YVAA Style A Air-Cooled Screw Compressor Liquid Chillers ...

1 FORM (915). Model YVAA. Air-Cooled Screw Compressor Liquid Chillers With Variable Speed Drive Style A. 150-500 Tons 525-1750 kW. 2 Compressor 50 and 60 Hz HFC-134a FORM (915). Nomenclature YVAA 021 3 A X X 46 A A. REFRIGERANT. HFC - 134a DEVELOPMENT LEVEL. VOLTAGE CODE. -17 = 208-3-60. -28 = 230-3-60. -40 = 380-3-60. -42 = 400-3-60. CONFIGURATION -46 = 460-3-60. Condenser Code -50 = 380-415-3-50. Evaporator Code -58 = 575-3-60. Compressor Code Condenser Fan &. Sound Kit Code FRAME. SIZE. UNIT TYPE. YORK chiller Air cooled Screw Design Series A. Approvals ASME Boiler and Pressure Vessel Code Section Vlll Division 1. AHRI Standard 550/590 and 551/591. UL 1995 Heating and Cooling Equipment ASHRAE 15 Safety Code for Mechanical Refrigeration ASHRAE Guideline 3 Reducing Emission of Halogenated Refrigerants in Refrigeration and Air-Conditioning Equipment and Systems National Electrical Code OSHA Occupational Safety and Health Act 2 JOHNSON CONTROLS.

2 FORM (915). Table of Contents 5. UNIT 6. YVAA CONTROL 9. ACCESSORIES AND OPTIONS*.. 11. REFRIGERANT FLOW 17. APPLICATION 18. PHYSICAL DATA - MICROCHANNEL COIL - ENGLISH (SI).. 24. PHYSICAL DATA - ROUND TUBE COIL .. 28. EVAPORATOR 30. 42. RIGGING HOLE 44. ISOLATOR 56. 72. ELECTRICAL 76. POWER 86. CUSTOMER CONTROL 88. CONTROL 90. GUIDE 92. SI METRIC 102. JOHNSON CONTROLS 3. FORM (915). THIS PAGE INTENTIONALLY LEFT BLANK. 4 JOHNSON CONTROLS. FORM (915). Introduction For over 140 years, Johnson Controls has raised the bar of chiller design and customer ex- pectations. We are raising the bar again with a leap forward in Air-Cooled chiller technology. Continuing the history of innovation in both Compressor design and Variable Speed Drive (VSD) technology, Johnson Controls proudly introduces the YORK YVAA.

3 In the past, the choice to use an Air-Cooled chiller came with the expectation of compromise, where simplicity of design and maintenance were traded for performance and efficiency. The new YVAA provides a better balance by combining the best of both - a high perfor- mance design that minimizes the total cost of ownership. YVAA Chillers are YORK YVAA model Air-Cooled Chillers provide superior performance. Higher efficiency heat Johnson Controls'. exchangers coupled with variable speed operation and smart controls elevate the system most efficient air- cooled Chillers . efficiency to a whole new level. The resulting benefit from YVAA Chillers is much greater The design offers a than the sum of its parts. lighter, smaller and quieter package that minimizes the Efficiency: Reduce your consumption installed costs YVAA Chillers are Johnson Controls' most efficient Air-Cooled Chillers .

4 The design offers a lighter, smaller and quieter package that minimizes the installed cost and maximizes usable building space. YVAA Chillers are simpler in design with easy access to service components for reliable operation and efficient maintenance. With up to a 40% improvement in real world efficiency versus current products, YVAA sets the new standards for lowering energy use. Sustainability: Improve your environmental footprint YVAA lowers both direct and indirect impact on the environment. It uses R134a refrigerant which has zero ozone depletion potential (ODP). The design minimizes the quantity of re- frigerant used in the system. Every YVAA model helps LEED projects earn the Energy and Atmosphere Credit 4.

5 The highest portion of green house gases is carbon dioxide gener- ated from electric power plants. HVAC systems are one of the largest consumers of electric- ity in commercial buildings. YVAA Chillers reduce the electricity usage, thereby contributing to reducing greenhouse gases and helping keep the planet cool. Low Sound: Quiet operation makes you a good neighbor The variable speed technology on YVAA allows unparalleled low sound levels at off peak design conditions. This makes YVAA a great solution for sound sensitive zones. Several acoustic attenuation options such as smart controls (SilentNight ), aerodynamic fans, and effective sound enclosures allow the chiller to meet even the most stringent sound level requirements.

6 Confidence: Proven performance provides peace of mind YVAA design is proven by years of success with the previous generation of YORK VSD. Air-Cooled Screw Chillers with thousands of machines operating in more than one hundred countries. YVAA is configurable to be the perfect fit for your unique needs. YVAA offers an array of options that can be tailored and tuned to match the capacity, efficiency, sound and footprint for your specific application. Several variations of condenser fans, evaporator arrangements, sound kits, protection enclosures, and controls schemes are available to meet specific requirements for your site. JOHNSON CONTROLS 5. FORM (915). Unit Overview SEMI-HERMETIC YORK TWIN Screw COMPRESSORS. The direct-drive, semi-hermetic rotary twin- Screw compressors incorporate advanced technology in a rugged design.

7 The continuous function, microprocessor controlled VSD. provides smooth capacity control from 100% down to 10% of chiller capacity. State-of- the-art technology, obtained from decades of Screw Compressor design and manufactur- ing by FRICK , ensures optimal efficiencies at all chiller load points. With no unloading steps or slide valves in the compressors, the YVAA variable speed driven compressors have 50% fewer moving parts than fixed speed compressors with slide valves. The YVAA. Compressor is one of the most efficient and reliable Screw compressors in the industry. EVAPORATOR. The evaporator is a shell and tube, hybrid falling film type heat exchanger. It contains a balance of flooded and falling film technology to optimize efficiency, minimize refrigerant charge, and maintain reliable control.

8 A specifically designed distribution system provides uniform refrigerant flow for optimum performance. CONDENSER. The YVAA introduces the microchannel coil to the YORK Screw Compressor chiller line. Microchannel coils are made of a single material to avoid galvanic corrosion due to dis- similar metals. Coils and headers are brazed as one piece, minimizing leaks. The inher- ently rugged coil construction, which includes non-overhanging fins, eliminates the pos- sibility of fin damage. The microchannel maximizes condenser heat transfer, resulting in a smaller footprint, and reduces refrigerant charge by as much as 50%. The condenser fans are composed of corrosion resistant aluminum hub and glass-fiber- reinforced polypropylene composite blades molded into a low-noise airfoil section.

9 All blades are statically and dynamically balanced for vibration-free operation. Fan motors are Totally Enclosed Air-Over (TEAO), squirrel-cage type and current protected. The di- rect drive motors feature double-sealed and permanently lubricated ball bearings, cutting down on maintenance cost over the life of the unit. REFRIGERANT CIRCUIT. The YVAA has one independent refrigerant circuit per Compressor . Each circuit uses copper refrigerant pipe formed on computer-controlled bending machines. By using com- puter-aided technology, over 60% of system piping brazed joints have been eliminated (as compared to designs that use fittings), resulting in a highly reliable and leak-resistant system. COMPLETE FACTORY PACKAGE.

10 Each unit is shipped as a complete factory package, completely assembled with all in- terconnecting refrigerant piping and internal wiring and ready for field installation. Prior to shipment, each individual chiller undergoes an extensive testing procedure, ensuring workmanship is the highest quality and that the initial start-up is trouble-free. 6 JOHNSON CONTROLS. FORM (915). Unit Overview (Cont'd). Before leaving the factory, each refrigerant circuit is factory pressure tested, evacuated and then fully charged with R134a refrigerant and oil. An operational test is performed with water flowing through the evaporator to ensure each circuit functions correctly. ELECTRICAL. All controls and motor starting equipment necessary for unit operation are factory wired and function tested.