York YDAJ87KU6 User manual

INSTALL., OPER., MAINT.
RecipPak LIQUID CHILLERS
AIR COOLED  RECIPROCATING HERMETIC
Supersedes: See Back Form 150.75-NM2 (196)
60 HZ MODELS
YDAJ87KU6, YDAJ88MU6, YDAJ99MW6
50 HZ MODELS
YDAJ87HU7, YDAJ97KU7, YDAJ98MU7,
YDAJ99MU7, YDAJ99MW9
STYLE A*
370 - 450 TONS
00022TG
*With EPROMs 031-01096-009 & 031-01300-002 (Standard, Brine & Metric Models, Combined)
MASTER SLAVE
200, 230, 460-3-60
Unit shown with optional
Decorative Tamperproof Enclosure

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TABLE OF CONTENTS
GENERAL INFORMATION ........................................................................... 2
UNIT NOMENCLATURE ............................................................................... 3
OPERATIONAL LIMITATIONS ....................................................................... 7
PHYSICAL DATA ......................................................................................... 8
DIMENSIONS .............................................................................................. 9
ELECTRICAL DATA .................................................................................... 10
INSTALLATION ........................................................................................... 12
MASTER MODULE WIRING DIAGRAM ..................................................... 20
SLAVE MODULE WIRING DIAGRAM ........................................................ 26
UNIT CONTROLS AND OPERATION .......................................................... 32
COMPRESSOR CAPACITY CONTROL ..................................................... 77
SYSTEM START-UP CHECKLIST / REPORT............................................. 78
PREVENTATIVE MAINTENANCE .............................................................. 82
OPTIONS ................................................................................................... 83
TROUBLESHOOTING CHART.................................................................... 96
GENERAL INFORMATION
GENERAL DESCRIPTION
YDA packaged liquid chillers are completely self-con-
tained outdoor units shipped ready for final job installa-
tion requiring only liquid connections, and power and
control wiring. They are designed primarily for central
station air conditioning applications with normal instal-
lations being on roof-tops or at ground level beside the
building.
The chiller package is composed of two modules, each
controlled by its own microprocessor with one module
being designated as the Master and one module as
the Slave. Each module consists of a microprocessor
panel, power panel, evaporator, condenser, contactors,
fans, and two compressors (each with 2 stages of load-
ing) in separate refrigerant circuits. An RS-485 com-
munications link between the two microprocessors per-
mits a Master/Slave operation with a single operator
control point.
CODE STATUS
The units are designed in accordance with U.L. (200,
230, 460-3-60), N.E.C., ASHRAE/ANSI STANDARD 15,
and ASME codes.

FORM 150.75-NM2
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YORK INTERNATIONAL
UNIT NOMENCLATURE
YDAJ 8 7 KU646PAX
YORK S = Special
X = Blank if not used
2 Module Chiller
Design Level
Air Cooled
Type Start
Compressor Type (J or Z) P = Part Wind
System #1 or 3 Compressor Code Voltage Code:
8, 9 (See PHYSICAL DATA) 17 = 200-3-60
28 = 230-3-60
System #2 or 4 Compressor Code 40 = 380-3-60
7, 8, 9 (See PHYSICAL DATA) 46 = 460-3-60
50 = 380/415-3-50
Cooler Code: 58 = 575-3-60
H, K, M 64 = 346-3-50
Fan Code:
6, 7, 8, 9
Condenser Code:
U, W
Compressor Series
Compressor Style
No. of Active Cylinders
(8)
Stroke (3, 4)
Steps of Unloading
Motor Size (M, N, Q, P, S, T,)
Voltage Code:
17 = 200-3-60
28 = 230-3-60
40 = 380-3-60
46 = 460-3-60
50 = 380/415-3-50
64 = 346-3-50
Motor Manufacturer
(S = A.O. Smith, L = Leroy Somer)
J G 8 3 2 M -17 S
The model number denotes the following characteristics of the unit:

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FIG. 1  UNIT COMPONENTS (Typical on each of the two modules)
00023TG
00024TG

FORM 150.75-NM2
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YORK INTERNATIONAL
FIG. 1  UNIT COMPONENTS (Contd)
LD01910
00025TG

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COMPRESSOR
TERMINAL BOX
27299A
MOTOR TERMINALS
SUPPRESSORS
MOTOR PROTECTOR (MP)
DISCHARGE
STOP VALVE
SUCTION PRESSURE
CONNECTION
CAPACITY CONTROL
SOLENOIDS
RAINTIGHT
TERMINAL BOX
SUCTION
STOP VALVE
SIGHT GLASSES (2)OIL CHARGING
VALVE
OIL PRESSURE ACCESS
CONNECTION
CRANKCASE
HEATER
6 CYLINDER
MODEL J G COMPRESSOR
27599A
FIG. 2  COMPRESSOR COMPONENTS

FORM 150.75-NM2
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YORK INTERNATIONAL
OPERATIONAL LIMITATIONS
LD01911
CODE MODEL
AYDAJ87HU7, 87KU6, 97KU7
BYDAJ88MU8, 98MU7, 99MU7, 99MW6, 99MW9
FIG. 3  COOLER WATER PRESSURE DROP
VOLTAGE LIMITATIONS
The following voltage limitations are absolute and op-
eration beyond these limitations may cause serious
damage to the compressor.
VOLTAGES
UNIT POWER MIN. MAX.
200-3-60 180 220
230-3-60 207 253
380-3-60 355 415
460-3-60 414 506
380/415-3-50 342 440
346-3-50 311 381
575-3-60 517 633
NOTES:
1. Units can be used for brine temperatures down to 20°F by
resetting standard control.
2. Operation below 25°F requires the Optional Low Ambient kit.
3. Operation above 115°F requires Optional High Ambient kit.
4. The evaporator is protected against freeze-up to -20°F with an
electrical heater cable as standard.
CAUTION: Excessive flow will cause damage to the
cooler. Do not exceed max. cooler GPM.
Special care should be taken when mul-
tiple chillers are fed by a single pump.
TEMPERATURES AND FLOWS
MODEL LVG. WATER COOLER AIR ON
YDA TEMP. °F GPM COND. - °F
Min.1Max. Min. Max. Min.2Max.3
J87HU7 40 50 300 1280 0 130
J87KU6 40 50 400 1444 0 130
J97KU7
J88MU6 40 50 500 1606 0 130
J98MU7
J99MW6 40 50 500 1606 0 130
J99MU7
J99MW9 40 50 500 1606 0 130

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MODEL YDA 60 HZ  J87KU6 J88MU6 J99MW6 
50 HZ J87HU7 J97KU7 J88MU7 J99MU7 J99MW9
NOMINAL TONS 60 HZ  370.9 398.8 462.1 
50 HZ 331.5 358.3 389.6 413.0 438.0
NO. OF REFRIG. CIRCUITS 44 4 4 4
60 HZ Sys. 1 & 3  JG83-S JG83-S JG84-V 
COMPRESSOR MODEL Sys. 2 & 4  JG64-S JG83-S JG84-V 
50 HZ Sys. 1 & 3 JG83-S JG84-T JG84-T JG84-T JG84-T
Sys. 2 & 4 JG64-S JG64-S JG83-S JF84-T JG84-T
UNIT STANDARD 60 HZ  10 Steps 10 Steps 10 Steps 
CAPACITY 50 HZ 8 Steps 8 Steps 10 Steps 10 Steps 10 Steps
CONTROL OPTIONAL 60 HZ  19 Steps 19 Steps 19 Steps 
50 HZ 16 Steps 11 Steps 19 Steps 19 Steps 19 Steps
CONDENSER  DWP 450 PSIG
NO. OF FANS (36" Dia. Direct Drive) 16 16 16 16 16
HP/KW Each (1140 RPM) 60 HZ 3/2.4 3/2.4 3/2.4 3/2.4 
(950 RPM) 50 HZ 3/2.2 3/2.2 3/2.2 3/2.2 3/2.2
CFM Total 60 HZ  248,000 248,000 248,000 
50 HZ 238,400 238,400 238,400 238,400 238,400
COOLER  DUAL CIRCUITED
DWP  235 PSIG REF. SIDE,
150 PSIG WATER SIDE
DIA. x LENGTH (2) 16" x 8' (2) 18" x 8' (2) 20" x 8' (2) 20" x 8' (2) 20" x 8'
WATER VOLUME (EA) 48 59 69 69 69
GPM Min. 240 240 300 400 400
Max. 1160 1160 1280 1400 1400
60 HZ CU / AL  33,000 33,850 35,550 
SHIPPING CU / CU  37,900 38,750 41,800 
50 HZ CU / AL 33,000 33,850 33,850 35,550 36,650
WEIGHT CU / CU 37,900 38,750 38,750 41,800 37,250
(LBS.) 60 HZ CU / AL  33,500 34,450 36,150 
OPERATING CU / CU  38,400 39,350 42,400 
50 HZ CU / AL 33,400 34,350 34,450 36,150 42,900
CU / CU 38,300 39,250 39,350 42,400 43,500
REFRIG. CHARGE Sys. 1 & 3 124 139 139 145 145
(LBS. R-22) Sys. 2 & 4 132 140 156 162 162
PHYSICAL DATA

FORM 150.75-NM2
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YORK INTERNATIONAL
DIMENSIONS
CAUTION
FAILURE TO HEED FOLLOWING RECOMMENDED CLEARANCES MAY RESULT IN REDUCED SYSTEM
PERFORMANCE, NUISANCE SHUTDOWNS, AND SERVICE PROBLEMS.
LD01912
NOTES:
1. Clearances  Minimum YORK required clearances to prevent condenser air recirculation and faulty operation of units are as follows:
Side to wall 8'0"* Rear to wall 8'0"* Control Panel End to wall 5'0"* Top 50'0" Distance between adjacent units 12'
0"
* No more than one wall can be higher than the top of the unit. The aread within the claearnaces shown above and area under the unit
must be kept clear of all obstructions that would impede free air flow to the unit. In installations where winter operation is intended and
snow accumilations are expected, additional unit height must be provided to insure full air flow.
2. Cooler liquid connection sizes (inlet and outlet) 8" victaulic for the YDAJ87KU6  YDAJ99MW9.
3. Dimensions are in inches. Drawings are not to scale and are for planning purposes only. Contact nearest YORK office for detail drawings.
4. Modeules have 1-1/8" of space between to facilitate maintenance.
5. Spring isolators (OPTIONAL) will increase overall height of unit by approx. 6". Refer to FORM 150.40-ES3 for details.
6. Be sure to review WARNINGS on page 2 prior to installation.
WEIGHT DISTRIBUTION (LB.) DIM.
MODEL YDA A B C D E F G H J
J87HU7 1953 1992 2010 2285 1947 2129 2147 2228 1'6"
J87KU6 1954 1995 2013 2287 1956 2141 2159 2236 1'5"
J97KU7 1971 2018 2034 2312 2023 2235 2251 2317 1'6"
J88MU6, J98MU7 1973 2020 2036 2314 2030 2245 2261 2324 1'6-1/2"
J99MW6, J99MU7 2094 2141 2157 2440 2113 2328 2370 2418 1'6-1/2"
J99MW9 2162 2209 2225 2508 2181 2397 2439 2486 1'6-1/2"

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MODEL VOLT- DUAL NON-FUSED MAXSIZE MCA1
YDA AGE MCA1ELEMENT DISC SW CKT BKR
CODE FUSE SIZE MIN SIZE4HACR TYPE5DUAL POINT YORK SUPPLIED DISCONNECT
MIN2MAX3(CU ONLY)6(CU ONLY)6,8
J87HU7 -50 410 500 500 600 500 (1-3) #6-350MCM (1-2) #4/0-500MCM
J87HU7 -64 446 500 600 600 600 (1-3) #6-350MCM (1-2) #4/0-500MCM
J87KU6 -17 936 1200 1200 1000 1200 (1-3) #6-350MCM (1-4) #1/0-350MCM
J87KU6 -28 840 1000 1000 1000 1000 (1-3) #6-350MCM (1-4) #1/0-350MCM
J87KU6 -40 492 600 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
J87KU6 -46 412 500 500 600 500 (1-3) #6-350MCM (1-2) #4/0-500MCM
J97KU7 -50 445 500 600 600 600 (1-3) #6-350MCM (1-2) #4/0-500MCM
J87KU6 -58 337 400 450 400 450 (1-3) #6-350MCM (1) #1-600MCM OR (2) #1-250MCM
J97KU7 -64 483 600 600 600 600 (1-3) #6-350MCM (1-2) #4/0-500MCM
J88MU6 -17 987 1200 1200 1200 1200 (1-3) #6-350MCM N/A
J88MU6 -28 884 1000 1200 1000 1200 (1-3) #6-350MCM (1-4) #1/0-350MCM
J88MU6 -40 519 600 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
J88MU6 -46 434 500 600 600 600 (1-3) #6-350MCM (1-2) #4/0-500MCM
J98MU7 -50 465 600 600 600 600 (1-3) #6-350MCM (1-2) #4/0-500MCM
J88MU6 -58 355 400 450 400 450 (1-3) #6-350MCM (1) #1-600MCM OR (2) #1-250MCM
J98MU7 -64 505 600 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
J99MU7 -50 493 600 600 600 600 (1-3) #6-350MCM (1-2) #4/0-500MCM
J99MU7 -64 535 600 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
J99MW6 -40 614 700 800 800 800 (1-3) #6-350MCM (1-2) 500-750MCM
J99MW6 -46 513 600 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
J99MW6 -58 418 500 500 600 500 (1-3) #6-350MCM (1-2) #4/0-500MCM
J99MW9 -50 524 600 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
J99MW9 -64 562 700 700 600 700 (1-3) #6-350MCM (1-2) #4/0-500MCM
ELECTRICAL DATA
SYSTEM 1 OR 3 WIRING SYSTEM 2 OR 4 WIRING
MODEL VOLT- DUAL NON-FUSED MAXSIZE INCOMING DUAL NON-FUSED MAXSIZE INCOMING
YDA AGE MCA1ELEMENT DISC SW CKT BKR WIRE RANGE MCA1ELEMENT DISC SW CKT BKR WIRE RANGE
CODE FUSESIZE MIN SIZE4HACR TYPE5(CU ONLY)6FUSE SIZE MIN SIZE4HACR TYPE5(CU ONLY)6
MIN2MAX3MIN2MAX3
J87HU7 -50 237 250 400 400 400 (1-2) #4-250MCM 212 200 350 200 350 (1-2) #4-250MCM
J87HU7 -64 257 350 400 400 400 (1-2) #4-250MCM 230 300 350 400 350 (1-2) #4-250MCM
J87KU6 -17 544 700 600 600 800 (1-2) 1/0-500MCM 481 600 800 600 800 (1-2) 1/0-500MCM
J87KU6 -28 486 600 600 600 800 (1-2) 1/0-500MCM 431 600 700 600 700 (1-2) 1/0-500MCM
J87KU6 -40 286 350 400 400 450 (1-2) #4-250MCM 253 300 400 400 400 (1-2) #4-250MCM
J87KU6 -46 239 300 400 400 400 (1-2) #4-250MCM 212 200 350 200 350 (1-2) #4-250MCM
J97KU7 -50 272 350 400 400 450 (1-2) #4-250MCM 212 200 350 200 350 (1-2) #4-250MCM
J87KU6 -58 195 200 200 200 300 (1-2) #4-250MCM 173 200 250 200 250 (1-2) #4-250MCM
J97KU7 -64 295 350 400 400 500 (1-2) #4-250MCM 230 300 350 400 350 (1-2) #4-250MCM
J88MU6 -17 544 700 600 600 800 (1-2) 1/0-500MCM 544 700 800 600 800 (1-2) 1/0-500MCM
J88MU6 -28 486 600 600 600 800 (1-2) 1/0-500MCM 486 600 800 600 800 (1-2) 1/0-500MCM
J88MU6 -40 286 350 400 400 450 (1-2) #4-250MCM 286 350 450 400 450 (1-2) #4-250MCM
J88MU6 -46 239 300 400 400 400 (1-2) #4-250MCM 239 300 400 400 400 (1-2) #4-250MCM
J98MU7 -50 272 350 400 400 450 (1-2) #4-250MCM 237 300 400 400 400 (1-2) #4-250MCM
J88MU6 -58 195 200 200 200 300 (1-2) #4-250MCM 195 200 300 200 300 (1-2) #4-250MCM
J98MU7 -64 295 350 400 400 500 (1-2) #4-250MCM 257 350 400 400 400 (1-2) #4-250MCM
J99MU7 -50 272 350 400 400 450 (1-2) #4-250MCM 272 350 450 400 450 (1-2) #4-250MCM
J99MU7 -64 295 350 400 400 500 (1-2) #4-250MCM 295 350 500 400 500 (1-2) #4-250MCM
J99MW6 -40 339 450 400 400 600 (1-2) 1/0-500MCM 366 450 500 400 600 (1-2) 1/0-500MCM
J99MW6 -46 283 350 400 400 450 (1-2) #4-250MCM 284 350 450 400 450 (1-2) #4-250MCM
J99MW6 -58 230 300 400 400 350 (1-2) #4-250MCM 230 300 350 400 350 (1-2) #4-250MCM
J99MW9 -50 287 350 450 400 400 (1-2) #4-250MCM 287 350 400 400 450 (1-2) #4-250MCM
J99MW9 -64 309 400 500 400 400 (1-2) #4-250MCM 309 400 500 400 500 (1-2) #4-250MCM