YK - ALL MODELS - york.ru.com

1 ENGINEERING GUIDEYK - ALL MODELSR evision 0 Form (1210)CENTRIFUGAL LIQUID CHILLERSTYLE G (879 - 10,500 KW)R134a2 Form No. (1210)NOMENCLATURE YK ER ER Q7 5 CS G S Special Fea turesModel Design Level Evaporator Code Motor Code Condenser Code Power Supply Compressor Code 5 for 50 Hz Introduction .. 3 Ratings .. 4 optiview control center .. 5 Mechanical Specifi cations .. 8 Accessories and Modifi cations .. 12 Application Data .. 14 Dimensions (mm) - Unit .. 24 Dimensions (mm) - Nozzle Arrangements.

2 27 Weights .. 38 TABLE OF CONTENTS3 Form No. (1210)INTRODUCTIONYORK YK Chillers offer a complete combination of features for total owner COMPONENTS MAXIMIZE EFFICIENCYA ctual chiller effi ciency cannot be determined by analyzing the theoretical effi ciency of any one chiller component. It requires a specifi c combination of heat exchanger, compressor, and motor performance to achieve the lowest system kW/kW. YORK chiller technology matches chiller system components to provide maximum chiller effi ciency under actual not just theoretical operating ENERGY PERFORMANCEJ ohnson Controls pioneered the term Real-World Energy to illustrate the energy-saving potential of focusing on chiller performance during off-design conditions.

3 Off-design is not only part load, but full load operation as well, with reduced entering condenser water temperatures (ECWTs). This is where chillers operate 99% of the time, and where operating costs add YK chillers are the only chillers designed to operate on a continuous basis with cold ECWT and full condenser fl ow at all load points, taking full advantage of Real-World conditions. This type of operation benefi ts the cooling tower as well; reducing cycling of the fan motor and ensuring good coverage of the cooling fi YK chillers offer the most effi cient Real-World operation of any chiller, meaning lower operating costs and an excellent return on your chiller DESIGNH ermetic motor burnout can cause catastrophic damage to a chiller.

4 The entire chiller must be cleaned, and the refrigerant replaced. YORK YK centrifugal chillers eliminate this risk by utilizing air-cooled motors. Refrigerant never comes in contact with the motor, preventing contamination of the rest of the companies that offer policies on large air conditioning equipment often consider air-cooled motors a signifi cant advantage over hermetic refrigerant-cooled EFFICIENCY HEAT EXCHANGERSYK chiller heat exchangers offer the latest technology in heat transfer surface design to give you maximum effi ciency and compact design. Waterside and refrigerant side design enhancements minimize both energy consumption and tube STAGE COMPRESSOR DESIGN AND EFFICIENCY PROVEN IN THE MOST DEMANDING APPLICATIONSD esigned to be the most reliable chillers we ve ever made, YORK YK centrifugal chillers incorporate single-stage compressor design.

5 With fewer moving parts and straightforward, effi cient engineering, YORK single-stage compressors have proven durability records in hospitals, chemical plants, gas processing plants, the Navy, and in other applications where minimal downtime is a crucial thousands of installations worldwide, YORK single-stage compressors are working to reduce energy costs. High strength aluminum-alloy compressor impellers feature backward curved vanes for high effi ciency. Airfoil shaped pre rotation vanes minimize fl ow disruption for the most effi cient part load performance. Precisely positioned and tightly fi tted, they allow the compressor to unload smoothly from 100% to minimum load for excellent operation in air conditioning control OF COMPRESSOR OIL PRESSUREU tilizing our expertise in variable speed drive technology and applications, Johnson Controls has moved beyond the fi xed head and bypass approach of oil pressure control .

6 The old approach only assures oil pressure at the outlet of the pump rather than at the compressor, and allows no adjustment during chiller operation. The YK chillers feature a variable speed drive oil pump, monitoring and providing the right amount of oil fl ow to the compressor on a continuous basis. This design also provides sophisticated electronic monitoring and protection of the oil pump electrical supply, ensuring long life and reliable operation of the oil pump motor. Variable speed drive technology reduces oil pump power consumption, running only at the speed required, rather than at full head with a pressure regulating bypass PACKAGING REDUCES FIELD LABOUR COSTSYORK YK centrifugal chillers are designed to keep installation costs low.

7 Where installation access is not a problem, the unit can be shipped completely packaged, requiring minimal piping and wiring to complete the those units utilizing Variable Speed Drive or a factory-installed Solid-State Starter, the three power leads provide all power to the chiller and its No. (1210)RATINGSTAKE ADVANTAGE OF COLDER COOLING TOWER WATER TEMPERATURESYORK YK centrifugal chillers have been designed to take full advantage of colder cooling tower water temperatures, which are naturally available during most operating hours. Considerable energy savings are available by letting tower water temperature drop, rather than artifi cially holding it above C, especially at low load, as some chillers chillers are designed within EN ISO 9001 and built within an EN ISO 9002 accredited manufacturing conform with the following European Directives: Machinery directive (2006/42/EC) EMC Directive (2004/108/EC) Pressure Equipment Directive (97/23/EC) Safety Code for Mechanical Refrigeration(EN378-2 (2008))COMPUTERIZED PERFORMANCE RATINGSEach chiller is custom-matched to meet the individual building load and energy requirements.

8 A variety of standard heat exchangers and pass arrangements are available to provide the best possible is not practical to provide tabulated performance for each combination, as the energy requirements at both full and part load vary signifi cantly with each heat exchanger and pass arrangement. Computerized ratings are available through each Johnson Controls sales offi ce. These ratings can be tailored to specifi c job PERFORMANCES ince the vast majority of its operating hours are spent at off-design conditions, a chiller should be chosen not only to meet the full load design, but also for its ability to perform effi ciently at lower loads and lower tower water temperatures.

9 It is not uncommon for chillers with the same full load kW to have an operating cost difference of over 10% due to part-load load information can be easily and accurately generated by use of the computer. And because it is so important to an owner s operating budget, this information has now been more detailed analysis must take into account actual building load profi les, and local weather data. Part load performance data should be obtained for each job using its own design No. (1210) optiview control CENTERYK optiview control CENTERThe YORK optiview control center , furnished as standard on each chiller, provides the ultimate in effi ciency, monitoring, data recording, chiller protection and operating ease.

10 The control center is a factory-mounted, wired and tested state-of-the-art microprocessor based control system for R134a centrifugal chillers. The panel is confi gured with a (264 mm) diagonal color Liquid Crystal Display (LCD) surrounded by soft keys, which are redefi ned with one keystroke based on the screen displayed at that time. This revolutionary development makes chiller operation quicker and easier than ever before. Instead of requiring keystroke after keystroke to hunt for information on a small monochrome LCD screen, a single button reveals a wide array of information on a large, full-color illustration of the appropriate component, which makes information easier to interpret.