YORK Millennium Air Cooled Screw Compressor machines are the state-of-the-art in air-cooled
chillers, providing chilled fluids for all air conditioning applications. Completely self-contained
and designed for outdoor installation, these chillers employ new, low noise, energy efficient,
serviceable, semi-hermetic screw compressors designed and manufactured specifically for
this new product line. These compressors, with reliable twin-screw technology, are ideally
matched to evaporators and condensers optimally configured for superior heat transfer and
unit efficiency. Condenser coils are arranged to maximize airflow using full airfoil, high efficiency, low noise fans driven by low energy motors. The screw compressors, high efficiency
evaporator, enhanced heat transfer condensers, and weather tight power and microprocessor
control centers are mounted on a bolted, fully galvanized and powder paint ed, all steel base,
for unsurpassed reliability and performance.
YORK INTERNATIONAL
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Page 4
Specifications
These YORK air cooled chillers are shipped as a complete factory package. Each unit is completely assembled with all interconnecting refrigerant piping and
internal wiring, ready for field installation:
COMPLETE FACTORY PACKAGE
• Each compressor is installed on its own independent refrigerant circuit, which is factory pressure
tested, evacuated, then fully charged with refrigerant and oil.
• After assembly , an operational test is performed with
water flowing through the cooler to ensure each circuit operates correctly .
• Cabinet and base frame are constructed of formed
heavy gauge, galvanized steel.
• All external structural parts are covered with architecturally neutral “Desert Sand” (Munsell #10YR6-
2) baked-on enamel powder paint. This provides a
finish which, when subjected to ASTM B117, 500
hour, 5% salt spray conditions, shows breakdown
of less than
lent to ASTM D1654 rating of “6”).
• Design is in accordance with applicable sections of
ASME Pressure Vessel Code, NFPA 70 (National
Electrical Code), U.L. and cU.L. Standards , and
ASHRAE/ANSI-15 Safety Code for Mechanical Refrigeration.
• Units are Rated and Certified in accordance with
ARI Standard 550/590-98.
• All exposed power wiring routed through liquid-tight,
non-metallic conduit.
SEMI-HERMETIC YORK SCREW COMPRESSORS
• An ideal synergy of expertise, sister division YORK
Refrigeration Compressor Engineers as integral
members on YORK Engineered Systems’ Chiller Design T eam, has resulted in a world class compressor
with unequaled performance.
• Continuous function, microprocessor controlled, 3way proportional Capacity Control Valve provides
regulated output pressure independent of valve input
pressure for a stable, smooth, and precise match of
compressor capacity to cooling load to 10% of chiller
capacity .
• Automatic spring return of capacity control valve to
minimum load position ensures compressor starting
at minimum motor load. Internal discharge check to
prevent rotor backspin upon shut-down.
• Acoustically tuned, internal discharge gas muffler
eliminates objectionable noise at the source, while
optimizing flow for maximum performance.
1
/8" either side of a scribed line (equiva-
• Reliable suction gas cooled, high efficiency, accessible hermetic motor with APT2000 type magnet wire
and redundant overload protection using both thermistor and current overload protection.
• Suction gas screen and serviceable, 0.5 micron full
flow oil filter within the compressor housing.
• Some models equipped with tuned port economizer
as appropriate for enhanced capacity and superior
efficiency.
• Cast iron compressor housing precisely machined for
optimal clearances and superb efficiency . Entire compressor, from suction to discharge has a Design
Working Pressure of 450 PSIG (31 bar).
• 350W compressor body cartridge heater.
CONDENSER SECTION
• Condenser Fans with low noise , full airfoil cross section for maximum efficiency, statically and dynamically balanced for low vibration operation, and positioned in extended, formed steel orifices for low sound
and maximum efficiency.
• Condenser fan motors are high efficiency , direct drive,
6-pole, 3-phase, Class-“F”, current overload protected, totally enclosed (TEAO) type with double
sealed, permanently lubricated, ball bearings.
• Fin and tube condenser coils of seamless, internally
enhanced, high condensing coefficient, corrosion resistant copper tubes arranged in staggered rows and
mechanically bonded to corrosion resistant aluminum
alloy fins with full height fin collars. Design working
pressure is 450 PSIG (31 bar).
EVAPORATOR
• High efficiency , direct-expansion type cooler with refrigerant in tubes and chilled liquid through the baffled
shell. Independent circuits provided for each compressor.
• Design working pressure of the shell waterside is
150 PSIG (10.3 bar), and 350 PSIG (24 bar) for the
refrigerant side. Constructed and tested in accordance with applicable sections of ASME Pressure
Vessel Code, Section VIII, Division (1). Water side
exempt per paragraph U-1, (c), (6). Other codes,
such as German TÜV , also available for global customers.
• Water baffles fabricated from galvanized steel to
resist corrosion. Removable heads allow access to
internally-enhanced, seamless, copper tubes. Water vent and drain connections included.
• Cooler equipped with thermostatically controlled
heater for protection to -20°F (-29°C) ambient, and
insulated with ¾" (19mm) flexible, closed-cell foam
(k = 0.25).
4
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Page 5
FORM 201.18-EG1
REFRIGERANT CIRCUIT
• Independent refrigerant circuits per compressor,
each using copper refrigerant pipe formed on computer controlled bending machines. This eliminates
over 60% of system piping brazed joints as compared to designs that use fittings, resulting in a highly
reliable and leak resistant system.
• Liquid line components include: manual shut-off
valve with charging port, high adsorption removable
core filter-drier, solenoid valve, sight glass with moisture-indicator, and reliable thermostatic expansion
valves.
• Economizer is a refrigerant to refrigerant, compact
plate-type heat exchanger to maximize chiller capacity and efficiency by subcooling liquid refrigerant
delivered to the cooler expansion valve. Constructed
of corrosion resistant stainless steel plates formed
to induce turbulent flow and enhance heat transfer,
then oven brazed and pressure tested for reliability.
Designed and constructed in accordance with ASME
and TÜV for 450 PSIG (31 bar). U.L./CSA listed.
• Suction and discharge lines provided with manual
compressor shutoff service valves. Suction line
equipped with closed-cell insulation.
• Oil separators with Design Working Pressure of 450
PSIG (31 bar) and U.L. listing are high efficiency,
augmented aerosol impingement type to maximize
oil extraction without fragile media to break down.An
oil charging valve is included with each refrigerant
circuit.
• Oil cooling provided by dedicated air cooled finned
tube type heat exchanger located in the condenser
section of the machine.
MICROPROCESSOR CONTROLS
• Controls housed in a powder painted steel cabinet
enclosure, equivalent to NEMA 3R/12 (IP55), with
hinged, latched, and gasket sealed, door.
• Liquid crystal 40 character display with text provided
on two lines and light emitting diode backlighting for
outdoor viewing.
• Color coded, 32 button, sealed keypad with sections
for Display, Entry, Setpoints, Clock, Print, Program
and Unit On/Off.
• Standard controls include: brine chilling or thermal
storage, automatic pump down, run signal contacts,
demand load limit from external building automation system input, remote liquid temperature reset
input, unit alarm contacts, evaporator pump control,
automatic reset after power failure, automatic system optimization to match operating conditions, software stored in non-volatile memory (EPROM) to
eliminate chiller failure due to AC power failure.
Programmed setpoints retained in lithium battery
backed RTC memory for a minimum 5 years.
• Display – In English (°F and PSIG) or Metric (°C
and Bars) units, and for each circuit:
♦ Return and leaving chilled liquid, and ambient tem-
perature.
♦ Day, date and time. Daily start/stop times. Holi-
day and Manual Override status.
♦ Compressor operating hours and starts. Auto-
matic or manual lead/lag. Lead compressor identification.
♦ Run permissive status. No cooling load condi-
tion. Compressor run status.
♦ Anti-recycle timer and anti-coincident start timer
status per compressor.
♦ Suction (and suction superheat), discharge, and
oil pressures and temperatures per System.
♦ Percent full load compressor motor current per
phase and average per phase. Compressor capacity control valve input steps.
♦ Cutout status and set-points for: supply fluid tem-
perature, low suction pressure, high discharge
pressure and temperature, high oil temperature,
low and high ambient, phase rotation safety, and
low leaving liquid temperature.
♦ Unloading limit set-points for high discharge pres-
sure and compressor motor current.
♦ Liquid pull-down rate sensitivity (0.5°F to 5°F/
minute in 0.1°F increments).
♦ Status of: evaporator heater, condenser fans, load
and unload timers, chilled water pump.
♦ “Out of range” message.
♦ Up to 6 fault shut down conditions.
♦ Standard Display Language is English, with
tions
for: French, German, Italian, and Spanish.
Op-
• Entry – Enter set point changes, cancel inputs, ad-
vance day , change AM/PM.
• Clock – Time, daily or holiday start/stop schedule,
manual override for servicing.
• Print – Operating data or system fault shutdown his-
tory for last six faults, and software version. Printouts through an RS-232 port via a separate printer
(by others).
• Program –
♦ Low leaving liquid temperature cutout, 300 to 600
second anti-recycle timer, lag compressor start
time delay, and average motor current unload
point. Liquid temperature setpoint reset signal
from YORKISN or building automation system
(by others) via:
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Specifications
(Continued)
Pulse width modulated (PWM) input for up to
40°F (22°C) total reset as standard.
Optional
input card for up to 40°F (22°C) reset using a:
4 to 20 milliamp, 0 to 10 VDC input, or discrete
reset input. [NOTE: The Standard MicroPanel
can be directly connected to a YORK ISN Building Automation System via the standard onboard RS485 communication port. This Option
also provides open system compatibility with
other communications networks (BACNET™ &
LONMARK™) via interface through standard
onboard 485 or 232 port and an external
YorkT alk Translator
♦ Additional functions (password protected) for pro-
gramming by a qualified service technician:
Cut-outs for low and high ambient, low suction
pressure, high discharge pressure, high oil temperature.
Refrigerant type.
High discharge pressure unload setpoint.
Fan control discharge pressure set point.
Fan ON/OFF pressure differential.
Compressor motor current percent limit.
Building Automation System interface
.]
♦ The Standard unit controls permit operation down
to 0°F (-18°C) outdoor ambient temperature.
POWER PANEL
• Power panel housed in NEMA 3R/12 (IP55) rain/
dust tight, powder painted steel cabinets with hinged,
latched, and gasket sealed outer doors equipped
with wind struts for safer servicing. Two motor control center cabinets are provided, with independent
doors and separated by a steel barrier panel.
• Current transformers sense each phase, as an input to the microprocessor, to protect compressor motors from damage due to: low input current, high input current, unbalanced current, single phasing,
phase reversal, and compressor locked rotor.
• Control circuit transformer provides 115V / 1 Ø power
to the unit control system. Includes factory primary
wiring from lockable disconnect on panel door separate from the motor control centers, and secondary
wiring supply to the 24V , fused Microprocessor panel
transformer.
• Individual fan motor contactors & external overloads
per condenser fan motor.
• Exposed compressor and fan motor power wiring
routed through liquid tight conduit.
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Accessories and Options
FORM 201.18-EG1
• CONTROL CIRCUIT TERMINAL STRIP – Provides
power input terminals for field provided power input
in lieu of factory mounted control circuit transformer.
115V, 1∅ Control Circuit Power Terminal Strip located in the Microprocessor Panel to accept a field
provided control power circuit with appropriate
branch circuit protection in accordance with applicable Local and National codes. Provides unit control circuit power, including supply to the 24V, fused
Microprocessor panel transformer.
• BUILDING AUTOMA TION SYSTEM (BAS) INTERFACE – Provides means to reset the leaving chilled
liquid temperature or percent full load amps (current limiting) from the BAS (Factory Mounted):
♦ Printed circuit board to accept 4 to 20 milliamp, 0
to 10 VDC, or dry contact closure input from the
BAS.
♦ A YORK ISN Building Automation System can pro-
vide a Pulse Width Modulated (PWM) signal direct to the standard control panel via the standard
on-board RS485 port.
• PRIMARY CHILLER POWER CONNECTIONS –
See Electrical Data on pages 78 through 89 for specific voltage and options availability. Separate external branch circuit protection and disconnecting
means must be supplied by others in accordance
with applicable Local and National codes. (Factory
Mounted)
â Multiple Point Supply –
wiring connection on all models is Multiple Point
Power Connection to factory provided Terminal
Blocks. Two field supplied electrical power circuits
with appropriate branch circuit protection provide
power to each of two motor control center cabinets, located adjacent to each other at one end of
the chiller. Each cabinet contains starter elements
for one or two compressors and their associated
fan motor starters.
Optional
connection are Non-Fused Disconnects with external lockable handles, or (on two compressor
machines only) Circuit Breakers with external lockable handles. Also
sor machines equipped with multiple point power
supply) are individual system circuit breakers per
each compressor with external lockable handles.
ã Single-Point Supply –
Point power connection configurations are SinglePoint Supply arrangements. A wide variety of these
single-point
customer connection requirement:
♦ Single-Point with Individual System Breakers
–These options consist of field connection to either a unit mounted Terminal Block, or a Non-
YORK INTERNATIONAL
to the Terminal Blocks for field power
Optional
Options
are offered to satisfy most any
Standard
(on 3 & 4 compres-
Optional
field power
to the Multiple
Fused Disconnect Switch with external, lockable
handle (in compliance with Article 440-14 of
N.E.C., to isolate unit power supply for service).
Factory wiring is provided from the T erminal Block
or Disconnect Switch to factory supplied Individual
System Circuit Breakers with external, lockable
handles in each of the two compressor motor control centers.
♦ Single-Point Supply – Also optional (on two com-
pressor machines only) are Single-Point Supply
configurations for field connection of a single electrical circuit to: Terminal Block, Non-Fused Disconnect Switch with lockable external handle (in
compliance with Article 440-14 of N.E.C., to isolate unit power supply for service), or Circuit
Breaker with lockable external handle. Factory
wiring is provided from the Terminal Block, Disconnect Switch, or Breaker directly to the starter
components in each of the two compressor motor
control centers.
• STAR (WYE)-DELTA COMPRESSOR MOTOR
STARTER – Provides smooth starting and approxi-
mately 65% reduced inrush current compared to
across-the-line type start. Two compressor units
equipped with any of the Single-Point Power connection options and Star-Delta starters must also
be equipped with Individual System Circuit Breakers option. Three and four compressor units with
Star-Delta starters must also include Individual System Circuit Breakers option. (Factory Mounted) See
Electrical Data (pages 79 - 89) for availability and
coordination with individual system short circuit protection.
• CONDENSER COIL PROTECTION – Standard con-
denser coil construction materials include aluminum
fins, copper tubes, and galvanized tube supports for
generally good corrosion resistance. However, these
materials are not adequate for all environments. The
system designer can take steps to inhibit coil corrosion in harsh applications and enhance equipment
life by choosing from these options based on project
design parameters and related environmental factors. For additional application recommendations
refer to Form 150.12-ES1. (Factory Mounted)
♦ Black Fin Condenser Coils – Condenser coils
constructed using black epoxy coated aluminum
fin stock for corrosion resistance comparable to
copper fin coils in typical seashore locations. Either this or phenolic (below) recommended for
units installed in coastal environments.
♦ Phenolic Coated Condenser Coils – Completed
condenser coil assemblies are covered with a
cured phenolic coating. Probably the best choice
for seashore or where salt spray may hit the fins,
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Accessories and Options
(Continued)
and other corrosive applications except: strong alkalies, oxidizers, and wet bromine, chlorine, and
fluorine in concentrations greater than 100 ppm.
♦ Copper Fin Condenser Coils – Coils constructed
with corrosion resistant copper fins. Not recommended in areas where units may be exposed to
acid rain.
• DX COOLER OPTIONS
♦ 300 PSIG (21 bar) Waterside Design Working
Pressure – The DX Cooler W aterside is designed
and constructed for 300 PSIG (21 bar) working
pressure. (Factory Mounted)
Chiller construction in accordance with Pressure
Safety Codes of many countries are available.
Cooler, oil separators, relief valves, safeties, or
other operating devices designed or selected as
required by the indicated Country . Common configurations include:
USA (ASME, ASHRAE-15),
Germany (TÜV), France (CODAP), Italy
(ISPESL), and Poland (UDT)
only on 50 Hz units. Consult with your YORK representative to ensure compliance with job requirements (Factory Mounted).
♦ Flange Accessory – Consists of raised face
flanges to convert grooved water nozzles to
flanged cooler connections. Includes companion
flanges. (Field mounted).
• REMOTE DX COOLER – Includes: â Main condens-
ing unit
chanical devices; ã Separate, insulated cooler; and
ä Field Accessory Kit (per refrigerant circuit: filterdrier shell and cores, liquid line solenoid valve, sight
glass with moisture indicator, and Thermostatic Expansion V alve; also entering and leaving water temperature transducers) for use in the interconnecting
system piping and wiring as designed and installed
by others. Field connections made at the condensing unit liquid stub (after the sub-cooler, or the economizer if the system is so equipped) and at the compressor suction stub. Condensing Unit ships with an
R-22 holding charge. System erection, leak testing,
refrigerant, and charging are by others. See Engineering Supplement 201.10-ES2 for additional information. Remote cooler configuration available with
R-22 only.
less
cooler, refrigerant, and liquid line me-
NOTE: Remote DX cooler applications
. Some available
are outside the scope of ARI Standard – 550/590.
• FLOW SWITCH ACCESSORY – V apor-proof SPDT ,
NEMA 4X switch, 150 PSIG (10.3 bar) DWP, -20°F
to 250°F (-29°C to 121°C), with 1" NPT (IPS) con-
nection for upright mounting in horizontal pipe. (This
flow switch or equivalent must be furnished with each
unit). (Field mounted)
• VIBRATION ISOLATION
♦ Neoprene Isolation – Recommended for normal
installations. Provides very good performance in
most applications for the least cost. (Field
mounted)
♦ 1" Spring Isolators – Level adjustable, spring and
cage type isolators for mounting under the unit
base rails. 1" nominal deflection may vary slightly
by application. (Field mounted)
♦ 2" Seismic Spring Isolators – Restrained Spring-
Flex Mountings incorporate a rugged welded steel
housing with vertical and horizontal limit stops.
Housings designed to withstand a minimum 1.0g
accelerated force in all directions to 2". Level adjustable, deflection may vary slightly by application. (Field mounted)
• ALTERNATIVE CHILLED FLUID APPLICATIONS
Standard
55°F (4°C to 13°C) Leaving Chilled Water Temperature. T o protect against nuisance safety trips below
40°F (4°C) and reduce the possibility of cooler damage due to freezing during chiller operation, the unit
Micro-Processor will automatically unload the compressors at abnormally low suction temperature
(pressure) conditions, prior to a safety shut down.
♦ Process Brine Option – Process or other appli-
cations requiring chilled fluid below 40°F (4°C) risk
water freezing in the evaporator, which is typically
overcome with antifreeze. For these applications,
the chiller performance rating incorporates ‘brine’
(typically ethylene or propylene glycol solution),
and the system design Leaving Chilled Fluid T emperature must be provided on the order form to
ensure proper factory configuration.
♦ Thermal Storage Option – Thermal Storage re-
quires special capabilities from a chiller, including
the ability to ‘charge’ an ice storage tank, then possibly automatically reset for operation at elevated
Leaving Chilled Fluid Temperatures as required
by automatic building controls. The Thermal Storage Option provides Ice Storage duty Leaving
Chilled Fluid setpoints to 15°F minimum (-10°C
minimum) during charge cycle, with a Reset range
to normal supply fluid temperature.
•REMOTE CONTROL PANEL AND WALLADAPTER – See Form 201.00-SG11 for more
information.
water chilling application range is 40°F to
(Only one of the following options can
be offered on a unit at one time: BAS, Remote
Control Panel or Multi-Unit Sequence Control).
(Factory mounted).
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Page 9
FORM 201.18-EG1
•MULTI-UNIT SEQUENCING – A separate Se-
quencing Control Center is provided to handle sequencing control of up to eight chillers in parallel
based on mixed liquid temperature (interconnecting wiring by others).
See Form 150.00-SG2 for
more information. (Only one of the following options can be offered on a unit at a time: BAS, Remote Control Panel or Multi-unit Sequence Control). (Factory mounted).
black polyvinylchloride coated, heavy gauge,
welded wire mesh guards mounted on the exterior of the unit. Protects condenser coil faces and
prevents unauthorized access to refrigerant components (compressors, pipes, cooler, etc.), yet provides free air flow. This can cut installation cost by
eliminating the need for separate, expensive fencing. (Factory mounted)
♦ Louvered Panel Enclosure (Full Unit) – Heavy
gauge louver panels, galvanized and painted just
as the main unit cabinet, provide liberal free air
flow area. Cover coils and around the bottom of
the unit to protect condenser coils, visually screen
mechanical elements, and prevent unauthorized
access to refrigerant components. (Factory
mounted)
♦ Louvered Panels (Condenser Coil Only) – Lou-
vered panels are mounted over the exterior condenser coil faces on the sides of the unit to visually screen and protect coils. (Factory mounted.)
♦ Louvered (Condensers) / Wire (Mechanicals) –
Louvered panels mounted over the exterior condenser coil faces, and heavy gauge welded wire
mesh guards mounted around the bottom of the
unit. Visually screens and protects coils, and prevents unauthorized access to refrigerant components. (Factory mounted.)
• HIGH ST ATIC FANS –
Fans and motors suitable for High External Static
conditions to 0.4 inches of water (100Pa). Since
these require higher power motors and therefore
slightly reduce chiller efficiency, select only if the
installation conditions will impose additional air flow
resistance resulting from such things as field
installed:ducts, filters, sound enclosures, or similar
obstructions to airflow. Contact the factory for performance or electrical implications.
• SOUND REDUCTION OPTIONS –
One or both options may be employed by the system designer as normally generated machine noise
is considered in the overall project design. See Form
201.18-ES1 for additional information.
♦ Low Speed Fans – With this option, the basic
chiller is equipped with 8-pole condenser fan motors in lieu of the standard 6-pole motors, plus
special fans matched to these optional slower motors to retain appropriate airflow. The net result is
reduced fan generated noise with no adverse effect on the chiller capacity or efficiency performance.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
2. EER= Chiller EER (includes power from compressors, fans, and control panels 0.8 KW)
3. LCWT = Leaving Chilled Water Temperature
4. Ratings based on 2.4 GPM cooler water per ton
5. Rated in accordance with ARI Standard 550/590-98
6. Certified in accordance with the ARI Water-Chilling Packages Using the Vapor Compression Cycle Certification Program,
which is based on ARI Standard 550/590.
Fan Motor, HP / kW2 / 1.82 / 1.83 / 2.73 / 2.72 / 1.82 / 1.82 / 1.82 / 1.82 / 1.8
Fan & Motor RPM114011401140114011401140114011401140
Fan Diameter, inches35.435.435.435.435.435.435.435.435.4
Fan Tip Speed, feet/min.10,57510,57510,57510,57510,57510,57510,57510,57510,575
Total Chiller Airflow, CFM79,80079,80093,00093,000114,400114,400114,400114,400114,400
Low Noise Fans
Fan Motor, HP / kW2 / 1.52 / 1.53 / 2.73 / 2.72 / 1.532 / 1.532 / 1.532 / 1.532 / 1.53
Fan & Motor Speed, RPM83883883 88 388 408408 4084084 0
Fan Diameter, inches35.435.435.435.435.435.435.435.435.4
Fan Tip Speed, feet/min.7,7747,7747,7747,7747,7927,7927,79 27,7927,792
Total Chiller Airflow, cfm79,80079,80093,00093,000112,400112,400112,400112,400112,400
High Static Fans
Fan Motor, HP / kW5 / 3.85 / 3.85 / 5.45 / 5.45 / 3.795 / 3.795 / 3.795 / 3.795 / 3.79
Fan & Motor RPM114011401140114011401140114011401140
Fan Diameter, inches35.435.435.435.435.435.435.435.435.4
Fan Tip Speed, feet/min.10,57510,57510,57510,57510,57510,57510,57510,57510,575
Total Chiller Airflow, CFM (@0.4" additional static)79,80079,80093,00093,000114,400114,400114,400114,400114,400
Evaporator, Direct Expansion
Water Volume, gallons515151515151797 97 9
Maximum1 Water Side Pressure, PSIG15015015015 01 5015015 0150150
Maximum Refrigerant Side Pressure, PSIG3503503503503 5035035 0350350
Minimum Chilled Water Flow Rate, GPM113122127133.8147170182188203
Maximum Chilled Water Flow Rate, GPM6006006 00600600600747747747
Water Connections, inches888888888
Unit Capacity at ARI Conditions, Tons171.6186.7194.8209.1243.3264.5287.7314.1352.2386.3419.1
Number of Independent Refrig. Circuits22223333444
Refrig. Charge, R-22, Ckt.-1 / Ckt.-2, lbs.190/190 220/220 220/220 220/220 154/154154/154187/187 203/203187/187 212/212229/229
Aluminum Fin Coils, lbs.10,80511,84911,97012,08115,02215,19016,57016,74821,16422,47622,926
Copper Fin Coils, lbs.12,07113,44113,55213,66316,92217,09018,78518,96423,69525,32225,772
Operating Weight:
Aluminum Fin Coils, lbs.11,46912,51312,63412,74517,33417,53118,89619,25124,19125,56426,049
Copper Fin Coils, lbs.12,73514,10514,21614,32719,23519,43121,11121,46626,72228,41128,896
Compressors, DXS Semihermetic Twin Screw
Quantity per Chiller22223333444
Nominal Ton Size, Ckt.-1 / Ckt.-285/8595/95105/95105/10578/7878/78 95/95 105/10595/9595/95105/105
Refrigerant Economizer, Ckt.-1 / Ckt.-2Yes / Yes No / No Yes / No Yes / Yes No / NoNo / NoNo / No Yes / YesNo / NoNo / NoYes / Yes
Condensers, High Efficiency Fin / Tube with Integral Subcooler
Total Chiller Coil Face Area, ft
Number of Rows33333333333
Fins per Inch1313131 31 313131 3131 313
Fan Motor, HP / kW2 / 1.82 / 1.83 / 2.73 / 2.72 / 1.82 / 1.82 / 1.82 / 1.82 / 1.8
Fan & Motor Speed, rev./sec.19.019.019.019.019.019.019.019.019.0
Fan Diameter, mm 9009009009 009 0090090 0900900
Fan Tip Speed, m/sec.545454544040404040
Total Chiller Airflow, l/sec. 37,66037,66043,88943,88953,98953,98953,98953,98953,989
Low Noise Fans
Fan Motor, HP / kW2 / 1.52 / 1.53 / 2.73 / 2.72 / 1.532 / 1.532 / 1.532 / 1.532 / 1.53
Fan & Motor Speed, rev./sec.141414141414141 41 4
Fan Diameter, mm9009 009009009 0090090 0900900
Fan Tip Speed, m/sec.404040404040404040
Total Chiller Airflow, l/sec.37,66037,66043,88943,88953,04553,04553,04553,04553,045
High Static Fans
Fan Motor, HP / kW5 / 3.85 / 3.85 / 5.45 / 5.45 / 3.795 / 3.795 / 3.795 / 3.795 / 3.79
Fan & Motor Speed, rev./sec.19.019.019.019.019.019.019.019.019.0
Fan Diameter, mm9009 009009009 0090090 0900900
Fan Tip Speed, m/sec.545454545454545454
Total Chiller Airflow, l/sec. (@0.4" additional static)37,66037,66043,88943,88953,98953,98953,98953,98953,989
Evaporator, Direct Expansion
Water Volume, liters193193193193193193301301301
Maximum1 Water Side Pressure, Bar10101010101 0101010
Maximum Refrigerant Side Pressure, Bar242424242424242424
Minimum Chilled Water Flow Rate, l/sec.7.17.78.08.49. 310.711.511.912. 8
Maximum Chilled Water Flow Rate, l/sec.37.937.937.937.937.937.947.147.147.1
Water Connections, inches888888888
Fan Motor, HP / kW2 / 1.82 / 1.82 / 1.82 / 1.82 / 1.82 / 1.82 / 1.82 / 1.82 / 1.82 / 1.82 / 1.8
Fan & Motor speed, rev./sec.19.019.019.019.019.019.019.019.019.019.019.0
Fan Diameter, mm9009009 009 0090 090 090 090 090 090 0900
Fan Tip Speed, m/sec.545454545 454545 4545 45 4
Total Chiller Airflow, l/sec.53,98967,48667,48667,48680,98380,98394,48194,481107,978 121,475121,475
Low Noise Fans
Fan Motor, HP / kW2 / 1.532 / 1.532 / 1.532 / 1.532 / 1.532 / 1.532 / 1.53 2 / 1.532 / 1.532 / 1.532 / 1.53
Fan & Motor Speed, rev./sec.141 41 41414141414141414
Fan Diameter, mm9009009 009 0090 090 090 090 090 090 0900
Fan Tip Speed, m/sec.404040404 040404 0404 04 0
Total Chiller Airflow, l/sec.53,04566,30766,30766,30779,56879,56892,82992,829106,091 119,352119,352
High Static Fans
Fan Motor, HP / kW5 / 3.795 / 3.795 / 3.795 / 3.795 / 3.795 / 3.795 / 3.79 5 / 3.795 / 3.795 / 3.795 / 3.79
Fan & Motor Speed, rev./sec.19 .019.019.019.019.019.019.019.019.019.019.0
Fan Diameter, mm9009009 009 0090 090 090 090 090 090 0900
Fan Tip Speed, m/sec.545454545 454545 4545 45 4
Total Chiller Airflow, l/sec. (@0.4" additional static)53,98967,48667,48667,48680,98380,98394,48194,481107,978 121,475121,475
Evaporator, Direct Expansion
Water Volume, liters30130130 130 152 45 244 254 25611679679
Maximum1 Water Side Pressure, Bar10101 01010101010101010
Maximum Refrigerant Side Pressure, Bar24242 42420.720.720.720.720.720.720.7
Minimum Chilled Water Flow Rate, l/sec.13 .814.415.517.214141616192121
Maximum Chilled Water Flow Rate, l/sec.47.147.147.147.15050505 0676767
Water Connections, inches88881 0101010101010
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
40
YORK INTERNATIONAL
Page 41
FORM 201.18-EG1
5/8" DIA.
MOUNTING
HOLES (TYP.)
3"
1 1/4"
25 1/2"
POWER ELEMENTS
FOR SYS. 1
88"
CONTROL/OPTIONS PANEL
31"
POWER ELEMENTS
25 1/2"
FOR SYS. 2
POWERPOWER
23 7/8"
ORIGIN
Y
C
G
X
CENTER OF GRA VITY (Alum.)
YCASXYZ
009072.9"41.6" 35.5"
010073.0"41.5" 35.2"
AB
D
E
45 1/2"45 1/2"
VIEW D-D
CENTER OF GRAVITY (Copper)
YCASXYZ
009073.7"41.9"38.4"
010073.8"41.7" 30.01"
C
F
1 1/4"
LD04625
69 3/4"
23"
25"
27 7/8"
15 3/4"
A
DD
96"
SYS.#2SYS.#1
83"
106 1/2"
138 3/4"
8"8"
(2) 2 1/4" DIA.
RIGGING HOLES
(EACH SIDE)
LD05211
A
Z
C
G
WATER OUTLETWATER INLET
147 7/8"
X
YORK INTERNATIONAL
41
Page 42
Dimensions –
83
229
178
127
YCAS0090 – 0100EC (SI)
3 SPA. @ 127
89
127
57
229
25 TYP.
51
432
POWER ENTRY
(8) 38,51,64 CONDUIT K.O.'S
44
CONTROL ENTRY
(7) 13 CONDUIT K.O.'S
BB
432
25 TYP.
CC
51
25
CONTROL ENTRY
(8) 22 DIA. HOLES
VIEW C-CVIEW B-B
MICRO-COMPUTER
CONTROL CENTER
OPTIONS PANEL
438
49 (EDGE OF
43
POWER: MULTIPLE POINT WITH TERMINAL BLOCKS
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
2235
2321
VIEW A-A
42
UNIT TO COOLER
CONNECTION)
LD05210
YORK INTERNATIONAL
Page 43
76
FORM 201.18-EG1
16 DIA.
MOUNTING
HOLES (TYP.)
32
648
2235
787
648
606
ORIGIN
POWER ELEMENTS
FOR SYS. 1
CONTROL/OPTIONS PANEL
POWER ELEMENTS
FOR SYS. 2
POWERPOWER
Y
C
X
G
CENTER OF GRA VITY (Alum.)
YCASXYZ
0090 1852.3 1057.4 902.0
0100 1855.4 1053.5 895.0
A
APPROX. OPERATING WEIGHT
DISTRIBUTION
D
VIEW D-D
CENTER OF GRAVITY (Copper)
YCASXYZ
0090 1872.9 1063.3 974.7
0100 1875.4 1059.8 967.4
CB
(KG)
FE
32
11561156
LD05212
1772
584
635
400
A
A
708
DD
2438
SYS.#2SYS.#1
8"8"
WATER OUTLETWATER INLET
(2) 57 DIA.
2108
2705
RIGGING HOLES
(EACH SIDE)
3524
3755
Z
LD05213
YORK INTERNATIONAL
C
G
X
43
Page 44
Dimensions –
3 1/4"
9"
7"
5"
YCAS0110 – 0120EC (English)
3 SPA. @ 5"
3 1/2"
5"
2 1/4"
9"
1" TYP.
2"
17"
POWER ENTRY
(8) 1 1/2",2",2 1/2" CONDUIT K.O.'S
B
1 3/4"
17"
1" TYP.
CONTROL ENTRY
(7) 1/2" CONDUIT K.O.'S
C
C
2"
1"
CONTROL ENTRY
(8) 7/8" DIA. HOLES
VIEW C-CVIEW B-B
LD04473
MICRO-COMPUTER
CONTROL CENTER
OPTIONS PANEL
B
17 1/4"
CONTROL
TRANSFORMER
SERVICE SWITCH
1 15/16" (EDGE OF
1 11/16"
88"
91 3/8"
LD04474
UNIT TO COOLER
CONNECTION)
VIEW A-A
POWER: MULTIPLE POINT WITH TERMINAL BLOCKS
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
44
YORK INTERNATIONAL
Page 45
FORM 201.18-EG1
5/8" DIA.
MOUNTING
HOLES (TYP.)
3"
1 1/4"
88"
25 1/2"
31"
25 1/2"
19 9/16"
ORIGIN
POWER ELEMENTS
FOR SYS. 1
CONTROL/OPTIONS PANEL
POWER ELEMENTS
FOR SYS. 2
POWERPOWER
Y
C
G
CENTER OF GRA VITY (Alum.)
YCASXYZ
011081.0"43.2"36.2"
012081.1"43.1" 36.1"
AB
D
E
54 3/8"55 13/16"
VIEW D-D
X
CENTER OF GRAVITY (Copper)
YCASXYZ
011082.7"43.3"39.1"
012082.8"43.2"38.9"
C
F
1 1/4"
LD04475
69 3/4"
23"
25"
A
A
24 15/16"
D
D
96"
SYS.#2SYS.#1
8"8"
WATER OUTLETWATER INLET
42 3/16"
83"
(2) 2 1/4" DIA. RIGGING
HOLES (EACH SIDE)
98 11/16"
164 15/16"
174 1/16"
LD05209
Z
YORK INTERNATIONAL
C
G
X
45
Page 46
Dimensions –
83
229
178
127
YCAS0110 – 0120EC (SI)
3 SPA. @ 127
89
127
57
229
25 TYP.
51
432
POWER ENTRY
(8) 38,51,64 CONDUIT K.O.'S
44
CONTROL ENTRY
(7) 13 CONDUIT K.O.'S
C
B
25 TYP.
432
51
25
CONTROL ENTRY
(8) 22 DIA. HOLES
VIEW C-CVIEW B-B
MICRO-COMPUTER
CONTROL CENTER
C
OPTIONS PANEL
B
438
49 (EDGE OF
43
POWER: MULTIPLE POINT WITH TERMINAL BLOCKS
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
2235
2321
VIEW A-A
46
UNIT TO COOLER
CONNECTION)
LD05208
YORK INTERNATIONAL
Page 47
76
FORM 201.18-EG1
16 DIA.
MOUNTING
HOLES (TYP.)
32
2235
648
787
648
497
ORIGIN
POWERPOWER
C
G
A
POWER ELEMENTS
FOR SYS. 1
CONTROL/OPTIONS PANEL
POWER ELEMENTS
FOR SYS. 2
D
Y
X
CENTER OF GRA VITY (Alum.)
YCASXYZ
0110 1811.4 1093.5 877.2
0120 1814.1 1091.4 874.0
APPROX. OPERATING WEIGHT
DISTRIBUTION
VIEW D-D
(KG)
13801418
CENTER OF GRAVITY (Copper)
YCASXYZ
0110 1834.7 1095.7 948.5
0120 1837.0 1093.8 945.1
CB
FE
32
LD05214
1772
584
635
A
A
633
D
D
2438
SYS.#2SYS.#1
8"8"
WATER OUTLETWATER INLET
21081072
(2) 57 DIA. RIGGING
HOLES (EACH SIDE)
2506
4189
4421
Z
LD05215
C
G
X
YORK INTERNATIONAL
47
Page 48
Dimensions –
YCAS0130 - 0180 (English)
7"
CONTROL ENTRY
(12) 1/2"
CONDUIT K.O.'S
CONTROL
28"
2" TYP.
9"
2"
12"
4 3/4"
RECOMMENDED
OPENING
(9" HIGH)
2"
31 1/2"
POWER
OPENING
(21" HIGH)
42"
VIEW B-B
7 1/2"
LD03742a
VIEW C-C
SYS. #1
COILS
SYS. #2
COILS
B
MICRO-COMPUTER
CONTROL CENTER
OPTIONS PANEL
B
C
P
ALTERNATIVE
POWER OPENING
(7" WIDE X 21" HIGH)
DO NOT USE unless
2-compressor unit with
multiple point power
CONTROL
TRANSFORMER
SERVICE SWITCH
91 3/8"
LD03742
C
1 13/16" (EDGE OF
UNIT TO COOLER
CONNECTION)
VIEW A-A
MODELSMODELS
DIMENSION130 - 140150 - 180
P17-1/4"18"
Q83"107"
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
C
4-7/16" (EGDE OF
UNIT TO COOLER
CONNECTION)
LD03964a
56
YORK INTERNATIONAL
Page 57
FORM 201.18-EG1
A
G
B
H
C
I
D
J
E
K
F
L
5/8" DIA.
MOUNTING
HOLES (TYP.)
POWER ELEMENTS
FOR SYS. #1 & #3
CONTROL PANEL
POWER ELEMENTS
FOR SYS. #2
31-3/4"
57-3/16"
57-3/16"
57-3/16"
48-3/8"55-1/8"
1-1/4"
1-1/4"
Y
X
ORIGIN
88"
30"
30"
POWER PANEL
TOP VIEW
A
36"
78"
7-1/2"
A
2"
POWER OPENING
(BOTH SIDES)
Z
X
CENTER OF GRA VITY (Alum.)
YCASXYZ
0250141.6"41.6" 33.8"
0270140.6"41.7" 33.7"
SYS. #1 & #2
2-1/4" DIA. RIGGING
HOLES (EACH SIDE)
68"
89-11/16"
CENTER OF GRAVITY (Copper)
YCASXYZ
SYS. #3
10"
WATER INLET
342-1/4"
SIDE VIEW
0250145.4"41.9" 40.5"
0270144.5"42.0" 40.3"
10"
63-9/16"
WATER OUTLET
104"
67-7/16"
LD03965
96"
LD03966
YORK INTERNATIONAL
57
Page 58
Dimensions –
All dimensions are in
mm unless otherwise
noted.
YCAS0250 - 0270 (SI)
178
CONTROL ENTRY
(12) 22
CONDUIT K.O.'S
229
711
51 TYP.
VIEW B-B
120
51
CONTROL
OPENING
(229 HIGH)
305
POWER
OPENING
(533 HIGH)
51
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
B
BOPTIONS PANEL
C
1067
800
191
LD03968
511
CONTROL
TRANSFORMER
SERVICE SWITCH
2331
VIEW A-A
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
LD03967
C
112 (EDGE OF
UNIT TO COOLER
CONNECTION)
58
YORK INTERNATIONAL
Page 59
FORM 201.18-EG1
A
1981
A
191
914
50
Z
X
172722771713
1614
8694
3708
2642
SYS. #1 & #2
SYS. #3
SIDE VIEW
POWER OPENING
(BOTH SIDES)
(4) 57 DIA. RIGGING
HOLES (EACH SIDE)
10"
WATER INLET
10"
WATER OUTLET
2438
16 DIA.
MOUNTING
HOLES (TYP.)
A
B
CD
E
F
GH
I
J
K
L
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2
CONTROL PANEL
762
762
2235
ORIGIN
806
1453
1453
1453
1229
1400
32
32
POWER PANEL
TOP VIEW
LD03969
YORK INTERNATIONAL
CENTER OF GRAVITY (Alum.)
YCASXYZ
025035971057860
027035721060855
CENTER OF GRAVITY (Copper)
YCASXYZ
0250369310631030
0270367010661023
LD03970
59
Page 60
Dimensions –
YCAS0300 - 0330 (English)
7"
CONTROL ENTRY
(12) 1/2"
CONDUIT K.O.'S
9"
28"
VIEW B-B
2" TYP.
4 3/4"
CONTROL
OPENING
2"
12"
(9" HIGH)
2"
31 1/2"
POWER
OPENING
(21" HIGH)
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
B
B
OPTIONS PANEL
C
7 1/2"
42"
LD03980
20-1/8"
CONTROL
TRANSFORMER
SERVICE SWITCH
91-13/16"
VIEW A-A
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
LD03979
C
4-7/16" (EDGE OF
UNIT TO COOLER
CONNECTION)
60
YORK INTERNATIONAL
Page 61
30"
88"
30"
ORIGINY
5/8" DIA.
MOUNTING
HOLES (TYP.)
ADFEC
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2
POWER PANEL
CONTROL PANEL
G
31-3/4"
X
57-3/16"
B
HJLKI
57-3/16"
57-3/16"
TOP VIEW
FORM 201.18-EG1
1-1/4"
1-1/4"
95-3/16"56-5/16"
LD03981
A
78"
7-1/2"
A
36"
2"
POWER OPENING
(BOTH SIDES)
Z
X
CENTER OF GRA VITY (Alum.)
YCASXYZ
0300154.0"41.6" 34.8"
0330151.3"41.7" 34.5"
SYS. #1 & #2
(4) 2-1/4" DIA. RIGGING
HOLES (EACH SIDE)
68"
89-11/16"
SYS. #3
CENTER OF GRAVITY (Copper)
YCASXYZ
0300159.2"41.9" 41.8"
0330156.8"41.9" 41.4"
10"
WATER INLET
115-7/16"
390-1/4"
SIDE VIEW
96"
10"
WATER OUTLET
104"146"
63-9/16"
LD03982
YORK INTERNATIONAL
61
Page 62
Dimensions –
All dimensions are in mm
unless otherwise noted.
YCAS0300 - 0330 (SI)
178
CONTROL ENTRY
(12) 22
CONDUIT K.O.'S
229
711
51 TYP.
VIEW B-B
120
51
CONTROL
OPENING
(229 HIGH)
305
POWER
OPENING
(533 HIGH)
51
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
OPTIONS PANEL
B
B
C
1067
800
191
LD03984
511
CONTROL
TRANSFORMER
SERVICE SWITCH
2331
VIEW A-A
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
LD03983
C
112 (EDGE OF
UNIT TO COOLER
CONNECTION)
62
YORK INTERNATIONAL
Page 63
16 DIA.
MOUNTING
HOLES (TYP.)
FORM 201.18-EG1
32
2235
762
762
ORIGIN
AFBDCE
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2
POWER PANEL
CONTROL PANEL
GLHJIK
8061453
Y
X
1453
POWER PANEL
TOP VIEW
CENTER OF GRA VITY (Alum.)
YCASXYZ
0300 39111057883
0330 38421058876
1453
1431
CENTER OF GRAVITY (Copper)
YCASXYZ
0300404510641061
0330398210651051
32
2417
LD03985
1981
A
A
914
191
50
POWER OPENING
(BOTH SIDES)
Z
X
SYS. #1 & #2
1727
(4) 57 DIA. RIGGING
HOLES (EACH SIDE)
3708
2277
SYS. #3
10"
WATER INLET
9913
SIDE VIEW
2642
2932
2438
10"
WATER OUTLET
1614
LD03986
YORK INTERNATIONAL
63
Page 64
Dimensions –
28"
YCAS0360 (English)
2"
CONTROL
OPENING
(9" HIGH)
7"
42"
CONTROL ENTRY
(12) 1/2"
CONDUIT K.O.'S
12"
4 3/4"
9"
2" TYP.
POWER
OPENING
(21" HIGH)
2"
31 1/2"
VIEW B-B
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
B
B
OPTIONS PANEL
C
21-3/8"
7 1/2"
LD03996
CONTROL
TRANSFORMER
SERVICE SWITCH
91-13/16"
VIEW A-A
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
64
C
25-5/8" (EDGE OF
UNIT TO COOLER
CONNECTION)
LD03995
YORK INTERNATIONAL
Page 65
FORM 201.18-EG1
AHDBCEFG
IPLJKMNO
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2 & #4
CONTROL PANEL
5/8" DIA.
MOUNTING
HOLES (TYP.)
31-3/4"
57-3/16"
57-3/16"57-3/16"
36-5/16"
56"56"
56"
1-1/4"
1-1/4"
Y
X
30"
30"
88"
ORIGIN
TOP VIEW
POWER PANEL
LD03997
A
78"
7-1/2"
A
36"
2"
POWER OPENING
(BOTH SIDES)
Z
X
SYS. #1 & #2
68"
CENTER OF GRAVITY (Alum.)
YCASXYZ
0360197.3"44.0" 33.2"
SYS. #3 & #4
(4) 2-1/4" DIA. RIGGING
HOLES (EACH SIDE)
262-3/4"
89-11/16"
67-7/16"
CENTER OF GRAVITY (Copper)
YCASXYZ
0360200.7"44.0" 39.6"
10"
WATER INLET
104"
111-9/16"
438-1/4"
SIDE VIEW
96"
10"
WATER OUTLET
LD03998
YORK INTERNATIONAL
65
Page 66
Dimensions –
All dimensions are in mm
unless otherwise noted.
YCAS0360 (SI)
178
CONTROL ENTRY
(12) 22
CONDUIT K.O.'S
229
711
51 TYP.
VIEW B-B
120
51
B
305
CONTROL
OPENING
(229 HIGH)
51
POWER
OPENING
(533 HIGH)
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
B
OPTIONS PANEL
C
1067
800
191
LD04000
543
CONTROL
TRANSFORMER
SERVICE SWITCH
2331
VIEW A-A
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
LD03999
C
651 (EDGE OF
UNIT TO COOLER
CONNECTION)
66
YORK INTERNATIONAL
Page 67
2235
ORIGIN
762
762
A
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2 & #4
POWER PANEL
CONTROL PANEL
I
806
Y
X
16 DIA.
MOUNTING
HOLES (TYP.)
1453
B
J
C
K
D
L
145314539231422
TOP VIEW
FORM 201.18-EG1
32
E
M
F
N
G
O
H
P
32
14221422
LD04001
1981
A
A
914
191
50
POWER OPENING
(BOTH SIDES)
Z
X
1727
CENTER OF GRA VITY (Alum.)
YCASXYZ
036050111117844
(4) 57 DIA. RIGGING
HOLES (EACH SIDE)
6673
2277
CENTER OF GRAVITY (Copper)
YCASXYZ
0360509711171005
10"
WATER INLET
28331713
11132
SIDE VIEW
2642
10"
WATER OUTLET
2438
LD04002
YORK INTERNATIONAL
67
Page 68
Dimensions –
YCAS0400 - 0440 (English)
7"
CONTROL ENTRY
(12) 1/2"
CONDUIT K.O.'S
CONTROL
28"
2" TYP.
9"
2"
12"
4 3/4"
VIEW B-B
OPENING
(9" HIGH)
2"
31 1/2"
POWER
OPENING
(21" HIGH)
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
B
B
OPTIONS PANEL
C
42"
7 1/2"
LD04004
21-3/8"
CONTROL
POWER OPENING
(7" WIDE x
21" HIGH)
DO NOT USE unless
2-compressor unit with
multiple point power
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high
pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 6'; rear to wall - 6'; control
panel end to wall - 4'; top - no obstructions allowed; distance between adjacent units - 10'. No more than one adjacent wall may be higher
than the unit.
TRANSFORMER
SERVICE SWITCH
91-13/16"
VIEW A-A
LD04003
C
25-5/8" (EDGE OF
UNIT TO COOLER
CONNECTION)
68
YORK INTERNATIONAL
Page 69
30"
88"
30"
ORIGIN
A
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2 & #4
POWER PANEL
CONTROL PANEL
I
31-3/4"
Y
X
5/8" DIA.
MOUNTING
HOLES (TYP.)
B
J
57-3/16"84-5/16"
C
K
D
L
57-3/16"57-3/16"
TOP VIEW
FORM 201.18-EG1
1-1/4"
E
M
F
N
G
O
H
P
1-1/4"
56"
56"56"
LD04005
A
36"
78"
7-1/2"
A
2"
POWER OPENING
(BOTH SIDES)
Z
X
CENTER OF GRA VITY (Alum.)
YCASXYZ
0400218.7"44.0" 34.1"
0440214.9"44.0" 33.9"
SYS. #1 & #2
(4) 2-1/4" DIA. RIGGING
HOLES (EACH SIDE)
68"89-11/16"
310-3/4"
SYS. #3 & #4
115-7/16"
SIDE VIEW
CENTER OF GRAVITY (Copper)
YCASXYZ
0400222.5"44.0" 40.8"
0440219.0"44.0" 40.5"
10"
WATER INLET
111-9/16"
486-1/4"
104"
96"
10"
WATER OUTLET
LD04006
YORK INTERNATIONAL
69
Page 70
Dimensions –
All dimensions are in mm
unless otherwise noted.
YCAS0400 - 0440 (SI)
178
CONTROL ENTRY
(12) 13
CONDUIT K.O.'S
229
711
51 TYP.
VIEW B-B
120
51
305
CONTROL
OPENING
(229 HIGH)
51
POWER
OPENING
(533 HIGH)
VIEW C-C
MICRO-COMPUTER
CONTROL CENTER
B
B
OPTIONS PANEL
C
800
191
1067
LD04008
543
CONTROL
TRANSFORMER
SERVICE SWITCH
2331
VIEW A-A
NOTES:
1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,
reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.
LD04007
C
651 (EDGE OF
UNIT TO COOLER
CONNECTION)
70
YORK INTERNATIONAL
Page 71
2235
A
A
191
1981
914
50
17272277
7892
2932
12351
2833
2642
10"
WATER OUTLET
10"
WATER INLET
2438
POWER OPENING
(BOTH SIDES)
(4) 57 DIA. RIGGING
HOLES (EACH SIDE)
SYS. #1 & #2
SYS. #3 & #4
SIDE VIEW
ORIGIN
762
762
A
POWER ELEMENTS
FOR SYS. #1 & #3
POWER ELEMENTS
FOR SYS. #2 & #4
POWER PANEL
CONTROL PANEL
I
80614531453
Y
X
16 DIA.
MOUNTING
HOLES (TYP.)
B
J
FORM 201.18-EG1
32
C
K
D
L
E
M
F
N
G
O
H
P
32
1453
TOP VIEW
214214221422
1422
LD04009
CENTER OF GRA VITY (Alum.)
YCASXYZ
040055561117867
044054591117861
CENTER OF GRAVITY (Copper)
YCASXYZ
0400565011171037
0440556311171028
LD04010
YORK INTERNATIONAL
71
Page 72
Operating Weights –
ALUMINUM FIN COIL WEIGHT DISTRIBUTION BY MODEL ( LBS )
MULTIPLE POINT POWER SUPPLY CONNECTION - 2 COMPRESSOR UNITS (SEE FIG. 1)
Field Connections to Factory provided Terminal Block (Std), Disconnects (Opt), or Individual System Breakers (Opt) in each of the two Motor Control Centers.)
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 T ables: -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.
13. Group Rated breaker must be HACR type for cUL Machines.
YORK INTERNATIONAL
89
Page 90
Power Connection Options
STYLE “F” 2 COMPRESSOR POWER WIRING CONNECTIONS
Optional Field Provided
115-1-60 Micropanel Supply
See page 93 for notes.
FIG. 1 – MULTIPLE POINT POWER SUPPLY CONNECTION
LD05548
Suitable for YAcross-The-Line Start
See Note 3
Optional Field Provided
115-1-60 Micropanel Supply
Suitable for YAcross-The-Line Start
∆∆
∆ Start and
∆∆
∆∆
∆ Start and
∆∆
See Note 3
See page 93 for notes.
FIG. 2 – OPTIONAL SINGLE-POINT POWER SUPPL Y WITH INDIVIDUAL SYSTEM CIRCUIT BREAKERS
90
LD05549
YORK INTERNATIONAL
Page 91
STYLE “F” 2 COMPRESSOR POWER WIRING CONNECTIONS
Optional Field Provided
115-1-60 Micropanel Supply
Suitable for:
Across-The-Line Start
FORM 201.18-EG1
See page 93 for notes.
LD05550
FIG. 3 – OPTIONAL SINGLE-POINT POWER SUPPLY CONNECTION WITH
FIELD SUPPLIED CIRCUIT PROTECTION
See Note 3
Optional Field Provided
115-1-60 Micropanel Supply
Suitable for:
Across-The-Line Start
See Note 3
See page 93 for notes.
LD05551
FIG. 4 – OPTIONAL SINGLE-POINT POWER SUPPLY WIRING TO FACTORY CIRCUIT BREAKER
YORK INTERNATIONAL
91
Page 92
Power Connection Options
3 & 4 COMPRESSOR POWER CONNECTION OPTIONS
(Continued)
Suitable for:
Across the Line Start
TB
1
TB
2
TB
TB
3
TB
4
or
DS
TB
or
DS
See page 93 for notes.
FIG. 5 – MULTIPLE POINT POWER SUPPLY CONNECTION
CB
1
CB
2
Control Power Wiring As Shown On
The Two Compressor Diagrams
Field Supply #2
See Note 3
Field Supply #1
LD05552
Suitable for:
Y - ∆ Start and
Across the Line Start
Control Panel Wiring as shown on
The Two-Compressor Diagrams
TB
CB
3
CB
4
or
Field Supply #2
DS
TB
or
Field Supply #1
DS
See page 93 for notes.
FIG. 6 – MULTIPLE POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM
CIRCUIT BREAKERS
92
LD05553
See Note 3
YORK INTERNATIONAL
Page 93
FORM 201.18-EG1
Suitable for:
Y - ∆ Start and
Across the Line Start
Control Panel Wiring As Shown on
The Two Compressor Diagram
See Note 3
CB
CB
1
3
CB
CB
2
4
TB
or
ield Supply
DS
See notes below.
FIG. 7 – OPTIONAL SINGLE-POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM CIRCUIT
BREAKERS
NOTES:
1. U.L. Label is provided on 60 Hz units for these electrical wiring configurations.
2. –– –– –– –– –– –– Dashed Line = Field Provided Wiring.
3. The above recommendations are based on the National Electric Code and using copper conductors only. Field wiring must also
comply with local codes. Group Rated breaker must be HACR type for cUL machines.
LD05554
LEGEND REFERS TO TYPICAL CONTROL WIRING DIAGRAM ON PAGES 96 & 97.
YORK INTERNATIONAL
LEGEND
T S
Transient V oltage 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
93
Page 94
T ypical Control W iring –
2-Compressor Units
94
YORK INTERNATIONAL
Page 95
FORM 201.18-EG1
LD04756
REFER TO
BOTTOM OF
P AGE 93
FOR LEGEND.
YORK INTERNATIONAL
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 recommended). Wiring shall not be run in the same conduit with any line voltage wiring.
3. To cycle 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 100va at 115 volts a.c.
5. Alarm contacts are for annunciating alarm/unit malfunction. Contacts are rated at 115V, 100va, resistive load only, and must be suppressed at load by user.
6. See Installation, Operation and Maintenance manual when optional equipment is used.
95
Page 96
Application Data
UNIT LOCATION
The YCAS chillers are designed for outdoor installation.
When selecting a site for installation, be guided by the
following requirements:
1. Installation sites may be either on a roof or on
ground level. (See FOUNDATION)
2. Select a place having an adequate supply of fresh
air for the condensers. Recommended clearances
for all units are shown on the DIMENSIONS pages.
3. Avoid locations near windows or structures where
normal operating sounds may be objectionable.
4. The standard condenser fans are propeller-type
and are not recommended for use with ductwork,
filters or other nuisance in the condenser air
stream.
5. When it is desirable to surround the unit(s), it is
recommended that the screening be able to pass
the required chiller CFM without exceeding 0.1"
external static pressure.
6. Protection against corrosive environments is
available by supplying the units with either copper
fins, or cured phenolic or epoxy-coating on the
condenser coils. Either the cured phenolic or
epoxy-coated coils should be utilized with any units
being installed at the seashore, or where salt spray
may hit the units, or where acid rain is prevalent
(copper condenser coils are not recommended
where they may be exposed to acid rain).
7. On installations where winter operation is intended
and snow accumulations are expected, additional
elevation must be provided to insure normal
condenser air flow.
FOUNDATION
The unit should be mounted on a flat and level
foundation, ground or roof, capable of supporting the
entire operating weight of the equipment. Operating
weights are given in the PHYSICAL DATA tables.
Roof Locations – Adequate structural strength to
safely support the entire weight of the unit and service
personnel must be provided. Care must be taken not to
damage the roof during installation. If the roof is
“bonded”, consult building contractor or architect for
special installation requirements. Roof installations
should incorporate the use of spring-type isolators to
minimize the transmission of vibration into building
structure. Additional support should be provided to the
roof at the spring-isolator locations.
Ground Locations – Units must be installed on a
substantial base that will not settle and cause strain on
the refrigerant lines, resulting in possible leaks. A onepiece concrete slab, with footers extending below the
frost line, is recommended. The slab should not be tied
to the main building foundation as noises will telegraph.
Mounting holes (5/8") are provided in the base rails for
bolting the unit to its foundation. See DIMENSIONS for
location of the mounting holes.
For ground installations, precautions should be taken to
protect the unit from tampering by, or injury to,
unauthorized persons. Fasteners on access panels will
prevent casual tampering; however, further safety
precautions, such as unit enclosure options, a fencedin enclosure, or locking devices on the panels may be
advisable. Check local authorities for safety regulations.
CHILLED LIQUID PIPING
The chilled liquid piping system should be laid out so
that the circulating pump discharges into the cooler.
The inlet and outlet cooler-liquid connections are given
in DIMENSIONS. Hand stop valves are recommended
for use in all lines to facilitate servicing. Drain
connections should be provided at all low points to
permit complete drainage of the cooler and system
piping.
A strainer (40 mesh) is recommended for use on the
INLET line to the cooler, and must be in place at initial
operation of the water pumps.
Pressure-gauge connections are recommended for
installation in the inlet and outlet water lines. Gauges
are not provided with the unit and are to be furnished by
others.
Chilled liquid lines exposed to the weather should be
wrapped with a supplemental heater cable and
insulated, or glycol should be added to the chilled liquid
to protect against freezing if low-ambient periods are
expected.
A flow switch is available as an accessory on all units. A
flow switch must be installed in the leaving water piping
of the cooler and must not be used to start and stop the
unit.
96
YORK INTERNATIONAL
Page 97
Guide Specifications
FORM 201.18-EG1
P ART 1 — GENERAL
1.01SCOPE
A. The requirements of the General Conditions, Supple-
mentary Conditions, Division 1, and Drawings apply
to all Work herein.
B. Provide Microprocessor controlled, twin-screw com-
pressor, air-cooled, liquid chillers of the scheduled
capacities as shown and indicated on the Drawings,
including but not limited to:
1. Chiller package
2. Charge of refrigerant and oil
3. Electrical power and control connections
4. Chilled water connections
1.02QUALITY ASSURANCE
A. Products shall be Designed, T ested, Rated and Cer-
tified in accordance with, and installed in compliance
with applicable sections of the following Standards
and Codes:
1. ANSI/ASHRAE Standard 15 –
Safety Code for
Mechanical Refrigeration
2. ANSI/NFPA Standard 70 –
Code
(N.E.C).
3.
ASME Boiler and Pressure Vessel Code, Section VIII, Division 1
4. ARI Standard 550/590 –
.
Screw Water Chilling Packages
5. Conform to Underwriters Laboratories (U.L.) for
construction of chillers and provide U.L./cU.L. Listing label.
6. Manufactured in facility registered to ISO 9002.
B. Factory Test: Chiller shall be pressure-tested, evacu-
ated and fully charged with refrigerant and oil, and
shall be factory operational run tested with water flowing through the vessel.
C.Warranty: Manufacturer shall W arrant all equipment
and material of its manufacture against defects in
workmanship and material for a period of one year
from date of initial start-up or eighteen (18) months
from date of shipment, whichever occurs first.
1.03DELIVERY AND HANDLING
A. Unit shall be delivered to job site fully assembled,
and charged with refrigerant and oil by the Manufacturer.
B. Unit shall be stored and handled per Manufacturer’s
instructions.
National Electrical
Centrifugal and Rotary
.
P ART 2 — PRODUCTS
2.01CHILLER MA TERIALS AND COMPONENTS
A. General: Install and commission, as shown on the
schedules and plans, factory assembled, charged,
and tested air cooled screw compressor chiller(s) as
specified herein. Chiller shall be designed, selected,
and constructed using a refrigerant with Flammability rating of “1”, as defined by ANSI/ASHRAE STANDARD-34
cation of Refrigerants
limited to: a complete system with not less than two
independent refrigerant circuits, semihermetic twin
screw compressors, direct expansion type evaporator, air-cooled condenser , refrigerant, lubrication system, interconnecting wiring, safety and operating
controls including capacity controller, control center ,
motor starting components, and special features as
specified herein or required for safe, automatic operation.
B. Cabinet: External structural members shall be con-
structed of heavy gauge, galvanized steel coated with
baked on powder paint which, when subject to ASTM
B117, 500 hour, 5% salt spray test, yields minimum
ASTM 1654 rating of “6”.
2.02COMPRESSORS AND MOTORS
A. Compressors: Shall be direct drive, semihermetic,
rotary twin-screw type, including: internal muffler, temperature actuated ‘off-cycle’ heater, rain-tight terminal box, internal discharge check, discharge and
suction shut-off service valves, and precision machined cast iron housing. Design working pressure
of entire compressor, suction to discharge, shall be
450 PSIG (31 bar). Compressor shall be U.L. listed.
B. Motors: Refrigerant suction gas cooled two-pole ac-
cessible hermetic compressor motor, full suction gas
flow through 0.006" maximum mesh screen, with inherent internal thermal overload protection and external current overload on all three phases. Motor
stator shall employ APT2000 type magnet wire.
C.Lubrication: External oil separators with no moving
or fragile parts, 450 PSIG design working pressure,
and UL listing. Refrigerant system differential pressure shall provide oil flow through service replaceable, 0.5 micron, full flow, cartridge type oil filter internal to compressor. Filter bypass, less restrictive
media, or oil pump not acceptable.
D.Capacity Control: Compressors shall start at mini-
mum load position. Capacity control range from 100%
to 10% of chiller full load using continuous function
slide valves, and without hot gas bypass. Step unloading unacceptable. Provide Microprocessor controlled, output pressure regulating capacity control
Number Designation and Safety Classifi-
. Chiller shall include, but is not
YORK INTERNATIONAL
97
Page 98
Guide Specifications
(Continued)
valve to command compressor capacity independent
of control valve input pressure and balance compressor capacity with cooling load.
2.03REFRIGERANT CIRCUIT COMPONENTS
Each independent refrigerant circuit shall include: liquid line shutoff valve with charging port, low side pressure relief device, removable core filter-drier, solenoid
valve, sight glass with moisture indicator, thermostatic
expansion valves, and flexible, closed-cell foam insulated suction line.
2.04HEA T EXCHANGERS
A. Evaporator:
1. Direct expansion type with refrigerant inside high
efficiency copper tubes, chilled liquid forced over
the tubes by galvanized steel baffles. Independent refrigerant circuits per compressor.
2. Constructed, tested, and stamped in accordance
with applicable sections of ASME pressure vessel code for minimum 350 PSIG (24 bar) refrigerant side design working pressure and 150 PSIG
(10 bar) water side design working pressure.
3. Shell covered with ¾" (19mm), flexible, closedcell insulation, thermal conductivity of 0.26k
([BTU/HR-Ft
with grooves for mechanical couplings, and insulated by Contractor after pipe installation.
4. Provide vent and drain fittings, and thermostatically controlled heaters to protect to -20°F (-29°C)
ambient in off-cycle.
B. Air Cooled Condenser:
1. Coils: Internally enhanced, seamless copper
tubes, mechanically expanded into aluminum alloy fins with full height collars. Subcooling coil an
integral part of condenser. Design working pressure shall be 450 PSIG (31 bar).
2. Fans: Shall be dynamically and statically balanced, direct drive, corrosion resistant glass fiber reinforced composite blades molded into low
noise, full airfoil cross section, providing vertical
air discharge from extended orifices for efficiency
and low sound. Each fan in its own compartment
to prevent cross flow during fan cycling. Guards
of heavy gauge, PVC (polyvinyl chloride) coated
or galvanized steel.
3. Fan Motors: High efficiency , direct drive, 6-pole,
3-phase, insulation class “F”, current protected,
T otally Enclosed Air-Over (TEAO), rigid mounted,
with double sealed, permanently lubricated, ball
bearings.
steel plate type, oven brazed with copper, U.L./cU.L.
Listed, 450 PSIG (31 bar) design working pressure.
2.05CONTROLS
A. General: Automatic start, stop, operating, and pro-
tection sequences across the range of scheduled
conditions and transients.
B. Control Circuit Transformer: Factory mounted with
primary breaker having lockable, external handle, and
115V/1Ø secondary.
C. Microprocessor Enclosure: Rain and dust tight NEMA
3R/12 (IP55) powder painted steel cabinet with
hinged, latched, and gasket sealed door.
D.Microprocessor Control Center:
1. Automatic control of compressor start/stop and
load/unload, anti-coincidence and anti-recycle timers, automatic pump-down at start-up and shutdown, condenser fans, evaporator pump, evaporator heater, unit alarm contacts, run signal contacts, and chiller operation from 0°F to 125°F
(-18°C to 52°) ambient. Automatic reset to normal chiller operation after power failure.
2. Setpoint Reset:
a. Pulse Width Modulated (PWM) input to reset
current unload setpoint downward via signal
from external Energy Management System
(EMS), maximum allowable reset programmable from microprocessor keypad.
b. PWM input to reset the chilled liquid setpoint
upward via signal from remote EMS, maximum allowable reset programmable from microprocessor keypad.
3. Software stored in non-volatile memory , with programmed setpoints retained in lithium battery
backed real time clock (RTC) memory for minimum 5 years.
4. Forty character liquid crystal display, descriptions
in English (or Spanish, French, Italian, or German), numeric data in English (or Metric) units.
Sealed keypad with sections for Setpoints, Display, Entry, Print, Program, Clock, and Unit On/
Off Switch.
5. Programmable Setpoints (within Manufacturer
limits): display language; discharge pressure unload and cutout; low suction pressure cutout; low
and high ambient cutouts; leaving chilled liquid
temperature: setpoint, control range, and cutout;
high motor current unload; anti-recycle time; lag
compressor start; local or remote control; units
of measure; compressor lead/lag; power failure
restart (auto or manual), and maximum EMSPWM reset temperature range.
98
YORK INTERNATIONAL
Page 99
FORM 201.18-EG1
6. Display Data: Chiller liquid return and leaving temperatures, ambient, lead compressor identification and lead/lag delay , clock and schedule, (variable) out of range, remote input indication, chilled
liquid reset setpoint, leaving liquid pull-down rate
setpoint, leaving liquid error (deviation from setpoint), and history data for last six shutdown faults.
Compressor suction, discharge, and oil pressures
and temperatures, suction and discharge superheats, percent of full-load motor current, operating hours, starts, and anti-recycle timer status.
Status Messages for manual override, unit switch
off, compressor run, run permissive, remote controlled shut down, no cooling load, daily/holiday
shut down, anti-recycle/anti-coincident timer, high
pressure low suction temperature limit.
7. System Safeties: Shall cause individual compressor systems to perform auto-reset shut down;
manual reset required after the third trip in 90
minutes. Includes: high discharge pressure or
temperature, low suction pressure, high / low
motor current, high pressure switch, high / low
differential oil pressure, high oil temperature, and
motor protector. Compressor motor protector shall
protect against damage due to: low or high input
current, phase reversal (reverse rotation), current
unbalance, phase loss, thermal overload of windings, and low voltage.
8. Unit Safeties: Shall be automatic reset and cause
compressors to shut down if: high or low ambient, low leaving chilled liquid temperature, under
voltage, and flow switch operation. Contractor
shall provide flow switch and wiring per chiller
manufacturer requirements.
9. Alarm Contacts: High or low ambient, low leaving
chilled liquid temperature, low voltage, low battery , and (per compressor circuit): high discharge
pressure or temperature, low suction pressure,
low or high motor current, low or high differential
oil pressure, and high oil temperature.
E. Manufacturer shall provide any controls not listed
above, necessary for automatic chiller operation.
Mechanical Contractor shall provide field control wiring necessary to interface sensors to the chiller control system.
2.06POWER CONNECTION and DISTRIBUTION
A. Power Panels:
1. NEMA 3R/12 (IP55) rain/dust tight, powder
painted steel cabinets with hinged, latched, and
gasket sealed outer doors equipped with wind
struts for safer servicing. Provide main power
connection(s), compressor and fan motor start
contactors, current overloads, and factory wiring.
2. Field power supply wiring connections shall be to
a single power center on the chiller, shall be 3
phase of scheduled voltage, and shall connect to
terminal blocks per each of the two motor control
panels. Separate disconnecting means and/or external branch circuit protection (by Contractor) required per applicable local or national codes.
3. Provide two electrically separate, adjacent motor
control center cabinets, with independent doors
and separated by a steel panel, for compressor
and fan motor power distribution components.
B. Exposed compressor and fan motor power wiring
shall be routed through liquid tight conduit.
2.07ACCESSORIES and OPTIONS
Some accessories and options supercede standard
product features. Your YORK representative will be
pleased to provide assistance.
A. Microprocessor controlled, Factory installed Wye-
Delta compressor motor starters for reduced compressor inrush start current. Two-compressor machines with Single-Point Power connection and
equipped with Star-Delta compressor motor start
must also include factory provided circuit breakers
in each motor control center. All 3 & 4 compressor
machines equipped with Star-Delta compressor motor start must also include factory provided circuit
breakers in each motor control center.
B. Power Supply Connections:
1. Two Compressor Machines –
a. Multiple Point with Individual System Circuit
Breakers or Non-Fused Disconnect Switches:
Two Field provided branch circuits shall connect to Individual System Circuit Breakers or
Non-Fused Disconnects per compressor on
each of the two motor control centers, with
lockable external handles on doors in compliance with Article 440-14 of the N.E.C.
b. Single-Point T erminal Block or Non-fused Dis-
connect Switch: Field provided branch circuit
shall connect to single-point Terminal Block
or Non-Fused Disconnect with lockable external handle in compliance with N.E.C. Article
440-14, with Factory provided interconnecting wiring to (optional Individual System Circuit Breakers, and) compressor motor start
components in each of two motor control center cabinets.
c. Single-Point Circuit Breaker: Field provided
branch circuit shall connect to Single-Point Circuit Breaker with Lockable External Handle
(in compliance with Article 440-14 of N.E.C.)
YORK INTERNATIONAL
99
Page 100
Guide Specifications
(Continued)
factory provided interconnecting wiring to compressor motor start components in each of two
motor control center cabinets.
2. Three and Four Compressor Machines –
a. Multiple Point power connection to Terminal
Blocks or Non-Fused Disconnect Switches:
Two Field provided branch circuits shall connect to factory provided Terminal Blocks or
Non-Fused Disconnect Switches, with Lockable External Handle in compliance with Article 440-14 of N.E.C., with factory furnished
interconnecting wiring to (optional Individual
System Circuit Breakers with lockable external handles, and) compressor motor start
components in each of the two motor control
center cabinets.
b. Single-Point T erminal Block or Non-fused Dis-
connect Switch: Field provided branch circuit
shall connect to Single-Point Terminal Block
or Non-Fused Disconnect with lockable external handle in compliance with N.E.C. Article
440-14, with factory provided interconnecting
wiring to Individual System Circuit Breakers
and compressor motor start components in
each of two motor control center cabinets.
C.Control Power Terminal Strip: Provided in Micropro-
cessor panel for field supplied 115V-1Ø control circuit power.
D.Condenser Coil Environmental Protection:
1. Black Fin: Epoxy coated aluminum fin stock to
guard from corrosive agents and insulate against
galvanic potential. For mild seashore or industrial locations.
2. Copper Fin: Provide copper fins in lieu of aluminum.
3. Phenolic Coating: Cured phenolic coating on condenser coils for seashore and other corrosive applications (with the exception of strong alkalis, oxidizers, and wet bromine, chlorine and fluorine in
concentrations greater than 100ppm).
E. Protective Chiller Panels (Factory Mounted):
1. Louvered Panels (condenser coils only): Painted
steel as per remainder of unit cabinet, over external condenser coil faces.
2. Wire Panels (full unit): Heavy gauge, welded wiremesh, coated to resist corrosion, to protect condenser coils from incidental damage and restrict
unauthorized access to internal components.
3. Louvered Panels (full unit): Painted steel as per
remainder of unit cabinet, to protect condenser
coils from incidental damage, visually screen internal components, and prevent unauthorized
access to internal components.
4. Louvered/Wire Panels: Louvered steel panels on
external condenser coil faces, painted as per
remainder of unit cabinet. Heavy gauge, welded
wire-mesh, coated to resist corrosion, around
base of machine to restrict unauthorized access.
F . Evaporator options:
1. Provide 1-½" cooler insulation in lieu of standard
¾".
2. Provide DX Cooler with 300 PSIG (20.7 bar) waterside design working pressure in lieu of standard 150 PSIG (10.3 bar).
3. Provide Raised Face Flanges for cooler nozzles:
a. 150 PSIG (10.3 bar), welded flanges (field kit,
mate supplied).
b. 300 PSIG (20.7 bar), welded flanges (factory
installed, no mate supplied).
c. 150 PSIG (10.3 bar), Victaulic™ Flanges (field
kit, no mate supplied).
4. Provide Chiller in accordance with Pressure
Safety codes in lieu of Standard ASME:
a. German TÜV construction.
b. French CODAP construction.
c. Italian ISPESL construction.
d. Polish UDT construction.
G. Remote Cooler: Manufacturer shall provide sepa-
rately: chiller less evaporator, evaporator , leaving and
return water sensors, and liquid line components (solenoid valves, filter driers, sight glasses, and TXVs),
as discrete elements of a complete factory system.
Contractor shall field erect system and provide interconnecting refrigerant piping and wiring in accordance with Manufacturer recommendations, and
project plans and schedules. Where not otherwise
specified, Contractor provided system piping shall be
in accordance with applicable sections of ASHRAE
Handbook.
H. Flow Switch (Field Mounted): Vapor proof SPDT,
NEMA 4X switch ( ___150 PSIG (10.3 bar) or
___300 PSIG (20.7 bar)), -20°F to 250°F (-28.9°C
to 121.1°C).
I. High External Static Pressure Fans and Motors: Fac-
tory installed fans and motors for up to 0.4 inches of
water (100Pa) external static pressure at nominal
condenser air flow.
J. Microprocessor Membrane Keypad Graphics on in
lieu of Standard English:
1. French language.
2. German language.
3. Spanish language.
4. Italian Language.
100
YORK INTERNATIONAL
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