refrigerant Storage Tank12 - 1 5/8” (48mm) Anchoring Holes13 - Refrigerant Solution Pump14 - Absorption Solution Pump15 - Low Temperature Solution

Pump16 - Baseline

BACK

Figure Notes:1 - Energy Valve with Actuator Motor2 - Baseline

FRONT

ABS-PRC001-E4

Separated Machine SectionsDisassembled machines can ship tothe job site in two main sections, theevaporator/ absorber as a sectionand the low temperature generator/condenser as a separate section.Contact the local Trane sales officefor current submittal information.

Figure DW-1 – Disassembly Options – Right-End View

Table DW-5 – Disassembly and Center of Gravity DimensionsUnit Size 500 600 700 800 975 1100 1225 1350

English Units

(1) 5’ 11¼” 5’ 11¼” 5’ 11¼” 5’ 11¼” N/A N/A N/A N/A(2) 3’ 5 5/8” 3’ 5 5/8” 3’ 5 5/8” 3’ 5 5/8” 3'-11 1/4" 3'-11 1/4" 3'-11 1/4" 3'-11 1/4"(3) 3’ 9 3/8” 3’ 10” 3’ 10 1/8” 3’ 10 3/8” 4'-8 3/4" 4'-8 3/4" 4'-8 3/4" 4'-8 3/4"(4) 7’ 3” 7’ 3” 7’ 3” 7’ 3” 8'-2 5/8" 8'-2 5/8" 8'-2 5/8" 8'-2 5/8"(5) 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"(6) 6’ 0 3/8” 6’ 0 3/8” 6’ 0 3/8” 6’ 0 3/8” 7'-7" 7'-7" 7'-7" 7'-7"(7) 2’ 9” 2’ 9” 2’ 9” 2’ 9” 3'-8 1/2" 3'-8 1/2" 3'-8 1/2" 3'-8 1/2"(8) 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"(9) 6’ 7 7/8” 6’ 7 7/8” 6’ 7 7/8” 6’ 7 7/8” 8'-2 3/8" 8'-2 3/8" 8'-2 3/8" 8'-2 3/8"

SI Units (mm)

(1) 1810 1810 1810 1810 N/A N/A N/A N/A(2) 1057 1057 1057 1057 1200 1200 1200 1200(3) 1153 1168 1172 1178 1441 1441 1441 1441(4) 2210 2210 2210 2210 2505 2505 2505 2505(5) 981 981 981 981 1280 1280 1280 1280(6) 1838 1838 1838 1838 2311 2311 2311 2311(7) 838 838 838 838 1130 1132 1133 1131(8) 470 470 470 470 619 619 619 619(9) 2029 2029 2029 2029 2499 2499 2499 2499

34


DisassemblyOptions

(2)

(1)

(3)

(4)

(5)

(8)

(7)

(6)

4

3

2

1

Figure Notes:1 - Condenser2 - Generator3 - Evaporator4 - Absorber

ABS-PRC001-E4 35

Foundation SupportThe foundation must be level,smooth, and capable of supportingthe machine weight. The machinelegs should be positioned overisolation pads. A housekeeping pador support rail is recommended toelevate the machine formaintenance. Any foundation padshould provide adequate structuralsupport and keep the installedmachine level within 1/16-inch (1.6mm) by length and width for reliableoperation. Leveling marks on theevaporator and absorber tube sheetcan be used to check the machineafter it is positioned on the pad.

Chiller Isolation Isolation pads are provided witheach unit. The purpose of theisolation pad is to distribute themachine weight and minimizesound and vibration transmissionthrough the building structure.

Figure DW-2 – Typical Machine Rigging Points

Figure DW-3 – Unit Anchoring Detail – All Sizes

Dimensionsand Weights Rigging

12

3

4

Figure DW-2 Notes:1 - Cables2 - 45 Degree Minimum3 - Unit Lift Point Ø 2” (51mm) Holes (Both Ends)4 - Front

1

2

3

4

5

Figure DW-3 Notes:1 - Unit Base2 - 3/4” (19mm) Anchor Bolt3 - Nut(s) and Washer(s) To Suit4 - 5/16” (8mm) Thick Isolation Pad5 - Housekeeping Pad

ABS-PRC001-E4

Figure DW-4 – Service Clearances

36


ServiceClearances

Figure DW-4 Notes:1 - The tube-pull clearance area for evaporator/absorber and generator/condenser may be on the left end of the unit,

as shown, or on the right end. To facilitate removal of spray trees (if required), recommend clearance on left end.2 - Minimum recommended space envelope.3 - 4X Ø1 5/8” (41mm) anchoring holes.4 - Unit outline - front of unit

ABS-PRC001-E4 37

Rigging and Service ClearancesService clearance is required on allsides of the machine. Pay particularattention to the control panel doorclearance and the clearance at oneend for tube service.

Figure DW-4 and Table DW-6illustrate the recommendedclearances for normal service andtube replacement. When sufficientoverhead clearance exists, werecommend placing a 6-8 inch (150-200 mm) extension underneath themachine legs for additional accessunder the chiller.

Overhead lift is the recommendedmethod when moving a machine.Before lifting the machine,determine the approximate locationof the center of gravity.

Table DW-6 – Service Clearances English Units

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 0' - 5 3/8" 0' - 5 3/8" 0' - 5 3/8" 0' - 5 3/8" 0' - 8" 0' - 8" 0' - 8" 0' - 8"F 0' - 10 3/4" 0' - 10 3/4" 0' - 10 3/4" 0' - 10 3/4" 1' - 4" 1' - 4" 1' - 4" 1' - 4"G 0' - 10 1/2" 0' - 10 1/2" 0' - 10 1/2" 0' - 10 1/2" 0' - 10" 0' - 10" 0' - 10" 0' - 10"H 3' 3' 3' 3' 4' - 4" 4' - 4" 4' - 4" 4' - 4"J 4' - 9" 4' - 9" 4' - 9" 4' - 9" 6' - 0" 6' - 0" 6' - 0" 6' - 0"K 5' - 3" 5' - 3" 5' - 3" 5' - 3" 5' - 3 1/2" 5' - 3 1/2" 5' - 3 1/2" 5' - 3 1/2"L 13' - 9" 13' - 9" 13' - 9" 13' - 9" 15' - 2 3/8" 15' - 2 3/8" 15' - 2 3/8" 15' - 2 3/8"M 8' - 6" 8' - 6" 8' - 6" 8' - 6" 9' - 10 7/8" 9' - 10 7/8" 9' - 10 7/8" 9' - 10 7/8"N 4' - 1" 4' - 1" 4' - 1" 4' - 1" 5' - 4 1/4" 5' - 4 1/4" 5' - 4 1/4" 5' - 4 1/4"P 5' - 7" 5' - 7" 5' - 7" 5' - 7" 5' - 7 3/8" 5' - 7 3/8" 5' - 7 3/8" 5' - 7 3/8"

SI Units (mm)

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 137 137 137 137 203 203 203 203F 273 273 273 273 406 406 406 406G 267 267 267 267 254 254 254 254H 914 914 914 914 1321 1321 1321 1321J 1448 1448 1448 1448 1829 1829 1829 1829K 1600 1600 1600 1600 1613 1613 1613 1613L 4191 4191 4191 4191 4632 4632 4632 4632M 2591 2591 2591 2591 3019 3019 3019 3019N 1243 1243 1243 1243 1626 1626 1626 1626P 1702 1702 1702 1702 1711 1711 1711 1711


ServiceClearances

UnitSize

UnitSize

ABS-PRC001-E438

Low Temperature Insulation (ColdInsulation Type)Cold insulation can be ordered as afactory-installed option. Thequantity and the areas to becovered are illustrated in Table DW-7 and Figure DW-5.

Table DW-7 – Cold Insulation Area and LengthEnglish Units

2" Pipe 4.50" Pipe500T 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. ft

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

2" Pipe 4.50" Pipe500T 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.

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

1100T15.94 sq. m.1225T17.55 sq. m.1350T19.16 sq. m.


ColdInsulation

Figure DW-5 – Cold Insulation

Refrigerant StorageTank Circuit

EvaporatorShell

Tubesheets andWater Boxes


EvaporatorShell



EvaporatorShell



EvaporatorShell


ABS-PRC001-E4 39


Weights andConnection Sizes

Table DW-8 — Weights and Connection SizesEnglish Units

Weights Connection Sizes Unit Charging

ModelABSD 500 22900 31800 8 8 3620 150ABSD 600 25500 35700 8 8 4040 190ABSD 700 28000 40100 10 10 4620 230ABSD 800 30600 44200 10 10 5140 270ABSD 975 36305 49910 12 12 5080 162ABSD 1100 38769 53487 12 12 5499 179ABSD 1225 41450 57262 12 12 5880 197ABSD 1350 43941 60776 12 12 6215 213

SI Units

Weights Connection Sizes Unit Charging

ModelABSD 500 10400 14400 203 203 1642 568ABSD 600 11500 16200 203 203 1833 719ABSD 700 12700 18200 254 254 2096 871ABSD 800 13900 20100 254 254 2331 1022ABSD 975 16468 22639 305 305 2304 613ABSD 1100 17585 24262 305 305 2494 679ABSD 1225 18802 25974 305 305 2667 745ABSD 1350 19931 27568 305 305 2819 805

Shipping(lbm)

Operating(lbm)

Evaporator(Inch)

Condenser/Absorber(Inch)

54.7% Brine(lbm)

Refrigerant(Gallon)

Shipping(kg)

Operating(kg)

Evaporator(mm)

Condenser/Absorber(mm)

54.7% Brine(kg)

Refrigerant(l)

ABS-PRC001-E440

Table JC-1 – Steam Supply and Condensate Return Piping ResponsibilitiesMaterial Provided By Installed By

Item Trane Other Trane OtherEnergy Valve X X

X X

Rupture Disk Assembly X XRupture Disk Piping X X

Steam Supply Figure JC-1 illustrates a typicalsteam-supply piping illustration thatincludes the appropriate hardware.

The steam supply piping should bedesigned in accordance with gooddesign practice, providing strainers,unions and gate valves for ease ofoperation and maintenance. Aproperly sized steam-modulatingvalve, based on design flow andpressure drop requirements, isprovided by The Trane Company.

A hand valve in the steam supplypiping is recommended when themachine will be out of operation foran extended period. The modulatingsteam valve may experience a smallamount of leakage duringshutdown. This leakage may resultin heating of the equipment roomunless the machine is properlyisolated with a hand valve.

In all applications, it isrecommended that the steamsupply pressure to the control valveinlet not exceed design to ensurethat the valve closes properly. Ifsteam supply pressures exceeddesign, a pressure reducing stationshould be used to control the steampressure to the valve.

The unit control has adjustablefeatures that minimize steam drawon start-up. The adjustable steam-control feature allows the user toadapt the machine to the availablesteam source capability.

Figure JC-1 – Typical Steam Supply Piping

Job SiteConnections

Steam Supply andCondensate Piping

Low- and High-Pressure Steam Piping

Figure JC-1 Notes:1 - Vacuum Breaker2 - Check Valve3 - Quick Vent4 - Optional Vacuum Breaker System5 - Vacuum Breaker (Equalizer Line)6 - Vent7 - Condensate Receiver8 - To Boiler9 - Condensate Pump10 - Subcooler (Optional)11 - Circuit for High-Pressure Steam12 - Relief Valve (Vent to Atmosphere)

13 - Pressure Reducing Valve14 - Low-Pressure Supply15 - Rupture Disk16 - Check Valve17 - Float and Trap18 - Gate Valve19 - Pressure Gauge20 - Energy Valve (Detail “A”)21 - Union22 - Strainer Gate Valve23 - Float and Trap24 - Drip Leg

T-Type Strainer, Flanged connections, gate valve,drip leg w/dirt pocket, float and thermostatic trap,pressure gauge vent and valve, pressure reducingvalve, pressure gauge, relief valve check valve,connecting piping

ABS-PRC001-E4 41

A subcooler may be installed aheadof the receiver to cool thecondensate to a temperature belowthe saturation temperature atatmospheric pressure, thuseliminating flashing entirely. It isrecommended that a coolingmedium, such as boiler feed water,be used to keep this energy withinthe system. The pressure dropthrough the subcooler should beminimized.

Figure JC-1 indicates an equalizerline installed to avoid condensatebackup in the machine. The swingcheck opens if a vacuum developswithin the tube bundle under part-load operation.

This prevents development of alower pressure in the concentratorthan at the outlet of the trap.

Packaged Condensate SystemsSeveral manufacturers haveavailable packaged condensate-pump systems, designed forvarious condensate temperatures. Adecision regarding the use of thesesystems with a Trane absorptionmachine should be based on athorough economic analysis of theparticular installation. The followingfactors should be considered:

1. Condensate may flash in thereceiver less than 20 percent ofthe total operating time in atypical installation. The amount ofcondensate that may flash variesfrom a maximum of three percentat full load, to none at less than70 percent load. A subcooler canbe used to eliminate the smallamount of flashing that mayoccur when the machine isoperating under heavy load.

2. The condensate system mustprevent condensate from backingup into the machine at part loadwhen the pressure in thegenerator tube bundle is belowatmospheric pressure.

3. The condensate system must notdraw supply steam through themachine. This reduces themachine efficiency and mayoffset any potential energysavings that might otherwise berealized by the use of thecondensate return system. Also,reduced tube life would resultdue to erosion.

If the decision is made to use apackaged condensate-pumpsystem, follow the manufacturer’srecommendations regarding itsapplication.

Job SiteConnections

Steam Supply andCondensate Piping

Condensate HandlingFigure JC-1 illustrates a typicalcondensate system consisting ofsteam traps, condensate receiversand condensate pumps. Suchsystems provide the mosteconomical method for returningcondensate to a boiler. Properly-sized float and thermostatic trapsare required for proper operation.The use of bucket traps is notrecommended.

Trane absorption machines usesteam-throttling control. Amaximum of three percent of thecondensate may flash to a ventedreceiver at full load. This flashingdecreases as the load decreases,and is virtually nonexistent below70 percent load. When the machineis operating at less than 70 percentload, the pressure in the generatortube bundle may be belowatmospheric pressure. Thetemperature of the condensateleaving the machine under theseconditions is less than 212°F(100°C), so flashing does not occur.

ABS-PRC001-E442

Hot Water PipingThe hot water system must bedesigned such that it will avoidfluctuations in the pressuredifferences across the control valve.Trane absorption chillers for usewith hot water may be used at anentering hot-water temperature of270°F (132°C) or below. Piping for atypical hot water installation using atemperature of 270°F (132°C) or lessis shown in Figure JC-2. In thisarrangement, a three-way energyvalve is used to control capacity byvarying 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 canalso be used where the return andsupply flow rates can vary. Thegenerator design is rated to 150 psig(10.3 bars) with a 400 psig (27.6bars) optional design available.

When the supply-water temperatureexceeds 270°F (132°C), a separatecirculating pump is recommendedin a run-around loop as shown inFigure JC-4. The hot water for theabsorption machine should be takenfrom a header installed between thehot-water supply and return mains.The flow of hot water through themachine is held constant, but thetemperature of the circulating water

Figure JC-2– Hot Water Supply Piping – 270ºF and Below with 3-Way Energy Valve

Job SiteConnections

Hot WaterPiping

1

2

3

4

5

67

8 9

10

11 12

Hot Water Piping, 270ºF (132ºC) and BelowVariable Flow Through Generator

Figure JC-2 Notes:1 - Medium Temperature Supply2 - Gate Valve3 - Return4 - Alternate 3-Way Energy Valve5 - Balancing Valve6 - Strainer

7 - Rupture Disk8 - Union9 - Pressure Gauge10 - Thermometer11 - To Drain12 - To Floor Drain

Figure JC-3 – Hot Water Supply Piping – 270ºF and Below with 2-Way Energy Valve

1

2

3

4

5

6

78

9

10 11

Hot Water Piping, 270ºF (132ºC) and BelowVariable Flow Through Generator

Figure JC-3 Notes:1 - Medium Temperature Supply2 - Gate Valve3 - Return4 - Rupture Disk5 - Standard 2-Way Energy Valve6 - Strainer

7 - Pressure Gauge8 - Union9 - Thermometer10 - To Drain11 - To Floor Drain

ABS-PRC001-E4 43

Figure JC-4 – Hot Water Supply Piping Above 270ºF

Table JC-2 – Hot Water Supply Piping ResponsibilitiesMaterial Provided By Installed By

Item Trane Other Trane OtherEnergy Valve (2-Way/3-Way) X X

X X

Rupture Disk Assembly X XRupture Disk Piping X X

Job SiteConnections

Hot WaterPiping

1

2

3

4

5

6 78

910

11

12 13

Hot Water Piping, 270ºF (132ºC) Constant Flow Through Generator

Figure JC-4 Notes:1 - Hot Water Supply Main2 - Hot Water Return Main3 - Standard 2-Way Energy Valve4 - Strainer5 - Rupture Disk6 - Gate Valve7 - Pump

18 - Globe Valve19 - Pressure Gauge10 - Union11 - Thermometer12 - To Drain13 - To Floor Drain

Recommended Method for All Installations

Gate valve, balance valve, Y-type strainer w/valve,bypass circuit, check valve, thermometer, pressuregauge, vent shutoff valve, union or flanged connectioncirculating pump

is varied to meet load requirementsby modulating the amount of high-temperature supply water added tothe loop. This is done by installing atwo-way modulating valve at theloop outlet. The valve responds tothe chilled-water temperatures, butlimits the water temperatureentering the machine to a maximumof 270°F (132°C).

Hot Water ValvesTrane provides hot-watertemperature-control valves with themachine for installation by thecontractor at the job site. Thesevalves are selected by The Tranecompany based on data providedby the contractor (*i.e. water flow tobe used and the design pressure-drop across the valve.)

It is desirable to use the smallestvalve, with the highest pressuredrop, appropriate to the designwater flow and allowable pressuredrop in the system. The smaller thevalve, the better the control.

ABS-PRC001-E444

Cooling Water PipingThe cooling water piping design forthe Horizon series of absorptionchillers differs from conventionalreciprocating or centrifugal systems,in that cooling water passes throughthe absorber section of the machineprior to entering the condenser.

The Horizon Single Stageabsorption chiller is designed tostart and operate with cooling-watertemperatures as low as 55°F(12.8°C). In typical applications, themachine is selected on the basis ofthe cooling-water temperature thatwill be available at full-load and atthe design outside conditions. In airconditioning applications utilizing acooling tower, this is 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 incooling load or outside wet-bulbtemperature. The lower cooling-water temperature would normallytend to increase the capacitypotential of the unit. In the Tranedesign, the UCP2 adaptive controlswill limit the energy input of themachine based on the enteringcooling water temperature, therebypreventing overfiring of themachine.

Figure JC-5 – Cooling-Water Piping with Cooling Tower

Figure JC-6 – Cooling-Water Piping, Three-Way Mixing Valve

Job SiteConnections

Cooling WaterPiping

12 3

4 5

6 7

8

9

10

Cooling-Tower Piping with Cooling-Water Temperature Control

Figure JC-5 Notes:1 - Pressure Gauge2 - Flow Switch (Required)3 - Balancing Valve4 - Thermometer5 - Gate Valve

16 - Union17 - Gate Valve18 - Variable-Frequency Drive Fan19 - Cooling Tower10 - Pump

1 2 3

4 5

6 7

89

10

11

12

Cooling-Tower Piping with 3-Way Mixing ValveRecommended For Lower Tower Temperatures

Figure JC-6 Notes:1 - Pressure Gauge2 - Flow Switch (Required)3 - Balancing Valve4 - Thermometer5 - Gate Valve6 - Union

17 - Gate Valve18 - Balancing Valve19 - Pump10 - Strainer11 - Cooling Tower12 - Cooling-Tower Bypass Valve

(Recommended)

ABS-PRC001-E4 45

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 X

X or X orFlow Switch X X

X X

Job SiteConnections

Cooling WaterPiping

12 3

4

5 6 7 8

9

Piping for Well or River Water

Figure JC-7 Notes:1 - Pressure Gauge2 - Flow Switch (Required)3 - Balancing Valve4 - Gate Valve5 - Union

6 - Gate Valve7 - Pump8 - Strainer9 - 2-Way Valve

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

(factoryinstalled option)

(optional)X or

(factory installedoption)

In typical air-conditioningapplications, precise cooling-watertemperature control is not required.In process applications, however,where extremely close control ofleaving chilled-water is required, itis recommended that a tower valvebe used to maintain cooling-watertemperature at a specifiedtemperature. Constant cooling-water temperature allows the unitcontrol valve to more preciselycontrol leaving chilled-watertemperature. Also, in applicationswhere well water or other coolingwater will be available at atemperature below 65°F (18.3°C), acontrol valve is recommended tomaintain the temperature at 65°F(18.3°C) or above. Changes incondenser water temperatureshould not exceed 1°F per minute inthe range of 75°F to 95°F (23.9 to35°C).

Figure JC-5 illustrates a typical air-conditioning installation without acooling-tower control valve. FigureJC-6 illustrates typical cooling-waterpiping in applications where a three-way valve may be required. FigureJC-7 illustrates typical cooling-waterpiping utilizing well or river water.

ABS-PRC001-E446

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 energy control valve. All unitsare of hermetic design, factory-assembled and-leak-tested prior toshipment. Units can be separatedand shipped disassembled forrigging purposes. Unit controls arefactory mounted and wired,including microelectronic controlpanel, sensors and purge system.An energy valve can be factorymounted and wired as an option onsteam-fired units. The unit ispainted prior to shipping with twocoats of a water-base air-dry primer.Standard method of shipment is bytruck.

Generator/Condenser-Evaporator/AbsorberThe shell material is carbon steel.The standard generator tubematerial is cupro-nickel, theevaporator is copper, absorber iscupro-nickel or copper and thecondenser is copper. Tubes aremechanically rolled into the tubesheets and are replaceable fromeither end. The condenser,evaporator and absorber tubesupports are fixed. The generatorconsists of fixed and floating tubesupports to allow for even tubeexpansion. Solution spray systemsare replaceable from one end of theunit without sacrificing the hermeticintegrity of the unit.

Design working pressure for thewater boxes is 150 psig (10.3 bars).All tube bundles are tested at 150percent of design working pressure.All water boxes have gasketed,removable covers for access.Optional marine-type water boxescan be provided on the condenserand absorber. Water connectionsare provided with either victaulic orraised-face flanged connections.

Heat ExchangersA brazed-plate solution heatexchanger is provided to reduceenergy use and improve unitperformance. Heat exchangersurfaces are 300 series stainlesssteel.

PumpsSolution and refrigerant arecirculated by means of threehermetic, single-stage centrifugalpumps. The pump impellers are castiron, with a steel shaft supported bytwo tapered carbon bearings. Thebearings are lubricated and themotor is cooled via the pumpedfluid. Adjustable-frequency drivesare provided on the generator pumpand absorber pump to providesolution flow control.

Automatic Purge SystemThe purge system utilizes aneductor for movingnoncondensables to the condenser,Purifier™ Purge to collect thenoncondensables in an externalstorage tank, and a vacuum pumpfor removal of thenoncondensables. The purgeoperates automatically to removenoncondensables from the unitduring periods of chiller operationand shutdown. Logging of purgeinformation is provided via the unitcontrol panel.

GeneratorThe shell is carbon steel. Tubesheets are steel and standardgenerator tubes are constructed ofcopper nickel. The generator hasfixed and floating tube supports toallow for even tube expansion. Thesteam side of the generator isdesigned and stamped for 50 psiASME construction. For hot wateras the energy source, the generatoris ASME designed and stamped for150 or 400 psi (10.3 or 27.6 bars).The generator/condenser includes arupture disk, which is sized to meetANSI/ASHRAE B 15.

ABS-PRC001-E4 47

Optional Lithium BromideFilterThe filter system consists of thefilter assembly and the associatedpiping and filter-isolation valvesneeded for operation andmaintenance. The main filter body isstainless steel with a removable,cleanable, stainless steel internal150-micron element. The filterisolation valves allow service of thefilter assembly without disturbingthe operation of the rest of themachine.

Control PanelThe UCP2™ is a microprocessor-based chiller control system thatprovides complete stand-aloneoperation. It is a factory-mountedpackage, including a fullcomplement of controls to safelyand efficiently operate theabsorption liquid chiller. 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 Englishunits, and a 16 key keypad

• Passwords for protection of unitsetup and 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 solutionpump and absorber pump via anadjustable-frequency drive

• Anti-crystallization through dilutioncontrol

• Automatic and manual purgesystem

• Chilled-water reset• Two-way valve assembly for hot-

water flow control or steam flowcontrol

• Concentration control• Steam adaptive flow control

ABS-PRC001-E448

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

and leaving• Absorber/condenser water

temperature entering 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-resetalarm indication output

• External machine auto-resetwarning indication output

• External limit warning-indicationoutput

• Maximum capacity indicationoutput

• External auto-stop/emergencyshutdown

• Interface to Tracer Summit™

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

Contractor Responsibilities

1. Install the unit on a level surface.Neoprene isolation padssupplied by the manufacturershall be placed under the unit.

2. Connect the unit control panel toall operating external safety andauxiliary control devices.

3. Insure that piping adjacent to themachine does not restrictremoval of headers forinspection, cleaning andremoving tubes.

4. Provide gauge cocks and optionalthermometer wells fortemperature and pressurereadings at the inlet and outlet ofthe evaporator, at the inlet andoutlet of the absorber, and at theoutlet of the condenser.

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

6. Provide and install strainersahead of all pumps andautomatic modulating valves toinsure proper pump and valveoperation.

7. Insulate the chilled-water headersand other portions of the unit, aspointed out in themanufacturer’s installationliterature, to preventcondensation on cold surfaces.

8. Provide and install a flow switchin the chilled-water circuit, andinterlock it with the startingcontrol circuit of the unit. Proofof flow is required prior topermitting unit operation.Provide and install a flow switchin the tower-water circuit, whichshall be interlocked with thestarting control circuit of the unitsuch that proof of flow isrequired to prevent machinedamage.


ABS-PRC001-E4 49


9. Provide necessary distilled ordemineralized water forrefrigerant charge and trimcharge.

10. Provide labor to charge themachine with lithium bromidesolution and refrigerant water,and assist in machine startingand calibration undersupervision of themanufacturer’s representative.

11. Provide an appropriately-sizedvacuum pump and personnel toevacuate the unit prior tocharging (if required).

12. Field assemble machines (ifrequired) and leak test inaccordance with instructions inthe manufacturer’s installationbulletin.

13. Connect the rupture disc to anappropriate floor drain orretention chamber. The ventpiping shall be supported andconnected by a flexibleconnector to prevent stress atthe connection.

14. Install any control componentsprovided by the manufacturerfor installation external to themachine.

15. Furnish and install, external tothe unit control panel, aseparately-fused disconnectswitch, if not provided.

16. Install required power supplywiring to the control panel. Usecopper wire only.

Insulation RequiredInsulation is required on cold areasto prevent sweating. Insulation isavailable as a factory provided,factory installed option.

Insulation for cold insulation areashould be ¾-inch (19 mm) Armaflexor equivalent, and should be appliedto evaporator waterboxes,refrigerant storage tank, refrigerantpump and refrigerant piping.

Cold insulation area on ABSDrequires __________ per unit.

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

ABS-PRC001-E450

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”wall 95/5 cupro-nickel975-1350 tonnages .028” wallcopperCondenser – .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 tubeswithout problems of high stress

• Designed, manufactured andtested for superior hermeticintegrity

• 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 and absorber waterconnections

• Major component disassembly intwo pieces for installations that canbenefit from the handling ofsmaller components.

• Lithium bromide filter• Stainless steel evaporator pan

Design Special OptionsIn addition to the options alreadyavailable, Trane’s design departmentis able to supply custom features formany special 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 outdoorelements or water impingementfrom various directions

• Alternate pass arrangements • Marine-style evaporator water

boxes • Epoxy paint system for added

protection against outdoorelements or corrosiveenvironments such as chemicalplants 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-cleaningcapability

• Custom control configurations• Specials for international code

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

heat sources• Hinged water box covers

ABS-PRC001-E4 51

To Convert From: To: Multiply By:LengthFeet (ft) meters (m) .30481Inches (In) millimeters (mm) 25.4AreaSquare Feet (ft2) square meters (m2) .093Square Inches (In2) square millimeters (mm2) 645.2VolumeCubic Feet (ft3) Cubic meters (m3) .0283Cubic Inches (In3) Cubic mm (mm3) 16387Gallons (gal) litres (l) 3.785Gallons (gal) cubic meters (m3) .003785FlowCubic feet/min (cfm) cubic meters/second (m3/s) .000472Cubic feet/min (cfm) cubic meters/hour (m3/hour) 1.69884Gallons/minute (GPM) cubic meters/hour (m3/hour) .2271Gallons/minute (GPM) litres/second (l/s) .06308VelocityFeet per minute (ft/m) meters per second (m/s) .00508Feet per second (ft/s) meters per second (m/s) .3048

To Convert From: To: Multiply By:Energy and Power and CapacityBritish Thermal Units (BTUH) Kilowatt (kW) .000293British Thermal Units (BTU) KCalorie (Kcal) .252Tons (Refrigeration Effect) Kilowatt (Refrigerant Effect) 3.516Tons (Refrigeration Effect) Kilocalories per hour (Kcal/hour)3024Horsepower Kilowatt (kW) .7457PressureFeet of water (ftH2O) Pascals (PA) 2990Inches of water (inH2O) Pascals (PA) 249Pounds per square inch (PSI) Pascals (PA) 249PSI Bar or KG/CM2 6895WeightOunces (oz) Kilograms (kg) .02835Pounds (lbs) Kilograms (kg) .4536Fouling Factors for Heat Exchangers.00075 ft2 °F hour/BTU = .132 m2° K/kW.00025 ft2 °F hour/BTU = .044 m2° K/kW

StandardConversionTable

Temperature Temperature Temperature Temperature Temperature

FOR INTERPOLATION IN THE ABOVE TABLE USE:

BASE TEMPERATURE [°F or °C):DEGREES CENTIGRADE:DEGREES FAHRENHEIT:

Temperature – Centigrade (°C) Versus Fahrenheit (°F)Note: The center columns of numbers, referred to as BASE TEMPERATURE, is the temperature in either degrees Fahrenheit (°F) or Centigrade (°C),whichever is desired to convert into the other. If degrees Centigrades is given, read degrees F Fahrenheit to the right. If degrees Fahrenheit is given, readdegrees Centigrade to the left.

Literature Order Number

File Number

Supersedes

Stocking Location

Since Trane has a policy of continuous product and product data improvement, it reserves theright to change design and specifications without notice.

Société Trane – Société Anonyme au capital de 61 005 000 Euros – Siège Social: 1 rue des Amériques –88190 Golbey – France – Siret 306 050 188-00011 – RSC Epinal B 306 050 188Numéro d’identification taxe intracommunautaire: FR 83 3060501888

Trane

An American Standard Company

www.trane.com

For more information contactyour local sales office ore-mail us at [email protected]

ABS-PRC001-E4

PL-RF-ABS-000-PRC001-E4-1101

ABS-PRC001-E4 0400

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