Product Data EVERGREEN® 23XRV High-Efficiency Variable Speed Screw Chiller with FOXFIRE™ Compression Technology 50/60 Hz HFC-134a 300 to 550 Nominal Tons (1055 to 1934 Nominal kW) ® Carrier’s Evergreen® 23XRV chiller is the world’s first integrated variable speed, water-cooled, screw chiller. It incorporates significant breakthroughs in water-cooled chiller technology to provide excellent reliability and achieve superior efficiencies at true operating conditions without compromising the environment.
Features/Benefits (cont) Variable speed capacity control eliminates slide valves, their associated losses, and their potential failure modes. Component count (both rotating and total) has been minimized assuring maximum reliability under a wide range of operating conditions. High efficiency Per AHRI 550/590, chillers operate at design conditions less than one percent of the time. As a result, superior part load efficiency is required for today’s chilled water applications.
• Machine room cooling requirements associated with air-cooled motors, which dissipate heat to the mechanical room. • High noise levels common with aircooled motors, which radiate noise to the machine room and adjacent areas. • Shaft alignment problems that occur with open-drive designs during startup and operation, when equipment temperature variations cause thermal expansion.
Features/Benefits (cont) feature also allows the machine to operate at reduced capacity, rather than shut down, when key safety limits are approached. Chilled liquid reset — Reset can be accomplished manually or automatically from the building management system. For a given capacity, reset allows operation at slower compressor speeds, saving energy when warmer chilled liquid can be used. Demand limiting — This feature limits the power draw of the chiller during peak loading conditions.
Physical data 23XRV COMPRESSOR AND MOTOR WEIGHTS ENGLISH MOTOR SIZE Total Compressor Weight (lb) Stator Weight (lb) 4866 441 P,Q,R,S, T,U,V SI Rotor Weight (lb) Motor Terminal Cover (lb) Compressor Weight (kg) Stator Weight (kg) Rotor Weight (kg) Motor Terminal Cover (kg) 229 46 2207 200 104 21 COMPONENT WEIGHTS FRAME 3 HEAT EXCHANGER lb kg 70 32 179 81 747 339 1650 749 700 318 542 246 COMPONENT Isolation Valves Suction Elbow Discharge Elbow/Muffler Control Center/VFD Vaporizer and Oil Su
Physical data (cont) ADDITIONAL WEIGHTS FOR 23XRV MARINE WATERBOXES* 150 psig (1034 kPa) MARINE WATERBOXES FRAME NUMBER OF PASSES 1 and 3 2 1 and 3 2 1 and 3 2 3 4 5 ENGLISH (lb) Cooler Condenser Rigging Wgt Liquid Wgt Rigging Wgt Liquid Wgt 730 700 N/A N/A 365 350 365 350 1888 908 N/A N/A 944 452 989 452 2445 1019 N/A N/A 1223 510 1195 499 SI (kg) Cooler Condenser Rigging Wgt Liquid Wgt Rigging Wgt Liquid Wgt 331 318 N/A N/A 166 159 166 159 856 412 N/A N/A 428 205 449 205 1109 462 N/A N/A 555 231 542
Options and accessories ITEM .028 or .035 in. (0.711 or 0.889 mm) Internally/Externally Enhanced Copper Tubing — Cooler/Condenser .028 or .035 in. (0.711 or 0.889 mm) Internally/Externally Enhanced Cupronickel Tubing — Condenser .028 or .035 in. (0.711 or 0.889 mm) Smooth Bore/Externally Enhanced Copper Tubing — Cooler/Condenser .028 or .035 in. (0.711 or 0.
Dimensions 23XRV DIMENSIONS TUBE REMOVAL SPACE FOR EITHER END SIZES 30-32, 40-42 50-52 14’-3” (4343 mm) SIZES 35-37, 45-47 55-57 14’-0” (4267 mm) MOTOR SERVICE CLEARANCE 1’-10” (559 mm) FRAME R COMPRESSOR 3’-0” (915mm) RECOMMENDED OVERHEAD SERVICE CLEARANCE a23-1646 C 2’ MIN (610 mm) B (WIDEST POINT) A 4’ MIN (1219 mm) SERVICE AREA 4’-10” MIN (1475 mm) 23XRV DIMENSIONS (NOZZLE-IN-HEAD WATERBOX) HEAT EXCHANGER SIZE 30 to 32 1 Pass ft-in.
Performance data NOZZLE SIZE NOZZLE SIZE (in.
Electrical data VFD FRAME SIZES FRAME SIZE AA BA BB CC MAX INPUT CURRENT* 440 520 520 608 MAX OUTPUT CURRENT* 442 442 520 608 *Maximum limits only. Additional application limits apply that will reduce these ampacities. AUXILIARY RATINGS* VOLTAGE MAXIMUM PROTECTIVE DEVICE SIZE (AMPS) WATTS Controls, Oil Pump And Heater Circuit† Oil Pump Oil Sump Heater 115 115 115 15 1.48 4.35 — 130 500 Oil Vaporizer Heater Circuit† Oil Vaporizer Heater 115 115 15 13 — 1500 ITEM *Factory wired to VFD.
Controls Microprocessor controls Microprocessor controls provide the safety, interlock, capacity control, indications and accessibility necessary to operate the chiller in a safe and efficient manner. Control system The microprocessor control on each Carrier chiller is factory-mounted, factory-wired, and factory-tested to ensure machine protection and efficient capacity control.
Controls (cont) CONTROL PANEL DISPLAY (Front View) ICVC ENGLISH DISPLAY IN SI UNITS CONTROL PANEL DISPLAY (Front View) ICVC CHINESE DISPLAY IN METRIC UNITS 12
a23-1649 13 CCM — BLACK WHITE RED GROUND LEGEND Chiller Control Module Factory Wiring Field Wiring DRAIN WIRE BLACK WHITE RED BLACK WHITE RED DRAIN WIRE NOTE: Field-supplied terminal strip must be located in control panel.
Controls (cont) Control sequence CONTROL SEQUENCE 0 0 MACHINE SAFETIES, EVAPORATOR PUMP CONDENSER WATER PUMP WATER FLOWS CHILLED WATER TEMP, TOWER FAN CONTROL OIL PUMP OIL PRESSURE VERIFIED VDF FAULT TEST COMPRESSOR, PHASE REVERSAL, COMPRESSOR AND SERVICE ONTIME COMPRESSOR RUNNING RAMP VDF TO TARGET SPEED 15-MINUTE START-TO-START TIMER 1-MINUTE STOP-T O-START TIMER (SOFTWARE VERSION 13) A B C TIME 0 A D E F G H I J L O/A K — Phase reversal monitored — START INITIATED: Pre-start checks are
Typical piping and wiring 23XRV CHILLER 1 1 7 6 1 1 MAIN COMPRESSOR MOTOR POWER 8 TO CHILLED LIQUID PUMP TO CONDENSER LIQUID PUMP TO COOLING TOWER FAN 2 9 TO COOLING TOWER 9 3 3 FROM COOLING TOWER TO LOAD FROM LOAD DRAIN 5 4 1 2 3 4 5 6 7 8 9 — — — — — — — — — LEGEND Disconnect Unit-Mounted VFD/Control Center Pressure Gages Chilled Liquid Pump Condenser Liquid Pump Chilled Liquid Pump Starter Condenser Liquid Pump Starter Cooling Tower Fan Starter Vents Piping Control Wiring Power Wiring
Control wiring schematic 23XRV COMPONENT ARRANGEMENT CCM CCN ICVC GND 16 — — — — LEGEND Chiller Control Module Carrier Comfort Network® International Chiller Visual Controller Ground
Application data 23XRV MACHINE FOOTPRINT A D C CL VESSELS CL ACCESSORY SOLEPLATE COND. B TYP. 0’-3” [76.2mm] F CL COOLER a23-1650 E X X* G 0’-01/2” [13mm] TYP. Y* Y *See detail on page 18. 23XRV HEAT EXCHANGER SIZE 30-32 35-37 40-42 45-47 50-52 55-57 DIMENSIONS (ft-in.
Application data (cont) 23XRV ISOLATION WITH ACCESSORY SOLEPLATE PACKAGE STANDARD ISOLATION TYPICAL ISOLATION ELASTOMERIC PAD VIEW Y-Y ISOLATION WITH ISOLATION PACKAGE ONLY (STANDARD) NOTE: Isolation package includes 4 elastomeric pads. a23-1647 ACCESSORY SOLEPLATE DETAIL VIEW X-X NOTES: 1. Dimensions in ( ) are in millimeters. 2. Accessory soleplate package includes 4 soleplates, 16 jacking screws and leveling pads. Requires isolation package. 3. Jacking screws to be removed after grout has set. 4.
23XRV NOZZLE ARRANGEMENTS NOZZLE-IN-HEAD WATERBOXES DISCHARGE END SUCTION END FRAME 3 12 3 9 6 5 11 2 8 4 10 1 7 DISCHARGE END SUCTION END FRAMES 4 AND 5 NOZZLE ARRANGEMENT CODES FOR ALL 23XRV NOZZLE-IN-HEAD WATERBOXES PASS 1 2 3 In 8 5 7 4 7 4 COOLER WATERBOXES Arrangement Out Code* 5 A 8 B 9 C 6 D 6 E 9 F PASS 1 2 3 In 11 2 10 1 10 1 CONDENSER WATERBOXES Arrangement Out Code* 2 P 11 Q 12 R 3 S 3 T 12 U *Refer to certified drawings.
Application data (cont) 23XRV NOZZLE ARRANGEMENTS (cont) MARINE WATERBOXES DISCHARGE END SUCTION END FRAME 3 NOZZLE ARRANGEMENT CODES PASS In 8 1 2 3 COOLER WATERBOXES Arrangement Out Code 5 A 5 8 B 7 9 C 4 6 D 7 6 E 4 9 F PASS CONDENSER WATERBOXES Arrangement Out Code — — In — 1 2 3 — — — 10 12 R 1 3 S — — — — — — DISCHARGE END SUCTION END FRAMES 4, AND 5 NOZZLE ARRANGEMENT CODES PASS 1 2 3 20 In 9 COOLER WATERBOXES Arrangement Out Code 6 A 6 9 B 7 9 C 4
23XRV WATERBOX NOZZLE SIZES (Nozzle-In-Head and Marine Waterboxes FRAME SIZE PRESSURE psig (kPa) 3 150/300 (1034/2068) 4 150/300 (1034/2068) 5 150/300 (1034/2068) NOMINAL PIPE SIZE (in.) Cooler Condenser 10 10 8 8 6 6 10 10 8 8 6 6 10 10 8 10 6 8 PASS 1 2 3 1 2 3 1 2 3 ACTUAL PIPE ID (in.) Cooler Condenser 10.020 10.020 7.981 7.981 6.065 6.065 10.020 10.020 7.981 7.981 6.065 6.065 10.020 10.020 7.981 10.020 6.065 7.
Application data (cont) Vent and drain connections Nozzle-in-head waterboxes have vent and drain connections on covers. Marine waterboxes have vent and drain connections on waterbox shells. Provide high points of the chiller piping system with vents and the low points with drains. If shutoff valves are provided in the main liquid pipes near the unit, a minimal amount of system liquid is lost when the heat exchangers are drained.
Insulation conforms with Underwriters Laboratories (UL) Standard 94, Classification 94 HF-1. Both the 1/2-in. foam and the 3/ -in. vinyl layer will pass flammability test method 16 MVSS 302. Field insulation — As indicated in the Condensation vs Relative Humidity table, the factory insulation provides excellent protection against condensation under most operating conditions. If temperatures in the equipment area exceed the maximum design conditions, extra insulation is recommended.
Guide specifications Variable Speed Screw Chiller HVAC Guide Specifications Size Range: 300 to 550 Tons (1055 to 1934 kW) Nominal Carrier Model Number: 23XRV Part 1 — General 1.01 SYSTEM DESCRIPTION A. Microprocessor-controlled liquid chiller shall use a semi-hermetic screw compressor using refrigerant HFC-134a only. Chiller refrigerant shall not have a planned phase out date. B.
D. Unit shall be shipped with firmly attached labels that indicate name of manufacturer, chiller model number, chiller serial number, and refrigerant used. E. If the unit is to be exported, the manufacturer shall provide sufficient protection against sea water corrosion, making the unit suitable for shipment in a standard open top ocean shipping container. F. Chiller and starter shall be stored indoors, protected from construction dirt and moisture.
Guide specifications (cont) equipment to dissipate the motor heat as per the following formula: Btuh = (FLkW motor) (0.05) (3413) Btuh = (FLkW motor) (171) and, alternately Tons = Btuh/12,000 The additional piping, valves, air-handling equipment, insulation, wiring, switchgear changes, ductwork, and coordination with other trades shall be the responsibility of the mechanical contractor.
7. 8. 9. 10. input terminals as the point of common coupling (PCC). b. The VFD full load efficiency shall meet or exceed 97% at 100% VFD rated ampacity. c. Active rectifier shall regulate unity displacement power factor to 0.99 or higher. d. Voltage boost capability to provide full motor voltage at reduced line voltage conditions. e. The VFD shall feature soft start, linear acceleration, and coast to stop capabilities. f. Base motor frequency shall permit motor to be utilized at nameplate voltage.
Guide specifications (cont) liquid refrigerant to a reduced temperature, thereby increasing the refrigeration cycle efficiency. F. Refrigerant Flow Control: To improve part load efficiency, liquid refrigerant shall be metered from the condenser to the cooler using a float-type metering valve to maintain the proper liquid level of refrigerant in the heat exchangers under both full and part load operating conditions.
displayed informing the operator that the chiller is operating in ramp loading mode. l. Chilled Water Reset: The control center shall allow reset of the chilled water temperature set point based on any one of the following criteria: 1) Chilled water reset based on an external 4 to 20 mA signal. 2) Chilled water reset based on a remote temperature sensor (such as outdoor air). 3) Chilled water reset based on water temperature rise across the evaporator. m.
Guide specifications (cont) H. I. J. K. L. 30 manual rotation of the lead chiller and a staggered restart of the chillers after a power failure. The lead/lag system shall include load balancing if configured to do so. Electrical Requirements: 1. Electrical contractor shall supply and install main electrical power line, disconnect switches, circuit breakers, and electrical protection devices per local code requirements and as indicated necessary by the chiller manufacturer. 2.
11. Cooler and Condenser Tubes: Contact a local Carrier Representative for other tube offerings. 12. Cooler and Condenser Passes: Unit manufacturer shall provide the cooler and/ or condenser with 1, 2 or 3 pass configuration on the water side. 13. Nozzle-In-Head, 300 psig (2068 kPa): Unit manufacturer shall furnish nozzle-in-head style waterboxes on the cooler and/or condenser rated at 300 psig (2068 kPa). 14.
Carrier Corporation • Syracuse, New York 13221 910 5-10 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Section 9 Pg 32 Catalog No. 04-52230002-01 Printed in U.S.A.
