16tj-1pd

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1/32Copyright 2005 Carrier Corporation Form 16TJ-1P

Carrier-Sanyos 16TJ single-effecthermetic absorption liquid chiller is aefficient and functional alternative totraditional electric driven chillers. The

16TJ absorption chiller uses low-pressure steam as its energy sourceas it eliminates the need for high coselectricity, it may qualify for financialincentives as a gas cooling product.The 16TJ absorption chiller offersfunctional flexibility in a variety ofinstallations: no CFCs; environmentally sound single stage design for simple,

dependable operation high reliability with few moving par nominal full-load steam rate of

17.2 lb/hr-ton quiet, vibration-free operation Direct Digital Controls (DDC) for

optimum chiller performance

Features/BenefitsSingle-effect absorptioncycle provides efficient,economical water chillingwith minimal use ofelectricity.

Cost-effective coolingAlternative-energy chiller The

16TJ chiller is a solution for buildingowners who want to avoid high operating costs associated with electric drivenchillers. Powered by low-pressure steamthe Carrier-Sanyo 16TJ absorptionchiller reduces or eliminates electricdemand and/or ratchet charges whileallowing the owner to take advantage ogas cooling incentives when offered bylocal utility companies.

16TJSingle-Effect, SteamHermetic Absorption

Liquid Chiller

100 to 700 Nominal Tons

ProductData

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Simple, reliable operation The16TJ chillers single generator providesone stage of solution reconcentration,which makes the 16TJ chiller one ofthe most basic cycles currently avail-able. The 16TJ chillers simple design,in addition to its other quality features,equates to inherently high reliability.

Few moving parts and simple, depend-able operation reduce downtime, aswell as service and maintenance costs.

Exceptional efficiency The 16TJchiller offers full-load steam rates of17.2 lb/hr-ton at standard ARI (AirConditioning and RefrigerationInstitute) operating conditions andleads the single-effect chiller market inefficiency. Incorporated into thestandard machine design is a solutionheat exchanger, intended to preheatthe weak lithium bromide solution

being pumped to the generator byprecooling the strong solution from thegenerator, as well as a second heatexchanger to further boost cycleefficiency by reclaiming additional heatfrom the steam condensate to furtherpreheat the weak solution.

Superior part-load performance The concentration control system of the16TJ chiller allows stable, part-loadoperation at cooling water tempera-tures as low as 64 F exclusive of theneed for a cooling tower bypass. A con-trol valve integral to the machine guar-

antees stable, continuous refrigerantpump operation at part-load conditions.The 16TJ chiller has a continuousoperating range from 100% to 10% ofrated machine capacity.

Application versatilityDesigned for a variety of applica-tions Specifically designed for usewith low-pressure steam, the 16TJchiller can be applied to a variety ofcooling needs. Waste steam fromindustrial processes and/or cogenera-tion systems can be used to provide

chilled water for process cooling, aswell as comfort cooling, thus reducingthe need for additional energy andcontributing to greater overall energysavings.

Ideal for new or retrofit applica-tions From replacement or expan-sion of existing chiller systems to newconstruction projects, the 16TJ chilleris capable of meeting the needs ofalmost any cooling application. Fifteenmodel sizes, with a capacity range of

100 to 700 tons, make the 16TJsingle-effect absorption chiller the ulti-mate choice for comfort cooling and/or light industrial applications.Computerized performance ratings al-low the appropriately sized machine tobe selected in order to meet exact jobrequirements. All machine selections

are rated in accordance with ARIStandard 560-2000.

Combine absorption and electric-driven chillers Utilizing bothabsorption and electric chillers in acentral plant offers the flexibility tobase load one chiller, while using theother to handle peak load require-ments. Hybrid chiller systems haveproven to be an economical solutionfor many chilled water plants. In manygeographical areas, operating theelectric chiller as the base loaded

machine while using the absorptionchiller during peak load conditionsprovides the most economical operat-ing cost scenario. The reverse mayalso be true, depending on utility ratestructures and other job specifics.Either way, a 16TJ single-effectabsorption chiller used in conjunctionwith an electric-driven chiller may bethe most efficient and cost-effectivecombination available.

Location and installationsavingsEase of installation All machinesare completely fabricated, assembled,wired and tested in the factory as single-piece units. Units are customarilyshipped in one piece for all model

sizes, but shipment in multiple sectionsis available, making the 16TJ chillerideal for retrofit or replacement installa-tions where equipment room accessmay be limited. Re-assembly of thechiller at the jobsite, if required, is bothstraightforward and simple due tospecial provisions made to the machine

during the factory fabrication and sec-tioning process.

Small footprint Compared toother single-effect chillers, the 16TJchiller is significantly smaller in overallphysical size and weight, saving valu-able space in the equipment room aswell as reducing the rigging and instal-lation cost of the machine.

Flanged waterbox nozzles All16TJ chillers incorporate ANSI(American National Standards Institute)raised face flanges as standard on all

external piping connections, simplify-ing chiller installation and field piping.

Low sound and vibration levelsallow location flexibility Absorp-tion chillers are distinguishable by theirlow sound and vibration levels, primarilybecause the only rotating parts are therefrigerant and absorbent pumps. Theoverall sound level of the Carrier-Sanyo16TJ chiller is typically 80 dbA, there-fore the machine may easily be installednear occupied spaces or in areas withstrict sound requirements. Low vibra-tion levels also make it possible to install

the chiller on upper floors without spe-cial consideration for vibration dampen-ing systems.

Features/Benefits (cont)

Table of contentsPage

Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Machine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-22Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-26Typical Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28-32

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Microprocessor controlfeatures/benefitsEach 16TJ single-effect chiller includesa pre-programmed, factory-mountedand factory-wired control panel, whichis functionally tested prior to shipment.Chiller monitoring and control isautomatic and continuous, and thescreen on the front panel displayschiller operational status and faultindications in English or metric units.

The Carrier-Sanyo microprocessorPID (proportional, integral, derivative)control system surpasses proportionalonly control systems by maintaining pre-cise leaving chilled water temperatureversus actual set point. The PID controlssurpass proportional only controls intheir ability to control the machine andnarrow temperature variations. The16TJ chiller control system also incor-

porates the ability to control the chilledwater and cooling water pumps auto-matically. During shutdown thesepumps are sequenced to ensure a com-plete dilution cycle, thus providing pro-tection from solution crystallization.

Leaving chilled water temperature ismeasured every 5 seconds by the con-trol system. Steam input to the genera-tor is then adjusted according to thedegree of deviation of actual leavingchilled water temperature versus setpoint. System temperatures, set pointsand operational records are displayed

on the front of the panel along withvarious indicator lights that representchiller operational status. A purgestatus light on the panel indicates whennoncondensables need to be exhaustedfrom the external purge storage cham-ber via the purge pump.

The Carrier-Sanyo 16TJ chillerscontrol system automatically performsself-diagnostic checks by constantlymonitoring the chillers operationalstatus and will automatically shut downthe machine if a fault occurs. The

cause of shut down will be retained inthe controllers memory and can bedisplayed for immediate operatorreview. The controllers memory willalso retain and display the cause ofthe last three system fault conditions,which is extremely useful for maintain-ing an accurate record of unit perfor-mance and fault history.

Local or remote operation of the16TJ chiller can be done by configura-tion of the controls during initial setup.

Single point electrical connection Installation costs are reduced byeliminating the need for field wiring be-tween machine components. All elec-trical items, including the unit-mountedpurge pump, are factory-wired to thechiller control center and require a sin-gle point electrical connection to the

machine from the buildings electricalservice. A control power transformermounted in the chiller panel providessecondary single-phase control power.

Low maintenanceDurable machine construction Each Carrier-Sanyo 16TJ chiller isconstructed to meet rigorous manufac-turing and design requirements in anISO-9002 and ISO-14001 certifiedfacility. Furthermore, every machinemeets strict Underwriters Laboratories(UL) certification requirements and

is UL listed. The 16TJ chiller offersnumerous features as part of itsstandard design to provide dependableoperation. Corrosion-proof stainlesssteel dispersion trays ensure continu-ous, reliable operation, free fromblockage often characteristic ofalternative designs. The evaporator,absorber and condenser tubesheetsand waterboxes are epoxy painted toresist rust and corrosion. Also, everymachine is furnished with a rupturedisk to protect against an overpressurecondition on the shellside. These

standard design and constructionfeatures mean that every 16TJ single-effect chiller is built to withstand themost rigorous duty, whether appliedfor comfort cooling service or lightprocess applications.

Leakproof hermetic pumps withisolation valves cut maintenancecosts The 16TJ chillers absorbentand refrigerant pump/motor assem-blies have a leakproof, self-containedand hermetically sealed design. Thehermetic construction eliminates the

need for a separate, complicated,and possibly leakprone seal watersystem and auxiliary water piping,while providing leak tightness andlonger machine life. Specially designedbearings absorb both radial and axialthrusts to ensure correct fit at all times.Concerns about external contaminationare eliminated since the fluid beingpumped lubricates and cools the pumpand motor assemblies. In addition, boththe rotor and stator are separated by a

stainless steel liner that protects thewindings from the fluid being handled.Thermal overload switches are embed-ded in the stator as an additional safetyfeature. This feature protects againsthigh winding temperature. The pumpsare field serviceable and inspection isrecommended after 25,000 hours or

3 years of continuous operation. Isola-tion valves, a standard feature on thesuction and discharge of the absorbentand refrigerant pumps, allow easy ac-cess for service and maintenance.

Waterbox design simplifies main-tenance procedures Every 16TJchiller is provided with numerousstandard design features that permitconvenient and simple maintenanceto be carried out quickly. Hinged orremovable waterbox covers on theevaporator, absorber, and condenser

facilitate tube and waterbox inspectionand/or cleaning from either end of themachine. In addition, the absorber andcondenser sections are furnished asstandard with marine waterboxes foreasy access without having to disas-semble water piping.

Factory-trained service organiza-tion In addition to routine mainte-nance and repair services, Carrier alsooffers a wide array of preventativemaintenance, full maintenance, and/orextended service contracts which canbe custom-tailored to fulfill any service

requirements. Carriers extensiveservice organization offers trained andexperienced service technicians inevery major city.

Superior corrosion protection All absorption chillers must be protect-ed from the corrosion that occurs oninternal machine surfaces when incontact with lithium bromide solution.The 16TJ absorption chiller includesan extremely effective corrosioninhibitor to provide an extra margin ofprotection against internal corrosion.Other inhibitors may need exotic tubematerials in certain heat exchangers asthey are less effective and require morefrequent maintenance and analysis.The superior corrosion protection ofthe Carrier-Sanyo inhibitor allowsthe use of standard copper tubesthroughout the machine (except forsteam generator tubes, which are90/10 cupronickel), which results inlong machine life and dependableoperation.

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Automatic purge extendsmachine life, ensures optimumefficiency and performanceThe purge system on an absorptionchiller is essential to ensuring longmachine life and efficient operation.All absorption chillers operate in avacuum and generate hydrogen (andother noncondensable gases) in smallquantities, even when they are vacuumtight and properly inhibited. If notproperly controlled, these gases caninterfere with machine operation,therefore it is imperative that they beremoved to protect against internalcorrosion, lithium bromide solutioncrystallization, and/or reduction ofchiller capacity. The Carrier-Sanyopurge system protects against thesepotential hazards by operating continu-ously during machine operation.

How the purge system operates During chiller operation, any noncon-densables that are present tend toaccumulate in the absorber section,which operates at the lowest pressureinternal to the machine. A slipstreamof lithium bromide solution flowsthrough an eductor from the absorbentpump discharge. This process createssuction, which draws the noncondens-ables from the absorber, entrainingthem with the solution flowing throughthe eductor. The eductor discharges thesolution and noncondensables into the

purge tank, where the noncondens-ables are separated from the solution.The noncondensables remain in thepurge tank while the lithium bromidesolution returns to the absorber sump.As noncondensables accumulate in theexternal purge tank, they are isolatedfrom the chiller and cannot re-enter thechiller even during shutdown. A heatedpalladium cell connected to the storagechamber aids in elimination of hydro-gen from the purge tank at all times. Aunit-mounted purge pump further aids

in removing noncondensables from thepurge tank, when necessary.

Anticrystallization controls main-tain proper solution concentration The 16TJ chiller automatically limitssolution concentration in several ways toavoid both crystallization and overdilu-tion to provide dependable, trouble-freeoperation. Crystallization of the lithiumbromide solution depends on the combi-nation of temperature and concentra-tion. The Carrier-Sanyo concentrationcontrol system automatically monitorssolution concentration by continuouslysensing the temperature of the strongsolution and the refrigerant condensa-tion temperature. From this data, themicroprocessor controls are able todetermine the solution concentrationand automatically limit the heat input tothe chiller, if necessary, to prevent an

overconcentration condition fromoccurring. Constant monitoring of thecycle ensures continuous, reliable opera-tion even at cooling water temperaturesas low as 64 F. Upon shutdown, thechiller dilution cycle is automatically con-trolled to an optimized period rangingfrom 6 to 15 minutes by the micropro-cessor controls in conjunction with thegenerator solution temperature. Thisoptimized dilution operation period en-ables energy savings of the onboardchiller pumps as well as the chilled waterand cooling water pumps. The dilution

cycle also minimizes the time requiredfor chiller start-up by preventingoverdilution of the solution.

16TJ single-effect absorptioncooling cycleThe 16TJ single-effect absorption chilleris comprised of an evaporator,absorber, condenser, steam generator,solution heat exchanger, steam drainreclaimer, refrigerant/absorbent pumps,purge, controls, and auxiliaries. Water isused as the refrigerant in vessels main-tained under low absolute pressure

(vacuum).

The chiller operates on the principlethat under vacuum, water boils at a lowtemperature (approximately 40 F),thereby cooling the chilled watercirculating through the tubes of theevaporator. A refrigerant pump is usedto circulate the refrigerant water overthe evaporator tubes to enhance the

heat transfer process. The refrigerantvapor is removed as it is produced inorder to make the cooling processcontinuous. A lithium bromide solution(which has a high affinity for water)is used to absorb the water vapor. Asthis process continues, the lithiumbromide becomes diluted, whichreduces its absorption ability. Anabsorbent pump then transfers thisweak (diluted) solution to the genera-tor, where it is reconcentrated by theintroduction of low-pressure steam inthe tubes of the generator to boil off

the previously absorbed water. Thewater vapor released on the shellsideof the generator enters the condenserto be cooled and returned to a liquidstate. At this point, the refrigerantwater returns to the evaporator tobegin a new cycle. To remove heatfrom the machine, relatively cool waterfrom a cooling tower or other source iscirculated through the tubes of theabsorber to remove the heat ofvaporization. This same water is thencirculated through the tubes of thecondenser. The strong (reconcentrated)solution from the generator flows backto the absorber to begin a new cycle.For efficiency, the strong solutionfrom the generator is passed through asolution heat exchanger to preheat theweak solution while precooling thestrong solution before returning to theabsorber. The steam drain reclaimeralso improves cycle efficiency by trans-ferring heat from the steam conden-sate to the weak solution.

Features/Benefits (cont)

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CondenserGenerator

Cooling Water

Outlet

Chilled Water

Outlet

Chilled Water

Inlet

Evaporator

Absorber

Cooling Water

Inlet

Refrigerant

Pump

PurgePump

Heat ExchangerAbsorbent

Pump

Steam DrainReclaimer

Steam Inlet

Steam Drain

Outlet

16TJ ABSORPTION CHILLER COOLING CYCLE

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Options and accessories

ITEMFACTORY-INSTALLED

OPTIONFIELD-INSTALLED

ACCESSORY

Cooling Water Flow Switch X

High-Pressure Waterboxes, 300 psig X

Isolation Package X

Marine Waterboxes X

Shipping Configuration (1-piece or 2-piece) XSpecial Tubing X

Steam Control Valve (Electric or Pneumatic) X

Thermometer Set X

Victaulic Nozzle Connections X

Model number nomenclature

16

16HermeticAbsorptionChiller

TJ 11

TJSingle Effect,Steam(1-Stage)

Unit Size Nominal Tons

11 10012 12013 15014 18021 21022 24023 28024 320

31 36032 40041 45042 50051 56052 63053 700

609

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Machine components

CONDENSER

GENERATOR

CHILLED WATER OUTLET

CHILLED WATER INLET

EVAPORATOR

COOLING WATER INLET

ABSORBER

HEAT RECLAIMER

HEAT EXCHANGER

CONTROL PANEL

STEAM DRAIN OUTLET

STEAM INLET

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UNIT 16TJ 11 12 13 14 21

NOMINAL COOLING CAPACITY (ton) 100 120 150 180 210

RIGGING WEIGHT (lb) 7,500 8,000 9,800 10,200 12,400

OPERATING WEIGHT (lb) 8,600 9,100 11,100 11,500 14,200

LITHIUM BROMIDE SOLUTION CHARGE (lb) 800 900 1,200 1,300 1,600

REFRIGERANT (WATER) CHARGE (lb) 110 90 150 150 180

CHILLED WATERPipe Connection Size (in.) 4 4 4 4 5

No. of Passes 4 4 3 3 3

COOLING WATER

Pipe Connection Size (in.) 5 5 5 5 6

No. of Passes

Absorber 3 3 2 2 2

Condenser 2 2 1 1 1

STEAMPipe Connection Size (in.)

Steam Inlet 5 5 5 5 6

Drain Outlet 1.5 1.5 1.5 1.5 1.5

UNIT 16TJ 22 23 24 31 32

NOMINAL COOLING CAPACITY (ton) 240 280 320 360 400



LITHIUM BROMIDE SOLUTION CHARGE (lb) 1,900 2,100 2,400 2,800 2,800


CHILLED WATER



COOLING WATER


No. of Passes

Absorber 2 2 2 2 2

Condenser 1 1 1 1 1

STEAM

Pipe Connection Size (in.)


Drain Outlet 1.5 1.5 1.5 2 2

UNIT 16TJ 41 42 51 52 53NOMINAL COOLING CAPACITY (ton) 450 500 560 630 700



LITHIUM BROMIDE SOLUTION CHARGE (lb) 3,600 3,600 4,200 4,700 5,200


CHILLED WATERPipe Connection Size (in.) 8 8 8 8 8


COOLING WATER


No. of Passes

Absorber 2 2 2 2 2

Condenser 1 1 1 1 1

STEAM

Pipe Connection Size (in.)


Drain Outlet 2.5 2.5 2.5 2.5 2.5

Physical data

805

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Dimensions

LEGEND

ANSI

AmericanNationalS

tandardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:

1.Dimensionsareshownin

inches.

2.Dimensions(L),(W),(H)areforstandardmachine.

3.

indicatesthepositionofanchorbolts.

4.Forroutinemaintenanceallow3ftclearanceonallsidesand

8in.abovechiller.

5.Fortuberemovalclearanc

e,refertodrawing.

6.Standardwaterpipingcon

nectionsareANSI150lbflanges.

7.Passquantityandnozzle

locationsareforstandardmachine;

otherconfigurationsareavailable.

16TJ11AND

16TJ12

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Dimensions (cont)

16TJ13AND

16TJ14

NOTES:

1.Dimensionsareshownininches.


3.

indicatestheposition

ofanchorbolts.

4.Forroutinemaintenancea

llow3ftclearanceonallsidesand

8in.abovechiller.

5.Fortuberemovalclearance,refertodrawing.

6.StandardwaterpipingconnectionsareANSI150lbflanges.

7.Passquantityandnozzlelocationsareforstandardmachines;

otherconfigurationsareav

ailable.

LEGEND

ANSI

AmericanNationalStandardsInstitute

CHW

ChilledWater

COW

CoolingWater

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11

16TJ21AND

16TJ22

LEGEND

ANSI

AmericanNationalStand

ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:

1.Dimensionsareshownininch

es.


3.

indicatesthepositionofanchorbolts.

4.Forroutinemaintenanceallow

3ftclearanceonallsidesand

8in.abovechiller.


6.Standardwaterpipingconnec

tionsareANSI150lbflanges.

7.Passquantityandlocationsa

reforstandardmachine;other

configurationsareavailable.

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Dimensions (cont)

16TJ23AND

16TJ24

LEGEND

ANSI


ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:


es.


3.

indicatesthepositionof

anchorbolts.



8in.abovechiller.




7.Passquantityandnozzlelocationsareforstandardmachine;


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16TJ31AND

16TJ32

LEGEND

ANSI


ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:

1.Dimensionsareshownininches.

2.Dimensions(L),(W),(H)arefo

rstandardmachine.

3.

indicatesthepositionofa

nchorbolts.



8in.abovechiller.


6.StandardwaterpipingconnectionsareANSI150lbflanges.



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Dimensions (cont)

16TJ41AND

16TJ42

LEGEND

ANSI


ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:


es.


3.


anchorbolts.

4.Forroutinemaintenanceallow3ftclearanceonallsidesand

8in.abovechiller.






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16TJ51

LEGEND

ANSI


ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:


es.


3.


anchorbolts.



8in.abovechiller.




7.Passquantityandnozzleloca

tionsareforstandardmachine;

otherconfigurationsareavaila

ble.

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Dimensions (cont)

1

6TJ52

LEGEND

ANSI


ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:


es.


3.


anchorbolts.



8in.abovechiller.







ble.

805

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17

1

6TJ53

LEGEND

ANSI


ardsInstitute

CHW

ChilledWater

COW

CoolingWater

NOTES:


es.


3.


anchorbolts.



8in.abovechiller.







ble.

805

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Dimensions (cont)

FOUNDATION

UNIT

16TJ

WEIGHT

(lb)

DIMENSIONS(in.)

AA

BB

A

B

C

D

E

F

G

J

K

11

4,300

4,300

745/8

71/4

141/8

311/2

57/8

431/4

61/4

353/8

12

4,550

4,550

745/8

71/4

141/8

311/2

57/8

431/4

61/4

353/8

13

5,550

5,550

1143/4

71/4

141/8

311/2

57/8

431/4

61/4

353/8

14

5,750

5,750

1143/4

71/4

141/8

311/2

57/8

431/4

61/4

353/8

21

7,100

7,100

1127/8

77/8

153/4

393/8

57/8

511/8

77/8

431/4

22

7,400

7,400

1127/8

77/8

153/4

393/8

57/8

511/8

77/8

431/4

23

8,600

8,600

153

77/8

153/4

393/8

57/8

511/8

77/8

431/4

24

9,050

9,050

153

77/8

153/4

393/8

57/8

511/8

77/8

431/4

31

11,150

11,150

151

87/8

173/4

431/4

57/8

551/8

97/8

471/4

32

11,600

11,600

151

87/8

173/4

431/4

57/8

551/8

97/8

471/4

41

13,500

13,500

151

87/8

173/4

451/4

57/8

571/8

97/8

491/4

42

14,050

14,050

151

87/8

173/4

451/4

57/8

571/8

97/8

491/4

51

19,200

19,200

1457/8

51/8

51/8

201/8

63

71/8

771/8

97/8

667/8

52

20,750

20,750

1671/4

51/8

51/8

201/8

63

71/8

771/8

97/8

667/8

53

22,200

22,200

1867/8

51/8

51/8

201/8

63

71/8

771/8

97/8

667/8

NOTES:

1.Dimensions

are

shown

in

inches.

2.Thebaseofthemachinehas

2-in.diameterholesforanchor

bolts.

3.Anchorboltsshouldbefixed

asshownindetailedfoundation

drawings.Washershould

be

weldedtobase.

4.Drainditcharoundthefounda-

tionisoptional.

5.Surfaceoffoundationshouldbe

flatwithin1/4in.per20ft.

6.Anchorbolts,washersandnuts

aresuppliedbycustomer.

16TJ11-42

16TJ51-53

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NOTE: Ratings are based on ARI 560-2000:44 F chilled water, 2.4 gpm/ton, .0001 ft2-hr-F/Btu fouling factor

85 F cooling water, 3.6 gpm/ton, .00025 ft2-hr-F/Btu fouling factor15 psig steam supply pressure

Part-load performancePart-load performance energy requirements for the 16TJchiller, ranging from 10% to 100% of full load, can beobtained by contacting a local sales office.

All performance data is rated in accordance with ARI560, latest edition, which defines Integrated Part LoadValue (IPLV) as a measure of part-load efficiency represent-ing the weighted average of overall chiller performance

calculated by the following equation:IPLV = .01A + .42B + .45C + .12D where

A = COP (Coefficient of Performance) at 100%B = COP at 75%C = COP at 50%D = COP at 25% or minimum load

UNIT 16TJ 11 12 13 14 21 22 23 24

COOLING CAPACITY (Ton) 100 120 150 180 210 240 280 320

CHILLED WATERFlow Rate (gpm) 240 288 360 432 504 576 672 786Pressure Drop (ft) 16.5 16.9 21.0 22.2 19.6 20.9 13.6 14.7

COOLING WATERFlow Rate (gpm) 360 432 540 648 756 864 1008 1152Pressure Drop (ft) 11.2 12.1 10.3 12.1 10.5 11.5 21.4 23.0

STEAM (lb/hr) 1720 2070 2580 3100 3620 4130 4820 5510(lb/hr-ton) 17.2 17.2 17.2 17.2 17.2 17.2 17.2 17.2

UNIT 16TJ 31 32 41 42 51 52 53

COOLING CAPACITY (Ton) 360 400 450 500 560 630 700

CHILLED WATERFlow Rate (gpm) 864 960 1080 1200 1344 1512 1680Pressure Drop (ft) 15.8 16.9 13.7 14.7 12.7 17.1 22.2

COOLING WATERFlow Rate (gpm) 1296 1440 1620 1800 2016 2268 2520Pressure Drop (ft) 18.0 18.6 19.7 21.1 13.6 18.1 23.4

STEAM (lb/hr) 6200 6880 7740 8600 9640 10840 12040(lb/hr-ton) 17.2 17.2 17.2 17.2 17.2 17.2 17.2

Performance data

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Range of applicationThe 16TJ single-effect steam-fired absorption chiller isdesigned for standard water chilling applications of 100 to700 tons at standard ARI rating conditions. In most appli-cations, the minimum leaving chilled water temperature islimited to 41 F. The minimum continuous inlet watertemperature to the absorber-condenser circuit is 64 F,although lower temperatures are permitted during machinestart-up. Use of a cooling tower bypass is required if watertemperatures are anticipated to be less than this value.Steam supply to the generator should be dry and saturatedand at a maximum pressure of 15 psig.

UL certificationAll 16TJ chillers have met the necessary design and con-struction qualifications for certification per UnderwritersLaboratories. Each machine carries a UL listing and islabeled accordingly.

Vent and drain connectionsVent and drain connections are found on each waterbox.Provide a vent on the high points of all water piping and a

drain on all low points. If shutoff valves are provided in themain water piping close to the chiller, some system waterwill be lost when the heat exchangers are drained.

It is recommended that pressure gages be provided atthe entering and leaving water connections to measurepressure drop through the heat exchanger. Gages may beinstalled as shown in the table below. Pressure gages in-stalled at the vent and drain connections do not includenozzle pressure losses.

Use a reliable manometer to measure pressure differen-tial when determining water flow. Regular gages are insen-sitive and do not provide an accurate measurement of flowconditions.

PRESSURE GAGE LOCATION

Rupture disk pipingAll 16TJ chillers are equipped with a rupture disk. It isrecommended that piping from the rupture disk be routedto appropriate areas away from the machine in accordancewith Carrier-Sanyos written installation instructions, thelatest version of ANSI/ASHRAE-15 (American National

Standards Institute/American Society of Heating, Refriger-ation, and Air Conditioning Engineers), and any local jurisdictional requirements that may apply. Piping shouldbe adequately supported and the proper fittings should beprovided to allow periodic inspection of the disk. Refer tothe machine dimensional drawing for the exact location ofthe rupture disk on the chiller.

DESIGN AND TEST PRESSURES

LEGEND

Service accessTo perform routine service or maintenance, allow 3 ftclearance on all sides of the machine and 8 in. above thechiller. Tube removal space equal to the overall length ofthe unit should be provided on at least one end of the 16TJchiller. The absorber and condenser waterbox covers arehinged to permit easy opening and access for routine tubecleaning.

Thermal insulationThermal insulation of cold and hot machine surfacesshould be done after final installation at jobsite. Refer to

thermal insulation drawings for details on application tech-nique and specific areas of the machine to be insulated.Insulation material should be Armaflex or equal for coldsurfaces and fiberglass or equal for hot surfaces. Surfacearea requirements are per table below.

THERMAL INSULATION SURFACE AREAREQUIREMENTS (sq ft)

NUMBEROF

PASSES

GAGE LOCATION(Cooler or Condenser)

Even Two gages in waterbox with nozzles

Odd One gage in each waterbox

UNIT 16TJRUPTURE DISK

SIZEPIPING CONNECTION

SIZE

11-24 2 in. 2 in. 150 psig RF flange

31-53 3 in. 3 in. 150 psig RF flange

RF Raised Face

UNIT 16TJ

INSULATION THICKNESS

Hot Surface Cold Surface

3 in. 11/8 in. 2 in. 11/8 in.

11 30.1 17.3 43.0 3.3

12 30.1 19.4 43.0 3.3

13 40.9 20.5 59.3 3.3

14 40.9 23.7 59.3 3.3

21 43.0 26.9 65.7 4.3

22 43.0 26.9 65.7 4.3

23 56.0 33.4 81.8 5.4

24 56.0 35.5 81.8 5.4

31 64.6 37.6 91.5 5.4

32 64.6 38.8 91.5 5.4

41 71.0 39.9 106.7 5.4

42 71.0 42.0 106.7 5.4

51 81.8 51.7 148.5 7.5

52 90.4 54.9 161.5 7.5

53 99.0 57.0 173.3 7.5

Application data

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Steam control valveThe steam control valve for the 16TJ chiller is not part ofthe standard scope of supply of the unit. It is available as afield-installed accessory and is intended for installation atthe jobsite. The accessory valve is a single seated, balancedcage type with an equal percentage or modified linearV-port trim. The valve has a cast iron body with ANSI125 psig flanged end connections. Valve sizes are normally21/2 to 6 in., depending on specific job requirements.

A 4 to 20 mA signal from the chiller control paneoperates the valve through either an electric or pneumaticactuator. The control signal allows the valve to modulate theflow of steam into the generator to meet the required cool-ing load. An electric actuator requires 120-1-60 vac powersupplied from a separate source, to operate the motor. If thevalve is of the pneumatic type, an I/P (current-to-pressuretransducer is provided to convert the 4 to 20 mA contro

signal into a 3 to 15 psig input signal to the pneumaticactuator.

The leak classification for all valves is Class IV.

B

C

D

A

5.6

B

C

D

A

9.25

DIMENSIONS FLANGED ENDS (125 psig cast iron)

VALVE SIZE (in.) A B C D

2.5 9.5 20.38 4.63 3.50

3 11.0 26.63 4.88 3.88

4 13.0 21.38 5.63 4.565 15.0 23.13 7.38 5.44

6 16.5 23.13 7.38 6.30

ELECTRIC ACTUATORPNEUMATIC ACTUATOR

ACCESSORY STEAM CONTROL VALVE

609

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HEAT EXCHANGER STANDARD PASS AND NOZZLE LOCATION

LEGEND

HEAT EXCHANGER STANDARD WATERBOX AND CROSSOVER PIPE CONFIGURATION

LEGEND

AVAILABLE NOZZLE ARRANGEMENTS

LEGEND

UNIT 16TJEVAPORATOR ABSORBER CONDENSER GENERATOR

Pass Qty Inlet Location Pass Qty Inlet Location Pass Qty Outlet Location Pass Qty Inlet Location

11-12 4 L 3 L 2 R 1 L

13-22 3 R 2 L 1 R 1 R

23-53 2 L 2 L 1 R 1 R

L Left End (when facing control panel)R Right End (when facing control panel)

UNIT 16TJEVAPORATOR ABSORBER CONDENSER CROSSOVER PIPE

INCLUDEDInlet Outlet Inlet Outlet Inlet Outlet

11-53 N N M M M M Yes Yes

M Marine Type WaterboxN Nozzle-In-Head Waterbox

UNIT16TJ

CHILLED WATER COOLING WATER STEAM

6 pass 5 pass 4 pass 3 pass 2 pass 4 + 2 pass 3 + 2 pass 2 + 1 pass 1 pass

In Out In Out In Out In Out In Out In Out In Out In Out In Out

11 L L R L L L R L L L R R L R R L L L

12 L L R L L L R L L L R R L R R L L L

13 R L L L R L L L R L L R R R

14 L L R L L L R L L L R L L R R R

21 L L R L L L R L L L R L L R R R

22 R L L L R L L L R L L R R R

23 L L R L L L R L L L R L L R R RC

24 R L L L R L L L R L L R R RC

31 L L R L L L R L L R R RC

32 L L R L L L R L L R R RC41 L L R L L L R L L R R RC





L Nozzle location on LEFT end (when facing control panel)R Nozzle location on RIGHT end (when facing control panel)RC Nozzle location is approximately RIGHT OF CENTER of

machine (when facing control panel)Standard nozzle arrangement

Application data (cont)

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UNIT VOLTAGE

460-3-60

208-3-60

LEGEND NOTES:1. MCA and MFA include absorbent pump, refrigerant pump, purge

pumps, palladium cell heater and control circuit.2. kW includes refrigerant pump, absorbent pump, purge pump, pal

ladium cell heater and control circuit.3. Control circuit voltage = 24-1-60.4. Palladium cell voltage = 230-1-60 (460-3-60 power supply) and

208-1-60 (208-3-60 power supply).

UNIT16TJ

PUMP/MOTOR (kW) RLA TOTALAMPS

MCA MFA kWAP RP PP AP RP PP

11 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.3

12 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.3

13 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.3

14 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.3

21 2.2 0.2 0.75 5.1 1.2 1.45 8.6 10.4 15 5.9

22 2.2 0.2 0.75 5.1 1.2 1.45 8.6 10.4 15 5.9

23 2.2 0.3 0.75 5.1 1.25 1.45 8.7 10.4 15 5.9

24 2.2 0.3 0.75 5.1 1.25 1.45 8.7 10.4 15 5.9

31 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

32 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

41 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

42 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

51 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

52 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

53 3.0 0.3 0.75 6.7 1.25 1.45 10.3 12.9 20 7.2

UNIT16TJ

PUMP/MOTOR (kW) RLA TOTALAMPS

MCA MFA kWAP RP PP AP RP PP

11 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.0

12 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.0

13 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.0

14 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.0

21 2.2 0.2 0.75 10.2 2.2 3.2 17.5 21.7 30 5.5

22 2.2 0.2 0.75 10.2 2.2 3.2 17.5 21.7 30 5.5

23 2.2 0.3 0.75 10.2 2.4 3.2 17.7 21.9 30 5.6

24 2.2 0.3 0.75 10.2 2.4 3.2 17.7 21.9 30 5.6

31 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0

32 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0

41 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0

42 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0

51 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0

52 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.053 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0

AP Absorbent PumpMCA Minimum Circuit AmpacityMFA Maximum Fuse AmpsPP Purge PumpRLA Rated Load AmpsRP Refrigerant Pump

STANDARDVOLTAGE

(3-Ph, 60 Hz)FOR USE ON SUPPLY VOLTAGES

208 200 to 208-volt systems

460 440 to 480-volt systems

Electrical data

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Microprocessor controlsMicroprocessor controls provide the safety, interlock,capacity control, and indications necessary to operate thechiller in a safe and efficient manner.

Control systemThe microprocessor control on each 16TJ chiller isfactory-mounted, factory-wired, and factory-tested to

ensure chiller protection and efficient capacity control. Inaddition, the program logic ensures proper starting, stop-ping, and cycling of the chiller.

Features

Control system

Diagnostic check Keypad interface for display, set point control and

system configuration Local and remote operation modes Recall of alarm/alert messages Extensive diagnostic and service capabilities Advanced crystallization protection

Safety cutouts Absorbent pump motor overload Refrigerant pump motor overload Purge pump motor overload Low chilled water temperature

Low cooling water temperature Generator high temperature Generator high pressure Chilled water flow Optional cooling water flow Chilled water pump interlock Cooling water pump interlock High solution concentration

Overrides

Solution concentration control Desolidification mode

Capacity control

Leaving chilled water control Steam demand limit Chilled water reset

Indications

Chiller operating status Dilution cycle Power-on Pre-alarm alert

Alarm Safety shutdown messages Elapsed time (hours of operation) Remote/local Standby mode

Controls

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FAN

CONTROL DISPLAY(SEE DETAIL BELOW)

TERMINAL BLOCK

PURGE INDICATIONLAMP

TERMINAL BLOCK

TERMINAL BLOCKFOR POWER SUPPLY

GROUND TERMINAL

EMERGENCY STOPBUTTON

PURGE PUMPON-OFF SWITCH

CHILLER / HEATER

STOP RUN

SET B ACK

#1ABS PUMP

#2ABS PUMP

REF PUMP

PURGE PUMP

SAFETY CIRCUIT

POWER

CHILLER ALARM

STAND BY

D ILU TIONB U ZZER S TOP

OPERATIONS TOP RU N

R EMOTE

L OCA L

CHILLER / HEATER

STOP RUN

SET BACK

#1ABS PUMP

#2ABS PUMP

REF PUMP

PURGE PUMP

SAFETY CIRCUIT

POWER

CHILLER ALARM

STAND BY

DILUTIONBUZZER STOP

OPERATIONSTOP RUN

REMOTE

LOCAL

10

1

5

3

27

9

6

8

4

TYPICAL 16TJ ABSORPTION CHILLER CONTROL PANEL

FRONT AND LEFT SIDE VIEW

NUMBER DESCRIPTION

1 Data display

2 Remote/local select button with lamp

3 Operation select button with lamp

4 Alarm indication lamp

5 Power indication lamp

6 Safety circuit indication lamp

7 Dilution indication lamp

8 Stand by indication lamp

9 Stop indication lamp

10 Operation indication lamp

CONTROL DISPLAY

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Controls (cont)

CONTROL RELAY

CIRCUIT PROTECTOR

TRANSFORMER

TERMINAL BLOCK

TRANSFORMER

I/O BOARD

FUSE

FUSE

MAIN CIRCUITBREAKER

TRANSFORMER

ELECTROMAGNETIC

CONTACTOR

TERMINAL BLOCK

TYPICAL 16TJ ABSORPTION CHILLER CONTROL PANEL (cont)

INSIDE AND RIGHT SIDE VIEW

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Typical piping

NOTES:

1.Allitemsexternalto

thedottedlineintheabovediagramareto

befield-supplied.

2.Pipingandcomponentsshownaretypicaltoindicategeneralp

oint-of-connectiononlyandarenotintende

dtoshowdetailsfora

specificinstallation.

Installationandpipingshouldbedoneinaccordancewith16TJInstallationInstructions.

3.Referto16TJchillerdimensional,foundationandfieldwiringdr

awingsfordetailsofaspecificmodelsize.

4.Installthermometersandpressuregagesatlocationsconvenientforservicingintheinletandoutletwaterlinestothechiller.

5.Locationofthechilledwaterandcoolingwaterpumpsaswella

stheexpansiontankmusttakeintoaccoun

tthehydrostatichead

toensurethatthew

aterboxdesignpressureisnotexceeded.

6.Provideventanddrainvalvesineachwaterbox.

7.Provideatowerbyp

assvalveifthetemperatureofthecoolingw

aterreturningfromthetowercanfallbelow

64F.

8.Standardsteamsup

plypressureis15psig.Ifthesupplypressureissignificantlygreaterthan15psig,apressurereducingvalve

andsafetyreliefvalveshouldbelocatedinthepipingasindica

ted.Thesafetyreliefvalveshouldbesetat15psig.Pipethedis-

chargeofthereliefvalveinaccordancewithlocalcoderequirements.

9.Astrainer,pressure

gage,dripleganddraintrapshouldbeprovidednearthesteaminlet.Abypassaroundtheaccessorysteam

controlvalveisreco

mmendedforinspectionandmaintenancepurposes.

10.Maximumbackpressureinthecondensatereturnlineis2.8psig.

11.Provideashutoffva

lveinthesteamlinetoensureagainstleakageduringchillershutdown.

LEGEND

CHW

ChilledWater

COW

CoolingWater

Flowmeter

PressureGage

Pump

StopValve

StopValveforCleaningLiquid

Strainer

Thermometer

Thermostat

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Single-Effect, Steam Hermetic AbsorptionLiquid Chillers

Size Range: 100 to 700 Tons

Carrier-Sanyo Model Number: 16TJ

Part 1 General

1.01 SYSTEM DESCRIPTION

Electronically controlled, single effect (one-stage) absorp-tion liquid chiller utilizing hermetic refrigerant and absor-bent pumps, lithium bromide solution as the absorbent,and water as the refrigerant. Low pressure steam shall besupplied to the generator as the heat source.

1.02 QUALITY ASSURANCE

A. Chiller performance shall be rated in accordancewith ARI Standard 560-2000.

B. Chiller shall be manufactured in accordance withANSI/ASHRAE 15 (latest edition) Safety Code forMechanical Refrigeration.

C. Chiller shall be designed and constructed to meetapplicable UL requirements and shall bear the UL

label.D. Each chiller shall undergo a series of standard fac-

tory tests to ensure that the unit is leak tight, that allelectrical components operate as intended, and thatevery aspect of unit fabrication meets stringent qual-ity standards in accordance with good practice andthe manufacturer's quality assurance requirements.

1. The shellside of each chiller shall be leak testedby pressurizing to 7 psig with nitrogen and thenchecked by spraying a soap and water mixtureon all welds, tube joints and/or gasketed jointsto identify any major leaks. Afterward, a massspectrometer test shall be performed by evacu-

ating the unit to 0.01 mm Hg absolute, cover-ing the machine with a vinyl tent andintroducing helium gas under the tent. Anyremaining leaks will allow the helium to bedrawn into the shellside of the machine. Theacceptable total leak rate as measured by themass spectrometer test shall not exceed.000002 cc/sec standard air.

2. The tubeside of the evaporator, absorber, con-denser and generator shall be hydrostaticallytested at 1.5 times rated design pressure andheld for 1 hour.

3. All machine wiring shall undergo an insulationresistance test. The machine control panel andall electrical components shall also be function-ally tested to verify continuity and properelectrical operation.

4. Final assembly inspection shall consist of verify-ing that all valves, controls, instrumentation,pumps, purge components and all othermachine components have been properlyinstalled on the machine.

5. Each unit shall be checked for overall appear-ance and dimensional accuracy.

6. Final inspection shall be performed on eachunit to check that the nameplate data is correctand that all accessories are furnished asrequired.

1.03 DELIVERY, STORAGE, AND HANDLING

A. Unit shall be stored and handled in accordance withthe manufacturer's recommendations.

B. Unit shall be factory-charged with lithium bromidesolution if the machine is configured to ship in onepiece. For shipments of multiple pieces, charging oflithium bromide solution shall be performed at the jobsite in accordance with the manufacturers writ-ten instructions.

C. All units shall be shipped with 3 psig nitrogenpressure.

D. Chiller shall be shipped with nameplates indicatingname of manufacturer, model size, serial numberand all other pertinent machine data.

1.04 WARRANTY

Manufacturer shall guarantee the chiller against defects in

materials or workmanship for a period of one year fromdate of initial operation or 18 months from date of ship-ment, whichever occurs first. Manufacturer shall providethe labor to repair or replace any part found to be defectivein material or workmanship within the warranty period.

Part 2 Products

2.01 EQUIPMENT

A. General:

Absorption liquid chiller shall include evaporator,absorber, condenser, generator, solution heatexchanger, refrigerant/absorbent pumps, purgesystem, piping, wiring, controls and auxiliaries.Standard shipment of the machine shall be in onepiece. Initial charge of lithium bromide shall beshipped inside the machine for all single-piece ship-ments. For multiple piece shipments, initial chargeof lithium bromide shall be shipped separately forcharging at the jobsite. Generator shall be designedfor operation on low pressure steam as specified onthe equipment schedule. A rupture disk shall be pro-vided as standard on all machines.

B. Operating Characteristics:

1. Chiller operation shall be characteristic of asingle-effect absorption cycle. The weaksolution pumped from the absorber to thegenerator shall initially pass through a solution

heat exchanger to improve operating efficiencyby preheating the weak solution on the tubeside with the strong solution returning from thegenerator on the shellside.

2. Unit shall be capable of continuous operationfrom 100 to 10% capacity, with enteringcondenser water temperatures as low as 64 Fwithout the need for a cooling tower bypassvalve. Thermostat on/off control of the coolingtower fan is recommended when cooling watertemperature falls below 64 F.

Guide specifications

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C. Heat Exchangers:

1. All heat exchangers shall be of shell and tubeconstruction with shells, tube sheets, tubesupport sheets and waterboxes fabricated ofcarbon steel. All heat exchangers shall incorpo-rate straight tubes. Tube material shall becopper for all heat exchangers except for thosetubes in contact with the externally suppliedsteam, which shall be 90/10 cupronickel. Theevaporator, absorber, condenser and generatortubes shall be rolled into grooved tubesheetsand expanded into tube support sheets, andshall be individually replaceable.

2. The evaporator, absorber and condenser water-boxes shall be designed for 150 psig workingpressure. The absorber and condenser water-boxes shall be hinged to permit access toall tubes from either end. Nozzle-in-head(NIH) type waterboxes shall be supplied on theevaporator while the absorber-condenser water-boxes shall be marine type. Waterboxes shall be

provided with vent and drain connections.Epoxy painting of the waterboxes and tubesheets shall be provided for corrosion protec-tion. ANSI 150 psig R.F. (raised face) flangesshall be furnished on all waterbox nozzleconnections.

3. The generator tube side shall be designed for15 psig working pressure for use with low pres-sure steam.

4. A solution heat exchanger shall be an integralpart of the machine to increase cycle efficiencyby preheating the weak solution on its way tothe generator while pre-cooling the strong solu-tion returning from the generator. To furtherimprove efficiency, a heat reclaimer shall alsobe furnished to pre-heat the weak solution withsteam condensate from the generator.

5. Dispersion trays shall evenly distribute refriger-ant over the evaporator tubes and lithium bro-mide over the absorber tubes. These trays shallbe fabricated of stainless steel to ensure contin-uous, corrosion-free, high-efficiency operation.

D. Pump/Motors:

Refrigerant and absorbent pump/motor assembliesshall be of the self contained, leakproof, hermetictype, without an external seal water systemto minimize air leakage into the machine. Lubrica-tion and cooling shall be accomplished by thefluid being pumped; auxiliary water piping for cool-ing and lubrication shall not be acceptable. Eachpump casing shall be welded into the piping atthe factory and shall be furnished with isolationvalves on the suction and discharge side. Each pumpshall include spring-loaded, wear-compensatingtapered carbon bearings to ensure long life and reli-ability. Pump/motor assemblies shall be designedfor 25,000 hours of normal operation betweeninspections.

E. Purge System:

An automatic purge system shall be furnished toprovide a continuous purging action whenever thechiller is in operation to assure long machine life andefficient performance. Noncondensables shall beremoved from the absorber by a liquid eductorwhich shall use flow from the absorbent pump tocreate a suction. Noncondensables shall be storedexternal to the unit and shall be prevented from dif-fusing back into the machine when the unit is notoperating. A palladium cell shall be provided toautomatically vent hydrogen gas from the purgechamber to the atmosphere. It shall be continuouslyenergized, even during machine shutdown. Furtherevacuation of the external storage chamber shall beaccomplished with a factory-mounted purge pumppiped and wired to the machine. The need to oper-ate the purge pump shall be indicated on the frontof the control panel.

F. Controls, Safeties and Diagnostics:

1. Controls:

a. The chiller shall be provided with a factoryinstalled and factory-wired microprocessorcontrol system with modular componenconstruction. The controls shall be of thePID type and shall continuously monitorthe operation of the chiller and performself-diagnostic checks to ensure that alcontrol limits are satisfied and maintainedThe system shall include a control centerpower supply, temperature sensors, pressure sensors and all necessary auxiliarydevices required for safe and proper chilleroperation housed in a NEMA-1 enclosurewith a hinged, lockable door. Control powershall be 24-1-60.

The chiller control system shall have the ability to interface and communicate with abuilding management system with additionahardware.

The control system shall include a 7-segmentlight-emitting diode (LED) display screenwith function keys, emergency stop buttonand indication lamps. The microprocessorshall be configurable to display either Englishor metric units.

b. The control panel display screen shall allowan operator to easily set and display theoperating mode and configurable settings ofthe machine. The display shall indicatepower on, chiller run status, safety circuitand alarm status, remote/local operationstandby mode and dilution cycle operationData input and machine settings shall bedone via a data select key and shall allowscrolling through the individual chillerparameter settings.

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c. Monitoring the operation of the chiller shallbe done on a continuous basis. The displayshall indicate all pertinent system operatingparameters and alarms, as necessary, includ-ing the following:

1) Chiller operating hours.2) Chilled water inlet temperature.3) Chilled water outlet temperature.4) Chilled water temperature set point.5) Cooling water inlet temperature.6) Condenser temperature.7) Generator temperature.8) Steam condensate temperature.9) Absorbent pump start counter and oper-

ating hours.10) Refrigerant pump start counter and

operating hours.11) Purge pump start counter and operating

hours.12) Chiller start counter.13) Purge tank pressure.

d. Capacity control shall be by means of elec-tronically modulating the accessory steamcontrol valve to maintain the temperature ofthe chilled water. Load modulation shall befrom 100% to 10% of machine full loadunder normal ARI conditions. The steamcontrol valve shall be positioned by a PIDcontrol algorithm to ensure precise controlof desired chilled water temperature withouthunting or overshooting the set point.

e. The microprocessor control system shallinclude a programmed sequence to ensuremachine readiness prior to machine start-up.The microprocessor shall automatically

enable and interlock the chilled water pump,cooling water pump and cooling tower fansupon chiller activation.

f. Upon request to start the chiller, the controlsystem shall start the chilled water pump andverify chilled water flow. The controller shallthen start the cooling water pump and verifyinterlock signal, before starting tower fan(s),absorbent pump and refrigerant pump.

g. The control system shall automatically senseimpending abnormalities in the absorptionoperating cycle and take the followingactions to either self-correct and/or limit the

machine from approaching cycle crystalliza-tion line:

1) Close steam control valve for a setperiod.

2) Stop the operation of the machine afterperforming a dilution cycle if the solu-tion concentration is still over the pre-setlevel.

h. The rate at which the steam control valve isopened shall be precisely controlled to limitstart-up steam demand.

i. The control system shall automatically cyclethe refrigerant pump whenever the leavingchilled water temperature falls below thedesired set point. The chilled water pumpshall remain on and when the leaving chilledwater temperature rises above the set point,the refrigerant pump shall automaticallyrestart.

j. The control center shall allow reset of thechiller water temperature set point basedupon any one of the following criteria:

1) Chilled water reset based on an external4 to 20 mA signal.

2) Chilled water reset based on coolingwater inlet temperature.

k. When the stop button is pressed or remotecontacts open the control center shall imme-diately drive the steam control valve to theclosed position and initiate the normal shut-down sequence including dilution cycle. Thedisplay shall indicate that the machine is in

the dilution cycle.2. Safeties:

a. Unit shall automatically shut down when anyof the following conditions occur. In addi-tion, the chiller goes into alarm mode andindicates the reason for the shutdown on thechiller data display.

1) Absorbent pump motor overload.2) Refrigerant pump motor overload.3) Purge pump motor overload.4) Low chilled water temperature.5) Low cooling water temperature.6) Generator high temperature.

7) Generator high pressure.8) Loss of chilled water flow.9) (Optional) loss of cooling water flow.

10) Loss of chilled water pump interlock.11) Loss of cooling water pump interlock.12) High solution concentration.

b. The control system shall detect conditionsthat approach protective limits and take self-corrective action prior to an alarm occur-ring. The system shall automatically reducechiller capacity when any of the followingparameters are outside their normal operat-ing range:

1) Low cooling water inlet temperature.2) High cooling water inlet temperature.3) High solution concentration.

3. Diagnostics and Service:

a. The chiller control system shall execute aseries of self-diagnostic checks wheneverpower is first turned on to determine if tem-peratures are within pre-start limits, therebyallowing start-up to proceed. If any of thelimits are exceeded, an alert message will bedisplayed, informing the operator of thecause of the pre-start alert.

Guide specifications (cont)

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b. The control system shall provide an alarmdisplay on the front of the panel for any sen-sor that has failed. These sensors include:

1) Chilled water inlet temperature.2) Chilled water outlet temperature.3) Cooling water inlet temperature.4) Cooling water outlet temperature.5) Cooling water intermediate temperature.6) Condenser temperature.7) Refrigerant temperature.8) Diluted solution temperature.9) Generator temperature.

10) Purge tank pressure.11) Steam condensate temperature.

c. The chiller controls shall display mainte-nance messages and alarms when efficientoperation of the chiller is in jeopardy orwhen immediate attention is necessary.When operating conditions are predicted tobe problematic, the following messages shallbe displayed on the panel:

1) Purge tank high pressure.2) Cooling water tubes excessive fouling.3) Cooling water high temperature.4) Power failure.

4. Building Control System Interface:

The chiller control system shall have the abilityto interface and communicate directly to thebuilding control system with additional field-installed hardware and software.

G. Electrical Requirements:

1. Power supply to the unit shall be 3 ph, 60 Hzwith voltages of 208 or 460 as specified on theequipment schedule. A control transformershall provide 24-volt single-phase secondarypower for the control panel.

2. Contractor/owner shall supply and installthe electrical power line and all auxiliary electri-cal protection devices per local code require-ments and as indicated necessary by the chillermanufacturer.

3. Contractor/owner shall supply and install elec-trical wiring and devices required to interfacethe chiller controls with the building controlssystem if applicable.

H. Piping Requirements:

1. Piping and instrumentation for the chilledwater, cooling water, steam and condensatepiping shall be supplied and installed by thecontractor/owner.

2. Absorber-condenser crossover piping shall befurnished by the chiller manufacturer.

3. Cooling water flow switch shall be supplied byeither the chiller manufacturer or the contrac-tor/owner.

4. Piping from the rupture disk shall be providedand installed by the contractor/owner andpiped in accordance with the chiller manufac-

turers written instructions and any local juris-dictional requirements.

I. Thermal Insulation:

Insulation of the evaporator, refrigerant pumpsump, piping and chilled water headers, in additionto any hot surfaces shall be field supplied andinstalled on the machine. Chiller manufacturer shal

recommend the material and specify surface area tobe insulated.

J. Sound Level:

The overall sound pressure level of the chiller shalnot exceed 80 dbA when measured per ARI Stan-dard 575-1994.

K. Start-up:

1. Unit manufacturer shall provide a factorytrained service representative, employed by thechiller manufacturer, to perform and/or super-vise chiller pressure test (when required), chargechiller with refrigerant (water) and lithiumbromide solution, place unit into operation, and

calibrate all controls in accordance with themanufacturers written start-up, operating andmaintenance instructions.

2. After unit start-up has been performed, the samefactory representative shall be available for aperiod of instruction not to exceed 4 hours toinstruct the owner's personnel in the properstart-up, operating and maintenance procedures

3. Manufacturer shall provide the following documentation and literature:

a. Installation Instructions.

b. Start-Up, Operating and MaintenanceInstructions.

c. Dimensional Drawing.

d. Foundation Drawing.

e. Field Wiring Diagram.

L. Options and Accessories:

1. Marine Waterboxes:

Marine waterboxes with removable covers tofacilitate tube cleaning and maintenance shalbe furnished when specified on the equipmentschedule.

2. High-Pressure Waterboxes:

Waterboxes rated for 300 psig working pressure with removable covers shall be furnishedwhen specified on the equipment schedule.

3. Special Tubing:

Tubing of non-standard materials, geometry orwall thickness shall be provided when specifiedon the equipment schedule.

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4. Shipping Configuration:

Chiller shall ship either fully assembled or inmultiple pieces as specified on the equipmentschedule.

5. Victaulic Nozzle Connections:

Victaulic grooves shall be provided on allwaterbox nozzle connections when specified

on the equipment schedule.6. Cooling Water Flow Switch:

Cooling water flow switch, rated for either150 psig or 300 psig, shall be factory suppliedwhen specified on the equipment schedule.

7. Isolation Package:

A vibration isolation package consisting ofneoprene isolation pads shall be furnishedwhen specified on the equipment schedule.

8. Steam Control Valve (Electronic orPneumatic):

An accessory steam control valve shall be pro-

vided when specified on the equipmentschedule.

9. Thermometer Set:

A package of 5 adjustable angle thermometersshall be factory-supplied for field installationwhen specified on the equipment schedule.Each shall have a 9 in. scale with a workingrange of 0 F to 120 F and shall be equippedwith a -in. NPT brass well.

Guide specifications (cont)

Documents

16tj-1pd