York Millennium YCAS 310 Owner's manual

INSTALLATION, OPERATION, & MAINTENANCE
Millennium®
AIR COOLED SCREW LIQUID CHILLERS
AIR COOLED SCREW HERMETIC
Supersedes: Nothing Form 201.10-NM3 (798)
YCAS 310 - 380
STYLE D
YCAJ 3 SYSTEM With EPROM +(Standard, Brine & Metric Models Combined)
031-01714-103 031-01714-103
MASTER SUBORDINATE
28508(r)A

YORK INTERNATIONAL
2
1. INTRODUCTION & PHYSICAL DESCRIPTION .............................. 57
1.1 General ..................................................................................... 57
1.2 Keypad & Display ...................................................................... 57
1.3 Chiller On (Auto) / Off Switch .................................................... 58
1.4 Microprocessor Board ............................................................... 58
1.5 Ancillary Circuit Boards ............................................................. 58
1.6 Current Transformers ................................................................ 59
1.7 EMS/BAS Connections ............................................................. 59
1.8 Microprocessor Board Layout ................................................... 61
1.9 Logic Section Layout ................................................................. 63
2. STATUS KEY & FAULT MESSAGES................................................ 66
2.1 General ..................................................................................... 66
2.2 General Status Messages ......................................................... 66
2.3 Anticipation Control Status Messages ...................................... 68
2.4 Chiller Fault Status Messages .................................................. 69
2.5 System Fault Status Messages................................................. 70
2.6 Printout on Fault Shutdown ....................................................... 73
3. DISPLAY KEYS & OPTION SWITCHES .......................................... 74
3.1 General ..................................................................................... 74
3.2 Chilled Liquid Temperatures Key .............................................. 74
3.3 Ambient Temperature Key......................................................... 75
3.4 System Pressures / Temperatures Keys ................................... 75
3.5 Percentage Motor Current Key ................................................. 76
3.6 Operating Hours / Start Counter Key ........................................ 76
3.7 Options Key & Dip Switch Settings ........................................... 76
4. PRINT KEYS .................................................................................... 80
4.1 General ..................................................................................... 80
4.2 Operating Data Key................................................................... 80
4.3 Operating Data  Local Display Messages ............................... 80
4.4 Operating Data  Remote Printout ............................................ 84
4.5 Fault History Key ....................................................................... 84
4.6 Fault History Data  Local Display Messages .......................... 85
4.7 Fault History Data  Remote Printout ....................................... 89
5. ENTRY KEYS ................................................................................... 91
5.1 General ..................................................................................... 91
5.2 Numerical Keypad ..................................................................... 91
5.3 Enter Key................................................................................... 91
5.4 Cancel Key ................................................................................ 91
5.5 AM / PM Key ............................................................................. 91
5.6 Advance Day Key ...................................................................... 91
6. SETPOINTS KEYS ........................................................................... 92
6.1 General ..................................................................................... 92
6.2 Chilled Liquid Temperature Control........................................... 92
6.3 Chilled Liquid Temp / Range Key .............................................. 96
6.4 Remote Reset Temp / Range Key............................................. 97
7. CLOCK KEYS ................................................................................... 98
7.1 General ..................................................................................... 98
7.2 Set Time Key ............................................................................. 98
7.3 Set Schedule / Holiday Key....................................................... 98
7.4 Manual Override Key ................................................................ 99
8. PROGRAM KEY ............................................................................... 100
8.1 General ..................................................................................... 100
8.2 Program Key  User Programmable Values ............................. 101
8.3 Programming Default Values .................................................. 107
8.4 Compressor Motor Full Load Amps Data.................................. 109
8.5 Design Condensing Temperature Data ..................................... 110
TABLE OF CONTENTS

FORM 201.10-NM3
3
YORK INTERNATIONAL
The 310-380 Millennium Air Cooled Screw liquid chiller
is completely assembled with all interconnecting refrig-
erant piping and internal wiring, ready for field installa-
tion. The unit is pressure-tested, evacuated, and fully
charged with Refrigerant-22, and includes an initial oil
charge. After assembly, an operational test is performed
with water flowing through the cooler to check that each
refrigeration circuit operates correctly.
GENERAL CHILLER INFORMATION
The unit structure is heavy gauge, galvanized steel,
covered with a baked-on enamel. Base rails are of
formed double thickness, painted plate steel. Units are
designed in accordance with ARI 550, NFPA 70 (Na-
tional Electrical Code), ASHRAE/ANSI 15 Safety code
for mechanical refrigeration, ASME, and U.L. (200, 230,
460 and 575-3-60 models). Units are rated in accor-
dance with ARI Standard 550.
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28508(r)A

YORK INTERNATIONAL
4
UNIT NOMENCLATURE
The model number denotes the following characteristics of the unit:
YC A S 310 - 46 Y D
YORK Chiller
YC -York Chiller Design Series
Air Cooled
Type Start
Y = WYE-Delta
X = Across-the-Line
Compressor Design Series
S = Screw
Unit Model Voltage Code:
17 = 200-3-60
28 = 230-3-60
40 = 380-3-60
46 = 460-3-60
58 = 575-3-60

FORM 201.10-NM3
5
YORK INTERNATIONAL
NAMEPLATE ENGINEERING DATA
Engineering Data (stamped on unit nameplate) denotes the following characteristics of the components of the unit:
4M2A3HL6A
2 Compressor “W” Chiller Refrigerant Code
Configuration containing A = R-22
4 Fans & 8 Coils per Module B = R-134a
1 = 50 Hz, Economized, 1 Module
2 = 60 Hz, Economized, 1 Module
3 = 50 Hz, Economized, 1.5 Module
4 = 60 Hz, Economized, 1.5 Module Condenser Fan Code
5 = 50 Hz, Economized, 2 Module 6, 7, A, or B
6 = 60 Hz, Economized, 2 Module
7 = 50 Hz, Economized, 2.5 Module Condenser Code
8 = 60 Hz, Economized, 2.5 Module L = 32" x 83"
9 = 50 Hz, Economized, 3 Module 3 row deep coils
10 = 60 Hz, Economized, 3 Module in both systems
M =32" x 83"
4 row deep coils
Gear in System #1 XHS 120 Compressor in System #1
(A, M, F, H, P or S) 3 row deep coils
in System #2
N =32" x 83"
4 row deep coils
in both systems
Motor in 60 Hz
System#1 Compressor Max. KW
0 = 101 Frame, 7" Long N/A
1 = 101 Frame, 8" Long 85 Cooler Code
2 = 101 Frame, 9" Long 105 H = 16" Cooler
3 = 101 Frame, 9.5" Long N/A K = 18" Cooler
4 = 101 Frame, 10" Long 126 N = 20" Cooler
5 = 101 Frame, 10.75" Long 150
6 = 124 Frame, 9.5" Long (G) 184
7 = 124 Frame, 9.5" Long (K) 219
8 = 124 Frame, 10.75" Long (P) 263 Motor in System #2 Compressor
9 = 124 Frame, 10.75" Long (M) N/A (See System #1 motor list)
Gear in System #2 XHS 120 Compressor
(A, M, F, H, P or S)

YORK INTERNATIONAL
6
OPERATIONAL LIMITATIONS
(English)
LD03164
FIG. 1A – 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
460-3-60 414 506
575-3-60 517 633
MODELYCAS &YDAS COOLER CODE
310, 340, 360, 380 3
TEMPERATURES AND FLOWS
310  380 TONS
MODEL LEAVING WATER COOLER FLOW AIR ON
NUMBER TEMPERATURE (°F) (GPM)3CONDENSER (°F)
YCAS & YDAS MIN.1MAX.2MIN. MAX. MIN. MAX.4
310 40 52 400 1400 0 130
340 40 52 400 1400 0 130
360 40 52 400 1400 0 130
380 40 52 400 1400 0 130
NOTES:
1. For leaving brine temperature below 40°F, contact your nearest YORK office for application requirements.
2. For leaving water temperature higher than 52°F, contact your nearest YORK office for application guidelines.
3. The evaporator is protected against freeze-up to -20°F with an electrical heater as standard.
4. Operation above 115°F requires the Optional High Ambient Kit.
5. YDAS Units have two coolers in parallel.

FORM 201.10-NM3
7
YORK INTERNATIONAL
LD03165
TEMPERATURES AND FLOWS
1089  1335 kW
MODEL LEAVING WATER COOLER FLOW AIR ON
NUMBER TEMPERATURE (°C) (L/S)3CONDENSER (°C)
YCAS & YDAS MIN.1MAX.2MIN. MAX. MIN. MAX.4
310 4.4 11.1 25.2 88.3 -17.7 54.4
340 4.4 11.1 25.2 88.3 -17.7 54.4
360 4.4 11.1 25.2 88.3 -17.7 54.4
380 4.4 11.1 25.2 88.3 -17.7 54.4
NOTES:
1. For leaving brine temperature below 4.4°C, contact your nearest YORK office for application requirements.
2. For leaving water temperature higher than 11°C, contact your nearest YORK office for application guidelines.
3. The evaporator is protected against freeze-up to -28.8°F with an electrical heater as standard.
4. Operation above 46.1°C requires the Optional High Ambient Kit.
5. YDAS Units have two coolers in parallel.
FIG. 1B – 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
460-3-60 414 506
575-3-60 517 633
MODELYCAS &YDAS COOLER CODE
310, 340, 360, 380 3
OPERATIONAL LIMITATIONS
(SI)

YORK INTERNATIONAL
8
PHYSICAL DATA
(English)
MODEL YCAS 310 340 360 380
NOMINAL CAPACITY (TONS) 297.8 323.2 346.5 358.8
NO. OF REFRIG CIRCUITS 3333
COMPRESSOR Sys. 1 120CH*N 120CP*Q 120CP*Q 120CS*Q
MODEL XHS Sys. 2 120CH*N 120BF*L 120CP*Q 120CS*Q
Sys. 3 120CH*N 120CP*Q 120CP*Q 120CS*Q
DIAMETER x LENGTH (in.) 24 x 96 24 x 96 24 x 96 24 x 96
VOLUME (GAL.) 91 91 91 91
COOLER
FLOW (GPM) MIN 400 400 400 400
MAX 1400 1400 1400 1400
CONDENSER Sys. 1 4444
ROWS Sys. 2 4444
Sys. 3 4444
CONDENSER FACE AREA (FT.2)443 443 443 443
NO. 12 12 12 12
CONDENSER HP/KW 3/2.8 3/2.8 3/2.8 3/2.8
FANS NO. OF BLADES 6666
AIRFLOW CFM 202,000 202,000 202,000 202,000
SHIPPING Al. FIN 22,614 22,614 22,614 22,614
WEIGHT Cu. FIN 26,028 26,028 26,028 26,028
(LBS.) OPERATING Al. FIN 23,374 23,374 23,374 23,374
Cu. FIN 26,788 26,788 26,788 26,788
REFRIGERANT CHARGE Sys. 1 210 210 210 210
(LBS. R-22) Sys. 2 235 235 235 235
Sys. 3 235 235 235 235

FORM 201.10-NM3
9
YORK INTERNATIONAL
MODEL YCAS 310 340 360 380
NOMINAL CAPACITY (KW) 1046.6 1135.9 1217.8 1261.0
NO. OF REFRIG CIRCUITS 3333
COMPRESSOR Sys. 1 120CH*N 120CP*Q 120CP*Q 120CS*Q
MODEL XHS Sys. 2 120CH*N 120BF*L 120CP*Q 120CS*Q
Sys. 3 120CH*N 120CP*Q 120CP*Q 120CS*Q
DIAMETER x LENGTH (mm) 609 x 2438 609 x 2438 609 x 2438 609 x 2438
VOLUME (L) 345 345 345 345
COOLER
FLOW (L/sec) MIN 25.2 25.2 25.2 25.2
MAX 88.3 88.3 88.3 88.3
CONDENSER
Sys. 1 4444
ROWS Sys. 2 4444
Sys. 3 4444
CONDENSER FACE AREA (M2)41 41 41 41
NO. 12 12 12 12
CONDENSER HP/KW 3/2.8 3/2.8 3/2.8 3/2.8
FANS NO. OF BLADES 6666
AIRFLOW L/sec. 95,331 95,331 95,331 95,331
SHIPPING Al. FIN 10,258 10,258 10,258 10,258
WEIGHT Cu. FIN 11,806 11,806 11,806 11,806
(Kg) OPERATING Al. FIN 10,602 10,602 10,602 10,602
Cu. FIN 12,151 12,151 12,151 12,151
REFRIGERANT CHARGE Sys. 1 95 95 95 95
(Kg R-22) Sys. 2 107 107 107 107
Sys. 3 107 107 107 107
PHYSICAL DATA
(SI)

YORK INTERNATIONAL
10
YCAS 310  380 DIMENSIONS
(English Units)
LD01596
LD01595
NOTES:
1. Clearances - Recommended YORK clearances for peak performance, reliable operation and maintenance:
Side to wall 8'0"*; Rear to wall 8'0"; Control Panel End to wall 5'0"*; Over the Top - No obstructions allowed; Distance between
adjacent units 12'0", (Walls should be no higher than the unit.)
*No more than one wall can be higher than the top of the unit. The area within the clearances shown above and area under the unit must
be kept clear of all obstructions or clutter that would impede air flow to the unit. In installations where winter operation is intended and snow
accumulations are expected, additional unit height must be provided to insure air flow.
NOTE: Reduced clearances may be used due to jobsite restrictions. The unit will unload to prevent the condenser pressure and motor
current from exceeding the maximum limits and will continue to operate without nuisance high pressure or motor current cutouts even
though the air flow will be restricted at these conditions.
2. Cooler liquid connection sizes (inlet and outlet) 8" victaulic for all models.
3. Spring isolators (OPTIONAL) will increase overall height of unit.

FORM 201.10-NM3
11
YORK INTERNATIONAL
YCAS 310  380 DIMENSIONS
(English Units)
LD01594
LD01593

YORK INTERNATIONAL
12
YCAS 310  380 DIMENSIONS
(SI Units)
LD01600
LD01599
NOTES:
1. Clearances - Recommended YORK clearances for peak performance, reliable operation and maintenance:
Side to wall 2438 mm*; Rear to wall 2438 mm; Control Panel End to wall 1524 mm*; Over the top - No obstructions allowed; Distance
between adjacent units 3658 mm, (Walls should be no higher than the unit.)
*No more than one high wall can be higher than the top of the unit. The area within the clearances shown above and area under the unit
must be kept clear of all obstructions or clutter that would impede air flow to the unit. In installations where winter operation is intended and
snow accumulations are expected, additional unit height must be provided to insure air flow.
NOTE: Reduced clearances may be used due to jobsite restrictions or competitive recommendations. The unit will unload to prevent the
condenser pressure and motor current from exceeding the maximum limits and will continue to operate without nuisance high pressure or
motor current cutouts even though the air flow will be restricted at these conditions.
2. Cooler liquid connection sizes (inlet and outlet) 10" victaulic for all models.
3. Spring isolators (OPTIONAL) will increase overall height of unit.

FORM 201.10-NM3
13
YORK INTERNATIONAL
YCAS 310  380 DIMENSIONS
(SI Units)
LD01598
LD01597

YORK INTERNATIONAL
14
STANDARD COMPRESSOR POWER SUPPLIES
(Each Compressor System Power Supply Individually Protected with Field Supplied Branch Circuit Protection)
NOTES for Electrical Data:
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 10 amps; -28, add 9 amps; -40, add 5 amps; -46, add 4 amps; -58, add 3 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 RLAs (U.L. Standard 1995, Section 36.1).
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.
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.
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.
7. The Incoming Wire Range is the minimum and maximum wire size that can be accommodated by unit wiring lugs. The (1), (2), (3) or (4)
preceeding the wire range indicates the number of termination points or lugs which are available per phase. The (1-2), (1-3) or (1-4)
preceeding the wire range indicates that a single multi-termination lug is available per phase that can accept from two (1-2) to four (1-4) wires
of the wire range specified (1) #1-600MCM OR (2) #1-250MCM indicates that a single lug is supplied and it will accept a single wire up to
600MCM or 2 wires up to 250MCM. Actual wired 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 onthe National Electrical Code and using copper
connectors only. FIeld wiring must also comply with local codes.
8. A ground lug is provided from each compr. 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 #6-350MCM.
9. The 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.
LEGEND
ACR-LINE ACROSS THE LINE
CB CIRCUIT BREAKER
DE FU 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 VOLTAGE CODE
S.P. WIRE SINGLE POINT WIRING 17 = 200-3-60
UNIT MTD SERV SW UNIT MOUNTED SERVICE (NON FUSED DISCONNECT SWITCH) 28 = 230-3-60
WYE-DELTA WYE-DELTA START 40 = 380-3-60
XLRA ACROSS-THE-LINE INRUSH LOCKED ROTOR AMPS 46 = 460-3-60
YLRA WYE-DELTA INRUSH LOCKED ROTOR AMPS 58 = 575-3-60
ELECTRICAL DATA
SYSTEM #1 & #3 (EACH) FIELD SUPPLIED WIRING
MODEL VOLTS MCA1MIN NF D.E. FU C.B. WIRE RANGE7(LUGS) COMPRESSOR FANS
DISC SW2MIN.3MAX.4MIN.5MAX.6WYE-DELTA ACR-LINE RLA Y LRA X LRA FLA (EA)
380 334 400 400 500 400 500 (2) #6 - 250 NA 250 401 N/A 5.2
YCAS310 460 268 400 350 450 350 400 (2) #6 - 250 1/0 - 500 198 331 1051 5.0
575 218 400 300 350 300 350 (2) #6 - 250 #6 - 250 158 145 463 4.9
380 415 400 500 700 500 700 (2) 1/0 - 500 NA 315 483 NA 5.2
YCAS340 460 333 400 400 500 400 500 (2) #6 - 250 1/0 - 500 250 398 1261 5.0
575 269 400 350 450 350 400 (2) #6 - 250 1/0 - 500 199 311 987 4.9
380 415 400 500 700 500 700 (2) 1/0 - 500 NA 315 483 NA 5.2
YCAS360 460 333 400 400 500 400 500 (2) #6 - 250 1/0 - 500 250 398 1261 5.0
575 269 400 350 450 350 400 (2) #6 - 250 1/0 - 500 199 311 987 4.9
380 439 600 600 700 600 700 (2) 1/0 - 500 NA 334 483 NA 5.2
YCAS380 460 352 400 450 600 450 500 (2) #6 - 250 1/0 - 500 265 398 1261 5.0
575 284 400 350 450 350 450 (2) #6 - 250 1/0 - 500 311 311 987 4.9
CONTROL POWER SUPPLY
UNIT CONTROL MIN MAX DUAL NON-FUSED
VOLTAGE POWER CIRCUIT ELEMENT DISC. SW.
SUPPLY AMPACITY FUSE SIZE SIZE
STD.
MODELS W/O 115-1-60 20A 20A 30A
TRANSFORMERS

FORM 201.10-NM3
15
YORK INTERNATIONAL
SYSTEM #2 FIELD SUPPLIED WIRING
MODEL VOLTS MCA1MIN NF D.E. FU C.B. WIRE RANGE7(LUGS) COMPRESSOR FANS
DISC SW2MIN.3MAX.4MIN.5MAX.6WYE-DELTA ACR-LINE RLA Y LRA X LRA FLA (EA)
380 334 400 400 500 400 500 (2) #6 - 250 NA 250 401 N/A 5.2
YCAS310 460 268 400 350 450 350 400 (2) #6 - 250 1/0 - 500 198 331 1051 5.0
575 218 400 300 350 300 350 (2) #6 - 250 #6 - 250 158 145 463 4.9
380 293 400 350 500 350 450 (2) 1/0 - 500 NA 217 316 NA 5.2
YCAS340 460 234 400 300 400 300 350 (2) #6 - 250 1/0 - 500 171 262 838 5.0
575 191 200 250 300 250 300 (2) #6 - 250 1/0 - 500 137 204 655 4.9
380 145 400 500 700 500 700 (2) 1/0 - 500 NA 315 483 NA 5.2
YCAS360 460 333 400 400 500 400 500 (2) #6 - 250 1/0 - 500 250 398 1261 5.0
575 269 400 350 450 350 400 (2) #6 - 250 1/0 - 500 199 311 987 4.9
380 439 600 600 700 600 700 (2) 1/0 - 500 NA 334 483 NA 5.2
YCAS380 460 352 400 450 600 450 500 (2) #6 - 250 1/0 - 500 265 398 1261 5.0
575 284 400 350 450 350 450 (2) #6 - 250 1/0 - 500 211 311 987 4.9
See Power Wiring Schematics on pages 76 - 80.
2
G
LGL2G
3L1 3L2 3L3 2L1 2L2 2L3 1L1 1L2 1L3
GG
BY OTHERS
MASTER PANEL
SUBORDINATE PANEL
SYS. 3 SYS. 2 SYS. 1
230-1-50
230-1-50
STANDARD UNIT COMPRESSOR POWER SUPPLIES
LD01975

YORK INTERNATIONAL
16
YCAS 310-380 CHILLER COMPONENTS
28508(r)A
CONDENSER COILS
FANS
POWER PANEL
CONTROL PANEL
COMP #1
COMP #2
COMP #3

FORM 201.10-NM3
17
YORK INTERNATIONAL
YCAS 310-380 CHILLER COMPONENTS
27507A
FILTER DRIER WATER OUTLET
THERMOSTAT WATER INLET

YORK INTERNATIONAL
18
28510A
28513A
28509A
ECONOMIZER
PIPING
MOTOR
TERMINAL BOX
ECONOMIZER
SERVICE
VALVE
5 TON TXV
MOTOR
COOLING
PIPING
LIQUID
INJECTION
PIPING
OIL PRESSURE
TRANSDUCER
OIL INJECTION
PIPING
SLIDE VALVE
CONTROL
SOLENOID
SUCTION
SERVICE VALVE
SUCTION
PRESSURE
TRANSDUCER
DISCHARGE
MUFFLER
OIL DRAIN LINE
DISCHARGE
SERVICE
VALVE
DISCHARGE
PRESSURE
TRANSDUCER
OPTIONAL
DISCHARGE
MUFFLER
DISCHARGE
PIPING
SUCTION
SERVICE VALVE
DISCHARGE
SERVICE
VALVE
DISCHARGE
PRESSURE
TRANSDUCER
OPTIONAL
DISCHARGE
MUFFLER
SUCTION
PIPING
DISCHARGE
TEMPERATURE
SENSOR
SLIDE VALVE
PISTON OIL
SUPPLY / VENT
LINE
OIL HEATER
ELECTRICAL
JUNCTION BOX
EVAPORATOR

FORM 201.10-NM3
19
YORK INTERNATIONAL
28512A
SYS 1 TXV
SYS 1
SIGHT
GLASS
SYS 1
LIQUID
LINE
SOLENOID
SYS 2
LIQUID
LINE
SOLENOID
SYS 2 TXV
SYS 2
SIGHT
GLASS

YORK INTERNATIONAL
20
28511A
OIL SUPPLY
SOLENOID
OIL PRESSURE
TRANSDUCER
OIL FILTER
SUB COOLER
(ECONOMIZER)
15 TON TXV
LIQUID SUPPLY
SOLENOID
15 TON TXV
ECONOMIZER
PIPING
OIL INJECTION
PIPING
OIL SEPARATOR
5TONTXV
MOTOR
COOLING
PIPING
LIQUID
INJECTION
SOLENOID
VALVE
5TONTXV
LIQUID
INJECTION
PIPING