York YCAS0685 User manual

WIRING DIAGRAM
AIR-COOLED SCREW LIQUID CHILLERS
New Release Form 201.19-W8 (1104)
YCAS AIR-COOLED LIQUID CHILLERS
YCAS0685 THROUGH YCAS0965 (3 COMPRESSOR)
YCAS1065 THROUGH YCAS1215 (4 COMPRESSOR)
STYLE G (R407C)
(50 Hz)
00258VIP

YORK INTERNATIONAL
2
FORM 201.19-W8 (1104)
TABLE OF CONTENTS
NOMENCLATURE .......................................................................................................................... 4
ELECTRICAL NOTES .................................................................................................................... 6
ELECTRICAL DATA ....................................................................................................................... 8
ELEMENTARY WIRING DIAGRAM YCAS0685 - YCAS0965 (3 COMPRESSOR) DXST
DIRECT DRIVE ............................................................................................................................. 12
ELEMENTARY WIRING DIAGRAM YCAS0685 - YCAS0965 (3 COMPRESSOR)
ACROSS-THE-LINE START......................................................................................................... 13
ELEMENTARY WIRING DIAGRAM YCAS0685 - YCAS0965 (3 COMPRESSOR)
WYE DELTA START ..................................................................................................................... 14
ELEMENTARY WIRING DIAGRAM (YCAS0685 - YCAS0965) ACROSS-THE-LINE START
AND WYE-DELTA START ............................................................................................................15
ELEMENTARY WIRING DIAGRAM YCAS0685 - YCAS0965 (3 COMPRESSOR) .....................16
CONNECTION DIAGRAM ELEC. BOX (YCAS0685 - YCAS0965) ...........................................18
ELEMENTARY DIAGRAM DXST DRIVE CONTROL CIRCUIT ...................................................25
CONNECTION DIAGRAM SYSTEM WIRING (YCAS0685 - YCAS0965) ................................... 27
CONNECTION DIAGRAM SYSTEM WIRING ............................................................................. 28
ELEMENTARY WIRING DIAGRAM YCAS1065 - YCAS1215 (4 COMPRESSOR) .....................29
ELEMENTARY WIRING DIAGRAM (YCAS1065 - YCAS1215) ACROSS-THE-LINE START
AND WYE-DELTA START ............................................................................................................32
ELEMENTARY WIRING DIAGRAM YCAS1065 - YCAS1215 (4 COMPRESSOR) .....................34
CONNECTION DIAGRAM ELEC. BOX (YCAS1065 - YCAS1215) ...........................................36
CONNECTION WIRING DIAGRAM.............................................................................................. 38
CONNECTION DIAGRAM ELEC. BOX (YCAS1065 - YCAS1215) ........................................... 40
ELEMENTARY DIAGRAM DXST STARTER CONTROL CIRCUIT ............................................. 44
ELEMENTARY DIAGRAM DXST FAN CONTROL CIRCUIT....................................................... 45
CONNECTION DIAGRAM SYSTEM WIRING STANDARD AND REMOTE EVAP UNITS.......... 46
CONNECTION DIAGRAM SYSTEM WIRING STANDARD AND REMOTE EVAP UNITS.......... 47
COMPRESSOR TERMINAL BOX ................................................................................................ 48
SYSTEM 1 THROUGH 4............................................................................................................... 48

YORK INTERNATIONAL 3
FORM 201.19-W8 (1104)
LIST OF FIGURES
FIG. 1 – WIRING DIAGRAM – DXST DIRECT DRIVE ................................................................. 12
FIG. 2 – WIRING DIAGRAM – ACROSS-THE-LINE START ........................................................ 13
FIG. 3 – WIRING DIAGRAM – WYE DELTA START..................................................................... 14
FIG. 4 – CONTROL POWER TRANSFORMER KIT ..................................................................... 15
FIG. 5 – ELEMENTARY WIRING DIAGRAM ................................................................................ 16
FIG. 6 – CONNECTION DIAGRAM 3 COMPRESSOR................................................................. 18
FIG. 7 – CONNECTION DIAGRAM 3 COMPRESSOR................................................................. 19
FIG. 8 – CONNECTION DIAGRAM 3 COMPRESSOR................................................................. 20
FIG. 9 – CONNECTION DIAGRAM 3 COMPRESSOR................................................................. 22
FIG. 10 – CONNECTION DIAGRAM 3 COMPRESSOR............................................................... 23
FIG. 11 – CONNECTION DIAGRAM 3 COMPRESSOR............................................................... 24
FIG. 12 – ELEMENTARY DIAGRAM 3 COMPRESSOR............................................................... 25
FIG. 13 – ELEMENTARY DIAGRAM DXST DIRECT DRIVE - 3 COMPRESSOR........................ 26
FIG. 14 – CONNECTION DIAGRAM SYSTEM WIRING 3 COMPRESSOR ................................ 27
FIG. 15 – CONNECTION DIAGRAM STSTEM WIRING - 3 COMPRESSOR ............................. 28
FIG. 16 – ELEMENTARY WIRING DIAGRAM - 4 COMPRESSOR .............................................. 29
FIG. 17 – ELEMENTARY WIRING DIAGRAM - ACROSS-THE-LINE START ............................. 30
FIG. 18 – ELEMENTARY WIRING DIAGRAM - WYE DELTA....................................................... 31
FIG. 19 – CONTROL POWER TRANSFORMER KIT ................................................................... 32
FIG. 20 – ELEMENTARY WIRING DIAGRAM .............................................................................. 34
FIG. 21 – CONNECTION DIAGRAM 4 COMPRESSOR............................................................... 36
FIG. 22 – CONNECTION DIAGRAM 4 COMPRESSOR............................................................... 37
FIG. 23 – CONNECTION WIRING DIAGRAM .............................................................................. 38
FIG. 24 – CONNECTION WIRING DIAGRAM .............................................................................. 39
FIG. 25 – CONNECTION DIAGRAM 4 COMPRESSOR............................................................... 40
FIG. 26 – CONNECTION DIAGRAM 4 COMPRESSOR............................................................... 41
FIG. 27 – CONNECTION DIAGRAM 4 COMPRESSOR............................................................... 42
FIG. 28 – CONNECTION DIAGRAM 4 COMPRESSOR............................................................... 43
FIG. 29 – ELEMENTARY DIAGRAM - DXST STARTER CONTROL CIRCUIT.............................44
FIG. 30 – ELEMENTARY DIAGRAM - DXST FAN CONTROL CIRCUIT..................................... 45
FIG. 31 – CONNECTION DIAGRAM SYSTEM WIRING .............................................................. 46
FIG. 32 – CONNECTION DIAGRAM SYSTEM WIRING .............................................................. 47
FIG. 33 – COMPRESSOR TERMINAL BOX, SYSTEM 1-4 ......................................................... 48
PAGE

YORK INTERNATIONAL
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FORM 201.19-W8 (1104)
WARNING
HIGH VOLTAGE
is used in the operation of this equipment.
DEATH OR SERIOUS INJURY
may result if personnel fail to observe safety precautions.
Work on electronic equipment should not be undertaken unless the individual(s) have been trained
in the proper maintenance of equipment and is (are) familiar with its potential hazards.
Shut off power supply to equipment before beginning work and follow lockout procedures. When
working inside equipment with power off, take care to discharge every capacitor likely to hold dan-
gerous potential.
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.
NOMENCLATURE
The Model Number denotes the following characteristics of the unit:
YORK Chiller
YC = YORK Chiller
Air-Cooled
Compressor Type
S = Screw
Nominal Capacity (tons)
Unit Designator
S = Standard Unit
E = High Efficiency
H = High Static Fans
Design Series
Type Start
Y = Star (WYE)-Delta
X = Across-the-Line
Voltage Code
17 = 200-3-60
28 = 230-3-60
40 = 380-3-60
46 = 460-3-60
58 = 575-3-60
Refrigerant
B = 407c
YC A S 0685 E B 17 Y G

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FORM 201.19-W8 (1104)
This page intentionally left blank.

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FORM 201.19-W8 (1104)
ELECTRICAL NOTES
ELECTRICAL NOTES
NOTES & LEGEND
LEGEND
ACR-LINE ACROSS THE LINE START
C.B. CIRCUIT BREAKER
D.E. DUAL ELEMENT FUSE
DISC SW DISCONNECT SWITCH
FACT CB FACTORY-MOUNTED CIRCUIT BREAKER
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
Y-∆WYE-DELTA START
X-LRA ACROSS-THE-LINE INRUSH LOCKED ROTOR AMPS
Y-LRA WYE-DELTA INRUSH LOCKED ROTOR AMPS
VOLTAGE CODE
-17 = 200-3-60
-28 = 230-3-60
-40 = 380-3-60
-46 = 460-3-60
-58 = 575-3-60
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 recommended fuse size is based on 150% of the largest motor RLA plus 100% of the remaining RLAs. 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 recommended circuit breaker is 150% maximum plus 100% of rated load amps included in the circuit. 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 conductors 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 (Wye)-Delta Compressor motor start
must also include factory-provided individual system circuit breakers in each motor control center. All 3 & 4 Compressor
machines equipped with Star-Delta compressor motor start must also include factory-provided individual system 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 cU.L. Machines.

YORK INTERNATIONAL 7
FORM 201.19-W8 (1104)
ELECTRICAL DATA
COMPRESSOR DATA
MAXIMUM kW AND AMPERAGE VALUES FOR DXST COMPRESSORS
COMPRESSOR MODEL AND VOLTAGE CODE
DXS45LA – MOTOR CODE A DXS36LA – MOTOR CODE A DXS24LA – MOTOR CODE (TBD)
(B5N, B5E, B6N, B6E) (A5N, A5E, A6N, A6E) (C5N, C5E, C6N, C6E)
VOLTAGE CODE- -50 -50 -50
MAX kW 113 113 80
MAX AMPS 193 193 135
CONTROL POWER SUPPLY (UNITS WITHOUT STANDARD CONTROL CIRCUIT TRANSFORMER)
NO. OF COMPRESSORS CONTROL POWER
SUPPLY
MCA (MAX LOAD
CURRENT)
MAX DUAL ELEMENT
FUSE SIZE
NON-FUSED
DISCONNECT
SWITCH SIZE
3 or 4 (Non-CE 50/60Hz) 115V-1Ø 30A 30A 30A
CONTROL POWER SUPPLY (UNITS WITH STANDARD CONTROL CIRCUIT TRANSFORMER)
NO. OF COMPRESSORS CONTROL POWER
SUPPLY
MCA (MAX LOAD
CURRENT)
RECOMMENDED
DUAL ELEMENT FUSE
SIZE
NON-FUSED
DISCONNECT
SWITCH SIZE
3 or 4 400V - 50 HZ 9.4A 15A — — —

YORK INTERNATIONAL
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FORM 201.19-W8 (1104)
ELECTRICAL DATA
MULTIPLE POINT POWER SUPPLY CONNECTION
Two field provided power supply circuits to the unit.
Field Power Wiring connections to factory provided,
Non-Fused Disconnect Switches (Opt), or Terminal
Blocks (Opt) in the Option Box.
See page 6 for notes.
TB
or
DS
TB
or
DS
TB1TB2
TB3TB4
Field Supply #2
Field Supply #1
Suitable for:
Across the Line Start
LD05558
NOTE 3
Suitable for:
Across-The-Line-Start
See page 6 for Electrical Data footnotes.
MULTIPLE POINT POWER SUPPLY CONNECTION – 3 & 4 COMPRESSOR UNITS
(Two Field Provided Power Supply Circuits to the Chiller. Field Connections to Factory provided Terminal Block (Std)
or Disconnects (Opt) in the Options Panel. Factory Wired Terminal Blocks or Individual System Circuit Breakers* (opt10) in each of the two Motor Control Centers.)
ELECTRICAL SYSTEM #1 FIELD SUPPLIED WIRING
Field Provided Power Supply Factory Provided (Lugs) Compressor #1 Compressor #3 Fan11, 12
Model Data
YCAS Volts
MRA1
Min NF Protection13 * Standard Optional NF RLA Y-∆LRA X-LRA RLA Y-∆LRA X-LRA Qty FLA (ea) LRA (ea)
(MCA) Disc SW2,9
Min.3, 5 Max.4, 6 Terminal block Disc. Switch
0685EB 380 367 400 400 500 (2) # 2 - 4/0 (2) 3/0 - 250 99 219 692 162 267 857 7 5.7 25
0775EB 380 367 400 400 450 (2) # 2 - 4/0 (2) 3/0 - 250 128 267 857 128 267 857 8 5.7 25
0835EB 380 410 400 450 500 (2) 1/0 - 300 (2) 250 - 500 163 267 857 128 267 857 8 5.7 25
0905EB 380 452 600 500 500 (2) 1/0 - 300 (2) 250 - 500 163 267 857 163 267 857 8 5.7 25
0965EB 380 442 600 450 500 (2) 1/0 - 300 (2) 250 - 500 155 267 857 148 267 857 11 5.7 25
1065EB 380 367 400 400 450 (2) # 2 - 4/0 (2) 3/0 - 250 128 267 857 128 267 857 8 5.7 25
1135EB 380 409 400 450 500 (2) 1/0 - 300 (2) 250 - 500 162 267 857 128 267 857 8 5.7 25
1215EB 380 452 600 500 500 (2) 1/0 - 300 (2) 250 - 500 162 267 857 162 267 857 8 5.7 25
Wire Range7
Over-current

YORK INTERNATIONAL 9
FORM 201.19-W8 (1104)
ELECTRICAL DATA (CONT'D)
MULTIPLE POINT POWER SUPPLY CONNECTION
WITH OPTIONAL INDIVIDUAL SYSTEM CIRCUIT
BREAKERS
Two field provided power supply circuits to the unit with
individual branch circuit protection. Field Power Wiring
connections to factory provided, Non-Fused Disconnect
Switches (Opt), or Terminal Blocks (Opt) in the Option
Box. Factory connections to each of the Circuit Break-
ers in each of the two power panels.
See page 6 for notes. LD05559 NOTE 3
Suitable for:
Y - ∆ Start and Across the Line Start
CE Mark
Field Supply #1
CB1CB2
CB3CB4TB
or
DS
TB
or
DS
Field Supply #2
Suitable for:
Y - ∆Start and
Across the Line Star
t
CE Mark
ELECTRICAL SYSTEM #2 FIELD SUPPLIED WIRING
Field Provided Power Supply Factory Provided (Lugs) Compressor #1 Compressor #3 Fan11, 12
Model Data
YCAS Volts
MRA1
Min NF Protection13 Standard Optional NF RLA Y-∆LRA X-LRA RLA Y-∆LRA X-LRA Qty FLA (ea) LRA (ea)
(MCA) Disc SW2,9
Min.3, 5 Max.4, 6 Terminal block Disc. Switch
0685EB 380 141 150 175 225 (1) # 2 - 4/0 (1) # 2 - 4/0 99 219 629 —- —- —- 3 5.7 25
0775EB 380 184 200 225 300 (1) # 2 - 4/0 (1) #4 - 300 128 267 857 —- —- —- 4 5.7 25
0835EB 380 184 200 225 300 (1) # 2 - 4/0 (1) #4 - 300 128 267 857 —- —- —- 4 5.7 25
0905EB 380 226 250 300 350 (1) 1/0 - 300 (1) #4 - 300 163 267 857 —- —- —- 4 5.7 25
0965EB 380 223 250 300 350 (1) 1/0 - 300 (1) #4 - 300 155 267 857 —- —- —- 5 5.7 25
1065EB 380 367 400 400 450 (2) # 2 - 4/0 (2) 3/0 - 250 128 267 857 128 267 857 8 5.7 25
1135EB 380 409 400 450 500 (2) 1/0 - 300 (2) 250 - 500 162 267 857 128 267 857 8 5.7 25
1215EB 380 452 600 500 500 (2) 1/0 - 300 (2) 250 - 500 162 267 857 162 267 857 8 5.7 25
Wire Range7
Over-current

YORK INTERNATIONAL
10
FORM 201.19-W8 (1104)
ELECTRICAL DATA (CONT'D)
OPTIONAL SINGLE POINT POWER SUPPLY
CONNECTION AND INDIVIDUAL SYSTEM CIRCUIT
BREAKERS
One field provided power supply circuits to the unit with
individual branch circuit protection. Field Power Wiring
connections to factory provided, Non-Fused Disconnect
Switches (Opt), or Terminal Blocks (Opt) in the Option
Box.
Suitable for:
Y - ∆ Start and
Across-The-Line-Start
LD05554
NOTES:
1. – – – – – – – Dashed Line indicates Field Provided Wiring.
2. The above recommendations are based on the National Electrical Code and using copper conductors only.
Field wiring must also comply with local codes.
See notes below.
CB3CB4
CB1CB2
TB
or
DS
F
ield Supply
Suitable for:
Y - ∆Start and
Across the Line Start
Control Panel Wiring As Show
n
The Two Compressor Diagram
See Note 3
See Note 3 on
page 6.
OPTIONAL SINGLE POINT POWER SUPPLY CONNECTION
WITH INDIVIDUAL SYSTEM CIRCUIT BREAKERS – 3 AND 4 COMPRESSOR UNITS
One Field Provided Power Supply Circuit to the chiller. Field connections to Factory Provided Terminal Block (standard) or Non-Fused Disconnect (option)
in the Options Panel. Individual System Circuit Breakers in each Motor Control Center.
CHILLER
FIELD-SUPPLIED WIRING
MODEL FIELD PROVIDED POWER SUPPLY FACTORY PROVIDED (LUGS) WIRE RANGE 7
YCAS MIN NF OVER-CURRENT PROTECTION STANDARD OPTIONAL NF
MRA1
DISC SW 2,9 MIN.3, 5 MAX.4, 6 TERMINAL BLOCK DISC. SWITCH
0685EB 482 600 600 600 (2) 2/0 - 500 (2) 250 - 500
0775EB 517 600 600 600 (2) 2/0 - 500 (2) 250 - 500
0835EB 560 600 700 700 (2) 2/0 - 500 (2) 250 - 500
0905EB 637 800 700 700 (3) 1/0 - 300 (3) 2/0 - 400
0965EB 625 800 800 800 (3) 1/0 - 300 (3) 2/0 - 400
1065EB 669 800 700 700 (3) 2/0 - 500 (3) 2/0 - 400
1135EB 745 800 800 800 (3) 2/0 - 500 (4) 4/0 - 500
1215EB 822 1000 1000 1000 (3) 2/0 - 500 (4) 4/0 - 500

YORK INTERNATIONAL 11
FORM 201.19-W8 (1104)
ELECTRICAL DATA (CONT'D)
ELECTRICAL SYSTEM #1
Compressor #1 Data Compressor #3 Data Fan Data11, 12
RLA Y-∆LRA X-LRA RLA Y-∆LRA X-LRA Qty FLA (ea) LRA (ea)
99 219 692 162 267 857 7 5.7 25
128 267 857 128 267 857 8 5.7 25
163 267 857 128 267 857 8 5.7 25
163 267 857 163 267 857 8 5.7 25
155 267 857 148 267 857 11 5.7 25
128 267 857 128 267 857 8 5.7 25
162 267 857 128 267 857 8 5.7 25
162 267 857 162 267 857 8 5.7 25
ELECTRICAL SYSTEM #2
Compressor #2 Data Compressor #4 Data Fan Data11, 12
RLA Y-∆LRA X-LRA RLA Y-∆LRA X-LRA Qty FLA (ea) LRA
(ea)
99 219 629 — — — 3 5.7 25
128 267 857 — — — 4 5.7 25
128 267 857 — — — 4 5.7 25
163 267 857 — — — 4 5.7 25
155 267 857 — — — 5 5.7 25
128 267 857 128 267 857 8 5.7 25
162 267 857 128 267 857 8 5.7 25

YORK INTERNATIONAL
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FORM 201.19-W8 (1104)
FIG. 1 –WIRING DIAGRAM – DXST DIRECT DRIVE
LD09350
035-15937-103
Rev - A
ELEMENTARY WIRING DIAGRAM
YCAS0685 - YCAS0965 (3 COMPRESSOR)
DXST DIRECT DRIVE

YORK INTERNATIONAL 13
FORM 201.19-W8 (1104)
FIG. 2 –WIRING DIAGRAM – ACROSS-THE-LINE START
LD09352
ELEMENTARY WIRING DIAGRAM
YCAS0685 - YCAS0965 (3 COMPRESSOR)
ACROSS-THE-LINE START
LD09352
035-15937-103
Rev - A

YORK INTERNATIONAL
14
FORM 201.19-W8 (1104)
FIG. 3 –WIRING DIAGRAM – WYE DELTA START
ELEMENTARY WIRING DIAGRAM
YCAS0685 - YCAS0965 (3 COMPRESSOR)
WYE DELTA START
035-15937-10
3
Rev - A
LD09353

YORK INTERNATIONAL 15
FORM 201.19-W8 (1104)
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. Contacts must be suitable for switching 24VDC, (Gold
contacts recommend). Wiring shall not be run in the same
conduit with any line voltage wiring.
3. To cycle the unit on and off automatically with contact
shown, install a cycling device in series with the flow
switch (FLSW). See note 2 for contact rating and wiring
specifications.
4. To stop unit (Emergency Stop) with contacts other than
those shown, install the stop contact between terminals 5
and 1. If a stop device is not installed, a jumper must be
connected between terminals 5 and 1. Device must have
a minimum contact rating of 100A at 115 volts A.C.
5. Alarm contacts are for annunciating alarm/unit malfunc-
tion. Contacts are rated at 115V, 100VA, load only, and
must be suppressed at load by user.
6. See Installation, Operation and Maintenance Manual when
optional equipment is used.
7. Jumper must be installed for three compressor operation.
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
ELEMENTARY WIRING DIAGRAM (YCAS0685 - YCAS0965)
ACROSS-THE-LINE START
AND
WYE-DELTA START
LD09351
FIG. 4 –CONTROL POWER TRANSFORMER KIT
035-15937-103
Rev - A
035-15937-103
REV A

YORK INTERNATIONAL
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FORM 201.19-W8 (1104)
FIG. 5 –ELEMENTARY WIRING DIAGRAM LD010031
ELEMENTARY WIRING DIAGRAM
YCAS0685 - YCAS0965 (3 COMPRESSOR)

YORK INTERNATIONAL 17
FORM 201.19-W8 (1104)
LD010032
CAUTION:
No Controls (relays, etc.) should be mounted in the Smart Panel
enclosure or connected to power supplies in the control panel. Ad-
ditionally, control wiring not connected to the Smart Panel should not
be run through the cabinet. This could result in nuisance 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 contacts must be
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.
CONTROL POWER SUPPLY
suppressed with YORK P/N 031-00808-000 suppressor 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.

YORK INTERNATIONAL
18
FORM 201.19-W8 (1104)
FIG. 6 –CONNECTION DIAGRAM 3 COMPRESSOR
LD010033
CONNECTION DIAGRAM ELEC. BOX
(YCAS0685 - YCAS0965)

YORK INTERNATIONAL 19
FORM 201.19-W8 (1104)
FIG. 7 –CONNECTION DIAGRAM 3 COMPRESSOR
LD010034
Power Panel 035-15937-104
REV E

YORK INTERNATIONAL
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FORM 201.19-W8 (1104)
FIG. 8 –CONNECTION DIAGRAM 3 COMPRESSOR LD010035
CONNECTION WIRING DIAGRAM (CONT'D)
Power Panel
035-15937-104
REV E