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JOHNSON CONTROLS

FORM 160.80-EG1 (808)

REFRIGERANT ISOLATION

The condenser shell serves as a refrigerant receiver

to store the system charge during servicing. Manually

operated isolation valves are located at the inlet and

outlet of the condenser. Valves are also provided to fa-

cilitate removal of the refrigerant from the system when

necessary.

OPTIVIEw CONTROL CENTER
General

The chiller is controlled by a stand-alone microprocessor-

based control center. The chiller control panel provides

control of chiller operation and monitoring of chiller sen-

sors, actuators, relays and switches.

Control Panel

The control panel includes a 10.4 inch diagonal color liquid

crystal display (LCD) surrounded by “soft” keys, which

are redefined based on the screen displayed at that time,

mounted in the middle of a keypad interface and installed

in a locked enclosure. The screen details all operations

and parameters, using a graphical representation of the

chiller and its major components. Panel verbiage is avail

able in other languages as an option with english always

available. Data can be displayed in either english or Metric

units. Smart Freeze point protection will run the chiller at

36°F (2.22°C) leaving chilled water temperature and not

experience nuisance trips on low water temperature. The

sophisticated program and sensor monitors the chiller wa-

ter temperature to prevent freeze-up. when needed, Hot

Gas Bypass is available as an option. The panel displays

countdown timer messages so the operator knows when

functions are starting and stopping. every programmable

point has a pop-up screen with the ranges included, so

the chiller can not be programmed to operate outside of

its design limits.

The control panel includes a thermal ice storage control

mode which enhances system performance during ice

building operation when compared to standard cooling

logic. In thermal storage control mode, the chiller will

operate at 100% load until the setpoint shutdown tem-

perature is reached. To add greater operating flexibility

and eliminate unnecessary chiller cycling, two different

Low water (Liquid) Temperature Restart Thresholds are

programmable, one for the ice mode and one for the stan-

dard cooling mode. The chiller has the capability to remain

in the standard control mode for temperatures between

20°F to 70°F (–6.7°C to 21.1°C) for applications involving

a process cooling duty that requires leaving chilled liquid

temperature setpoint control.

The chiller control panel also provides:

1. System operating information including:

• Return and Leaving Chilled water Temperature

• Return and Leaving Condenser water Tem

perature

• evaporator and Condenser Saturation Tem

perature

• Oil pressure at Compressor and Oil Filter

Differential

• percent Motor Current

• evaporator and Condenser Saturation Tem

perature

• Compressor Discharge Temperature

• Oil Temperature

• percent Slide Valve position

• Operating Hours

• Number of Unit Starts

2. Digital programming of Setpoints Through The Uni-

versal Keypad Including:

• Leaving Chilled water Temperature

• percent Current Limit

• pull-Down Demand Limiting

• Six-week Schedule For Starting and Stopping

The Chiller, pumps and Tower

• Remote Reset Temperature Range

3. Status Messages Indicating:

• System Ready To Start

• System Running

• System Coastdown

• System Safety Shutdown – Manual Restart

• System Cycling Shutdown – Auto Restart

• System prelube

• Start Inhibit

4. The text displayed within the system status and sys-

tem details field is displayed as a color-coded mes

sage to indicate severity: red for safety fault; orange

for cycling faults; yellow for warnings; and green for

normal messages.

5. Safety shutdowns are enunciated through the display

and the status bar, and consist of system status, sys-

tem details, day, time, cause of shutdown, and type of

restart required. Safety shutdowns with a fixed speed

drive include:

• evaporator – Low pressure

• evaporator – Low pressure - Smart Freeze

• evaporator – Transducer or Leaving Liquid

probe

Содержание YS

Страница 1: ...FORM 160 80 EG1 808 Model YS Rotary Screw Liquid Chillers Design Level E 100 thru 675 tons 315 thru 2375 KW R 22 and R 134a Rated in Accordance with the latest edition of ARI STANDARD 550 590...

Страница 2: ...1 Cooler Nozzle Arrangements 42 Condenser Nozzle Arrangements 44 WEIGHTS METRIC 46 GUIDE SPECIFICATIONS 48 Metric Conversion tABLES 53 NOMENCLATURE The model number denotes the following characteristi...

Страница 3: ...must be cleaned and the refrigerant replaced YORK Millennium screw chillers eliminate this risk by utilizing air cooled motors Refrig erant never comes in contact with the motor preventing contaminati...

Страница 4: ...rements and are part of the ARI Certification Program 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 me...

Страница 5: ...ce Access Level Date and Time All date representations and calculations use four digits for the year to provide Year 2000 compli ance During the Start Sequence and System Lockout Delay the system stat...

Страница 6: ...torage control mode the unit will remain at 100 load until the setpoint shutdown temperature is reached To add greater operating flexibility and eliminate unnec essary chiller cycling two different Lo...

Страница 7: ...Temperature Setpoints Restart Offset Ice Storage Active LED Programmable Local Leaving Chilled Liquid Temperature Range Local Leaving Chilled Liquid Temperature Setpoint Leaving Chilled Liquid Tempera...

Страница 8: ...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 Chil...

Страница 9: ...other individual screens but to cut down on needless search ing they can all be found on this screen This screen also serves as a gateway to a sub screen for defining the setup of general system para...

Страница 10: ...isplay Only Time Remaining Until Next Print Programmable Log Start Time Output Interval Automatic Printer Logging Enabled Disabled Print Type Print Report Print All Histories The SALES ORDER screen al...

Страница 11: ...ollection 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 Se...

Страница 12: ...ting Fault Data 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...

Страница 13: ...n Capacity Control Capacity control is achieved by use of a slide valve which provides fully modulating capacity control from 100 to 10 of full load The slide valve is actuated by oil pressure control...

Страница 14: ...rovides extra wall thickness up to twice as thick and non work hardened copper at the support location extending the life of the heat exchangers Each tube is roller expanded into the tube sheets provi...

Страница 15: ...thermal storage control mode the chiller will operate at 100 load until the setpoint shutdown tem perature is reached To add greater operating flexibility and eliminate unnecessary chiller cycling tw...

Страница 16: ...Requesting Fault Data 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...

Страница 17: ...h Act A D Merkblatter Isolation Mounting The unit is provided with four vibration isolation mounts consisting of 1 25 4 mm thick neoprene isolation pads for field mounting under the steel mounting pad...

Страница 18: ...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 chille...

Страница 19: ...re available for condenser and or evaporator knock down shipment The chiller can be shipped knocked down into major assemblies evaporator condenser driveline etc as required to rig into tight spaces T...

Страница 20: ...20 JOHNSON CONTROLS Unit Components...

Страница 21: ...21 JOHNSON CONTROLS FORM 160 80 EG1 808 29040A OIL SEPARATOR MOTOR TERMINAL BOX CONDENSER REAR VIEW...

Страница 22: ...0 91 m s and 3 66 m s Condenser flow rates are permitted between 3 33 ft sec and 12 ft sec 1 01 m s and 3 66 m s Variable flow applications are possible TABLE 1 WATER FLOW RATE LIMITS GPM L s SHELL CO...

Страница 23: ...Cooler and condenser water boxes are equipped with plugged vent and drain connections If desired vent and drain valves may be installed with or without piping to an open drain Pressure gauges with st...

Страница 24: ...C to 24 F 4 4 C leaving brine temperatures This performance is enhanced with the standard thermal storage control mode described on page 6 Particular attention must be paid to the application of two...

Страница 25: ...ooled ventilation should allow for the removal of heat from the motor In addition the ASHRAE Standard 15 requires a refriger ant vapor detector to be employed for all refrigerants It is to be located...

Страница 26: ...r The only additional load on the circuit for the chiller would be the control transformer unless it is supplied by a separate source 125 of compr FLA of all other Min Circuit Ampacity motor amps load...

Страница 27: ...65 618 675 726 778 824 880 LRA 1230 1360 1380 1730 1950 2130 2598 2598 3111 3111 3450 3810 3810 4400 5000 5600 5000 5488 480 FLA 169 194 219 258 292 328 359 364 423 452 503 541 592 647 696 746 790 843...

Страница 28: ...2144 2464 2590 2806 3050 3375 3700 3810 4400 4500 4892 5600 5491 400 FLA 194 223 261 294 329 360 378 416 457 505 543 599 656 706 744 799 850 LRA 1458 1458 1726 1990 2257 2594 2726 2954 3211 3553 3895...

Страница 29: ...5 CC 5 CD CA CB BA BB CA CB 5 CE 5 CF S2 BA BB BA BB CA CB 5 CC 5 CD CA CB BA BB CA CB DA DB 5 CE 5 CF DA DB DC CA CB DA DB 5 CG 5 CH S3 CA CB CA CB DA DB 5 CC 5 CD 5 CE 5 CF DA DB DC CA CB DA DB 5 C...

Страница 30: ...34a UNITS 50 and 60 Hz REFRIGERANT RELIEF VALVE CONNECTIONS Refer to Tables 6 and 7 on pages 26 27 for valid compressor shell motor combinations DIMENSION S0 and S1 COMPRESSOR S2 COMPRESSOR S2 and S3...

Страница 31: ...OMPRESSOR SHELL CODES Evaporator Condenser D C D D E E E F F E F F A 6 2 6 2 6 2 6 4 1 2 6 6 1 2 6 9 A1 6 9 7 8 6 9 7 8 6 9 7 8 7 0 3 8 7 3 5 8 7 2 5 8 A2 6 3 3 8 6 3 3 8 B OVERALL HEIGHT3 7 9 1 8 7 9...

Страница 32: ...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 wat...

Страница 33: ...the unit 4 Millennium 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...

Страница 34: ...ensions In 1 Pass 2 Pass 3 Pass A B C D E A B C D E A B C D E B 15 1 2 15 1 4 19 7 3 4 13 1 2 9 1 2 19 21 6 3 4 13 1 2 11 19 19 1 2 6 3 4 C 17 1 2 16 3 4 20 3 4 8 3 4 13 1 2 11 1 4 20 3 4 22 1 4 6 3 4...

Страница 35: ...ges 36 37 MOTOR END MOTOR END COMPR END COMPR END EVAPORATOR NOZZLE ARRANGEMENTS MARINE WATER BOXES R 22 R 134a UNITS Evaporator Code Nozzle Size In No of Passes 1 2 3 B 8 6 4 C 10 6 6 D 12 8 6 E 12 8...

Страница 36: ...MENTS MARINE WATER BOXES R 22 R 134a UNITS DIMENSIONS In Condenser Size 1 Pass 2 Pass A B C D E A B C D E B 15 1 2 16 7 8 17 5 8 7 3 4 13 1 2 11 1 8 17 5 8 22 5 8 6 3 4 C 17 1 2 16 3 4 18 1 2 8 3 4 15...

Страница 37: ...on pages 36 37 1 PASS 2 PASS COMPR END COMPR END MOTOR END MOTOR END CONDENSER NOZZLE ARRANGEMENTS MARINE WATER BOXES R 22 R 134a UNITS Condenser Code Nozzle Size In No of Passes 1 2 B 8 6 C 10 8 D 1...

Страница 38: ...A CA S2 12 146 13 155 680 612 CA CB S2 12 419 13 547 680 612 CB CA S2 12 377 13 483 680 612 CB CB S2 12 650 13 874 680 612 SHELL CODE EVAP COND COM PRES SOR SHIP PING WT Lbs OPER ATING WT Lbs REFRIG E...

Страница 39: ...4 24 171 27 076 1 620 FC EB S4 25 141 27 929 1 620 FA FA S4 25 977 28 655 2 000 1 800 FA FB S4 27 187 30 256 2 000 1 800 FB FA S4 26 626 29 552 2 000 1 800 FB FB S4 27 830 31 153 1 900 1 710 FC FA S4...

Страница 40: ...for optional spring isolators Dimensions Metric Refer to Tables 6 and 7 on pages 26 27 for valid compressor shell motor combinations S0 and S1 COMPRESSOR S2 COMPRESSOR S2 and S3 COMPRESSOR SHELL CODE...

Страница 41: ...rs NOTES S4 COMPRESSOR S4 and S5 COMPRESSOR SHELL CODES Evaporator Condenser D C D D E E E F F E F F A TUBE SHEET WIDTH 1 880 1 880 1 880 1 943 1 994 2 057 A1 WITH SOLID STATE STARTER 2 080 2 080 2 08...

Страница 42: ...ailable only in pairs shown and for all shell codes Any pair of evaporator nozzles may be used in combination with any pair of condenser nozzles 5 Condenser water must enter the water box through the...

Страница 43: ...rating 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 fl...

Страница 44: ...MOTOR END COMPR END COMPR END MOTOR END MOTOR END COMPR END COMPR END Cooler Size 1 Pass 2 Pass 3 Pass A B C D E A B C D E A B C D E B 394 387 483 197 343 241 483 533 171 343 279 483 495 171 C 445 425...

Страница 45: ...pages 46 47 MOTOR END COMPR END COMPR END MOTOR END COOLER NOZZLE ARRANGEMENTS MARINE WATER BOXES R 22 R 134a UNITS EVAPORATOR Code Nozzle Size In No of Passes 1 2 3 B 8 6 4 C 10 6 6 D 12 8 6 E 12 8 6...

Страница 46: ...MPR END COMPR END DIMENSIONS mm CONDENSER NOZZLE ARRANGEMENTS MARINE WATER BOXES R 22 R 134a UNITS Condenser Size 1 Pass 2 Pass A B C D E A B C D E B 394 429 448 197 343 283 448 575 171 C 445 425 470...

Страница 47: ...re on motor end 1 PASS 2 PASS MOTOR END MOTOR END COMPR END COMPR END CONDENSER NOZZLE ARRANGEMENTS MARINE WATER BOXES R 22 R 134a UNITS Condenser Code Nozzle Size In No of Passes 1 2 B 8 6 C 10 8 D 1...

Страница 48: ...S2 5 264 5 650 253 CB BA S2 5 299 5 700 253 CB BB S2 5 367 5 798 253 CA CA S2 5 509 5 967 308 278 CA CB S2 5 633 6 145 308 278 REFRIG REFRIG SHELL COM SHIP OPER ERANT ERANT CODE PRES PING ATING CHARGE...

Страница 49: ...907 816 FB FB S5 12 751 14 258 862 776 FC FA S5 12 591 14 066 862 776 FC FB S5 13 140 14 789 862 776 REFRIG REFRIG SHELL COM SHIP OPER ERANT ERANT CODE PRES PING ATING CHARGE CHARGE COOLER SOR WT WT...

Страница 50: ...frigerant HCFC 22 or HFC 134a and oil Alternatively the chiller shall be shipped with the compressor control panel and oil sepa rator removed Form 3 or also with the shells separated Form 7 to allow r...

Страница 51: ...on Evaporator Evaporator shall be of the shell and tube flooded type designed for 300 psig 2069 KPa working pressure on the refrigerant side Shell shall be fabricated from rolled carbon steel plate wi...

Страница 52: ...ng chilled water temperature and not have nuisance trips on low water temperature The sophisticated program and sensor shall monitor the chiller water temperature to prevent freeze up When needed Hot...

Страница 53: ...High instantaneous current c High phase X heatsink temperature running d 105 motor current overload e Motor or starter current imbalance f Phase X shorted SCR g Open SCR h Phase rotation 6 Cycling shu...

Страница 54: ...ith lock and key Electrical lugs for incoming power wiring shall be provided Guide Specifications continued Standard features include digital readout at the OptiView Control Center of the following Di...

Страница 55: ...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...

Страница 56: ...English I P system chiller efficiency is measured in kW ton kW ton kW input tons refrigerant effect In the SI Metric system chiller efficiency is measured in Coefficient of Performance COP COP kW ref...

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