Millennium chiller heat exchangers offer the latest technology in heat transfer surface design to give you maximum efficiency and compact design. Water-side and refrigerant-side design enhancements minimize both energy consumption and tube fouling.
FACTORY PACKAGING REDUCES FIELD LABOR COSTS

Ratings

ratings can be tailored to specific job requirements, and are part of the ARI Certification Program. Rated in accordance with the latest issue of ARI Standard 550/590. OFF-DESIGN PERFORMANCE Since 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 efficiently at lower loads and lower tower water temperatures. It is not uncommon for chillers with the same full-load KW/TON to have an operating cost difference of over 10% due to part-load operation. Part-load information can be easily and accurately generated by computer. And because it is so important to an owners operating budget, this information is now standard within the ARI Certification Program in the form of an Integrated Part-Load Value (IPLV), and Non-Standard Part-Load Value (NPLV). The IPLV / NPLV formulas from ARI Standard 550/590 closely track chiller operations, and provide a more accurate indication of chiller performance than the previous IPLV / APLV formula. A more detailed analysis must take into account actual building load profiles, and local weather data. Part-load performance data should be obtained for each job using its own design criteria.
ARI CERTIFICATION PROGRAM The performance of YORK Millennium chillers is certified to the Air Conditioning and Refrigeration Institute (ARI) complying with the certification sections of the latest issue of ARI Standard 550/590. Under this Certification Program, chillers are regularly tested in strict compliance with this Standard. This provides an independent, third-party verification of chiller performance. COMPUTERIZED PERFORMANCE RATINGS Each chiller is custom-matched to meet the individual building load and energy requirements. A large number of standard heat exchangers and pass arrangements are available to provide the best possible match. It is not practical to provide tabulated performance for each combination, as the energy requirements at both full and part- load vary significantly with each heat exchanger and pass arrangement. Computerized ratings are available through each YORK sales office. These

OptiView Control Center

OPTIVIEW CONTROL CENTER The YORK OptiView 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 or R-22 screw chillers. The panel is configured with a 10.4 inch diagonal color Liquid Crystal Display (LCD) surrounded by soft keys, which are redefined with one keystroke based on the screen display 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. This is all mounted in the middle of a keypad interface and installed in a locked enclosure. The LCD display allows graphic animated display of the chiller, chiller sub-systems and system parameters; this allows the presentation of several operating parameters at once. In addition, the operator may view a graphical representation of the historical operation of the chiller as well as the present operation. A Status Bar is displayed at all times on all screens. It contains the System - Status Line and Details Line, the Control Source, Access Level, Date and Time. All date representations and calculations use four digits for the year to provide Year 2000 compliance.
During the Start Sequence and System Lockout Delay, the system status will include a countdown timer indicating the time remaining. The control panel is compatible with the YORK Solid State Starter (optional), Electromechanical (E-M) starter, or any customer supplied E-M starter that complies with the YORK R-1051 standard. The locations of various chiller parameters are clearly marked and instructions for specific operations are provided. The panel verbiage is available in other languages as an option, with English always available. Data can be displayed in either English or Metric units, plus keypad entry setpoints of 0.1 increments. Security access is provided to prevent unauthorized change of setpoints. This is accomplished with three different levels of access and passwords for each level. There are screens, displayed values, programmable setpoints and manual controls not shown available to service the chiller. They are only displayed when logged in at the service access level. The Advanced Diagnostics and troubleshooting information for the chiller and the panel is also included. The panel is fused through a 1-1/2 or 2 KVA transformer in the compressor motor starter to provide individual overcurrent protected power for all controls. Numbered terminal strips for wiring such as Remote Start/Stop, Flow Switch, Chilled Water Pump and Local or Remote Cycling Device are provided. The Panel also provides field interlocks that indicate the chiller status. These contacts include a Remote Mode Ready To Start, a Cycling Shut-

down, a Safety Shutdown 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 010VDC, 4-20mA, contact closures or through serial communications. The adjustable remote reset range [up to 20F (11.1C)] provides flexible, efficient use of remote signal depending on reset needs. Serial data interface to the YORK ISN Building Automation System (BAS) is through the General Protocol Interface Card (GPIC), which can be mounted inside the Control Center. This printed circuit board requests the required data from the Micro Board and makes it available for the YORK ISN network. This optional board is available through the YORK BAS group. The operating program is stored in non-volatile memory (EPROM) to eliminate chiller failure due to AC power failure/battery discharge. Programmed setpoints are retained in lithium battery-backed RTC memory for 11 years minimum. Smart Freeze Point Protection can operate the chiller as low as 36F (2.22C) leaving chilled water temperature, without nuisance trips on Low Water Temperature. The sophisticated program and sensor monitors the chiller water temperature to prevent freeze-up. Each programmable point has a pop-up screen with the allowable ranges, so the chiller cannot be programmed to operate outside of its design limits. Thermal ice storage systems are based on the concept of using off-peak, lower cost electricity to build ice for handling the cooling load during peak hours. The most efficient way to build ice is to maximize chiller load and minimize run time. Standard chiller control systems are not designed for this operating mode. In a typical application, chillers will load and unload to maintain a leaving chilled liquid setpoint. When the YORK YS chiller operates in the thermal storage control mode, the unit will remain at 100% load until the setpoint shutdown temperature is reached. To add greater operating flexibility and eliminate unnecessary chiller cycling, two different Low Water (Liquid) Temperature Restart Thresholds can be programmed, one for the ice mode and one for the standard cooling mode. This control enhancement is standard on all YS chillers. The chiller can also be left in the standard control mode for temperatures ranging between 20 and 70F (-6.7 and 21.1C), for applications involving a process cooling duty that requires leaving chilled liquid temperature setpoint control.

(continued)

The CONDENSER screen displays a cutaway view of the chiller condenser. The liquid flow is animated to indicate flow through the condenser. All setpoints relating to the condenser side of the chiller are maintained on this screen. With the proper access level this screen also serves as a gateway to controlling the Refrigerant Level. The following can also be viewed through this screen: Display Only: Leaving Condenser Liquid Temperature Return Condenser Liquid Temperature Condenser Pressure Condenser Saturation Temperature Small Temperature Difference High Pressure Switch (Open/Closed) Condenser Liquid Flow Switch Condenser Liquid Pump (Run/Stop) Programmable: High Pressure Warning Threshold Freeze Warning (Enabled/Disabled) Freeze Time The VARIABLE ORIFICE CONTROL screen, accessed from the CONDENSER screen in SERVICE access level, displays all of the applicable Variable Orifice control parameters and allows a Service Technician to program the Delta P setpoint. The Low Evaporator Pressure and Superheat Override LEDs are located on this screen. A view of the liquid flow piping to the chiller condenser, along with the solenoid flow control valve, is shown. The following can also be performed through this screen: Display Only: Condenser Pressure Evaporator Pressure Delta P (Condenser Evaporator) Discharge Temperature Condenser Saturation Temperature Superheat Temperature Low Evaporator Override (LED) Superheat Override (LED) Programmable: Delta P Setpoint
The COMPRESSOR screen displays a cutaway view of the chiller compressor, revealing the rotary screw, and shows all conditions associated with the compressor. The slide valve positioning is animated and with the proper Access level, it can be manually controlled. Animation of the compressor rotors indicates whether the chiller is presently in a RUN condition. This screen also serves as a gateway to sub-screens for calibrating the slide valve or configuring the optional Hot Gas Bypass. From this screen you can view the following: Display Only: Differential Oil Pressure Oil Temperature Discharge Temperature Discharge Superheat Slide Valve Position Oil Return Solenoid (LED) Full Load Amps (E.M. Starter Only) Phase A, B, C Current (SSS Only) Programmable: Slide Valve Load (Manual) Slide Valve Hold (Manual) Slide Valve Unload (Manual) Slide Valve Auto Max. Load Temperature Minimum Load FLA Minimum Load Control Source The HOT GAS BYPASS screen, accessed from the COMPRESSOR screen, displays a pictorial of the bypass line and solenoid valve location on the chiller. The Hot Gas ON and OFF Setpoints are programmed on this screen and system parameters pertinent to Hot Gas Bypass operation are displayed. An LED illuminates when the Hot Gas solenoid is ON. If the chiller is equipped with the Hot Gas Bypass option, operation must be enabled on the OPERATIONS screen. From this screen you can perform the following: Display Only: Slide Valve Position Return Chilled Liquid Temperature Leaving Chilled Liquid Temperature Hot Gas Solenoid (LED)

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. From these screens you are able to see an on-screen printout of all the system parameters at the time of the selected shutdown. Display Only: History Printout Programmable: Page Up Page Down Print History Also under the HISTORY screen is the TRENDING screen, accessible by the key marked the same. On this screen, up to six operator-selected parameters, selected from a list of over 140, can be plotted in an X/Y graph format. The graph can be customized to record points once every second up to once every hour. There are two types of charts that can be created: single screen, or continuous screen. The single screen collects data for one screen width (450 data points across the X-axis), then stops. The continuous screen keeps collecting the data, but the oldest data drops off the graph from left to right at the next data collection interval. For ease of identification, each plotted parameter, title and associated Yaxis labeling is color coordinated. Display Only: This screen allows the user to view the graphical trending of the selected parameters and is a gateway to the graph setup screens. Programmable: Start Stop y-axis x-axis
The TREND SETUP screen is used to configure the trending screen. The parameters to be trended are selected from the Trend Common Slots screen, accessed from the Slot Numbers button or the Master Slot Numbers List found in the Operating Manual. The interval at which all the parameters are sampled is selected under the Collection Interval button. The data point minimum and maximum values may be adjusted closer to increase viewing resolution. Programmable: Chart Type (select continuous or one screen) Collection Interval Select Data Point Slot Number (1 - 6) Data Point Min (1 - 6) Data Point Max (1 - 6)
The TREND COMMON SLOTS screen displays the Master Slot Numbers List of the monitored parameters. Display Only: Slot Numbers Programmable: Page Up Page Down Print DISPLAY MESSAGES The Control Center continuously monitors the operating system, displaying and recording the cause of any shutdowns (Safety, Cycling or Normal). The condition of the chiller is displayed at the System Status line that contains a message describing the operating state of the chiller; whether it is stopped, running, starting or shutting down. A System Details Line displays Warning, Cycling, Safety, Start Inhibit and other messages that provide further details of the Status Bar messages. Messages are color-coded: Green Normal Operations; Yellow Warnings; Orange Cycling Shutdowns; and Red Safety Shutdowns to aid in identifying problems quickly. Status messages include: System Ready To Start Cycling Shutdown Auto Restart Safety Shutdown Manual Restart Start Sequence Initiated

Evaporator Transducer or Temperature Sensor Condenser High Pressure Contacts Open Condenser High Pressure Condenser Pressure Transducer Out Of Range Auxiliary Safety Contacts Closed Discharge High Temperature Discharge Low Temperature Oil High Temperature Oil Low Differential Pressure Oil Low Differential Seal Pressure Oil Or Condenser Transducer Error Oil Clogged Filter Oil High Pressure Oil Separator Low Level Control Panel Power Failure Watchdog Software Reboot 5.1 Safety shutdowns with a Solid State Starter (LCSSS) include: Shutdown - Requesting Fault Data. High Instantaneous Current High Phase (X) Heatsink Temperature - Running 105% Motor Current Overload Motor Or Starter Current Imbalance Phase (X) Shorted SCR Open SCR Phase Rotation 6. Cycling shutdowns enunciated through the display and the status bar, and consists of system status, system details, day, time, cause of shutdown, and type of restart required. Cycling shutdowns with a fixed speed drive include: Multiunit Cycling - Contacts Open System Cycling - Contacts Open Control Panel - Power Failure Leaving Chilled Liquid Low Temperature Leaving Chilled Liquid Flow Switch Open Condenser - Flow Switch Open Motor Controller Contacts Open Motor Controller Loss Of Current Power Fault Control Panel Schedule 6.1 Cycling shutdowns with a Solid State Starter (LCSSS) include: Initialization Failed Serial Communications Requesting Fault Data 16

11. 12.

Stop Contacts Open Power Fault Low Phase (X) Temperature Sensor Run Signal Invalid Current Scale Selection Phase Locked Loop Low Supply Line Voltage High Supply Line Voltage Logic Board Processor Logic Board Power Supply Phase Loss Security access to prevent unauthorized change of setpoints, to permit local or remote control of the chiller, and to allow manual operation of the prerotation vanes and oil pump. Access is through ID and password recognition, which is defined by three different levels of user competence: view, operator, and service. Trending data with the ability to customize points of once every second to once every hour. The panel will trend up to 6 different parameters from a list of over 140, without the need of an external monitoring system. The operating program is stored in non-volatile memory (EPROM) to eliminate reprogramming the chiller due to AC power failure or battery discharge. Programmed setpoints are retained in lithium battery-backed RTC memory for a minimum of 11 years with power removed from the system. A fused connection through a transformer in the compressor motor starter to provide individual over-current protected power for all controls. A numbered terminal strip for all required field interlock wiring. An RS-232 port to output all system operating data, shutdown/cycling message, and a record of the last 10 cycling or safety shutdowns to a field-supplied printer. Data logs to a printer at a set programmable interval. This data can be preprograrnmed to print from 1 minute to I day.

BAS REMOTE CONTROL A communication interface permitting complete exchange of chiller data with any BAS system is available with optional ISN translator. ISN translator also allows BAS system to issue commands to the chiller to control its operation. ISN translators come in two models, controlling up to four chillers and eight chillers respectively. FACTORY INSULATION OF COOLER Factory-applied thermal insulation of the flexible, closedcell plastic type, 3/4" (19mm) thick is attached with vapor-proof cement to the cooler shell, flow chamber, cooler tube sheets, suction connection, and (as necessary) to the auxiliary tubing. Not included is the insulation of water boxes and nozzles. This insulation will normally prevent condensation in environments with relative humidities up to 75% and dry bulb temperatures ranging from 50 to 90F (10 to 32C). 1-1/2" (38mm) thick insulation is also available for relative humidities up to 90% and dry bulb temperatures ranging from 50 to 90F (10 to 32C). WATER FLANGES
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. STARTER FIELD INSTALLED A field installed, electro-mechanical compressor motor starter is available, selected for proper size and type for job requirements and in accordance with YORK Engineering Standard R-1079 for Starters. MARINE WATER BOXES Marine water boxes allow service access for cleaning of the heat exchanger tubes without the need to break the water piping. Bolted-on covers are arranged for convenient access. Victaulic nozzle connections are standard; flanges are optional. Marine water boxes are available for condenser and/or evaporator. KNOCK-DOWN SHIPMENT
Four 150 Ib. ANSI raised-face flanges, for condenser and cooler water connections, are factory welded to water nozzles. Companion flanges, bolts, nuts and gaskets are not included. SPRING ISOLATION MOUNTING Spring Isolation mounting is available instead of standard isolation mounting pads when desired. Four level-adjusting/spring-type vibration isolator assemblies with non-skid pads are provided with mounting brackets for field installation. Isolators are designed for one-inch (25.4 mm) deflection. WATER FLOW SWITCHES Paddle-type, vapor-proof water flow switches suitable for 150 psig (1034 KPa) DWP for chilled and condenser water circuits. Switch for 115V-1-50/60 Hz service. A chilled water flow switch is required. Condenser water flow switch is optional.

Connections The standard chiller is designed for 150 psig (1034 kPa) design working pressure in both the chilled water and condenser water circuits. The connections (water nozzles) to these circuits are furnished with grooves for Victaulic couplings. Piping should be arranged for ease of disassembly at the unit for tube cleaning. All water piping should be thoroughly cleaned of all dirt and debris before final connections are made to the chiller. Chilled Water A flow switch must be installed in the chilled water line of every unit. The switch must be located in the horizontal piping close to the unit, where the straight horizontal runs on each side of the flow switch are at least five pipe diameters in length. The switch must be electrically connected to the chilled water interlock position in the unit control center. A water strainer of maximum 1/8" (3.2 mm) perforated holes must be field-installed in the chilled water inlet line as close as possible to the chiller. If located close enough to the chiller, the chilled water pump may be protected by the same strainer. The flow switch and strainer assure chilled water flow during unit operation. The loss or severe reduction of water flow could seriously impair the chiller performance or even result in tube freezeup. Condenser Water The chiller is engineered for maximum efficiency at both design and part-load operation by taking advantage of the colder cooling tower water temperatures which naturally occur during the winter months. Appreciable power savings are realized from these reduced heads. The minimum entering condenser water temperature for other full and part load conditions is provided by the following equation: For R-22; Min ECWT = LCHWT + 11+ [(% load/100) x (15 - full load condenser water T)]
For R-134a; Min ECWT = LCHWT + 16 + [(% load/100) x (10 - full load condenser water T)] Where: ECWT = entering condenser water temperature LCHWT = leaving chilled water temperature MULTIPLE UNITS Selection Many applications require multiple units to meet the total capacity requirements as well as to provide flexibility and some degree of protection against equipment shutdown. There are several common unit arrangements for this type of application. The Millennium Chiller has been designed to be readily adapted to the requirements of these various arrangements. Parallel Arrangement (Refer to Fig. 1) Chillers may be applied in multiples with chilled and condenser water circuits connected in parallel between the units. Fig. 1 21

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FIG. 1 PARALLEL COOLERS PARALLEL CONDENSERS 22
FIG. 2 SERIES COOLERS PARALLEL CONDENSERS

LD00508

SOUND AND VIBRATION CONSIDERATIONS A Millennium chiller is not a source of objectionable sound and vibration in normal air conditioning applications. Neoprene isolation mounts are furnished as standard with each unit. Optional level-adjusting spring isolator assemblies designed for 1" static deflection are available.
VENTILATION The ASHRAE Standard 15 Safety Code for Mechanical Refrigeration requires that all machinery rooms be vented to the outdoors utilizing mechanical ventilation by one or more power-driven fans. This standard, plus National Fire Protection Association Standard 90A, state, local and other related codes should be reviewed for specific requirements. Since the Millennium chiller motor is aircooled, ventilation should allow for the removal of heat from the motor. In addition, the ASHRAE Standard 15 requires a refrigerant vapor detector to be employed for all refrigerants. It is to be located in area where refrigerant from a leak would be likely to concentrate. An alarm is to be activated and the mechanical ventilation started at a value no greater than the TLV (Threshold Limit Value) of the refrigerant. ELECTRICAL CONSIDERATIONS Motor Voltage Low voltage motors (200 - 600 volts) are furnished with six leads. Medium voltage (2300 - 4160 volts) motors have three leads. Motor circuit conductor size must be in accordance with the National Electrical Code (NEC), or other applicable codes, for the motor fullload amperes (FLA). Flexible conduit should be used for the last several feet to the chiller in order to provide vibration isolation. Table 2 lists the allowable variation in voltage supplied to the chiller motor. The unit nameplate is stamped with the specific motor voltage and frequency for the appropriate motor. Starters The chiller is available with a factory-mounted and wired YORK Solid State Starter for 200 - 600 volt applications. Other types of remote mounted starters are available. These electro-mechanical starters must be furnished in accordance with YORK Standard R-1079 Specification. This will ensure that starter components, controls, circuits, and terminal markings will be suitable for required overall system performance. Controls A 115 volt, single phase, 60 or 50 Hertz (4.5 kVa) power supply must be furnished to the chiller from a separate, fused disconnect or from a control transformer included as an option with electro-mechanical starters. No field control wiring is required, when the YORK SSS is supplied. Copper Conductors Only copper conductors should be connected to compressor motors and starters. Aluminum conductors have proven to be unsatisfactory when connected to copper lugs. Aluminum oxide and the difference in thermal conductivity between copper and aluminum cannot guarantee the required tight connection over a long period of time. Power Factor Correction Capacitors Capacitors can be applied to a chiller for the purpose of power factor 23

D-D 6'2" 6'9-7/8" 6'3-3/8" 7'9-1/8" 1'7-3/4" 1'5-1/4"
6'2" 6'9-7/8" 6'3-3/8" 7'9-1/8" 1'7-3/4" 1'5-1/4"
REFRIGERANT RELIEF VALVE CONNECTIONS VESSEL COOLER CONDENSER OIL SEPARATOR SIZE 1" FPT SINGLE 1" FPT DUAL 1" FPT DUAL & 2" NOM RUPTURE DISK
NOTES: 1. All dimensions are approximate. Certified dimensions are available on request. 2. Determine overall unit length by adding water box depth from table below to tube sheet length: TYPE COMPACT WATER BOX RETURN BOX WITH VICTAULIC CONNECTION WITH FLANGED CONNECTION COOLER CODE D E F CONDENSER CODE D E F
0'5-1/2" 0'5-1/2" 0'7-3/4" 0'5-1/4" 0'5-1/4" 0'7-5/8" 1'1-7/8" 1'1-7/8" 1'3-1/8" 1'1-7/8" 1'1-7/8" 1'3-1/8" 1'2-3/8" 1'2-3/8" 1'3-5/8" 1'2-3/8" 1'2-3/8" 1'3-5/8"
3. Unit height includes steel mounting plates under tube sheets. To determine overall installed height, add 7/8" for neoprene isolators (1" for optional spring isolators). YORK INTERNATIONAL
COMPACT WATER BOX NOZZLE ARRANGEMENTS

LD00274

NOZZLE ARRANGEMENTS
NO. OF PASSES 1 COOLER IN-OUT A-H H-A E-B D-C M-J L-K P-F G-N COND. IN-OUT P-Q Q-P R-S T -U COOLER CODE B C D E F

COOLER NOZZLE DIMENSIONS

NOZZLE SIZE (in.) No. of Passes DIMENSIONS (in.) AA 10 12-3/4 12-7/8 12-7/8 14-5/8 BB 11-3/4 13-7/8 15-1/4 15-3/8 17-1/2 CC 14-3/4 16-3/4 19-1/4 19-3/8 22-1/4 DD 17-3/4 19-5/8 23-1/4 23-3/EE 19-1/2 20-3/4 25-7/8 25-7/8 29-7/8 FF 5 5-7/8 6-5/8 7-1/2 9-1/4
CONDENSER NOZZLE DIMENSIONS
NOZZLE SIZE (in.) CONDENSER CODE No. of Passes 1 B C D, E F NOTES: 1. All dimensions are approximate (shown for 150 psig DWP water side). Certified dimensions are available on request. 2. Standard water nozzles are furnished as welding stub-outs with Victaulic grooves, allowing the option of welding, flanges, or use of Victaulic couplings. Factory installed, class 150 (ANSI B16.5, round slip-on, forged carbon steel with 1/16" raised face), water flanged nozzles are optional. Companion flanges, nuts, bolts and gaskets are not furnished. 3. Add 7/8" to all height dimensions to obtain installed height when using neoprene mounts or 1" for optional spring vibration isolator mounts. 4. One, two and three pass nozzle arrangements are available only in pairs shown and for all shell codes. Any pair of cooler nozzles may be used in combination with any pair of condenser nozzles. 5. Condenser water must enter the water box through the bottom connection for proper operation of the subcooler to achieve rated performance. 6. Cooler water must enter the water box through the bottom connection to achieve rated performance. 7. Connected piping should allow for removal of compact water box for tube access and cleaning. 12 GG 13 11-1/2 14-1/DIMENSIONS (in.) HH JJ KK 4-3/7-3/4

NOZZLE SIZE (in.) No. of Passes 14 12
DIMENSIONS (mm) GG 432 HH 622 JJ 813 KK 197

LD00289

SHELL CODES COOLER - COND. B-B B-C C-B C-C B-B B-C C-B C-C C-D D-C D-D D-C D-D E-E E-F F-E F-F

1292mm

3048mm

1588mm

1588mm 1588mm 1880mm 1880mm 1943mm 1994mm 2057mm
3048mm 3048mm 3048mm 3658mm 3658mm

48mm 48mm 48mm 48mm 48mm

64mm 64mm 64mm 64mm 64mm

S2, S3

NOTES: 1. All dimensions are approximate. Certified dimensions are available on request. 2. Service clearance must be allowed as follows: 610mm at rear (condenser side) of unit and overhead. 915mm at front (cooler/control center side) of unit. 3050mm (3660mm on S4/S5 compressor) on either end of unit for tube cleaning or replacement. A doorway or properly located opening may be used. 610mm on either end to allow for removal of water boxes for tube access and cleaning. 3. No special foundation required. Floor must be flat and level within 6mm, capable of carrying the operating weight of the unit. 4. Unit has four steel plate foot supports located under the tube sheets at each corner of shell package. Neoprene isolator pads are field installed between foot support and floor. 5. All four neoprene isolator pads are identical. Pads are 25mm thick. Unit operating weights under 7423 kg. use 114mm x 114mm isolators; weights above 7423 kg. use 114mm x 152mm isolators. 6. Loading per isolator pad equals operating weight divided by four. YORK INTERNATIONAL

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LD00280

1-Pass C 719

DIMENSIONS 2-Pass B C 413 718
(mm) D 838 E 241 A 432 B 387 3-Pass C 718 D 743 E 216

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COOLER NOZZLE SIZES

Cooler Code 1 B C D E F 12 Nozzle Size (In.) No. of Passes 6 8
WEIGHTS (To be added to Metric Unit Weights on pages 46-47)
Cooler Code B C D E F Shipping Weight Increase Kg 1-Pass 582 2-Pass 398 3-Pass 514 Operating Weight Increase Kg 1-Pass 864 2-Pass 3-Pass 698 764

LD00283

LD00284

LD00285

LD00286

Condenser Size B C D E F

DIMENSIONS (mm) A 533 1-Pass B C D E 267 A 533 B 470 2-Pass C 638 D 972 E 267

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LD00288

CONDENSER NOZZLE SIZES

Condenser Code B C D E F Shipping Weight Increase Kgs 1-Pass 456 2-Pass 209 Operating Weight Increase Kgs 1-Pass 721 2-Pass 320

Weights Metric

50 AND 60 HERTZ
SHELL CODE COOLER COND. BA-BA BA-BB BB-BA BB-BB BA-CA BA-CB BB-CA BB-CB CA-BA CA-BB CB-BA CB-BB CA-CA CA-CB CB-CA CB-CB BA-BA BA-BB BB-BA BB-BB BA-CA BA-CB BB-CA BB-CB CA-BA CA-BB CB-BA CB-BB CA-CA CA-CB CB-CA CB-CB BA-BA BA-BB BB-BA BB-BB BA-CA BA-CB BB-CA BB-CB CA-BA CA-BB CB-BA CB-BB CA-CA CA-CB CB-CA CB-CB SHIPPING WT. (Kgs.) 3,805 3,873 3,853 3,921 4,147 4,271 4,205 4,330 4,217 4,286 4,322 4,390 4,541 4,665 4,646 4,770 3,835 3,905 3,883 3,951 4,177 4,301 4,235 4,360 4,247 4,315 4,352 4,420 4,571 4,695 4,676 4,800 4,782 4,850 4,830 4,898 5,125 5,249 5,183 5,308 5,195 5,264 5,299 5,367 5,509 5,633 5,614 5,738 OPERATING WT. (Kgs.) 4,091 4,189 4,167 4,265 4,534 4,712 4,620 4,799 4,574 4,672 4,723 4,820 4,999 5,177 5,147 5,325 4,121 4,219 4,197 4,295 4,524 4,742 4,650 4,829 4,604 4,702 4,753 4,850 5,029 5,207 5,177 5,355 5,069 5,167 5,145 5,243 5,473 5,691 5,598 5,777 5,553 5,650 5,700 5,798 5,967 6,145 6,116 6,293 REFRIGERANT CHARGE (Kgs. R-22) REFRIGERANT CHARGE (Kgs. R-134a) SHELL COMCODE PRESCOOLER SOR COND. CA-DA CA-DB CB-DA CB-DB DA-CA DA-CB DB-CA DB-CB DC-CA DC-CB DA-DA DA-DB DB-DA DB-DB DC-DA DC-DB CA-CA CA-CB CB-CA CB-CB CA-DA CA-DB CB-DA CB-DB DA-CA DA-CB DB-CA DB-CB DC-CA DC-CB DA-DA DA-DB DB-DA DB-DB DC-DA DC-DB DA-CA DA-CB DB-CA DB-CB DC-CA DC-CB DA-DA DA-DB DB-DA DB-DB DC-DA DC-DB S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 S4 S4 S4 S4 S4 S4 S4 S4 S4 S4 S4 S4 SHIPPING WT. (Kgs.) 6,059 6,293 6,164 6,398 6,030 6,159 6,200 6,324 6,362 6,486 6,599 6,834 6,745 6,979 6,902 7,136 5,606 5,730 5,711 5,836 6,157 6,391 6,261 6,497 6,122 6,246 6,287 6,411 6,450 6,573 6,687 6,921 6,832 7,066 6,989 7,224 7,742 7,866 7,907 8,031 8,070 8,194 8,307 8,543 8,453 8,688 8,611 8,812 OPERATING WT. (Kgs.) 6,697 7,034 6,846 7,182 6,568 6,746 6,808 6,985 7,054 7,232 7,314 7,650 7,533 7,869 7,909 7,612 6,066 6,243 6,213 6,391 6,796 7,133 6,946 7,282 6,656 6,833 6,895 7,073 7,141 7,319 7,401 7,737 7,620 7,957 7,862 8,198 8,277 8,455 8,517 8,695 8,764 8,940 9,023 9,360 9,243 9,580 9,486 9,821 REFRIGERANT CHARGE (Kgs. R-22) REFRIGERANT CHARGE (Kgs. R-134a) 336 336

printer. Data logs to a printer at a set programmable interval. This data can be preprogrammed to print from 1 minute to 1 day. 13. The capability to interface with a building automation system to provide: a. Remote chiller start and stop b. Remote leaving chiller liquid temperature adjust c. Remote current limit setpoint adjust d. Remote ready to start contacts e. Safety shutdown contacts f. Cycling shutdown contacts g. Run contacts COMPRESSOR MOTOR STARTER (OPTION, 200 - 600V) The chiller manufacturer shall furnish a reduced-voltage Solid State Starter for the compressor motor. Starter shall be factory-mounted and wired on the chiller. The starter shall provide, through the use of silicon controlled rectifiers, a smooth acceleration of the motor without current transitions or transients. The starter enclosure shall be NEMA 1, with a hinged access door with lock and key. Electrical lugs for incoming power wiring shall be provided. Standard features include: digital readout at the OptiView Control Center of the following: Display Only: 3-phase voltage A, B, C 3-phase current A, B, C Input power (kW) kW Hours Starter Model Motor Run (LED) Motor Current % Full Load Amps Current Limit Setpoints Pulldown Demand Time Left Programmable: Local Motor Current Limit Pulldown Demand Limit Pulldown Demand Time Other features include: low-line voltage, 115-volt control transformer; three-leg sensing overloads; phase rotation 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. Optional unitmounted circuit breaker includes ground fault protection and provides 65,000 amp. Short circuit withstand rating in accordance with UL Standard 508. A non-fused disconnect switch is also available. Both options are padlockable. REMOTE ELECTRO-MECHANICAL COMPRESSOR MOTOR STARTER (OPTIONAL) A remote electro-mechanical starter of the R-1051 type shall be furnished for each compressor motor. The starter shall be furnished in accordance with the chiller manufacturers starter specifications and as specified elsewhere in these specifications. PORTABLE REFRIGERANT STORAGE/RECYCLING SYSTEM A portable, self-contained refrigerant storage/recycling system shall be provided consisting of a refrigerant compressor with oil separator, storage receiver, water cooled condenser, filter drier and necessary valves and hoses to remove, replace and distill refrigerant. All necessary controls and safety devices shall be a permanent part of the system. START-UP AND OPERATOR TRAINING The chiller manufacturer shall include the services of a factory-trained, field service representative to supervise the final leak testing, charging and the initial start-up and concurrent operator instruction.

Metric Conversion Tables

MEASUREMENT CAPACITY POWER FLOW RATE LENGTH WEIGHT VELOCITY PRESSURE DROP MULTIPLY THIS ENGLISH VALUE TONS REFRIGERANT EFFECT (ton) KILOWATTS (kW) HORSEPOWER (hp) GALLONS / MINUTE (gpm) FEET (ft) INCHES (in) POUNDS (lb) FEET / SECOND (fps) FEET OF WATER (ft) POUNDS / SQ. INCH (psi) BY 3.516 NO CHANGE 0.7457 0.0631 304.8 25.4 0.4536 0.3048 2.989 6.895 TO OBTAIN THIS METRIC VALUE KILOWATTS (kW) KILOWATTS (kW) KILOWATTS (kW) LITERS / SECONDS (L/s) MILLIMETERS (mm) MILLIMETERS (mm) KILOGRAMS (kg) METERS / SECOND (m/s) KILOPASCALS (k Pa) KILOPASCALS (k Pa)

Temperature

To convert degrees Fahrenheit (F) to degrees Celsius (C), subtract 32 and multiply by 5/9 or 0.5556. To convert a temperature range (i.e., 10F or 12F chilled water range) from Fahrenheit to Celsius, multiply by 5/9 or 0.5556.
Integrated Part Load Value (IPLV)
In the English I-P system, IPLV is calculated by the following formula. A full explanation is shown on page 4: 1 IPLV*= 0.01 A = = = = kW kW kW kW + / / / / 0.42 B at at at at + 0.45 C Load Load Load Load @ @ @ @ + 0.12 D ECFT ECFT ECFT ECFT

Efficiency

In the English I-P system, chiller efficiency is measured in kW / ton: kW / ton = kW input tons refrigerant effect

Where: A B C D

ton ton ton ton

100% 75% 50% 25%

85F 75F 65F 65F
In SI Metric, the formula is: IPLV* =0.01A + 0.42B + 0.45C + 0.12D = = = = COP COP COP COP at at at at 100% Load @ 29.4C ECFT 75% Load @ 23.9C ECFT 50% Load @ 18.3C ECFT 25% Load @ 18.3C ECFT
In the SI Metric system, chiller efficiency is measured in Coefficient of Performance (COP). COP = kW refrigeration effect kW input kW / ton and COP are related as follows: kW / ton = 3.516 COP

3.516 kW / ton

* NOTE: The Non-Standard Part-Load Value (NPLV) uses the IPLV formula with the following exceptions: the ECFT for part-load points varies linearly from the selected EFT to 65F (18.3C) from 100% to 50% loads, and fixed at 65F (18.3C) for 50% to 0% loads.

FOULING FACTOR

ENGLISH I-P (ft2 F hr/BTU) 0.0001 0.00025 0.0005 0.00075 EQUIVALENT SI METRIC (M2 K/kW) 0.018 0.044 0.088 0.132
P.O. Box 1592, York, Pennsylvania USA 17405-1592 Copyright by York International Corporation 2000 Form 160.80-EG1 (900) New Release
Tele. 800-861-1001 www.york.com
Subject to change without notice. Printed in USA ALL RIGHTS RESERVED

Supersedes: Nothing

FORM 160.47-PW11 (798)

PRODUCT DRAWING

YORK INTERNATIONAL CORPORATION P.O. Box 1592, YORK, PA 17405
WIRING DIAGRAM MILLENNIUM YS (STYLE D) ROTARY SCREW CHILLER MICROCOMPUTER CONTROL CENTER WITH ELECTRO-MECHANICAL STARTER
PURCHASER ____________________________________________ JOB NAME _______________________________________________ LOCATION _______________________________________________ ENGINEER ______________________________________________

DATE ________

CONTRACTOR _______________________ ORDER NO. __________________________ YORK CONTRACT NO. _________________ YORK ORDER NO. ____________________ REFERENCE

APPROVAL

CONSTRUCTION
JOB DATA: CHILLER MODEL NO. YS _________________ NO. OF UNITS __________________________ COMPRESSOR MOTOR ________________ VOLTS, 3-PHASE, ______________________________ H Z
REMARKS: ________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________

ELEMENTARY DIAGRAM

REF. 035-15940-000, REV A

LD03204

(Contd. on pages 3 & 4)

YORK INTERNATIONAL

FORM 160.47-PW11

LD03205

TIMING DIAGRAM

LD03206

LD03207

LEGEND

LD03208
NOTES: 1. This wiring diagram describes the standard electronic control scheme for use with an Electro-Mechanical Starter. For details of standard modifications, refer to Product Drawing Form 160.47-PW5. 2. Field wiring to be in accordance with the National Electrical Code as well as all other applicable codes and specifications. See Product Drawing Form 160.47-PW3 for field wiring connections. 3. Numbers along the left side of diagram are line identification numbers. The numbers along the right side indicate the line number location of relay contacts. An underlined contact location signifies a normally closed contact. 4. Main control panel Class 1 field wiring terminal connection points are indicated by numbers within a rectangle, i.e. 15. Main control panel factory wiring terminal connection points are indicated by numbers within a triangle, i.e. 5. Component terminal markings are indicated by numbers within a circle, i.e. C1. Numbers adjacent to circuit lines are the circuit identification numbers. 5. To cycle on and off automatically with contacts other than those shown, install a cycling device between terminals 1 & 13 (line 27) (see Note 9). If a cycling device is installed, jumper must be removed between terminals 1 & 13. 6. Compressor motor starter with starter interlock contacts (rated 0.2 amps @ 120 volts A.C.) must be per Form 160.47-PW7. Control panel shall be grounded. 7. Units installed in Canada must have a field supplied CSA approved 30 amp disconnect switch and a 15 amp dual element fuse mounted external to control panel for 115 volt control supply. 8. To stop unit and not permit it to start again, install a stop device between terminals 1 & 8 (line 23) (see Note 9). A Remote start-stop switch may be 6

9. 10. 11.

14. 15.
connected to terminals 1 , 7 & 8 (lines 22 and 23) (see Note 9). Remote start-stop switch (line 22) is operative only in the remote operating mode. Device contact rating to be 5 miliamperes at 115 volts A.C. Contact rating is 5A resistive @ 120 volts A.C. or 240 volts A.C. To check motor rotation on initial start-up, install momentary switch between terminals 24 & 25 (line 35). Depress start switch, after approx. 30 seconds, jog motor with momentary switch. When proper rotation is obtained, replace momentary switch with jumper. Switch must have a minimum contact rating of 2 FLA, 10 LRA at 115 volts A.C. Solid state motor overload (CM) is set to trip at 105% FLA. During momentary power interruption (power fault), contact also opens for 1 second. For high and low voltage units, the factory supplied jumper between 1 & 53 must be removed when Electro-Mechanical starter overloads and/or safety devices are used. For high voltage (2300-4160) UL and CSA approved units only, electro-mechanical compressor motor starter overloads (normally closed) must be connected between 1 & 53. Contact rating is 5 amps resistive @ 250 volts A.C. & 30 volts D.C., 2 amp inductive (0.4 PF) @ 250 volts A.C. & 30 volts D.C. Each 115VAC field-connected inductive load, i.e. relay coil, motor starter coil, etc. shall have a transient suppressor wired in parallel with its coil, physically located at the coil. Spare transient suppressors and control circuit fuses are supplied in a bag attached to the top of the hinged panel. Low oil pressure (LOP) safety shutdown occurs when oil pressure evaporator pressure differential is less that 15 psi following a 3 minute bypass at compressor start.

PRESSURE TEMPERATURE CHART
* Function provided by condenser transducer

LD03209

CONNECTION DIAGRAM
(Contd. on pages 10 & 11)

LD03210

LD0321 1
P.O. Box 1592, YORK, Pennsylvania USA 17405-1592 Copyright by YORK International Corporation 1997 Form 160.47-PW11 (798) Supersedes: Nothing
Subject to change without notice. Printed in USA ALL RIGHTS RESERVED