York YCAS0250 Quick start guide

WIRING DIAGRAM
MILLENNIUM TM
AIR COOLED SCREW LIQUID CHILLERS
MODELS YCAS STYLE F
Supersedes: Nothing Form 201.18-W3 (899)
28971AR
200 230 380
460 & 575 Models
MODELS YCAS0250 THROUGH YCAS0330

YORK INTERNATIONAL
2
Nomenclature................................................................................................. 3
Electrical Data ............................................................................................... 4
60 Hz .................................................................................................... 4
50 Hz .................................................................................................... 6
PowerWiring Possibilities............................................................................... 10
Systems 1 and 2Wiring Diagrams ................................................................. 14
Fig.1 - ElementaryDiagram .................................................................. 14
Fig.2 - ElementaryDiagram .................................................................. 15
StandardCompressorPowerSupplies ........................................................... 16
Fig.3 - Across-The-Line Start ............................................................... 16
Fig.4 -Wye-Delta Start ......................................................................... 17
System 3Wiring Diagrams ............................................................................. 16
Fig.5- Elementary Diagram,Across-The-Line Start.............................. 18
Fig.6- Connection Diagram .................................................................. 20
Fig.7- Connection Diagram (continued) ................................................ 22
Fig.8- Connection Diagram (continued) ................................................ 23
Fig.9 - CompressorTerminal Box .......................................................... 24
Fig.10 - CompressorTerminal Box ........................................................ 25
DXSTDirect Drive ......................................................................................... 26
Fig. 11 - Elementary Diagram, Detail A .................................................. 26
Fig. 12 - Elementary Diagram, Detail B .................................................. 27
Fig.13 - Elementary Diagram, DetailC.................................................. 28
ConnectionDiagramSystemWiring ............................................................... 29
ControlPowerTransformerKit(Optional) ........................................................ 31
TABLE OF CONTENTS
WARNING
HIGH VOLTAGE
is used in the operation of this equipment
DEATH OR SERIOUS INJURY
may result if personnel fail to observe precautions.
Work on electronic equipment should not be undertaken unless the individual(s) has (have) been
trained in the proper maintenance of the equipment and is (are) familiar with its potential hazards.
Shut off power supply to equipment before beginning work and follow lockout procedures. When
workinginside equipment with power off,take special care to dischargeevery capacitor likely to hold
dangerouspotential.
Be careful not to contact high voltage connections when installing or operating this equipment.
LOW VOLTAGE
DO NOT be misled by the term “low voltage”. Voltages as low as 50 volts
may cause death.

FORM201.18-W3
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YORK INTERNATIONAL
TheModel Number denotes the following characteristics of the unit:
YORKChiller
YC = YORKChiller
Air-Cooled
CompressorType
S = Screw
NominalCapacity
UnitDesignator
S = Standard Unit
E = High Efficiency
DesignSeries
Type Start
Y = Star (WYE)-Delta
X = Across-the-Line
VoltageCode
17 = 200-3-60
28 = 230-3-60
40 = 380-3-60
46 = 460-3-60
58 = 575-3-60
Refrigerant
C = R-22
YC A S 0140 E C 17 Y F
NOMENCLATURE

YORK INTERNATIONAL
4
60 Hz MULTIPLE POINT POWER SUPPLY CONNECTION
(Two Field Provided Power Supply Circuits to the Chiller. Field Connections to Factory provided Terminal Block (Std)
or Disconnects (Opt) in the Options Panel. Circuit Breaker (opt10) in each of the two Motor Control Centers.)
Electrical System #1 Field Supplied Wiring
Chiller Field Provided Power Supply Factory Provided (Lugs) Wire Range7Compressor #1 Compressor #3 Fan11, 12
Model Data
YCAS Volts MCA1Min NF Over-Current Protection13 Standard Optional NF RLA Y-
∆ LRA XL-LRA RLA Y- ∆ LRA XL-LRA Qty FLA (ea) LRA (ea)
Disc SW2Min.3, 5 Max.4, 6 Terminal block Disc. Switch
380 387 400 450 500 (1)1/0-(2)4/0AWG 250-500 kcm 155 343 1,093 155 343 1,093 8 4.8 23.0
0250EC 460 320 400 400 400 (1)1/0-(2)4/0AWG 250-500 kcm 128 280 893 128 280 893 8 4.0 19.0
575 257 400 300 350 (1)1/0-(2)4/0AWG 250-500 kcm 103 224 714 103 224 714 8 3.1 15.2
380 477 600 600 700 (2) 2AWG-300kcm (2) 250-500kcm 155 343 1,093 227 343 1,093 8 4.8 23.0
0270EC 460 390 400 450 500 (1)1/0-(2)4/0AWG 250-500 kcm 128 280 893 184 280 893 8 4.0 19.0
575 312 400 350 450 (1)1/0-(2)4/0AWG 250-500 kcm 103 224 714 147 224 714 8 3.1 15.2
380 473 600 600 600 (2) 2AWG-300kcm (2) 250-500kcm 181 343 1,093 199 343 1,093 9 4.8 23.0
0300EC 460 390 400 450 500 (1)1/0-(2)4/0AWG 250-500 kcm 149 280 893 164 280 893 9 4.0 19.0
575 311 400 350 400 (1)1/0-(2)4/0AWG 250-500 kcm 119 224 714 131 224 714 9 3.1 15.2
380 524 600 600 700 (2)1/0AWG-500kcm (2) 250-500kcm 197 343 1,093 227 343 1,093 9 4.8 23.0
0330EC 460 429 600 500 600 (2) 2AWG-300kcm (2) 250-500kcm 163 280 893 184 280 893 9 4.0 19.0
575 342 400 400 500 (1)1/0-(2)4/0AWG 250-500 kcm 130 224 714 147 224 714 9 3.1 15.2
ELECTRICAL DATA (60 Hz)
NOTES
1. Minimum circuit ampacity (MCA) is based on 125% of the rated load amps for the largest motor plus 100% of the rated load amps for all
other loads included in the circuit, per N.E.C. Article 430-24. If a Factory Mounted Control Transformer is provided, add the following to
the system #1 MCA values in the YCAS Tables: -17, add 15 amps; -28, add 12 amps; -40, add 7 amps; -46, add 6 amps; -58, add 5 amps.
2. The recommended disconnect switch is based on a minimum of 115% of the summation rated load amps of all the loads included in the
circuit, per N.E.C. 440 - 12A1.
3. Minimum fuse size is based on 150% of the largest motor RLA plus 100% of the remaining RLAs (U.L. Standard 1995, Section 36.1).
Minimum fuse rating = (1.5 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
4. Maximum dual element fuse size is based on 225% maximum plus 100% of the rated load amps for all other loads included in the circuit,
per N.E.C. 440-22. Maximum fuse rating = (2.25 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
5. Minimum circuit breaker is 150% maximum plus 100% of rated load amps included in the circuit, per circuit per U.L. 1995 Fig. 36.2.
Minimum circuit breaker rating = (1.5 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
6. Maximum circuit breaker is based on 225% maximum plus 100% of the rated load amps for all loads included in the circuit, per circuit,
per U.L. 1995 Fig. 36.2. Maximum circuit breaker rating = (2.25 x largest compressor RLA) + other compressor RLAs + ( # fans x each
fan motor FLA).

FORM201.18-W3
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YORK INTERNATIONAL
Electrical System #2 Field Supplied Wiring
Chiller Field Provided Power Supply Factory Provided (Lugs) Wire Range Compressor #2 Compressor #4 Fan11, 12
Model Data
YCAS Volts MCA1Min NF Over-Current Protection13 Standard Optional NF RLA Y-
∆ LRA XL-LRA RLA Y- ∆ LRA XL-LRA Qty FLA (ea) LRA (ea)
Disc SW2Min.3, 5 Max.4, 6 Terminal block Disc. Switch
380 213 200 300 350 2 AWG-300kcm 4 AWG-300kcm 155 343 1,093 –————4 4.8 23.0
0250EC 460 176 175 225 300 # 3-4/0 AWG 4 AWG-300kcm 128 280 893 –————4 4.0 19.0
575 141 150 175 225 # 3-4/0 AWG 4 AWG-300kcm 103 224 714 – ––– ––– 4 3.1 15.2
380 213 200 300 350 2 AWG-300kcm 4 AWG-300kcm 155 343 1,093 –————4 4.8 23.0
0270EC 460 176 175 225 300 # 3-4/0 AWG 4 AWG-300kcm 128 280 893 –————4 4.0 19.0
575 141 150 175 225 # 3-4/0 AWG 4 AWG-300kcm 103 224 714 –————4 3.1 15.2
380 250 250 300 400 2 AWG-300kcm 6 AWG-350kcm 181 343 1,093 –————5 4.8 23.0
0300EC 460 206 200 250 350 2 AWG-300kcm 4 AWG-300kcm 149 280 893 –————5 4.0 19.0
575 164 175 200 250 # 3-4/0 AWG 6 AWG-350kcm 119 224 714 –————5 3.1 15.2
380 270 400 350 450 (1)1/0-(2)4/0AWG 250-500 kcm 197 343 1,093 –————5 4.8 23.0
0330EC 460 224 225 300 350 2 AWG-300kcm 4 AWG-300kcm 163 280 893 –————5 4.0 19.0
575 178 175 225 300 # 3-4/0 AWG 6 AWG-350kcm 130 224 714 –————5 3.1 15.2
7. The Incoming Wire Range is the minimum and maximum wire size that can be accommodated by unit wiring lugs. The (1), (2), or (3)
indicate the number of termination points or lugs which are available per phase. Actual wire size and number of wires per phase must
be determined based on ampacity and job requirements using N.E.C. wire sizing information. The above recommendations are based
on the National Electric Code and using copper connectors only. Field wiring must also comply with local codes.
8. A ground lug is provided for each compressor system to accommodate field grounding conductor per N.E.C. Article 250-54. A control
circuit grounding lug is also supplied. Incoming ground wire range is #6 - 350 MCM.
9. The field supplied disconnect is a “Disconnecting Means”as defined in N.E.C. 100.B, and is intended for isolating the unit from the
available power supply to perform maintenance and troubleshooting. This disconnect is not intended to be a Load Break Device.
10. Two-compressor machines with single-point power connection, and equipped with Star-Delta compressor motor start, must also
include Factory provided circuit breakers in each motor control center. All 3 & 4 compressor machines equipped with Star-Delta
compressor motor start must also include Factory-provided circuit breakers in each motor control center.
11. Consult factory for Electrical Data on units equipped with “High Static Fan”Option. High Static Fans are 3.8 kW each.
12. FLA for “Low Noise Fan”motors: 200V = 8.0A, 230V = 7.8A, 380V = 4.4A, 460V = 3.6A, 575V = 2.9A.
13. Group Rated breaker must be HACR type for cUL Machines.

YORK INTERNATIONAL
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50HzMULTIPLE POINTPOWERSUPPLY CONNECTION
Two Field Provided Power Supply Circuits to the Chiller. Field Connections to Factory Provided Terminal Blocks (standard) or
Disconnects (optional) in the Options Panel. Circuit Breakers (optional) in each of the two Motor Control Centers.
*“Optional”Circuit Breakers are REQUIRED for units with CE mark.
ELECTRICAL DATA (50 Hz)
NOTES
1. MRC is Maximum Running Current, the maximum continuous current at any operating point in the rating range. Also referred to as MCA,
or Minimum Current Ampacity to be furnished by the installer.
2. The recommended disconnect switch is based on a minimum of 115% of the summation rated load amps of all the loads included in the
circuit, per N.E.C. 440 - 12A1.
3. Minimum fuse size is based on 150% of the largest motor RLA plus 100% of the remaining RLAs (U.L. Standard 1995, Section 36.1).
Minimum fuse rating = (1.5 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
4. Maximum dual element fuse size is based on 225% maximum plus 100% of the rated load amps for all other loads included in the circuit,
per N.E.C. 440-22. Maximum fuse rating = (2.25 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
5. Minimum circuit breaker is 150% maximum plus 100% of rated load amps included in the circuit, per circuit per U.L. 1995 Fig. 36.2.
Minimum circuit breaker rating = (1.5 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
6. Maximum circuit breaker is based on 225% maximum plus 100% of the rated load amps for all loads included in the circuit, per circuit,
per U.L. 1995 Fig. 36.2. Maximum circuit breaker rating = (2.25 x largest compressor RLA) + other compressor RLAs + ( # fans x each
fan motor FLA).
ELECTRICAL SYSTEM #1 FIELD SUPPLIED WIRING
Chiller Field Provided Power Supply Factory Provided (Lugs) Wire Range7Compressor #1 Data Compressor #3 Data Fan Data11, 12
Model
YCAS Volts MRC Min NF Over-Current Protection Standard Optional NF RLA Y-
∆∆
∆∆
∆ LRA XL-LRA RLA Y-
∆∆
∆∆
∆ LRA XL-LRA Qty FLA (ea) LRA (ea)
(MCA1) Disc SW2Min.3, 5 Max.4, 6 Terminal Block Disc. Switch
0693SB 380 362 400 400 450 (1)1/0-(2)4/0AWG 250-500 kcm 140 283 907 124 283 907 7 4.6 17.1
0773SB 380 436 600 450 500 (2) 2AWG-300kcm (2) 250-500kcm 140 283 907 183 283 907 7 4.6 17.1
0783EB 380 402 400 450 500 (1)1/0-(2)4/0AWG 250-500 kcm 124 283 907 168 283 907 8 4.6 17.1
0873EB 380 457 600 500 500 (2) 2AWG-300kcm (2) 250-500kcm 168 283 907 168 283 907 8 4.6 17.1
0953EB 380 494 600 500 600 (2) 2AWG-300kcm (2) 250-500kcm 183 283 907 183 283 907 8 4.6 17.1

FORM201.18-W3
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YORK INTERNATIONAL
7. The Incoming Wire Range is the minimum and maximum wire size that can be accommodated by unit wiring lugs. The (1), (2), or (3)
indicate the number of termination points or lugs which are available per phase. Actual wire size and number of wires per phase must
be determined based on ampacity and job requirements using N.E.C. wire sizing information. The above recommendations are based
on the National Electric Code and using copper connectors only. Field wiring must also comply with local codes.
8. A ground lug is provided for each compressor system to accommodate field grounding conductor per N.E.C. Article 250-54. A control
circuit grounding lug is also supplied. Incoming ground wire range is #6 - 350 MCM.
9. The field supplied disconnect is a “Disconnecting Means”as defined in N.E.C. 100.B, and is intended for isolating the unit from the
available power supply to perform maintenance and troubleshooting. This disconnect is not intended to be a Load Break Device.
10. Two-Compressor machines with single-point power connection, and equipped with Star-Delta Compressor motor starters, must also
include Factory-provided circuit breakers in each motor control center. 3 & 4 Compressor machine equipped with Star-Delta compressor
motor starter, must also include factory-provided circuit breakers in each motor control center.
11. Consult factory for Electrical Data on units equipped with “High Static Fan”Option. High Static Fans are 3.5 kW each.
12. FLA for “Low Noise Fan”motors is 4.1 A.
ELECTRICAL SYSTEM #2 FIELD SUPPLIED WIRING
Chiller Field Provided Power Supply Factory Provided (Lugs) Wire Range7Compressor #2 Data Compressor #4 Data Fan Data11, 12
Model
YCAS Volts MRC Min NF Over-Current Protection Standard* Optional* NF RLA Y-
∆ LRA XL-LRA RLA Y- ∆ LRA XL-LRA Qty FLA (ea) LRA (ea)
(MCA1) Disc SW2Min.3Max.4Terminal Block Disc. Switch
0693SB 380 189 200 200 300 #3-4/0 AWG 4 AWG-300kcm 140 283 907 –– —— —— 3 4.6 17.1
0773SB 380 189 200 200 300 #3-4/0 AWG 4 AWG-300kcm 140 283 907 –– —— —— 3 4.6 17.1
0783EB 380 173 175 175 250 #3-4/0 AWG 4 AWG-300kcm 124 283 907 –– —— —— 4 4.6 17.1
0873EB 380 228 250 250 350 2 AWG-300kcm 6 AWG-350kcm 168 283 907 –– ––– ––– 4 4.6 17.1
0953EB 380 247 250 250 400 2 AWG-300kcm 6 AWG-350kcm 183 283 907 –– —— —— 4 4.6 17.1

YORK INTERNATIONAL
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OPTIONAL SINGLE-POINT POWER SUPPLY CONNECTION AND INTERNAL UNIT CIRCUIT BREAKERS
(One Field Provided Power Supply Circuit to the chiller. Field connections to Power Terminal Block (standard) or Non-Fused Disconnect (option)
in ‘Option Panel’. Circuit Breakers in each Motor Control Center
ELECTRICAL DATA
FIELD SUPPLIED WIRING
CHILLER FIELD PROVIDED POWER SUPPLY FACTORY PROVIDED (LUGS) WIRE RANGE7
MODEL
YCAS VOLTS MCA1MIN NF OVER-CURRENT PROTECTION13 TERMINAL BLOCK NF DISC. SWITCH
DISC SW2MIN.3, 5 MAX.4, 6 (LUGS) WIRE RANGE (LUGS) WIRE RANGE
380 561 600 600 700 (2)1/0AWG-500kcm (2)250-500kcm
0250EC 460 464 600 500 500 (2)#2 AWG-300kcm (2) 250-500kcm
575 372 400 400 450 (2)# 3-4/0AWG 250-500kcm
380 651 800 800 800 (2)1/0AWG-500kcm (3)2/0AWG-400kcm
0270EC 460 534 600 600 700 (2)1/0AWG-500kcm (2)250-500kcm
575 427 600 500 500 (2)#2 AWG-300kcm (2) 250-500kcm
380 678 800 800 800 (3)#2 AWG-300kcm (3)2/0AWG-400kcm
0300EC 460 559 600 600 700 (2)1/0AWG-500kcm (2)250-500kcm
575 445 600 500 500 (2)1/0AWG-500kcm (2)250-500kcm
380 745 800 800 800 (3)#2 AWG-300kcm (3)2/0AWG-400kcm
0330EC 460 612 800 700 700 (2)1/0AWG-500kcm (3)2/0AWG-400kcm
575 487 600 600 600 (2)#2 AWG-300kcm (2) 250-500kcm
LEGEND
ACR-LINE ACROSSTHELINE START
C.B. CIRCUITBREAKER
D.E. DUALELEMENTFUSE
DISCSW DISCONNECTSWITCH
FACT CB FACTORY-MOUNTEDCIRCUITBREAKER
FLA FULL LOAD AMPS
HZ HERTZ
MAX MAXIMUM
MCA MINIMUMCIRCUITAMPACITY
MIN MINIMUM
MINNF MINIMUMNON-FUSED
RLA RUNNING LOADAMPS
S.P. WIRE SINGLE-POINTWIRING
Y-∆WYE-DELTA START
X-LRA ACROSS-THE-LINEINRUSHLOCKED ROTORAMPS
Y-LRA WYE-DELTAINRUSH LOCKED ROTORAMPS
VOLTAGE CODE
-17 = 200-3-60
-28 = 230-3-60
-40 = 380-3-60
-46 = 460-3-60
-58 = 575-3-60

FORM201.18-W3
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YORK INTERNATIONAL
ELECTRICAL SYSTEM #1 FIELD SUPPLIED WIRING
COMPRESSOR#1 DATA COMPRESSOR#3 DATA FAN DATA11, 12
RLA Y- ∆ LRA XL-LRA RLA Y- ∆ LRA XL-LRA QTY FLA (EA) LRA (EA)
155 343 1,093 155 343 1,093 8 4.8 23.0
128 280 893 128 280 893 8 4.0 19.0
103 224 714 103 224 714 8 3.1 15.2
155 343 1,093 227 343 1,093 8 4.8 23.0
128 280 893 184 280 893 8 4.0 19.0
103 224 714 147 224 714 8 3.1 15.2
181 343 1,093 199 343 1,093 9 4.8 23.0
149 280 893 164 280 893 9 4.0 19.0
119 224 714 131 224 714 9 3.1 15.2
197 343 1,093 227 343 1,093 9 4.8 23.0
163 280 893 184 280 893 9 4.0 19.0
130 224 714 147 224 714 9 3.1 15.2
ELECTRICAL SYSTEM #2 FIELD SUPPLIED WIRING
COMPRESSOR#2 DATA COMPRESSOR #4DATA FAN DATA11, 12
RLA Y- ∆ LRA XL-LRA RLA Y- ∆ LRA XL-LRA QTY FLA (EA) LRA (EA)
155 343 1,093 –– —— —— 4 4.8 23.0
128 280 893 –– —— —— 4 4.0 19.0
103 224 714 –– ––– –––– 4 3.1 15.2
155 343 1,093 –– —— —— 4 4.8 23.0
128 280 893 –– —— —— 4 4.0 19.0
103 224 714 –– —— —— 4 3.1 15.2
181 343 1,093 –– —— —— 5 4.8 23.0
149 280 893 –– —— —— 5 4.0 19.0
119 224 714 –– —— —— 5 3.1 15.2
197 343 1,093 –– —— —— 5 4.8 23.0
163 280 893 –– —— —— 5 4.0 19.0
130 224 714 –– —— —— 5 3.1 15.2
CONTROLPOWERSUPPLY (UNITS WITHOUT STANDARD CONTROL CIRCUIT TRANSFORMER)
NO.OF CONTROL MCA MAXDUAL NON-FUSED
COMPRESSORS POWER (MAX LOAD ELEMENT DISCONNECT
SUPPLY CURRENT) FUSESIZE SWITCH SIZE
(Non-CE 50/60Hz) 115V-1Ø30A 30A 30A
115V-1Ø25A 30A 30A
(CE 50Hz)

YORK INTERNATIONAL
10
POWER WIRING POSSIBILITIES
MULTIPLE POINT WITH SEPARATE SYSTEM CIRCUIT BREAKERS
MULTIPLE POINT NON-FUSED DISCONNECTS WITH SEPARATE SYSTEM TERMINAL BLOCKS
(SUITABLEFORACROSS-THE-LINESTARTONLY)
DEF or HACR
TYPE CB
Supply #2
Supply #1
#1 #2
#3
TB TB
TB SW
SW
LD04365
LD04364
DEF or CONVENTIONAL
TYPE CB
#1
TB
TB
#2
#3
SUPPLY #1
SUPPLY #2
SW
SW