YORK YCAL-SB Millennium air cooledscroll liquid chillers provideĬhilled liquidfor all air conditioning applications. AVAILABLE MODELS & NOMINAL COOLING CAPACITIES TABLE 1 Each compressor is fitted with a crankcase strap heater. The compressors shall be switched On and Off by the unit microprocessor to provide capacity control. The motor terminal boxes shall have IP-54 weather protection. The overload protection will automatically reset. The compressor motors shall have integral protection against overloads. All rotating parts are statically and dynamically balanced. High efficiency is achieved through a controlled orbit and the use of an advanced scroll geometry. Compressors The unit shall have hermetic scroll compressors. The unit structure is heavy-gauge, galvanised steel coated with baked-on powder paint (Desert Sand (RAL 1019)). The unit shall be pressure tested, evacuated and fully charged with refrigerant and include an initial oil charge. After assembly the unit shall have a full test run with water flowing through the cooler. SPECIFICATION The chillers shall be completely factory assembled with all interconnecting refrigerant piping and wiring ready for field installation. Improved operating efficiency at part load and reduced operating costs. Optional remote liquid temperature reset. Easy to install and minimises site wiring costs. Sequencing up to eight chillers in parallel based on mixed leaving liquid temperature. Ideal for maintenance operations Microprocessor control with visual display of temperatures and alarms. High capacity design ideal for reduced base area applications. Reduced sound levels for low sound applications. Verifies quality control and ensures that the unit operates satisfactorily prior to delivery. Enhanced efficiency and improved part load performance. Electronic Expansion Valves (EEV) fitted as standard. CONTENTS Specification Accessories and Options Controls Operating Limitations Refrigeration Flow Diagram Selection Guide Water Pressure Drops Cooling Capacities Physical Data Electrical Data Electrical Connections Space Requirements Dimensions FEATURES BENEFITS High efficiency. Each unit includes four, five or six hermetic scroll compressors, a liquid cooler, air cooled condensers, and a weather resistant microprocessor control centre, all mounted on a formed steel base. They are completely self-contained and are designed to be located outside on the roof of a building or at ground level. YCAL-SB Millennium ™ AIR COOLED LIQUID CHILLER R407C REFRIGERANT COOLING CAPACITIES 141 kW to 360 kW YORK YCAL-SB Millennium ™ air cooled scroll liquid chillers provide chilled liquid for all air conditioning applications.
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