FORM 160.81-EG2 (511) Model YR Twin-Screw Compressor Liquid Chillers Design Level C 200 through 430 tons (60 Hz) 700 through 1500 kW (50 Hz) 170 through 365 tons (50 Hz) 600 through 1280 kW (50 Hz) Utilizing HFC-134a ASHRAE 90.
FORM 160.81-EG2 (511) Table of Contents Contents FORM 160.81-EG2 (511)........................................................................................................................................................................................ 1 Introduction............................................................................................................................................................................................................ 3 Ratings...........................
Introduction The YORK MaxE™ YR Chiller offers a complete combination of features for total owner satisfaction. MATCHED COMPONENTS MAXIMIZE EFFICIENCY Actual chiller efficiency cannot be determined by analyzing the theoretical efficiency of any one chiller component. It requires a specific combination of heat exchanger, compressor, and motor performance to achieve the optimized system performance (IPLV/NPLV).
FORM 160.81-EG2 (511) Ratings Rated in accordance with the latest issue of AHRI Standard 550/590. pass arrangement. Computerized ratings are available through each Johnson Controls sales office. These ratings can be tailored to specific job requirements, and are part of the ARI Certification Program.
OptiView Control Center OPTIVIEW CONTROL CENTER The YORK OptiView Graphic Display Control Center, furnished as standard on each chiller, provides the ultimate in efficiency, monitoring, data recording, chiller protection and operating ease. The control center is a factory-mounted, wired and tested state-of-the-art microprocessor based control system for R-134a screw chillers. The panel is configured with a 10.
OptiView Control Center down and a chiller Run Contact. Pressure transducers sense system pressures and thermistors sense system temperatures. The output of each transducer is a DC voltage that is analogous to the pressure input. The output of each thermistor is a DC voltage that is analogous to the temperature it is sensing. Setpoints can be changed from a remote location via 0-10VDC, 4-20mA, contact closures or through serial communications. The adjustable remote reset range [up to 20°F (11.
FORM 160.81-EG2 (511) from 1°F (0.55°C) below to a minimum of 38°F (2.22°C). Restart is adjustable from setpoint up to a max. of 80°F (26.6°C). The Panel will check for flow to avoid freezeup of the tubes. If flow is interrupted, shutdown will occur after a minimum of two seconds.
FORM 160.81-EG2 (511) OptiView Control Center Programmable: • On Setpoint • Off Setpoint The OIL SEPARATOR screen displays a close-up view of the chiller oil separator/sump.
FORM 160.81-EG2 (511) The SETUP is the top level of the general configuration parameters. It allows programming of the time and date, along with specifications as to how the time will be displayed. In addition, the chiller configuration as determined by the Micro Board program jumpers and program switches is displayed.
FORM 160.81-EG2 (511) OptiView Control Center The faults are color coded for ease in determining the severity at a glance, recording the date, time and description. (See Display Messages for Color Code meanings.) Display Only • Last Normal Shutdown • Last Fault While Running • Last Ten Faults Programmable: • Print History • Print All Histories By pressing the VIEW DETAILS key you will move to the HISTORY DETAILS screen.
FORM 160.81-EG2 (511) • Slide Valve Closing Before Shutdown • System Lockout Delay Run Messages include: • Leaving Chilled Liquid Control • Motor Pulldown Limit • Motor – High Current Limit Start Inhibit Messages include: • Anti-Recycle XX min/sec.
Mechanical Specifications GENERAL Each YORK MaxE YR Screw Chiller will be completely factory-packaged including evaporator, condenser, compressor, motor, OptiView control center and all interconnecting unit piping and wiring. The chiller will be painted prior to shipment and will be packaged to protect the unit during shipment. Performance will be certified in accordance with ARI Standard 550/590. The initial charge of refrigerant and oil will be supplied for each unit.
FORM 160.81-EG2 (511) CONDENSER Condenser will be horizontal shell and tube type, with a discharge gas baffle to prevent direct high velocity gas impingement on the tubes, and distribute the gas flow. An integral refrigerant sub-cooler is located under the condensing tube bundle section for improved thermodynamic cycle efficiency. Baffles direct the liquid refrigerant flow back-and-forth, across the sub-cooler tubes, as it travels the length of the shell.
Mechanical Specifications olds are programmable, one for the ice mode and one for the standard cooling mode. The chiller has the capability to remain in the standard control mode for temperatures between 20 to 70°F (-6.6 to 21.1°C) for applications involving a process or comfort cooling duty that requires leaving chilled liquid temperature setpoint control. The chiller control panel also provides: 1. System operating information including: a. return and leaving chilled liquid temperature b.
FORM 160.81-EG2 (511) 7. e. power fault f. low phase (X) temperature sensor g. run signal h. invalid current scale selection i. phase locked loop j. low supply line voltage k. high supply line voltage l. logic board processor m. logic board power supply n. phase loss Security access to prevent unauthorized change of setpoints, to allow local or remote control of the chiller, and to allow manual operation of the slide valve.
Mechanical Specifications PAINT Exterior surfaces are protected with one coat of Carib bean blue, durable alkyd‑modified, vinyl enamel, ma chinery paint. SHIPMENT The unit shall be completely assembled, with all main, auxiliary, and control piping installed, controls wired, leak tests completed, functional run tests completed, and re- 16 FORM 160.81-EG2 (511) frigerant charge in place. The oil charge, relief device and other miscellaneous materials shall be packed separately.
Accessories and Modifications FORM 160.81-EG2 (511) SOLID STATE STARTER FACTORY INSULATION OF EVAPORATOR The Solid State Starter is a reduced voltage starter that controls and maintains a constant current flow to the motor during startup. It is compact and mounted on the chiller at the motor terminals. Power and control wiring is factory supplied. Available for 200-600 volts, the starter enclosure is NEMA-1 with a hinged access door with lock and key.
Accessories and Modifications SEQUENCE CONTROL KIT For two, three or four units with chilled water circuits connected in series or parallel, the kit consists of return water thermostat, lead-lag selector switch for sequence starting, and time delay relay, with NEMA-1 enclosures, designed for 115V-1-50/60 Hz.
FORM 160.81-EG2 (511) SI Metric Conversion The following factors can be used to convert from English to the most common Sl Metric values. MEASUREMENT MULTIPLY THIS ENGLISH VALUE BY TO OBTAIN THIS METRIC VALUE CAPACITY TONS REFRIGERANT EFFECT (ton) 3.516 KILOWATTS (kW) KILOWATTS (kW) NO CHANGE KILOWATTS (kW) HORSEPOWER (hp) 0.7457 KILOWATTS (kW) GALLONS / MINUTE (gpm) 0.0631 LITERS / SECOND (L/s) FEET (ft) 304.8 MILLIMETERS (mm) POWER FLOW RATE LENGTH INCHES (in) 25.
FORM 160.81-EG2 (511) Application Data The following is a user’s guide in the application and installation of MaxE Chillers, and will ensure the reliability and trouble-free life for which this equipment was designed. While this guide is directed towards normal, water-chilling applications, the Johnson Controls sales represen-tatives can provide complete recommendations on other types of applications.
FORM 160.81-EG2 (511) tween 38°F (3.3°C) and 70°F (21.1°C) for water temperature ranges between 3°F and 30°F (1.7°C and 16.7°C). Water Quality – The practical and economical application of liquid chillers requires that the quality of the water supply for the condenser and evaporator be analyzed by a water treatment specialist. Water quality may affect the performance of any chiller through corrosion, deposition of heat-resistant scale, or sedimentation or organic growth.
FORM 160.81-EG2 (511) Application Data sized units. When multiple units are in operation, they will load and unload at equal percentages of design full-load for the chiller. be shut down by a sequence control. Since all water is flowing through the operating unit, that unit will cool the water to the desired temperature. Depending on the number of units and operating characteristics of the units, loading and unloading schemes should be designed to optimize the overall efficiency of the chiller plant.
FORM 160.81-EG2 (511) Control of sound and vibration transmission must be taken into account in the equipment room construction as well as in the selection and installation of the equipment. THERMAL INSULATION No appreciable operating economy can be achieved by thermally insulating the chiller. However, the chiller’s cold surfaces should be insulated with a vapor barrier insulation sufficient to prevent condensation.
FORM 160.81-EG2 (511) Application Data • Three-lead type of starting (Across-the-Line, Autotransformer and Primary Reactor) than maximum motor kW, the FLA should be reduced using the following equation: Motor kW 100%Load PF x x Max. Motor FLA Max. Motor kW PF@%Load Minimum circuit ampacity per conductor (1 of 3): Ampacity = 1.25 x compressor motor amps.
FORM 160.81-EG2 (511) TABLE 4 – 50 HZ ELECTRICAL DATA AMP NAME(MAX) COMP. PLATE VOLT. FLA LRA T0/T1 T2/T3 NOTE: 380 400 415 380 400 415 364 348 333 397 395 363 1416 1488 1358 2037 2148 1840 100% 90% 80% MOTOR DATA 60% 50% 70% 40% 30% 20% PF EFF PF EFF PF EFF PF EFF PF EFF PF EFF PF EFF PF EFF PF 89.3 88.2 89.2 87.5 83.5 87.9 93.7 94.1 93.8 94.8 95.0 94.8 89.2 87.7 89.1 86.5 81.6 87.0 94.3 94.6 94.4 95.1 95.2 95.1 89.1 87.2 88.9 85.4 79.7 86.1 94.8 95.0 94.9 95.3 95.3 95.
FORM 160.
FORM 160.
FORM 160.
FORM 160.81-EG2 (511) EVAPORATOR – CONDENSER SHELL CODES A B T1 COMPRESSORS T0 & T1 COMPRESSORS DIM.
FORM 160.81-EG2 (511) Dimensions (Ft.-In.) – Nozzle Arrangements EVAPORATORS – COMPACT WATER BOXES REAR OF UNIT REAR OF UNIT A 1-PASS NOZZLE ARRANGEMENTS EVAP. NO. OF PASSES IN OUT A H 1 H A H CC CC EVAPORATOR EVAPORATOR GG 1" MOTOR END GG FLOOR LINE 1" COMPRESSOR END REAR OF UNIT REAR OF UNIT B J C K DD 2-PASS NOZZLE ARRANGEMENTS EVAP. NO.
FORM 160.81-EG2 (511) CONDENSERS – COMPACT WATER BOXES FRONT OF UNIT 1-PASS NOZZLE ARRANGEMENTS EVAP. NO. OF PASSES IN OUT P Q 1 Q P Q P CC CC CONDENSER CONDENSER GG 1" MOTOR END GG FLOOR LINE 1" COMPRESSOR END 2-PASS FRONT OF UNIT S U R T DD NOZZLE ARRANGEMENTS EVAP. NO.
FORM 160.81-EG2 (511) Dimensions (Ft.-In.
FORM 160.
FORM 160.81-EG2 (511) Dimensions (Ft.-In.
FORM 160.
FORM 160.81-EG2 (511) Dimensions (mm) – Nozzle Arrangements EVAPORATORS – COMPACT WATER BOXES REAR OF UNIT REAR OF UNIT A NOZZLE ARRANGEMENTS EVAP. NO. OF PASSES IN OUT A H 1 H A H CC CC EVAPORATOR EVAPORATOR GG 1" GG FLOOR LINE MOTOR END 1-PASS 1" COMPRESSOR END REAR OF UNIT REAR OF UNIT B J C K DD NOZZLE ARRANGEMENTS EVAP. NO. OF PASSES IN OUT C B 2 K J DD BB BB EVAPORATOR NOTE: Water must enter through lower connection to achieve rated performance.
FORM 160.81-EG2 (511) CONDENSERS – COMPACT WATER BOXES FRONT OF UNIT 1-PASS NOZZLE ARRANGEMENTS EVAP. NO. OF PASSES IN OUT P Q 1 Q P Q P CC CC CONDENSER 1" CONDENSER GG FLOOR LINE MOTOR END GG COMPRESSOR END 1" 2-PASS FRONT OF UNIT S U R T DD NOZZLE ARRANGEMENTS EVAP. NO.
FORM 160.
FORM 160.81-EG2 (511) EVAPORATOR 1-PASS IN OUT 1 6 6 1 G H EVAPORATOR 2-PASS IN OUT 2 3 7 8 EVAPORATOR SHELL CODE T, V W, X EVAPORATOR 3-PASS IN OUT 5 10 9 4 EVAPORATOR SHELL CODE T, V W, X EVAPORATOR SHELL CODE T, V W, X K (2-PASS BACK HEAD) EVAPORATOR NOZZLE DIMENSIONS (1-PASS) G 322 332 H 676 702 EVAPORATOR NOZZLE DIMENSIONS (2-PASS) G 322 332 H 676 702 K 222 224 EVAPORATOR NOZZLE DIMENSIONS (1-PASS) G 322 332 H 676 702 NOTES (see table on page 38): 1. All dimensions are approximate.
FORM 160.
FORM 160.81-EG2 (511) CONDENSER 1-PASS IN OUT 11 16 16 11 G H CONDENSER 2-PASS IN OUT 12 13 17 18 CONDENSER SHELL CODE T, V W, X CONDENSER 3-PASS IN OUT 15 20 19 14 CONDENSER SHELL CODE T, V W, X CONDENSER SHELL CODE T, V W, X K (2-PASS BACK HEAD) CONDENSER NOZZLE DIMENSIONS (1-PASS) G 322 322 H 676 676 CONDENSER NOZZLE DIMENSIONS (2-PASS) G 313 332 H 654 676 K 192 222 CONDENSER NOZZLE DIMENSIONS (1-PASS) G 322 322 H 676 676 NOTES (see table on page 40): 1. All dimensions are approximate.
Dimensions (inches) – Floor Layout FORM 160.81-EG2 (511) NEOPRENE ISOLATORS FLOOR LAYOUT CL EVAPORATOR CL SHELLS END SHEET END SHEET DIMENSION "C" From Fig. 3 (pgs. 26 & 27) CL CONDENSER 7/8" DIA. HOLE 3" SUPPORT FOOT 6" 3" DIMENSION "A" From Fig. 3 (pgs.
FORM 160.81-EG2 (511) Dimensions (mm) – Floor Layout NEOPRENE ISOLATORS FLOOR LAYOUT CL EVAPORATOR CL SHELLS END SHEET END SHEET DIMENSION "C" From Fig. 3 (pgs. 26 & 27) CL CONDENSER 22 mm DIA. HOLE 76.2 SUPPORT FOOT 152.4 76.2 DIMENSION "A" From Fig. 3 (pgs. 26 & 27) 25 DIMENSIONS ARE TYPICAL ALL 4 CORNERS 203.2 140 114 13 ISOLATOR TO BE CENTERED UNDER SUPPORT FOOT 178 152 114 114 140 140 13 13 mm STEEL PLATE 13 mm STEEL PLATE 25 mm DEFLECTED HEIGHT UNIT WEIGHT UP TO 7,423 KGS.
FORM 160.81-EG2 (511) Dimensions – Floor Layout SPRING ISOLATORS (Pgs. 26 & 27) (Pgs. 26 & 27) ALL DIMENSIONS ARE IN INCHES (Pgs. 26 & 27) (Pgs.
FORM 160.81-EG2 (511) Weights TABLE 7 – WEIGHTS COMP.
FORM 160.81-EG2 (511) Weights TABLE 7 – WEIGHTS CONT. COMP.
FORM 160.81-EG2 (511) Guide Specifications GENERAL Furnish and install where indicated on the drawings YORK MaxE Rotary Screw Liquid Chilling Unit(s). Each unit shall produce a capacity of tons, cooling GPM of from °F to °F when supplied with _____ GPM of condenser water at °F design ECWT. Power input shall not exceed kW with an IPLV (NPLV) of _____. The evaporator shall be selected for ft2 °F hr/BTU fouling factor and a maximum liquid pressure drop of ft.
FORM 160.81-EG2 (511) Guide Specifications tomatically remove oil which may have migrated to the evaporator and return it to the compressor. The oil separator shall be of a vertical design with no moving parts, and shall provide high-efficiency oil separation before the refrigerant enters the heat exchangers. The oil separator shall be designed, tested and stamped in accordance with ASME Boiler and Pressure Vessel Code, Section VIII – Division 1.
FORM 160.81-EG2 (511) Control Panel – The control panel shall include a 10.4in. diagonal color liquid crystal display (LCD) surrounded by "soft " keys which are redefined based on the screen displayed at that time. This shall be mounted in the middle of a keypad interface and installed in a locked enclosure. The screen shall detail all operations and parameters, using a graphical representation of the chiller and its major components.
FORM 160.81-EG2 (511) Guide Specifications 6.1 7. Cycling shutdowns shall include: a. Multiunit cycling - contacts open b. System cycling - contacts open c. Control panel - power failure d. Leaving chilled liquid - low temperature e. Leaving chilled liquid - flow switch open f. Condenser - flow switch open g. Motor controller - contacts open h. Motor controller - loss of current i. Power fault j.
FORM 160.81-EG2 (511) tation and single-phase failure protection; high temperature safety protection, motor current imbalance and undervoltage safeties; open and close SCR protection; momentary power interruption protection. The LCSSS is cooled by a closed loop, fresh water circuit consisting of a water-to-water heat exchanger and 1/25 HP circulating pump. All interconnecting water piping is factory installed and rated for 150 PSIG working pressure.
Form 160.81-EG2 (511) Supersedes: 160.
