York 28971AR manual Specifications, Complete Factory Package, SEMI-HERMETIC York Screw Compressors

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Specifications

These YORK air cooled chillers are shipped as a com- plete factory package. Each unit is completely as- sembled with all interconnecting refrigerant piping and internal wiring, ready for field installation:

COMPLETE FACTORY PACKAGE

•Each compressor is installed on its own indepen- dent refrigerant circuit, which is factory pressure tested, evacuated, then fully charged with refriger- ant and oil.

•After assembly, an operational test is performed with water flowing through the cooler to ensure each cir- cuit operates correctly.

•Cabinet and base frame are constructed of formed heavy gauge, galvanized steel.

•All external structural parts are covered with archi- tecturally neutral “Desert Sand” (Munsell #10YR6- 2) baked-on enamel powder paint. This provides a finish which, when subjected to ASTM B117, 500 hour, 5% salt spray conditions, shows breakdown

of less than 1/8" either side of a scribed line (equiva- lent to ASTM D1654 rating of “6”).

•Design is in accordance with applicable sections of ASME Pressure Vessel Code, NFPA 70 (National Electrical Code), U.L. and cU.L. Standards , and ASHRAE/ANSI-15 Safety Code for Mechanical Re- frigeration.

•Units are Rated and Certified in accordance with ARI Standard 550/590-98.

•All exposed power wiring routed through liquid-tight, non-metallic conduit.

SEMI-HERMETIC YORK SCREW COMPRESSORS

•An ideal synergy of expertise, sister division YORK Refrigeration Compressor Engineers as integral members on YORK Engineered Systems’ Chiller De- sign Team, has resulted in a world class compressor with unequaled performance.

•Continuous function, microprocessor controlled, 3- way proportional Capacity Control Valve provides regulated output pressure independent of valve input pressure for a stable, smooth, and precise match of compressor capacity to cooling load to 10% of chiller capacity.

•Automatic spring return of capacity control valve to minimum load position ensures compressor starting at minimum motor load. Internal discharge check to prevent rotor backspin upon shut-down.

•Acoustically tuned, internal discharge gas muffler eliminates objectionable noise at the source, while optimizing flow for maximum performance.

•Reliable suction gas cooled, high efficiency, acces- sible hermetic motor with APT2000 type magnet wire and redundant overload protection using both ther- mistor and current overload protection.

•Suction gas screen and serviceable, 0.5 micron full flow oil filter within the compressor housing.

•Some models equipped with tuned port economizer as appropriate for enhanced capacity and superior efficiency.

•Cast iron compressor housing precisely machined for optimal clearances and superb efficiency. Entire com- pressor, from suction to discharge has a Design Working Pressure of 450 PSIG (31 bar).

•350W compressor body cartridge heater.

CONDENSER SECTION

•Condenser Fans with low noise, full airfoil cross sec- tion for maximum efficiency, statically and dynami- cally balanced for low vibration operation, and posi- tioned in extended, formed steel orifices for low sound and maximum efficiency.

•Condenser fan motors are high efficiency, direct drive, 6-pole, 3-phase, Class-“F”, current overload pro- tected, totally enclosed (TEAO) type with double sealed, permanently lubricated, ball bearings.

•Fin and tube condenser coils of seamless, internally enhanced, high condensing coefficient, corrosion re- sistant copper tubes arranged in staggered rows and mechanically bonded to corrosion resistant aluminum alloy fins with full height fin collars. Design working pressure is 450 PSIG (31 bar).

EVAPORATOR

•High efficiency, direct-expansion type cooler with re- frigerant in tubes and chilled liquid through the baffled shell. Independent circuits provided for each com- pressor.

•Design working pressure of the shell waterside is 150 PSIG (10.3 bar), and 350 PSIG (24 bar) for the refrigerant side. Constructed and tested in accor- dance with applicable sections of ASME Pressure Vessel Code, Section VIII, Division (1). Water side exempt per paragraph U-1, (c), (6). Other codes, such as German TÜ V, also available for global cus- tomers.

•Water baffles fabricated from galvanized steel to resist corrosion. Removable heads allow access to internally-enhanced, seamless, copper tubes. Wa- ter vent and drain connections included.

•Cooler equipped with thermostatically controlled heater for protection to -20°F (-29°C) ambient, and insulated with ¾ " (19mm) flexible, closed-cell foam (k = 0.25).

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YORK INTERNATIONAL

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Contents Millennium Table of Contents Introduction York Millennium Air Cooled Screw Liquid ChillersSpecifications Complete Factory PackageSEMI-HERMETIC York Screw Compressors Condenser SectionRefrigerant Circuit Microprocessor ControlsPower Panel Accessories and Options DX Cooler Options Vibration IsolationHigh Static Fans Sound Reduction OptionsTemperatures and Flows Temperature and FlowsSI Units Water Pressure Drop English UnitsSI Units Pressure Drop kPaRatings English Units Model YCAS0110EC Iplv =Model YCAS0090EC Model YCAS0100ECModel YCAS0110EC 100 105 110 115 120 125Model YCAS0120EC Iplv = Model YCAS0130EC Model YCAS0120ECModel YCAS0140EC Model YCAS0150EC Iplv = Model YCAS0160EC Model YCAS0150ECModel YCAS0170EC Model YCAS0180EC Iplv = Model YCAS0200EC Model YCAS0180ECModel YCAS0210EC Model YCAS0230EC Iplv = Model YCAS0250EC Model YCAS0230ECModel YCAS0270EC Model YCAS0300EC Iplv = Model YCAS0330EC Model YCAS0300ECModel YCAS0360EC Model YCAS0400EC Iplv = Model YCAS0400EC Model YCAS0440ECRatings SI Units Model YCAS0120EC YCAS0160EC YCAS0170ECYCAS0180EC Model YCAS0200ECModel YCAS0230EC Model YCAS0300EC Model YCAS0400EC Model YCAS0440EC Physical Data English UnitsCondenser Fans SI Units Refrig. Charge, R-22,Ckt.-1 / Ckt.-2, kg Dimensions YCAS0090 0100EC English View A-ACenter of Gravity Alum 0090 73.7 41.9 38.4 0100 73.8 41.7 30.01Dimensions YCAS0090 0100EC SI 0090 1872.9 1063.3 0100 1875.4 1059.8Dimensions YCAS0110 0120EC English 0120 82.8 43.2 38.9Dimensions YCAS0110 0120EC SI 1834.7 1095.7 0120 1837.0 1093.8Dimensions YCAS0130 0180 English 130 1500130 01400150 0160Dimensions YCAS0130 0180 SI 130 150 438 4572573.0 1127.8 960.1 Dimensions YCAS0200 0230 English 0210 02000230 Dimensions YCAS0200 0230 SI 0200 3032.8 965.20210 3032.8 0230 3032.8Dimensions YCAS0250 0270 English 16 Egde of Unit to Cooler Connection0250 141.6 33.8 0270 140.6 41.7 33.7 144.5 42.0 40.3Dimensions YCAS0250 0270 SI All dimensions are Mm unless otherwise noted1063 1030 0270 02501066 1023 Dimensions YCAS0300 0330 English 16 Edge of Unit to Cooler Connection0300 0330Dimensions YCAS0300 0330 SI 3911 1057 883 0300 3842 1058 876 0330Dimensions YCAS0360 English View A-A View C-C0360 197.3 44.0 33.2 0360 200.7 44.0 39.6Dimensions YCAS0360 SI 0360 5011 1117 844 5097 1005 Dimensions YCAS0400 0440 English 218.7 44.0 34.1 Dimensions YCAS0400 0440 SI 0400 0440Operating Weights Aluminum Fin Coils LbsIsolator Selection Aluminum Fin Coils Operating Weights Copper Fin Coils Copper FIN Coil Weight Distribution by Model LBS Ycas TotalIsolator Selection Copper Fin Coils Or RD-3 Isolator DetailsOr RD-4 AWMR-1-XXX CP-2-XXAWMR-2-XXX System #1 FIELD-SUPPLIED Wiring Electrical DataOPT. NF FLA See page 89 for Electrical Data footnotes MIN NF OVER-CURRENT Wire Range Data Ycas Chiller FIELD-SUPPLIED Wiring System #1 System #2 Model Volts Compressor Data Field Supplied Wiring LRA RLA Standard Optional NF FLA LRA RLA Electrical Notes RLA LRA QTY20A 30A Power Connection Options Style F 2 Compressor Power Wiring ConnectionsLD05550 Two Compressor Diagrams Control Power Wiring As Shown OnSee Note CB1 CB3 CB2 CB4 Typical Control Wiring 2-Compressor Units For Legend Refer to Bottom Application Data Unit LocationFoundation Chilled Liquid PipingGuide Specifications Heat Exchangers Refrigerant Circuit ComponentsControls Power Connection and Distribution 100 Part 3 Execution Installation 102 103 Proud Sponsor
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