Carrier 23XL User Manual

The 23XL screw chiller provides theperformance and reliability of acentrifugal class machine by usingadvanced engineering technology.Optimized for low

Options and accessoriesITEM OPTION* ACCESSORY†Shipped Factory Charged with Refrigerant XShipped Factory Charged with Nitrogen XOne, 2, or 3 Pass Coole

Machine componentsFRONT VIEW1—Power Panel2—Local Interface Display (LID) Control Center3—ASME (American Society of MechanicalEngineers) Nameplate, Coo

Machine components (cont)FRONT VIEW1—Compressor Nameplate2—Power Panel3—Local Interface Display (LID) Control Center4—ASME (American Society of Mechan

Physical dataNOMINALCAPACITYTONS (kW)COOLER CONDENSERECONOMIZERCOMPRESSORUNITMOUNTEDSTARTERTOTALDRY WEIGHTREFRIGERANTWEIGHT*TOTALOPERATINGWEIGHT60 Hz

Physical data (cont)COMPRESSOR WEIGHTS23XLUNITCOMPRESSOR SIZEASSEMBLYlb kgFrame 1C2 2270 1029C4 2300 1043Frame 2 C6 2400 1088Frame 4D4 3300 1497D6 340

WATERBOX COVER WEIGHTS (FRAME 1 AND 2 CHILLERS)*HEAT EXCHANGERWATERBOXDESCRIPTIONPSI(kPa)FRAME 1 FRAME 2lbs kg lbs kgCooler orCondenserNIH, 1 Pass150(

Dimensions23XL FRAME 1 AND 2 CHILLERSNOTES:1. Service access should be provided per ANSI/ASHRAE 15 (American National Standards Institute/American Soc

23XL FRAME 4 CHILLERSNOTES:1. For flanged waterbox nozzles, refer to the certified drawings for length addition measurements.2. Service access should be

Electrical dataCOMPRESSORMOTORELECTRICALCHARACTERISTICS60 Hz MOTORS 50 Hz MOTORSLow Voltage Low VoltageSize VI TypeMax208 V 230 V 400 V 460 V 575 VMax

Performance dataComputerized ratingsBecauseof the large number ofavailableCarrier 23XL ScrewChiller component combinations and the wide variability in

Variable refrigerant meteringeliminates inefficient vapor bypass andprovides superior part-load perfor-mance when compared to fixed orificemetering desig

Application data (cont)CHILLER FOOTPRINT (FRAME 1 AND 2 CHILLERS)DIMENSIONHEAT EXCHANGER SIZE10 or 11 20 or 21ft-in. mm ft-in. mmA 4-51⁄41353 4-71⁄414

STANDARD ISOLATIONVIEW B-BNOTES:1. Dimensions in ( ) are in millimeters.2. Isolation package includes 4 shear flex pads.ACCESSORY ISOLATIONHRS — Hot Ro

Application data (cont)FRAME 1 AND 2 NOZZLE ARRANGEMENTSCOOLER AND CONDENSER NOZZLE ARRANGEMENTSNOZZLE ARRANGEMENT CODESCooler CondenserPass In Out Co

FRAME 4 NOZZLE ARRANGEMENTSCOOLER AND CONDENSER NOZZLE ARRANGEMENTSNOZZLE ARRANGEMENT CODESCooler CondenserPass In Out Code Pass In Out Code185 A111 2

Application data (cont)Vent and drain connectionsAll vents and drain connections are found in the waterboxcovers. Connection size is3⁄4-in. FPT.Provid

InsulationINSULATION REQUIREMENTSCOMPONENT FRAME FT2M2Cooler1 60 5.572 66 6.134 113 10.49Compressor1, 2 35 3.254 41 3.81Economizer1, 2 17 1.584 28 2.6

Application data (cont)INSULATION AREA FOR FRAME 1 AND 2 CHILLERSINSULATION AREA FOR FRAME 4 CHILLERS26

FLOOR CONTACT SURFACE LOADINGHEAT EXCHANGER FRAME PAD POSITIONMINIMUM MAXIMUMlb kg lb kg1A 2970 1347 3310 1501B 2740 1243 3200 1451C 2270 1029 2630 11

ControlsMicroprocessor controlsMicroprocessor controls provide the safety, interlock, ca-pacitycontrol and indications necessaryto operate the chiller

MICROPROCESSOR CONTROL CENTERSOFTKEYS29

Features/Benefits (cont)Automatic two chiller lead/lagcapability provides integral standbycontrols.A 16 line by 40 character LCDdisplay offers ‘‘all in

Controls (cont)CONTROL CENTER (FRONT VIEW), WITH OPTIONSLEGEND1—Local Interface Device (LID)Input/Output Interface Panel Display2—Processor Module (PS

TYPICAL LOCAL INTERFACE DEVICE (LID) DISPLAY SCREENS (cont)Schedule Screen — A user established occupancy schedule canbe easily configured for your par

Controls (cont)TYPICAL LOCAL INTERFACE DEVICE (LID) DISPLAY SCREENS (cont)The Control Test Screen — This screen allows access to the vari-ous control

Control sequenceTo start: Push Start button — Start initiated; all safetiesare checked to see that they are satisfied (if one is not, anindication of t

Typical piping and wiring23XL CHILLER WITH FREE-STANDING STARTERLEGEND1—Chilled Water Pump Starter2—Condenser Water Pump Starter3—Cooling Tower Fan St

23XL CHILLER WITH OPTIONAL UNIT-MOUNTED STARTERLEGEND1—Chilled Water Pump Starter2—Condenser Water Pump Starter3—Cooling Tower Fan Starter4—Chilled Wa

Typical field wiring23XL TYPICAL FIELD WIRING WITH FREE-STANDING STARTER (FRAME 1 AND 2 CHILLERS)IMPORTANT: Wiring shown is typical and not intended to

23XL TYPICAL FIELD WIRING WITH FREE-STANDING STARTER (FRAME 1 AND 2 CHILLERS) (cont)LEGENDLL — Compressor Motor Starter TerminalsMCM — Thousand Circul

Typical field wiring (cont)23XL TYPICAL FIELD WIRING WITH OPTIONAL UNIT-MOUNTED STARTER (FRAME 1 AND 2 CHILLERS)IMPORTANT: Wiring shown is typical and

23XL TYPICAL FIELD WIRING WITH OPTIONAL UNIT-MOUNTED STARTER (FRAME 1 AND 2 CHILLERS) (cont)LEGENDMCM — Thousand Circular MilsNEMA — National Electric

Model number nomenclatureLEGENDVI — Volumetric IndexUnderwriters’LaboratoryCanadaASME‘U‘ StampUnderwriters’LaboratoriesARI (Air Conditioningand Refrig

Guide specificationsPackaged Hermetic Screw Liquid ChillerSizeRange:150to360Tons(530to1270kW)—60Hz130to300Tons(460to1060kW)—50HzCarrier Model Number: 2

7. Compressor safeties shall include high compres-sor discharge temperature, high motor windingtemperature, low oil pressure, reverse rotation,and hig

Guide specifications (cont)2. Tubing shall be copper, high-efficiency type, withintegralinternal andexternal enhancement. Tubesshall be nominal3⁄4-in. O

d. Uponrequestto startthe compressor,thecon-trol system shall start the chilled water pump,condenser water pumps, and tower fans, ifappropriate, and v

Guide specifications (cont)one year in advance (month, day, and dura-tionofdays).Display of the occupancy sched-ules shall be viewable on the LCD scree

c. A slide valve test shall energize the increaseand decrease slide valve solenoids to checkfor proper operation. The controls shall re-questmanualope

Guide specifications (cont)J. Insulation:1. Chilled water piping and cooler waterboxes shallbe insulated by the mechanical contractor.2. Factory instal

Carrier Corporation • Syracuse, New York 13221 11-96Manufacturer reserves the right to discontinue, or change at any time, specifications or designs wi

Features/Benefits (cont)23XL HERMETIC SCREW LIQUID CHILLER (FRAME 1 AND 2 CHILLERS)Technologically advanced chillers designed to answertoday’s environm

Feature/Benefits (cont)23XL HERMETIC SCREW LIQUID CHILLER (FRAME 4 CHILLERS)Technologically advanced chillers designed to answertoday’s environmental a

23XL Refrigeration CycleThe compressor continuously drawsrefrigerant vapor from the cooler at arate determined by the position ofthe capacity control

Features/Benefits (cont)TYPICAL 23XL REFRIGERATION CYCLE ECONOMIZED CHILLERSTYPICAL 23XL REFRIGERATION CYCLE NON-ECONOMIZED CHILLERS8

SCREW COMPRESSOR COMPONENTS1—Control Oil Lines2—Capacity Control Solenoid Valve3—Discharge Bearing Assemblies4—Male Rotor5—Semi-Hermetic Motor6—Female