FORM 150.72-EG8 (115)
MODEL YLAA AIR-COOLED SCROLL CHILLERS WITH
BRAZED PLATE HEAT EXCHANGERS
STYLE B
50 – 150 TON
180 – 530 kW
50 Hz
R-410A
FORM 150.72-EG8 (115)
Nomenclature
Y
L
A
A
0320
S
E
50
X
A
B
DEVELOPMENT
LEVEL = B (BPHX)
DESIGN SERIES A (MCHX)
X = ACROSS THE LINE
VOLTAGE CODE:
50 = 380/415-3-50
REFRIGERANT = R-134a
S = STANDARD EFFICIENCY
H = HIGH EFFICIENCY
FOUR DIGIT UNIT NUMBER
A = AMERICAS
A = AIR COOLED
L = SCROLL COMPRESSOR
Y = YORK CHILLER
Approvals
• ASME Boiler and Pressure Vessel Code – Section Vlll Division 1.
• AHRI Standard 550/590.
• UL 1995 – Heating and Cooling Equipment
• ASHRAE 15 – Safety Code for Mechanical Refrigeration
• ASHRAE Guideline 3 – Reducing Emission of Halogenated Refrigerants in Refrigeration and Air-Conditioning Equipment and Systems
• N.E.C. – National Electrical Code
• OSHA – Occupational Safety and Health Act
Products are produced at a
facility whose qualitymanagement systems are
ISO9001 certified.
2
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Table Of Contents
NOMENCLATURE.................................................................................................................................................... 2
APPROVALS............................................................................................................................................................ 2
TABLE OF CONTENTS............................................................................................................................................ 3
INTRODUCTION....................................................................................................................................................... 5
EQUIPMENT OVERVIEW......................................................................................................................................... 8
UNIT COMPONENTS............................................................................................................................................. 15
ACCESSORIES AND OPTIONS............................................................................................................................ 16
DESIGN PARAMETERS......................................................................................................................................... 20
WATER PRESSURE DROP.................................................................................................................................... 21
PHYSICAL DATA AND RATINGS.......................................................................................................................... 22
UNIT DIMENSIONS ............................................................................................................................................... 24
ISOLATOR LOCATIONS........................................................................................................................................ 30
ELECTRICAL NOTES............................................................................................................................................ 32
WIRING LUGS........................................................................................................................................................ 34
ELECTRICAL DATA W/O PUMPS......................................................................................................................... 36
WIRING DIAGRAM................................................................................................................................................. 38
USER CONTROL WIRING..................................................................................................................................... 40
NOTES.................................................................................................................................................................... 42
APPLICATION DATA.............................................................................................................................................. 44
GUIDE SPECIFICATIONS...................................................................................................................................... 46
JOHNSON CONTROLS
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FORM 150.72-EG8 (115)
THIS PAGE INTENTIONALLY LEFT BLANK.
4
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Introduction
Johnson Controls, the building efficiency leader, is proud to present the YORK Model
YLAA Air-Cooled Scroll Chiller.
FEATURES AND BENEFITS
Installation
The YLAA chiller arrives as a factory-assembled package ready to be installed outdoors,
either on the roof or at ground level. The air-cooled condensers eliminate the capital,
installation and maintenance costs of a cooling-tower circuit.
The YLAA weighs less and has s smaller footprint than other chillers in its class. In fact, it
is 20-35% lighter weight than the market average chiller. When the chiller is roof-mounted
in new construction, the cost of the support structure can be reduced. In building retrofits,
the YLAA can provide the largest capacity in a given space and existing structure.
Power hook-up could not be any easier with the standard single-point connection. A terminal block, disconnect switch or circuit breaker is provided to meet the unique needs of
every project and minimize installation time and labor. The factory-installed control transformer steps down the power voltage to the control voltage.
Chilled-water piping is also simple. The water connections are factory-piped to the outside of the unit, for ease of access. Factory-cut grooves, or optional flanges, make piping connections simple. Optional factory-installed pump kits eliminate the time, cost, and
mechanical-equipment room space necessary to install chilled-water pumps.
Press the start button with confidence – your YLAA has been run-tested at the factory to
ensure that you will have a successful start-up.
Reliability
The YLAA chiller is proven and reliable, designed to reduce service calls. The scroll compressors have logged hundreds of thousands of operating hours in numerous different
applications. The corrosive-resistant condenser heat exchangers have been specifically
designed for stationary HVAC applications and have undergone extensive laboratory and
field testing to extend chiller life and improve performance. They are also more rigid than
standard condenser coils, making them less susceptible to damage during rigging, lifting,
and installation of the chiller.
Components are designed to keep the chiller up-and-running. A factory-installed water
strainer prevents debris from affecting unit flow and/or heat transfer. The rugged thermaldispersion flow switch is factory-installed at the optimum location in the piping for superior
flow sensing, reducing the potential for nuisance trips. Intelligent controls protect the
chiller while keeping it online, for maximum uptime. Exterior panels of the chiller are
powder-coated with highly durable corrosion-resistant paint.
Efficiency
JOHNSON CONTROLS
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FORM 150.72-EG8 (115)
Introduction (Cont'd)
YLAA high-efficiency chillers, with their innovative control algorithms, offer industry-leading energy efficiency. Real-world energy efficiency is measured by IPLV (off-design) performance, and YLAA chillers provide some of the best IPLVs in their class.
YLAA also offers an efficiency choice. In addition to the high-efficiency units, YLAA chillers are available in standard efficiency models with smaller footprints and lower capital
costs.
Only pay for the chiller you need – the multi-efficiency levels of the YLAA allow you to
decide the best investment for the job.
Flexibility
The YLAA chiller offers a number of options designed to operate reliably across a wide
range of customer needs. It can cool glycol down to 10°F (-12°C). It can provide heat
recovery up to 140°F (60°C), with up to 85% of total heat rejection captured.
When factory-mounted pump kits are considered, there are now more pump sizes to
choose from. The optional kits come standard with valves, pressure ports, flow switch,
and strainer for quick hook-up, and frost protection to prevent freeze-up. There are also
more pump options available: variable-speed drives, dual pumps, service shut-off valves,
expansion tanks, and additional test ports for temperature and pressure sensing.
Standard low sound and multiple sound attenuation options allow flexibility in locating the
chiller, and reduce the cost for field-constructed barriers.
Sustainability
The YLAA makes you a leader in sustainability through innovation, not added cost. With
the combination of R-410A refrigerant, which has no ozone-depletion potential, and stateof-the-art heat exchanger technology that allows refrigerant charge to be reduced by as
much as 30%, the YLAA chiller provides the most ecologically friendly equipment. Partnered with its low-sound properties for noise pollution prevention, this chiller is a true
earth-friendly offering.
Communications
The YLAA chiller comes standard with native communication capability for BACnet (MS/
TP), Modbus, and N2, with optional capabilities available for LON. The standard unit capabilities include built-in-scheduling, remote start-stop, remote water temperature reset
and up to two steps of demand (load) limiting depending on model. The standard control
panel can be directly connected to a Johnson Controls Building Automated System via the
standard factory-installed RS232 communication port.
6
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Introduction (Cont'd)
Serviceability
Minimal maintenance is required to keep the unit operating at maximum performance. If
service should ever be required, the YLAA chiller has been designed to simplify the work,
keeping costs down. The layout of the chiller locates all the major components that can
be serviced near the outside edge. The condenser heat exchangers are light enough that
no crane is required for replacement. And when it’s time to clean them, city tap water,
with water pressure typical of a spray from a common garden hose, is all that’s needed.
JOHNSON CONTROLS
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FORM 150.72-EG8 (115)
Equipment Overview
The 50 - 150 Ton (180 - 530 kW) YLAA models are shipped complete from the factory
ready for installa­tion and use.The unit is pressure-tested, evacuated, and fully charged
with a zero Ozone Depletion Potential Refrigerant R-410A and includes an initial oil charge.
After assembly, a complete operational test is performed with water flowing through the
evaporator to as­sure that the refrigeration circuit operates correctly.
The unit structure is heavy-gauge, galvanized steel. This galvanized steel is coated with
baked-on powder paint, which, when subjected to ASTM B117 1000 hour, salt spray testing, yields a minimum ASTM 1654 rating of “6”. Units are designed in accordance with
NFPA 70 (National Electric Code), ASHRAE/ANSI 15 Safety code for mechanical refrigeration, ASME and rated in accordance with AHRI Standard 550/590.
COMPRESSORS
The chiller has suction-gas cooled, hermetic scroll com­pressors. The YLAA compressors incorporate a compli­ant scroll design in both the axial and radial direction. All rotating parts are
statically and dynamically balanced. A large internal volume and oil reservoir provides greater
liquid tolerance. Compressor-crankcase heaters are also included for extra protection against
liquid migration.
LD18425
BRAZED PLATE EVAPORATOR
The compact, high efficiency Brazed Plate Heat Exchanger (BPHE) is constructed with
316L stainless steel corrugated channel plates with a filler material between each plate. It
offers excellent heat transfer performance with a compact size and low weight, reducing
structural steel requirements on the job site.
8
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Equipment Overview (Cont'd)
LD18426
The heat exchanger is manufactured in a precisely controlled vacuum-brazing process
that allows the filler material to form a brazed joint at every contact point between the
plates, creating complex channels. The arrangement is similar to older plate and frame
technology, but without gaskets and frame parts.
Water inlet and outlet connections are 3” in diameter and are grooved for compatibility
with field supplied ANSI/AWWA C-606 couplings.
A 20 mesh wye-strainer is provided as standard to provide protection at the evaporator
inlet, particularly at system start-up when construction debris may be present in the piping
system.
The evaporator is equipped with a thermostat-controlled heater. The heater provides
freeze protection for the evaporator down to -20°F (-29°C) ambient. The evaporator is
covered with 3/4” flexible, closed-cell, foam insulation (K=0.25).
A factory-wired flow switch is standard, installed in a pipe section at the outlet of the
evaporator.
JOHNSON CONTROLS
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FORM 150.72-EG8 (115)
Equipment Overview (Cont'd)
CANADIAN REGISTRATION NUMBER (CRN) APPLICATION & PROOF OF
CONFORMANCE
Reference Table 1 for YLAA brazed plate evaporator Canadian Registration Numbers
(CRN) for all Canadian Provinces. Since all YLAA brazed plate evaporators are categorized as pressure “H” fittings per CSA-B51, a CRN label or marking is not provided on the
evaporator. According to the Canadian Standards Association’s Boiler, pressure vessel,
and pressure piping code B-51 (2009 version), a product registered as a category “H” fitting does not require a label or marking displaying the CRN.
Table 1 - CANADIAN REGISTRATION NUMBERS
CANADIAN PROVINCE
BC
AB
ON
PQ/MB/SK
NB
NS
PEI
NF
NU
NWT
YU
CRN#
OH13953.51
OH13953.52
OH13953.5
OH13953.56
OH13953.57
OH13953.58
OH13953.59
OH13953.50
OH13953.5N
OH13953.5T
OH13953.5Y
CONDENSER
Coils - Condenser coils are made of a single material to avoid galvanic corrosion due
to dissimilar metals. Coils and headers are brazed as one piece. Integral sub cooling is
included. The design working pressure of the coil is 650 PSIG (45 bar). Condenser coil is
easily washable with clear water up to 100 psi (7 bar).
LD18427
Fans – The condenser fans are composed of corrosion resistant aluminum hub and glassfiber-reinforced poly­propylene composite blades molded into a low-noise airfoil section.
They are designed for maximum efficiency and are statically and dynamically balanced for
vibration-free operation. They are directly driven by independent motors, and positioned
for vertical air discharge. The fan guards are constructed of heavy-gauge, rust-resistant,
coated steel. All blades are statically and dynamically balanced for vibration-free operation.
10
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Equipment Overview (Cont'd)
LD18428
Motors – The fans are driven by Totally Enclosed Air-Over, squirrel-cage type, current protected motors. They feature ball bearings that are double-sealed and permanently lu­bricated.
UNIT CONTROL SYSTEM
The YLAA chiller is designed with an intelligent control system that operates the chiller
automatically with maximum reliability, safety and ease of use. The controls are factory
tested and with as little user input as a chilled liquid setpoint the chiller will operate to meet
the load demand.
The control system includes native BACnet MS/TP, Modbus and N2 communications, with
LON protocol served through an optional eLink communications card.
DISPLAY
KEYPAD
ON/OFF
SWITCH
MICROBOARD
CONTROL
TRANSFORMER
TERMINAL
BLOCK
LD18429
FUSES
The operating program is stored in non-volatile memory (EPROM), so power failures and
battery discharge will not require reprogramming the chiller. Programmed setpoints are
retained in lithium battery-backed RTC memory for 5 years minimum.
JOHNSON CONTROLS
11
FORM 150.72-EG8 (115)
Equipment Overview (Cont'd)
Unit alarm contacts are standard. Contacts for remote chilled liquid temperature reset
and two steps of demand load limiting are also standard, for projects without BAS or for
redundancy.
Maximum reliability is achieved through intelligent control. Run hours and starts are averaged across all compressors automatically, and between both pumps of the optional
dual pump hydro-kit. When compressors are cycled off, an anti-recycle timer ensures
the motors have time to cool before starting again, for the maximum service life. At unit
shutdown, the unit pumps down automatically to prevent liquid refrigerant from entering
the compressors at restart, which can cause premature bearing wear and other compressor damage.
Liquid temperature sensors provide feedback to the controller, and logic predicts when
additional capacity will be required based on how quickly the unit has loaded or unloaded
in the past. This prevents unnecessary compressor cycling and helps maintain setpoint
accurately.
If there is a problem that prevents the unit operating properly, the controls are designed to
allow the unit to operate safely while making as much capacity as possible. For example,
if airflow to the condenser coil is diminished due to a dirty coil, the chiller will unload slightly
to provide maximum capacity possible while remaining within the unit operating envelope.
If a fault prevents the unit from starting or causes it to shutdown, the chiller will attempt to
restart three times. If it cannot start, a manual reset is required to alert the operator about
the fault condition. The fault history is stored in the unit controller RTC memory for the
last six fault shutdown conditions. An RS-232 port provides capability to print hard copy
reports (printer available separately).
All controls are contained in a NEMA 3R cabinet with a hinged outer door and includes a
liquid crystal display (LCD) with light emitting diode (LED) backlighting for outdoor viewing. There are two display lines, each with twenty text characters per line, and a color
coded 12-button non-tactile keypad with sections for display, entry and printing.
DISPLAY/PRINT provides quick access to frequently needed information:
• Chilled liquid temperatures
• Ambient temperature
• System pressures (each circuit)
• Operating hours and starts (each compressor)
• Operating data for the systems
ENTRY section allows entering setpoints or modifying system values.
SETPOINTS updating can be performed to:
• Chilled liquid temperature setpoint and range
• Remote reset temperature range
• Set daily schedule/holiday for start/stop
• Manual override for servicing
• Low and high ambient cut-outs
• Number of compressors
12
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Equipment Overview (Cont'd)
• Low liquid temperature cut-out
• Low suction pressure cut-out
• High discharge pressure cut-out
• Anti-recycle timer (compressor start cycle time)
• Anti-coincident timer (delay compressor starts)
UNIT section to:
• Set time
• Set unit options
In addition, the microprocessor control center is capable of displaying the following data
points:
• Return and leaving liquid temperature
• Low leaving liquid temperature cut-out setting
• Low ambient temperature cut-out setting
• Outdoor air temperature
• English or Metric data
• Suction pressure cut-out setting
• Each system suction pressure
• Discharge pressure (optional)
• Anti-recycle timer status for each system
• Anti-coincident system start timer condition
• Compressor run status
• Day, date and time
• Daily start/stop times
• Holiday status
• Automatic or manual system lead/lag control
• Lead system definition
• Compressor starts & operating hours (each compressor)
• Status of hot gas valves, evaporator heater and fan operation
• Run permissive status
• Number of compressors running
• Liquid solenoid valve status
JOHNSON CONTROLS
13
FORM 150.72-EG8 (115)
Equipment Overview (Cont'd)
• Load & unload timer status
• Water pump status
COMMUNICATIONS
• Native communication capability for BACnet (MS/TP), Modbus and N2
• Optional communciation available for LON via eLink option
BUILDING AUTOMATION SYSTEM INTERFACE
In addition to native BACnet, Modbus and N2, the YLAA chiller accepts a 4-20 milliamp
or 0-10VDC input to reset of the leaving chilled liquid temperature. The standard unit capabilities include remote start-stop, remote water temperature reset via up to two steps of
demand (load) limiting depending on model. The standard control panel can be directly
connected to a Johnson Controls Building Automated System via the standard on-board
RS232 communication port. (Factory- installed)
POWER PANEL
• Each panel contains:
• Compressor power terminals
• Compressor motor starting contactors per l.E.C.
• Control power terminals to accept incoming for 115-1-60 control power
• Fan contactors & overload current protection
The power wiring is routed through liquid-tight conduit to the compressors and fans.
FAN
CONTACTORS
FAN
FUSE
FAN
CONTACTORS
DISCONNECT
SWITCH
FAN
CONTACTORS
FAN
FUSE
FAN
CONTACTORS
XTBF1
COMPRESSOR
CONTACTORS
GROUND
LUG
COMPRESSOR
CONTACTORS
COMPRESSOR
OVERLOADS
LD18430
14
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Unit Components
MICROCHANNNEL
COILS
FAN DECK
HYDRO-KIT
PUMPS AND
MOTORS
(OPTIONAL)
FORMED STEEL
BASE RAILS
COIL
HEADERS
CONTROL
AND POWER
PANELS
COMPRESSORS
BRAZED PLATE
EVAPORATOR
LD18426
Figure 1 - GENERAL UNIT COMPONENTS
JOHNSON CONTROLS
15
FORM 150.72-EG8 (115)
Accessories and Options
POWER OPTIONS:
Unit Power Connections – Single-point terminal block connection(s) are provided as
standard. The following power connections are available as options. (See electrical data
for specific voltage and options availability.) (Factory installed)
Single-Point Supply Terminal Block – Includes enclosure, terminal-block and interconnecting wiring to the compressors. Separate external protection must be supplied, by
others, in the incoming compressor-power wiring. (Do not include this option if either the
Single-Point Non-Fused Disconnect Switch or Single-Point Circuit Breaker options have
been included.)
Single-Point Non-Fused Disconnect Switch – Unit-mounted disconnect switch(es)
with external, lockable handle (in compliance with Article 440-14 of N.E.C.)can be supplied to isolate the unit power voltage for servicing. Separate external fusing must be supplied, by others in the power wiring, which must comply with the National Electrical Code
and/or local codes.
Single-Point Circuit Breaker – A unit mounted circuit breaker with external, lockable
handle (in compliance with NEC Article 440-14), can be supplied to isolate the power voltage for servicing. (This option includes the Single-Point Power connection.)
Multiple Point Supply With Individual System Circuit Breakers – Two unit-mounted
circuit break- ers, with external lockable handles (in compliance with NEC Article 440-14),
can be supplied to isolate the power voltage for servicing. (SQ only)
Control Transformer – Converts unit power voltage to 115-1-60 (0.5 or 1.0 kVA capacity). Factory mounting includes primary and secondary wiring between the transformer
and the control panel. (Factory installed)
Power Factor Correction Capacitors – Will correct unit compressor power factors to a
0.90-0.95. (Factory installed)
CONTROL OPTIONS:
High Ambient Kit – Allows units to operate when the ambient temperature is above 46°C
(115°F). Includes sun shield panels and discharge pressure transducers.
Low Ambient Kit – Standard units will operate to -1°C (30°F). This accessory includes
all necessary components to permit chiller operation to -18°C (0°F). (This option includes
the discharge pressure transducer/readout capability option.) For proper head pressure
control in applications below -1°C (30°F) where wind gusts may exceed 8 kph (5 mph),
it is recommended that optional condenser louvered enclosure panels also be included.
(Factory installed)
Language LCD And Keypad Display – Spanish, French, German, and Italian unit LCD
controls and keypad display available. Standard language is English.
16
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Accessories and Options (Cont'd)
COMPRESSOR, PIPING, EVAPORATOR OPTIONS:
Low Temperature Glycol – Replaces standard Thermostatic Expansion Valves with
Electronic Expansion Valves to achieve leaving glycol temperatures as low as -12°C
(10°F). Required for any leaving liquid temperature below -1°C (30°F). Electronic Expansion Valves permit operation at both low temperatures and comfort cooling applications
without a capacity loss or derate at either condition. (Factory installed)
Chicago Code Relief Valves – Unit will be provided with relief valves to meet Chicago
code requirements. (Factory installed)
Service Suction Isolation Valve – Service suction discharge (ball-type) isolation valves
are added to unit per system (discharge service ball-type isolation valve is standard on
each circuit). (Factory installed)
Hot Gas By-Pass – Permits continuous, stable operation at capacities below the minimum step of compressor unloading to as low as 5% capacity (depending on both the unit
and operating conditions) by introducing an artificial load on the evaporator. Hot gas bypass is installed on only refrigerant system #1. (Factory installed)
Thermal Dispersion Flow Switch – A thermal dispersion type flow switch provides accurate, low maintenance flow proving and is included standard. It is factory wired and installed in the extension pipe between evaporator outlet and edge of chiller. The extension
pipe is secured to the chiller frame for shipping to avoid risk of damage to evaporator and
is easily attached to the evaporator at startup using the supplied ANSI/AWWA C-606 connector. The flow switch can be deleted if alternate or existing flow switch is field supplied.
Evaporator Nozzle Extension Kit – Pipe and ANSI/AWWA C-606 fittings to extend the
evaporator connections to the outside of the chiller. Includes the Thermal Dispersion Flow
Switch. Provided as standard on all chillers but can be deleted if alternate or existing piping and flow switch is field supplied. The extension pipe is secured to the chiller frame for
shipping to avoid risk of damage to evaporator and is easily attached to the evaporator at
startup using the supplied ANSI/AWWA C-606 connector. A support bracket for the extension kit or field piping is standard on all chillers.
Heat Recovery Condenser – A partially condensing refrigerant to liquid condenser recovers heat off both refrigerant circuits and rejects into a single liquid circuit. Factory
installed between the compressor discharge and the condenser (air) coils to capture the
maximum amount of heat. Capable of recovering up to 85% total heat of rejection (cooling load plus work input); temperatures as high as 60°C (140°F) are possible.
Hydro-Kit – Factory installed Hydro-Kit suitable for water glycol systems with up to 35%
glycol at leaving temperatures down to 20°F. The hydro-kit option is available in a single
or dual configuration (dual as standby duty only), with totally enclosed permanently lubricated pump motors.
The hydro-kit option comes standard with a balancing valve, discharge check valve, discharge shutoff valve, thermal dispersion flow switch, pressure ports, inlet wye-strainer,
bleed and drain valves and frost protection.
Service shut off valves, additional pressure ports and expansion tanks are optional within
the hydro-kit option.
JOHNSON CONTROLS
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FORM 150.72-EG8 (115)
Accessories and Options (Cont'd)
CONDENSER AND CABINET OPTIONS:
Condenser coil protection against corrosive environments is available by choosing any
of the following options. For additional application recommendations, contact your local
Johnson Controls office. (Factory installed)
Post-Coated Condenser Coils – The unit is built with electrostatic post-coated condenser coils. This is the choice for corrosive applications (with the exception of strong alkalies,
oxidizers and wet bromine, chlorine and fluorine in concentrations greater than 100 ppm).
Enclosure Panels (Unit) – Tamperproof enclosure panels prevent unauthorized access
to units. Enclosure panels can provide an aesthetically pleasing alternative to expensive
fencing. Additionally, for proper head pressure control, Johnson Controls recommends the
use of Condenser Louvered Panels for winter applications where wind gusts may exceed
8 kph (5 mph). The following types of enclosure panels are available:
Wire Panels (Full Unit) – Consists of welded wire-mesh guards mounted on the exterior
of the unit. Prevents unauthorized access, yet provides free air flow. (Factory installed)
Wire/Louvered Panels – Consists of welded wire-mesh panels on the bottom part of unit
and louvered panels on the condenser section of the unit. (Factory- mounted).
Louvered Panels (Condenser Coil Only) – Louvered panels are mounted on the sides
and ends of the condenser coils for protection. (Factory installed)
Louvered Panels (Full Unit) – Louvered panels surround the front, back, and sides of
the unit. They prevent unauthorized access and visually screen unit components. Unrestricted air flow is permitted through generously sized louvered openings. This option
is applicable for any outdoor design ambient temperature up to 46°C (115°F). (Factory
installed)
Coil End Hail Guard – Louvered panel attached to exposed coil end. (Factory installed)
18
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Accessories and Options (Cont'd)
SOUND ATTENUATION:
One or both of the following sound attenuation options are recommended for residential
or other similar sound sensitive locations.
Compressor Acoustic Sound Blanket – Each compressor is individually enclosed by
an acoustic sound blanket. The sound blankets are made with one layer of acoustical absorbent textile fiber of 15mm (5/8”) thickness; one layer of heavy duty anti-vibration material thickness of 3mm (1/8”). Both are closed by two sheets of welded PVC, reinforced for
temperature and UV resistance. (Factory installed)
Ultra Quiet Fans – Lower RPM, 8-pole fan motors are used with steeper-pitch fans. (Factory installed)
VIBRATION ISOLATION
Vibration Isolators – Level adjusting, spring type 1” (25.4mm), 2” (50.8 mm) deflection,
or neoprene isolators for mounting under unit base rails. (Field installed)
JOHNSON CONTROLS
19
FORM 150.72-EG8 (115)
Design Parameters
NOMINAL EVAPORATOR WATER FLOW
UNIT
DESIGNATION
TEMPERATURE (°C)
MIN1
YLAA0180SE
YLAA0210SE
YLAA0241SE
YLAA0286SE
YLAA0320SE
YLAA0360SE
YLAA0400SE
YLAA0435SE
YLAA0485SE
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
YLAA0195HE
YLAA0221HE
YLAA0261HE
YLAA0300HE
YLAA0350HE
YLAA0390HE
YLAA0441HE
YLAA0456HE
YLAA0516HE
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
20
WATER FLOW (l/s)
MAX2
MIN
MAX
STANDARD EFFICIENCY
12.8
5
12.6
12.8
5
12.6
12.8
5
12.6
12.8
6.3
22.4
12.8
6.3
24.3
12.8
6.3
24.3
12.8
7.6
39.4
12.8
7.6
39.4
12.8
9.5
39.4
HIGH EFFICIENCY
12.8
6.3
22.4
12.8
6.3
22.4
12.8
6.3
24.3
12.8
6.3
24.3
12.8
7.6
39.4
12.8
9.5
39.4
12.8
9.5
39.4
12.8
7.6
39.4
12.8
11.3
41.0
AIR ON CONDENSER
(°C)
MIN3
MAX4
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
51.7
51.7
51.7
51.7
51.7
51.7
51.7
51.7
51.7
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
-17.8
51.7
51.7
51.7
51.7
51.7
51.7
51.7
51.7
51.7
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Water Pressure Drop
YLAA EVAPORATOR PRESSURE DROP CURVE
WATER PRESSURE DROP (kPa)
500
C
E
A
50
F
B
D
5
5
50
LD18455
WATER FLOW RATE (m3/h)
JOHNSON CONTROLS
EVAPORATOR
A
B
C
YLAA MODELS
180SE, 210SE, 241SE
0286SE, 0195HE, 0221HE
0320SE, 0360SE, 0261HE, 0300HE
D
0400SE, 0435SE, 0350HE, 0455HE, 0456HE
E
F
0485SE, 0390HE, 0441HE
0516HE
21
FORM 150.72-EG8 (115)
Physical Data and Ratings
YLAA
REFRIGERANT R-410A
GENERAL UNIT DATA
Nominal Tons, R-410A
COP
IPLV
Length (mm)
Width (mm)
Height (mm)
Number of Refrigerant
Circuits
Refrigerant Charge, Operating
R-410A, Ckt1 / Ckt2, kg
Oil Charge, Ckt1 / Ckt2, liters
Shipping Weight (kg)
Operating Weight (kg)
Compressors, scroll type
Compressors Per Circuit
Condenser
Total Face Area m2
Number of Rows
Condenser Fans
Number of Fans, Ckt1 / Ckt2
Fan hp
Fan RPM
Total Chiller m3/sec
Evaporator
Water Volume, liters
Maximum Water Side
Pressure, bar
Maximum Refrigerant Side
Pressure, bar
Water Connections Size, inch
STANDARD EFFICIENCY UNITS
0180SE 0210SE 0241SE 0286SE 0320SE 0360SE 0400SE 0435SE 0485SE
53.9
57.3
62.1
76.9
86.3
97.6
109.2
118.4
132.0
2.99
2.34
2.78
2.61
2.37
2.66
2.55
2.70
2.55
4.66
3.84
4.25
4.45
4.16
4.40
4.28
4.40
4.31
2912
2912
2912
2912
2912
3614
3614
3614
3614
2242
2242
2242
2235
2235
2242
2242
2242
2242
2397
2397
2397
2397
2397
2397
2397
2397
2397
2
2
2
2
2
2
2
2
2
21/15
25/15
24/23
26/24
26/26
30/26
31/29
31/29
32/30
9/6
1668
1689
11/6
1702
1723
9/9
1768
1789
9/11
1831
1857
11/11
1995
2028
16/9
2781
2814
16/11
2834
2873
16/14
2604
2642
16/16
2705
2755
3/2
2/2
3/3
3/2
2/2
3/3
3/2
3/3
3/3
7
1
7
1
10
1
10
1
10
1
13
1
13
1
15
1
15
1
2/2
2
950
20
2/2
2
950
20
2/2
2
950
28
2/2
2
950
28
2/2
2
950
28
3/2
2
950
35
3/2
2
950
35
3/3
2
950
42
3/3
2
950
42
20.4
20.4
20.4
25.4
33.3
33.3
37.9
37.9
50.0
10.3
10.3
10.3
10.3
10.3
10.3
10.3
10.3
10.3
31
31
31
31
31
31
31
31
31
3
3
3
3
3
3
3
3
3
NOTES:
1. Standard Rating Conditions per AHRI Standard 550/590.
2. COP = Chiller COP (includes power from compressors, fans, and the control panels).
3. Rated in accordance with AHRI Standard 550/590 at an air on condenser temperature of 95°F and a leaving chilled water temperature of
44°F.
4. Additional rating information can be provided by your local Johnson Controls Sales Office.
22
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Physical Data and Ratings (Cont'd)
REFRIGERANT R-410A
YLAA
HIGH EFFICIENCY UNITS
GENERAL UNIT DATA
0195HE 0221HE 0261HE 0300HE 0350HE 0390HE
Nominal TONs, R-410A
56.3
60.1
70.5
87.8
98.1
109.5
COP
3.11
3.22
3.11
3.11
3.11
3.02
IPLV
4.92
4.84
4.75
4.57
4.48
4.63
Length (mm)
2912
2912
2912
3614
3614
3614
Width (mm)
2242
2242
2242
2235
2235
2242
Height (mm)
2397
2397
2397
2397
2397
2397
Number of Refrigerant
2
2
2
2
2
2
Circuits
Refrigerant Charge,
24/17
25/23
25/25
28/24
29/29
33/28
Operating R-410A, Ckt1 /
Ckt2, kg
Oil Charge, Ckt1 / Ckt2, liters
9/6
9/6
9/9
12/10
11/11
16/9
Shipping Weight (kg)
1688
1700
1822
2137
2301
2458
Operating Weight (kg)
1714
1725
1855
2170
2339
2508
Compressors, scroll type
Compressors Per Circuit
3/2
3/2
3/3
2/2
2/2
3/3
Condenser
7.4
10
10
12.6
15.1
15.1
Total Face Area m2
Number of Rows
1
1
1
1
1
1
Condenser Fans
Number of Fans, Ckt1 / Ckt2
2/2
2/2
2/2
3/2
3/3
4/2
Fan hp
2
2
2
2
2
2
Fan RPM
950
950
950
950
950
950
Total Chiller m3/sec
20
28
28
35
42
42
Evaporator
Water Volume, liters
25.4
25.4
33.3
33.3
37.9
50.0
Maximum Water Side
10.3
10.3
10.3
10.3
10.3
10.3
Pressure, bar
Maximum Refrigerant Side
31
31
31
31
31
31
Pressure, bar
Water Connections Size, inch
3
3
3
3
3
3
441HE
121.5
3.02
4.60
4731
2242
2393
456HE
127.6
3.05
4.63
4731
2242
2393
516HE
147.4
3.05
4.84
4731
2242
2393
2
2
2
38/28
37/36
40/40
16/11
3294
3344
16/14
3444
3482
16/16
3561
3615
3/2
3/3
3/3
17.6
1
20.1
1
20.1
1
4/3
2
950
49
4/4
2
950
56
4/4
2
950
56
50
37.9
54
10.3
10.3
10.3
31
31
31
4*
4*
4*
* Side extension kit (standard), evaporator nozzle remains 3”
NOTES:
1. Standard Rating Conditions per AHRI Standard 550/590.
2. COP = Chiller COP (includes power from compressors, fans, and the control panels).
3. Rated in accordance with AHRI Standard 550/590 at an air on condenser temperature of 95°F and a leaving chilled water temperature
of 44°F.
4. Additional rating information can be provided by your local Johnson Controls Sales Office.
JOHNSON CONTROLS
23
FORM 150.72-EG8 (115)
Unit Dimensions
YLAA0180SE, 0210SE, 0195HE
LD18445
NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Controls’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; 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 (6'); rear to wall – 2m (6’); control panel to end wall
– 1.2m (4'0''); top – no obstructions allowed; distance between adjacent units – 10'. No more than one adjacent wall may be higher than the
unit.
24
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Unit Dimensions (Cont'd)
YLAA0240SE, 0285SE, 0320SE
LD18446
NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Controls’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; 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 (6'); rear to wall – 2m (6’); control panel to end wall
– 1.2m (4'0''); top – no obstructions allowed; distance between adjacent units – 10'. No more than one adjacent wall may be higher than the
unit.
JOHNSON CONTROLS
25
FORM 150.72-EG8 (115)
Unit Dimensions (Cont'd)
YLAA0360SE, 0400SE, 0300HE
LD18447
NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Controls’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; 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 (6'); rear to wall – 2m (6’); control panel to end wall
– 1.2m (4'0''); top – no obstructions allowed; distance between adjacent units – 10'. No more than one adjacent wall may be higher than the
unit.
26
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Unit Dimensions (Cont'd)
YLAA0435SE, 0485SE, 0350HE, 0390HE
LD18448
NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Controls’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; 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 (6'); rear to wall – 2m (6’); control panel to end wall
– 1.2m (4'0''); top – no obstructions allowed; distance between adjacent units – 10'. No more than one adjacent wall may be higher than the
unit.
JOHNSON CONTROLS
27
FORM 150.72-EG8 (115)
Unit Dimensions (Cont'd)
YLAA0441HE
LD18449
NOTE:
28
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Controls’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; 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 (6'); rear to wall – 2m (6’); control panel to end wall
– 1.2m (4'0''); top – no obstructions allowed; distance between adjacent units – 10'. No more than one adjacent wall may be higher than the
unit.
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Unit Dimensions (Cont'd)
YLAA0456HE AND YLAA0516HE
LD18450
NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Controls’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; 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 (6'); rear to wall – 2m (6’); control panel to end wall
– 1.2m (4'0''); top – no obstructions allowed; distance between adjacent units – 10'. No more than one adjacent wall may be higher than the
unit.
JOHNSON CONTROLS
29
FORM 150.72-EG8 (115)
Isolator Locations
FOUR FAN ISOLATOR LOCATIONS
LD18451
FIVE AND SIX FAN ISOLATOR LOCATIONS
LD18452
All dimensions are millimeters [inches] unless otherwise specified.
30
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Isolator Locations (Cont'd)
SEVEN AND EIGHT FAN ISOLATOR LOCATIONS
LD18453
All dimensions are millimeters [inches] unless otherwise specified.
JOHNSON CONTROLS
31
FORM 150.72-EG8 (115)
Electrical Notes
NOTES:
1. Minimum Circuit Ampacity (MCA) is based on 125% of the rated load amps for the
largest motor plus 100% of the rated load amps for all other loads included in the circuit, per N.E.C. Article 430‑24. If the optional Factory Mounted Control Transformer
is provided, add the following MCA values to the electrical tables for the system
providing power to the transformer: -50 = 380/415-3-50, add 1 amps.
2. The minimum recommended disconnect switch is based on 115% of the rated load
amps for all loads included in the circuit, per N.E.C. Article 440.
3. Minimum fuse size is based upon 150% of the rated load amps for the largest motor
plus 100% of the rated load amps for all other loads included in the circuit to avoid
nuisance trips at start‑up due to lock rotor amps. 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 35ºC (95ºF) is anticipated.
4. Maximum fuse size is based upon 225% 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 440-22.
5. Circuit breakers must be UL listed and CSA certified and maximum size is based
on 225% of the rated load amps for the largest motor plus 100% of the rated load
amps for all other loads included in the circuit. Otherwise, HACR‑type circuit breakers must be used. Maximum HACR circuit breaker rating is based on 225% of the
rated load amps for the largest motor plus 100% of the rated load amps for all other
loads included in the circuit.
6. The “INCOMING WIRE RANGE” is the minimum and maximum wire size that can
be accommodated by the unit wiring lugs. The (2) preceding the wire range indicates the number of termination points available per phase of the wire range specified. Actual wire size and number of wires per phase must be determined based on
the National Electrical Code, using copper connectors only. Field wiring must
also comply with local codes.
7. A ground lug is provided for each compressor system to accommodate a field
grounding conductor per N.E.C. Table 250‑95. A control circuit grounding lug is also
supplied.
8. The supplied disconnect is a “Disconnecting Means” as defined in the N.E.C. 100,
and is intended for isolating the unit for the available power supply to perform maintenance and troubleshooting. This disconnect is not intended to be a Load Break
Device.
9. Field Wiring by others which complies to the National Electrical Code & Local Codes.
32
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Electrical Notes (Cont'd)
LEGEND
ACR-LINE
C.B.
D.E.
DISC SW
FACT MOUNT CB
FLA
HZ
MAX
MCA
MIN
MIN NF
RLA
S.P. WIRE
UNIT MTD SERV SW
LRA
ACROSS THE LINE START
CIRCUIT BREAKER
DUAL ELEMENT FUSE
DISCONNECT SWITCH
FACTORY MOUNTED CIRCUIT BREAKER
FULL LOAD AMPS
HERTZ
MAXIMUM
MINIMUM CIRCUIT AMPACITY
MINIMUM MINIMUM NON FUSED RATED LOAD AMPS
SINGLE POINT WIRING
UNIT MOUNTED SERVICE (NON-FUSED DISCONNECT SWITCH)
LOCKED ROTOR AMPS
VOLTAGE CODE
-50 = 380/415-3-50
JOHNSON CONTROLS
33
FORM 150.72-EG8 (115)
Wiring Lugs
LUGS
MODEL
YLAA
VOLT
HZ
ETL TB
1XX
ETL NFDS
2XX
ETL CB
3XX
0180SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(1) #6 AWG - 350 kCMIL
0210SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0241SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0286SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0320SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0360SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0400SE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0435SE
400
50
(2) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0485SE
400
50
(2) #6 - 500 kCMIL
(2) 250 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
0195HE
400
50
(1) #6 - 500 kCMIL
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
0221HE
400
50
(1) #6 - 500 kCMIL
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
0261HE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(1) #6 AWG - 350 kCMIL
0300HE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(1) #6 AWG - 350 kCMIL
0350HE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0390HE
400
50
(1) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0441HE
400
50
(2) #6 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0456HE
400
50
(2) #6 - 500 kCMIL
(2) 250 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
0516HE
400
50
(2) #6 - 500 kCMIL
(2) 250 - 500 kCMIL
(2) #3/0 AWG - 250 kCMIL
34
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Wiring Lugs (Cont'd)
LUGS
MODEL
YLAA
VOLT
HZ
ETL NFDS W/ INDIVIDUAL
SYSTEM CBS 4XX
CE NFDS
W/ MMS
CE NFDS W/
MMS & SS
0180SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
N/A
0210SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
N/A
0241SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
N/A
0286SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0320SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0360SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0400SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0435SE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0485SE
400
50
(2) 250 - 500 kCMIL
(2) 250 - 500 kCMIL
(2) 250 - 500 kCMIL
0195HE
400
50
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
0221HE
400
50
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
0261HE
400
50
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
(1) #6 AWG - 350 kCMIL
0300HE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0350HE
400
50
(1) 250 - 500 kCMIL &
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0390HE
400
50
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
(2) #3/0 AWG - 250 kCMIL
0441HE
400
50
(2) #3/0 AWG - 250 kCMIL
N/A
(2) #3/0 AWG - 250 kCMIL
0456HE
400
50
(2) 250 - 500 kCMIL
N/A
(2) 250 - 500 kCMIL
0516HE
400
50
(2) 250 - 500 kCMIL
N/A
(2) 250 - 500 kCMIL
JOHNSON CONTROLS
35
FORM 150.72-EG8 (115)
Electrical Data w/o Pumps
MODEL
VOLT HZ
YLAA
0180SE
0195HE
0210SE
0221HE
0241SE
0261HE
0286SE
0300HE
0320SE
0350HE
0360SE
0390HE
0400SE
0435SE
0485SE
0441HE
0456HE
0516HE
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
MCA
MIN
(DOES
MIN N/F DUAL
NOT
DISC
ELEM
INCLUDE
SW
FUSE
XFR
& MIN CB
AMPS)
136
150
150
136
150
150
177
200
200
128
150
150
184
250
200
184
250
200
216
250
250
222
250
250
248
400
300
256
400
300
272
400
300
281
400
300
306
400
350
327
400
350
365
600
400
314
400
350
335
400
350
378
600
400
MAX
DUAL
ELEM
FUSE
MAX
CB
150
150
225
150
200
200
250
250
300
300
300
300
350
350
400
350
350
400
COMPR 1
SYSTEM # 1
COMPR 2
COMPR 3
STD FLOW FANS
RLA
LRA
RLA
LRA
RLA
LRA
QTY
FLA
LRA
25.0
25.0
54.5
25.0
25.0
25.0
25.0
25.0
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
198
198
198
198
198
198
198
310
310
310
310
310
310
310
310
310
310
310
25.0
25.0
54.5
25.0
25.0
25.0
25.0
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
198
198
310
198
198
198
198
310
310
310
310
310
310
310
310
310
310
310
25.0
25.0
198
198
25.0
25.0
25.0
25.0
198
198
198
198
54.5
54.5
54.5
54.5
54.5
54.5
54.5
54.5
310
310
310
310
310
310
310
310
2
2
2
2
2
2
2
3
2
3
3
4
3
3
3
4
4
4
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
NOTES:
1. Reference PIN 59 for pump models.
2. Use this table along with Pump Electrical Data to determine electrical data of the unit plus the pump.
3. Does not include the Control Transformer.
PUMP ELECTRICAL DATA
PUMP MODEL
HP
RPM
36
400V-3-50HZ
FLA
LRA
A, G, L
10
3600
13.7
85.8
B, H, N
15
3600
19.7
132.0
C
3.0
3600
4.4
31.4
D, I
N/A
3600
N/A
N/A
E, J
5.0
3600
6.8
47.6
F, K
7.5
3600
10.2
131.0
M
3
1800
4.5
31.4
O
20
3600
27.2
162.4
P
N/A
1800
N/A
N/A
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Electrical Data w/o Pumps (Cont'd)
MODEL
VOLT HZ
YLAA
0180SE
0195HE
0210SE
0221HE
0241SE
0261HE
0286SE
0300HE
0320SE
0350HE
0360SE
0390HE
0400SE
0435SE
0485SE
0441HE
0456HE
0516HE
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
COMPR 1
COMPR 2
RLA
LRA
RLA
LRA
21.8
21.8
21.8
25.0
25.0
25.0
54.5
54.5
54.5
54.5
25.0
54.5
54.5
41.9
54.5
54.5
41.9
54.5
140
140
140
198
198
198
310
310
310
310
198
310
310
272
310
310
272
310
21.8
21.8
21.8
25.0
25.0
25.0
54.5
25.0
54.5
54.5
25.0
25.0
54.5
41.9
54.5
54.5
41.9
54.5
140
140
140
198
198
198
310
198
310
310
198
198
310
272
310
310
272
310
SYSTEM # 2
COMPR 3
RLA
LRA
25.0
25.0
198
198
25.0
198
41.9
54.5
272
310
41.9
54.5
272
310
STD FLOW FANS
QTY
FLA
LRA
2
2
2
2
2
2
2
2
2
3
2
2
2
3
3
3
4
4
1.4
1.4
1.4
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
3.4
3.4
3.4
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
19.0
NOTES:
1. Reference PIN 59 for pump models.
2. Use this table along with Pump Electrical Data to determine electrical data of the unit plus the pump.
3. Does not include the Control Transformer.
VOLT
400
JOHNSON CONTROLS
CONTROL TRANSFORMER LOAD
KVA
2
5.0
3
7.5
37
FORM 150.72-EG8 (115)
Wiring Diagram
38
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Wiring Diagram (Cont'd)
JOHNSON CONTROLS
39
FORM 150.72-EG8 (115)
User Control Wiring
USER CONTROL WIRING INPUTS
AA+
14
13
50
13
21
13
20
13
19
13
18
13
51
13
INTERNAL WIRING TO OPTIONAL REMOTE TEMP. RESET BOARD
FLOW SWITCH
REMOTE UNLOAD STEP 1
PWM REMOTE TEMP RESET
INTERNAL WIRING TO 2-KCR CONTROL RELAY
INTERNAL WIRING TO 1-KCR CONTROL RELAY
REMOTE START / STOP
XTBC1
LD13130
LD13130
40
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
User Control Wiring (Cont'd)
USER CONTROL WIRING OUTPUTS
Normally jumpered.
Can be used as
EMERGENCY STOP
contacts from an
external source.
140
123
32
31
30
29
28
27
26
25
24
23
5
L
2
2
2
GND
INTERNAL WIRING TO EVAPORATOR HEATER
INTERNAL WIRING TO HOT GAS SOLENOID VALVE
SYSTEM 2 ALARM DRY CONTACTS (OPEN = ALARM)
SYSTEM 1 ALARM DRY CONTACTS (OPEN = ALARM)
SYSTEM 2 RUN DRY CONTACTS (CLOSE = RUN)
SYSTEM 1 RUN DRY CONTACTS (CLOSE = RUN)
EVAPORATOR PUMP DRY CONTACTS (CLOSE = RUN
BASED ON DAILY SCHEDULE)
INTERNAL 120 VAC WIRING TO F1 FUSE
INTERNAL 120 VAC WIRING (TYPICALLY FROM CONTROL TRANSFORMER)
INTERNAL NEUTRAL WIRING
INTERNAL NEUTRAL WIRING (TYPICALLY FROM CONTROL TRANSFORMER)
INTERNAL NEUTRAL WIRING
XTBC2
LD13242
JOHNSON CONTROLS
41
FORM 150.72-EG8 (115)
Notes


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42


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JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Notes (Cont'd)
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JOHNSON CONTROLS
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43
FORM 150.72-EG8 (115)
Application Data
UNIT LOCATION
The YLAA chillers are designed for outdoor installation. When selecting a site for installation, be guided by the following conditions:
1. For outdoor locations of the unit, select a place having an adequate supply of fresh
air for the condenser.
2. Avoid locations beneath windows or between structures where normal operating
sounds may be objectionable.
3. Installation sites may be either on a roof, or at ground level. (See FOUNDATION.)
4. The condenser fans are the propeller-type, and are not recommended for use with
duct work 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" of water external
static pressure.
6. Protection against corrosive environments is available by supplying the units with
either copper fin, cured phenolic, or epoxy coating on the condenser coils. The epoxy coils should be offered with any units being installed at the seashore or where
salt spray may hit the unit.
In installations where winter operation is intended and snow accumulations are expected,
additional height must be provided to ensure normal condenser air flow.
Recommended clearances for units are given in Dimensions. When the available space is
less, the unit(s) must be equipped with the discharge pressure transducer option to permit
high pressure unloading in the event that air recirculation were to occur.
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 – 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
during installation. If the roof is “bonded”, consult the building contractor or architect for
special installation requirements. Roof installations should incorporate the use of springtype isolators to minimize the transmission of vibration into the building structure.
Ground Level Installations – It is important that the units be installed on a substantial
base that will not settle, causing strain on the liquid lines and resulting in possible leaks.
A one-piece concrete slab with footers extending below the frost line is highly recommended. Additionally, the slab should not be tied to the main building foundation as noises
will telegraph.
44
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Application Data (Cont'd)
Mounting holes (5/8" diameter) 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 unauthorized persons. Screws 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 evaporator. The inlet and outlet evaporator 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 evaporator and system piping. Additionally, a strainer (20 mesh) is recommended for use on the
INLET line to the evaporator.
Pressure gauge connections are recommended for installation in the inlet and outlet water lines. Gauges are not furnished with the unit and are to be furnished by other suppliers.
The chilled liquid lines that are exposed to outdoor ambients should be wrapped with a
supplemental heater cable and covered with insulation. As an alternative, ethylene glycol
should be added to protect against freeze-up during low ambient periods.
A flow switch is available as an accessory on all units. The flow switch (or its equivalent)
must be installed in the leaving water piping of the evaporator and must not be used to
start and stop the unit.
JOHNSON CONTROLS
45
FORM 150.72-EG8 (115)
Guide Specifications
PART 1 – GENERAL
1.01 SCOPE
A.The requirements of this Section shall conform to the general provisions of the Contract, including General and Supplementary Conditions, Conditions of the Contract,
and Contract Drawings.
B.Provide Microprocessor controlled, multiple-scroll compressor, air-cooled, liquid chillers of the scheduled capacities as shown and indicated on the Drawings, including but
not limited to:
1. Chiller package with zero Ozone Depletion Potential Refrigerant R-410A
2. Electrical power and control connections
3. Chilled water connections
4. Manufacturer Start-Up
5. Charge of refrigerant and oil.
1.02 QUALITY ASSURANCE
A.Products shall be Designed, Tested, Rated and Certified in accordance with, and Installed in compliance with applicable sections of the following Standards and Codes:
1. AHRI 550/590 – Water Chilling Packages Using the Vapor Compression Cycle
2. AHRI 370 – Sound Rating of Large Outdoor Refrigerating and Air-Conditioning
Equipment
3. ANSI/ASHRAE 15 – Safety Code for Mechanical Refrigeration
4. ANSI/ASHRAE 34 – Number Designation and Safety Classification of Refrigerants
5. ASHRAE 90.1 – Energy Standard for Buildings Except Low-Rise Residential Buildings
6. ANSI/NFPA 70 – National Electrical Code (N.E.C.)
7. ASME Boiler and Pressure Vessel Code, Section VIII, Division 1
8. OSHA – Occupational Safety and Health Act
9. Manufactured in facility registered to ISO 9001
10. Conform to Intertek Testing Services for construction of chillers and provide ETL/
cETL Listed Mark
B.Factory Run Test: Chiller shall be pressure-tested, evacuated and fully charged with refrigerant and oil, and shall be factory operational run tested with water flowing through
the vessel.
46
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
C.Chiller manufacturer shall have a factory trained and supported service organization.
D.Warranty: Manufacturer shall Warrant all equipment and material of its manufacture
against defects in workmanship and material for a period of eighteen (18) months from
date of shipment or twelve (12) months from date of start-up, whichever occurs first.
1.03 DELIVERY AND HANDLING
A.Unit shall be delivered to job site fully assembled with all interconnecting refrigerant
piping and internal wiring ready for field installation and charged with refrigerant and
oil by the Manufacturer.
B.Provide protective covering over vulnerable components for unit protection during
shipment. Fit nozzles and open ends with plastic enclosures.
C.Unit shall be stored and handled per Manufacturer’s instructions.
PART 2 - PRODUCTS
2.01 CHILLER MATERIALS AND COMPONENTS
A.General: Install and commission, as shown on the schedules and plans, factory assembled, charged, and tested air cooled scroll 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 Number Designation and Safety Classification of Refrigerants. Chiller shall include not less than
two refrigerant circuits above 50 tons (200kW), scroll 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 constructed of heavy gauge, galvanized
steel coated with baked on powder paint which, when subject to ASTM B117, 1000
hour, 5% salt spray test, yields minimum ASTM 1654 rating of “6”.
C.Operating Characteristics: Provide low and high ambient temperature control options
as required to ensure unit is capable of operation from -1°C to 46°C (30°F to 115°F)
ambient temperature. [Optional: -18°C to 52°C (0°F to 125°F) ambient.]
D.Service Isolation valves: Discharge (ball type) isolation valves factory installed per
refrigerant circuit. Includes a system high-pressure relief valve in compliance with
ASHRAE15.
E.Pressure Transducers and Readout Capability
1. Discharge Pressure Transducers: Permits unit to sense and display discharge pressure.
2. Suction Pressure Transducers: Permits unit to sense and display suction pressure.
3. High Ambient Control: Allows units to operate when the ambient temperature is
above 46°C (115°F). Includes discharge pressure transducers.
JOHNSON CONTROLS
47
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
2.02 COMPRESSORS
A.Compressors: Shall be hermetic, scroll-type, including:
1. Compliant design for axial and radial sealing
2. Refrigerant flow through the compressor with 100% suction cooled motor.
3. Large suction side free volume and oil sump to provide liquid handling capability.
4. Compressor crankcase heaters to provide extra liquid migration protection.
5. Annular discharge check valve and reverse vent assembly to provide low-pressure
drop, silent shutdown and reverse rotation protection.
6. Initial oil charge.
7. Oil level sight glass.
8. Vibration isolator mounts for compressors.
9. Brazed-type connections for fully hermetic refrigerant circuits.
10. Compressor Motor overloads capable of monitoring compressor motor current. Provides extra protection against compressor reverse rotation, phase-loss and phaseimbalance
2.03 REFRIGERANT CIRCUIT COMPONENTS
Each refrigerant circuit shall include: a discharge service ball type isolation valve, high
side pressure relief, liquid line shutoff valve with charging port, low side pressure relief
device, filter-drier, solenoid valve, sight glass with moisture indicator, thermostatic expansion valves [Option: electronic expansion valves], and flexible, closed-cell foam insulated
suction line and suction pressure transducer.
2.04 HEAT EXCHANGERS
A.Evaporator :
1. Evaporator shall be brazed-plate stainless steel construction capable of refrigerant
working pressure of 3103 kPa (450 PSIG) and liquid side pressure of 1034 kPa (150
PSIG) (Option for 2068 kPa [300 PSIG] available).
2. Brazed plate heat exchangers shall be UL listed.
3. Exterior surfaces shall be covered with 19mm (3/4”), flexible, closed cell insulation,
thermal conductivity of 0.26k ([BTU/ HR-Ft2 -°F]/in.) maximum.
4. Water nozzles shall be provided with grooves for field provided ANSI/AWWA C-606
mechanical couplings.
5. Evaporator shall include vent and drain fittings and thermostatically controlled heaters to protect to -29°C (-20°F) ambient in off-cycle.
6. A 20-mesh, serviceable wye-strainer and mechanical couplings shall be provided
for field installation on evaporator inlet prior to startup.
48
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
[Option] Evaporator shall be provided with piping extension kit and mechanical
couplings to extend liquid connection from evaporator to edge of unit. Thermal
dispersion type flow switch shall be factory installed in the evaporator outlet pipe
extension and wired to the unit control panel. Extension kit nozzle connections shall
be ANSI/AWWA C-606 (grooved) .
B.Air Cooled Condenser:
1. Coils: Condenser coils shall be constructed of a single material to avoid galvanic
corrosion due to dissimilar metals. Coils and headers are brazed as one piece. Integral sub cooling is included. Coils shall be designed for a design working pressure
of 45 bar (650 psig). Condenser coil shall be washable with potable water under 7
bar (100 psig) pressure.
2. Low Sound Fans: Shall be dynamically and statically balanced, direct drive, corrosion resistant glass fiber reinforced composite blades molded into a low noise, fullairfoil cross section, providing vertical air discharge and low sound. Each fan shall
be provided in an individual compartment to prevent crossflow during fan cycling.
Guards of heavy gauge, PVC (polyvinyl chloride) coated or galvanized steel shall
be factory installed.
3. Fan Motors: High efficiency, direct drive, 6 pole, 3 phase, insulation class “F”,
current protected, Totally Enclosed Air-Over (TEAO), rigid mounted, with double
sealed, permanently lubricated, ball bearings.
2.05 CONTROLS
A.General: Automatic start, stop, operating, and protection sequences across the range
of scheduled conditions and transients.
B.Power/Control Enclosure: Rain and dust tight NEMA 3R powder painted steel cabinet with hinged, latched, and gasket sealed door.
C.Microprocessor Control Center:
1. Automatic control of compressor start/stop, anti-coincidence and anti-recycle timers, automatic pumpdown at system shutdown, condenser fans, evaporator pump,
evaporator heater, unit alarm contacts, and chiller operation from -18°C to 52°C(0°F
to 125°F) ambient. Automatic reset to normal chiller operation after power failure.
2. Remote water temperature reset via 0-10 VDC or 4-20 mA input signal or up to two
steps of demand (load) limiting.
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/Print, Entry, Unit Options & clock, and On/Off Switch.
5. Programmable Setpoints (within Manufacturer limits): display language; chilled liquid temperature setpoint and range, remote reset temperature range, daily schedule/
holiday for start/stop, manual override for servicing, low and high ambient cutouts,
JOHNSON CONTROLS
49
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
low liquid temperature cutout, low suction pressure cutout, high discharge pressure
cutout, anti-recycle timer (compressor start cycle time), and anti-coincident timer
(delay compressor starts).
6. Display Data: Return and leaving liquid temperatures, low leaving liquid temperature cutout setting, low ambient temperature cutout setting, outdoor air temperature, English or metric data, suction pressure cutout setting, each system suction
pressure, discharge pressure (optional), liquid temperature reset via a 4-20milliamp
or 0-10 VDC input, anti-recycle timer status for each compressor, anti-coincident
system start timer condition, compressor run status, no cooling load condition, day,
date and time, daily start/stop times, holiday status, automatic or manual system
lead/lag control, lead system definition, compressor starts/operating hours (each),
status of hot gas valves, evaporator heater and fan operation, run permissive status, number of compressors running, liquid solenoid valve status, load & unload
timer status, water pump status.
7. System Safeties: Shall cause individual compressor systems to perform auto shut
down; manual reset required after the third trip in 90 minutes. System Safeties include: high discharge pressure, low suction pressure, high pressure switch, and
motor protector. Compressor motor protector shall protect against damage due to
high input current or thermal overload of windings.
8. Unit Safeties: Shall be automatic reset and cause compressors to shut down if
low ambient, low leaving chilled liquid temperature, under voltage, and flow switch
operation.
9. Alarm Contacts: Low ambient, low leaving chilled liquid temperature, low voltage,
low battery, and (per compressor circuit): high discharge pressure, and low suction
pressure.
10. BAS Communications: YORKTalk 2, BACnet MS/TP, Modbus and N2 communication capabilities are standard. (Option: LON communication via ELink Microgateway)
D.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.
2.06 POWER CONNECTION AND DISTRIBUTION
A.Power Panels:
1. NEMA 3R raintight, powder painted steel cabinets with hinged, latched, and gasket
sealed outer doors. Provide main power connection(s), control power connections,
compressor and fan motor start contactors, current overloads, and factory wiring.
2. Power supply shall enter unit at a single location, be 3 phase of scheduled voltage,
and connect to individual terminal blocks per compressor. Separate disconnecting
means and/or external branch circuit protection (by Contractor) required per applicable local or national codes.
B.Compressor, control and fan motor power wiring shall be located in an enclosed panel
or routed through liquid tight conduit.
50
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
2.07 ACCESSORIES AND OPTIONS
Some accessories and options supercede standard product features. Your Johnson Controls representative will be pleased to provide assistance.
A.Microprocessor controlled, Factory installed Across-the-Line type compressor motor
starters as standard.
B.Outdoor Ambient Temperature Control
1. Low Ambient Control: Permits unit operation to -17.8°C (0°F) ambient. Standard
unit controls to -1.1°C (30°F) ambient.
2. High Ambient Control: Permits unit operation above 46°C (115°F) ambient.
C.Power Supply Connections:
1. Single Point Power Supply: Single point Terminal Block for field connection and
interconnecting wiring to the compressors. Separate external protection must be
supplied, by others, in the incoming power wiring, which must comply with the National Electric Code and/or local codes.
2. Single Point or Multiple Point Disconnect: Single or Dual point Non-Fused
Disconnect(s) and lockable external handle (in compliance with Article 440-14 of
N.E.C.) can be supplied to isolate the unit power voltage for servicing. Separate external fusing must be supplied, by others, in the incoming power wiring, which must
comply with the National Electric Code (CE) and/or local codes.
3. Single Point Circuit Breaker: Single point Terminal Block with Circuit Breaker and
lockable external handle (in compliance with Article 440-14 of N.E.C.) can be supplied to isolate power voltage for servicing. Incoming power wiring must comply with
the National Electric Code and/or local codes.
D.Control Power Transformer: Converts unit power voltage to 120-1-60 (500 VA capacity). Factory-mounting includes primary and secondary wiring between the transformer and the control panel.
E.Power Factor Correction Capacitors: Provided to correct unit compressor factors to
a 0.90-0.95.
F. Condenser Coil Environmental Protection:
1. Post-Coated Dipped: Dipped-cured 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 100 ppm).
G.Protective Chiller Panels (Factory or Field 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 wire- mesh, coated to resist corrosion, to protect con- denser coils from incidental damage and restrict unauthorized
access to internal components.
3. Louvered Panels (full unit): Painted steel as per re- mainder of unit cabinet, to protect condenser coils from incidental damage, visually screen internal components,
and prevent unauthorized access to internal components.
JOHNSON CONTROLS
51
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
4. Louvered/Wire Panels: Louvered steel panels on external condenser coils painted
as per remainder of unit cabinet. Heavy gauge, welded wire-mesh, coated to resist
corrosion, around base of machine to restrict unauthorized access.
5. End Louver (hail guard): Louvered steel panels on external condenser coil faces
located at the ends of the chiller.
H.Thermal Dispersion Flow Switch (Factory installed and wired in piping extension
kit): Normally open, 30bar pressure rating, stainless steel 316L construction, IP67,20°C to 70°C (-4°F to 158°F) ambient rating.
I. Evaporator options:
1. Provide 1-1/2”” evaporator insulation in lieu of standard 3/4”.
J. Hot Gas By-Pass: Permits continuous, stable operation at capacities below the minimum step of unloading to as low as 5% capacity (depending on both the unit & operating conditions) by introducing an artificial load on the evaporator. Hot gas by-pass is
installed on only one refrigerant circuit.
K.Thermal Storage: Leaving chilled liquid setpoint range for charge cycle from -3.9°C to
-6.7°C (25°F to 20°F) minimum, with automatic reset of the leaving brine temperature
up to 4.4°C (40°F) above the setpoint.
L. Low Temperature Process Glycol: Leaving chilled liquid setpoint range -12°C to
10°C (10°F to 50°F)
M.Sound Reduction (Factory installed):
1. Ultra Quiet - Low speed, reduced noise fans
2. Compressor Acoustic Sound Blankets
N.Vibration Isolation (Field installed):
1. Elastomeric Isolators.
2. 1” Deflection Spring Isolators: Level adjustable, spring and cage type isolators for
mounting under the unit base rails.
3. 2” Deflection Restrained Spring Isolators: Level adjustable, restrained mounts in
rugged welded steel housing with vertical and horizontal limit stops. Housings shall
be designed to withstand a minimum 1.0g accelerated force in all directions to 50.8
mm (2”)
52
JOHNSON CONTROLS
FORM 150.72-EG8 (115)
Guide Specifications (Cont'd)
PART 3 – EXECUTION
3.01 INSTALLATION
A.General: Rig and Install in full accordance with Manufacturers requirements, Project
drawings, and Contract documents.
B.Location: Locate chiller as indicated on drawings, including cleaning and service
maintenance clearance per Manufacturer instructions. Adjust and level chiller on support structure.
C.Components: Installing Contractor shall provide and install all auxiliary devices and
accessories for fully operational chiller.
D.Electrical: Co-ordinate electrical requirements and connections for all power feeds
with Electrical Contractor (Division 16).
E.Controls: Co-ordinate all control requirements and connections with Controls Contractor.
F. Finish: Installing Contractor shall paint damaged and abraded factory finish with touchup paint matching factory finish.
JOHNSON CONTROLS
53
Printed on recycled paper
Form 150.72-EG8 (115) Supersedes: 150.72-EG8 (914)
© 2015 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA
www.johnsoncontrols.com
Issued on 1/12/2015