York MILLENNIUM YCAS0373 Quick start guide

WIRING DIAGRAM
Millennium TM
AIR COOLED SCREW LIQUID CHILLERS
(STYLE F)
Supersedes: Nothing Form 201.18-W2 (599)
28971A(r)
MODELS YCAS0373 THRU YCAS0653

YORK INTERNATIONAL
2
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
workinginsideequipmentwithpoweroff,takespecialcaretodischargeeverycapacitorlikelytohold
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.

FORM 201.18-W2
3
YORK INTERNATIONAL
NOMENCLATURE
The Model Number denotes the following characteristics of the unit:
YORK Chiller
YC = YORK Chiller
Air-Cooled
Compressor Type
S = Screw
Nominal Capacity
Unit Designator
S = Standard Unit
E = High Efficiency
Design Series
Type Start
Y = Star (WYE)-Delta
X = Across-the-Line
Voltage Code
50 = 380 / 415-3-15
Refrigerant
C = R-22
B = R-407c
YC A S 0373 E C 17 Y F

YORK INTERNATIONAL
4
ELECTRICAL DATA
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).
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.
MULTIPLE POINT 380V / 50HZ / 3Ø POWER SUPPLY CONNECTION
Each of Two Field Provided Power Supply Circuits individually protected with Branch Circuit Protection.
Field Connections to Factory provided Terminal Block (Std), Disconnects (Opt), or Breakers(Opt) in each of the two Motor Control Centers.
*Optional Circuit Breakers are REQUIRED for units with CE mark.
CHILLER ELECTRICAL SYSTEM #1 FIELD SUPPLIED WIRING
MODEL FIELD PROVIDED POWER SUPPLY FACTORY PROVIDED (LUGS) WIRE RANGE7COMPRESSOR DATA FAN
YCAS MRC MIN NF OVER-CURRENT PROTECTION STANDARD* OPTIONAL* NF OPTIONAL DATA11, 12
(MCA1) DISC SW2MIN.3, 5 MAX.4, 6 TERMINAL BLOCK DISC. SWITCH CIRCUIT BREAKER RLA Y-LRA X-LRA QTY FLA (EA)
0373SB 148 150 200 250 # 2 - 4/0 # 6 AWG - 350 # 6 AWG - 350 108 241 761 3 4.4
0403SB 160 200 200 250 # 2 - 300 # 6 AWG - 350 # 6 AWG - 350 118 241 761 3 4.4
0453SB 188 200 225 300 # 2 - 300 # 6 AWG - 350 # 6 AWG - 350 140 309 979 3 4.4
0503SB 215 250 300 350 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 161 309 979 3 4.4
0543SB 193 200 250 300 # 2 - 300 # 6 AWG - 350 # 6 AWG - 350 141 309 979 4 4.4
0573SB 227 250 300 350 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 168 309 979 4 4.4
0623SB 247 250 300 400 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 183 309 979 4 4.4
0653SB 232 250 300 350 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 168 309 979 5 4.4

FORM 201.18-W2
5
YORK INTERNATIONAL
NO. OF CONTROL MCA MAX DUAL NON-FUSED
COMPRESSORS POWER (MAX LOAD ELEMENT DISCONNECT
SUPPLY CURRENT) FUSE SIZE SWITCH SIZE
2 115V-1Ø 20A 20A 30A
3 or 4 115V-1Ø 30A 30A 30A
(Non-CE 50/60Hz)
3 or 4 115V-1Ø 25A 30A 30A
(CE 50Hz)
ACR-LINE ACROSS THE LINE START
CB CIRCUIT BREAKER
DEFU DUAL ELEMENT FUSE
DISC SW DISCONNECT SWITCH
FACT MOUNT CB FACTORY-MOUNTED CIRCUIT BREAKER
FACT MOUNT FUSE FACTORY-MOUNTED FUSES
FLA FULL LOAD AMPS
HZ HERTZ
MAX MAXIMUM
MCA MINIMUM CIRCUIT AMPACITY
MIN MINIMUM
MIN NF MINIMUM NON-FUSED
RLA RUNNING LOAD AMPS
S.P. WIRE SINGLE-POINT WIRING
UNIT MTD SERV SW UNIT-MOUNTED SERVICE (NON-FUSED DISCONNECT SWITCH)
WYE-DELTA WYE-DELTA START
XLRA ACROSS-THE-LINE INRUSH LOCKED ROTOR AMPS
YLRA WYE-DELTA INRUSH LOCKED ROTOR AMPS
LEGEND
CHILLER ELECTRICAL SYSTEM #2 FIELD SUPPLIED WIRING
MODEL FIELD PROVIDED POWER SUPPLY FACTORY PROVIDED (LUGS) WIRE RANGE7COMPRESSOR DATA FAN
YCAS MRC MIN NF OVER-CURRENT PROTECTION STANDARD* OPTIONAL* NF OPTIONAL DATA11, 12
(MCA1) DISC SW2MIN.3, 5 MAX.4, 6 TERMINAL BLOCK DISC. SWITCH CIRCUIT BREAKER RLA Y-LRA X-LRA QTY FLA (EA)
0373SB 148 150 200 250 # 2 - 4/0 # 6 AWG - 350 # 6 AWG - 350 108 241 761 3 4.4
0403SB 160 200 200 250 # 2 - 300 # 6 AWG - 350 # 6 AWG - 350 118 241 761 3 4.4
0453SB 188 200 225 300 # 2 - 300 # 6 AWG - 350 # 6 AWG - 350 140 309 979 3 4.4
0503SB 215 250 300 350 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 161 309 979 3 4.4
0543SB 193 200 250 300 # 2 - 300 # 6 AWG - 350 # 6 AWG - 350 141 309 979 4 4.4
0573SB 227 250 300 350 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 168 309 979 4 4.4
0623SB 247 250 300 400 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 183 309 979 4 4.4
0653SB 232 250 300 350 # 1 - 500 # 6 AWG - 350 (2) 3/0-250 168 309 979 5 4.4

YORK INTERNATIONAL
6
ELECTRICAL DATA (Continued)
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).
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.
OPTIONAL 380V / 50HZ / 3Ø 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 or Non-Fused Disconnect
in Option Panel. Internal Branch Circuit Protection (Breakers) per Motor Control Center
FIELD SUPPLIED WIRING
MODEL FIELD PROVIDED POWER SUPPLY FACTORY PROVIDED (LUGS) WIRE RANGE
YCAS MRC MIN NF OVER-CURRENT PROTECTION13 TERMINAL BLOCK NF SERVICE DISC. SWITCH
(MCA1) DISC SW2MIN.3, 5 MAX.4, 6 (LUGS) WIRE RANGE7RATING2(LUGS) WIRE RANGE7RATING2
0373SB 296 400 300 350 # 1 - 500 380 (2) 3/0-250 400
0403SB 321 400 350 400 (2) # 2 - 300 550 (2) 3/0-250 400
0453SB 375 400 400 450 (2) # 2 - 300 550 (2) 3/0-250 400
0503SB 430 600 450 500 (2) # 1 - 500 760 (3) 2/0-400 630
0543SB 387 400 400 450 (2) # 2 - 300 550 (2) 3/0-250 400
0573SB 455 600 500 500 (2) # 1 - 500 760 (3) 2/0-400 630
0623SB 493 600 500 600 (2) # 1 - 500 760 (3) 2/0-400 630
0653SB 464 600 500 500 (2) # 1 - 500 760 (3) 2/0-400 630

FORM 201.18-W2
7
YORK INTERNATIONAL
NO. OF CONTROL MCA MAX DUAL NON-FUSED
COMPRESSORS POWER (MAX LOAD ELEMENT DISCONNECT
SUPPLY CURRENT) FUSE SIZE SWITCH SIZE
2 115V-1Ø 20A 20A 30A
3 or 4 115V-1Ø 30A 30A 30A
(Non-CE 50/60Hz)
3 or 4 115V-1Ø 25A 30A 30A
(CE 50Hz)
ACR-LINE ACROSS THE LINE START
CB CIRCUIT BREAKER
DEFU DUAL ELEMENT FUSE
DISC SW DISCONNECT SWITCH
FACT MOUNT CB FACTORY-MOUNTED CIRCUIT BREAKER
FACT MOUNT FUSE FACTORY-MOUNTED FUSES
FLA FULL LOAD AMPS
HZ HERTZ
MAX MAXIMUM
MCA MINIMUM CIRCUIT AMPACITY
MIN MINIMUM
MIN NF MINIMUM NON-FUSED
RLA RUNNING LOAD AMPS
S.P. WIRE SINGLE-POINT WIRING
UNIT MTD SERV SW UNIT-MOUNTED SERVICE (NON-FUSED DISCONNECT SWITCH)
WYE-DELTA WYE-DELTA START
XLRA ACROSS-THE-LINE INRUSH LOCKED ROTOR AMPS
YLRA WYE-DELTA INRUSH LOCKED ROTOR AMPS
LEGEND
SYSTEM #1 SYSTEM #2
MODEL FACTORY COMPRESSOR DATA FAN FACTORY COMPRESSOR DATA FAN
YCAS CIRCUIT DATA CIRCUIT DATA11, 12
BREAKER RLA Y-LRA X-LRA QTY FLA (EA) BREAKER RLA Y-LRA X-LRA QTY FLA (EA)
0373SB 250 107.9 241 761 3 4.4 250 107.9 241 761 3 4.4
0403SB 250 117.7 241 761 3 4.4 250 117.7 241 761 3 4.4
0453SB 250 139.5 309 979 3 4.4 250 139.5 309 979 3 4.4
0503SB 400 161.3 309 979 3 4.4 400 161.3 309 979 3 4.4
0543SB 250 140.6 309 979 4 4.4 250 140.6 309 979 4 4.4
0573SB 400 167.9 309 979 4 4.4 400 167.9 309 979 4 4.4
0623SB 400 183.1 309 979 4 4.4 400 183.1 309 979 4 4.4
0653SB 400 167.9 309 979 5 4.4 400 167.9 309 979 5 4.4

YORK INTERNATIONAL
8
ELECTRICAL DATA (Continued)
Option not available for units with CE Mark.
NOTE: Model Numbers 0373SB, 0403SB, 0453SB and 0530SB have three (3) fans per circuit; six (6) total.
Model Numbers 0543SB, 0573SB and 0623SB have four (4) fans per circuit; eight (8) total.
Model Number 0653SB has five (5) fans per circuit; ten (10) total.
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).
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.
OPTIONAL 380V / 50HZ / 3Ø SINGLE POINT POWER SUPPLY CONNECTION
WITH FIELD SUPPLIED CIRCUIT PROTECTION
One Field Provided Power Supply Circuit to the chiller. Field Connection to Power Terminal Block or Disconnect Switch in the Option Panel.
No Internal Branch Circuit Protection per Motor Control Center.
FIELD SUPPLIED WIRING SYSTEM #1 SYSTEM #2
MODEL FIELD PROVIDED POWER SUPPLY FACTORY PROVIDED (LUGS) WIRE RANGE COMPRESSOR FANS COMPRESSOR FANS
YCAS MCA1MIN NF OVRCRNT. PRO. TERMINAL BLOCK NF SERVICE DISC. SWITCH DATA DATA11, 12 DATA DATA11,12
DISC SW2MIN.3MAX.4(LUGS) WIRE RANGE7RATING2(LUGS) WIRE RANGE7RLA X-LRA FLA (EA) RLA X-LRA FLA (EA)
0373SB 269 400 300 350 # 1 - 500 400 (2) 3/0-250 108 761 4.4 108 761 4.4
0403SB 291 400 350 400 (2) # 2 - 300 400 (2) 3/0-250 118 761 4.4 118 761 4.4
0453SB 340 400 400 450 (2) # 2 - 300 400 (2) 3/0-250 140 979 4.4 140 979 4.4
0503SB 389 600 450 500 (2) # 1 - 500 630 (3) 2/0-400 161 979 4.4 161 979 4.4
0543SB 352 400 400 450 (2) # 2 - 300 400 (2) 3/0-250 141 979 4.4 141 979 4.4
0573SB 413 600 500 500 (2) # 1 - 500 630 (3) 2/0-400 168 979 4.4 168 979 4.4
0623SB 447 600 500 600 (2) # 1 - 500 630 (3) 2/0-400 183 979 4.4 183 979 4.4
0653SB 422 600 500 500 (2) # 1 - 500 630 (3) 2/0-400 168 979 4.4 168 979 4.4

FORM 201.18-W2
9
YORK INTERNATIONAL
Option not available for units with CE Mark.
NOTE: Model Numbers 0373SB, 0403SB, 0453SB and 0530SB have three (3) fans per circuit; six (6) total.
Model Numbers 0543SB, 0573SB and 0623SB have four (4) fans per circuit; eight (8) total.
Model Number 0653SB has five (5) fans per circuit; ten (10) total.
NO. OF CONTROL MCA MAX DUAL NON-FUSED
COMPRESSORS POWER (MAX LOAD ELEMENT DISCONNECT
SUPPLY CURRENT) FUSE SIZE SWITCH SIZE
2 115V-1Ø 20A 20A 30A
3 or 4 115V-1Ø 30A 30A 30A
(Non-CE 50/60Hz)
3 or 4 115V-1Ø 25A 30A 30A
(CE 50Hz)
ACR-LINE ACROSS THE LINE START
CB CIRCUIT BREAKER
DEFU DUAL ELEMENT FUSE
DISC SW DISCONNECT SWITCH
FACT MOUNT CB FACTORY-MOUNTED CIRCUIT BREAKER
FACT MOUNT FUSE FACTORY-MOUNTED FUSES
FLA FULL LOAD AMPS
HZ HERTZ
MAX MAXIMUM
MCA MINIMUM CIRCUIT AMPACITY
MIN MINIMUM
MIN NF MINIMUM NON-FUSED
RLA RUNNING LOAD AMPS
S.P. WIRE SINGLE-POINT WIRING
UNIT MTD SERV SW UNIT-MOUNTED SERVICE (NON-FUSED DISCONNECT SWITCH)
WYE-DELTA WYE-DELTA START
XLRA ACROSS-THE-LINE INRUSH LOCKED ROTOR AMPS
YLRA WYE-DELTA INRUSH LOCKED ROTOR AMPS
LEGEND
OPTIONAL 380V / 50HZ / 3Ø SINGLE POINT POWER SUPPLY CONNECTION
TO FACTORY CIRCUIT BREAKER
One Field Provided Power Supply Circuit to the chiller. Field Connection to Circuit Breaker in Option Panel.
No internal Branch Circuit Protection per Motor Control Center
FIELD SUPPLIED WIRING SYSTEM #1 SYSTEM #2
MODEL
MCA1FACTORY SUPPLIED BREAKER COMPRESSOR FANS11, 12 COMPRESSOR FANS11, 12
YCAS RATING2WIRE RANGE7(LUGS) RLA X-LRA FLA (EA) RLA X-LRA FLA (EA)
0373SB 269 400 (2) 3/0-250 107.9 761 4.4 107.9 761 4.4
0403SB 291 450 (2) 3/0-250 117.7 761 4.4 117.7 761 4.4
0453SB 340 500 (2) 3/0-250 139.5 979 4.4 139.5 979 4.4
0503SB 389 600 (3) 2/0-400 161.3 979 4.4 161.3 979 4.4
0543SB 352 500 (2) 3/0-250 140.6 979 4.4 140.6 979 4.4
0573SB 413 600 (3) 2/0-400 167.9 979 4.4 167.9 979 4.4
0623SB 447 700 (3) 2/0-400 183.1 979 4.4 183.1 979 4.4
0653SB 422 600 (3) 2/0-400 167.9 979 4.4 167.9 979 4.4

YORK INTERNATIONAL
10
WIRING DIAGRAM
ACROSS-THE-LINE START
NOTES:
1. Field wiring to be in accordance with the current
edition of the National Electrical Code as well as all
other applicable codes and specifications.
2. Numbers along the right side of a diagram are line
identification numbers. The numbers at each line
indicate the line number location of relay contacts.
An unlined contact location signifies a normally closed
contact. Numbers adjacent to circuit lines are the
circuit identification numbers.
3. Any customer supplied contacts must be suitable
for switching 24VDC. (Gold contacts recom-
mended.) Control Wiring must not be run in the same
conduit with any line voltage wiring.
4. To cycle unit on and off automatically with contact
shown, install a cycling device in series with the
flow switch (FSLW). See Note 3 for contact rating
and wiring specifications. Also refer to cautions on
the following page.
5. To stop unit (Emergency Stop) with contacts other
than those shown, install the stop contact between
5 and 1. If a stop device is not installed, a jumper
must be connected between terminals 5 and 1. De-
vice must have a minimum contact rating of 100VA
at 115 volts A.C.
6. Alarm contacts are for annunciating alarm/unit mal-
function. Contacts are rated at 115V, 100VA, resis-
tive load only, and must be suppressed at load by
user.
7. See Installation, Operation and Maintenance Manual
when optional equipment is used.
8. Control panel to be securely connected to earth
ground.
9. Us 2KVA transformer in optional transformer kit un-
less there are optional oil separator sump heaters
which necessitates using a 3KVA transformer.
FIG.1 – ELEMENTARYDIAGRAM – ACROSS-THE-LINESTART
LEGEND
Transient Voltage Suppression
Terminal Block for Customer Connections
Terminal Block for Customer Low Voltage
(Class 2) Connections. See Note 2
Terminal Block for YORK Connections Only
Wiring and Components by YORK
Optional Equipment
Wiring and/or Components by Others
T S
LD03226
LD03227

FORM 201.18-W2
11
YORK INTERNATIONAL
LD03228
WIRING DIAGRAM
ACROSS-THE-LINE START

YORK INTERNATIONAL
12
FIG. 1 – CONTINUED
ELEMENTARY DIAGRAM

FORM 201.18-W2
13
YORK INTERNATIONAL
CAUTION:
No Controls (relays, etc.) should
be mounted in the Smart Panel
enclosure or connected to power
supplies in the control panel.
Additionally, control wiring not
connected to the Smart Panel
should not be run through the
cabinet. This could result in nui-
sance faults.
CAUTION:
Any inductive devices (relays)
wired in series with the flow
switch for start/stop, into the
Alarm circuitry, or pilot relays
for pump starters wired through
motor contactor auxiliary con-
tacts must be suppressed with
YORK P/N 031-00808-000 sup-
pressor across the relay/
contactor coil.
Any contacts connected to flow
switch inputs or BAS inputs on
terminals 13 - 19 or TB3, or any
other terminals, must be sup-
pressed with a YORK P/N 031-
00808-000 suppressor across
the relay/contactor coil.
CAUTION:
Control wiring connected to the
control panel should never be
run in the same conduit with
power wiring.
UNIT CONTROL MIN MAX DUAL NON-FUSED
VOLTAGE POWER CIRCUIT ELEMENT DISC.
SUPPLY AMP. FUSE SIZE SWITCH SIZE
ALL MODELS 115-1-50/60 20A 20A 250V 30A 240V
W/O TRANS.
MODELS -17 200-1-60 15A 15A 250V 30A 240V
WITH -28 230-1-60 15A 15A 250V 30A 240V
TRANS. -46 400-1-60 8A 8A 600V 30A 480V
* -58 575-1-60 8A 8A 600V 30A 600V
* All primary and secondary wiring between transformer and control panel included.
CONTROLPOWER SUPPLY
ELEMENTARY DIAGRAM
LD03279

YORK INTERNATIONAL
14
WIRING DIAGRAM
WYE-DELTA START
NOTES:
1. Field wiring to be in accordance with the current
edition of the National Electrical Code as well as all
other applicable codes and specifications.
2. Numbers along the right side of a diagram are line
identification numbers. The numbers at each line
indicate the line number location of relay contacts.
An unlined contact location signifies a normally closed
contact. Numbers adjacent to circuit lines are the
circuit identification numbers.
3. Any customer supplied contacts must be suitable
for switching 24VDC. (Gold contacts recom-
mended.) Control Wiring must not be run in the same
conduit with any line voltage wiring.
4. To cycle unit on and off automatically with contact
shown, install a cycling device in series with the
flow switch (FSLW). See Note 3 for contact rating
and wiring specifications. Also refer to cautions on
the following page.
5. To stop unit (Emergency Stop) with contacts other
than those shown, install the stop contact between
5 and 1. If a stop device is not installed, a jumper
must be connected between terminals 5 and 1. De-
vice must have a minimum contact rating of 100VA
at 115 volts A.C.
6. Alarm contacts are for annunciating alarm/unit mal-
function. Contacts are rated at 115V, 100VA, resis-
tive load only, and must be suppressed at load by
user.
7. See Installation, Operation and Maintenance Manual
when optional equipment is used.
8. Control panel to be securely connected to earth
ground.
9. Us 2KVA transformer in optional transformer kit un-
less there are optional oil separator sump heaters
which necessitates using a 3KVA transformer.
FIG.2 – ELEMENTARYDIAGRAM–WYE-DELTASTART
LEGEND
Transient Voltage Suppression
Terminal Block for Customer Connections
Terminal Block for Customer Low Voltage
(Class 2) Connections. See Note 2
Terminal Block for YORK Connections Only
Wiring and Components by YORK
Optional Equipment
Wiring and/or Components by Others
T S
LD03226
LD03227

FORM 201.18-W2
15
YORK INTERNATIONAL
WIRING DIAGRAM
WYE-DELTA START
LD03229

YORK INTERNATIONAL
16
FIG. 2 – CONTINUED
ELEMENTARY DIAGRAM

FORM 201.18-W2
17
YORK INTERNATIONAL
CAUTION:
No Controls (relays, etc.) should
be mounted in the Smart Panel
enclosure or connected to power
supplies in the control panel.
Additionally, control wiring not
connected to the Smart Panel
should not be run through the
cabinet. This could result in nui-
sance faults.
CAUTION:
Any inductive devices (relays)
wired in series with the flow
switch for start/stop, into the
Alarm circuitry, or pilot relays
for pump starters wired through
motor contactor auxiliary con-
tacts must be suppressed with
YORK P/N 031-00808-000 sup-
pressor across the relay/
contactor coil.
Any contacts connected to flow
switch inputs or BAS inputs on
terminals 13 - 19 or TB3, or any
other terminals, must be sup-
pressed with a YORK P/N 031-
00808-000 suppressor across
the relay/contactor coil.
CAUTION:
Control wiring connected to the
control panel should never be
run in the same conduit with
power wiring.
UNIT CONTROL MIN MAX DUAL NON-FUSED
VOLTAGE POWER CIRCUIT ELEMENT DISC.
SUPPLY AMP. FUSE SIZE SWITCH SIZE
ALL MODELS 115-1-50/60 20A 20A 250V 30A 240V
W/O TRANS.
MODELS -17 200-1-60 15A 15A 250V 30A 240V
WITH -28 230-1-60 15A 15A 250V 30A 240V
TRANS. -46 400-1-60 8A 8A 600V 30A 480V
* -58 575-1-60 8A 8A 600V 30A 600V
* All primary and secondary wiring between transformer and control panel included.
CONTROLPOWER SUPPLY
ELEMENTARY DIAGRAM
LD03279

YORK INTERNATIONAL
18

FORM 201.18-W2
19
YORK INTERNATIONAL
LD03280

YORK INTERNATIONAL
20
LEGEND
LD03281