absorption chiller (mod a) yhau-cw double effect steam-fired

Form: 155.31-EG2.EN.UL (621)

Supersedes: 155.31-EG2.EN.UL (320)

Engineering Guide

Issue Date: 2021-06-10

YHAU-CW Double Effect Steam-FiredAbsorption Chiller (Mod A)150 ton to 2,000 ton, 527 kW to 7033 kW

2 YHAU-CW Double Effect Steam-Fired Absorption Chiller (Mod A)

ContentsContentsNomenclature................................................................................................................................................. 5Approvals......................................................................................................................................................... 6Introduction.................................................................................................................................................... 7How it works................................................................................................................................................... 8

Evaporator............................................................................................................................................ 9Absorber............................................................................................................................................... 9Two-step evaporator-absorber.......................................................................................................... 9Plate type heat exchangers.............................................................................................................. 10Parallel flow........................................................................................................................................ 11High temperature generator (HTG)................................................................................................ 11Low temperature generator (LTG).................................................................................................. 11Condenser.......................................................................................................................................... 11

Equipment overview.................................................................................................................................... 12General................................................................................................................................................ 12Construction....................................................................................................................................... 12Tube materials................................................................................................................................... 13Waterboxes........................................................................................................................................ 13Automatic crystallization prevention system................................................................................. 13Pumps................................................................................................................................................. 13Automatic purging system............................................................................................................... 13Lithium bromide and refrigerant.................................................................................................... 14Dry shipment...................................................................................................................................... 14Control valve...................................................................................................................................... 14Control panel...................................................................................................................................... 14YHAU control center.......................................................................................................................... 14Main screen........................................................................................................................................ 15Data screen........................................................................................................................................ 16Failure/alarm screen......................................................................................................................... 17Setting screen.................................................................................................................................... 18

Options and accessories............................................................................................................................. 19Application data........................................................................................................................................... 21

Location.............................................................................................................................................. 21Water circuits..................................................................................................................................... 21Sound and vibration considerations............................................................................................... 22Thermal insulation............................................................................................................................ 22Steam.................................................................................................................................................. 22Electrical data..................................................................................................................................... 23Operational range............................................................................................................................. 23

Part load performance with VFD for solution pump............................................................................... 24Nozzle arrangements.................................................................................................................................. 25

YHAU-CW Double Effect Steam-Fired Absorption Chiller (Mod A) 3

Weights and dimensions............................................................................................................................. 27Physical data................................................................................................................................................. 30Load points for EX(S)(L) and EXW(S)(L) units........................................................................................... 33Load points for EX(L) and EXW(L) units - high efficiency........................................................................ 34Load points for EXS(L) and EXWS(L) units - standard.............................................................................. 36Split shipment............................................................................................................................................... 38Process and instrumentation..................................................................................................................... 40Insulation...................................................................................................................................................... 42Water quality................................................................................................................................................ 43Chilled and cooling water system.............................................................................................................. 44Steam and drain system............................................................................................................................. 45Control panel................................................................................................................................................ 47Remote transmission................................................................................................................................... 48Electrical data............................................................................................................................................... 49Sound data.................................................................................................................................................... 50Guide specifications..................................................................................................................................... 51

General............................................................................................................................................... 51Base unit includes:................................................................................................................................... 51Base unit does not include:.................................................................................................................... 52

Construction....................................................................................................................................... 52Tube materials................................................................................................................................... 53Waterboxes........................................................................................................................................ 53Automatic crystallization prevention system................................................................................. 53Pumps................................................................................................................................................. 53Fully automatic purging system...................................................................................................... 53Lithium bromide and refrigerant.................................................................................................... 54Dry shipment..................................................................................................................................... 54Control valve...................................................................................................................................... 54Control panel..................................................................................................................................... 54Main screen........................................................................................................................................ 55Data screen........................................................................................................................................ 56Failure/alarm screen......................................................................................................................... 57Setting screen.................................................................................................................................... 58

YHAU-CW Double Effect Steam-Fired Absorption Chiller (Mod A)4

Nomenclature

5YHAU-CW Double Effect Steam-Fired Absorption Chiller (Mod A)

Approvals• GB/T 18431-2014 Steam and Hot Water Lithium Bromide Absorption Chiller• UL 1995-2011 Ed.4 + R:03Oct2014. Standard for Safety Heating and Cooling Equipment• UL 508A Industrial Control Panel• NFPA70 National Electrical Code• NFPA79 Electrical Standard for Industry Machine• Pressure vessel follows ASME

Note: Images contained in this document may represent the standard product with availableoptions.


IntroductionThe YHAU-CW double effect steam-fired absorption chiller represents the world’s most efficientcommercially available absorption technology. The unique two step design requires a remarkablylow steam input rate of 7.78 lb (3.5 kg) per ton-hour (2.22 lb (1.00 kg) per kW-hour). With today’senergy and environmental considerations, the YHAU-CW absorption chiller is the ideal choice for awide range of applications.YHAU-CW double effect steam-fired chillers are completely leak tested at the factory beforeshipping.YHAU-CW absorption chillers are equipped with sophisticated PLC based controls, making thechiller the smartest and most efficient absorption chiller on the market today.For these and similar cost saving designs, consider the field proven YHAU-CW design. In manyyears of operation, the double-effect design has proven itself in applications ranging from schoolsto refineries. Now, with state of the art controls and continual product improvement, the YHAU-CWabsorption chiller is truly without peer. When it comes to absorption technology, there’s only oneleader - Johnson Controls.


How it worksThe double effect steam-fired absorption chiller uses water as the refrigerant and lithium bromide(LiBr) as the absorbent. It is the strong affinity that these two substances have for one another thatmakes the chiller cycle work. The vapor pressure of the lithium bromide solution is lower than thevapor pressure of the refrigerant. The vapor pressure of the LiBr solution is directly related to theamount of refrigerant (water) present in the solution with the LiBr and the solution temperature.The entire absorption process occurs in almost a complete vacuum.Figure 1: YHAU-CW double steam fired chiller flow diagram


EvaporatorLiquid refrigerant enters the evaporator and is distributed over the top of the tube bundle. As therefrigerant droplets cover the outside surface of the tubes, the heat from the returning chilledwater passing through the tubes causes the refrigerant to flash from a liquid to a vapor. Thetemperature at which this happens depends on the evaporator shell pressure, which is dictated bythe absorber section of the chiller. The refrigerant vapor passes through the mist eliminators andinto the absorber section of the chiller. As the liquid refrigerant passes down through the bundleof evaporator tubes, more and more of refrigerant vaporizes. The refrigerant remaining in a liquidstate at the bottom drains into the refrigerant tank and is pumped back up to the top of the tubebundle where the process is repeated.

AbsorberConcentrated LiBr solution enters the Absorber section of the chiller and is sprayed over theabsorber tube bundle. Because the vapor pressure of the concentrated solution is very low, therefrigerant (water) vapor from the evaporator flows into the absorber and is absorbed into the LiBrsolution. This mass transfer process lowers the concentration of LiBr solution as the refrigerant(water) is absorbed into the solution. This dilution process generates heat and if not cooled wouldeventually stop as the solution temperature would rise with a corresponding rise in vapor pressure.This would be similar to closing the vanes or slowing down a centrifugal compressor on a chillerwhere the load was constant. The water flowing inside the absorber tube bundle comes fromthe cooling tower and serves to cool the LiBr solution as it flows down over the tube bundle. Thisallows the absorption process to continue and the solution becomes more diluted as it absorbsmore refrigerant vapors. When the LiBr solution reaches the bottom of the absorber section, it hasbecome too diluted (weak solution) and drains into the suction of the solution pump where it is re-concentrated.The following section describes the highly unique two-step evaporator-absorber design of theYHAU-CW steam chiller.

Two-step evaporator-absorberThe evaporator and the absorber are split into two sections. This design, similar to a series-counter-flow chiller arrangement along with the parallel flow cycle, enables lower lithium bromide solutionconcentrations. This reduces crystallization risk, reduces pressure and the potential for corrosionand improves efficiency in conjunction with other advanced components described later in thissection.The two evaporators are in series with respect to the chilled water flow through the tubes. In otherwords, the chilled water flows through the lower evaporator tubes first and then to the upperevaporator tubes. Each evaporator operates at a slightly different temperature and pressure.The refrigerant in the lower evaporator boils at a slightly higher temperature than in the upperevaporator, consequently cooling the chilled water in two steps.The two absorber sections are split as well, with the strong solution first entering the top of theuppermost absorber and flowing down through the top absorber bundle. It then flows into the topof the lower absorber section. The strong solution entering the upper absorber takes advantageof its lower vapor pressure allowing the upper evaporator to operate at a lower pressure andtemperature.When the LiBr solution enters the lower absorber section it is somewhat diluted from therefrigerant vapor that boiled off in the upper evaporator. At this lower concentration the solutionvapor pressure would normally not be sufficient to provide an evaporator pressure low enough tosatisfy the leaving chilled water design. However, the lower evaporator is the first step of the chilledwater cooling cycle, and the dilute solution’s vapor pressure is adequate to maintain the lowerevaporator at the required temperature and pressure in the lower evaporator.


The cooling water enters the lower absorber section first, keeping the vapor pressure of the weakersolution as low as possible. Both the refrigerant (water) and LiBr dispersion system are gravity fedand made of stainless steel.Figure 2: Two-step evaporator-absorber

Plate type heat exchangersThe diluted (weak) lithium bromide solution leaving the absorber section is pumped throughvarious plate type heat exchangers such as the low temperature heat exchanger, low temperaturesteam drain cooler, high temperature heat exchanger, high temperature steam drain cooler, andLTG refrigerant condensate heat exchanger, before it enters the high temperature generator andlow temperature generator sections. These plate type heat exchangers improve cycle efficiencyby preheating the dilute solution. Preheating the dilute solution reduces the load of the drivingheat source in the high temperature generator section. The concentrated solution flows out of thegenerators and back through the various heat exchangers.The relatively high temperature solution streams from the two generators and the heat of thesteam condensate is used to preheat the weak solution stream leaving the absorber.The variable frequency drive on the solution pump, and the absorber spray pump, helps achievesuperior performance at part loads through savings in steam consumption.Figure 3: Plate type heat exchangers


Parallel flowThe unique parallel flow divides the solution between the low temperature generator and the hightemperature generator sections into two parallel, balanced paths. The result is a safer and moreefficient operation at a much lower pressure than conventional series-flow designs. The varioussolution to solution plate type heat exchangers optimize efficiency by enabling effective heattransfer between the diluted (weak) and the concentrated lithium bromide solutions.

High temperature generator (HTG)The high temperature generator section is a flooded design. The steam passes through thestainless steel tubes and further heats up the preheated dilute solution from the high temperatureheat exchanger and high temperature drain cooler.The hot refrigerant vapor boiled off from the dilute solution is sent to the low temperaturegenerator. This leaves behind strong solution that is returned to the high temperature heatexchanger.

Low temperature generator (LTG)The hot refrigerant vapor from the high temperature generator heats up the dilute solution comingfrom the low temperature heat exchanger and low temperature drain cooler. The additionalrefrigerant vapor produced migrates to the condenser. The refrigerant vapor from the hightemperature generator condenses into liquid and flows to the condenser.The low temperature generator is a falling film design, ensuring superior heat transfer andenhanced life by eliminating wear and tear at the tube supports.

CondenserThe refrigerant vapor from the low temperature generator and the condensed refrigerant from thehigh temperature generator enter the condenser where they condense into a liquid state (by thecooling (condenser) water from the absorber section). The cooled refrigerant is sent to the bottomevaporator section through a U-pipe (liquid seal).

Figure 4: Condenser


Equipment overview

GeneralThe YHAU-CW Double Effect Steam-Fired Absorption Chillers are factory-packaged including theevaporator, condenser, low temperature generator, high temperature generator, absorber, pumps,automatic purging system, control center, interconnecting unit piping, and wiring.The initial charge of solution and refrigerant is supplied for each chiller. Actual shipping proceduresdepends on a number of project-specific details.Johnson Controls factory-trained, field service representatives supervise or perform the initial start-up, and provide concurrent operator instructions.

ConstructionThe chiller consists of a low temperature generator, high temperature generator, solution heatexchangers, absorber, condenser, and an evaporator. To minimize the risk of corrosion, theevaporator dispersion tray and the absorber dispersion tray are consructed using stainless steel.Each dispersion tray has two step construction and any foreign material is removed from thelithium bromide solution or the refrigerant at the first stage tray. This avoids any degradation ofdispersion performance due to clogging.

Figure 5: YHAU-CW components

The evaporator, absorber, condenser, low temperature generator, and high temperature generatorare a shell and tube construction. The steam-fired high temperature generator is designed for 150psig and water pressure tested to 195 psig according to the ASME pressure vessel requirement. Ashell-side pressure rupture disk is furnished and set to burst at 12.0 psig ± 2.0 psi.


The evaporator cycle and the absorber cycle consists of two steps (upper stage and lowerstage). This technology makes absorber solution concentration weak, extending machine life.Furthermore, this technology makes the generator solution temperature lower than the ordinarychiller, that facilitates it to use lowered steam-fired temperature as the driving heat source.The plate-type solution heat exchangers are equipped to preheat the diluted solution and achievehigher efficiency.

Tube materialsThe high temperature generator tubes are made of 0.032 in. wall stainless steel (SS32205). The lowtemperature generator and condenser tubes are made of 0.024 in. wall thickness stainless steel(SUS436LTB). The evaporator and absorber tubes are made of Low Residual Phosphorus DeoxidizedCopper (C1201), finned type with a wall thickness before finning of 0.024 in.

WaterboxesWaterboxes are removable to permit tube cleaning and replacement. Absorber and condenserwaterboxes for 360EX(S)(L) models or larger are of marine type. Water circuit tubing arereplaceable from either end of the absorption unit. All waterboxes and associated water circuitnozzles and tube bundles are designed for 150 psig working pressure and 188 psig water tested.Vent and drain connections are provided on each waterbox. The high temperature generator waterbox is designed for 150 psig and water pressure tested to 195 psig according to the ASME pressurevessel requirement. All the water connections are equipped with ANSI flanges. Mating flanges arenot included. The inside of the waterboxes and the waterbox covers are coated with epoxy paint.

Automatic crystallization prevention systemThe YHAU-CW Chiller is built with an anti-crystallization system. The absorber and the evaporatorare located side by side in the same shell and separated by the eliminator. When the concentrationof lithium bromide in the chiller goes up, the water level at the evaporator increases andautomatically spills over to the absorber. This causes the concentration rate of the solution at theabsorber to go down.The refrigerant blow solenoid valve opens automatically to dilute the solution to preventcrystallization, when the solution temperature, pressure, or concentration of LiBr rises to eachprotection point and the chiller-heater runs load limitation.

PumpsSolution and refrigerant pumps are hermetically sealed, self-lubricating, totally enclosed, factory-mounted, wired, and tested. Motor windings are not exposed to lithium bromide or water. Thesuction and discharge connections for each pump are fully welded to the unit piping to minimizethe opportunity for leaks. Pumps are designed to operate for a total of 60,000 hours. The parts inthe pumps such as bearings and sealing gaskets are to be replaced every 20,000 hours.

Automatic purging systemThe chiller is equipped with a purging system to remove non-condensable gases from the unitduring operation. Non-condensables are collected by an eductor and accumulated in the purgetank. The chiller can dictate the pressure increase in the purge tank and automatically remove thenon-condensable gas through the operation of an electric vacuum pump.The purge pump is an oil rotary two stage design, and is furnished complete with a motor, and allrequired accessories. The purge pump is shipped mounted on the chiller and the connecting hoseis factory installed. The purge pump oil is charged before delivery.


Lithium bromide and refrigerantLithium bromide must contain lithium molybdate corrosion inhibitor to minimize the rate of ferrousmetal corrosion on both the solution and refrigerant sides of the unit. The solution and deionizedrefrigerant water are kept in barrels and shipped with the chiller. They are then charged at the fieldduring the commissioning.

Dry shipmentThe solution and refrigerant water are kept in the barrels and shipped with the chiller. They arecharged in the field during the commissioning. The chiller is charged with N2 to 4.4 psig during thedelivery.

Control valveSteam-fired chillers are designed with a steam control valve for CW model or a steam drain controlvalve for CWN and CWL model, with the actuator motor. The steam control valve or steam draincontrol valve assembly is capable of modulating steam flow continuously from approximately 20%to 100% of the maximum design chiller capacity into the chiller.The actuator motor is powered from the chiller control panel with the actuator motor positioncontrolled through a 4-20 mA DC control signal.The steam control valve is not in the factory scope and must be sourced by your local JCI branch,according to engineering specifications. The steam drain control valve is in the factory scope and ismounted on the chiller before delivery.

Control panelEach unit is furnished complete with a factory mounted and pre-wired control system. The controlpanel enclosure is equipped with a hinged access door with lock and key. The protection rating ofthe control panel is equivalent to IP42. All temperature sensors and other control devices necessaryto sense unit operating parameters are factory mounted and wired to panel. The control panelmust include a touch panel showing all system parameters in various languages with numeric datain metric or imperial units.The operating program is stored in non-volatile memory (SRAM) to eliminate chiller failure due toAC power failure.Capacity control - The control panel automatically controls the input steam flow rate to maintainthe programmed leaving chilled water setpoint for cooling loads ranging from approximately 20%to 100% of design. The input steam flow rate can also be manually adjusted from the control panelto any setting between minimum and maximum, when automatic operation is not required andwhen steam input is not being inhibited by a specific operating condition.

YHAU control centerThe YHAU-CW Control Center, furnished as standard on each chiller, provides the ultimate inefficiency, monitoring, data recording, chiller protection and operating ease. The control centeris a factory-mounted, wired and tested state-of-the-art microprocessor based control system forlithium bromide absorption chillers. The panel is configured with a color display with keys that areintegrated into the display, which are redefined with one keystroke based on the screen displayedat that time. This development makes chiller operation quicker and easier. A single button revealsa wide array of information on a large, full-color illustration of the appropriate component, whichmakes information easier to interpret. This is all mounted in the middle of a keypad interface andinstalled in a locked enclosure.


The LCD allows graphic animated display of the chiller, chiller sub-systems and system parameters;this allows the presentation of several operating parameters at once. In addition, the operator mayview a graphical representation of the historical operation of the chiller and the present operation.A Status Bar is displayed at all times on all screens.The panel interface is available in various languages as standard and can be changed withouthaving to turn off the chiller. Data can be displayed in imperial or metric units plus keypad entry ofsetpoints to 0.1 increments.Security access is provided to prevent unauthorized changes to setpoints. This is accomplished withthree different levels of access and passwords for each level. There are certain screens, displayedvalues, programmable setpoints and manual controls not shown that are for servicing the chiller.The following listing describes the various system screens and subscreens, and what informationthey provide.

Main screenThe Main Screen displays equipment status (chiller start/stop, operating, pumps ON/OFF, purgepump ON/OFF, and chilled, and cooling water pumps ON/OFF). Also displayed is the operatingstatus of the various modes of chiller operation.Figure 6: Main screen


Data screenThe data screen displays values showing temperatures, operating hours, operating frequency, datatrends and a history of failures, alarms, and time based temperature trends.Figure 7: Data screen


Failure/alarm screenThis screen displays failure indications (time-outs, operation interlock, overcooled refrigerant, overand under temperatures, and problems with the unit's pumps) and system alarms.Figure 8: Failure/alarm screen


Setting screenThis screen displays the following control parameters:

• Setting method

- Remote setting base and differential

• Valve operation

- Control valve mode auto/manual

• Operation switch

- Pump operation- Forced dilution- Purge mode auto/manual

• Unit selection

- Metric and imperial unit selection is available

• Language

- Japanese, English, German, Chinese and more languages are available

• Date and time parameters

Figure 9: Setting screen


Options and accessoriesOptional tubes – A copper C1201, CuNi (90/10), SUS436L, SUS316L, SUS304, copper and titaniumoptions for absorber-condenser tubing, and evaporator is available. However, the chiller rating maychange with this option. Certified selection is issued by Johnson Controls engineering department.Price additions for nonstandard tube materials or wall thickness is provided on a job specific basis.Wet shipment - The solution and refrigerant is charged at the factory and used for chillertesting. They are discharged and shipped in barrels with the chiller and charged again duringcommissioning. The chiller is charged with N2 to 4.4 psig on delivery.Shipment with charge – The solution and refrigerant are charged at the factory and used forchiller testing. They stay in the chiller during delivery. The chiller is charged with N2 to 4.4 psig ondelivery.Split shipment – For tight rigging jobs, it is possible to ship the unit in two pieces – the uppersection (evaporator, absorber, condenser, low temperature generator, and high temperaturegenerator) and the lower section (solution heat exchangers and base frame). The solution andrefrigerant is shipped in barrels together with the chiller and is charged at the job site.Long term storage - The solution and refrigerant water are stored in the barrels and ship pedwith the chiller. The shell side of the chiller is charged with N2 to 4.4 psig and the pressure gauge ismarked. The tube side and waterbox are sealed and the pressure gauge is installed. The tube sideof the chiller is charged with N2 to 4.4 psig and the pressure gauge is marked. The drying agent isthen placed in the control panel.Cold surface insulation – Elastomeric foam insulation on cold surfaces is applied at the factory asan option.Isolation pads – Four pads of 0.39 in. thick NBR isolation material are provided as an option.Pump isolation valves: An isolation valve for the solution pump and the refrigerant pump isavailable as an option.Chilled water pressure 300 psig – A chilled water design working pressure 300 psig option isavailable with marine type waterbox.Cooling water pressure 300 psig – A cooling water design working pressure 300 psig option isavailable with a marine type waterbox.Cooling water pressure differential switch – The chilled water pressure differential switch isincluded in the base unit. Pressure differential switches for the condenser water are provided as anoption when it is required.IP54 (indoor use) – Protection rating for control panel, electrical component and pumps isequivalent to IP54. Water-resistant flexible conduit is used for chiller wiring. If the plant room willever get below 50°F you must have the cold ambient option.Outdoor installation – The protection rating for the control panel, the electrical components,and pumps is equivalent to IP54. Water–resistant flexible conduit is used for chiller wiring. Theminimum allowable temperature for outdoor installation is 32°F, provided the chiller includes thecold ambient option. Outdoor installations will be considered on a case-by-case basis.Hot and cold insulation and metal jacketing is to be done by the customer at the job site.Band heating for refrigerant piping is done at the factory.Factory testing – Factory testing is only available with single piece equipment.

Factory performance test option not 3rd

party witnessed – Provides a full load performance testand a signed report of capacity and performance.

Note: Full load single point test. Additional part load points or special testing requirements willbe addressed by marketing on a project specific basis.


Customer witness factory test – Permits a customer witnessed factory performance test of agiven chiller at design full load conditions. The time of the test will be based on the manufacturingschedule and will be confirmed by the factory.Remote interface option – This option permits the use of 0 V to 10 V remote signals to limit controlvalve opening.Junction box for separate installation of control panel – A junction box is furnished when thecontrol panel is to be installed at a remote location away from the unit. The cables that connect thecontrol panel to the junction box are not in factory scope.Inverter – An inverter for the solution pump is optional.Modbus RTU communication – Instead of the standard Modbus TCP communication (throughan Ethernet port) a Modbus RTU communication (through an RS485 port) is provided as an optionwhen it is required.Low chilled water supply – The chiller can supply 33.8°F to 39.2°F of the chilled water constantlywithout freezing the refrigerant.VSD control signal for chilled water pump – For this option one additional temperaturecontroller (SDC35) must be added, it outputs 4 mA to 20mA signal according to chilled water inlettemperature. The chilled water flow changes from 50% to 100%.VSD control signal for cooling water pump – This option outputs 4 mA to 20 mA signal accordingto the HTG temperature, HTG pressure and HTG solution concentration. The cooling water flowchanges from 50% to 100%.


Application dataThe following section is a guide in the application and installation of YHAU-CW AbsorptionSteam Chillers. While this guide is directed toward normal water-chilling applications, your local Johnson Controls sales representative can provide complete recommendations on other types ofapplications.

LocationYHAU-CW units make very little noise or vibration and can be generally located at any level in abuilding where the construction supports the total system operating weight. The unit site must bea floor, mounting pad, or foundation that is level and capable of supporting the operating weightof the YHAU-CW chiller. The YHAU-CW unit operates correctly and produces maximum output onlyif it is installed level within 1/1000 of the unit length in the lengthwise direction, and 1/1000 of unitwidth in the widthwise direction.The system location must provide sufficient space around the unit to facilitate tube removal, ifrequired. If a door or other large opening is conveniently located opposite one end of the system,the tubes can be extracted and replaced through these openings. Allow sufficient clearance on theremaining sides of the unit for necessary access and maintenance.Standard absorption chillers are not suitable for outdoor installation. The machine room must beenclosed, with adequate lighting, and correctly ventilated to keep its temperature no higher than104°F and no lower than 50°F.

Water circuitsFlow rate – For normal fluid chilling duty, the evaporator and absorber/condenser flow rates arepermitted at water velocity levels in the heat exchangers tubes of up to 10.9 ft/s.Under variable chilled fluid and cooling fluid flow conditions, special attention needs to be paid tothe rate of change of flow rate with time and the minimum/maximum velocities through the tubes.The chilled water and cooling water flow accept 50% to 120% designed flow. The acceptable chilledwater temperature variation is within ± 0.9°F per minute; the acceptable cooling water temperaturevariation is 0.9°F per minuteApplications involving chilled and cooling fluid flow rates, that vary by more than +20% from designrequire special considerations on a case by case basis.Water quality – The practical and economical application of liquid chillers requires that thequality of the water supply for the evaporator and the absorber/condenser be analyzed by awater treatment specialist. Water quality can affect the performance of any chiller throughcorrosion, deposits of heat-resistant scale, sedimentation, or organic growth. These will affectchiller performance and increase operating and maintenance costs. Normally, performance maybe maintained by corrective water treatment and periodic cleaning of tubes. If water conditionsexist which cannot be corrected by correct water treatment, it may be necessary to provide a largerallowance for fouling, or specify special material of construction.General water piping – All chilled water and cooling water piping must be designed and installedin accordance with accepted piping practice. Chilled water and cooling water pumps must belocated to discharge through the YHAU-CW unit to ensure positive pressure and flow through theunit. Piping must include offsets to provide flexibility and must be arranged to prevent drainage ofwater from the cooler and condenser when the pumps are shut down.Piping should be adequately supported and braced independent of the chiller to avoid imposingstrain on chiller components. Hangers must allow for alignment of the pipe. Isolators in the pipingand in the hangers are required to achieve sound and vibration control.


Convenience considerations – With consideration given to facilitating the performance of routinemaintenance work, some or all of the following steps can be taken by the purchaser.

• Evaporator, absorber, and condenser waterboxes are equipped with plugged vent and drainconnections.

• If required, vent and drain valves can be installed with or without piping to an open drain.• Pressure gauges with stopcocks, and stop valves, can be installed in the inlets and outlet of

the cooling and chilled water lines as close as possible to the chiller.• An overhead monorail or beam can be used to facilitate servicing.

Connections – The standard unit is designed for 150 psig working pressure in both the chilled andcooling water circuits. The connections (water nozzles) to these circuits are furnished in accordancewith ANSI flanges. Piping must be arranged for ease of disassembly at the unit for performance ofroutine maintenance such as tube cleaning. All water piping must be thoroughly cleaned of all dirtand debris before final connections are made to the YHAU-CW unit.Chilled water – The chilled water circuit uses a differential pressure switch as standard. Factorymounted in the water nozzle connection and wired to the chiller control panel. A water strainer witha 10 mesh, must be field-installed in the chilled water inlet line as close as possible to the chiller. Iflocated close enough to the chiller, the chilled water pump can be protected by the same strainer.The flow sensor and strainer ensure chilled water flow during unit operation. The loss or severereduction of water flow could seriously impair the YHAU-CW unit performance or even result intube freeze up.Cooling water – Like the chilled water circuit, the cooling water circuit requires a means ofproving flow. Low flow protection is provided by an optional differential pressure switch mountedin the water nozzle connection and wired to the chiller control panel.The YHAU-CW chiller is engineered for maximum efficiency at both design and part load operationby taking advantage of the colder cooling water temperatures that naturally occur in the wintermonths. In its standard configuration, YHAU-CW absorbers can tolerate entering cooling watertemperatures as low as 68°F. Because the unit flow rates must be maintained, the recommendedmethod of cooling water temperature control is a three-way mixing valve.

Sound and vibration considerationsAs the YHAU-CW unit generates very little sound (see Sound data) or vibration, vibrationeliminating mounts are not required. However, when the machine is installed where even mildnoise is a problem, mounts or pads must be used. The use of anchoring bolts on the machine legsis normally necessary.

Thermal insulationYHAU-CW units require thermal insulation on both hot and cold surfaces in order to achievemaximum efficiency and prevent sweating. Johnson Controls does not provide this thermalinsulation.

SteamGeneral – The YHAU-CW unit is nominally rated for and saturated steam with minimal superheat,and a pressure of 116 psig. The inlet steam must not have a temperature higher than 374°F andcannot have a saturation pressure higher than 150 psig. The superheated temperature should notexceed 18°F.Pressure – As a lower steam saturation pressure corresponds to a lower temperature in thegenerator, a YHAU-CW chiller’s available capacity varies with the steam pressures at the steamvalve.


Piping – Beginning at the steam supply, a steam separator must be installed to ensure the unitreceives only dry steam. A steam trap below the separator will allow draining of only condensate.Beyond the separator, a 60 mesh strainer removes foreign matter from the steam. A regulator isonly necessary if the steam supply pressure to the unit will exceed 150 psig. The pressure reliefvalve should be set to open at 150 psig. The Johnson Controls' supplied steam for the steampressure is 116 psig and higher than 116 psig. It must be no further than 196 in. from the hightemperature generator steam inlet flange in order to minimize the pressure drop from the valveexit to the generator inlet. Alternatively, the steam drain control valve is mounted on the chillerbefore delivery.The drain cooler installed on the unit effectively eliminates the need for an additional condensatecooler or a steam trap. The drain solenoid valve is a factory installed device to ensure zero steamflow through unit during shutdown.All steam piping must be adequately supported and braced independently of the chiller. Thesupport system must account for the expansion and contraction of steam piping, avoiding theimposition of strain on the chiller components.Control valve sizing – Control valves are sized for each job based on the chiller cooling capacity.During start-up, Johnson Controls technicians establish the minimum load steam control valveor steam drain control valve position, approximately 20%, and set the limit switch accordingly,eliminating possible problems at start up.

Electrical dataUnit electrical data begins on Electrical data. Total kW includes power requirements for the systemsolution and refrigerant pumps. All models have one solution pump, one solution spray pump andone refrigerant pump.

Operational rangeParameter Allowable ranges OptionalChilled water in 44.6°F to 77°F 39.2°F to 44.6°FChilled water out 39.2°F to 60.8°F 33.8°F to 39.2°FCooling water in 68°F to 98.6°F

Cooling water out 77°F to 107.6°F

Steam inlet pressure 29 psig to 145 psig

Condensate outlet ~140°F


Part load performance with VFD for solution pumpFigure 10: Part load performance with VFD for solution pump


Nozzle arrangementsNozzle location

Chilled water (CHW) Cooling water (COW) Steam Steam drainYHAU-CWInlet Outlet Inlet Outlet Inlet Outlet

Odd pass B Odd pass B150-300EX(S)(L) A

Even pass AA

Even pass AB B

Odd pass A Odd pass A360-800EX(S)(L)900-1100EXW(S)(L)1200-1600EXW3(S)(L)1000-2000EXW4(S)(L)

BEven pass B

BEven pass B

B B

Note: These images are representations of nozzle arrangements. Reference generalarrangement drawings for detailed nozzle locations for each specific unit.

Figure 11: YHAU-CW-150-300EX(S)(L) nozzle locations

Item Description1 Chilled water outlet (odd pass)2 Cooling water outlet (odd pass)3 Steam inlet4 Drain outlet5 Cooling water outlet (even pass)6 Chilled water outlet (even pass)7 Cooling water inlet8 Chilled water inlet


Figure 12: YHAU-CW 360-800EX(S)(L), 900-1100EXW(S)(L), 1200-1600EXW3(S)(L),1000-2000EXW4(S)(L) nozzle locations

Item Description1 Chilled water outlet (even pass)2 Cooling water outlet (even pass)3 Steam inlet4 Drain outlet5 Cooling water inlet6 Chilled water inlet7 Cooling water outlet (odd pass)8 Chilled water outlet (odd pass)


Weights and dimensionsNote: All of the data in this section is for reference only. To get the actual data, see the ratingsheet.

Table 1: High efficiency weights and dimensionsDimension ft (m) Weight lb (ton)

ModelYHAU-CW Length

ft (m)Widthft (m)

Heightft (m)

Tube extracting spaceft (m)

Maximum shippinglb (ton)

Operationlb (ton)

Emergency (filledwith water)

lb (ton)

150EX(L)9.84

(3)

7.55

(2.3)

8.2

(2.5)

6.56

(2)

12,566

(5.7)

15,873

(7.2)

23,149

(10.5)

180EX(L)11.15

(3.4)

7.55

(2.3)

8.2

(2.5)

8.53

(2.6)

14,771

(6.7)

18,739

(8.5)

27,999

(12.7)

240EX(L)13.12

(4.0)

7.55

(2.3)

8.2

(2.5)

10.5

(3.2)

17,196

(7.8)

21,826

(9.9)

33,510

(15.2)

300EX(L)15.75

(4.8)

7.55

(2.3)

8.2

(2.5)

13.12

(4)

19,621

(8.9)

25,574

(11.6)

39,904

(18.1)

360EX(L)19.03

(5.8)

7.87

(2.4)

8.2

(2.5)

16.4

(5)

26,676

(12.1)

34,833

(15.8)

57,541

(26.1)

400EX(L)19.03

(5.8)

7.87

(2.4)

8.2

(2.5)

16.4

(5)

26,676

(12.1)

34,833

(15.8)

57,541

(26.1)

450EX(L)15.75

(4.8)

8.2

(2.5)

10.17

(3.1)

13.12

(4)

30,203

(13.7)

37,699

(17.1)

59,525

(27)

500EX(L)17.39

(5.3)

8.2

(2.5)

10.17

(3.1)

14.76

(4.5)

34,172

(15.5)

44,533

(20.2)

67,461

(30.6)

560EX(L)19.03

(5.8)

8.2

(2.5)

10.17

(3.1)

16.4

(5)

36,817

(16.7)

48,061

(21.8)

75,398

(34.2)

600EX(L)21

(6.4)

8.2

(2.5)

10.17

(3.1)

18.04

(5.5)

41,447

(18.8)

53,572

(24.3)

83,335

(37.8)

700EX(L)23.62

(7.2)

8.2

(2.5)

10.17

(3.1)

20.67

(6.3)

45,415

(20.6)

59,304

(26.9)

93,476

(42.4)

800EX(L)25.91

(7.9)

8.2

(2.5)

10.17

(3.1)

22.97

(7)

50,706

(23)

66,359

(30.1)

104,279

(47.3)

900EXW(L)21.65

(6.6)

9.51

(2.9)

10.5

(3.2)

18.7

(5.7)

54,895

(24.9)

73,855

(33.5)

111,113

(50.4)

1000EXW(L)23.62

(7.2)

9.51

(2.9)

10.5

(3.2)

20.67

(6.3)

59,745

(27.1)

80,469

(36.5)

121,475

(55.1)

1100EXW(L)25.91

(7.9)

9.51

(2.9)

10.5

(3.2)

22.97

(7)

64,595

(29.3)

86,862

(39.4)

130,293

(59.1)

1200EXW3(L)26.24

(8.0)

10.17

(3.1)

10.83

(3.3)

22.97

(7)

70,989

(32.2)

97,224

(44.1)

155,646

(70.6)

1300EXW3(L)27.88

(8.5)

10.17

(3.1)

10.83

(3.3)

24.61

(7.5)

76,059

(34.5)

103,838

(47.1)

166,229

(75.4)

1400EXW3(L)29.86

(9.1)

10.17

(3.1)

10.83

(3.3)

26.25

(8)

81,571

(37)

110,452

(50.1)

176,590

(80.1)

1500EXW3(L)31.5

(9.6)

10.17

(3.1)

10.83

(3.3)

27.89

(8.5)

87,083

(39.5)

117,286

(53.2)

187,613

(85.1)

1600EXW3(L)33.14

(10.1)

10.17

(3.1)

10.83

(3.3)

29.53

(9)

92,815

(42.1)

123,900

(56.2)

198,196

(89.9)

1000EXW4(L)20.01

(6.1)

10.17

(3.1)

12.8

(3.9)

16.4

(5)

64,595

(29.3)

88,846

(40.3)

132,498

(60.1)

1120EXW4(L)22.30

(6.8)

10.17

(3.1)

12.8

(3.9)

18.7

(5.7)

74,957

(34)

99,649

(45.2)

149,253

(67.7)

1250EXW4(L)24.27

(7.4)

10.17

(3.1)

12.8

(3.9)

20.67

(6.3)

78,485

(35.6)

107,806

(48.9)

162,481

(73.7)

1400EXW4(L)26.57

(8.1)

10.17

(3.1)

12.8

(3.9)

22.97

(7)

85,760

(38.9)

117,506

(53.3)

178,574

(81)

1500EXW4(L)28.54

(8.7)

10.17

(3.1)

12.8

(3.9)

24.61

(7.5)

91,051

(41.3)

124,561

(56.5)

190,038

(86.2)

1600EXW4(L)30.18

(9.2)

10.17

(3.1)

12.8

(3.9)

26.25

(8)

96,342

(43.7)

131,836

(59.8)

201,503

(91.4)


Table 1: High efficiency weights and dimensionsDimension ft (m) Weight lb (ton)

ModelYHAU-CW Length

ft (m)Widthft (m)

Heightft (m)


Maximum shippinglb (ton)

Operationlb (ton)


lb (ton)

1680EXW4(L)31.82

(9.7)

10.17

(3.1)

12.8

(3.9)

27.89

(8.5)

98,326

(44.6)

135,584

(61.5)

209,660

(95.1)

1800EXW4(L)33.46

(10.2)

10.17

(3.1)

12.8

(3.9)

29.53

(9)

103,617

(47)

142,639

(64.7)

221,124

(100.3)

1900EXW4(L)35.1

(10.7)

10.17

(3.1)

12.8

(3.9)

31.17

(9.5)

109,129

(49.5)

150,135

(68.1)

232,808

(105.6)

2000EXW4(L)36.75

(11.2)

10.17

(3.1)

12.8

(3.9)

32.81

(10)

114,640

(52)

157,410

(71.4)

244,493

(110.9)

Note: Refer to the general arrangement drawings for specific center of gravity locations anddata.

Table 2: Standard efficiency weights and dimensionsDimension ft (m) Weight lb (tons)

YHAU-CW Lengthft (m)

Widthft (m)

Heightft (m)


Maximumshippinglb (ton)

Operationlb (ton)


lb (ton)

150EXS(L)9.84

(3)

7.55

(2.3)

8.2

(2.5)

6.56

(2)

11,244

(5.1)

14,771

(6.7)

20,944

(9.5)

180EXS(L)11.15

(3.4)

7.55

(2.3)

8.2

(2.5)

8.53

(2.6)

13,228

(6)

17,417

(7.9)

25,353

(11.5)

240EXS(L)13.12

(4.0)

7.55

(2.3)

8.2

(2.5)

10.5

(3.2)

15,212

(6.9)

20,283

(9.2)

30,644

(13.9)

300EXS(L)15.75

(4.8)

7.55

(2.3)

8.2

(2.5)

13.12

(4)

16,755

(7.6)

23,589

(10.7)

36,156

(16.4)

360EXS(L)19.03

(5.8)

7.87

(2.4)

8.2

(2.5)

16.4

(5)

25,574

(11.6)

33,290

(15.1)

54,454

(24.7)

400EXS(L)19.03

(5.8)

7.87

(2.4)

8.2

(2.5)

16.4

(5)

25,574

(11.6)

33,290

(15.1)

54,454

(24.7)

450EXS(L)15.75

(4.8)

8.2

(2.5)

10.17

(3.1)

13.12

(4)

27,117

(12.3)

36,156

(16.4)

57,982

(26.3)

500EXS(L)17.39

(5.3)

8.2

(2.5)

10.17

(3.1)

14.76

(4.5)

32,849

(14.9)

41,006

(18.6)

68,123

(30.9)

560EXS(L)19.03

(5.8)

8.2

(2.5)

10.17

(3.1)

16.4

(5)

34,613

(15.7)

45,856

(20.8)

73,193

(33.2)

600EXS21

(6.4)

8.2

(2.5)

10.17

(3.1)

18.04

(5.5)

39,242

(17.8)

50,927

(23.1)

80,689

(36.6)

700EXS23.62

(7.2)

8.2

(2.5)

10.17

(3.1)

20.67

(6.3)

44,754

(20.3)

56,438

(25.6)

93,476

(42.4)

800EXS(L)25.91

(7.9)

8.2

(2.5)

10.17

(3.1)

22.97

(7)

50,486

(22.9)

62,832

(28.5)

105,601

(47.9)

900EXWS(L)21.65

(6.6)

9.51

(2.9)

10.5

(3.2)

18.7

(5.7)

54,454

(24.7)

70,327

(31.9)

113,979

(51.7)

1000EXWS(L)23.62

(7.2)

9.51

(2.9)

10.5

(3.2)

20.67

(6.3)

58,863

(26.7)

76,059

(34.5)

124,782

(56.6)

1100EXWS(L)25.91

(7.9)

9.51

(2.9)

10.5

(3.2)

22.97

(7)

61,068

(27.7)

82,453

(37.4)

123,679

(56.1)

1200EXW3S(L)26.24

(8.0)

10.17

(3.1)

10.83

(3.3)

22.97

(7)

67,241

(30.5)

92,374

(41.9)

147,710

(67)

1300EXW3S(L)27.88

(8.5)

10.17

(3.1)

10.83

(3.3)

24.61

(7.5)

72,312

(32.8)

98,767

(44.8)

158,071

(71.7)

1400EXW3S(L)29.86

(9.1)

10.17

(3.1)

10.83

(3.3)

26.25

(8)

77,382

(35.1)

105,160

(47.7)

168,213

(76.3)

1500EXW3S(L)31.5

(9.6)

10.17

(3.1)

10.83

(3.3)

27.89

(8.5)

82,673

(37.5)

111,333

(50.5)

178,134

(80.8)

1600EXW3S(L)33.14

(10.1)

10.17

(3.1)

10.83

(3.3)

29.53

(9)

87,964

(39.9)

117,727

(53.4)

188,275

(85.4)


Table 2: Standard efficiency weights and dimensionsDimension ft (m) Weight lb (tons)


Widthft (m)

Heightft (m)


Maximumshippinglb (ton)

Operationlb (ton)


lb (ton)

1000EXW4S(L)20.01

(6.1)

10.17

(3.1)

12.8

(3.9)

16.4

(5)

61,950

(28.1)

85,319

(38.7)

128,970

(58.5)

1100EXW4S(L)22.30

(6.8)

10.17

(3.1)

12.8

(3.9)

18.7

(5.7)

69,446

(31.5)

95,240

(43.2)

145,064

(65.8)

1250EXW4S(L)24.27

(7.4)

10.17

(3.1)

12.8

(3.9)

20.67

(6.3)

75,178

(34.1)

103,397

(46.9)

158,071

(71.7)

1400EXW4S(L)26.57

(8.1)

10.17

(3.1)

12.8

(3.9)

22.97

(7)

82,012

(37.2)

112,656

(51.1)

173,724

(78.8)

1500EXW4S(L)28.54

(8.7)

10.17

(3.1)

12.8

(3.9)

24.61

(7.5)

87,303

(39.6)

119,491

(54.2)

184,968

(83.9)

1600EXW4S(L)30.18

(9.2)

10.17

(3.1)

12.8

(3.9)

26.25

(8)

92,153

(41.8)

126,325

(57.3)

195,991

(88.9)

1680EXW4S(L)31.82

(9.7)

10.17

(3.1)

12.8

(3.9)

27.89

(8.5)

93,696

(42.5)

129,411

(58.7)

203,487

(92.3)

1800EXW4S(L)33.46

(10.2)

10.17

(3.1)

12.8

(3.9)

29.53

(9)

98,767

(44.8)

136,246

(61.8)

214,730

(97.4)

1900EXW4S(L)35.1

(10.7)

10.17

(3.1)

12.8

(3.9)

31.17

(9.5)

103,617

(47)

143,080

(64.9)

225,753

(102.4)

2000EXW4S(L)36.75

(11.2)

10.17

(3.1)

12.8

(3.9)

32.81

(10)

108,688

(49.3)

149,694

(67.9)

236,776

(107.4)

Note: Refer to the general arrangement drawings for specific center of gravity locations anddata.


Physical dataTable 3: High efficiency physical data

Water volume

YHAU-CW Cold insulation areaf2 (m2)

Hot insulation areaf2 (m2)

Radiation heat loss(with insulation,ambient temp.

50°F) (kW)

Radiation heat loss(without insulation,

ambient temp.50°F) (kW)

Chilled water(evap)f3 (m3)

Cooling water(abs and cond)

f3 (m3)

Steam(gen)f3 (m3)

150EX(L)86.11

(8)

204.51

(19)1 9

7.42

(0.21)

11.65

(0.33)

1.41

(0.04)

180EX(L)107.64

(10)

226.04

(21)1 11

8.83

(0.25)

13.77

(0.39)

1.41

(0.04)

240EX(L)129.17

(12)

258.33

(24)1 15

10.59

(0.3)

16.24

(0.46)

1.41

(0.04)

300EX(L)150.69

(14)

301.39

(28)2 19

12.71

(0.36)

19.78

(0.56)

2.12

(0.06)

360EX(L)150.69

(14)

355.21

(33)2 22

16.24

(0.46)

29.31

(0.83)

2.47

(0.07)

400EX(L)150.69

(14)

355.21

(33)2 22

16.24

(0.46)

29.31

(0.83)

2.47

(0.07)

450EX(L)150.69

(14)

355.21

(33)3 28

19.42

(0.55)

41.32

(1.17)

2.83

(0.08)

500EX(L)172.22

(16)

387.5

(36)3 31

21.19

(0.6)

44.14

(1.25)

3.18

(0.09)

560EX(L)182.99

(17)

419.79

(39)3 35

22.95

(0.65)

49.09

(1.39)

3.53

(0.1)

600EX(L)204.51

(19)

430.56

(40)4 37

25.07

(0.71)

52.27

(1.48)

3.88

(0.11)

700EX(L)215.28

(20)

441.32

(41)4 43

27.9

(0.79)

56.86

(1.61)

4.59

(0.13)

800EX(L)247.57

(23)

495.14

(46)5 50

31.08

(0.88)

66.39

(1.88)

5.3

(0.15)

900EXW(L)344.45

(32)

538.2

(50)5 56

43.79

(1.24)

83.34

(2.36)

6

(0.17)

1000EXW(L)376.74

(35)

570.49

(53)6 62

47.32

(1.34)

88.99

(2.52)

6.71

(0.19)

1100EXW(L)409.03

(38)

624.31

(58)7 68

51.56

(1.46)

95.7

(2.71)

7.42

(0.21)

1200EXW3(L)462.85

(43)

688.89

(64)7 74

59.33

(1.68)

115.83

(3.28)

8.48

(0.24)

1300EXW3(L)495.14

(46)

753.47

(70)8 80

63.57

(1.8)

120.07

(3.4)

9.18

(0.26)

1400EXW3(L)516.67

(48)

818.06

(76)8 87

66.74

(1.89)

125.37

(3.55)

9.89

(0.28)

1500EXW3(L)548.96

(51)

882.64

(82)9 93

70.28

(1.99)

130.66

(3.7)

10.24

(0.29)

1600EXW3(L)570.49

(53)

947.22

(88)10 99

73.45

(2.08)

135.96

(3.85)

10.95

(0.31)

1000EXW4(L)365.97

(34)

430.56

(40)6 62

73.81

(2.09)

124.66

(3.53)

6.71

(0.19)

1120EXW4(L)398.26

(37)

484.38

(45)7 69

79.46

(2.25)

134.2

(3.8)

7.42

(0.21)

1250EXW4(L)430.56

(40)

527.43

(49)7 77

84.76

(2.4)

142.32

(4.03)

8.12

(0.23)

1400EXW4(L)473.61

(44)

570.49

(53)8 87

90.41

(2.56)

151.5

(4.29)

9.18

(0.26)

1500EXW4(L)505.9

(47)

602.78

(56)9 93

94.64

(2.68)

158.21

(4.48)

9.89

(0.28)

1600EXW4(L)527.43

(49)

635.07

(59)10 99

98.53

(2.79)

165.27

(4.68)

10.59

(0.3)

1680EXW4(L)559.72

(52)

678.13

(63)10 104

102.77

(2.91)

171.98

(4.87)

10.95

(0.31)


Table 3: High efficiency physical dataWater volume




50°F) (kW)





f3 (m3)

Steam(gen)f3 (m3)

1800EXW4(L)581.25

(54)

710.42

(66)11 111

107

(3.03)

178.69

(5.06)

11.65

(0.33)

1900EXW4(L)613.54

(57)

742.71

(69)11 118

111.24

(3.15)

185.4

(5.25)

12.36

(0.35)

2000EXW4(L)635.07

(59)

775

(72)12 124

115.13

(3.26)

192.11

(5.44)

13.07

(0.37)

Table 4: Standard efficiency physical dataWater volume




50°F) (kW)





f3 (m3)

Steam(gen)f3(m3)

150EXS(L)86.11

(8)

204.51

(19)1 10

7.42

(0.21)

11.65

(0.33)

1.41

(0.04)

180EXS(L)107.64

(10)

226.04

(21)1 12

8.83

(0.25)

13.77

(0.39)

1.41

(0.04)

240EXS(L)129.17

(12)

258.33

(24)2 16

10.59

(0.3)

16.24

(0.46)

1.41

(0.04)

300EXS(L)150.69

(14)

301.39

(28)2 20

12.71

(0.36)

19.78

(0.56)

2.12

(0.06)

360EXS(L)150.69

(14)

355.21

(33)2 24

16.24

(0.46)

29.31

(0.83)

2.47

(0.07)

400EXS(L)150.69

(14)

355.21

(33)2 24

16.24

(0.46)

29.31

(0.83)

2.47

(0.07)

450EXS(L)150.69

(14)

355.21

(33)3 30

19.42

(0.55)

41.32

(1.17)

2.83

(0.08)

500EXS(L)172.22

(16)

387.5

(36)3 33

21.19

(0.6)

44.14

(1.25)

3.18

(0.09)

560EXS(L)182.99

(17)

419.79

(39)4 37

22.95

(0.65)

49.09

(1.39)

3.53

(0.1)

600EXS(L)204.51

(19)

430.56

(40)4 40

25.07

(0.71)

52.27

(1.48)

3.88

(0.11)

700EXS(L)215.28

(20)

441.32

(41)4 47

27.9

(0.79)

56.86

(1.61)

4.59

(0.13)

800EXS(L)247.57

(23)

495.14

(46)5 53

31.08

(0.88)

66.39

(1.88)

5.3

(0.15)

900EXWS(L)344.45

(32)

538.2

(50)6 60

43.79

(1.24)

83.34

(2.36)

6

(0.17)

1000EXWS(L)376.74

(35)

570.49

(53)6 67

47.32

(1.34)

88.99

(2.52)

6.71

(0.19)

1100EXWS(L)409.03

(38)

624.31

(58)7 73

51.56

(1.46)

95.7

(2.71)

7.42

(0.21)

1200EXW3S(L)462.85

(43)

688.89

(64)8 80

59.33

(1.68)

115.83

(3.28)

8.48

(0.24)

1300EXW3S(L)495.14

(46)

753.47

(70)8 87

63.57

(1.8)

120.07

(3.4)

9.18

(0.26)

1400EXW3S(L)516.67

(48)

818.06

(76)9 93

66.74

(1.89)

125.37

(3.55)

9.89

(0.28)

1500EXW3S(L)548.96

(51)

882.64

(82)10 100

70.28

(1.99)

130.66

(3.7)

10.24

(0.29)

1600EXW3S(L)570.49

(53)

947.22

(88)10 107

73.45

(2.08)

135.96

(3.85)

10.95

(0.31)

1000EXW4S(L)365.97

(34)

430.56

(40)6 67

73.81

(2.09)

124.66

(3.53)

6.71

(0.19)

1120EXW4S(L)398.26

(37)

484.38

(45)7 75

79.46

(2.25)

134.2

(3.8)

7.42

(0.21)

1250EXW4S(L)430.56

(40)

527.43

(49)8 83

84.76

(2.4)

142.32

(4.03)

8.12

(0.23)


Table 4: Standard efficiency physical dataWater volume




50°F) (kW)





f3 (m3)

Steam(gen)f3(m3)

1400EXW4S(L)473.61

(44)

570.49

(53)9 93

90.41

(2.56)

151.5

(4.29)

9.18

(0.26)

1500EXW4S(L)505.9

(47)

602.78

(56)10 100

94.64

(2.68)

158.21

(4.48)

9.89

(0.28)

1600EXW4S(L)527.43

(49)

635.07

(59)10 107

98.53

(2.79)

165.27

(4.68)

10.59

(0.3)

1680EXW4S(L)559.72

(52)

678.13

(63)11 112

102.77

(2.91)

171.98

(4.87)

10.95

(0.31)

1800EXW4S(L)581.25

(54)

710.42

(66)12 120

107

(3.03)

178.69

(5.06)

11.65

(0.33)

1900EXW4S(L)613.54

(57)

742.71

(69)12 127

111.24

(3.15)

185.4

(5.25)

12.36

(0.35)

2000EXW4S(L)635.07

(59)

775

(72)13 133

115.13

(3.26)

192.11

(5.44)

13.07

(0.37)


Load points for EX(S)(L) and EXW(S)(L) unitsFigure 13: Load points for EX(S)(L) and EXW(S)(L) units


Load points for EX(L) and EXW(L) units - highefficiencyTable 5: Load points for high efficiency

Load point 1 - lb (ton) Load point 2 - lb (ton) Load point 3 - lb (ton) Load point 4 - lb (ton)

150EX(L)4,057(1.84)

4,387(1.99)

3,571(1.62)

3,858(1.75)

180EX(L)4,497(2.04)

5,203(2.36)

4,189(1.9)

4,850(2.2)

240EX(L)5,159(2.34)

5,952(2.7)

4,960(2.25)

5,754(2.61)

300EX(L)5,952(2.7)

6,878(3.12)

5,908(2.68)

6,834(3.1)

360EX(L)8,708(3.95)

8,708(3.95)

8,708(3.95)

8,708(3.95)

400EX(L)8,708(3.95)

8,708(3.95)

8,708(3.95)

8,708(3.95)

450EX(L)9,744(4.42)

9,105(4.13)

9,744(4.42)

9,105(4.13)

500EX(L)11,508(5.22)

10,759(4.88)

11,508(5.22)

10,759(4.88)

560EX(L)12,412(5.63)

11,618(5.27)

12,412(5.63)

11,618(5.27)

600EX(L)13,845(6.28)

12,941(5.87)

13,845(6.28)

12,941(5.87)

700EX(L)15,322(6.95)

14,330(6.5)

15,322(6.95)

14,330(6.5)

800EX(L)17,152(7.78)

16,028(7.27)

17,152(7.78)

16,028(7.27)

900EXW(L)18,475(8.38)

18,475(8.38)

18,475(8.38)

18,475(8.38)

1000EXW(L)20,128(9.13)

20,128(9.13)

20,128(9.13)

20,128(9.13)

1100EXW(L)21,716(9.85)

21,716(9.85)

21,716(9.85)

21,716(9.85)

1200EXW3(L)24,251

(11)24,471(11.1)

24,251(11)

24,471(11.1)

1300EXW3(L)25,794(11.7)

26,015(11.8)

25,794(11.7)

26,015(11.8)

1400EXW3(L)27,558(12.5)

27,778(12.6)

27,558(12.5)

27,778(12.6)

1500EXW3(L)29,101(13.2)

29,542(13.4)

29,101(13.2)

29,542(13.4)

1600EXW3(L)30,865

(14)31,085(14.1)

30,865(14)

31,085(14.1)

1000EXW4(L)22,046

(10)22,267(10.1)

22,046(10)

22,267(10.1)

1120EXW4(L)24,912(11.3)

24,912(11.3)

24,912(11.3)

24,912(11.3)

1250EXW4(L)26,896(12.2)

27,117(12.3)

26,896(12.2)

27,117(12.3)


Table 5: Load points for high efficiencyLoad point 1 - lb (ton) Load point 2 - lb (ton) Load point 3 - lb (ton) Load point 4 - lb (ton)

1400EXW4(L)29,321(13.3)

29,542(13.4)

29,321(13.3)

29,542(13.4)

1500EXW4(L)31,085(14.1)

31,306(14.2)

31,085(14.1)

31,306(14.2)

1600EXW4(L)32,849(14.9)

33,069(15)

32,849(14.9)

33,069(15)

1680EXW4(L)33,731(15.3)

33,951(15.4)

33,731(15.3)

33,951(15.4)

1800EXW4(L)35,494(16.1)

35,715(16.2)

35,494(16.1)

35,715(16.2)

1900EXW4(L)37,479

(17)37,699(17.1)

37,479(17)

37,699(17.1)

2000EXW4(L)39,242(17.8)

39,463(17.9)

39,242(17.8)

39,463(17.9)


Load points for EXS(L) and EXWS(L) units -standardTable 6: Load points for standard efficiency

Load point 1 - lb (ton) Load point 2 - lb (ton) Load point 3 - lb (ton) Load point 4 - lb (ton)

150EXS(L)3,770(1.71)

4,079(1.85)

3,329(1.51)

3,594(1.63)

180EXS(L)4,189(1.9)

4,828(2.19)

3,902(1.77)

4,497(2.04)

240EXS(L)4,784(2.17)

5,534(2.51)

4,630(2.1)

5,335(2.42)

300EXS(L)5,490(2.49)

6,349(2.88)

5,445(2.47)

6,305(2.86)

360EXS(L)8,333(3.78)

8,333(3.78)

8,333(3.78)

8,333(3.78)

400EXS(L)8,333(3.78)

8,333(3.78)

8,333(3.78)

8,333(3.78)

450EXS(L)9,348(4.24)

8,730(3.96)

9,348(4.24)

8,730(3.96)

500EXS(L)10,604(4.81)

9,921(4.5)

10,604(4.81)

9,921(4.5)

560EXS(L)11,839(5.37)

11,089(5.03)

11,839(5.37)

11,089(5.03)

600EXS(L)13,162(5.97)

12,302(5.58)

13,162(5.97)

12,302(5.58)

700EXS(L)14,573(6.61)

13,647(6.19)

14,573(6.61)

13,647(6.19)

800EXS(L)16,226(7.36)

15,190(6.89)

16,226(7.36)

15,190(6.89)

900EXWS(L)17,593(7.98)

17,593(7.98)

17,593(7.98)

17,593(7.98)

1000EXWS(L)19,026(8.63)

19,026(8.63)

19,026(8.63)

19,026(8.63)

1100EXWS(L)20,613(9.35)

20,613(9.35)

20,613(9.35)

20,613(9.35)

1200EXW3S(L)22,928(10.4)

23,149(10.5)

22,928(10.4)

23,149(10.5)

1300EXW3S(L)24,692(11.2)

24,692(11.2)

24,692(11.2)

24,692(11.2)

1400EXW3S(L)26,235(11.9)

26,455(12)

26,235(11.9)

26,455(12)

1500EXW3S(L)27,778(12.6)

27,999(12.7)

27,778(12.6)

27,999(12.7)

1600EXW3S(L)29,321(13.3)

29,542(13.4)

29,321(13.3)

29,542(13.4)

1000EXW4S(L)21,253(9.64)

21,407(9.71)

21,253(9.64)

21,407(9.71)

1120EXW4S(L)23,810(10.8)

23,810(10.8)

23,810(10.8)

23,810(10.8)

1250EXW4S(L)25,794(11.7)

26,015(11.8)

25,794(11.7)

26,015(11.8)


Table 6: Load points for standard efficiencyLoad point 1 - lb (ton) Load point 2 - lb (ton) Load point 3 - lb (ton) Load point 4 - lb (ton)

1400EXW4S(L)27,999(12.7)

28,219(12.8)

27,999(12.7)

28,219(12.8)

1500EXW4S(L)29,762(13.5)

29,983(13.6)

29,762(13.5)

29,983(13.6)

1600EXW4S(L)31,526(14.3)

31,747(14.4)

31,526(14.3)

31,747(14.4)

1680EXW4S(L)32,187(14.6)

32,408(14.7)

32,187(14.6)

32,408(14.7)

1800EXW4S(L)33,951(15.4)

34,172(15.5)

33,951(15.4)

34,172(15.5)

1900EXW4S(L)35,715(16.2)

35,935(16.3)

35,715(16.2)

35,935(16.3)

2000EXW4S(L)37,258(16.9)

37,479(17)

37,258(16.9)

37,479(17)


Split shipmentTable 7: Split shipment

Double effect steam fired absorption chillerMain shell unit Solution heat exchanger unit


Widthft (m)

Heightft (m)

Weightlb (ton)

Lengthft (m)

Widthft (m)

Heightft (m)

Weightlb (ton)

standard

Weightlb (ton) high

efficiency

150EX(S)(L)9.84

(3)

6.56

(2)

7.55

(2.3)

9,480

(4.3)

9.84

(3)

6.56

(2)

4.92

(1.5)

4,409

(2)

4,630

(2.1)

180EX(S)(L)11.81

(3.6)

6.56

(2)

7.55

(2.3)

10,141

(4.6)

11.81

(3.6)

6.56

(2)

4.92

(1.5)

6,834

(3.1)

7,055

(3.2)

240EX(S)(L)14.11

(4.3)

6.56

(2)

7.55

(2.3)

11,023

(5)

14.11

(4.3)

6.56

(2)

4.92

(1.5)

7,937

(3.6)

8,378

(3.8)

300EX(S)(L)15.75

(4.8)

6.56

(2)

7.55

(2.3)

13,228

(6)

15.75

(4.8)

6.56

(2)

4.92

(1.5)

8,818

(4)

9,259

(4.2)

360EX(S)(L)19.03

(5.8)

6.56

(2)

7.55

(2.3)

15,873

(7.2)

18.7

(5.7)

6.56

(2)

5.58

(1.7)

13,669

(6.2)

14,330

(6.5)

400EX(S)(L)19.03

(5.8)

6.56

(2)

7.55

(2.3)

15,873

(7.2)

18.7

(5.7)

6.56

(2)

5.58

(1.7)

13,669

(6.2)

14,330

(6.5)

450EX(S)(L)15.98

(4.87)

7.55

(2.3)

8.53

(2.6)

18,960

(8.6)

15.65

(4.77)

7.55

(2.3)

6.23

(1.9)

11,023

(5)

11,464

(5.2)

500EX(S)(L)17.62

(5.37)

7.55

(2.3)

8.53

(2.6)

21,164

(9.6)

17.29

(5.27)

7.55

(2.3)

6.23

(1.9)

12,346

(5.6)

12,787

(5.8)

560EX(S)(L)19.26

(5.87)

7.55

(2.3)

8.53

(2.6)

23,589

(10.7)

18.93

(5.77)

7.55

(2.3)

6.23

(1.9)

13,669

(6.2)

14,330

(6.5)

600EX(S)(L)21

(6.4)

7.55

(2.3)

8.53

(2.6)

25,353

(11.5)

20.67

(6.3)

7.55

(2.3)

6.23

(1.9)

14,771

(6.7)

15,432

(7)

700EX(S)(L)23.62

(7.2)

7.55

(2.3)

8.53

(2.6)

30,203

(13.7)

23.29

(7.1)

7.55

(2.3)

6.23

(1.9)

16,976

(7.7)

17,637

(8)

800EX(S)(L)26.57

(8.1)

7.55

(2.3)

8.53

(2.6)

34,172

(15.5)

26.25

(8)

7.55

(2.3)

6.23

(1.9)

19,401

(8.8)

20,283

(9.2)

900EXW(S)(L)22.31

(6.8)

8.86

(2.7)

8.86

(2.7)

44,533

(20.2)

21.98

(6.7)

9.19

(2.8)

6.56

(2)

17,637

(8)

18,298

(8.3)

1,000EXW(S)(L)24.28

(7.4)

8.86

(2.7)

8.86

(2.7)

47,620

(21.6)

23.95

(7.3)

9.19

(2.8)

6.56

(2)

18,739

(8.5)

19,621

(8.9)

1,100EXW(S)(L)26.57

(8.1)

8.86

(2.7)

8.86

(2.7)

51,588

(23.4)

26.25

(8)

9.19

(2.8)

6.56

(2)

20,062

(9.1)

20,944

(9.5)

1,200EXW3(S)(L)26.57

(8.1)

8.86

(2.7)

9.51

(2.9)

56,218

(25.5)

26.25

(8)

9.19

(2.8)

6.89

(2.1)

22,928

(10.4)

23,810

(10.8)

1,300EXW3(S)(L)28.22

(8.6)

8.86

(2.7)

9.51

(2.9)

59,525

(27)

27.89

(8.5)

9.19

(2.8)

6.89

(2.1)

24,692

(11.2)

25,794

(11.7)

1,400EXW3(S)(L)29.86

(9.1)

8.86

(2.7)

9.51

(2.9)

62,832

(28.5)

29.53

(9)

9.19

(2.8)

6.89

(2.1)

26,896

(12.2)

27,999

(12.7)

1,500EXW3(S)(L)31.5

(9.6)

8.86

(2.7)

9.51

(2.9)

65,257

(29.6)

31.17

(9.5)

9.19

(2.8)

6.89

(2.1)

28,880

(13.1)

30,203

(13.7)

1,600EXW3(S)(L)33.14

(10.1)

8.86

(2.7)

9.51

(2.9)

67,902

(30.8)

32.81

(10)

9.19

(2.8)

6.89

(2.1)

31,746

(14.4)

33,069

(15)

1,000EXW4(S)(L)20.34

(6.2)

8.86

(2.7)

11.15

(3.4)

46,958

(21.3)

20.01

(6.1)

9.19

(2.8)

7.22

(2.2)

18,960

(8.6)

19,842

(9)

1,120EXW4(S)(L)22.64

(6.9)

8.86

(2.7)

11.15

(3.4)

51,588

(23.4)

22.31

(6.8)

9.19

(2.8)

7.22

(2.2)

20,503

(9.3)

21,385

(9.7)

1,250EXW4(S)(L)24.61

(7.5)

8.86

(2.7)

11.15

(3.4)

55,116

(25)

24.28

(7.4)

9.19

(2.8)

7.22

(2.2)

22,267

(10.1)

23,149

(10.5)

1,400EXW4(S)(L)26.9

(8.2)

8.86

(2.7)

11.15

(3.4)

59,084

(26.8)

26.57

(8.1)

9.19

(2.8)

7.22

(2.2)

24,030

(10.9)

25,133

(11.4)

1,500EXW4(S)(L)28.54

(8.7)

8.86

(2.7)

11.15

(3.4)

61,950

(28.1)

28.22

(8.6)

9.19

(2.8)

7.22

(2.2)

26,015

(11.8)

27,117

(12.3)

1,600EXW4(S)(L)30.18

(9.2)

8.86

(2.7)

11.15

(3.4)

65,036

(29.5)

29.86

(9.1)

9.19

(2.8)

7.22

(2.2)

28,219

(12.8)

29,321

(13.3)

1,680EXW4(S)(L)31.82

(9.7)

8.86

(2.7)

11.15

(3.4)

67,902

(30.8)

31.5

(9.6)

9.19

(2.8)

7.22

(2.2)

30,203

(13.7)

31,526

(14.3)


Table 7: Split shipmentDouble effect steam fired absorption chiller

Main shell unit Solution heat exchanger unit


Widthft (m)

Heightft (m)

Weightlb (ton)

Lengthft (m)

Widthft (m)

Heightft (m)

Weightlb (ton)

standard

Weightlb (ton) high

efficiency

1,800EXW4(S)(L)33.46

(10.2)

8.86

(2.7)

11.15

(3.4)

70,768

(32.1)

33.14

(10.1)

9.19

(2.8)

7.22

(2.2)

32,849

(14.9)

34,172

(15.5)

1,900EXW4(S)(L)35.1

(10.7)

8.86

(2.7)

11.15

(3.4)

73,634

(33.4)

34.78

(10.6)

9.19

(2.8)

7.22

(2.2)

35,274

(16)

36,817

(16.7)

2,000EXW4(S)(L)36.75

(11.2)

8.86

(2.7)

11.15

(3.4)

76,500

(34.7)

36.42

(11.1)

9.19

(2.8)

7.22

(2.2)

37,920

(17.2)

39,463

(17.9)

Figure 14: Split shipment dimensions for YHAU-CW units


Process and instrumentationFigure 15 and Figure 16 system flow and process and instrumentation diagrams are used forquoting and bidding. Temperatures and pressures on these graphics are representative; actualvalues can differ.Figure 15: YHAU-CW double steam fired chiller flow diagram for EX(W)model


Figure 16: Process and instrumentation diagram for EX(W) model


Insulation1. The materials and their thickness for hot insulation or cold insulation are shown in Table 8.2. Use a bonding agent, iron wire, iron band, and so on, to fix the hot insulation/cold insulation

material. Never rivet them. Do not use welding pins.3. Make the outer covering, flanged parts, and evaporator water chamber casing easily

removable to facilitate servicing.4. The points that require hot insulation or cold insulation are shown in Table 9.5. The casing of the absorber and the condenser water chamber does not require hot insulation

or cold insulation. If insulation is used, make it easy to remove.Table 8: Insulating material and thickness

Hot insulation Cold insulationMaterial Rock wool or glass wool Polyurethane foam, polystyrene foam, or glass woolThickness 2 in. 2 in.

Table 9: Points requiring hot or cold insulation

Requires hot insulation Requires cold insulation Must not be heat-insulated

High temperature generator Evaporator shell Sight glassHeat exchanger for drain Evaporator water chamber case Valve manipulatorDrain piping Refrigerant spray piping CablesHeat exchanger Refrigerant blow piping Pressure gauge

Low temperature Point carrying cold insulation label Thermometer insertionhole

Point carrying hot insulationlabel

Valve for vacuuming (factory useonly) Relay insertion hole

Figure 17: Hot and cold insulation details


Water qualityTable 10: Water quality

Cooling water system

Circulating typeNon-circulating

waterChilled water system Tendency

Element

Circulating waterReplenish

waterPassing water

Circulating water(68°F or lower)

Replenishwater

CorrosionScale

formingpH 77°F 6.5-8.2 6.0-8.0 6.8-8.0 6.8-8.0 6.8-8.0 ○ ○Electric

Conductivity(mS/m) 77°F

(µS/cm) 77°F(1)

Max. 80

(Max. 800)

Max. 30

(Max. 300)

Max. 40

(Max. 400)

Max. 40

(Max. 400)

Max. 30

(Max. 300)○ ○

Chloride Ion(MGCLˉ/L)

Max. 200 Max. 50 Max. 50 Max. 50 Max. 50 ○

Sulfulic Acid Ion(mgSO4

2ˉ/L)Max. 200 Max. 50 Max. 50 Max. 50 Max. 50 ○

AcidConsumption

(PH4.8)(mgCaCO3/L)


Total Hardness(mgCaCO3/L)


CalciumHardness

(mgCaCO3/L)Max. 150 Max. 50 Max. 50 Max. 50 Max. 50 ○

Standard items

Ionized Silica(mgSiO3/L)


Iron (mgFe/L) Max. 1.0 Max. 0.3 Max. 1.0 Max. 1.0 Max. 0.3 ○ ○

Copper (mgCu/L) Max. 0.3 Max. 0.1 Max. 0.1 Max. 0.1 Max. 0.1 ○

SulfurizationIon (mgS2ˉ/L)

No ions allowed ○

Ammonium Ion(mgNH4+/L)

Max. 1.0 Max. 0.1 Max. 1.0 Max. 1.0 Max. 0.1 ○

Residual Chlorine(mgCI/L)


Free CarbonateAcid (mgCO2/L)


Reference items

Stability Index 6.0-7.0 – – – – ○ ○

Note:

1. The item names, their definitions, and units are based on JIS K 0101. Units and figures inbrackets are those that were used previously and are shown for reference purposes.

2. The 15 items shown in Table 10 are representative factors in corrosion and scaleformation.

3. In a cooling water system using a closed cooling tower, the closed-circuit circulatingwater and its replenishment water must meet the quality standards for a hot watersystem, and the sprinkling water and its replenishment water must meet the qualitystandards for a circulation-type cooling water system.

4. In the "Tendency" column, a white circle (○) indicates that a particular item is a factor incorrosion or scale formation.

5. When the water temperature is 104°F or higher, corrosion develops noticeably.Especially when the steel material that makes direct contact with water has no protectivecovering. Use a suitable corrosion-preventive measure, such as adding a corrosion-preventive agent or applying deaeration treatment.

6. The supply water and replenishment water must be tap water, industrial water, orground water. Do not use demineralized water, neutral water, or softened water.


Chilled and cooling water systemFigure 18: Chilled and cooling water system

Note: Use glycol or other anti-freeze agents to the chilled water for low chilled water supplytype chillers. If the designed chilled water outlet temperature is lower than 37°F and uses purewater, install the UPS to the chilled pump to avoid freezing.


Steam and drain systemFigure 19: Steam and drain system with steam control valve - open system

Figure 20: Steam and drain system with steam control valve - closed system


Figure 21: Steam and drain system with steam drain control valve


Control panelFigure 22: External connection terminal details

Note: The steam control valve is not factory scope and is provided by your local JCI team. Thesteam drain control valve is factory scope.


Remote transmissionFigure 23: Remote transmission


Electrical dataChiller model

Powersource

Circuit breakerSolution

circulation pumpSolution

spray pumpRefrigerant

pumpVacuum pump Capacity Consumption SCCR

YHAU-CW(N/L)(Voltage-

Phase-Frequency)

Ratedcurrent

(A)

Framecurrent

(A)

Power(kW)

FLA(A)

Power(kW)

FLA(A)

Power(kW)

FLA(A)

Power(kW)

FLA(A) (kVA) (kW) (kA)

208-3-60 35 125 2.2 11.4 1.1 6.2 0.2 2 0.75 3.21 8.7 7 5150EX(S)(L)

460-3-60 15 125 2.2 5.2 1.1 3 0.2 1.05 0.75 1.44 9 7.2 5208-3-60 40 125 2.2 11.4 1.1 6.2 0.4 2.8 0.75 3.21 9 7.2 5

180EX(S)(L)460-3-60 20 125 2.2 5.2 1.1 3 0.4 1.5 0.75 1.44 9.4 7.5 5208-3-60 50 125 3 14.8 2.2 11.4 0.4 2.8 0.75 3.21 12.1 9.7 5

240EX(S)(L)460-3-60 25 125 3 7.1 2.2 5.2 0.4 1.5 0.75 1.44 12.6 10.1 5208-3-60 50 125 3 14.8 2.2 11.4 0.4 2.8 0.75 3.21 12.1 9.7 5

300XE(S)(L)460-3-60 25 125 3 7.1 2.2 5.2 0.4 1.5 0.75 1.44 12.6 10.1 5208-3-60 70 125 5.5 25 2.2 11.4 0.4 2.8 0.75 3.21 15.8 12.6 5

400EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.2 0.4 1.5 0.75 1.44 15.7 12.6 5208-3-60 70 125 5.5 25 2.2 11.4 0.4 2.8 0.75 3.21 15.8 12.6 5

450EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.2 0.4 1.5 0.75 1.44 15.7 12.6 5208-3-60 70 125 5.5 25 2.2 11.4 0.4 2.8 0.75 3.21 15.8 12.6 5

500EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.2 0.4 1.5 0.75 1.44 15.7 12.6 5208-3-60 70 125 5.5 25 2.2 11.4 0.4 2.8 0.75 3.21 15.8 12.6 5

550EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.2 0.4 1.5 0.75 1.44 15.7 12.6 5208-3-60 70 125 5.5 25 2.2 11.4 0.4 2.8 0.75 3.21 15.8 12.6 5

600EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.2 0.4 1.5 0.75 1.44 15.7 12.6 5208-3-60 70 125 5.5 25 2.2 11.4 0.4 2.8 0.75 3.21 15.8 12.6 5

700EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.2 0.4 1.5 0.75 1.44 15.7 12.6 5208-3-60 70 125 5.5 25 2.2 11.6 0.4 2.8 0.75 3.21 15.9 12.7 5

800EX(S)(L)460-3-60 30 125 5.5 11 2.2 5.4 0.4 1.5 0.75 1.44 15.9 12.7 5208-3-60 80 125 5.5 25 2.2 11.6 1.3 7.2 0.75 3.21 17.4 13.9 5

900EXW(S)(L)460-3-60 35 125 5.5 11 2.2 5.4 1.3 3.4 0.75 1.44 17.4 13.9 5208-3-60 100 125 7.5 36 2.2 11.6 1.3 7.2 0.75 3.21 21.4 17.1 5

1000EXW(S)(L)460-3-60 45 125 7.5 16.5 2.2 5.4 1.3 3.4 0.75 1.44 21.8 17.4 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1100EXW(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1200EXW3(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1300EXW3(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1400EXW3(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1500EXW3(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1600EXW3(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1000EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1120EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1250EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1400EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1500EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1600EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 110 125 7.5 36 3.7 19 1.5 8.4 0.75 3.21 24.5 19.6 5

1680EXW4(S)(L)460-3-60 50 125 7.5 16.5 3.7 8.8 1.5 3.9 0.75 1.44 24.9 19.9 5208-3-60 150 225 11 52 7.5 36 2.2 11.6 0.75 3.21 37.5 30 5

1800EXW4(S)(L)460-3-60 70 125 11 23 7.5 16.5 2.2 5.4 0.75 1.44 37.4 29.9 5208-3-60 150 225 11 52 7.5 36 2.2 11.6 0.75 3.21 37.5 30 5

1900EXW4(S)(L)460-3-60 70 125 11 23 7.5 16.5 2.2 5.4 0.75 1.44 37.4 29.9 5208-3-60 150 225 11 52 7.5 36 2.2 11.6 0.75 3.21 37.5 30 5

2000EXW4(S)(L)460-3-60 70 125 11 23 7.5 16.5 2.2 5.4 0.75 1.44 37.4 29.9 5


Sound data

Octave bandLocation 1 Overall

31.5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz 16 kHz1 80/ 83 37 / 76 48 / 74 57 / 73 64 / 73 69 / 72 73 / 73 75 / 74 75 / 74 70 / 71 56 / 632 77 / 83 40 / 79 49 / 75 56 / 72 62 / 71 68 / 71 70 / 70 71 / 70 70 / 69 70 / 71 53 / 603 75 / 83 41 / 80 49 / 75 59 / 75 62 / 71 65 / 68 69 / 69 71 / 70 67 / 66 58 /59 44 / 514 78 / 84 40 / 79 50 / 76 61 / 77 64 / 73 71 / 74 71 / 71 74 / 73 71 / 70 65 / 66 50 / 575 64 / 80 37 / 76 44 / 70 60 / 76 56 / 65 54 / 57 57 / 57 56 / 55 50 / 49 36 / 37 26 / 33

1 Position of Measuring instrument

Note:

• Height: 5 ft, Horizontal: 3.3 ft (from chiller surface)• These data figures are reference values only, as the chiller unit was not covered with the

thermal insulation materials, and the water pipes (for chilled water, cooling water, andsteam), were temporary during the measurement.


Guide specifications

GeneralThe double effect steam-fired absorption chiller is capable of producing chilled water as reflectedby the capacities shown on the drawings and schedules.Each chiller is of hermetic design and factory helium leak-tested.The chiller must be shipped as a one-piece, charged with nitrogen, the solution and refrigerant iskept in the barrel and is charged at field. The steam control valve is sourced by your JCI local teamand installed at field. Alternatively, the steam drain control valve is mounted on the chiller beforedelivery. All unit mounted controls and control panels are factory mounted, wired, tested, andshipped preinstalled as integral components of the chiller.Purchase price must include start-up service and parts and labor warranty for a period of one yearfrom start-up, or 18 months from delivery, whichever occurs first.

Base unit includes:

• Absorber, evaporator, and condenser• ANSI Flanges (mating flanges are not included)• High temperature generator and low temperature generator• High temperature solution heat exchanger and low temperature solution heat exchanger• High temperature steam drain cooler and low temperature steam drain cooler• LTG refrigerant condensate heat exchanger• Hermetic solution circulation pump, solution spray pump and refrigerant pump• Compact 150 psig waterboxes for chilled water• Compact 150 psig for cooling water for models up to CW300EX(S)(L)• Marine type 150 psig for cooling water for models CW360EX(S)(L) or above• YORK Caribbean blue paint (Munsell 4.65G 4.50/2.85)• Epoxy paint inside chilled waterboxes and cooling waterboxes• Control panel• Power supply 460 V/3 phase/60 Hz and 3 wires.• Rupture disk for over pressure relief 12.0 psig ± 2.0 psi.• Chilled water pressure differential switch• Compound gauge• Automatic purge system including purge pump• 4-20 mA remote temperature reset control for chilled water• ASME pressure vessel code• UL labeling• LiBr (Lithium Bromide + Lithium Molybdate Inhibitor)• Deionized water refrigerant• 2-ethyl Hexyl Alcohol• Modbus TCP• Factory end of line function test


• Initial startup• Steam control valve, sourced by your local JCI team, for CW model or steam drain control

valve for CWN and CWL models• Steam drain solenoid valve• Dry shipment

Base unit does not include:

• Steam shut-off valve. This is sourced by your local JCI team.• Cold surface insulation (option)• Hot surface insulation• Cooling water pressure differential switch (option)• Field reassembly of split shipped units• Factory performance test (option)

ConstructionThe chiller must consist of a high temperature generator, a low temperature generator, ahigh temperature solution heat exchanger, a low temperature solution heat exchanger, a hightemperature drain cooler, a low temperature cooler, and an absorber, evaporator and condenser.To minimize the risk of corrosion, the evaporator dispersion tray and the absorber dispersion trayare built using stainless steel. Each dispersion tray involves a two-step construction process. Anyforeign material are removed from lithium bromide solution or the refrigerant at the first stage trayto avoid degradation of dispersion performance by clogging.The evaporator, absorber, condenser, low temperature generator and high temperature generatorare of shell and tube construction. The high temperature generator water box is designed for 150psig and water pressure tested to 195 psig, according to the ASME pressure vessel requirement. Ashell-side rupture disc is furnished and set to blow at 12.0 psig, ± 2.0 psi.The evaporator cycle and the absorber cycle must consist of the following two steps: upper stageand lower stage. This technology makes absorber solution concentration weak and makes the hightemperature generator solution temperature lower than the ordinary machine, which enables it toextend the machine life.The low temperature generator is a falling liquid film design.The following five plate type solution heat exchangers are equipped to achieve higher efficiency:high temperature solution heat exchanger, low temperature solution heat exchanger, hightemperature steam drain cooler, low temperature steam drain coolers, and LTG refrigerantcondensate heat exchanger .Lithium bromide solution flow type are a parallel flow cycle. The flow of weak solution pumpedfrom the absorber initially passes through the low temperature solution heat exchanger to improveoperating efficiency by preheating and is divided into two paths where one leads to the hightemperature generator through the high temperature solution heat exchanger and the other leadsto the low temperature generator in parallelThe unit is hermetically tight and built to very stringent standards. It operates under a bettervacuum, which improves performance and reliability ensuring design performance to GB/T18431-2014. Standard (2.03*10-6 Pa*m3/s).


Tube materialsThe high temperature generator tubes are made of 0.032 in. wall stainless steel (SS32205). Thelow temperature generator and condenser tubes are made of 0.024 in. wall thickness stainlesssteel (SUS436LTB).Evaporator and absorber tubes of Low Residual Phosphorus Deoxidized Copper(C1201), finned type with a wall thickness before finning of 0.024 in.

WaterboxesWaterboxes are removable to facilitate tube cleaning and replacement. Absorber and condenserwaterboxes for 360EX(S)(L) models or larger, are of marine type. Water circuit tubing arereplaceable from either end of the absorption unit. All waterboxes and associated water circuitnozzles and tube bundles are designed for 150 psig working pressure and water pressure testedto 188 psig. Vent and drain connections are provided on each waterbox. The high temperaturegenerator water box is designed for 150 psig and water pressure tested to 195 psig, according tothe ASME pressure vessel requirement. All the water connections are equipped with ANSI flanges.Mating flanges are not included. The inside of the waterboxes and the waterbox covers are coatedwith epoxy paint.

Automatic crystallization prevention systemChiller must have an automatic anti-crystallization system. The absorber and the evaporator arelocated side by side in a same shell and separated by the eliminator. When the concentrationrate of lithium bromide in the chiller goes up, the water level at the evaporator increases andautomatically spills over to the absorber and the concentration rate of the solution at the absorbergoes down.The refrigerant blow solenoid valve opens automatically to dilute the solution to preventcrystallization, when the solution temperature, pressure, or concentration of LiBr rises to eachprotection point and the chiller-heater runs load limitation.

PumpsSolution pump, solution spray pump, and refrigerant pumps are hermetically sealed, self-lubricating, totally enclosed, factory-mounted, wired and tested. Motor windings must not beexposed to lithium bromide or water. The suction and discharge connections for each pump arefully welded to the unit piping to minimize the opportunity for leaks. The pumps are designed tooperate for a total of 60,000 hours. The pump's bearings and sealing gaskets are inspected every20,000 hours and are replaced depending on condition.

Fully automatic purging systemThe chillers are equipped with an automatic purging system to remove non-condensable gasesfrom the unit during operation. Non-condensables are collected by an eductor and accumulatedin the purge tank. The control panel can sense the pressure increase in the purge tank andautomatically remove the non-condensable gas through the operation of an electric vacuum pump.The purge pumps are of an oil rotary two-stage design, and are furnished complete with a motorand all required accessories. The purge pump and connecting hose are factory installed. The purgepump oil is charged before delivery.


Lithium bromide and refrigerantLithium bromide must contain lithium molybdate corrosion inhibitor to minimize the rate of ferrousmetal corrosion on both the solution and refrigerant sides of the unit. The solution and deionizedrefrigerant water are kept in barrels and shipped with the chiller. They are then charged at the fieldduring the commissioning.

Dry shipmentThe solution and refrigerant water are kept in the barrels and shipped with the chiller. They arecharged in the field during the commissioning. The chiller is charged with N2 to 4.4 psig during thedelivery.

Control valveSteam-fired chillers are designed with a steam control valve for the CW model and a steam draincontrol valve for the CWN and CWL models, with the actuator motor. The steam control valve isnot in the factory scope and must be sourced by the local JCI branch according to engineeringspecifications. The steam drain control valve is in the factory scope and is mounted on the chillerbefore delivery.The steam or steam drain control valve assembly are capable of modulating steam flowcontinuously from approximately 20% to 100% of the maximum design chiller capacity. Theactuator motor is powered by the chiller’s control panel. The actuator motor position is controlledthrough the control panel through a 4-20 mA DC control signal.

Control panelEach unit is furnished complete with a factory mounted and pre-wired control system. The controlpanel enclosure are equipped with a hinged access door with lock and key. The protection rating ofthe control panel is IP42. All temperature sensors and other control devices necessary to sense unitoperating parameters to be factory mounted and wired to the panel. The control panel are capableof showing all system parameters in various languages with numeric data in metric or imperialunits.A dual inverter control system is available as an option to control the solution pumps.The operating program are stored in non-volatile memory (SRAM) to eliminate chiller failure due toAC power failure.Capacity control - The control panel must automatically control the input steam flow rateto maintain the programmed leaving chilled water set-point for cooling loads ranging fromapproximately 20% to 100% of design. The input steam flow rate must also be manually adjustablefrom the control panel to any setting between minimum and maximum when automatic operationis not required and when steam input is not being inhibited by a specific operating condition.


Main screen1. Equipment status:

- Chiller stop/operating/failure activating- Solution circulation pump, solution spray pump, refrigerant pump ON/OFF- Purge pump ON/OFF- Chilled water pump/cooling water pump ON/OFF

2. Operation status:

- Startup- Low combustion- Temperature control- Thermo off- Load limit- Dilution operation- Set point of chilled water leaving temperature- Control valve control output- Chilled water entering/leaving temperature- Cooling water entering/leaving temperature- Refrigerant temperature- Absorber temperature- High temperature generator temperature- High temperature generator concentration- High temperature generator pressure- Purge tank pressure

3. Condition lamps:

- Chiller stop/operation- Local/remote- Failure/alarm

4. Operation button:

- Chiller stop/operation- Local/remote mode select


Data screen1. Measured value:

- Chilled water entering temperature (°F)- Chilled water leaving temperature (°F)- Cooling water entering temperature (°F)- Cooling water leaving temperature (°F)- Evaporator refrigerant temperature (°F)- Absorber temperature (°F)- High temperature generator temperature (°F)- High temperature generator pressure (mmHg)- High temperature generator concentration (%)- Purge tank pressure (mmHg)- Control valve control output (%)

2. Operation hours:

- Chiller operation hours- Solution pump operation hours- Refrigerant pump operation hours

3. Frequency:

- Chiller operation times- Start times- Failure times- Alarm times- Automatic purge times

4. Trend:

- Chilled water temperature- Cooling water temperature- High temperature generator temperature- High temperature generator pressure

5. History menu:

- Hourly operation history (12 hours)- Minute operation history (12 minutes)- Failure history (6 times)- Alarm history (6 times)


Failure/alarm screen1. Failure:

- Chilled water time out- Cooling water time out- Operation interlock- Cooling water pump interlock- Chilled water suspension- Chilled water overcooled- Refrigerant overcooled- Constantly monitoring interlock- Solution pump inverter trouble- Low cooling water inlet temperature- Control sensor abnormal- CPU abnormal- High temp generator high temperature- High temp generator high pressure- High cut- Solution circulation pump abnormal- Solution spray pump abnormal- Refrigerant pump abnormal

2. Alarm:

- Abnormal purge frequency- Purge system abnormal- Chilled water overcool prevention control- Refrigerant overcool prevention control- Cooling water tube fouling- Refrigerant pump stop- High temp generator high temperature prevention control- High temp generator high pressure prevention control- High temp generator high concentration prevention control- Low cooling water inlet temperature- High cooling water inlet temperature- Recording sensor abnormal- Low battery- ELB for arrester trip


Setting screen1. Control parameter:

- Setting method local/remote- Setting base temperature- Remote setting differential- Set point (display)- Automatic stop temperature- Automatic restart temperature

2. Valve operation:

- Control valve mode auto/manual- Control valve position setting

3. Operation switch:

- Forced dilution on/off- Refrigerant pump Auto or Stop- Purge mode auto/manual- Manual purge on/off

4. Select language:

- Japanese, English, Chinese, German and other languages are available

5. Date and time

Touch panel mechanical specification -

• Screen size: 10.4 in.• Electrical power supply: DC 24 V• Electrical power consumption: Less than 17 W• Display: TFT 65,536 colors• Graphic mode: 640 x 480 dot (VGA)

Communication – Modbus communication as standard.

• Modbus/TCP

© 2021 Johnson Controls. 5000 Renaissance Drive, New Freedom, York, PA 17349, USA. www.johnsoncontrols.com Subjectto change without notice. All rights reserved www.york.com/

absorption chiller (mod a) yhau-cw double effect steam-fired

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