York corporation ycal air cooled scroll chillers

#York corporation ycal air cooled scroll chillers code

Liquid Crystal Display (LCD) with Light Emitting Diode (LED) backlighting for outdoor viewing: Two display lines Twenty characters per lineД¬olor coded 12-button non-tactile keypad with sections for: DISPLAY/PRINT of typical information: Chilled liquid temperatures Ambient temperature System pressures (each circuit) Operating hours and starts (each compressor) Print calls up to the liquid crystal display: Operating data for the systems History of fault shutdown data for up to the last six faultДЄn RS-232 port, in conjunction with this press-to-print button, is provided to permit the capability of hard copy print-outs via a separate printer (by others).Д®NTRY section to: ENTER setpoints or modify system values They feature ball bearings that are double-sealed and permanently lubri- cated.ДЄll controls are contained in a NEMA 3R/12 (and equiva- lent to IP55*) cabinet with hinged outer door and include: Motors вЂ“ The fan motors are Totally Enclosed Air-Over, squirrel-cage type, current protected. The fan guards are constructed of heavy-gauge, rust-resistant, PVC (polyvinyl chloride)-coated steel wire. They are directly driven, and positioned for vertical air discharge. They are designed for maximum efficiency and are statically and dynamically balanced for vibration-free operation. Low Sound Fans вЂ“ The condenser fans are composed of corrosion resistant aluminum hub and composite blades molded into a low noise airfoil section. The design working pressure of the coil is 650 PSIG (45 barg). The cooler is covered with 3/4вЂќ (19mm) flexible, closed-cell, foam insulation (Kв‰€0.25).ДЄ strainer with a mesh size between 40 mesh (0.5 and 1.5 mm) is required upstream of the heat exchanger to prevent clogging.Д¬ONDENSER Coils вЂ“ Fin and tube condenser coils of seamless, inter- nally-enhanced, high-condensing-coefficient, corrosion resistant copper tubes are arranged in staggered rows, mechanically expanded into aluminum fins. The heater provides freeze protection for the cooler down to -20вЏ (-29вЊ) ambient. The cooler is equipped with a heater controlled by a sepa- rate thermostat. Water inlet and outlet connections are grooved for compatibility with factory supplied ANSI/AWWA C-606 connections. Installing contractor must include ac-Д¬ommodations in the chilled water piping to allow proper drainage and venting of the heat exchanger. Compressor crankcase heaters are also included for extra protection against liquid migration.Д¬OOLER Brazed plate heat exchangers are UL (Underwriters Laboratories) listed. A large internal volume and oil reservoir provides greater liquid tolerance. All rotating parts are statically and dynamically balanced. The compressors incorporate a scroll design that is compliant in both the axial and radial direction.

#York corporation ycal air cooled scroll chillers code

Units are designed in accordance with NFPA 70 (National Electric Code), ASHRAE/ANSI 15 Safety code for mechanical refrig- eration, ASME, Listed and labeled with Intertek Test- ing Services (ETL) and rated in accordance with the latest version of ARI Standard 550/590.Д¬OMPRESSORS The chiller has suction-gas cooled, hermetic, scroll com- pressors. Unit also includes service isolation valves as standard. Corrosion resistant wire mesh panels are added to protect the con- denser coil from incidental damage and restrict unauthor- ized access to internal components. The steel is coated with baked-on powder paint, which, when subjected to ASTM B117 1000 hour, salt spray testing, yields a minimum ASTM 1654 rating of вЂњ6вЂќ. The unit structure is heavy-gauge, galvanized steel. After assembly, a complete operational test is performed with water flowing through the cooler to assure that the refrigeration circuit operates correctly. The unit is pressure-tested, evacuated, and fully charged with Refrigerant-410A and includes an initial oil charge. Specification GENERAL The 15 - 65 Ton (53 - 218 kW) YCAL models are shipped complete from the factory ready for installation and use. Introduction Model YCAL Air-Cooled Scroll Compressor Liquid Chillers Style E Each unit includes hermetic scroll compressors, a liquid cooler, air cooled condenser, a charge of refrigerant R-410A, and a weather resistant microprocessor control center, all mounted on a rugged, formed-steel base. They are completely self-contained and are designed for outdoor (roof or ground level) installation.

YORK Air-Cooled Scroll Chillers provide chilled water for all air conditioning applications using cen- tral station air handling or terminal units. Products are produced at a fac i l i t y whose qua l i t y - management systems are ISO9001 certified.