York YCAZ33BA3 User manual

INSTALL., OPER., MAINTEN.
RecipPak LIQUID CHILLERS
AIR COOLED  RECIPROCATING HERMETIC
Supersedes: 150.44-NM3 in ERR only Form 150.44-NM4 (395)
60 HZ MODELS
YCAZ33BA3, YCAZ44BA3, YCAZ74BB3,
YCAZ77CB3, YCAZ88DB3
STYLE A*
*With EPROM 031-01096C001 (Standard, Brine & Metric Models, Combined)
26195A
200, 230, 460-3-60

YORK INTERNATIONAL
2
TABLE OF CONTENTS
GENERAL INFORMATION ............................................................................ 2
UNIT NOMENCLATURE ................................................................................ 3
OPERATIONAL LIMITATIONS ....................................................................... 7
PHYSICAL DATA ............................................................................................ 8
DIMENSIONS................................................................................................. 9
ELECTRICAL DATA ....................................................................................... 10
INSTALLATION .............................................................................................. 12
WIRING DIAGRAM ........................................................................................ 16
UNIT CONTROLS AND OPERATION ........................................................... 22
COMPRESSOR CAPACITY CONTROL ........................................................ 66
SYSTEM START-UP AND OPERATION ....................................................... 67
PREVENTATIVE MAINTENANCE ................................................................. 71
OPTIONS ....................................................................................................... 72
TROUBLESHOOTING CHART ...................................................................... 84
GENERAL DESCRIPTION
These packaged liquid chillers are completely self-con-
tained outdoor units shipped ready for final job installa-
tion requiring only liquid connections, power and con-
trol wiring. They are designed primarily for central sta-
tion air conditioning applications with normal installa-
tions being on roof-tops or on ground level beside the
building.
WARNING
HIGH VOLTAGE
is used in the operation of this equipment.
DEATH OR SERIOUS INJURY
may result if personal 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 special care to discharge every capacitor likely to
hold dangerous 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.
GENERAL INFORMATION
CODE STATUS
The units are designed in accordance with UL (200,
230, 460-3-60), N.E.C., ASHRAE/ANS STANDARD 15,
and ASME Codes.

FORM 150.44-NM4
3
YORK INTERNATIONAL
UNIT NOMENCLATURE
The model number denotes the following characteristics of the unit:
Y C A Z 7 4 B B 3 - 46 P A X
YORK
Chiller
Air Cooled
Compressor Type (J or Z)
System #1 Compressor Code:
3, 4, 7, 8 (See PHYSICAL DATA)
System #2 Compressor Code:
3, 4, 7, 8 (See PHYSICAL DATA)
Cooler Code:
B, C, D
Condenser Code:
A, B
S = Special
X = Blank if not used
Design Level
Type Start:
P = Part Wind
A = Across-The-Line
Voltage Code:
17 = 200-3-60
28 = 230-2-60
40 = 380-3-60
46 = 460-3-60
50 = 380/415-3-50
58 = 575-3-60
64 = 346-3-50
Fan Code:
2, 3
Compressor Series
No. of Cylinders (4, 6)
Displacement
No. of Steps of Unloading (0, 1, 2)
Style (B)
Motor Size Code
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
(A = A.O. Smith, G = G.E.)
Z 6 W 2 B E -17 A

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CONDENSER FANS
CONTROL PANEL POWER PANEL
SYS 1
COMPRESSOR
COOLER
INLET
SHIPPING BRACKET
(Removed After Installation)
HEATER
COOLER
OUTLET
COOLER
SYS 2
COMPRESSOR
26195A(R)
FIG. 1  UNIT COMPONENTS

FORM 150.44-NM4
5
YORK INTERNATIONAL
FIG. 1  UNIT COMPONENTS (Contd)
LD01980
HOT GAS BY-PASS (OPTIONAL)
SYSTEM #1
25996A

YORK INTERNATIONAL
6
FIG. 1A  COMPRESOR COMPONENTS
27294A
6 CYLINDER
MODEL Z COMPRESSOR
OIL
PRESSURE
ACCESS CONN.
OIL LEVEL
SIGHT GLASS
OIL CHARGING
VALVE
TERMINAL
BOX
CAPACITY
CONTROL
SOLENOID
DISCHARGE
STOP VALVE
DATA
PLATE
OIL
PUMP
CRANKCASE
HEATER
27296A
SUPPRESSORS
MOTOR TERMINALS
MOTOR PROTECTOR (MP)

FORM 150.44-NM4
7
YORK INTERNATIONAL
OPERATIONAL LIMITATIONS
VOLTAGE LIMITATIONS
The following voltage limitations are absolute and op-
eration beyond these limits may cause serious dam-
age to the compressor.
VOLTAGES
TEMPERATURES AND FLOWS
MODEL LVG. WATER COOLER AIR ON
YCA TEMP. °F GPM COND. - °F
MIN.1MAX. MIN. MAX. MIN.2MAX.3
Z33BA3 40 50 75 250 0 130
Z44BA3 40 50 90 250 0 130
Z74BB3 40 50 90 250 0 130
Z77CB3 40 50 90 315 0 130
Z88DB3 40 50 130 390 0 130
NOTES:
1. Units can be used for brine temperatures between 15°F and 39°F
by resetting standard controls.
2. Operation below 25°F requires the Optional Low Ambient Kit
(Minimum recommended operating temperature is 0°F).
3. Operation above 115°F requires Optional High Ambient Kit (Maxi-
mum recommended operating temperature is 130°F).
4. The evaporator is protected against freeze-up to 20°F with an
electrical heater cable standard.
CAUTION: Excessive flow will cause damage to the
cooler. Do not exceed maximum Cooler
GPM. Special care should be taken when
multiple chillers are fed by a single
pump.
LD01981
CODE MODEL YCA
BZ33BA3
CZ44BA3, Z74BB3, Z77CB3
DZ88DB3
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

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PHYSICAL DATA
MODEL YCA 60 HZ Z33BA3 Z44BA3 Z74BB3 Z77CB3 Z88DB3
NOMINAL TONS 51.8 58.2 65.1 70.5 81.9
NO. OF REFRIG. CIRCUITS 22222
ACCESSIBLE (2)ZB4K1-B (2)ZB4M1-C (1)ZB6S1-D (2)ZB6S1-D (2)ZB6WZ-E
HERMETIC (35 HP) (45 HP) (55 HP) (55 HP) (65 HP)
COMPRESSOR MODEL (1)ZB4M1-C
(COMPRESSOR HP) (45 HP)
UNIT STANDARD 5 Steps 5 Steps 5 Steps 5 Steps 5 Steps
CAPACITY
CONTROL OPTIONAL N/A N/A 6 Steps 7 Steps 7 Steps
CONDENSER  DWP 450 PSIG 22222
NO. OF FANS (42" Dia Direct Drive)
HP/KW Each (850 RPM) 3/2.5 3/2.5 3/2.5 3/2.5 3/2.5
CFM TOTAL 30,300 30,300 34,400 34,400 34,400
COOLER  DUAL CIRCUITED
DWP  235 PSIG REF. SIDE,
150 PSIG WATER SIDE
DIA. x LENGTH 11" x 8" 11" x 8" 11" x 8" 12" x 8" 14" x 8"
WATER VOLUME (GALS.) 25 25 25 30 38
GPM MIN. 75 75 75 90 130
MAX. 250 250 250 315 390
SHIPPING AL Fins 4,800 5,150 5,550 5,675 5,850
WEIGHT CU Fins 5,350 5,700 6,375 6,500 6,675
LBS. OPERATING AL Fins 5,000 5,350 5,750 5,900 6,150
CU Fins 5,550 5,900 6,575 6,725 6,975
REFRIGERANT CHARGE Sys. 1 42 50 56 56 65
(LBS. R-22) Sys. 2 42 50 50 56 65

FORM 150.44-NM4
9
YORK INTERNATIONAL
WEIGHT DISTRIB. WATER CONN.
MODEL YCA (LBS.) INLET/OUTLET
A B C D DIA. (IN.)
Z33BA3 791 791 1707 1707 4
Z44BA3 858 858 1811 1811 4
Z74BB3 931 931 1948 1948 4
Z77CB3 935 935 2011 2011 6
Z88DB3 977 977 2079 2079 6
Z88DB3 977 977 2079 2079 6
1. CLEARANCES  Recommended YORK required clearances to
prevent condenser air recirculation and faulty operation of units
are as follows:
Side to wall - 5'0" ** / Rear to wall - 8'0" ** / Front to wall -
8'0" ** / Top - 50'0" / Distance between adjacent units - 12'0"
* No more than one wall can be higher than the top of the unit.
Failure to heed recommended clearances may result in re-
duced system performance, nuisance shutdowns and ser-
vicing problems.
The area within the clearances 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 in-
tended and snow accumulations are expected, additional unit
height must be provided to insure full air flow.
2. Panel bottom to be punched in field to accommodate power wir-
ing conduit.
3. Use of isolators (optional) will increase height of unit approxi-
mately 6".
4. Drawings not to scale and are for planning purposes only. Refer
to QMS drawings for most up-to-date dimensions.
5. Be sure to review WARNINGS on page 2 prior to installation.
CAUTION
FAILURE TO HEED FOLLOWING MINIMUM RECOM-
MENDED CLEARANCES MAY RESULT IN REDUCED
SYSTEM PERFORMANCE, NUISANCE SHUT-
DOWNS, AND SERVICE PROBLEMS.
NOTES
CHILLER Y X
Z33BA3 7'2" 1'2-1/8"
Z44BA3 7'2" 1'2-1/8"
Z74BB3 7'2" 1'2-1/8"
Z77CB3 7'0" 1'3-1/8"
Z88DB3 7'1" 1'3-3/4"
DIMENSIONS
LD01982
LD01983
LD01984

YORK INTERNATIONAL
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NOTES
1. Minimum Circuit Ampacity (MCA) is based on 125% of the rated load amps for the largest motor plus 100% of the loaded 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 YCA Tables: -17, add 10 amps; -28, add 9 amps; -46, add 4 amps; -58, add 3 amps.
2. 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). It is
not recommended in applications where brown-outs, frequent starting and stopping of the unit, and/or operation at ambient temperatures
in excess of 95°F is anticipated.
3. 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.
4. 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.
5. Maximum HACR is based on 225% maximum plus 100% of the rated load amps for all loads included in the circuit, per circuit, per UL 1995
Fig 36.2.
6. The INCOMING WIRE RANGE is the minimum and maximum wire size that can be accommodated by the unit wiring lugs. The (1), (2),
(3), or (4) preceding the wire range indicates the number of termination points available per phase of the wire range specified. The (1 -2)
preceding the wire range indicates that a single double-barreled lug is available per phase that can accept up to two 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 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 Electrical Code and using copper connectors only.
Field wiring must also comply with local codes.
7. 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 - #2/0.
UNIT POWER SUPPLY INCOMING WIRE RANGE6SYS. 1 COMPR.
MODEL MAX SIZE
YCA MCA1DUAL ELEM DISC CKT BKR PW ACL YORK SUPPLIED NON-FUSED ACL/ PW/ FUSE SIZE MIN 4HACR START START DISCONNECT (OPTIONAL) RLA LRA LRA
MIN 2MAX 3TYPE 5
Z33BA3 -17 274 350 350 400 350 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 112 582 368
Z33BA3 -28 237 300 300 400 300 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 97 506 320
Z33BA3 -46 119 150 150 200 150 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 48.5 253 160
Z33BA3 -58 95 125 125 200 125 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 38.8 202 128
Z44BA3 -17 319 400 450 400 450 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 132 674 414
Z44BA3 -28 276 350 350 400 350 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 114 586 360
Z44BA3 -46 138 175 175 200 175 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 57 293 180
Z44BA3 -58 110 150 150 200 150 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 45.6 234 144
Z74BB3 -17 353 450 500 400 500 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 159 741 582
Z74BB3 -28 306 350 400 400 400 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 138 644 506
Z74BB3 -46 153 200 200 200 200 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 69 322 253
Z74BB3 -58 122 150 175 200 175 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 55 258 202
Z77CB3 -17 380 450 500 600 500 (2)#4-250MCM N/A (1-2) #2/0-500MCM 159 741 582
Z77CB3 -28 330 400 450 400 450 (2)#4-250MCM NM (1) #1-600MCM OR (2) #1-250MCM 138 644 506
Z77CB3 -46 165 200 225 200 225 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 69 322 253
Z77CB3 -58 131 175 175 200 175 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 55 258 202
Z88DB3 -17 468 6W 600 600 600 (2)#4-250MCM NM (1-2) #2/0-500MCM 198 880 675
Z88DB3 -28 406 500 500 600 500 (2)#4-250MCM NM (1-2) #2/0-500MCM 172 765 587
Z88DB3 -46 203 250 250 250 250 (2)#4-250MCM (2)*4-250MCM (1) #6-350MCM 86 383 294
Z88DB3 -58 162 200 225 200 225 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 68.8 306 235
ELECTRICAL DATA

FORM 150.44-NM4
11
YORK INTERNATIONAL
SYS. 2 COMPR. COND.
RLA ACL/ PW/ FAN
LRA LRA FLA
EACH
112 582 368 11.0
97 506 320 9.6
48.5 253 160 4.8
38.8 202 128 3.8
132 674 414 11.0
114 586 360 9.6
57 293 180 4.8
45.6 234 144 3.8
132 674 414 11.0
114 586 360 9.6
57 293 180 4.8
45.6 234 144 3.8
159 741 582 11.0
138 644 506 9.6
69 322 253 4.8
55 258 202 3.8
198 880 675 11.0
172 765 587 9.6
86 383 294 4.8
68.8 306 235 3.8
LD01985
CONTROL POWER SUPPLY
UNIT CONTROL MIN CIRCUIT MAX DUAL NON-FUSED
VOLTAGE POWER SUPPLY AMPACITY ELEMENT FUSE SIZE DISC. SW. SIZE
Std. Models w/o Transformers 115-1-60 20A 20A, 250V 30A, 240V
LEGEND:
VOLT = Voltage
MCA = Minimum Circuit Ampacity
DISC = Disconnect
ACL = Across-the-Line
PW = Part Wind
N/A = Not Available
RLA = Running Load Amps
FLA = Full Load Amps
ACL/LRA = Across-the-Line Inrush Amps
PW/LRA = Part Wing Inrush Amps
CKT BRK = Circuit Breaker
HACR = Heating, Air Conditioning and Refrigeration

YORK INTERNATIONAL
12
INSTALLATION
INSTALLATION CHECK LIST
The following items, 1 thru 5, must be checked before
placing units into operation.
1. Inspect unit for shipping damage.
2. Rig unit per Fig. 3. Remove unpainted shipping
braces after installation.
WARNING:
To protect warranty, this equipment must be in-
stalled and serviced by an authorized YORK ser-
vice mechanic or a qualified service person ex-
perienced in chiller installation. Installation must
comply with all applicable codes, particularly in
regard to electrical wiring and other safety ele-
ments such as relief valves, HP cutout settings,
design working pressures and ventilation require-
ments consistent with the amount and type of re-
frigerant charge.
Lethal voltages exist within the control panel. Be-
fore servicing, open and tag all disconnect
switches. Refer to WARNINGS on page 2.
3. Open unit only to install water piping system. Do not
remove protective covers from water connections
until piping is ready for attachment. Check water pip-
ing to insure cleanliness.
4. Pipe unit using good piping practice and consistent
with local code requirements.
5. Check to see that unit is installed and operated within
LIMITATIONS shown on page 7.
The following pages outline procedures to be followed.
HANDLING
These units are shipped as completely assembled units
containing full operating charge, and care should be
taken to avoid damage due to rough handling.
The units are shipped without export crating unless it
is specified by Sales Order.
A unit should be lifted by inserting hooks through the
holes provided in unit top rails.
26195A
FIG. 3  RIGGING THE CHILLER

FORM 150.44-NM4
13
YORK INTERNATIONAL
INSPECTION
Immediately upon receiving the unit, it should be in-
spected for possible damage which may have occurred
during transit. If damage is evident, it should be noted
on the carriers freight bill. A written request for inspec-
tion by the carriers agent should be made at once. See
Instruction 50.15-NM for more information and details.
LOCATION AND CLEARANCES
These units are designed for outdoor installations on
ground level, rooftop, or beside a building. The location
should be selected for minimum sun exposure and to
insure an adequate supply of fresh air for the condenser.
The units must be installed with sufficient clearances for
air entrance to the condenser coil, for air discharge away
from the condenser, and for servicing access.
In installations where winter operation is intended and
snow accumulations are expected, additional height
must be provided to insure normal condenser air flow.
(See DIMENSIONS).
FOUNDATION
The unit should be mounted on a flat and level founda-
tion, floor or rooftop, capable of supporting the entire
operating weight of the equipment. See PHYSICAL
DATA for operating weight. If the unit is elevated be-
yond the normal reach of service personnel, a suitable
catwalk must be constructed around the unit. The cat-
walk must be capable of supporting service personnel,
their equipment, and the reciprocating compressors.
Ground Level Locations
It is important that the units be installed on a substan-
tial base that will not settle. A one piece concrete slab
with footers extended below the frost line is highly
recommended. Additionally, the slab should not be tied
to the main building foundations as noise and vibration
may be transmitted.
Mounting holes are provided in the steel channel for
bolting the unit to its foundation. (See DIMENSIONS).
For ground level installations, precautions should be taken
to protect the unit from tampering by or injury to unautho-
rized persons. Screws and/or latches on access panels will
prevent casual tempering. However, further safety precau-
tions such as a fenced-in enclosure or locking devices on
the panels may be advisable. A tamperproof kit is available
as an option. Check local authorities for safety regulations.
Rooftop Locations
Choose a spot with adequate structural strength to
safely support the entire weight of the unit and service
personnel. Care must be taken not to damage the roof.
Consult the building contractor or architect if the roof is
bonded. Roof installations should have wooden beams
(treated to reduce deterioration), cork, rubber, or vibra-
tion isolators under the base to minimize vibration.
SHIPPING BRACES
Two shipping brackets (typically galvanized steel) which
run diagonally along each side of the unit, must be re-
moved once the unit is mounted on its foundation. A
third bracket on the right rear of the unit should also be
removed. This bracket runs across the bottom right
corner of the unit behind the compressors.
SPRING ISOLATORS (OPTIONAL)
When ordered, four (4) vibration isolators will be fur-
nished.
1. Identify isolator and locate at proper mounting point
using table on page 14.
2. Block up equipment so as to install spring mounts
with pin on top of housing into Equipment Mounting
Holes.
3. Mounting Adjust Nut is inside the isolator mount lo-
cated just below the top plate of the mount. Turn
nut 2 turns clockwise (down) to load spring mount
at each location.
4. Take two additional turns on Adjustment Nut of each
location.
5. Repeat step No. 3 as many times as necessary to
bring height of isolator to proper height.
6. Take additional turns on mounts at low side or cor-
ner to level the equipment.
COMPRESSOR MOUNTING
The compressors are mounted on four (4) isolator pads
(one under each compressor foot). (See Fig. 4). The
mounting bolts are not to be loosened or adjusted at
installation.
FIG. 4  COMPRESSOR MOUNTING PAD
25112A
COMPRESSOR MOUNTING PAD

YORK INTERNATIONAL
14
WEIGHT DISTRIBUTIONS AND ISOLATOR LOCATIONS FOR EACH MODEL
MODEL WEIGHT DISTRIBUTION (LBS.) OPERATING
YCA ABCDTOTAL
CU/AL
Z33BA3 745 745 1610 1610 4710
Z44BA3 805 805 1700 1700 5010
Z74BB3 875 875 1830 1830 5410
Z77CB3 890 890 1915 1915 5610
Z88DB3 930 930 1980 1980 5820
CU/CU
Z33BA3 980 980 1650 1650 5260
Z44BA3 1040 1040 1740 1740 5560
Z74BB3 1235 1235 1885 1885 6240
Z77CB3 1250 1250 1970 1970 6440
Z88DB3 1290 1290 2035 2035 6650
MODEL WEIGHT DISTRIBUTION (LBS.) OPERATING
YCA Isolator A B C D
CU/AL
Z33BA3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-1695 CIP-C-1695
VMC CP-2-25 CP-2-25 CP-2-28 CP-2-28
Z44BA3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-1695 CIP-C-1695
VMC CP-2-25 CP-2-25 CP-2-31 CP-2-31
Z74BB3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-2100 CIP-C-2100
VMC CP-2-26 CP-2-26 CP-2-31 CP-2-31
Z77CB3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-2100 CIP-C-2100
VMC CP-2-26 CP-2-26 CP-2-31 CP-2-31
Z88DB3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-2100 CIP-C-2100
VMC CP-2-26 CP-2-26 CP-2-31 CP-2-31
CU/CU
Z33BA3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-1695 CIP-C-1695
VMC CP-2-26 CP-2-26 CP-2-28 CP-2-28
Z44BA3 Mason Ind. CIP-C-1000 CIP-C-1000 CIP-C-1695 CIP-C-1695
VMC CP-2-26 CP-2-26 CP-2-31 CP-2-31
Z74BB3 Mason Ind. CIP-C-1350 CIP-C-1350 CIP-C-2100 CIP-C-2100
VMC CP-2-27 CP-2-27 CP-2-31 CP-2-31
Z77CB3 Mason Ind. CIP-C-1350 CIP-C-1350 CIP-C-2100 CIP-C-2100
VMC CP-2-27 CP-2-27 CP-2-31 CP-2-31
Z88DB3 Mason Ind. CIP -C-1350 CIP-C-1350 CIP-C-2100 CIP-C-2100
VMC CP-2-27 CP-2-27 CP-2-31 CP-2-31
LD01986
LD01987
LD01988
CIP RATED RATED SPRING SPRING
SIZE CAPACITY DEFL CONSTANT COLOR
(LBS.) (IN.) (LBS./IN.)
C-1000 1000 1.06 944 BLACK
C-1350 1350 1.00 1350 YELLOW
C-1750 1750 1.00 1750 BLACK1
C-2100 2100 1.00 2100 YELLOW1
C-2385 2385 1.00 2385 YELLOW2
C-2650 2650 1.00 2650 RED1
C-2935 2935 1.00 2935 RED2
NOTES:
1. With red spring inside
2. With green spring inside
CIP LW FREE & T MBD SBC SW HCW HCL E
SIZE OP. HT.
C 8-7/8 3-1/2 6-1/8 9/16 3/8 7-7/8 7/16 1-3/4 7-1/4 6-5/8

FORM 150.44-NM4
15
YORK INTERNATIONAL
CHILLED LIQUID PIPING
GENERAL  When the unit has been located in its fi-
nal position, the unit liquid piping may be connected.
Normal installation precautions should be observed in
order to receive maximum operating efficiencies. Pip-
ing should be kept free of all foreign matter. All liquid
cooler piping must comply in all respects with local
plumbing codes and ordinances.
Since elbows, tees and valves decrease pump capac-
ity, all piping should be kept as simple as possible.
Hand stop valve should be installed in all lines to facili-
tate servicing.
Piping to the inlet and outlet connections of the chiller
may include high-pressure rubber hose or piping loops
to insure against transmission of water pump vibration.
This is optional and the necessary components must
be obtained in the field.
Drain connections should be provided at all low points
to permit complete drainage of liquid cooler and piping
system.
A small valve or valves should be installed at the highest
point or points in the chilled liquid piping to allow any trapped
air to be purged. Vent and drain connections should be
extended beyond the insulation to make them accessible.
The piping to and from the cooler must be designed to
suit the individual installation. It is important that the
following considerations be observed:
1. The chilled liquid piping system should be laid out
so that the circulating pump discharges directly into
the cooler. The suction for this pump should be taken
from the piping system return line and not the cooler.
2. The inlet and outlet cooler liquid connection sizes
are given on page 9.
3. A strainer, preferably 40 mesh, MUST be installed
in the cooler inlet line just ahead of the cooler.
4. All chilled liquid piping should be thoroughly flushed
to free it from foreign material before the system is
placed into operation. Use care not to flush any for-
eign material into or through the cooler.
5. As an aid to servicing, thermometers and pressure
gauges should be installed in the inlet and outlet
water lines. One connection point (plugged) is pro-
vided in each cooler nozzle. Thermometers and
gauges are not furnished with the unit and are to be
furnished by other suppliers.
6. The chilled liquid lines that are exposed to outdoor
ambients should be wrapped with a supplemental
heater cable and insulated to protect against freeze-
up during low ambient periods, and to prevent forma-
tion of condensation on lines in warm humid cli-
mates.
7. A chilled water flow switch, (either by YORK or oth-
ers) MUST be installed in the leaving water piping
of the cooler. There should be a straight horizontal
run of at least 5 diameters on each side of the switch.
Adjust the flow switch paddle to the size of pipe in
which it is to be installed. (See manufacturers in-
structions furnished with switch). The switch is to
be wired to terminals in the control panel as shown
in the WIRING DIAGRAM.
WARNING: Flow switch must not be used to stop and
start chiller. It is intended only as a safety
switch.
COMPRESSOR INSULATION
In high humidity environments, compressor sweating
may be noted. In most applications, this is of no con-
cern. However, if it is undesirable, it is the responsibil-
ity of the installer to make provisions to field insulate
the compressor or install a factory insulation kit when
they become available. Contact your local YORK Sales
Office for availability.
ELECTRICAL WIRING
Liquid Chillers are shipped with all factory mounted
controls wired for operation.
Field Wiring  Power wiring must be provided through
a fused disconnect switch to the unit terminals (or op-
tional molded case disconnect switch) in accordance
with N.E.C. or local code requirements. Minimum cir-
cuit ampacity and maximum dual element fuse size are
given on pages 10 and 11. A 115-1-60/50, 20 amp
source must be supplied for the control panel through
a fused disconnect when a control panel transformer
(optional) is not provided. Refer to WIRING DIAGRAM.
Affiliated apparatus, such as a chilled water flow switch,
auxiliary contacts from the chilled water pump starter,
alarms, etc., should be interlocked into the control panel
circuit. These field modifications may be made as
shown on the WIRING DIAGRAM.
MULTIPLE UNITS
For increased compressor protection and to reduce
power inrush at start-up on multiple chiller installations,
provisions must be made to prevent simultaneous start-
up of two or more units. Also, some method must be
employed to automatically cycle one or more of the units
on or off to permit more efficient operation at part load
conditions. A sequencing kit may be acquired through
your local YORK representative.

YORK INTERNATIONAL
16
WIRING DIAGRAM
LD01989
LD01990
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 lo-
cation of relay contacts. An underlined 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 recommended). Wiring shall 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 (FLSW). See Note
3 for contact rating and wiring specifications.
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. Device must have a minimum contact rating of 100VA at
115 volts A.C.
6. Alarm contacts are for annunciating alarm/unit malfunction con-
tacts are rated at 115V, 100VA, resistive load only, and must be
suppressed at load by user.
7. See application guide when optional equipment is used.
8. Contactors 1M and 3M are supplied only on part winding start
units. Compressor terminals 1, 2, 3 are connected to terminals
7, 8, 9 in compressor terminal box on across the line start units
and wires 100 thnu 102 and 200 thnu 202 are not supplied.
9. Control panel to be securely connected to earth ground.
FIG. 5  ELEMENTARY DIAGRAM

FORM 150.44-NM4
17
YORK INTERNATIONAL
CAUTION: No Controls (relays, etc.)
should be mounted in the
Smart Panel enclosure or
connected to power sup-
plies 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 (re-
lays) wired in series with
the flow switch for start/
stop, into the alarm cir-
cuitry, or pilot relays for
pump starters wired
through motor contactor
auxiliary contacts must be
suppressed with YORK
P/N 031-00808 suppres-
sor across the relay/
contactor coil which acti-
vates the contacts.
Any contacts connected to
flow switch inputs or BAS
inputs on terminals 13-19
of TB3 or any other termi-
nals, must be suppressed
with a YORK P/N 031-
00808 suppressor across
the relay/contactor coil
which activates the con-
tacts.
CAUTION: Control wiring connected
to the control panel should
never be run in the same
conduit with power wiring.
CONTROL MIN MAX NON-FUSED
UNIT POWER CIRCUIT DUAL DISC. SW.
VOLTAGE SUPPLY AMPACITY ELEMENT SIZE
FUSE SIZE
All
Models w/o 115-1-50/60 20A 20A, 250V 30A, 240A
Transformers
CONTROL POWER SUPPLY
FIG. 5  ELEMENTARY DIAGRAM (Contd)
LD01991

YORK INTERNATIONAL
18
LD01992
LD01993
LD01994
FIG. 6  SYSTEM WIRING
CONNECTION DIAGRAM
SYSTEM WIRING
YCA 50 - 90

FORM 150.44-NM4
19
YORK INTERNATIONAL
FIG. 6  SYSTEM WIRING (Contd)

YORK INTERNATIONAL
20
CONNECTION DIAGRAM
BOX, ELEC.
YCA 50 - 90 (ARI) STANDARD AND REMOTE EVAPORATOR UNITS
LD01996
FIG. 7  CONNECTION DIAGRAM