32 to 4475 nominal tons (139 to 19,669kw)

A D VA N C E D T E C H N O L O G Y I N

I N D U C E D D R A F T, C O U N T E R F L O W C O O L I N G T O W E R S

3 2 t o 4 4 7 5 N O M I N A L T O N S(139 TO 19,669kW)

TECHNOLOGY FOR THE FUTURE. . .AVAILABLE TODAY!

Bulletin 331B

† Mark owned by the Cooling Technology Institute

†

EVAPCO Power-Band Drive System

• The AT Cooling Tower features the highly successful, easymaintenance, heavy duty Power-Band Drive System.

• Standard heavy-duty pillow block bearings with a minimumL10 life of 75,000 hours.

• Extended lube lines.• External motor/belt adjustment.• Aluminum Alloy Sheaves, Solid-Back Multi-Groove Power-Band

Belts and Totally Enclosed motors are standard.• Five (5) Year Motor and Drive Warranty.

THE ADVANCED TECHNOLOGY DESI GN PROVIDING

Totally Enclosed Fan Motors• Motors positioned for external access.• Assures long life.• Motor location allows for easy accessibility

and serviceability.• Five (5) Year motor warranty.

EVAPCOAT Corrosion Protection System

• G-235 Galvanized Steel Construction and Stainless Steel Strainers–EVAPCO set thestandard with 2.35oz. of zinc per square foot of surface area.

• Another EVAPCO standard–the stainless steel suction strainer eliminates excessivewear and corrosion.

• Non-corrosive PVC Water Distribution System, Drift Eliminators and Inlet Louvers.• This system provides maximum corrosion protection as standard.

2

Since its founding in 1976,EVAPCO, Inc. has become aworld-wide leader in sup-

plying quality cooling equipmentfor thousands of customers inboth the commercial and indus-trial markets.

EVAPCO’s success has been the result of a continual commitmentto product improvement, qualityworkmanship and a dedication toproviding unparalleled service.

Our emphasis on research and development has led to manyproduct innovations – a hallmarkof EVAPCO through the years.

The ongoing R & D Program en-ables EVAPCO to provide the mostadvanced products in the industry– technology for the future, avail-able today.

With 17 facilities in eight coun-tries and over 170 sales offices in42 countries world-wide, EVAPCOis ready to assist in all your equip-ment needs.

©2008 EVAPCO, INC.

NEW!

Louver Access Door

• Hinged access panel with quick release mechanism.

• Allows easy access to perform routine maintenance and inspec-tion of the makeup assembly,strainer screen and basin.

• Available on all models. Standardon models with 5 ft. and 6 ft. talllouver sizes.

Easy Field Assembly

• A new field assembly seam designwhich ensures easier assembly and reduced potential for field seam leaks.

• Self-guided channels guide the fancasing section into position improvingthe quality of the field seam.

• Eliminates up to 66% of fasteners.

NEW!

EVAPCO, Inc., continues its dedicationto advancements in induced draft,counterflow cooling tower technologyand easy maintenance with the

Advanced Technology Cooling Tower...The EVAPCO AT!The AT is the result of decades of engineering success basedon easy maintenance, durable construction and a highlyefficient design. The AT brings marquee features that make it the best choice in cooling towers. These features arepresented in this exclusive AT Marketing brochure.

† Mark owned by the Cooling Tower Institute

†

EVAPCO unequivocallyguarantees the thermal performance of the AT cooling tower product line.

Exclusive 5 Year Motor & Drive Warranty

• Covers the complete drivesystem, including the motor.

• Covers all drive components onbelt or gear drive units.

• Standard on all AT Models.• Upgraded 5 year Complete

Product warranty on modelswith optional stainless steelconstruction.

EASIER SOLUTIONS AND BETTER CHOICES

Optional Motor Davit and Working Platform Motor Davit• Motor davit and bracket option for easy motor removal.• Also available for Gearbox removal.Platform• Platform and ladder arrangement available as an option.• Provides additional working surface for the service mechanic.

Quick Connect Piping System

• All inlet and outlet piping connections arebeveled for welding and grooved to accepta mechanical coupling device as standard.

• Facilitates easy pipe connections for quickinstallation.

• Flanged connections are available as anoption. (See page 10 Optional Equipment)

Available in 55 Cross Sections and a capacity range of 32 to 4475 NominalTons (139 to 19,669 kW)! The AT has a model for every application.

If there is an application for which the standard catalog product line does not work, EVAPCO will make acooling tower that will fit your requirement! Consult your local EVAPCO Representative or the factory forall your cooling tower needs.

CTI Certified-Standard 201

• Independent Certification.• Eliminates necessity for costly field

performance tests.

Clean Pan SlopedBasin Design

• Designed tocompletely drain thecold water basin.

• Helps prevent buildupof sediment andbiological film.

• Eliminates standingwater after draindown. (See details of design on page 6)

Smooth Flow Fan • Soft-connect blade to

hub design.• Variable Frequency Drive friendly• Eliminates critical blade passing

frequencies at any speed.(Not available on 4 ft. wide models)

Water Distribution System• Non-corrosive PVC construction with new EvapJet™

nozzles.• Large orifice nozzles prevent clogging and are

threaded for easy removal and positive positioning.• 66% fewer nozzles!• System branches have threaded end caps to assist

with debris removal.

NEW! EvapJet™ Nozzle

3

AT

E A S Y S O L U T I O N S , B E T T E R C H O I C E S !

4

DE S I G N AD VA N TA G E S

Air Intake

Sunlight

Splashout

Debris

Sunlight

Splashout

Debris

The Advanced Technology DesignThe AT Cooling Tower product line is an Advanced Technology design which utilizes induced draft, counterflow technology–themost efficient in the industry and the best design for operation in a freezing climate. The counterflow design provides the ATCooling Tower with inherently better operational and maintenance features. These features are described below.

Principle of OperationWarm water from the heat source is pumped to the water distribution systemat the top of the tower. The water is distributed over the wet deck fill bymeans of large orifice nozzles. Simultaneously, air is drawn in through the airinlet louvers at the base of the tower and travels upward through the wetdeck fill opposite the water flow. A small portion of the water is evaporatedwhich removes the heat from the remaining water. The warm moist air isdrawn to the top of the cooling tower by the fan and discharged to the at-mosphere. The cooled water drains to the basin at the bottom of the towerand is returned to the heat source.The vertical air discharge of the AT design and the distance between the discharge air and fresh air intakes, reduces the chance of air recirculation,since the warm humid air is directed up and away from the unit. For detailedlayout information please consult EVAPCO’s Equipment Layout Guidelines Bul-letin 311.

Patented* Efficient Drift EliminatorsAn extremely efficient drift eliminator system is standard on the AT CoolingTower. The system removes entrained water droplets from the air stream tolimit the drift rate to less than 0.001% of the recirculating water rate.With a low drift rate, the AT Cooling Tower saves valuable water and watertreatment chemicals. The AT can be located in areas where minimum watercarryover is critical, such as parking lots.The drift eliminators are constructed of an inert polyvinyl chloride (PVC) plasticmaterial which effectively eliminates corrosion of these vital components.They are assembled in sections to facilitate easy removal for inspection of thewater distribution system.

Patented** EVAPAK® FillThe patented EVAPAK® fill design used in the AT Cooling Tower is specially de-signed to induce highly turbulent mixing of the air and water for superior heattransfer. Special drainage tips allow high water loadings without excessive pres-sure drop. The fill is constructed of inert polyvinyl chloride, (PVC), will not rot ordecay, and is formulated to withstand water temperatures of 130˚F (55˚C). Be-cause of the unique way in which the crossfluted sheets are bonded together,and the bottom support of the fill section, the structural integrity of the fill isgreatly enhanced, making the fill usable as a working platform.The fill selected for the AT Cooling Tower has excellent fire resistant qualities.AT Cooling Tower fill has a flame spread rating of 5 per ASTM-E84-81a.A higher temperature fill is available for water temperatures exceeding130˚F (55˚C). Consult your EVAPCO representative for further details.

Superior Air Inlet Louver and Screen DesignThe air inlet louver screens on the AT are constructed of corrosion-free PVC.They are a bi-planar design that eliminates splashout and reduces the potentialfor algae formation inside the tower.In uni-planar louver systems used by other manufacturers, circulating waterdroplets tend to splashout, especially when the fans are shut off. With the ex-clusive EVAPCO bi-planar louver system, the water droplets are captured on theinward sloping pass, eliminating splashout and the problems associated with it.EVAPCO’s patented louver design completely encloses the basin area. In addi-tion to eliminating splash out, EVAPCO’s inlet louver screens are of a ‘SightTight’ design. Direct sunlight is blocked from the water inside the coolingtower, thereby reducing the potential of algae formation. Water treatment and maintenance costs are substantially reduced.While effectively containing the recirculating water and blocking sunlight, thelouver design has a low pressure drop. The low pressure drop results in lower fanenergy consumption, which reduces the operating costs of the cooling tower.

Hot Saturated Discharge Air

Hot Water In

Cooled Water Out

Cool DryEntering Air

* U.S. Patent No. 631580481 ** U.S. Patent No. 5124087


5

DE S I G N AD VA N TA G E S

Pressurized Water Distribution SystemThe water distribution system is made of schedule 40 PVC pipe andEvapJet ABS plastic water diffusers for corrosion protection in thiskey area. The piping is easily removable for cleaning. The waterdiffusers have a 1 inch diameter (25mm) opening and are practi-cally impossible to clog. They also have an anti-sludge ring extend-

ing into the headers to preventsediment from building up in thediffuser opening. In addition, thespray branches have threaded endcaps to allow easy debris removal.The spray pressure for all AT CoolingTowers is between 1 and 6 psig (7and 42 kPa) at the inlet header. Theactual spray pressure will be shownon the certified drawings which are prepared for each unit.

Reduced Piping CostsEach cell of the AT Cooling Tower is furnished with one inlet andone outlet piping connection. This design reduces the amount ofexternal piping and thereby lowers the installed cost of the coolingtower. The water distribution system is pressurized and self balanc-ing. On single cell installations, field balancing is not required onthe AT, and the need for flow balancing valves is eliminated, furtherreducing the cost of tower installation. The wide orifice nozzleswith anti-sludge ring used in the AT water distribution system helpsprevent clogging, reducing the maintenance costs of the water dis-tribution system.

Fast, On-Time ShipmentsThe AT is a completely factory assembled cooling tower manufac-tured by a dedicated professional workforce, expert in buildingcooling towers. Factory trained mechanics and EVAPCO’s strictquality control and inspection procedures guarantee the quality ofevery unit shipped.EVAPCO’s controlled factory environment ensures fast on-time ship-ments, allowing the AT to be available...

WHEN THE CUSTOMER WANTS IT!

Optimum Design for Freezing ClimatesThe counterflow fill design used in the AT Cooling Tower is wellsuited for winter operation. The wet deck surface is totally en-cased, and protected from freezing winds thus inhibiting ice for-mation on the fill section.The even temperature gradient of the counterflow fill designmakes the AT Cooling Tower the ideal unit for operation in freez-ing climates.The counterflow design of the AT Cooling Tower fill section re-duces the chance of ice formation and with bottom support, elimi-nates fill collapse should ice form.

New EvapJet nozzle compared to previous EVAPCO nozzles


6

MA I N T E N A N C E AD VA N TA G E S

Stainless Steel StrainersThe EVAPCO standard for many years, the stainless steel strainer is onecomponent of the cooling tower subject to excessive wear and corrosion.With stainless steel construction, this component will last the life of thecooling tower.

The Advanced Technology Easy Maintenance Basin DesignThe cold water basin is the most important area of a cooling tower to maintain. As a result of the evaporation process and thedirect contact of the water with air in a cooling tower, dirt and debris will collect in the basin and must be cleaned out on aregular basis. EVAPCO’s AT basin section is designed to allow quick and easy access—promoting maintenance of the cold waterbasin. The basin features the following:

Easy AccessThe cold water basin section is easily accessible from ground level by simplyloosening the (2) two Quick Release Fasteners on the inlet louver assem-blies surrounding the cooling tower and lifting out the lightweight louver.

The basin can be accessed from all (4) four sides of the cooling tower. Thebottom of the fill section is a minimum of four (4) feet (1.2m) above thebasin floor. This open basin design enables the AT basin to be easily cleaned.

Clean Pan Basin DesignThe AT features a completely sloped basin from the upper to lower pan sec-tion. This “Clean Pan” design allows the water to be completely drainedfrom the basin. The cooling tower water will drain from the upper sectionto the depressed lower pan section where the dirt and debris can be easilyflushed out through the drain. This design helps prevent buildup of sedi-mentary deposits, biological films and minimizes standing water. Note: on 4' wide units, the pan is sloped without the step

Easy, Removable Air Inlet Louvers with Quick Release FastenersThe AT features a Quick Release Fastener design consisting of (2) two largethumbscrews and a retaining bracket system. By loosening the thumb-screws, the retaining bracket lifts away from the louver frame, allowing the louver to be removed while the retaining bracket and thumbscrews stayon the cooling tower.• Design allows quick removal of louvers.• Louver fastener is large and easy to release.• Louver fastener remains on the unit–eliminating the possibility of

missing hardware.

Louver Access Door To aid in basin maintenance, all AT models can be equipped with anoptional louver access door. This feature allows easy access to performroutine maintenance and inspection of the makeup assembly, strainerscreen and basin without removing an entire inlet louver. This featureis available on all models and is standard on models with 5’ & 6’ talllouver sizes.


7

MA I N T E N A N C E AD VA N TA G E S

The Advanced Technology Easy Maintenance Drive SystemThe EVAPCO POWER-BAND drive system utilized on the AT Cooling Tower is the easiest drive system to maintain in the industry. There is no need to stand inside the cold water basin to service the bearings, belts, gear reducers, floatingshafts or electrical equipment. In addition, there is no need for fan deck handrails or safety cages, since all periodic main-tenance can be safely performed from the side of the AT. The most important features of this design are listed below.

Models AT 14-64 through AT 39-942 Motor Mount, Power Band Belt Adjustment and Bearing Lubrication

The fan motor and drive assembly are designed to allow easy servicing of the motor and adjustment of the belt tension fromthe exterior of the unit. The T.E.F.C. fan motor is mounted on the outside on these models and is protected from the weatherby a cover which swings away for maintenance.

A large hinged access door is located on the side of the unit for easy access to the fan drive system. The belt can be adjustedby tightening the J-Bolts on the motor base and the tension can be checked easily through the access door, all while standing

at the side of the unit. Thebearings can also be lubri-cated from the side of theunit. The bearing lubricationlines have been extended tothe exterior casing and arelocated by the access door,thus making bearing lubri-cation easy.

Sloped access ladders andworking platforms areavailable as an option to facilitate maintenance. See page 9, Optional Equipment, for details.

Models AT 110-112 through AT 428-1248 Motor Mount, Power Band Belt Adjustment and Bearing Lubrication

The T.E.A.O. fan motor is located inside the fan casing on the large ATCooling Tower, and is mounted on a rugged heavy duty motor base. Themotor base is designed to swing completely to the outside of the unitthrough a very large hinged (14 square feet) (1.3 square meters) accessdoor greatly simplifying motor maintenance. The unique swinging motor mount designed for these models featureseasy belt adjustment from the exterior of the unit. The T.E.A.O. fanmotor is mounted on an adjustable base which is supported by two heavyduty galvanized steel pipes. The belt is adjusted by tightening an all-thread which runs through the motor base. The innovative motor base features a unique locking mechanism for apositive belt adjustment and is also used to adjust the belt tension if awrench is not available.Bearing lubrication fittings are extendedto the side of the unit inside the accessdoor to allow easy application of the bear-ing lubricant. This external location al-lows for easy servicing of the bearings andis another important advantage ofEVAPCO equipment.To facilitate motor removal, an optionalmotor davit is available. See OptionalEquipment on page 9 of this brochure.


8

DR I V E SY S T E M DE S I G N

The Advanced Technology POWER-BAND Drive System DesignThe AT Cooling Tower features the highly successful EVAPCO POWER-BAND Belt Drive System engineered for heavy-duty opera-tion. The POWER-BAND Drive System has consistently provided trouble-free operation in the most severe duty cooling tower ap-plications. In addition, the complete drive system including the fan motor is standard with a (5) Five Year Motor & Drive Warranty.

Fan MotorsAll AT Cooling Tower models utilize heavy duty totally enclosed (T.E.F.C. orT.E.A.O.) fan motors designed specifically for cooling tower applications. Inaddition to the standard motors offered on each cooling tower, EVAPCO offersmany optional motors to meet your specific needs, including:

• Premium Efficiency Motors• Multi-Speed Motors• Inverter-Duty Motors for Variable Frequency Drive Applications

The T.E.F.C. motors are located on the outside of the unit on Models AT 14-64 through AT 39-942 and are protected by a hinged, swing away cover.

Models AT 110-112 through 428-1248 have T.E.A.O. motors located inside thefan section on a heavy duty motor base which swings to the outside for repairor removal.

Five Year Motor and Drive WarrantyEVAPCO provides a standard 5 year motor and drive warranty on allPower-Band belt drive and optional gear drive AT Cooling Towers. Thisunique warranty is designed to offer the end user optimum protectionagainst fan drive and motor failure. It is a comprehensive plan which in cludes the fan, fan shaft, belts, sheaves, fan bearings, gear box, flexiblecoupling, driveshaft and the motor.

Power-Band Belt DriveThe Power-Band drive is a solid-back multigroove belt system that has high lateral rigidity. The belt is designed for cooling tower service, and isconstructed of neoprene with polyester cords. The drive belt is sized for 150 percent of the motor nameplate horsepower ensuring long and trouble free operation.

Drive System SheavesDrive system sheaves located in the warm, moist atmosphere inside thecooling tower are constructed of an aluminum alloy. Those located externally are protected by a hinged protective cover.

Fan Shaft BearingsThe fan shaft bearings on the AT cooling tower are specially selected toprovide long life, minimizing costly downtime. They are rated for an L-10life of 75,000 to 135,000 hours, making them the heaviest duty pillowblock bearing in the industry used for cooling tower duty.

On Models AT 110-112 through 428-1248On Models AT 14-64 through 39-942


9

OP T I O N A L EQ U I P M E N T

Optional EquipmentThe standard design of the EVAPCO AT provides the customer with the easiest cooling tower to maintain in the industry.There are additional options which can make maintenance easier and extend the life of the cooling tower. These optionsare listed below.

Sloped Access LaddersThe EVAPCO designed access ladder features a sloped “ships type”ladder arrangement which provides fast and easy access to thewater distribution system and drive components. A handrail is at-tached to the sloped ladder for safe and easy ascent and descent.There is no need for safety cages with this design. The ladder(s)will ship loose and must be field mounted. Meets all applicableOSHA requirements.

Note: The sloped access ladder is available on all models AT 19-56through AT 428-1248. A vertical ladder is available on models AT 14-64 through 14-912.

Working Platform & Ladder with DavitAT Cooling Towers are available with an external working platformand ladder to allow easy servicing of the fan motor and water dis-tribution system. Providing a convenient platform to performwork, the heavy duty galvanized steel platform is self-supporting-which eliminates the need for any external support. A less expen-sive alternative to field erected catwalks, the working platformoption uses a straight ladder as standard and ships in sections foreasy installation. (The working platform and ladder meet all appli-cable OSHA requirements.)

Note: The Working Platform is not available on models AT 14-64through 14-912.

The davit option eliminates crane rentals and facilitates the removalof motors and gear drives. The davit and bracket are constructed ofaluminum and are mounted on the side of the unit. The optionalfan motor and gear davit ships loose and is installed in the field.

Stainless Steel Water Touch BasinThe AT Cooling Tower has a modular design which allows specificareas to be enhanced for increased corrosion protection. The basinarea of the cooling tower experiences turbulent mixing of air andwater, in addition to silt build-up. In conjunction with the EVAP-COAT Corrosion Protection System, EVAPCO offers an optional Stain-less Steel Water Touch Basin. This option provides Type 304 or Type316 stainless steel for the entire basin area including the supportcolumns of the cooling tower and the louver frames.

The basin section provides the structural support for the unit and isthe most important part of the cooling tower. The Stainless SteelWater Touch Basin provides maximum corrosion protection.

Basin Level PlatformAT Cooling Towers are available on some box sizes with a basin levelplatform and ladder to allow easy servicing of the cold water basin.

• Facilitates Maintenance- Adjust Float Assembly- Clean Basin and Suction Strainer

• Self Supporting and Easy Installation- Platform Supported from Unit- Ladder Requires Field Support- Ships in Modules for Easy Installation

Note: Louver frame and support not in photo


10

OP T I O N A L EQ U I P M E N T

Electric HeatersElectric immersion heaters are available as an option and are located in thebasin of the tower. They are sized to maintain a +40° F (4.5°C) pan watertemperature at 0°F (-18°C) ambient with the fans and system pumps off*.They are furnished with a thermostat and low water protection device tocycle the heater on when required and to prevent the heater elements fromenergizing unless they are completely submerged. All components are en-closed in rugged, weather proof enclosures for outdoor use. Heater controlpackages that include contactor, transformer or disconnects are available,consult your local EVAPCO representative.

(*) - Electric heater selection based on 0°F (-18°C) ambient temperature.For alternate low ambient heater selections, consult factory. Refer to thefactory certified heater drawing for quantity and sizing of heaters.

Electric Water Level ControlEVAPCO cooling towers are available with an optional electric water levelcontrol system in place of the standard mechanical makeup valve and floatassembly. This package provides very accurate control for the basin waterlevel and does not require field adjustment, even under varying operatingconditions.

The control was designed by EVAPCO and is manufactured exclusively forEVAPCO. It consists of multiple heavy duty stainless steel electrodes. Theseelectrodes are mounted external to the unit in a vertical stand pipe. Forwinter operation, the stand pipe must be wrapped with electric heatingcable and insulated to protect it from freezing.

The weather protected slow closing solenoid valve(s) for the makeup waterconnection is factory supplied and is ready for piping to a water supply witha pressure between 5 and 125 psig (34 and 862 kPa).

Other Options• Heater Control Packages• Hot Water or Steam Coils• Steam Injectors• Bottom Suction Connections• Vibration Switches• Remote Sump Connections• Motors–Energy Efficient / Inverter Duty /

2S/1W and 2S/2W / Mill and Chem DutyAutomotive Duty and Many More, Consult the Factory

Flanged Connections Bypass Connections withDiffuser Hood

Equalizers and Flume Plates

iES the internet Equipment SolutioniES is a Web based computer selection program which allowsthe design engineer to choose EVAPCO models and optimizeunit selections. The program allows the engineer to evaluatethe equipment’s thermal performance, space and energy re-quirements. Once the model is selected and optional equip-ment features are inserted, the engineer may generate acomplete specification AND a unit drawing from this pro-gram. The software is designed to provide the user with max-imum flexibility in analyzing the various selection parameterswhile in a friendly and familiar Windows format.The iES Equipment Selection Software program may be ac-cessed using Microsoft Internet Explorer after contacting yourlocal EVAPCO sales representative. Users may make Requestsfor Quotations through the website or by e-mailing EVAPCOat this address [email protected]

Technical Support Services

EVAPCO’s WebsiteLog on to EVAPCO’s new and improved websitehttp://www.evapco.com. for expanded product informa-tion. Users can view and download unit certified and steelsupport drawings in a .pdf format readable using AdobeAcrobat. In addition, scaled isometric views of our equip-ment in CAD (.dwg format) are also available. Product liter-ature, Rigging and Maintenance Instructions and EVAPCOlogo apparel and merchandise are all accessible online fromyour computer.

With the internet Equipment Solution program, equipment se-lections, written specifications, unit drawing files and EVAPCOon-line information are readily available from the comfort ofyour own office!


11

LOW SOUND SOLUTIONS

Water Silencer–Reduces Water Noise in the Cold Water Basin up to 7 dB(A)!The water silencer option is available for all induced draft models and is located in thefalling water area of the cold water basin. The water silencer will reduce the high fre-quency noise associated with the falling water and is capable of reducing overall soundlevels 4 dB(A) to 7 dB(A) measured at 5 ft. from the side or end of the unit. The watersilencers reduce overall sound levels 9 dB(A) to 12 dB(A) (depending on water loadingand louver height) measured 5 ft. from the side or end of the unit when water is circu-lated with fans off.

The water silencers are constructed of lightweight PVC sections and can be easily removedfor access to the basin area. The water silencer will have no impact on unit thermal per-formance.

The Water Silencer is available on AT, USS and UT Cooling Towers.

Note: Water Silencers are not available for the AT/USS 14-64 through 14-912 cooling towers.

The Expanded Family of the EVAPCO Super Low Sound Fans!

Low Sound Fan* 4 – 7 dB(A) Reduction!

The Low Sound Fan offered by EVAPCO is a wide chord blade design for sound sensitiveapplications where low sound levels are desired. The Low Sound Fan shall utilize aunique soft-connect blade-to-hub design that is compatible with Variable Speed Drives.Since the blades are not rigidly connected to the fan hub, no vertical vibration forces aretransmitted to the unit structure which reduces sound pressure levels 4 dB(A) to 7 dB(A),depending on specific unit selection and measurement location. The fans are high effi-ciency axial propeller type and are CTI Certified on the AT line of Cooling Towers.

The Low Sound Fan is NOT available on the UT Cooling Tower.

* The CTI Certified Low Sound Fan will have a thermal performance derate up to 3.5%.Consult the factory or iES Program for actual thermal performance.

Fan Discharge Sound Attenuation– Up to 10 dB(A) Reduction!

The discharge attenuator is a factory assembled straight sided discharge hood designedto reduce overall discharge sound levels at full fan speed 5 dB(A) to 10 dB(A), depend-ing on specific unit selection and measurement location. It is constructed of G-235 galva-nized steel as standard (options available for Type 304 stainless steel) and includesinsulated walls and a low pressure drop baffling system that is acoustically lined withhigh density fiberglass. The discharge attenuator is supported entirely by the unit and isshipped as an assembled section for easy mounting in the field. The discharge attenua-tor is covered by a heavy gauge hot-dip galvanized steel fan guard to prevent debrisfrom entering the attenuator.

The discharge attenuator will have a minimal impact on unit thermal performance (0%-2% derate depending on specific unit selection).

**The discharge attenuator is available on 10 ft., 12 ft., 14 ft., 20 ft., 24 ft. and 28 ft. wideAT Models with the Low Sound Fan option.

(Note: The Fan Discharge Attenuator Option is NOT available on UT or USS Models provided with the Super Low Sound Fan.)

Super Low Sound Fan 9 – 15 dB(A) Reduction!

The Super Low Sound Fan offered by EVAPCO utilizes an extremely wide chord bladedesign available for sound sensitive applications where the lowest sound levels aredesired. The fan is one-piece molded heavy duty FRP construction utilizing a forwardswept blade design. The Super Low Sound fan is capable of reducing the unit soundpressure levels 9 dB(A) to 15 dB(A), depending on specific unit selection and measurement locationcompared to the original AT fan.

Note: The Super Low Sound Fan is not available on models AT/USS 14-64 through 14-912.


12

Notes:

T E C H N O L O G Y F O R T H E F U T U R E , AV A I L A B L E T O D AY !

13

IBC CO M P L I A N C E

IBC

CO

MPLIA

NC

E

We Stand Tall Through it All!

Wind, Rain, Earthquake

and Hurricane

EVAPCO Cooling Towers…designed to withstand seismic or wind load forces.

The International

Building Code (IBC) is a

comprehensive set of

regulations addressing

the structural design

and installation

requirements for

building systems –

including HVAC

and industrial

refrigeration

equipment.

With the advent

of the IBC,

EVAPCO is

proud to

introduce the new and

improved line of AT, UT and USS

Cooling Towers with IBC 2006

compliance standard.


14


What is IBC?International Building CodeThe International Building Code (IBC) is a comprehensiveset of regulations addressing both the structural designand the installation requirements for building systems –including HVAC and industrial refrigeration equipment.The IBC is intended to replace BOCA’s The National Build-ing Code, ICBO’s Uniform Building Code and SBCCI’s Stan-dard Building Code.

Compared to previous building codes that consideredonly the building structure and component anchorage,the requirements contained within the IBC address an-chorage, structural integrity, and the operational capabil-ity of a component following either a seismic or windload event. Simply stated, the IBC code provisions re-quire that evaporative cooling equipment, and allother components permanently installed on astructure, must be designed to meet the same seis-mic or wind load forces as the building to whichthey are attached.

How Does IBC 2006 Apply to CoolingTowers?Based on the project zip code and site design factors, cal-culations are made to determine the equivalent seismic“g force” and wind load (in pounds per square foot – psf)on the unit. The cooling tower must be designed to with-stand the greater of either the seismic or wind load.

All locations with design criteria resulting in a seismicdesign force of up to 1.0g or a wind load of 60 psf orbelow will be provided with the standard AT structuraldesign. An upgraded structural design is available forinstallations with design criteria resulting in “g forces”greater than 1.0g. The highest “g force” location inNorth America is 5.12g. The highest wind load shownon the maps is 170 mph, which is approximately equal to

145 psf velocity pressure. Therefore, the upgradedstructural design package option for the New AT isdesigned for 5.12 g and 145 psf making it applica-ble to ALL building locations in North America.

Seismic DesignThe chart shown below, from the US Geological SurveyWebsite http://www.usgs.gov/ shows the potential seis-mic activity in the United States. Buildings constructed inthe red, orange and yellow areas of the map are mostlikely to require the upgraded AT construction designbased on the site seismic design factors. Critical use facil-ities, such as hospitals, are also more likely to require theupgraded design.

The project architect or civil engineer is responsible fordetermining the seismic design factors to be used for thebuilding design. A mechanical consulting engineer and/ordesign build contractor will then apply these factors to aseries of charts and graphs to determine the appropriateseismic design factors based on the location of the instal-lation and ultimately the “importance” of the facility.The specific factors necessary for seismic design as well asa sample seismic calculation are shown on the next page.

32+

Highest Hazard

Lowest Hazard

%g

24-3216-248-164-82-40-2

Map courtesy US Geological Survey website

In its continuing commitment to be the leaders in evaporative cooling equipment design andservices, EVAPCO AT Cooling Towers are now Independently Certified to withstand Seismic and

Wind Loads in ALL Geographic Locations and Installations in accordance with IBC 2006.

The New AT is offered with a choice of TWO structuraldesign packages:

• Standard Structural Design – For projects with 1.0g seismic or 60 psf wind loads

• Upgraded Structural Design – Required forprojects with 1.0 g seismic or 60 psf wind loads >

<–


15


Wind DesignThe IBC 2006 code book includes a map of basic windspeed (3-second gust) by contour lines. However, localregulations may be more stringent than these publishedspeeds. The specific factors necessary for wind load aswell as a sample wind load calculation are shown onPage 16.

Whichever design force - seismic or wind - is more severefor the building, governs the design of the building andall attached equipment.

Design ImplementationEVAPCO applies the seismic design and wind load infor-mation provided for the project to determine the equip-ment design necessary to meet IBC requirements. Thisprocess ensures that the mechanical equipment and itscomponents are compliant per the provisions of the IBCas given in the plans and specifications for the project.

Independent CertificationAlthough the IBC references and is based on the struc-tural building code ASCE 7, many chapters and para-graphs of ASCE 7 are superceded by the IBC, independentcertification and methods of analysis are such paragraphs.Per the most recent edition of the code, the EVAPCOcompliance process included an exhaustive analysis by anindependent approval agency. As required by the Inter-national Building Code, EVAPCO supplies a certificate ofcompliance as part of its submittal documents. The certifi-cate of compliance demonstrates that the equipment hasbeen independently tested and analyzed in accordancewith the IBC seismic and wind load requirements. Evapcohas worked closely with the independent approvalagency, The VMC Group, to complete the independentequipment testing and analysis.

If the seismic “g force” or wind load psf requirements forthe project site are known, EVAPCO’s online equipmentselection software, iES, will allow you to choose the re-quired structural design package – either standard con-struction or upgraded construction.

If the project requirements are unknown, the followingcalculations must be completed.

For further questions regarding IBC compliance, pleasecontact your local EVAPCO Representative or visitwww.evapco.com.

Seismic Load CalculationsThe data required to calculate the seismic load are:

Occupancy Category – I, II, III or IV depending on thenature of the building occupancy. Table 1604.5 in the IBC2006 Code Book defines each of the four categories in de-tail. In summary the four categories are:

• Category I - structures that represent a low hazard to human life in the event of a failure.

• Category III - structures that represent a substantial hazard to human life in the event of a failure.

• Category IV - structures designated as essential facilities.

• Category II - any structures not listed in I, III or IV.

Site Classification – A, B, C, D, E or F based on the typesof soil and their engineering properties. Table 1613.5.2 inthe IBC 2006 Code Book defines each of the categories indetail. IBC specifies site class “D” when soil properties areunknown.

ecnailpmoC fo etacifitreCs r e w o T g n i l o o C T U , T A U , S S U , T A

srelooC tiucriC desolC WBTA s r e s n e d n o C e v i t a r o p a v E E - C T A HTC,

s n o i s i v o r P d a o L d n i W d n a c i m s i e S e h t d e e c x e r o t e e m o t d e i f i t r e c e r A . t c e j o r p s i h t r o f s e d o c g n i d l i u b e l b a c i l p p a e h t n i h t r o f t e s

l l a g n i w o l l o f d e r u t c a f u n a m n e e b e v a h s t c u d o r p e s e h T . s m a r g o r p e c n a r u s s a y t i l a u q e l b a c i l p p a

: s e d o C g n i d l i u B e l b a c i l p p A 6 0 0 2 C B I

7 - E C S A 0 0 0 5 A P F N

: t r o p e R d e c n e r e f e R 7 8 3 3 4 - A M V

: y c n e g A l a v o r p p A p u o r G g n i t l u s n o C c i m s i e S C M V

.secivreS dna stcudorP refsnarT taeH ni stsilaicepS...OCPAVE 1 0 0 C O C C B I D I

When using the EVAPCO selection software to make aselection, these calculations are already incorporatedinto the selection process. Simply enter the requiredfactors and the Seismic Design Force and Wind Loadwill be calculated automatically!!

Wind Load Map Courtesy IBC 2006 Text –See full-sized map for location specific values


16


Maximum Spectral Response Acceleration (Ss) – Nu-merical value found using the U.S. Geological (USGS) databased on the Zip Code of the project. This data point canbe determined using the Ground Motion Parameter Cal-culator at http://www.usgs.gov/. Note the calculator as-sumes a site classification of B for the 0.2 secondmaximum Ss. The site coefficient (Fa), defined below, willcorrect for the actual site classification.

Site Coefficient (Fa) – Values ranging from 0.8 to 2.5 de-termined based on the Ss and the Site Classification. Table1613.5.3(1) in the IBC 2006 Code Book defines these values.

Design Spectral Response Acceleration (SDS) – A cal-culated value using the values for Ss and Fa.

Amplification Factor (ap) – 2.5 for flexible componentsor flexibly attached components. Due to its low inherentnatural frequencies, most evaporative cooling equipmentfalls under the definition of flexible. Therefore the de-fault for Cooling Towers is 2.5. See Table 13.6-1 in theAmerican Society of Civil Engineers (ASCE) Standard 7-05,to which IBC often references, for more information.

Response Modification Factor (Rp) – 2.5 for non-iso-lated evaporative cooling equipment. 2.0 for vibrationisolated evaporative cooling equipment. Table 13-6.1 ofASCE 7-05 provides additional information.

Component Operating Weight (Wp) – This weight termhas been removed from the equation below, becauseEVAPCO is expressing the force in terms of g’s and not lbs.

Importance Factor (Ip) – 1.5 for Occupancy Category IV,life safety components required to function after a seis-mic event or component containing hazardous content.1.0 for all other components. ASCE 7-05 Section 13.1.3provides additional detail on importance factors.

Installation Location (Z/h) – 0 for units installed atground level. 1.0 for units installed on a rooftop. PerASCE 7-05 Section 13.3, z = the height of the point of at-tachment of the component and h = the relative roofheight.

Seismic Design Force, (Fp) – “G-force” that the unitmust be able to withstand. This number is calculatedusing the factors described above. The New AT is offeredwith a choice of two structural design packages, consist-ing of:

– Standard Structural Design ≤ 1.0g – Upgraded Structural Design – up to 5.12g (the

maximum value for North America)

Seismic Load Sample Calculation

The following example demonstrates the procedure fordetermining which structural design package a Commu-nity Hospital located in Charleston, SC (zip code 29401)would require under the latest version of IBC. In this ex-ample, the cooling tower will be installed on a roof, ap-proximately 60 feet above grade. The unit will also beinstalled with a vibration isolation system.

Step 1: Calculate the Design Spectral Response Accelera-tion (SDS)

Where:

SS = 1.495; using the USGS Ground Motion Parameter Calculator

Fa = 1.0; from Table 1613.5.3(1) in the IBC 2006 CodeBook assuming a Site Classification of D

Step 2: Calculate the Seismic Design Force (Fp )

Where:

ap = 2.5; the default for cooling towers and closed circuit coolers

SDS = 0.9966; as calculated in Step 1

Wp = 1.0; the default for cooling towers and closed circuit coolers

Rp = 2.0; the default for isolated equipment

Ip = 1.5; the default for life safety components

z/h = 1.0; the default for units on a rooftop

In order to meet Code requirements, the unit and its an-chorage must be constructed to withstand 2.24 g. Thiswill require that the upgraded structure option be chosento meet the seismic requirements of this project. Becausethe seismic load requires the upgraded structural design,the wind load calculation results will not change the de-sign and are not required for this analysis.

Wind Load Calculations

The data required to calculate the wind load are:

Basic Wind Speed (V) – Numerical value, in miles perhour (mph) found in ASCE 7-05 Figures 6-1 (A,B,C).

SDS (Fa)(Ss)= 23 (1.0)(1.495)=0.9966= 2

3

FP 1+2 zh

= =0.4 (aP)(SDS)(WP) (1+2(1))=2.24g

RP

IP( )0.4 (2.5)(0.9966)(1)

2.01.5( )

( )

SDS (Fa)(Ss)= 23


17

Wind Directionality Factor (Kd) – 0.85 for buildingcomponents and cladding. Table 6-4 of ASCE 7-05 pro-vides additional information.

Occupancy Category – I, II, III or IV depending on thenature of the building occupancy. Table 1604.5 in the IBC2006 Code Book defines each of the categories in detail.This is the same Occupancy Category used in Seismic cal-culations.

Importance Factor (I) – Numerical value between 0.77and 1.15 based on the Basic Wind Speed and the Occu-pancy Category. These values are found in Table 6-1 ofASCE 7-05.

Exposure Category – B, C or D as defined in Section6.5.6.3 of ASCE 7-05.

Component Elevation (z) – The anchorage height ofthe unit in feet.

Nominal Height of the Atmospheric Boundary Layer(zg) - Numerical value based on Exposure Category. Thesevalues are found in Table 6-2 of ASCE 7-05.

3 second Gust-Speed power Law Exponent (α) - Nu-merical value based on Exposure Category. These valuesare found in Table 6-2 of ASCE 7-05.

Velocity Pressure Exposure Coefficient (Kz) – A calcu-lated value using the values for zg and α.

Topographic Factor (Kzt) – 1.0 default when topo-graphic effects are not a factor. ASCE 7-05 Section 6.5.7provides additional detail on topographic factors.

Velocity Pressure (qz) – This number in pounds persquare foot (psf) is calculated using the factors describedabove. The New AT is offered with a choice of two struc-tural design packages, consisting of:

– Standard Structural Design - up to 60 psf – Upgraded Structural Design - up to 145 psf (the

maximum value for North America)

Wind Load Sample Calculation

The following example demonstrates the procedure todetermine which structural design package a Condo-minium Building located in Miami, FL (zip code 33101)would require under the latest version of IBC. In this ex-ample, the cooling tower will be installed on the top ofthe 60 foot tall building.

Step 1: Calculate the Exposure Category Coefficient (Kz)

Where:

z = 60; Installation Height

zg = 700; from ASCE 7-05 Table 2 using an ExposureCategory of D.

α = 11.5; from ASCE 7-05 Table 2 using an ExposureCategory of D.

Step 2: Calculate the Velocity Pressure (qp)

Where:

Kz = 1.31; as calculated above.

Kzt = 1.0; default when topographic effects are not afactor.

Kd = 0.85; default for building components andcladding.

V = 145; wind speed from ASCE 7-05 Figure 6-1.

I = 1.0; Based on an Occupancy Category of II.

In order to meet Code requirements, the unit and its at-tachments must be designed and constructed to with-stand 59.93 psf. This means that the standard ATconstruction design will meet the wind load requirementsof this project. Because the wind load does not requirethe upgraded structural design, the seismic load calcula-tion must also be completed to determine if the resultswill change the unit design.

( )KZ = 2.01 a

2zzg( )

( )( )KZ = 2.01 a

2 2

11.5zzg( ) = 2.01 = 1.31

60700( )

qp = 0.00256(Kz)(Kzt)(Kd)(V2)(I) =

0.00256(1.31)(1.0)(0.85)(1452)(1.0) = 59.93psf



18


Notes:

19† Mark owned by the Cooling Technology Institute

TECHNOLOGY FOR THE FUTURE, AVAILABLE TODAY!

†

UT


20

SU P E R LO W SO U N D FA N

Solutions for Sound Sensitive Applications

The ULTRA-QUIET Cooling Tower comes standard with Super Low Sound Fan that reduces the overall sound generatedfrom the top of the cooling tower. The ULTRA-QUIET cooling tower provides deep sound reductions and can be used incombination with Water Silencers to produce the lowest sound levels commercially available. Consult EVAPCO's iESselection software for unit sound levels. If a detailed analysis or full octave band datasheet is required for your applica-tion, please consult your EVAPCO Sales Representative.

The Super Low Sound FanReduced Sound Levels versus Model AT Standard FanEVAPCO's Super Low Sound Fan on the ULTRA-QUIET cooling tower utilizes an extremely wide chord blade design available for sound sensitive applications where the lowest sound levels are desired. The fan is one piece molded heavyduty FRP construction utilizing a forward swept blade design. The Super Low Sound Fan reduces sound levels 9 to 15dB(A) compared to the Model AT standard fan.

Narrow Band Spectrum Analysis

Frequency (Hz)

Sou

nd

Pre

ssu

re L

evel

(d

B)

Standard Axial Fan

Super Low Sound Fan

Blade Passing FrequenciesBlade Passing FrequenciesBlade Passing FrequenciesImproved Sound Quality versus Model AT Standard Fan

The SUPER Low Sound Fan on the ULTRA-QUIET cooling tower reduces sound levels 9-15 dB(A) and eliminates audible bladepassing frequencies indicative of straight bladed axial type fans.

Refer to the Narrow Band Spectrum graph which shows howstraight bladed axial fans produce blade passing frequencies –the same phenomena that produce the signature pulsating helicopter noise.

The blade passing frequencies are audible spikes in sound pressure levels, but are not apparent in the octave band sound spectrum.

Family of Super Low Sound Fans

10 dB(A) decrease is half as loud! The ULTRA-QUIET tower reduces noise pollution by more than 50%.(Refer to Sound Basics on Page 21)

The Super Low Sound Fan on the ULTRA-QUIET Cooling Tower reduces sound levels and betters the sound quality!


21

SO U N D BA S I C S

SoundSound is the alteration in pressure, stress, particle displace-ment and particle velocity, which is propagated in an elasticmaterial. Audible sound is the sensation produced at the earby very small pressure fluctuations in the air.

Sound PressureSound pressure is the intensity of sound. Sound pressure, Lp

in decibels is the ratio of measured pressure, P in the air to areference sound pressure, PO = 2x10–5 Pascal following thefollowing formula:

Lp (dB) = 10 log10 ( P2/ PO2)

The most important point to understand about sound pressure level is that sound pressure level is what is actually being measured when sound data isrecorded. Microphones that measure sound are pressuresensitive devices that are calibrated to convert the soundpressure waves into decibels.

Sound PowerSound Power is the energy of sound. Sound power, Lw indecibels is the ratio of the calculated sound power, W to a reference power, Wo =1 picowatt, according to the following formula:

Lw (dB) = 10 log10 (W/Wo)

The most important point to remember about sound power level is that sound power level is not a meas-ured value, but is calculated based on the measuredsound pressure.

Adding Multiple Sound SourcesSince the decibel is a logarithmic function, the numbers arenot added linearly. Therefore, two 73 dB sound sourcesadded together do not equal 146 dB. The resultant soundwould actually be 76 dB. The following table shows how toadd decibels from two sound sources.

Difference in Add to the higherdB Level dB Level

0 to 1 32 to 3 24 to 8 1

9 or greater 0

25Ft. Candles

50

100 ft. 100 ft.25 ft.0

25 ft.50 ft. 50 ft.

Ft. Candles100

Ft. Candles

“SOUND PRESSURE”

76 dB(A)

73 dB(A) 73 dB(A)

100W

“SOUND POWER”

Similar to the wattage of a light bulb that does notchange the farther one is away from the light bulb,sound power does not vary with distance.

Similar to the intensity coming from a light bulbwhich gets dimmer as one gets further and furtheraway, sound pressure decreases in decibels as yourear gets further from the sound source.

Background in Sound Basics


22

SO U N D BA S I C S

Sound Science and Cooling Towers

dB(A) Formula and Conversions:

f=8000

dB(A) =10 log10 10 ((dB+Cf) /10)

f=63

Typical Sound Pressure Levels of Well Known Noises:

Jet Airplane, 150 feet away 140 dB(A)Painful 130 dB(A)Very Uncomfortable 120 dB(A)Circular Saw 110 dB(A)Nightclub 100 dB(A)Semi Truck 90 dB(A)Sidewalk of a Busy Road 80 dB(A)Household Vacuum, 3 feet away 70 dB(A)Normal Conversation 60 dB(A)Inside Average Home 50 dB(A)Quiet Library 40 dB(A)Bedroom at Night 30 dB(A)

WaterNoise

Fan Noise

High FrequencySelf Attenuating

Low-Mid FrequenciesTravel through andaround Obstructions

Sound Frequency

Fan Noise• Low / Mid frequencies that travel long distances,

through walls, and around obstructions.

• Very difficult to attenuate. Reduce fan noise by usingLow Sound Fans.

• Dominates what is measured and heard at the cooling tower and at the sound sensitive location.

Water Noise• High frequencies that attenuate naturally with

distance. Attenuated easily by walls, trees or other obstructions.

• Totally masked and drowned out by fan noise at ashort distance away from the cooling tower.

Notable Facts about Sound:

• +/- 1 dB(A) is inaudible to the human ear• Decreasing a noise source by 10 dB(A) sounds half as

loud to the human ear

Sound Pressure – The A-Weighted ScaleThe A-weighted scale, dB(A) is a means to translate what a sound meter microphone

measures to how the human ear perceives the sound.

where: Cf = correction factor per banddB = measured sound pressure

let: Zf = (dB + Cf)/10

Band Center Frequency Sample Cf Zf

Freq. (Hz) Range (Hz) Data (dB) (dB)

1 63 44-88 68 -26.2 4.18

2 125 89-175 76 -16.1 5.99

3 250 176-350 77 -8.6 6.84

4 500 351-700 73 -3.2 6.98

5 1000 701-1400 70 0 7.00

6 2000 1401-2800 68 +1.2 6.92

7 4000 2801-5600 71 +1.0 7.20

8 8000 5601-11200 73 -1.1 7.19

Example calculation of the dB(A) formula using the Sample Data above.

dB(A) = 10 log10 10(Z1) + 10(Z2) + 10(Z3) + 10(Z4) + 10(Z5) + 10(Z6) + 10(Z7) + 10(Z8)

= 10 log10 (67114245.2) = 78.3 dB(A)


23

SP E C I F Y I N G SO U N D

Specifying Sound–A Performance Specification

Specify sound pressure in dB(A) measured 5 feet above the fan discharge during full speed operation.• All manufacturers can meet a performance specification with Low Sound Options• Fan noise is what matters. 5 feet above the fan is where it matters.

Measurement LocationPer Cooling Technology Institute Standard ATC-128

Sound Microphone location 5 feet above the cooling tower fan cowl edge at a 45° angle.

This position assures accurate sound measurements by eliminating a source of uncertainty by taking the microphone out of the high velocity fan discharge air.

Easy VerificationAt 5 feet from the cooling tower, a sound meter records only cooling tower noise. Interested parties can easily verify theactual noise coming from the cooling tower against the specified sound data with good certainty.

If sound were specified at 50 feet or some greater distance from thesound sensitive location, there is increased uncertainty in the measureddata due to other possible sound sources within the 50 foot radius of thesound microphone.

Sound QualitySound coming from the top of the cooling tower is comprised of low-and mid-frequency fan noise. Low- and mid-frequency fan “rumble” isvery difficult to attenuate. Fan rumble travels through everything andaround everything and what is audible at any sound sensitive location.

Sound coming from the sides of the cooling tower is comprised of highfrequency water noise, is much less objectionable than fan noise and at-tenuates naturally with distance.

Acoustical Shadow*“Subjective reactions to the overall noise generated by coolingtowers indicate that as one walks away from a tower intake, apoint is reached where the water noise is masked by the fan noise.The point coincides with the point at which one emerges from theacoustical shadow of the tower structure, which shields intakewater noise from discharge fan noise.” *Seelbach & Oran, “What To Do About Cooling Tower Noise”, Industrial Acoustics Company.

Sound measured at the side of a cooling tower is inside theacoustical shadow of the noise emitted from the top. Outside the acoustical shadow, the low- and mid-frequency fan noise completely masks the high frequency water noise.

45°

MicrophoneLocation

5‘

WaterNoise

Fan Noise

High FrequencySelf Attenuating

Low-Mid FrequenciesTravel through andaround Obstructions

AcousticalShadow

Microphone

NewCoolingTower

RooftopAir

Handler

ExistingCoolingTower

RoadTraffic

50 Feet

50 Feet

50 Feet

50 Feet

50 Feet

50 Feet50 Fe

et

50 Fe

et

50 Fe

et

50 Fe

et

50 Fe

et

50 Fe

et

Specify fan noise because it matters! Specify fan noise where it matters!


24

Notes:

25

MADE IN USA

US

S

†

† Mark owned by the Cooling Technology Institute


26

AA 110000%% CCOORRRROOSSIIOONN--RREESSIISSTTAANNTT DDEESSIIGGNN

EVAPCO, Inc., continues to set the standard in the cooling towerindustry with the Ultra-SST. The Ultra-SST is the finest factoryassembled cooling tower ever offered. It is the ONLY ALL StainlessSteel cooling tower offered with a Type 316 SS basin ASSTANDARD! Constructed of the highest quality materials, theUltra-SST provides the Ultimate in corrosion protection.

Type 304 Stainless Steel• Upper casing and structure• Mechanical equipment support• Fan Cowl and Fan Guard

PVC• Patented EVAPAK® Fill• Water distribution system• Air inlet louvers• Drift eliminators

Type 316 Stainless Steel• Cold water basin• Vertical support columns• Air inlet louver frames

EVAPCO offers the Ultra-SST cooling tower with a standard Type 316 stainlesssteel cold water basin. Since the cold water basin provides the structural supportfor the unit and is the area most susceptible to corrosion, it is constructed withthe highest quality materials. The Ultra-SST is the ONLY cooling tower in theindustry that offers this protection as standard.

The chemical compositions of Type 304 and 316 stainless steel are similar.However, there are several differences in their makeup that allow Type 316 SS tohave better corrosion resistance than Type 304 SS. Type 316 SS containsmolybdenum (304 SS does not) and has a greater percentage of nickel than Type304 SS. The molybdenum–bearing Type 316 SS provides superior corrosionresistance to a wide variety of environments. Also, resistance of stainless steels topitting and/or crevice corrosion in the presence of chloride or other halide ions isenhanced by molybdenum content. A measure of pitting resistance is expressedby the PREN (Pitting Resistance Equivalent, including Nitrogen) calculation. TheType 316 SS PREN of 24 is considerably higher than the Type 304 SS PREN of 19,reflecting the better pitting resistance provided by Type 316 SS due to itsmolybdenum content.

It is generally accepted that Mo-bearing Type 316 SS material can accommodatewater with chloride content ten times greater than Type 304 SS. Furthermore,Type 316 SS eliminates the aesthetic degradation associated with staining of Type304 SS. Don’t settle for lesser Series 300 stainless steel! Type 316 SS materialoffers the best protection against corrosion.

Once again, EVAPCO raises the quality standard in the cooling tower industrywith the Ultra-SST!

The Ultra-SST is a 100% corrosion-resistant coolingtower constructed of stainless steel. The premiumcomponents include:

Complete 316 SS Construction Available

For a small price addition, the Ultra-SST can be upgraded tocomplete Type 316 SS construction.

Certified-Standard 201

• Independent Certification.• No costly field performance

tests required.

Smooth Flow Fan• Soft-connect blade to hub design.• Variable Frequency Drive friendly.• Eliminates critical blade passing

frequencies at any speed.• Not available on 4’ wide units.


27

Exclusive 5 Year Complete Product Warranty

• Covers the complete drive system, including the motor,on belt or gear drive units.

• Covers the complete cooling tower from the cold waterbasin to the fan discharge screen.

• Standard on all Ultra-SST Models.

Optional Motor Davit and Working Platform Motor Davit• Motor davit and bracket option for easy motor removal.• Also available for Gearbox removal.

Platform• Platform and ladder arrangement available as an option.• Provides additional working surface for the service mechanic.

CCOOMMPPLLEETTEE SSTTAAIINNLLEESSSS SSTTEEEELL CCOONNSSTTRRUUCCTTIIOONN

Available in 55 Cross Sections and a capacity range of 32 to 4475 NominalTons (139 to 19,669kW)! The Ultra-SST has a model for every application.

Consult the iES EquipmentSelection Program for Selectionsand Technical Assistance includingApplications, Layout, andStructural Steel Support.

If there is an application for whichthe the standard catalog productline does not work, EVAPCO willmake a cooling tower that will fityour requirement!

EEXXCCLLUUSSIIVVEE

304

SS C

asin

g

EVAPCO unequivocallyguarantees the thermalperformance of theUltra-SST cooling towerproduct line.

316

SS B

asin

Quick Release Louver Fasteners

• New design allows quick removal of louvers.• Louver fastener is large and easy to release.• Louver fastener remains on the unit–eliminating

the possibility of missing hardware.

Water Distribution System• Non-corrosive PVC construction with new EvapJet™

nozzles.• Large 1” wide orifice nozzles prevent clogging and are

threaded for easy removal and positive positioning.• 66% fewer nozzles!• System branches have threaded end caps to assist

with debris removal.

NEW! EvapJet™ Nozzle


28

ME C H A N I C A LSP E C I F I C AT I O N S

SECTION 23 65 00 – FACTORY-FABRICATED COOLING TOWERSPART 1 – GENERAL1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, includ-ing General and Supplementary Conditions and Division 1Specification Sections, apply to this section.

1.2 SUMMARY: A. This Section includes factory assembled and tested, open

circuit, induced draft counterflow cooling tower.1.3 SUBMITTALS

A. General. Submit the following:1. Certified drawings of the cooling tower, sound data,recommended steel support indicating weight loadings,wiring diagrams, installation instructions, operation andmaintenance instructions, and thermal performanceguarantee by the manufacturer.

1.4 QUALITY ASSURANCEA. Verification of Performance:

1. Test and certify cooling tower thermal performance ac-cording to CTI Standard 201.2.Test and certify cooling tower sound performance ac-cording to CTI ATC-128.

B. Meet or Exceed energy efficiency per ASHRAE 90.1.1.5 WARRANTY

A. Motor/Drive System: Five (5) year comprehensive war-ranty against materials and workmanship includingmotor, fan, bearings, mechanical support, sheaves, bush-ings and belt.

B. Unit (AT & UT): One (1) year from start-up, not to exceedeighteen (18) months from shipment on the unit.

C. Unit (USS): Five (5) year comprehensive warranty againstmaterials and workmanship for complete unit.

PART 2 - PRODUCTS2.1 MANUFACTURERS

A. Manufactures: Subject to compliance with requirements,provide cooling towers manufactured by one of the fol-lowing: 1. EVAPCO, Inc.2. Approved Substitute

2.2 MATERIALSA. Galvanized Sheet Steel complying with ASTM A 653/A

653M and having G-235 designation.B. Optional Type 304 and/or 316 Stainless Steel as specified.

2.3 INDUCED-DRAFT, COUNTERFLOW COOLING TOWERSA. Description: Factory assembled and tested, induced draft

counterflow cooling tower complete with fill, fan, lou-vers, accessories, and rigging supports.

B. Cooling Tower Characteristics and Capacities: Refer to theCooling Tower schedule.

C. Fan(s): 1. Type and Material (AT & USS): Axial propeller, individ-ually adjustable wide chord blade extruded aluminuminstalled in a closely fitted cowl with venturi air inlet formaximum efficiency, covered with a heavy gauge hotdipped Galvanized (AT) or Stainless Steel (USS) fanguard.2. Type and Material(UT): Axial propeller, one piece heavyduty FRP hub and blade construction. Galvanized steelclosely fitted fan cowl with venturi air inlet for maximumfan efficiency, covered with a heavy gauge hot dip galva-nized steel fan guard. (Optional Type 304 stainless steel)3. Maximum sound pressure level of _____dB(A) meas-ured at 5 feet above the fan discharge during full speedoperation in accordance with CTI Standard ATC-128.

D. Water Distribution System: Non-corrosive materials.1. Evenly distribute of water over fill material with pres-surized spray tree.

a. Pipes: Schedule 40 PVC, Non-corrosive Materialsb. Nozzles: Non-clogging, ABS Plastic, threaded intobranch piping.

2. Maximum pressure at inlet shall be ____ psig.

E. IBC Compliance: The unit structure shall be designed,analyzed, and constructed in accordance with the latestedition of the International Building Code (IBC) Regula-tions for seismic loads up to _____ g or wind loads up to__ psf.

F. Collection Basin Material: Galvanized Steel (AT/UT – Type304 Stainless Steel Optional) or Type 316 Stainless Steel(USS):1. Removable stainless-steel strainer with openingssmaller than nozzle orifices.2. Joints: Bolted and sealed watertight or welded.3. Overflow, makeup and side drain connections4. Flume plate between cells (for multiple-cell units) orEqualizer connection (for multiple-cooling-tower system).

G. Casing: Galvanized Steel (AT/UT) or Type 304 StainlessSteel (USS – Type 316 Stainless Steel Optional):1. Casing panels shall totally encase the fill media toprotect the fill from damage due to direct atmosphericcontact.2. Fasteners: Corrosion resistance equal to or better thanmaterials being fastened.3. Joints: Sealed watertight.4. Welded Connections: Continuous and watertight

H. Fill Media: PVC; resistant to rot, decay and biological at-tack; formed, crossfluted bonded together for strengthand durability in block format for easy removal and re-placement; suitable for use as a working surface; self extin-guishing with flame spread rating of 5 per ASTM E84-81a;able to withstand continuous operating temperature of130ºF; and fabricated, formed and installed by the manu-facturer to ensure water breaks up into droplets.

I. Drift Eliminators: Same material as Fill. 0.001% drift rate. J. Air Inlet Louver Screens: Formed PVC mounted in G-235

galvanized (or Type 316 stainless) steel frames for easy re-moval; designed “Sight Tight” to completely block directsunlight from entering and water from splashing out ofthe cooling tower.

K. Water Level Control: Brass mechanical makeup watervalve and plastic float with an adjustable linkage.

2.4 MOTORS AND DRIVESA. General requirements for motors are specified in Division

15 Section “Motors”.B. Enclosure Type: TEAO or TEFCC. Motor Speed: Single Speed (Option: VFD Duty, 2-speed)D. Drive: Power Band Belt designed for 150% of the motor

nameplate HP.1. Belt: Mutli-groove, solid back V-belt type neoprene re-inforced with polyester cord. 2. Sheaves: Aluminum alloy if located inside theairstream.3. Bearings: Heavy duty, self-aligning pillow block bear-ings with lubrication lines extended to side access door.Minimum L10 life for bearings shall be 75,000 hours. Pro-vide extended grease lines and fittings. 4. Vibration Cutout Switch: Mechanical switch to de- ener-gize fan motors if excessive vibration in NEMA 4 enclosure.

2.5 MAINTENANCE ACCESSA. Internal Working / Service Platforms: Provide a complete

internal working platform and ladder system for serviceof all drive components. A suitable working platformmay be constructed of the fill media for counterflowcooling towers. If a crossflow tower is used, provide aninternal walkway with ladder and elevated working plat-form to allow for service and maintenance to motor anddrive assembly.

B. Handrails/Grabrails: Galvanized steel pipe complying with29 CFR 1910.23. If access to fan deck is required, supply aperimeter handrail with ladder from grade to fan deck.

C. Ladders: Aluminum, sloped “ships type” with grabrail orvertical complying with 29 CFR 1910.27.

29

EN

GIN

EER

ING

DA

TA

TTHHEERRMMAALL PPEERRFFOORRMMAANNCCEE

MODELS: AT/USS 14-64 to 14-96Thermal performance certified by the Cooling TechnologyInstitute (CTI) in accordance with CTI Standard STD-201

†

TOWER CAPABILITY IN USGPM AT THE FOLLOWING TEMPERATURE CONDITIONS (°F)EWT 90° 95° 90° 95° 90° 95° 90° 95° 95° 100°

Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 14-64 2 131 101 121 92 106 81 91 70 122 94AT 14-74 2 145 114 134 105 119 94 104 83 136 107AT 14-84 3 154 120 142 110 125 98 108 85 144 112AT 14-94 3 167 133 155 123 139 111 122 99 157 126AT 14-66 3 226 175 208 160 183 142 158 124 211 164AT 14-76 3 245 195 228 181 204 162 179 144 230 184AT 14-86 5 264 208 244 191 217 171 189 151 247 195AT 14-96 5 282 227 263 211 236 191 208 171 266 215


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 14-64 2 115 89 98 122 76 95 78 103 61 81AT 14-74 2 128 102 111 135 89 108 90 117 74 94AT 14-84 3 135 106 116 143 92 113 94 123 75 97AT 14-94 3 148 119 130 156 105 126 107 136 88 111AT 14-66 3 198 155 170 210 134 165 137 179 109 142AT 14-76 3 218 175 191 230 154 185 157 200 129 162AT 14-86 5 233 185 202 246 162 196 165 213 134 171AT 14-96 5 252 205 222 265 181 216 184 232 153 190

To Make a Selection:Locate the column with the desired operating temperature conditions. Read down the column until you find the GPM equal to or greater than the flowrequired. Read horizontally to the left to find the model number of the unit that will perform the duty. For selections and conditions other than thosestated, consult your iES Selection Program or local EVAPCO representative.

30 † Mark owned by the Cooling Technology Institute

EENNGGIINNEEEERRIINNGG DDAATTAA && DDIIMMEENNSSIIOONNSS

31

NOTE: (1) An adequately sized bleed line must be installed in the cooling tower system to prevent build-up of impurities in the recirculated water.(2) Do not use catalog drawings for certified prints. Dimensions and weights are subject to change.(3) Adequate spacing must be allowed for access to the cooling tower.

� L = Lower Section, U = Upper SectionNote: Fan cowl height includes fan guard which ships factory mounted.

Weights (LBS) DimensionsFan Air

Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H B P L

AT 14-64 1080 1760 L 560 2 9,600 8' 5-5/8" 5' 9-1/4" 6' 3" 3' 11-3/4"AT 14-74 1160 1840 L 640 2 9,400 9' 5-5/8" 6' 9-1/4" 7' 3" 3' 11-3/4"AT 14-84 1130 1810 U 570 3 10,900 8' 5-5/8" 5' 9-1/4" 6' 3" 3' 11-3/4"AT 14-94 1210 1890 L 640 3 10,700 9' 5-5/8" 6' 9-1/4" 7' 3" 3' 11-3/4"AT 14-66 1390 2460 L 730 3 15,300 8' 5-5/8" 5' 9-1/4" 6' 3" 5' 11-3/4"AT 14-76 1490 2560 L 830 3 15,000 9' 5-5/8" 6' 9-1/4" 7' 3" 5' 11-3/4"AT 14-86 1410 2480 L 730 5 18,000 8' 5-5/8" 5' 9-1/4" 6' 3" 5' 11-3/4"AT 14-96 1510 2580 L 830 5 17,600 9' 5-5/8" 6' 9-1/4" 7' 3" 5' 11-3/4"

MACCESS DOOR

ACCESSDOOR

MM

48 1/4 L

54 1/4

3

13

1 MPT MAKE-UP 2 FPT OVERFLOW

2 MPT DRAIN

4” MPT OUTLET

19 3/4

5 7/8

38 1/824 1/8

P

4” MPT INLET

24 1/8

B

32 3/8

12 7/8

H

12 3/4

MODELS: AT/USS 14-64 to 14-96One-Cell Cooling Towers


MODELS: AT/USS 14-69 to 14-912Thermal performance certified by the Cooling TechnologyInstitute (CTI) in accordance with CTI Standard STD-201

†


Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 14-69 (2) 2 304 233 279 213 245 187 210 163 283 218AT 14-79 (2) 2 335 264 310 243 276 217 240 192 314 249AT 14-89 (2) 3 356 277 329 254 290 226 251 198 333 260AT 14-99 (2) 3 386 308 359 285 321 257 282 228 362 291AT 14-612 (2) 3 459 356 423 326 373 289 322 253 429 333AT 14-712 (2) 3 499 397 464 367 414 330 363 293 469 375AT 14-812 (2) 5 536 422 497 389 442 347 384 307 503 397AT 14-912 (2) 5 574 461 535 429 481 388 424 347 540 437


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 14-69 (2) 2 265 205 227 282 176 219 180 239 141 187AT 14-79 (2) 2 296 235 258 313 206 250 209 270 170 217AT 14-89 (2) 3 313 245 269 332 213 261 217 284 174 226AT 14-99 (2) 3 343 276 300 362 244 292 248 315 204 256AT 14-612 (2) 3 403 315 346 427 272 335 278 364 222 288AT 14-712 (2) 3 444 356 388 468 313 377 319 406 262 330AT 14-812 (2) 5 475 376 412 501 329 399 335 433 272 347AT 14-912 (2) 5 513 416 451 539 369 439 375 471 312 387




33


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H B P L

AT 14-69 2000 3600 L 1010 (2) 2 21,100 8' 5-5/8" 5' 9-1/4" 6' 3" 8' 11-3/4"AT 14-79 2160 3760 L 1170 (2) 2 20,800 9' 5-5/8" 6' 9-1/4" 7' 3" 8' 11-3/4"AT 14-89 2100 3700 U 1090 (2) 3 24,000 8' 5-5/8" 5' 9-1/4" 6' 3" 8' 11-3/4"AT 14-99 2260 3860 L 1170 (2) 3 23,600 9' 5-5/8" 6' 9-1/4" 7' 3" 8' 11-3/4"

AT 14-612 2530 4700 U 1270 (2) 3 30,900 8' 5-5/8" 5' 9-1/4" 6' 3" 11' 11-3/4"AT 14-712 2730 4900 L 1460 (2) 3 30,400 9' 5-5/8" 6' 9-1/4" 7' 3" 11' 11-3/4"AT 14-812 2570 4740 U 1310 (2) 5 36,400 8' 5-5/8" 5' 9-1/4" 6' 3" 11' 11-3/4"AT 14-912 2770 4940 L 1460 (2) 5 35,700 9' 5-5/8" 6' 9-1/4" 7' 3" 11' 11-3/4"

MACCESS DOOR

MACCESS DOOR

ACCESSDOOR

ACCESSDOOR

M

48 1/4 L

54 1/4

3

13

1 MPT MAKE-UP 2 FPT OVERFLOW

2 MPT DRAIN

OUTLET*

19 3/4

5 7/8

38 1/824 1/8

P

INLET*

24 1/8

B

32 3/8

12 7/8

H

12 3/4

M M

MODELS: AT/USS 14-69 to 14-912One-Cell Cooling Towers

*14-69 to 14-99(1) 4" Inlet

(1) 4" Outlet

*14-612 to 14-912(1) 6" Inlet

(1) 6" Outlet


� L = Lower Section, U = Upper SectionNote: Fan cowl height includes fan guard which ships factory mounted.


MODELS: AT/UT/USS 19-56 to 19-98Thermal performance certified by the Cooling TechnologyInstitute (CTI) in accordance with CTI Standard STD-201

†


Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 19-56 5 450 345 413 315 363 278 311 242 419 323AT 19-66 7.5 491 380 452 347 398 308 343 269 458 356AT 19-76 7.5 534 425 496 393 443 352 388 312 502 401AT 19-86 10 578 462 538 428 482 386 424 344 543 437AT 19-96 15 650 525 606 490 546 447 485 404 612 499AT 19-28 5 551 422 506 385 443 339 379 294 512 394AT 19-38 7.5 594 457 546 419 480 370 413 322 553 428AT 19-48 10 634 491 585 450 515 400 444 350 592 461AT 19-58 7.5 642 508 596 469 531 421 464 371 602 479AT 19-68 10 690 549 641 508 573 457 503 406 648 519AT 19-78 10 709 572 661 533 595 485 528 438 668 543AT 19-88 15 752 603 700 560 628 505 553 451 708 571AT 19-98 15 784 633 731 591 658 539 585 487 739 602


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 19-56 5 393 304 336 418 261 325 267 354 210 278AT 19-66 7.5 430 336 369 456 290 358 296 389 237 307AT 19-76 7.5 475 381 414 500 335 403 341 434 279 352AT 19-86 10 515 415 451 542 367 439 374 473 308 386AT 19-96 15 581 477 514 611 427 501 434 536 369 446AT 19-28 5 480 371 410 511 318 397 325 433 254 338AT 19-38 7.5 519 403 445 551 348 431 356 469 281 369AT 19-48 10 556 435 478 590 377 463 384 503 308 399AT 19-58 7.5 569 454 496 601 398 482 406 520 330 420AT 19-68 10 614 493 537 647 434 522 442 562 362 457AT 19-78 10 634 518 560 666 464 545 471 584 397 485AT 19-88 15 671 543 590 706 481 574 489 616 405 504AT 19-98 15 701 575 620 737 515 605 523 646 444 538




35


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P L AT/USS UT

AT 19-56 3060 5100 U 2010 5 26,500 9' 7-3/8" 5' 7-1/8" 7' 2-1/2" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 19-66 3100 5140 U 2050 7.5 30,200 9' 7-3/8" 5' 7-1/8" 7' 2-1/2" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 19-76 3300 5340 U 2250 7.5 29,700 10' 7-3/8" 6' 7-1/8" 8' 2-1/2" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 19-86 3330 5370 U 2280 10 32,500 10' 7-3/8" 6' 7-1/8" 8' 2-1/2" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 19-96 3620 5660 U 2570 15 36,300 11' 7-3/8" 7' 7-1/8" 9' 2-1/2" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 19-28 3450 5870 U 2280 5 31,300 9' 7-3/8" 5' 7-1/8" 7' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-38 3490 5910 U 2320 7.5 35,700 9' 7-3/8" 5' 7-1/8" 7' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-48 3520 5940 U 2350 10 39,200 9' 7-3/8" 5' 7-1/8" 7' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-58 3720 6140 U 2550 7.5 35,100 10' 7-3/8" 6' 7-1/8" 8' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-68 3750 6170 U 2580 10 37,800 10' 7-3/8" 6' 7-1/8" 8' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-78 4020 6440 U 2850 10 37,800 11' 7-3/8" 7' 7-1/8" 9' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-88 3810 6230 U 2640 15 43,700 10' 7-3/8" 6' 7-1/8" 8' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 19-98 4080 6500 U 2910 15 43,000 11' 7-3/8" 7' 7-1/8" 9' 2-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"

L

H

T

8' 5-1/2"

4' 1/4"

9

5 3/8

P

6 BFW/GROOVEDOUTLET

6 BFW/GROOVEDINLET

3 FPT OVERFLOW

3 FPT DRAIN

2 MPT MAKE-UP

50 3/4

3/8

2

23 1/8

14 7/8

6 1/2

3 7/8

50 3/4

21 3/8

ACCESS DOOR

F

30 5/8

Swing Out Radius of Motor Cover

ACCESS DOOR

MODELS: AT/UT/USS 19-56 to 19-98One-Cell Cooling Towers

��

F†


�� Outlet connection extends 3/8” beyond bottom flange.� L = Lower Section, U = Upper Section† Height includes fan guard which ships factory mounted.



†


Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 26-517 (2) 5 904 693 830 633 728 559 624 485 841 649AT 26-617 (2) 7.5 985 762 907 698 799 618 689 540 919 714AT 26-717 (2) 7.5 1072 853 996 788 890 708 779 627 1007 805AT 26-817 (2) 10 1160 928 1080 860 968 776 851 691 1091 878AT 26-917 (2) 15 1305 1054 1216 984 1096 897 974 812 1229 1002AT 28-217 (2) 5 1103 845 1013 770 888 678 759 588 1026 789AT 28-317 (2) 7.5 1189 915 1093 838 961 740 827 644 1107 858AT 28-417 (2) 10 1269 983 1170 901 1031 800 890 700 1185 923AT 28-517 (2) 7.5 1285 1017 1193 940 1063 842 928 743 1206 960AT 28-617 (2) 10 1381 1100 1284 1018 1148 915 1006 813 1298 1039AT 28-717 (2) 10 1419 1145 1323 1067 1191 972 1056 876 1336 1087AT 28-817 (2) 15 1505 1208 1402 1120 1258 1011 1108 902 1417 1143AT 28-917 (2) 15 1570 1268 1464 1183 1318 1078 1171 976 1479 1205


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 26-517 (2) 5 788 610 674 838 524 653 536 711 421 558AT 26-617 (2) 7.5 863 674 741 916 583 718 594 781 475 617AT 26-717 (2) 7.5 953 764 832 1005 672 809 684 872 559 707AT 26-817 (2) 10 1034 834 906 1089 737 882 750 949 618 774AT 26-917 (2) 15 1167 957 1032 1226 858 1006 871 1075 741 896AT 28-217 (2) 5 962 742 821 1023 636 794 650 867 509 677AT 28-317 (2) 7.5 1039 808 890 1103 697 862 713 939 563 739AT 28-417 (2) 10 1113 870 958 1182 754 928 769 1008 616 799AT 28-517 (2) 7.5 1139 909 992 1203 797 965 812 1041 661 841AT 28-617 (2) 10 1228 987 1074 1295 869 1044 884 1125 726 914AT 28-717 (2) 10 1268 1038 1120 1333 929 1092 943 1169 795 971AT 28-817 (2) 15 1343 1087 1180 1414 963 1148 979 1234 810 1010AT 28-917 (2) 15 1404 1151 1241 1475 1032 1210 1047 1294 888 1077




37

P

17'-1 1/2"

5 3/8

92 1/2

50 3/4

W 3/8

H

B

T

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN

(2) 6 BFW/GROOVEDOUTLET

(2) 6 BFW/GROOVEDINLET

23 1/8

14 7/8

6 1/2

3 7/8

2 50 3/4

101 1/2 2 1/2

21 3/8

ACCESS DOOR ACCESS DOOR

F

30 5/8 30 5/8


ACCESS DOOR

ACCESS DOOR

MODELS: AT/UT/USS 26-517 to 28-917Two-Cell Cooling Towers

��


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P W AT/USS UT

AT 26-517 6120 10200 U 2010 (2) 5 53,100 9' 11" 5' 7-1/8" 4' 3-7/8" 7' 6-1/8" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 26-617 6200 10280 U 2050 (2) 7.5 60,500 9' 11" 5' 7-1/8" 4' 3-7/8" 7' 6-1/8" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 26-717 6600 10680 U 2250 (2) 7.5 59,400 10' 11" 6' 7-1/8" 4' 3-7/8" 8' 6-1/8" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 26-817 6660 10740 U 2280 (2) 10 65,100 10' 11" 6' 7-1/8" 4' 3-7/8" 8' 6-1/8" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 26-917 7240 11320 U 2570 (2) 15 72,800 11' 11" 7' 7-1/8" 4' 3-7/8" 9' 6-1/8" 5' 11-7/8" 1' 7/8" 2' 1-7/8"AT 28-217 6900 11740 U 2280 (2) 5 62,600 10' 3-3/8" 5' 7-1/8" 4' 8-1/4" 7' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-317 6980 11820 U 2320 (2) 7.5 71,400 10' 3-3/8" 5' 7-1/8" 4' 8-1/4" 7' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-417 7040 11880 U 2350 (2) 10 78,300 10' 3-3/8" 5' 7-1/8" 4' 8-1/4" 7' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-517 7440 12280 U 2550 (2) 7.5 70,200 11' 3-3/8" 6' 7-1/8" 4' 8-1/4" 8' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-617 7500 12340 U 2580 (2) 10 76,900 11' 3-3/8" 6' 7-1/8" 4' 8-1/4" 8' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-717 8040 12880 U 2850 (2) 10 75,700 12' 3-3/8" 7' 7-1/8" 4' 8-1/4" 9' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-817 7620 12460 U 2640 (2) 15 87,500 11' 3-3/8" 6' 7-1/8" 4' 8-1/4" 8' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"AT 28-917 8160 13000 U 2910 (2) 15 86,000 12' 3-3/8" 7' 7-1/8" 4' 8-1/4" 9' 10-1/2" 7' 5-7/8" 1' 7/8" 2' 5-7/8"

F†

NOTE: (1) An adequately sized bleed line must be installed in the cooling tower system to prevent build-up of impurities in the recirculated water.(2) Do not use catalog drawings for certified prints. Dimensions and weights are subject to change.(3) Adequate spacing must be allowed for access to the cooling tower.(4) These models are available as (2) independent operating cells. Consult the factory for details.




†


Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 212-59 (2) 5 904 693 830 633 728 559 624 485 841 649AT 212-69 (2) 7.5 985 762 907 698 799 618 689 540 919 714AT 212-79 (2) 7.5 1072 853 996 788 890 708 779 627 1007 805AT 212-89 (2) 10 1160 928 1080 860 968 776 851 691 1091 878AT 212-99 (2) 15 1305 1054 1216 984 1096 897 974 812 1229 1002


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 212-59 (2) 5 788 610 674 838 524 653 536 711 421 558AT 212-69 (2) 7.5 863 674 741 916 583 718 594 781 475 617AT 212-79 (2) 7.5 953 764 832 1005 672 809 684 872 559 707AT 212-89 (2) 10 1034 834 906 1089 737 882 750 949 618 774AT 212-99 (2) 15 1167 957 1032 1226 858 1006 871 1075 741 896




39

8' 5-1/2" 12' 4-7/8"

H

56 1/4

3/8 71 7/8 5 1/8

66 1/2

67 5/8

50 5/8 23 1/8

14 7/8

6 1/2

3 5/8

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN


P

66 1/4


T

21 3/8 21 3/8

62 7/8

ACCESS DOOR

2

F

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

30 5/8

30 5/8




Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P AT/USS UT

AT 212-59 6120 10200 U 2010 (2) 5 53,100 10' 3-3/8" 5' 7-1/8" 7' 10-1/2" 1' 7/8" 2' 1-7/8"AT 212-69 6200 10280 U 2050 (2) 7.5 60,500 10' 3-3/8" 5' 7-1/8" 7' 10-1/2" 1' 7/8" 2' 1-7/8"AT 212-79 6600 10680 U 2250 (2) 7.5 59,400 11' 3-3/8" 6' 7-1/8" 8' 10-1/2" 1' 7/8" 2' 1-7/8"AT 212-89 6660 10740 U 2280 (2) 10 65,100 11' 3-3/8" 6' 7-1/8" 8' 10-1/2" 1' 7/8" 2' 1-7/8"AT 212-99 7240 11320 U 2570 (2) 15 72,800 12' 3-3/8" 7' 7-1/8" 9' 10-1/2" 1' 7/8" 2' 1-7/8"

��

F†





†


Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 215-29 (2) 5 1103 845 1013 770 888 678 759 588 1026 789AT 215-39 (2) 7.5 1189 915 1093 838 961 740 827 644 1107 858AT 215-49 (2) 10 1269 983 1170 901 1031 800 890 700 1185 923AT 215-59 (2) 7.5 1285 1017 1193 940 1063 842 928 743 1206 960AT 215-69 (2) 10 1381 1100 1284 1018 1148 915 1006 813 1298 1039AT 215-79 (2) 10 1419 1145 1323 1067 1191 972 1056 876 1336 1087AT 215-89 (2) 15 1505 1208 1402 1120 1258 1011 1108 902 1417 1143AT 215-99 (2) 15 1570 1268 1464 1183 1318 1078 1171 976 1479 1205


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 215-29 (2) 5 962 742 821 1023 636 794 650 867 509 677AT 215-39 (2) 7.5 1039 808 890 1103 697 862 713 939 563 739AT 215-49 (2) 10 1113 870 958 1182 754 928 769 1008 616 799AT 215-59 (2) 7.5 1139 909 992 1203 797 965 812 1041 661 841AT 215-69 (2) 10 1228 987 1074 1295 869 1044 884 1125 726 914AT 215-79 (2) 10 1268 1038 1120 1333 929 1092 943 1169 795 971AT 215-89 (2) 15 1343 1087 1180 1414 963 1148 979 1234 810 1010AT 215-99 (2) 15 1404 1151 1241 1475 1032 1210 1047 1294 888 1077




41

15' 4-7/8" 8' 5-1/2"

H

56 1/4

3/8 89 7/8 5 1/8

84 1/2

85 5/8

68 5/8 23 1/8

14 7/8

6 1/2

3 5/8

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN

(2) 6 BFW/GROOVED OUTLET

P

44 7/8


T

21 3/8 21 3/8

80 7/8

2

30 5/8

30 5/8

F

ACCESS DOOR

ACCESSDOOR

ACCESSDOOR

ACCESS DOOR





AT 215-29 6900 11740 U 2280 (2) 5 62,600 10' 3-3/8" 5' 7-1/8" 7' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-39 6980 11820 U 2320 (2) 7.5 71,400 10' 3-3/8" 5' 7-1/8" 7' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-49 7040 11880 U 2350 (2) 10 78,300 10' 3-3/8" 5' 7-1/8" 7' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-59 7440 12280 U 2550 (2) 7.5 70,200 11' 3-3/8" 6' 7-1/8" 8' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-69 7500 12340 U 2580 (2) 10 76,900 11' 3-3/8" 6' 7-1/8" 8' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-79 8040 12880 U 2850 (2) 10 75,700 12' 3-3/8" 7' 7-1/8" 9' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-89 7620 12460 U 2640 (2) 15 87,500 11' 3-3/8" 6' 7-1/8" 8' 10-1/2" 1' 7/8" 2' 5-7/8"AT 215-99 8160 13000 U 2910 (2) 15 86,000 12' 3-3/8" 7' 7-1/8" 9' 10-1/2" 1' 7/8" 2' 5-7/8"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 19-59 10 774 613 718 566 640 507 559 448 726 578AT 19-69 15 819 640 758 588 671 524 581 460 767 601AT 19-79 15 889 713 828 661 742 596 653 531 837 674AT 19-89 15 918 741 856 691 770 630 684 570 864 704AT 19-99 20 1005 812 937 758 844 691 750 626 946 772AT 19-111 7.5 756 578 694 526 607 462 519 399 702 539AT 19-211 10 810 622 744 569 654 502 561 436 754 583AT 19-311 10 862 680 798 626 710 559 619 493 808 640AT 19-411 15 915 711 844 652 745 580 644 508 854 668AT 19-511 15 985 785 916 727 819 655 719 582 926 742AT 19-611 15 1025 828 955 771 860 703 764 634 965 786AT 19-711 20 1090 876 1015 813 912 735 804 657 1026 830AT 19-811 20 1132 914 1055 853 950 778 845 704 1066 869AT 19-911 25 1191 962 1110 898 1000 819 889 742 1122 914


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 19-59 10 686 548 598 724 480 581 490 627 399 507AT 19-69 15 723 569 623 765 495 605 505 656 407 523AT 19-79 15 793 641 696 835 567 677 577 728 476 595AT 19-89 15 821 672 725 862 603 707 612 756 518 629AT 19-99 20 899 737 794 944 661 775 671 828 571 690AT 19-111 7.5 659 507 561 700 434 542 443 593 346 461AT 19-211 10 707 548 605 752 472 586 482 638 379 502AT 19-311 10 763 606 663 806 529 643 539 695 438 558AT 19-411 15 804 629 692 852 547 671 558 728 447 579AT 19-511 15 876 705 767 923 621 746 632 803 519 654AT 19-611 15 916 750 810 963 672 789 682 844 576 702AT 19-711 20 973 789 856 1024 700 834 711 894 591 734AT 19-811 20 1012 830 895 1064 744 873 755 933 642 777AT 19-911 25 1065 874 942 1119 784 918 796 982 677 818




43

8' 5-1/2"

H

51 7/8

T

L

9

5 3/8

P

8 BFW/GROOVEDOUTLET

8 BFW/GROOVEDINLET

3 FPT OVERFLOW

3 FPT DRAIN

2 MPT MAKE-UP

S

3/8

2

23 1/8

14 7/8

7 1/2

3 7/8

Q

21 3/8

ACCESS DOOR

30 5/8


ACCESS DOOR

F



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P L AT/USS UT S&Q

AT 19-59 4320 7160 U 3010 10 43,900 11' 3-1/2" 6' 11-5/8" 8' 7-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 19-69 4120 6960 U 2810 15 50,800 10' 3-1/2" 5' 11-5/8" 7' 7-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 19-79 4390 7230 U 3080 15 49,800 11' 3-1/2" 6' 11-5/8" 8' 7-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 19-89 4700 7540 U 3390 15 49,000 12' 3-1/2" 7' 11-5/8" 9' 7-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 19-99 4750 7590 U 3440 20 53,600 12' 3-1/2" 7' 11-5/8" 9' 7-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 19-111 4570 7870 U 3100 7.5 45,800 10' 3-1/2" 5' 11-5/8" 7' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-211 4600 7900 U 3130 10 50,200 10' 3-1/2" 5' 11-5/8" 7' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-311 4920 8220 U 3450 10 49,400 11' 3-1/2" 6' 11-5/8" 8' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-411 4670 7970 U 3200 15 57,100 10' 3-1/2" 5' 11-5/8" 7' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-511 4990 8290 U 3520 15 56,100 11' 3-1/2" 6' 11-5/8" 8' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-611 5340 8640 U 3870 15 55,100 12' 3-1/2" 7' 11-5/8" 9' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-711 5040 8340 U 3570 20 61,300 11' 3-1/2" 6' 11-5/8" 8' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-811 5390 8690 U 3920 20 60,300 12' 3-1/2" 7' 11-5/8" 9' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 19-911 5420 8720 U 3950 25 64,600 12' 3-1/2" 7' 11-5/8" 9' 7-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8" 5' 2-3/4"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 19-412 20 1114 871 1030 800 912 713 790 627 1043 818AT 19-512 15 1114 887 1036 821 926 739 812 656 1047 838AT 19-612 20 1219 978 1135 907 1018 819 897 731 1148 926AT 19-712 20 1251 1010 1166 943 1050 859 933 777 1178 960AT 19-812 25 1297 1045 1209 971 1087 879 961 787 1222 990AT 19-912 30 1375 1111 1282 1037 1155 946 1027 857 1295 1056AT 19-114 10 1016 777 932 707 816 621 697 537 944 725AT 19-214 10 1098 861 1016 793 902 705 783 620 1028 810AT 19-314 20 1226 952 1131 873 998 777 862 681 1145 894AT 19-414 15 1222 968 1134 895 1012 802 884 708 1147 914AT 19-514 15 1251 1009 1166 940 1049 853 930 768 1178 957AT 19-614 20 1337 1067 1243 988 1113 891 977 792 1257 1009AT 19-714 25 1440 1156 1342 1073 1204 969 1061 866 1356 1095AT 19-814 30 1520 1224 1417 1138 1274 1030 1126 923 1432 1160AT 19-914 30 1566 1266 1460 1181 1315 1077 1169 975 1476 1203


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 19-412 20 982 774 849 1040 675 823 687 892 555 712AT 19-512 15 991 796 867 1044 701 842 713 907 585 737AT 19-612 20 1088 880 956 1145 780 930 793 999 657 818AT 19-712 20 1119 917 989 1176 822 964 834 1031 707 858AT 19-812 25 1160 943 1021 1219 837 995 851 1067 709 878AT 19-912 30 1230 1009 1088 1292 905 1061 919 1134 783 945AT 19-114 10 885 682 754 941 583 729 596 797 466 620AT 19-214 10 969 766 839 1025 667 814 680 883 550 704AT 19-314 20 1077 843 927 1142 732 899 747 976 599 775AT 19-414 15 1084 866 945 1144 760 918 774 991 630 801AT 19-514 15 1118 914 986 1175 815 961 828 1029 697 852AT 19-614 20 1190 958 1042 1254 845 1014 860 1091 707 889AT 19-714 25 1286 1041 1130 1353 923 1100 938 1181 778 968AT 19-814 30 1359 1105 1197 1428 981 1166 998 1250 831 1029AT 19-914 30 1401 1149 1239 1472 1031 1208 1046 1291 890 1076




45

8' 5-1/2"

H

56 1/4

T

L

9

5 3/8

P

8 BFW/GROOVEDOUTLET

8 BFW/GROOVEDINLET

3 FPT OVERFLOW

3 FPT DRAIN

2 MPT MAKE-UP

S

3/8

2

23 1/8

14 7/8

7 1/2

3 7/8

Q

ACCESS DOOR

21 3/8 F

30 5/8


ACCESS DOOR




AT 19-412 5230 9090 U 3580 20 69,100 10' 7-7/8" 5' 11-5/8" 7' 11-1/2" 11' 11-3/4" 1' 7/8" 2' 9-7/8" 5' 11-7/8"AT 19-512 5550 9410 U 3900 15 61,900 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 11' 11-3/4" 1' 7/8" 2' 9-7/8" 5' 11-7/8"AT 19-612 5590 9450 U 3940 20 67,800 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 11' 11-3/4" 1' 7/8" 2' 9-7/8" 5' 11-7/8"AT 19-712 5980 9840 U 4330 20 66,700 12' 7-7/8" 7' 11-5/8" 9' 11-1/2" 11' 11-3/4" 1' 7/8" 2' 9-7/8" 5' 11-7/8"AT 19-812 5610 9470 U 3960 25 72,800 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 11' 11-3/4" 1' 7/8" 2' 9-7/8" 5' 11-7/8"AT 19-912 6020 9880 U 4370 30 75,800 12' 7-7/8" 7' 11-5/8" 9' 11-1/2" 11' 11-3/4" 1' 7/8" 2' 9-7/8" 5' 11-7/8"AT 19-114 5570 10080 U 3710 10 61,300 10' 7-7/8" 5' 11-5/8" 7' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-214 5980 10490 U 4120 10 60,300 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-314 5690 10200 U 3830 20 76,500 10' 7-7/8" 5' 11-5/8" 7' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-414 6060 10570 U 4200 15 68,600 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-514 6510 11020 U 4650 15 67,500 12' 7-7/8" 7' 11-5/8" 9' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-614 6100 10610 U 4240 20 75,000 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-714 6120 10630 U 4260 25 80,400 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-814 6140 10650 U 4280 30 85,200 11' 7-7/8" 6' 11-5/8" 8' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"AT 19-914 6590 11100 U 4730 30 83,800 12' 7-7/8" 7' 11-5/8" 9' 11-1/2" 13' 11-3/4" 1' 7/8" 2' 9-7/8" 6' 11-7/8"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 217-59 (2) 10 1547 1226 1437 1133 1281 1015 1119 896 1452 1157AT 217-69 (2) 15 1639 1281 1515 1176 1341 1047 1162 920 1534 1203AT 217-79 (2) 15 1779 1426 1656 1321 1485 1192 1307 1063 1674 1348AT 217-89 (2) 15 1836 1482 1711 1383 1541 1260 1369 1140 1729 1409AT 217-99 (2) 20 2009 1624 1873 1515 1688 1382 1500 1252 1893 1543AT 217-111 (2) 7.5 1530 1170 1403 1065 1229 937 1051 811 1421 1092AT 217-211 (2) 7.5 1609 1261 1489 1160 1321 1031 1145 906 1507 1186AT 217-311 (2) 10 1740 1374 1613 1266 1435 1132 1251 999 1632 1294AT 217-411 (2) 15 1849 1437 1707 1320 1508 1174 1303 1029 1727 1350AT 217-511 (2) 10 1828 1472 1703 1372 1531 1245 1358 1120 1721 1398AT 217-611 (2) 15 1988 1587 1849 1470 1655 1324 1453 1178 1869 1500AT 217-711 (2) 15 2069 1671 1929 1558 1737 1419 1542 1281 1949 1587AT 217-811 (2) 20 2200 1769 2050 1643 1842 1486 1625 1330 2071 1676AT 217-911 (2) 25 2403 1942 2241 1813 2019 1654 1794 1498 2264 1846


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 217-59 (2) 10 1373 1096 1196 1449 961 1162 979 1254 797 1013AT 217-69 (2) 15 1445 1137 1247 1530 991 1209 1010 1312 813 1046AT 217-79 (2) 15 1587 1282 1392 1670 1135 1355 1154 1456 953 1190AT 217-89 (2) 15 1641 1345 1451 1725 1205 1415 1223 1513 1036 1258AT 217-99 (2) 20 1797 1474 1589 1889 1323 1550 1342 1657 1143 1380AT 217-111 (2) 7.5 1333 1027 1136 1417 880 1098 899 1201 703 935AT 217-211 (2) 7.5 1420 1120 1228 1503 974 1192 994 1292 803 1029AT 217-311 (2) 10 1541 1225 1341 1628 1071 1301 1091 1406 887 1130AT 217-411 (2) 15 1625 1274 1400 1722 1107 1357 1129 1474 906 1172AT 217-511 (2) 10 1633 1334 1440 1717 1188 1404 1207 1503 1015 1243AT 217-611 (2) 15 1770 1424 1549 1865 1256 1507 1279 1622 1051 1322AT 217-711 (2) 15 1850 1515 1634 1944 1357 1594 1378 1705 1165 1417AT 217-811 (2) 20 1965 1594 1729 2067 1414 1684 1438 1806 1195 1483AT 217-911 (2) 25 2149 1764 1901 2259 1583 1854 1606 1982 1368 1652



47

17' 4-1/8" L

H

60 1/4

3/8 101 1/2 5 1/8

96 1/8

97 1/4

80 1/4 23 1/8

14 7/8

7 1/2

3 5/8

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN


P

50 3/4


T

21 3/8 21 3/8

92 1/2

ACCESS DOOR

2

F

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

30 5/8

30 5/8





AT 217-59 8640 14320 U 3010 (2) 10 87,800 12' 2-1/2" 7' 2-1/4" 9' 6-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8"AT 217-69 8240 13920 U 2810 (2) 15 101,500 11' 2-1/2" 6' 2-1/4" 8' 6-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8"AT 217-79 8780 14460 U 3080 (2) 15 99,500 12' 2-1/2" 7' 2-1/4" 9' 6-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8"AT 217-89 9400 15080 U 3390 (2) 15 97,900 13' 2-1/2" 8' 2-1/4" 10' 6-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8"AT 217-99 9500 15180 U 3440 (2) 20 107,100 13' 2-1/2" 8' 2-1/4" 10' 6-1/8" 8' 11-1/2" 1' 7/8" 2' 9-7/8"AT 217-111 9140 15740 U 3100 (2) 7.5 91,800 11' 2-1/2" 6' 2-1/4" 8' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-211 9780 16380 U 3420 (2) 7.5 90,500 12' 2-1/2" 7' 2-1/4" 9' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-311 9840 16440 U 3450 (2) 10 99,100 12' 2-1/2" 7' 2-1/4" 10' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-411 9340 15940 U 3200 (2) 15 114,600 11' 2-1/2" 6' 2-1/4" 8' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-511 10540 17140 U 3800 (2) 10 97,400 13' 2-1/2" 8' 2-1/4" 10' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-611 9980 16580 U 3520 (2) 15 112,500 12' 2-1/2" 7' 2-1/4" 9' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-711 10680 17280 U 3870 (2) 15 110,600 13' 2-1/2" 8' 2-1/4" 10' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-811 10080 16680 U 3570 (2) 20 123,000 12' 2-1/2" 7' 2-1/4" 9' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"AT 217-911 10840 17440 U 3950 (2) 25 129,700 13' 2-1/2" 8' 2-1/4" 10' 6-1/8" 10' 5-1/2" 1' 7/8" 2' 9-7/8"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°

AT 217-412 (2) 20 2174 1696 2009 1558 1777 1386 1539 1217 2033 1593AT 217-512 (2) 15 2178 1732 2023 1602 1807 1438 1583 1275 2046 1635AT 217-612 (2) 20 2384 1911 2220 1771 1990 1597 1751 1424 2244 1807AT 217-712 (2) 20 2448 1977 2282 1844 2055 1680 1825 1519 2306 1878AT 217-812 (2) 25 2538 2041 2366 1897 2126 1716 1876 1536 2390 1935AT 217-912 (2) 30 2691 2174 2508 2029 2260 1850 2008 1676 2535 2066AT 217-214 (2) 15 2412 1909 2239 1763 1995 1580 1742 1394 2264 1802AT 217-314 (2) 25 2612 2044 2417 1877 2140 1673 1854 1471 2446 1920AT 217-414 (2) 20 2640 2105 2455 1949 2196 1754 1926 1560 2482 1990AT 217-514 (2) 20 2712 2189 2528 2041 2276 1858 2020 1676 2554 2079AT 217-614 (2) 25 2845 2283 2650 2117 2377 1911 2094 1706 2679 2160AT 217-714 (2) 25 2934 2370 2735 2211 2463 2015 2188 1823 2763 2252AT 217-814 (2) 30 3003 2417 2799 2247 2515 2032 2222 1819 2828 2290AT 217-914 (2) 30 3094 2500 2884 2333 2598 2127 2309 1926 2915 2376



AT 217-412 (2) 20 1916 1505 1651 2028 1310 1601 1337 1738 1074 1384AT 217-512 (2) 15 1936 1553 1691 2041 1366 1643 1390 1771 1138 1436AT 217-612 (2) 20 2127 1718 1866 2238 1520 1815 1546 1952 1276 1595AT 217-712 (2) 20 2188 1793 1934 2300 1607 1886 1631 2017 1381 1677AT 217-812 (2) 25 2268 1841 1995 2385 1633 1944 1660 2085 1381 1713AT 217-912 (2) 30 2406 1974 2128 2529 1771 2075 1797 2218 1530 1848AT 217-214 (2) 15 2139 1706 1863 2258 1495 1811 1523 1953 1239 1578AT 217-314 (2) 25 2304 1815 1991 2439 1583 1930 1613 2093 1303 1670AT 217-414 (2) 20 2349 1889 2056 2476 1665 1999 1695 2152 1392 1752AT 217-514 (2) 20 2424 1984 2141 2548 1777 2088 1804 2234 1523 1856AT 217-614 (2) 25 2539 2054 2231 2672 1819 2170 1850 2331 1532 1908AT 217-714 (2) 25 2623 2150 2319 2757 1927 2261 1956 2418 1659 2012AT 217-814 (2) 30 2684 2180 2362 2821 1935 2301 1967 2468 1637 2029AT 217-914 (2) 30 2767 2270 2446 2908 2035 2386 2066 2551 1757 2124



49

17' 4-1/8" L

H

B

3/8101 1/25 1/8

96 1/8

97 1/4

80 1/423 1/8

14 7/8

7 1/2

3 3/4

(2) 2 MPT MAKE-UP

(2) 3 FPTOVERFLOW

(2) 3 FPT DRAIN

(2) 8 BFW/GVD OUTLET

P

50 3/4

(2) 8 BFW/GVDINLET

T

21 3/821 3/8

92 1/2

ACCESS DOOR

2

ACCESS DOOR

F

ACCESSDOOR

ACCESSDOOR

30 5/8

30 5/8




Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P L AT/USS UT

AT 217-412 10460 18180 U 3580 (2) 20 136,200 11' 2-1/2" 6' 2-1/4" 5' 1/4" 8' 6-1/8" 11' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-512 11100 18820 U 3900 (2) 15 122,000 12' 2-1/2" 7' 2-1/4" 5' 1/4" 9' 6-1/8" 11' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-612 11180 18900 U 3940 (2) 20 133,500 12' 2-1/2" 7' 2-1/4" 5' 1/4" 9' 6-1/8" 11' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-712 11960 19680 U 4330 (2) 20 131,400 13' 2-1/2" 8' 2-1/4" 5' 1/4" 10' 6-1/8" 11' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-812 11220 18940 U 3960 (2) 25 143,200 12' 2-1/2" 7' 2-1/4" 5' 1/4" 9' 6-1/8" 11' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-912 12040 19760 U 4370 (2) 30 149,300 13' 2-1/2" 8' 2-1/4" 5' 1/4" 10' 6-1/8" 11' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-214 12120 21140 U 4200 (2) 15 137,700 12' 8-1/2" 7' 2-1/4" 5' 6-1/4" 10' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-314 11420 20440 U 3850 (2) 25 164,700 11' 8-1/2" 6' 2-1/4" 5' 6-1/4" 9' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-414 12200 21220 U 4240 (2) 20 150,600 12' 8-1/2" 7' 2-1/4" 5' 6-1/4" 10' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-514 13100 22120 U 4690 (2) 20 148,300 13' 8-1/2" 8' 2-1/4" 5' 6-1/4" 11' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-614 12240 21260 U 4260 (2) 25 161,500 12' 8-1/2" 7' 2-1/4" 5' 6-1/4" 10' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-714 13140 22160 U 4710 (2) 25 158,900 13' 8-1/2" 8' 2-1/4" 5' 6-1/4" 11' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-814 12280 21300 U 4280 (2) 30 171,100 12' 8-1/2" 7' 2-1/4" 5' 6-1/4" 10' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"AT 217-914 13180 22200 U 4730 (2) 30 168,200 13' 8-1/2" 8' 2-1/4" 5' 6-1/4" 11' 1/8" 13' 11-3/4" 1' 7/8" 2' 9-7/8"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 29-318 (2) 7.5 1329 1017 1219 926 1068 814 913 706 1235 949AT 29-418 (2) 10 1448 1115 1332 1021 1171 902 1008 785 1348 1045AT 29-518 (2) 10 1570 1244 1458 1149 1300 1030 1135 909 1474 1174AT 29-618 (2) 15 1663 1300 1538 1194 1361 1063 1179 934 1556 1221AT 29-718 (2) 15 1805 1447 1681 1341 1507 1210 1326 1079 1699 1368AT 29-818 (2) 15 1863 1504 1736 1403 1564 1279 1389 1157 1755 1429AT 29-918 (2) 20 2039 1648 1901 1538 1713 1402 1522 1270 1921 1566AT 29-121 (2) 7.5 1532 1171 1405 1065 1230 936 1051 809 1423 1092AT 29-221 (2) 7.5 1613 1263 1492 1161 1323 1032 1146 906 1510 1188AT 29-321 (2) 10 1745 1377 1617 1268 1438 1133 1253 999 1636 1296AT 29-421 (2) 15 1853 1439 1710 1321 1509 1175 1303 1029 1730 1352AT 29-521 (2) 10 1834 1477 1709 1376 1536 1248 1362 1122 1727 1402AT 29-621 (2) 15 1994 1590 1855 1472 1659 1326 1456 1179 1875 1503AT 29-721 (2) 15 2076 1676 1935 1562 1742 1423 1546 1285 1955 1592AT 29-821 (2) 20 2207 1773 2057 1647 1847 1488 1629 1331 2078 1681AT 29-921 (2) 25 2411 1949 2248 1819 2025 1659 1800 1502 2272 1852


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 29-318 (2) 7.5 1158 892 988 1231 765 955 781 1043 611 813AT 29-418 (2) 10 1266 984 1085 1344 850 1050 868 1144 687 901AT 29-518 (2) 10 1393 1112 1213 1470 975 1180 994 1273 809 1028AT 29-618 (2) 15 1467 1154 1265 1552 1006 1227 1025 1331 826 1061AT 29-718 (2) 15 1610 1301 1413 1695 1152 1375 1171 1478 967 1208AT 29-818 (2) 15 1665 1365 1472 1750 1223 1436 1241 1535 1052 1277AT 29-918 (2) 20 1824 1496 1613 1917 1342 1573 1362 1681 1160 1401AT 29-121 (2) 7.5 1334 1027 1136 1419 879 1098 898 1202 701 934AT 29-221 (2) 7.5 1423 1120 1230 1506 974 1194 994 1294 802 1030AT 29-321 (2) 10 1545 1227 1343 1632 1071 1303 1092 1408 887 1131AT 29-421 (2) 15 1628 1275 1401 1726 1107 1359 1129 1475 905 1173AT 29-521 (2) 10 1638 1337 1445 1723 1191 1408 1210 1508 1018 1246AT 29-621 (2) 15 1775 1427 1553 1870 1258 1511 1281 1626 1052 1324AT 29-721 (2) 15 1856 1520 1640 1951 1361 1599 1382 1710 1167 1421AT 29-821 (2) 20 1971 1598 1733 2073 1417 1688 1441 1812 1197 1486AT 29-921 (2) 25 2157 1769 1907 2266 1588 1860 1611 1988 1372 1657




51

8' 5-1/2"

5' 1/4"

H

Q

P

L

23 1/8

14 7/8

3 7/8 3/8

2

T

5 3/8

9

S



2 MPTMAKE-UP

3 FPTOVERFLOW

3 FPT DRAIN

21 3/8

Q

S 7 1/2

ACCESS DOOR

F

ACCESS DOOR

30 5/8


30 5/8

ACCESS DOOR

ACCESS DOOR




AT 29-318 7920 13810 U 5370 (2) 7.5 81,900 10' 11-7/8" 5' 11-5/8" 8' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-418 7980 13870 U 5430 (2) 10 89,800 10' 11-7/8" 5' 11-5/8" 8' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-518 8510 14400 U 5960 (2) 10 88,200 11' 11-7/8" 6' 11-5/8" 9' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-618 8120 14010 U 5570 (2) 15 102,000 10' 11-7/8" 5' 11-5/8" 8' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-718 8650 14540 U 6100 (2) 15 100,100 11' 11-7/8" 6' 11-5/8" 9' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-818 9230 15120 U 6680 (2) 15 98,400 12' 11-7/8" 7' 11-5/8" 10' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-918 9330 15220 U 6780 (2) 20 107,600 12' 11-7/8" 7' 11-5/8" 10' 3-1/2" 18' 0" 1' 7/8" 2' 9-7/8" 4' 5-3/4"AT 29-121 9000 15940 U 6210 (2) 7.5 91,800 10' 11-7/8" 5' 11-5/8" 8' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-221 9610 16550 U 6820 (2) 7.5 90,500 11' 11-7/8" 6' 11-5/8" 9' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-321 9670 16610 U 6880 (2) 10 99,200 11' 11-7/8" 6' 11-5/8" 9' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-421 9200 16140 U 6410 (2) 15 114,600 10' 11-7/8" 5' 11-5/8" 8' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-521 10330 17270 U 7540 (2) 10 97,500 12' 11-7/8" 7' 11-5/8" 10' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-621 9810 16750 U 7020 (2) 15 112,500 11' 11-7/8" 6' 11-5/8" 9' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-721 10470 17410 U 7680 (2) 15 110,700 12' 11-7/8" 7' 11-5/8" 10' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-821 9910 16850 U 7120 (2) 20 123,000 11' 11-7/8" 6' 11-5/8" 9' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"AT 29-921 10630 17570 U 7840 (2) 25 129,800 12' 11-7/8" 7' 11-5/8" 10' 3-1/2" 21' 0" 1' 7/8" 2' 9-7/8" 5' 2-3/4"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 29-024 (2) 10 1973 1556 1828 1433 1626 1280 1416 1129 1849 1465AT 29-124 (2) 10 2022 1627 1883 1515 1693 1373 1499 1234 1903 1545AT 29-224 (2) 20 2204 1722 2038 1581 1803 1408 1562 1237 2062 1617AT 29-324 (2) 15 2205 1756 2050 1624 1832 1460 1605 1296 2072 1658AT 29-424 (2) 15 2253 1817 2099 1694 1890 1542 1676 1389 2121 1726AT 29-524 (2) 20 2414 1936 2248 1795 2016 1620 1775 1445 2272 1831AT 29-624 (2) 20 2478 2001 2310 1867 2080 1701 1848 1539 2334 1902AT 29-724 (2) 25 2569 2068 2395 1923 2153 1739 1902 1557 2420 1960AT 29-824 (2) 25 2642 2135 2463 1992 2219 1816 1972 1644 2489 2029AT 29-924 (2) 30 2724 2201 2539 2054 2287 1874 2033 1697 2566 2092AT 29-228 (2) 15 2457 1947 2281 1800 2034 1613 1779 1425 2306 1838AT 29-328 (2) 25 2662 2086 2465 1918 2185 1711 1894 1507 2493 1962AT 29-428 (2) 20 2687 2146 2499 1988 2239 1791 1965 1593 2526 2029AT 29-528 (2) 20 2760 2228 2572 2077 2316 1892 2056 1708 2599 2116AT 29-628 (2) 25 2895 2325 2698 2158 2421 1949 2134 1742 2726 2202AT 29-728 (2) 25 2985 2411 2783 2250 2506 2050 2227 1856 2812 2291AT 29-828 (2) 30 3055 2461 2848 2288 2561 2071 2264 1856 2877 2333AT 29-928 (2) 30 3148 2544 2935 2374 2644 2165 2350 1960 2965 2417


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 29-024 (2) 10 1746 1387 1518 1845 1211 1473 1234 1592 1002 1278AT 29-124 (2) 10 1805 1471 1592 1899 1310 1551 1331 1661 1118 1371AT 29-224 (2) 20 1943 1529 1677 2057 1332 1626 1358 1764 1094 1406AT 29-324 (2) 15 1962 1574 1714 2067 1386 1666 1410 1795 1156 1458AT 29-424 (2) 15 2013 1647 1778 2116 1472 1733 1496 1855 1261 1540AT 29-524 (2) 20 2153 1742 1891 2267 1542 1840 1568 1977 1296 1617AT 29-624 (2) 20 2215 1815 1958 2329 1627 1910 1652 2042 1400 1699AT 29-724 (2) 25 2297 1866 2021 2414 1656 1969 1684 2112 1401 1737AT 29-824 (2) 25 2363 1938 2089 2483 1738 2037 1764 2178 1500 1814AT 29-924 (2) 30 2436 1998 2154 2560 1793 2101 1820 2246 1550 1871AT 29-228 (2) 15 2180 1742 1900 2300 1529 1847 1558 1992 1269 1611AT 29-328 (2) 25 2350 1854 2033 2487 1619 1972 1649 2137 1337 1708AT 29-428 (2) 20 2393 1927 2095 2520 1700 2039 1731 2194 1423 1789AT 29-528 (2) 20 2467 2020 2179 2593 1809 2125 1837 2273 1552 1889AT 29-628 (2) 25 2585 2094 2272 2720 1856 2212 1887 2375 1567 1947AT 29-728 (2) 25 2669 2188 2360 2805 1962 2301 1991 2460 1690 2048AT 29-828 (2) 30 2731 2222 2406 2871 1974 2343 2007 2513 1671 2068AT 29-928 (2) 30 2815 2309 2489 2959 2072 2428 2103 2595 1790 2162



53

P

L

N

S

8' 5-1/2" 3/8

H

B

T

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN



23 1/8

14 7/8

7 1/2

3 7/8

2 Q

M 2 1/2

21 3/8

ACCESS DOOR

F

ACCESS DOOR

30 5/8


30 5/8

ACCESS DOOR

ACCESS DOOR

5 3/8



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P L AT/USS UT M N S&Q

AT 29-024 10920 18640 U 3820 (2) 10 107,900 11' 11-7/8" 6' 11-5/8" 5' 1/4" 9' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-124 11700 19420 U 4210 (2) 10 106,200 12' 11-7/8" 7' 11-5/8" 5' 1/4" 10' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-224 10440 18160 U 3580 (2) 20 137,000 10' 11-7/8" 5' 11-5/8" 5' 1/4" 8' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-324 11080 18800 U 3900 (2) 15 122,600 11' 11-7/8" 6' 11-5/8" 5' 1/4" 9' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-424 11860 19580 U 4290 (2) 15 120,700 12' 11-7/8" 7' 11-5/8" 5' 1/4" 10' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-524 11160 18880 U 3940 (2) 20 134,100 11' 11-7/8" 6' 11-5/8" 5' 1/4" 9' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-624 11940 19660 U 4330 (2) 20 132,100 12' 11-7/8" 7' 11-5/8" 5' 1/4" 10' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-724 11200 18920 U 3960 (2) 25 144,000 11' 11-7/8" 6' 11-5/8" 5' 1/4" 9' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-824 11980 19700 U 4350 (2) 25 141,600 12' 11-7/8" 7' 11-5/8" 5' 1/4" 10' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-924 12020 19740 U 4370 (2) 30 150,100 12' 11-7/8" 7' 11-5/8" 5' 1/4" 10' 3-1/2" 24' 2" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 29-228 12180 21200 U 4200 (2) 15 137,800 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-328 11480 20500 U 3850 (2) 25 164,700 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-428 12260 21280 U 4240 (2) 20 150,600 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-528 13160 22180 U 4690 (2) 20 148,300 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-628 12300 21320 U 4260 (2) 25 161,600 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-728 13200 22220 U 4710 (2) 25 159,000 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-828 12340 21360 U 4280 (2) 30 171,200 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 29-928 13240 22260 U 4730 (2) 30 168,200 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 28' 2" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"

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Motor LWT 80° 80° 80° 80° 80° 80° 80° 80° 85° 85°Model No. Hp WB 66° 66° 68° 68° 70° 70° 72° 72° 75° 75°AT 39-336 (3) 10 2755 2115 2531 1931 2222 1706 1905 1480 2564 1980AT 39-436 (3)15 3044 2358 2806 2160 2473 1916 2132 1677 2842 2211AT 39-536 (3) 20 3323 2599 3074 2386 2721 2126 2357 1869 3110 2441AT 39-636 (3) 15 3325 2648 3091 2450 2763 2203 2422 1956 3125 2501AT 39-736 (3) 20 3638 2919 3389 2707 3040 2443 2677 2181 3425 2762AT 39-836 (3) 25 3873 3118 3610 2899 3245 2623 2868 2349 3648 2955AT 39-936 (3) 30 4105 3318 3827 3096 3448 2824 3065 2558 3867 3153AT 39-242 (3) 10 3049 2330 2796 2121 2449 1863 2092 1611 2832 2174AT 39-342 (3) 15 3365 2591 3093 2372 2721 2096 2341 1824 3132 2427AT 39-442 (3) 10 3373 2712 3140 2519 2821 2281 2491 2048 3174 2569AT 39-542 (3) 25 3971 3112 3677 2860 3258 2550 2825 2245 3720 2925AT 39-642 (3) 25 4321 3469 4027 3220 3613 2908 3184 2598 4069 3285AT 39-742 (3) 25 4456 3599 4154 3358 3741 3061 3324 2770 4197 3420AT 39-842 (3) 30 4560 3673 4251 3415 3822 3090 3379 2768 4295 3481AT 39-942 (3) 30 4699 3797 4381 3543 3946 3231 3507 2926 4427 3609


Motor LWT 85° 85° 85° 87° 85° 87° 85° 87° 85° 87°Model No. Hp WB 76° 76° 78° 78° 78° 78° 80° 80° 80° 80°AT 39-336 (3) 10 2404 1861 2057 2557 1600 1992 1635 2170 1286 1702AT 39-436 (3) 15 2670 2086 2296 2834 1807 2224 1843 2417 1474 1913AT 39-536 (3) 20 2931 2308 2530 3102 2012 2453 2050 2661 1653 2122AT 39-636 (3) 15 2957 2375 2586 3117 2091 2513 2128 2707 1745 2199AT 39-736 (3) 20 3247 2627 2852 3417 2326 2775 2365 2981 1957 2440AT 39-836 (3) 25 3462 2814 3048 3639 2498 2969 2540 3184 2114 2619AT 39-936 (3) 30 3672 3012 3247 3858 2703 3167 2743 3385 2336 2821AT 39-242 (3) 10 2655 2045 2262 2824 1750 2186 1788 2392 1397 1860AT 39-342 (3) 15 2940 2286 2520 3123 1974 2441 2017 2659 1595 2092AT 39-442 (3) 10 3010 2445 2651 3166 2174 2580 2209 2769 1852 2277AT 39-542 (3) 25 3506 2765 3033 3710 2413 2941 2458 3187 1991 2546AT 39-642 (3) 25 3858 3124 3391 4059 2768 3301 2815 3544 2335 2904AT 39-742 (3) 25 3984 3266 3522 4188 2928 3435 2972 3673 2522 3057AT 39-842 (3) 30 4077 3316 3590 4285 2944 3497 2994 3750 2493 3086AT 39-942 (3) 30 4203 3447 3716 4416 3092 3624 3139 3874 2671 3227



55

H

B

T

8' 5-1/2" 3/8

P

23 1/8

14 7/8

7 1/2

3 7/8

L

M 2 1/2

Q

(3) 2 MPT MAKE-UP

(3) 3 FPT DRAIN



N

S

(3) 3 FPT OVERFLOW

2

21 3/8

ACCESS DOOR

F

30 5/8


ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

30 5/8 30 5/8


9 5 3/8

5 3/8

MODELS: AT/UT/USS 39-336 to 39-942Three-Cell Cooling Towers

��


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P L AT/USS UT M N S&Q

AT 39-336 15390 26970 U 3460 (3) 10 165,200 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-436 15630 27210 U 3540 (3) 15 188,200 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-536 15750 27330 U 3580 (3) 20 206,200 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-636 16710 28290 U 3900 (3) 15 184,900 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-736 16830 28410 U 3940 (3) 20 202,200 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-836 16890 28470 U 3960 (3) 25 217,100 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-936 18120 29700 U 4370 (3) 30 226,200 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 36' 4-1/4" 1' 7/8" 2' 9-7/8" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 39-242 16770 30300 U 3710 (3) 10 183,700 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-342 17010 30540 U 3790 (3) 15 209,300 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-442 19350 32880 U 4570 (3) 10 177,900 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-542 17190 30720 U 3850 (3) 25 246,200 11' 5-7/8" 5' 11-5/8" 5' 6-1/4" 8' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-642 18420 31950 U 4260 (3) 25 241,300 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-742 19770 33300 U 4710 (3) 25 237,400 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-842 18480 32010 U 4280 (3) 30 255,700 12' 5-7/8" 6' 11-5/8" 5' 6-1/4" 9' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"AT 39-942 19830 33360 U 4730 (3) 30 251,200 13' 5-7/8" 7' 11-5/8" 5' 6-1/4" 10' 9-1/2" 42' 4-1/4" 1' 7/8" 2' 9-7/8" 13' 11-3/4" 13' 2-3/4" 6' 11-7/8"

F†





†




AT 110-112 (1) 15 1200 950 1114 877 993 786 867 693 1127 897AT 110-212 (1) 25 1284 1004 1188 922 1051 821 910 721 1202 943AT 110-312 (1) 20 1302 1038 1211 960 1083 864 949 767 1224 980AT 110-412 (1) 30 1342 1053 1243 969 1103 864 957 762 1257 991AT 110-512 (1) 25 1384 1108 1288 1027 1155 926 1016 826 1302 1048AT 110-612 (1) 25 1417 1144 1321 1067 1189 972 1056 879 1334 1087AT 110-712 (1) 30 1452 1167 1353 1083 1215 979 1071 875 1368 1105AT 110-812 (1) 30 1490 1204 1389 1123 1251 1024 1112 927 1404 1144AT 110-912 (1) 40 1556 1257 1450 1173 1306 1070 1161 968 1465 1195AT 110-118 (1) 20 1569 1202 1440 1095 1262 964 1080 837 1459 1122AT 110-218 (1) 15 1608 1289 1496 1197 1344 1082 1184 970 1512 1220AT 110-318 (1) 20 1708 1345 1581 1237 1405 1103 1223 972 1599 1265AT 110-418 (1) 30 1772 1371 1632 1256 1438 1113 1239 973 1653 1285AT 110-518 (1) 25 1828 1447 1697 1337 1512 1198 1321 1058 1715 1366AT 110-618 (1) 30 1926 1533 1790 1417 1599 1273 1401 1129 1810 1447AT 110-718 (1) 30 1984 1600 1849 1492 1664 1358 1476 1223 1868 1520AT 110-818 (1) 40 2096 1679 1951 1556 1749 1403 1539 1251 1972 1588AT 110-918 (1) 40 2163 1747 2016 1629 1816 1484 1613 1343 2037 1660






57

9' 9-3/4"

5' 2-1/4"

H

T

F

Q

L

9

5 1/4

P

* BFW/GROOVED OUTLET

* BFW/GROOVED INLET

3 FPT OVERFLOW

3 FPT DRAIN

2 MPT MAKE-UP

S

3/8

2

25 1/4

16 7/8

O

3 5/8

ACCESS DOOR

7

ACCESS DOOR

Access Doors Swing Inside Unit



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P O L AT/USS UT† S&Q

AT 110-112 6840 12380 U 4750 15 72,300 13' 2" 7' 11-3/4" 9' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 110-212 6460 12000 U 4370 25 86,500 12' 2" 6' 11-3/4" 8' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 110-312 6890 12430 U 4800 20 79,000 13' 2" 7' 11-3/4" 9' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 110-412 6560 12100 U 4470 30 91,700 12' 2" 6' 11-3/4" 8' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 110-512 6940 12480 U 4850 25 85,000 13' 2" 7' 11-3/4" 9' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 110-612 7360 12900 U 5270 25 83,700 14' 2" 8' 11-3/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4" 5' 11-7/8"AT 110-712 7040 12580 U 4950 30 89,800 13' 2" 7' 11-3/4" 9' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 110-812 7460 13000 U 5370 30 88,600 14' 2" 8' 11-3/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4" 5' 11-7/8"AT 110-912 7710 13250 U 5620 40 92,800 14' 2" 8' 11-3/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4" 5' 11-7/8"AT 110-118 8910 17320 U 5760 20 107,200 12' 2" 6' 11-3/4" 8' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4" 9' 0"AT 110-218 10180 18590 U 7030 15 94,700 14' 2" 8' 11-3/4" 10' 0" 8-1/2" 18' 0" 1' 3-1/4"† 3' 3/4" 9' 0"AT 110-318 9600 18010 U 6450 20 105,500 13' 2" 7' 11-3/4" 9' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4" 9' 0"AT 110-418 9060 17470 U 5910 30 122,000 12' 2" 6' 11-3/4" 8' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4" 9' 0"AT 110-518 9650 18060 U 6500 25 113,100 13' 2" 7' 11-3/4" 9' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4" 9' 0"AT 110-618 9750 18160 U 6600 30 119,700 13' 2" 7' 11-3/4" 9' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4" 9' 0"AT 110-718 10380 18790 U 7230 30 117,800 14' 2" 8' 11-3/4" 10' 0" 8-1/2" 18' 0" 1' 3-1/4"† 3' 3/4" 9' 0"AT 110-818 10000 18410 U 6850 40 131,200 13' 2" 7' 11-3/4" 9' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4" 9' 0"AT 110-918 10630 19040 U 7480 40 129,000 14' 2" 8' 11-3/4" 10' 0" 8-1/2" 18' 0" 1' 3-1/4"† 3' 3/4" 9' 0"

��

*110-112 to 110-912(1) 8" Inlet

(1) 8" Outlet

*110-118 to 110-918(1) 10" Inlet

(1) 10" Outlet

F


�� Outlet connection extends 3/8” beyond bottom flange.� L = Lower Section, U = Upper Section† Fan guard does not ship factory mounted.



†










59

P

L

5 1/4 N

S

9' 9-3/4"

6' 2-1/4"

3/8

H

T

2

F

M 2 1/2

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN

* BFW/GROOVEDOUTLET

* BFW/GROOVEDINLET

25 1/4

16 7/8

O

3 5/8

Q


7


ACCESS DOOR

ACCESS DOOR



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P O L AT/USS UT† M N S&Q

AT 210-124 13860 24940 U 4750 (2) 15 144,500 14' 2" 7' 11-3/4" 10' 1" 7-1/4" 24' 2" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-224 13100 24180 U 4370 (2) 25 172,900 13' 2" 6' 11-3/4" 9' 1" 7-1/4" 24' 2" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-324 13960 25040 U 4800 (2) 20 158,300 14' 2" 7' 11-3/4" 10' 1" 7-1/4" 24' 2" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-424 13300 24380 U 4470 (2) 30 183,500 13' 2" 6' 11-3/4" 9' 1" 7-1/4" 24' 2" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-524 14060 25140 U 4850 (2) 25 169,700 14' 2" 7' 11-3/4" 10' 1" 7-1/4" 24' 2" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-624 14900 25980 U 5270 (2) 25 167,200 15' 2" 8' 11-3/4" 11' 1" 7-1/4" 24' 2" 1' 3-1/4"† 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-724 14260 25340 U 4950 (2) 30 179,900 14' 2" 7' 11-3/4" 10' 1" 7-1/4" 24' 2" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-824 15100 26180 U 5370 (2) 30 176,900 15' 2" 8' 11-3/4" 11' 1" 7-1/4" 24' 2" 1' 3-1/4"† 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-924 15600 26680 U 5620 (2) 40 185,600 15' 2" 8' 11-3/4" 11' 1" 7-1/4" 24' 2" 1' 3-1/4"† 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 210-136 18200 35010 U 5760 (2) 20 214,400 13' 2" 6' 11-3/4" 9' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-236 20740 37550 U 7030 (2) 15 189,400 15' 2" 8' 11-3/4" 11' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4"† 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-336 19580 36390 U 6450 (2) 20 211,000 14' 2" 7' 11-3/4" 10' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-436 18500 35310 U 5910 (2) 30 244,100 13' 2" 6' 11-3/4" 9' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-536 19680 36490 U 6500 (2) 25 226,300 14' 2" 7' 11-3/4" 10' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-636 19880 36690 U 6600 (2) 30 239,600 14' 2" 7' 11-3/4" 10' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-736 21140 37950 U 7230 (2) 30 235,800 15' 2" 8' 11-3/4" 11' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4"† 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-836 20380 37190 U 6850 (2) 40 262,300 14' 2" 7' 11-3/4" 10' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 210-936 21640 38450 U 7480 (2) 40 258,100 15' 2"" 8' 11-3/4" 11' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4"† 3' 3/4" 18' 0" 17' 3" 9' 0"

��

*210-124 to 210-924(2) 8" Inlet

(2) 8" Outlet

*210-136 to 210-936(2) 10" Inlet

(2) 10" Outlet

F





†










61

(3) 3 FPT OVERFLOW

H

T

F

9' 9-3/4"

7' 2-1/4"

P

25 1/4

16 7/8

O

3 5/8

L

M 2 1/2

Q

(3) 2 MPT MAKE-UP

(3) 3 FPT DRAIN

* BFW/GROOVEDOUTLET

* BFW/GROOVEDINLET2

5 1/4

S

ACCESS DOOR

N


ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

7


9

5 1/4

3/8



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P O L AT/USS UT† M N S&Q

AT 310-136 21030 37650 U 4750 (3) 15 217,200 15' 2" 7' 11-3/4" 11' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-236 19890 36510 U 4370 (3) 25 260,000 14' 2" 6' 11-3/4" 10' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-336 21180 37800 U 4800 (3) 20 237,700 15' 2" 7' 11-3/4" 11' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-436 20190 36810 U 4470 (3) 30 275,700 14' 2" 6' 11-3/4" 10' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-536 21330 37950 U 4850 (3) 25 255,100 15' 2" 7' 11-3/4" 11' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-636 22590 39210 U 5270 (3) 25 251,300 16' 2" 8' 11-3/4" 12' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-736 21630 38250 U 4950 (3) 30 270,400 15' 2" 7' 11-3/4" 11' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-836 22890 39510 U 5370 (3) 30 265,900 16' 2" 8' 11-3/4" 12' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-936 23640 40260 U 5620 (3) 40 279,100 16' 2" 8' 11-3/4" 12' 1" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 11-3/4" 11' 2-3/4" 5' 11-7/8"AT 310-154 27270 52490 U 5760 (3) 20 322,300 14' 2" 6' 11-3/4" 10' 0" 8-1/2" 54' 5" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-254 31080 56300 U 7030 (3) 15 284,600 16' 2" 8' 11-3/4" 12' 0" 8-1/2" 54' 5" 1' 3-1/4"† 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-354 29340 54560 U 6450 (3) 20 317,000 15' 2" 7' 11-3/4" 11' 0" 8-1/2" 54' 5" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-454 27720 52940 U 5910 (3) 30 366,800 14' 2" 6' 11-3/4" 10' 0" 8-1/2" 54' 5" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-554 29490 54710 U 6500 (3) 25 340,100 15' 2" 7' 11-3/4" 11' 0" 8-1/2" 54' 5" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-654 29790 55010 U 6600 (3) 30 360,000 15' 2" 7' 11-3/4" 11' 0" 8-1/2" 54' 5" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-754 31680 56900 U 7230 (3) 30 354,300 16' 2" 8' 11-3/4" 12' 0" 8-1/2" 54' 5" 1' 3-1/4"† 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-854 30540 55760 U 6850 (3) 40 394,100 15' 2" 7' 11-3/4" 11' 0" 8-1/2" 54' 5" 1' 3-1/4" 3' 3/4" 18' 0" 17' 3" 9' 0"AT 310-954 32430 57650 U 7480 (3) 40 387,800 16' 2" 8' 11-3/4" 12' 0" 8-1/2" 54' 5" 1' 3-1/4"† 3' 3/4" 18' 0" 17' 3" 9' 0"

��

*310-136 to 310-936(3) 8" Inlet

(3) 8" Outlet

*310-154 to 310-954(3) 10" Inlet

(3) 10" Outlet

F





†




AT 112-012 15 1339 1029 1231 942 1082 832 929 723 1246 965AT 112-112 20 1448 1122 1336 1029 1177 913 1015 799 1352 1053AT 112-212 25 1544 1205 1427 1106 1262 985 1093 865 1444 1131AT 112-312 20 1558 1240 1448 1147 1294 1031 1134 914 1464 1171AT 112-412 30 1625 1275 1505 1172 1335 1046 1158 922 1522 1199AT 112-512 20 1602 1293 1493 1205 1344 1097 1192 988 1509 1228AT 112-612 25 1667 1334 1551 1236 1390 1115 1223 993 1568 1261AT 112-712 30 1762 1416 1642 1314 1474 1188 1300 1062 1659 1341AT 112-812 30 1827 1476 1703 1377 1534 1255 1363 1136 1720 1402AT 112-912 40 1953 1579 1821 1473 1641 1344 1458 1217 1840 1500AT 112-314 30 1780 1386 1644 1273 1453 1133 1257 993 1663 1302AT 112-414 25 1818 1447 1690 1338 1510 1203 1323 1067 1708 1366AT 112-514 25 1876 1514 1748 1411 1574 1285 1396 1157 1767 1437AT 112-614 30 1926 1539 1792 1427 1605 1286 1410 1144 1811 1456AT 112-714 30 1992 1608 1856 1499 1671 1366 1484 1234 1876 1527AT 112-814 40 2094 1683 1951 1564 1753 1414 1547 1266 1972 1596AT 112-914 40 2176 1758 2029 1641 1828 1496 1624 1354 2050 1671



AT 112-012 15 1169 907 1001 1242 782 970 800 1056 631 831AT 112-112 20 1271 993 1093 1349 861 1059 878 1151 703 911AT 112-212 25 1361 1069 1173 1440 931 1137 950 1235 764 983AT 112-312 20 1385 1112 1211 1460 978 1177 996 1268 816 1029AT 112-412 30 1435 1133 1242 1518 989 1205 1008 1306 818 1044AT 112-512 20 1432 1172 1265 1505 1048 1233 1064 1319 897 1096AT 112-612 25 1486 1199 1302 1564 1060 1267 1079 1363 889 1113AT 112-712 30 1574 1275 1384 1655 1130 1347 1149 1446 955 1186AT 112-812 30 1633 1339 1444 1717 1201 1408 1219 1505 1035 1253AT 112-912 40 1747 1433 1545 1836 1286 1507 1305 1611 1112 1342AT 112-314 30 1567 1229 1350 1659 1069 1309 1091 1421 876 1131AT 112-414 25 1617 1297 1413 1704 1142 1373 1162 1480 952 1201AT 112-514 25 1677 1372 1481 1763 1227 1444 1246 1545 1051 1283AT 112-614 30 1716 1383 1503 1807 1221 1462 1243 1574 1023 1284AT 112-714 30 1780 1458 1573 1871 1307 1534 1326 1641 1122 1364AT 112-814 40 1871 1518 1645 1967 1346 1603 1369 1720 1138 1412AT 112-914 40 1946 1596 1721 2045 1432 1678 1453 1794 1235 1494



63

11' 10"

H

B

T

F

Q

L

9

5 1/4

P

* BFW/GROOVEDINLET

* BFW/GROOVEDOUTLET

3 FPTOVERFLOW

3 FPT DRAIN

2 MPTMAKE-UP

S3/8

2

25 1/416 7/8

O3 5/8

ACCESSDOOR

7

Access DoorsSwing Inside Unit

ACCESS DOOR



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P O L AT/USS UT† S&Q

AT 112-012 7440 13650 U 5000 15 81,400 12' 3" 7' 3/4" 5' 2-1/4" 8' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-112 7490 13700 U 5050 20 89,300 12' 3" 7' 3/4" 5' 2-1/4" 8' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-212 7540 13750 U 5100 25 95,800 12' 3" 7' 3/4" 5' 2-1/4" 8' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-312 8030 14240 U 5590 20 87,700 13' 3" 8' 3/4" 5' 2-1/4" 9' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-412 7640 13850 U 5200 30 101,500 12' 3" 7' 3/4" 5' 2-1/4" 8' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-512 8520 14730 U 6080 20 86,300 14' 3" 9' 3/4" 5' 2-1/4" 10' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4" 5' 11-7/8"AT 112-612 8080 14290 U 5640 25 94,000 13' 3" 8' 3/4" 5' 2-1/4" 9' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-712 8180 14390 U 5740 30 99,500 13' 3" 8' 3/4" 5' 2-1/4" 9' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4" 5' 11-7/8"AT 112-812 8670 14880 U 6230 30 97,900 14' 3" 9' 3/4" 5' 2-1/4" 10' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4" 5' 11-7/8"AT 112-912 8920 15130 U 6480 40 107,100 14' 3" 9' 3/4" 5' 2-1/4" 10' 2" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4" 5' 11-7/8"AT 112-314 8270 15600 U 5620 30 110,400 12' 9" 7' 3/4" 5' 8-1/4" 8' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4" 3' 3/4" 6' 11-7/8"AT 112-414 8860 16190 U 6210 25 102,300 13' 9" 8' 3/4" 5' 8-1/4" 9' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4" 3' 3/4" 6' 11-7/8"AT 112-514 9380 16710 U 6730 25 100,600 14' 9" 9' 3/4" 5' 8-1/4" 10' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4"† 3' 3/4" 6' 11-7/8"AT 112-614 8930 16260 U 6280 30 108,300 13' 9" 8' 3/4" 5' 8-1/4" 9' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4" 3' 3/4" 6' 11-7/8"AT 112-714 9450 16780 U 6800 30 106,600 14' 9" 9' 3/4" 5' 8-1/4" 10' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4"† 3' 3/4" 6' 11-7/8"AT 112-814 9190 16520 U 6540 40 118,600 13' 9" 8' 3/4" 5' 8-1/4" 9' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4" 3' 3/4" 6' 11-7/8"AT 112-914 9710 17040 U 7060 40 116,600 14' 9" 9' 3/4" 5' 8-1/4" 10' 7" 8-1/2" 13' 11-3/4" 1' 3-1/4"† 3' 3/4" 6' 11-7/8"

��

*112-012 to 112-912(1) 8” Inlet

(1) 8” Outlet

*112-314 to 112-914(1) 10” Inlet

(1) 10” Outlet

F





†




AT 112-018 25 2099 1620 1931 1483 1700 1312 1464 1144 1955 1518AT 112-118 30 2199 1705 2029 1563 1788 1388 1543 1216 2054 1600AT 112-218 25 2252 1786 2091 1651 1865 1479 1632 1308 2114 1685AT 112-318 30 2367 1885 2200 1744 1967 1568 1724 1392 2224 1780AT 112-418 30 2439 1968 2273 1834 2046 1670 1815 1505 2297 1869AT 112-518 40 2585 2073 2407 1922 2159 1735 1901 1548 2433 1961AT 112-618 40 2674 2160 2493 2015 2245 1836 1994 1662 2519 2053AT 112-718 50 2759 2221 2572 2065 2312 1868 2043 1673 2599 2105AT 112-818 50 2870 2319 2676 2164 2410 1974 2142 1787 2704 2204AT 112-918 60 2978 2407 2776 2246 2501 2049 2223 1856 2805 2287AT 112-520 50 2669 2089 2470 1920 2188 1711 1896 1505 2500 1963AT 112-620 40 2767 2234 2579 2082 2322 1896 2061 1711 2606 2121AT 112-720 50 2897 2324 2699 2156 2421 1946 2132 1738 2728 2200AT 112-820 50 2991 2415 2788 2254 2511 2054 2230 1859 2817 2295AT 112-920 60 3102 2506 2891 2338 2604 2132 2315 1930 2922 2381



AT 112-018 25 1837 1432 1576 1950 1238 1526 1263 1662 1005 1310AT 112-118 30 1930 1509 1661 2049 1309 1609 1335 1748 1069 1386AT 112-218 25 1999 1598 1742 2109 1402 1693 1429 1827 1164 1477AT 112-318 30 2105 1690 1841 2219 1488 1789 1514 1927 1242 1565AT 112-418 30 2180 1784 1925 2292 1596 1877 1621 2009 1367 1668AT 112-518 40 2306 1865 2026 2428 1652 1971 1679 2118 1389 1732AT 112-618 40 2391 1960 2114 2513 1757 2061 1783 2204 1512 1834AT 112-718 50 2467 2005 2171 2593 1779 2115 1809 2269 1506 1866AT 112-818 50 2567 2106 2270 2698 1889 2214 1917 2366 1632 1971AT 112-918 60 2663 2185 2355 2799 1961 2297 1991 2455 1695 2047AT 112-520 50 2355 1856 2036 2493 1619 1974 1649 2140 1333 1708AT 112-620 40 2474 2025 2185 2600 1814 2130 1841 2280 1554 1894AT 112-720 50 2585 2092 2272 2721 1853 2210 1884 2374 1560 1944AT 112-820 50 2674 2192 2364 2810 1965 2305 1994 2465 1691 2051AT 112-920 60 2774 2275 2452 2915 2040 2391 2070 2557 1759 2129



65




AT 112-018 10370 19640 U 6810 25 129,600 13' 3" 7' 3/4" 9' 1" 18' 0" 1' 3-1/4" 2' 6-3/4" 9' 0"AT 112-118 10480 19750 U 6920 30 137,400 13' 3" 7' 3/4" 9' 1" 18' 0" 1' 3-1/4" 2' 6-3/4" 9' 0"AT 112-218 11150 20420 U 7590 25 127,400 14' 3" 8' 3/4" 10' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"† 9' 0"AT 112-318 11260 20530 U 7700 30 135,000 14' 3" 8' 3/4" 10' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"† 9' 0"AT 112-418 12000 21270 U 8440 30 132,900 15' 3" 9' 3/4" 11' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"† 9' 0"AT 112-518 11520 20790 U 7960 40 147,700 14' 3" 8' 3/4" 10' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"† 9' 0"AT 112-618 12260 21530 U 8700 40 145,300 15' 3" 9' 3/4" 11' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"† 9' 0"AT 112-718 11580 20850 U 8020 50 158,500 14' 3" 8' 3/4" 10' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"† 9' 0"AT 112-818 12320 21590 U 8760 50 155,600 15' 3" 9' 3/4" 11' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"† 9' 0"AT 112-918 12430 21700 U 8870 60 165,000 15' 3" 9' 3/4" 11' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"† 9' 0"AT 112-520 11500 21900 U 7690 50 165,300 13' 3" 7' 3/4" 9' 1" 20' 0" 1' 3-1/4" 2' 6-3/4"† 10' 0"AT 112-620 13070 23470 U 9260 40 148,800 15' 3" 9' 3/4" 11' 1" 20' 0" 1' 3-1/4"† 2' 6-3/4"† 10' 0"AT 112-720 12230 22630 U 8420 50 162,200 14' 3" 8' 3/4" 10' 1" 20' 0" 1' 3-1/4" 2' 6-3/4"† 10' 0"AT 112-820 13130 23530 U 9320 50 159,500 15' 3" 9' 3/4" 11' 1" 20' 0" 1' 3-1/4"† 2' 6-3/4"† 10' 0"AT 112-920 13240 23640 U 9430 60 169,100 15' 3" 9' 3/4" 11' 1" 20' 0" 1' 3-1/4"† 2' 6-3/4"† 10' 0"

11' 10"

H

74 1/4

T

Q

L

9

5 1/4

P

10 BFW/GROOVED OUTLET

10 BFW/GROOVED INLET

3 FPT OVERFLOW

3 FPT DRAIN

2 MPT MAKE-UP

S

3/8

2

25 1/4

16 7/8

8 1/2

3 5/8

F

ACCESS DOOR


ACCESS DOOR

7

��

F





†




AT 212-024 (2) 20 2897 2245 2671 2057 2354 1826 2031 1599 2705 2106AT 212-124 (2) 15 2877 2274 2669 2099 2377 1879 2073 1658 2700 2146AT 212-224 (2) 25 3088 2410 2854 2213 2524 1970 2186 1729 2888 2263AT 212-324 (2) 20 3115 2480 2895 2294 2587 2061 2267 1829 2927 2342AT 212-424 (2) 30 3250 2549 3009 2344 2670 2091 2315 1843 3044 2398AT 212-524 (2) 25 3333 2668 3102 2473 2780 2229 2445 1986 3136 2523AT 212-624 (2) 25 3446 2783 3212 2595 2893 2364 2569 2138 3246 2644AT 212-724 (2) 30 3524 2831 3284 2629 2949 2375 2600 2123 3319 2682AT 212-824 (2) 30 3653 2951 3405 2754 3067 2510 2726 2272 3441 2804AT 212-924 (2) 40 3906 3157 3642 2946 3281 2688 2917 2435 3680 3001AT 212-128 (2) 25 3378 2617 3114 2398 2744 2128 2367 1863 3154 2455AT 212-228 (2) 20 3408 2697 3164 2491 2818 2232 2460 1969 3199 2546AT 212-328 (2) 30 3559 2772 3287 2546 2906 2265 2514 1987 3327 2604AT 212-428 (2) 25 3637 2895 3380 2677 3020 2405 2646 2134 3417 2733AT 212-528 (2) 25 3752 3027 3497 2822 3148 2569 2793 2315 3534 2875AT 212-628 (2) 30 3851 3079 3583 2854 3210 2572 2821 2289 3622 2911AT 212-728 (2) 30 3983 3216 3712 2999 3343 2732 2968 2469 3751 3055AT 212-828 (2) 40 4187 3367 3902 3129 3506 2828 3094 2532 3943 3191AT 212-928 (2) 40 4353 3517 4058 3282 3655 2992 3249 2709 4100 3342



AT 212-024 (2) 20 2541 1986 2186 2697 1722 2118 1756 2301 1405 1823AT 212-124 (2) 15 2549 2031 2219 2693 1777 2157 1811 2327 1472 1876AT 212-224 (2) 25 2721 2138 2346 2880 1862 2275 1899 2469 1527 1967AT 212-324 (2) 20 2771 2223 2421 2920 1957 2353 1991 2535 1632 2058AT 212-424 (2) 30 2870 2266 2484 3036 1979 2410 2016 2611 1635 2088AT 212-524 (2) 25 2972 2398 2605 3128 2119 2534 2157 2727 1777 2226AT 212-624 (2) 25 3081 2524 2723 3238 2262 2655 2296 2840 1944 2361AT 212-724 (2) 30 3147 2551 2767 3311 2261 2695 2299 2892 1909 2372AT 212-824 (2) 30 3267 2679 2888 3433 2402 2816 2438 3011 2070 2507AT 212-924 (2) 40 3494 2867 3090 3672 2572 3013 2611 3221 2223 2685AT 212-128 (2) 25 2963 2315 2549 3145 2007 2468 2047 2683 1638 2124AT 212-228 (2) 20 3022 2410 2631 3191 2111 2558 2151 2759 1750 2228AT 212-328 (2) 30 3133 2458 2699 3318 2138 2617 2181 2842 1752 2261AT 212-428 (2) 25 3234 2595 2826 3409 2283 2746 2324 2959 1905 2402AT 212-528 (2) 25 3354 2744 2961 3525 2454 2887 2493 3090 2101 2566AT 212-628 (2) 30 3431 2766 3006 3613 2443 2925 2486 3148 2046 2568AT 212-728 (2) 30 3561 2916 3147 3743 2613 3068 2653 3282 2244 2728AT 212-828 (2) 40 3741 3036 3291 3934 2692 3205 2737 3439 2276 2824AT 212-928 (2) 40 3893 3193 3442 4091 2863 3357 2906 3588 2471 2988



67

P

L

N

S

11' 10" 3/8

H

B

T

2

M 2 1/2

(2) 2 MPTMAKE-UP

(2) 3 FPTOVERFLOW

(2) 3 FPTDRAIN

*BFW/GROOVEDOUTLET

*BFW/GROOVEDINLET

25 1/4

16 7/8

O

3 5/8

Q

ACCESSDOOR


ACCESS DOOR

ACCESSDOOR

ACCESS DOOR

F

7

5 1/4


��

*212-024 to 212-924(2) 8” Inlets

(2) 8” Outlets

*212-128 to 212-928(2) 10” Inlets

(2) 10” Outlets


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P L AT/USS UT† N M O S&Q

AT 212-024 14940 27360 U 5050 (2) 20 178,300 13' 3" 7' 3/4" 6' 2-1/4" 9' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-124 15920 28340 U 5540 (2) 15 160,100 14' 3" 8' 3/4" 6' 2-1/4" 10' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-224 15040 27460 U 5100 (2) 25 191,500 13' 3" 7' 3/4" 6' 2-1/4" 9' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-324 16020 28440 U 5590 (2) 20 175,300 14' 3" 8' 3/4" 6' 2-1/4" 10' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-424 15240 27660 U 5200 (2) 30 202,900 13' 3" 7' 3/4" 6' 2-1/4" 9' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-524 16120 28540 U 5640 (2) 25 188,000 14' 3" 8' 3/4" 6' 2-1/4" 10' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-624 17100 29520 U 6130 (2) 25 184,800 15' 3" 9' 3/4" 6' 2-1/4" 11' 2" 24' 2" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-724 16320 28740 U 5740 (2) 30 199,000 14' 3" 8' 3/4" 6' 2-1/4" 10' 2" 24' 2" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-824 17300 29720 U 6230 (2) 30 195,700 15' 3" 9' 3/4" 6' 2-1/4" 11' 2" 24' 2" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-924 17800 30220 U 6480 (2) 40 214,300 15' 3" 9' 3/4" 6' 2-1/4" 11' 2" 24' 2" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 7-1/4" 5' 11-7/8"AT 212-128 16380 31040 U 5550 (2) 25 208,400 14' 3" 7' 3/4" 7' 2-1/4" 10' 1" 28' 2" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-228 17580 32240 U 6150 (2) 20 190,900 15' 3" 8' 3/4" 7' 2-1/4" 11' 1" 28' 2" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-328 16520 31180 U 5620 (2) 30 220,700 14' 3" 7' 3/4" 7' 2-1/4" 10' 1" 28' 2" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-428 17700 32360 U 6210 (2) 25 204,700 15' 3" 8' 3/4" 7' 2-1/4" 11' 1" 28' 2" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-528 18740 33400 U 6730 (2) 25 201,200 16' 3" 9' 3/4" 7' 2-1/4" 12' 1" 28' 2" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-628 17840 32500 U 6280 (2) 30 216,700 15' 3" 8' 3/4" 7' 2-1/4" 11' 1" 28' 2" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-728 18880 33540 U 6800 (2) 30 213,200 16' 3" 9' 3/4" 7' 2-1/4" 12' 1" 28' 2" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-828 18360 33020 U 6540 (2) 40 237,200 15' 3" 8' 3/4" 7' 2-1/4" 11' 1" 28' 2" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"AT 212-928 19400 34060 U 7060 (2) 40 233,100 16' 3" 9' 3/4" 7' 2-1/4" 12' 1" 28' 2" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 8-1/2" 6' 11-7/8"

F





†




AT 212-036 (2) 20 4255 3358 3944 3095 3509 2766 3057 2440 3990 3163AT 212-136 (2) 30 4399 3410 4058 3126 3576 2776 3086 2432 4108 3200AT 212-236 (2) 25 4613 3719 4299 3465 3867 3149 3429 2834 4344 3530AT 212-336 (2) 30 4734 3770 4400 3487 3933 3135 3447 2783 4449 3560AT 212-436 (2) 30 4878 3936 4546 3669 4093 3341 3631 3011 4594 3738AT 212-536 (2) 40 5170 4146 4815 3845 4318 3470 3802 3096 4867 3923AT 212-636 (2) 40 5349 4320 4986 4030 4490 3672 3989 3324 5038 4105AT 212-736 (2) 50 5518 4443 5144 4131 4624 3737 4086 3346 5198 4211AT 212-836 (2) 50 5741 4639 5352 4329 4821 3948 4285 3575 5408 4408AT 212-936 (2) 60 5955 4813 5552 4492 5002 4099 4447 3712 5610 4575






69

P

36'-2 1/2"

5 1/4

207

108

11'-10" 3/8

H

86 1/4

T

2

216 2 1/2

(2) 2 MPTMAKE-UP

(2) 3 FPTOVERFLOW

(2) 3 FPT DRAIN



25 1/4

16 7/8

8 1/2

3 5/8

108

ACCESSDOOR


ACCESS DOOR

ACCESSDOOR

ACCESS DOOR

F

7




AT 212-036 22460 41000 U 7540 (2) 20 237,300 15' 3" 8' 3/4" 11' 1" 1' 3-1/4" 2' 6-3/4"†AT 212-136 21220 39760 U 6920 (2) 30 274,700 14' 3" 7' 3/4" 10' 1" 1' 3-1/4" 2' 6-3/4"AT 212-236 24040 42580 U 8330 (2) 25 250,800 16' 3" 9' 3/4" 12' 1" 1' 3-1/4"† 2' 6-3/4"†AT 212-336 22780 41320 U 7700 (2) 30 270,100 15' 3" 8' 3/4" 11' 1" 1' 3-1/4" 2' 6-3/4"†AT 212-436 24260 42800 U 8440 (2) 30 265,800 16' 3" 9' 3/4" 12' 1" 1' 3-1/4"† 2' 6-3/4"†AT 212-536 23300 41840 U 7960 (2) 40 295,500 15' 3" 8' 3/4" 11' 1" 1' 3-1/4" 2' 6-3/4"†AT 212-636 24780 43320 U 8700 (2) 40 290,700 16' 3" 9' 3/4" 12' 1" 1' 3-1/4"† 2' 6-3/4"†AT 212-736 23420 41960 U 8020 (2) 50 317,100 15' 3" 8' 3/4" 11' 1" 1' 3-1/4" 2' 6-3/4"†AT 212-836 24900 43440 U 8760 (2) 50 311,400 16' 3" 9' 3/4" 12' 1" 1' 3-1/4"† 2' 6-3/4"†AT 212-936 25120 43660 U 8870 (2) 60 329,900 16' 3" 9' 3/4" 12' 1" 1' 3-1/4"† 2' 6-3/4"†

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F





†




AT 312-036 (3) 20 4393 3408 4054 3125 3574 2776 3084 2433 4103 3199AT 312-136 (3) 15 4360 3449 4047 3185 3604 2854 3146 2517 4092 3256AT 312-236 (3) 25 4681 3658 4328 3359 3830 2991 3317 2628 4380 3435AT 312-336 (3) 20 4720 3760 4388 3479 3923 3128 3439 2778 4436 3552AT 312-436 (3) 20 4854 3916 4524 3651 4073 3324 3613 2996 4571 3719AT 312-536 (3) 25 5048 4045 4700 3748 4213 3381 3707 3013 4750 3824AT 312-636 (3) 25 5219 4215 4865 3931 4381 3582 3891 3241 4916 4005AT 312-736 (3) 30 5338 4290 4974 3985 4468 3602 3941 3223 5026 4066AT 312-836 (3) 30 5533 4470 5158 4171 4645 3802 4129 3442 5212 4248AT 312-936 (3) 40 5916 4782 5516 4462 4969 4072 4417 3688 5574 4545AT 312-042 (3) 15 4806 3784 4449 3482 3954 3104 3440 2733 4500 3559AT 312-142 (3) 25 5123 3972 4726 3642 4166 3235 3595 2834 4784 3729AT 312-242 (3) 15 4928 3965 4590 3688 4125 3342 3648 3001 4639 3761AT 312-342 (3) 20 5165 4090 4795 3780 4274 3386 3734 2990 4848 3860AT 312-442 (3) 25 5509 4388 5121 4060 4578 3650 4013 3241 5178 4145AT 312-542 (3) 25 5683 4586 5296 4275 4769 3892 4231 3508 5352 4355AT 312-642 (3) 30 5833 4668 5429 4326 4865 3900 4278 3473 5487 4414AT 312-742 (3) 30 6032 4871 5623 4543 5063 4138 4496 3742 5682 4628AT 312-842 (3) 40 6342 5102 5911 4743 5312 4289 4690 3839 5973 4836AT 312-942 (3) 40 6593 5327 6146 4971 5536 4532 4920 4104 6210 5062






71

(3) 3 FPT OVERFLOW

H

B

T

11' 10" 3/8

P

25 1/4

16 7/8

O

3 5/8

L

M 2 1/2

Q

(3) 2 MPT MAKE-UP

(3) 3 FPT DRAIN

*BFW/GROOVEDOUTLET

*BFW/GROOVEDINLET

2

5 1/4

S

ACCESS DOOR


ACCESS DOOR

ACCESS DOOR


ACCESS DOOR

F

7

N

9

5 1/4



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P O L AT/USS UT† N M S&Q

AT 312-036 22260 40890 U5050 (3) 20 270,400 14' 3" 7' 3/4" 7' 2-1/4" 10' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-136 23730 42360 U5540 (3) 15 242,600 15' 3" 8' 3/4" 7' 2-1/4" 11' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-236 22410 41040 U5100 (3) 25 290,000 14' 3" 7' 3/4" 7' 2-1/4" 10' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-336 23880 42510 U5590 (3) 20 265,500 15' 3" 8' 3/4" 7' 2-1/4" 11' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-436 25350 43980 U6080 (3) 20 261,400 16' 3" 9' 3/4" 7' 2-1/4" 12' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-536 24030 42660 U5640 (3) 25 284,700 15' 3" 8' 3/4" 7' 2-1/4" 11' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-636 25500 44130 U6130 (3) 25 280,100 16' 3" 9' 3/4" 7' 2-1/4" 12' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-736 24330 42960 U5740 (3) 30 301,300 15' 3" 8' 3/4" 7' 2-1/4" 11' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4" 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-836 25800 44430 U6230 (3) 30 296,400 16' 3" 9' 3/4" 7' 2-1/4" 12' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-936 26550 45180 U6480 (3) 40 324,500 16' 3" 9' 3/4" 7' 2-1/4" 12' 2" 7-1/4" 36' 4-1/4" 1' 3-1/4"† 3' 3/4" 11' 2-3/4" 11' 11-3/4" 5' 11-7/8"AT 312-042 26790 48780 U6090 (3) 15 263,400 16' 3" 8' 3/4" 8' 2-1/4" 12' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-142 25170 47160 U5550 (3) 25 315,200 15' 3" 7' 3/4" 8' 2-1/4" 11' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-242 28350 50340 U6610 (3) 15 259,100 17' 3" 9' 3/4" 8' 2-1/4" 13' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-342 26970 48960 U6150 (3) 20 288,500 16' 3" 8' 3/4" 8' 2-1/4" 12' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-442 27150 49140 U6210 (3) 25 309,500 16' 3" 8' 3/4" 8' 2-1/4" 12' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-542 28710 50700 U6730 (3) 25 304,600 17' 3" 9' 3/4" 8' 2-1/4" 13' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-642 27360 49350 U6280 (3) 30 327,600 16' 3" 8' 3/4" 8' 2-1/4" 12' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-742 28920 50910 U6800 (3) 30 322,400 17' 3" 9' 3/4" 8' 2-1/4" 13' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-842 28140 50130 U6540 (3) 40 359,100 16' 3" 8' 3/4" 8' 2-1/4" 12' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4" 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"AT 312-942 29700 51690 U7060 (3) 40 352,800 17' 3" 9' 3/4" 8' 2-1/4" 13' 1" 8-1/2" 42' 4-1/4" 1' 3-1/4"† 3' 3/4" 13' 2-3/4" 13' 11-3/4" 6' 11-7/8"

��

*312-036 to 312-936(3) 8” Inlets

(3) 8” Outlets

*312-042 to 312-942(3) 10” Inlets

(3) 10” Outlets

F





†




AT 312-054 (3) 30 6635 5146 6122 4719 5397 4192 4658 3674 6196 4831AT 312-154 (3) 25 6791 5386 6305 4979 5625 4464 4923 3947 6375 5083AT 312-254 (3)40 7231 5663 6694 5204 5930 4639 5140 4083 6773 5323AT 312-354 (3) 30 7136 5685 6634 5260 5931 4730 5199 4201 6707 5370AT 312-454 (3) 30 7352 5933 6852 5531 6169 5036 5474 4540 6924 5634AT 312-554 (3) 40 7792 6251 7258 5798 6511 5233 5734 4671 7337 5916AT 312-654 (3) 40 8062 6512 7515 6075 6768 5536 6013 5010 7594 6188AT 312-754 (3) 50 8318 6699 7753 6228 6971 5635 6162 5047 7834 6349AT 312-854 (3) 50 8652 6992 8067 6525 7266 5951 6459 5389 8151 6645AT 312-954 (3) 60 8976 7255 8369 6771 7540 6178 6702 5596 8456 6895AT 312-260 (3) 25 6833 5372 6323 4944 5618 4404 4884 3876 6396 5053AT 312-360 (3) 25 7030 5656 6547 5259 5884 4765 5202 4279 6617 5363AT 312-460 (3) 50 7964 6232 7369 5724 6525 5101 5654 4486 7457 5855AT 312-560 (3) 40 8027 6399 7464 5924 6677 5331 5856 4740 7546 6048AT 312-660 (3) 40 8262 6668 7700 6216 6933 5660 6152 5105 7781 6332AT 312-760 (3) 50 8648 6938 8056 6434 7226 5807 6363 5183 8142 6564AT 312-860 (3) 50 8928 7211 8322 6727 7495 6130 6658 5548 8410 6853AT 312-960 (3) 60 9260 7481 8632 6980 7775 6363 6910 5760 8722 7109






73

(3) 3 FPT OVERFLOW

H

98 1/4

T

11' 10" 3/8

P

25 1/4

16 7/8

8 1/2

3 5/8

L

M 2 1/2

Q

(3) 2 MPT MAKE-UP

(3) 3 FPT DRAIN


(3) 10 BFW/GROOVED INLET

2

5 1/4

S

ACCESS DOOR


ACCESS DOOR

ACCESS DOOR


ACCESS DOOR

F

7

N

9

5 1/4



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P L AT/USS UT N M S&Q

AT 312-054 32280 60090 U 6920 (3) 30 412,300 15' 3" 7' 3/4" 11' 1" 54' 5" 1' 3-1/4" 2' 6-3/4" 17' 3" 18' 0" 9' 0"AT 312-154 34290 62100 U 7590 (3) 25 382,300 16' 3" 8' 3/4" 12' 1" 54' 5" 1' 3-1/4" 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-254 33060 60870 U 7180 (3) 40 451,700 15' 3" 7' 3/4" 11' 1" 54' 5" 1' 3-1/4" 2' 6-3/4" 17' 3" 18' 0" 9' 0"AT 312-354 34620 62430 U 7700 (3) 30 405,300 16' 3" 8' 3/4" 12' 1" 54' 5" 1' 3-1/4" 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-454 36840 64650 U 8440 (3) 30 398,900 17' 3" 9' 3/4" 13' 1" 54' 5" 1' 3-1/4"† 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-554 35400 63210 U 7960 (3) 40 443,500 16' 3" 8' 3/4" 12' 1" 54' 5" 1' 3-1/4" 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-654 37620 65430 U 8700 (3) 40 436,200 17' 3" 9' 3/4" 13' 1" 54' 5" 1' 3-1/4"† 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-754 35580 63390 U 8020 (3) 50 475,900 16' 3" 8' 3/4" 12' 1" 54' 5" 1' 3-1/4" 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-854 37800 65610 U 8760 (3) 50 467,400 17' 3" 9' 3/4" 13' 1" 54' 5" 1' 3-1/4"† 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-954 38130 65940 U 8870 (3) 60 495,100 17' 3" 9' 3/4" 13' 1" 54' 5" 1' 3-1/4"† 2' 6-3/4"† 17' 3" 18' 0" 9' 0"AT 312-260 36300 67500 U 7990 (3) 25 390,100 16' 3" 8' 3/4" 12' 1" 60' 5" 1' 3-1/4" 2' 6-3/4"† 19' 3" 20' 0" 10' 0""AT 312-360 39000 70200 U 8890 (3) 25 383,700 17' 3" 9' 3/4" 13' 1" 60' 5" 1' 3-1/4"† 2' 6-3/4"† 19' 3" 20' 0" 10' 0"AT 312-460 35400 66600 U 7690 (3) 50 493,600 15' 3" 7' 3/4" 11' 1" 60' 5" 1' 3-1/4" 2' 6-3/4" 19' 3" 20' 0" 10' 0"AT 312-560 37410 68610 U 8360 (3) 40 451,400 16' 3" 8' 3/4" 12' 1" 60' 5" 1' 3-1/4" 2' 6-3/4"† 19' 3" 20' 0" 10' 0"AT 312-660 40110 71310 U 9260 (3) 40 444,400 17' 3" 9' 3/4" 13' 1" 60' 5" 1' 3-1/4"† 2' 6-3/4"† 19' 3" 20' 0" 10' 0"AT 312-760 37590 68790 U 8420 (3) 50 484,000 16' 3" 8' 3/4" 12' 1" 60' 5" 1' 3-1/4" 2' 6-3/4"† 19' 3" 20' 0" 10' 0"AT 312-860 40290 71490 U 9320 (3) 50 476,100 17' 3" 9' 3/4" 13' 1" 60' 5" 1' 3-1/4"† 2' 6-3/4"† 19' 3" 20' 0" 10' 0"AT 312-960 40620 71820 U 9430 (3) 60 504,600 17' 3" 9' 3/4" 13' 1" 60' 5" 1' 3-1/4"† 2' 6-3/4"† 19' 3" 20' 0" 10' 0"

��

F





†










75



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T B P O L AT/USS UT†

AT 220-112 14000 25080 U 4750 (2) 15 143,900 14' 2" 7' 11-3/4" 6' 2-1/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4"AT 220-212 13240 24320 U 4370 (2) 25 172,300 13' 2" 6' 11-3/4" 6' 2-1/4" 9' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4"AT 220-312 14100 25180 U 4800 (2) 20 157,400 14' 2" 7' 11-3/4" 6' 2-1/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4"AT 220-412 13440 24520 U 4470 (2) 30 182,600 13' 2" 6' 11-3/4" 6' 2-1/4" 9' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4"AT 220-512 14200 25280 U 4850 (2) 25 169,100 14' 2" 7' 11-3/4" 6' 2-1/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4"AT 220-612 15040 26120 U 5270 (2) 25 166,300 15' 2" 8' 11-3/4" 6' 2-1/4" 11' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4"AT 220-712 14400 25480 U 4950 (2) 30 179,000 14' 2" 7' 11-3/4" 6' 2-1/4" 10' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4" 3' 3/4"AT 220-812 15240 26320 U 5370 (2) 30 176,300 15' 2" 8' 11-3/4" 6' 2-1/4" 11' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4"AT 220-912 15740 26820 U 5620 (2) 40 185,000 15' 2" 8' 11-3/4" 6' 2-1/4" 11' 1" 7-1/4" 11' 11-3/4" 1' 3-1/4"† 3' 3/4"AT 220-118 18060 34870 U 5760 (2) 20 213,600 14' 2" 6' 11-3/4" 7' 2-1/4" 10' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4"AT 220-218 20600 37410 U 7030 (2) 15 188,600 16' 2" 8' 11-3/4" 7' 2-1/4" 12' 0" 8-1/2" 18' 0" 1' 3-1/4"† 3' 3/4"AT 220-318 19440 36250 U 6450 (2) 20 210,000 15' 2" 7' 11-3/4" 7' 2-1/4" 11' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4"AT 220-418 18360 35170 U 5910 (2) 30 243,000 14' 2" 6' 11-3/4" 7' 2-1/4" 10' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4"AT 220-518 19540 36350 U 6500 (2) 25 225,200 15' 2" 7' 11-3/4" 7' 2-1/4" 11' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4"AT 220-618 19740 36550 U 6600 (2) 30 238,600 15' 2" 7' 11-3/4" 7' 2-1/4" 11' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4"AT 220-718 21000 37810 U 7230 (2) 30 234,800 16' 2" 8' 11-3/4" 7' 2-1/4" 12' 0" 8-1/2" 18' 0" 1' 3-1/4"† 3' 3/4"AT 220-818 20240 37050 U 6850 (2) 40 261,000 15' 2" 7' 11-3/4" 7' 2-1/4" 11' 0" 8-1/2" 18' 0" 1' 3-1/4" 3' 3/4"AT 220-918 21500 38310 U 7480 (2) 40 256,800 16' 2" 8' 11-3/4" 7' 2-1/4" 12' 1/4" 8-1/2" 18' 0" 1' 3-1/4"† 3' 3/4"

20' 5/8" L

H

B

3/8 117 3/4 5 1/8

112 1/2

113 1/2

93 5/8 25 1/4

16 7/8

O

3 3/4

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN

(2) 2 MPT MAKE-UP

P

58 7/8 *BFW/GROOVED

INLET

*BFW/GROOVED OUTLET

T

F

108 3/4

2

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR


ACCESS DOOR

7

��

*220-112 to 220-912(2) 8" Inlet

(2) 8" Outlet

*220-118 to 220-918(2) 10" Inlet

(2) 10" Outlet

F





†










77

L 3/8

117 3/4

112 1/2 113 1/2

93 5/8 25 1/4 16 7/8

O

3 3/4

* MAKE-UP

* OVERFLOW

* DRAIN

* BFW/GROOVEDOUTLET

P

58 7/8 * BFW/GROOVEDINLET

20' 5/8"

8' 2-1/4"

T

H

ACCESS DOOR

2

108 3/4

5 1/8

F

7

ACCESS DOOR


ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

Access Doors Swing Inside Unit MODELS: AT/UT/USS 420-124 to 420-936

Four-Cell Cooling Towers


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P O L AT/USS UT†

AT 420-124 27700 49840 U 4750 (4) 15 286,500 16' 2" 7' 11-3/4" 12' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4" 3' 3/4"AT 420-224 26180 48320 U 4370 (4) 25 343,000 15' 2" 6' 11-3/4" 11' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4" 3' 3/4"AT 420-324 27900 50040 U 4800 (4) 20 313,600 16' 2" 7' 11-3/4" 12' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4" 3' 3/4"AT 420-424 26580 48720 U 4470 (4) 30 363,600 15' 2" 6' 11-3/4" 11' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4" 3' 3/4"AT 420-524 28100 50240 U 4850 (4) 25 336,500 16' 2" 7' 11-3/4" 12' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4" 3' 3/4"AT 420-624 29780 51920 U 5270 (4) 25 331,400 17' 2" 8' 11-3/4" 13' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4"† 3' 3/4"AT 420-724 28500 50640 U 4950 (4) 30 356,600 16' 2" 7' 11-3/4" 12' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4" 3' 3/4"AT 420-824 30180 52320 U 5370 (4) 30 350,900 17' 2" 8' 11-3/4" 13' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4"† 3' 3/4"AT 420-924 31180 53320 U 5620 (4) 40 368,000 17' 2" 8' 11-3/4" 13' 1" 9-1/2" 24' 1-3/4" 1' 3-1/4"† 3' 3/4"AT 420-136 35780 69740 L 6370 (4) 20 412,300 15' 2" 6' 11-3/4" 11' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4"AT 420-236 40860 74820 U 7030 (4) 15 364,200 17' 2" 8' 11-3/4" 13' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4"† 3' 3/4"AT 420-336 38540 72500 U 6450 (4) 20 405,800 16' 2" 7' 11-3/4" 12' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4"AT 420-436 36380 70340 L 6370 (4) 30 469,300 15' 2" 6' 11-3/4" 11' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4"AT 420-536 38740 72700 U 6500 (4) 25 435,200 16' 2" 7' 11-3/4" 12' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4"AT 420-636 39140 73100 U 6600 (4) 30 460,900 16' 2" 7' 11-3/4" 12' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4"AT 420-736 41660 75620 U 7230 (4) 30 453,400 17' 2" 8' 11-3/4" 13' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4"† 3' 3/4"AT 420-836 40140 74100 U 6850 (4) 40 504,500 16' 2" 7' 11-3/4" 12' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4" 3' 3/4"AT 420-936 42660 76620 U 7480 (4) 40 496,200 17' 2" 8' 11-3/4" 13' 0" 8-1/2" 36' 2-1/2" 1' 3-1/4"† 3' 3/4"

��

*420-124 to 420-924(4) 8" Inlet

(2) 12" Outlet(2) 3 FPT Overflow(2) 2 MPT Make-Up

(2) 3 FPT Drain

*420-136 to 420-936(4) 10" Inlet

(4) 10" Outlet(4) 3 FPT Overflow(4) 2 MPT Make-Up

(4) 3 FPT Drain

F





†




AT 224-018 (2) 25 4197 3241 3862 2966 3399 2625 2928 2289 3911 3036AT 224-118 (2) 30 4399 3410 4058 3126 3576 2776 3086 2432 4108 3200AT 224-218 (2) 25 4505 3571 4182 3301 3730 2959 3263 2615 4228 3370AT 224-318 (2) 40 4795 3754 4438 3449 3931 3074 3406 2704 4491 3527AT 224-418 (2) 30 4734 3770 4400 3487 3933 3135 3447 2783 4449 3560AT 224-518 (2) 30 4878 3936 4546 3669 4093 3341 3631 3011 4594 3738AT 224-618 (2) 40 5170 4146 4815 3845 4318 3470 3802 3096 4867 3923AT 224-718 (2) 50 5518 4443 5144 4131 4624 3737 4086 3346 5198 4211AT 224-818 (2) 50 5741 4639 5352 4329 4821 3948 4285 3575 5408 4408AT 224-918 (2) 60 5955 4813 5552 4492 5002 4099 4447 3712 5610 4575AT 224-720 (2) 40 5427 4379 5058 4082 4554 3717 4040 3350 5111 4159AT 224-820 (2) 50 5865 4737 5467 4418 4923 4025 4373 3643 5524 4501AT 224-920 (2) 60 6083 4914 5671 4585 5107 4179 4539 3782 5730 4670



AT 224-018 (2) 25 3675 2865 3152 3900 2477 3052 2526 3323 2010 2620AT 224-118 (2) 30 3860 3018 3321 4097 2617 3218 2670 3496 2137 2771AT 224-218 (2) 25 3998 3196 3484 4218 2805 3387 2859 3654 2328 2954AT 224-318 (2) 40 4232 3335 3658 4479 2909 3546 2963 3845 2395 3069AT 224-418 (2) 30 4211 3380 3681 4438 2976 3578 3029 3854 2484 3130AT 224-518 (2) 30 4360 3567 3850 4583 3191 3754 3242 4017 2733 3336AT 224-618 (2) 40 4613 3731 4051 4855 3303 3941 3359 4235 2778 3465AT 224-718 (2) 50 4933 4009 4343 5186 3559 4230 3618 4537 3012 3732AT 224-818 (2) 50 5134 4211 4539 5395 3778 4427 3834 4733 3264 3943AT 224-918 (2) 60 5327 4370 4710 5597 3922 4594 3981 4911 3391 4093AT 224-720 (2) 40 4851 3969 4284 5099 3551 4177 3607 4469 3041 3712AT 224-820 (2) 50 5244 4297 4635 5511 3851 4520 3909 4833 3311 4020AT 224-920 (2) 60 5439 4460 4809 5717 3998 4690 4058 5014 3445 4173



79

24' 1-1/8" L

H

98 1/4

3/8

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN


P

71

T

2

ACCESS DOOR

ACCESS DOOR

F

7

ACCESSDOOR

ACCESSDOOR

8 1/2

3 3/4

16 7/8

25 1/4

117 7/8

133

136 3/4

137 3/4 142 5 1/8






AT 224-018 21060 39600 U 6810 (2) 25 258,200 15' 3" 7' 3/4" 11' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"AT 224-118 21280 39820 U 6920 (2) 30 274,000 15' 3" 7' 3/4" 11' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"AT 224-218 22620 41160 U 7590 (2) 25 254,100 16' 3" 8' 3/4" 12' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"†AT 224-318 21800 40340 U 7180 (2) 40 300,100 15' 3" 7' 3/4" 11' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"AT 224-418 22840 41380 U 7700 (2) 30 268,800 16' 3" 8' 3/4" 12' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"†AT 224-518 24320 42860 U 8440 (2) 30 264,800 17' 3" 9' 3/4" 13' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"†AT 224-618 23360 41900 U 7960 (2) 40 294,400 16' 3" 8' 3/4" 12' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"†AT 224-718 23480 42020 U 8020 (2) 50 315,900 16' 3" 8' 3/4" 12' 1" 18' 0" 1' 3-1/4" 2' 6-3/4"†AT 224-818 24960 43500 U 8760 (2) 50 310,300 17' 3" 9' 3/4" 13' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"†AT 224-918 25180 43720 U 8870 (2) 60 328,700 17' 3" 9' 3/4" 13' 1" 18' 0" 1' 3-1/4"† 2' 6-3/4"†AT 224-720 26400 47200 U 9260 (2) 40 293,700 17' 3" 9' 3/4" 13' 1" 20' 0" 1' 3-1/4"† 2' 6-3/4"†AT 224-820 26520 47320 U 9320 (2) 50 314,700 17' 3" 9' 3/4" 13' 1" 20' 0" 1' 3-1/4"† 2' 6-3/4"†AT 224-920 26740 47540 U 9430 (2) 60 333,500 17' 3" 9' 3/4" 13' 1" 20' 0" 1' 3-1/4"† 2' 6-3/4"†

��

F





†










81

24' 1-1/8" 24' 1-3/4"

(2) 2 MPT MAKE-UP

(2) 3 FPT OVERFLOW

(2) 3 FPT DRAIN


P

71

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

9 1/2

3 3/4

16 7/8

25 1/4 117 7/8 133

136 3/4

137 3/4 142 5 1/8

98 1/4

T

F

H

2

3/8

7

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR



MODELS: AT/UT/USS 424-024 to 424-924Four-Cell Cooling Towers


Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T P AT/USS UT†

AT 424-024 30040 54900 L 5020 (4) 15 322,300 15' 3" 7' 3/4" 11' 2" 1' 3-1/4" 3' 3/4"AT 424-124 30240 55100 U 5050 (4) 20 353,400 15' 3" 7' 3/4" 11' 2" 1' 3-1/4" 3' 3/4"AT 424-224 32200 57060 U 5540 (4) 15 317,000 16' 3" 8' 3/4" 12' 2" 1' 3-1/4" 3' 3/4"AT 424-324 30440 55300 U 5100 (4) 25 379,400 15' 3" 7' 3/4" 11' 2" 1' 3-1/4" 3' 3/4"AT 424-424 32400 57260 U 5590 (4) 20 347,400 16' 3" 8' 3/4" 12' 2" 1' 3-1/4" 3' 3/4"AT 424-524 30840 55700 U 5200 (4) 30 401,900 15' 3" 7' 3/4" 11' 2" 1' 3-1/4" 3' 3/4"AT 424-624 34360 59220 U 6080 (4) 20 341,900 17' 3" 9' 3/4" 13' 2" 1' 3-1/4"† 3' 3/4"AT 424-724 32600 57460 U 5640 (4) 25 372,500 16' 3" 8' 3/4" 12' 2" 1' 3-1/4" 3' 3/4"AT 424-824 33000 57860 U 5740 (4) 30 394,400 16' 3" 8' 3/4" 12' 2" 1' 3-1/4" 3' 3/4"AT 424-924 35960 60820 U 6480 (4) 40 424,600 17' 3" 9' 3/4" 13' 2" 1' 3-1/4"† 3' 3/4"

��

F





†










83

24' 1-1/8" L

(4) 2 MPT MAKE-UP

(4) 3 FPT OVERFLOW

(4) 3 FPT DRAIN


P

71

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

8 1/2

3 3/4

16 7/8

25 1/4 117 7/8 133

136 3/4 137 3/4

142 5 1/8

H

98 1/4

3/8

T

2


ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

F


7



Model Heaviest Motor FlowNo. Shipping Operating Section� (HP) (CFM) H T L P AT/USS UT

AT 424-028 33480 62940 L 5760 (4) 20 372,900 15' 3" 7' 3/4" 28' 1-3/4" 11' 1" 1' 3-1/4" 3' 3/4"†AT 424-128 37960 67420 U 6610 (4) 15 329,600 17' 3" 9' 3/4" 28' 1-3/4" 13' 1" 1' 3-1/4"† 3' 3/4"†AT 424-228 33720 63180 L 5760 (4) 25 400,300 15' 3" 7' 3/4" 28' 1-3/4" 11' 1" 1' 3-1/4" 3' 3/4"†AT 424-328 36120 65580 U 6150 (4) 20 366,600 16' 3" 8' 3/4" 28' 1-3/4" 12' 1" 1' 3-1/4" 3' 3/4"†AT 424-428 38200 67660 U 6670 (4) 20 360,700 17' 3" 9' 3/4" 28' 1-3/4" 13' 1" 1' 3-1/4"† 3' 3/4"†AT 424-528 36360 65820 U 6210 (4) 25 393,600 16' 3" 8' 3/4" 28' 1-3/4" 12' 1" 1' 3-1/4" 3' 3/4"†AT 424-628 38440 67900 U 6730 (4) 25 387,300 17' 3" 9' 3/4" 28' 1-3/4" 13' 1" 1' 3-1/4"† 3' 3/4"†AT 424-728 36640 66100 U 6280 (4) 30 416,200 16' 3" 8' 3/4" 28' 1-3/4" 12' 1" 1' 3-1/4" 3' 3/4"†AT 424-828 38720 68180 U 6800 (4) 30 409,900 17' 3" 9' 3/4" 28' 1-3/4" 13' 1" 1' 3-1/4"† 3' 3/4"†AT 424-928 39760 69220 U 7060 (4) 40 448,300 17' 3" 9' 3/4" 28' 1-3/4" 13' 1" 1' 3-1/4"† 3' 3/4"†AT 424-036 42000 79280 L 7480 (4) 20 463,300 15' 3" 7' 3/4" 36' 2-1/4" 11' 1" 1' 3-1/4" 2' 6-3/4"AT 424-136 42200 79480 L 7480 (4) 25 498,000 15' 3" 7' 3/4" 36' 2-1/4" 11' 1" 1' 3-1/4" 2' 6-3/4"AT 424-236 45320 82600 U 7590 (4) 25 489,600 16' 3" 8' 3/4" 36' 2-1/4" 12' 1" 1' 3-1/4" 2' 6-3/4"†AT 424-336 43680 80960 L 7480 (4) 40 578,400 15' 3" 7' 3/4" 36' 2-1/4" 11' 1" 1' 3-1/4" 2' 6-3/4"AT 424-436 45760 83040 U 7700 (4) 30 519,200 16' 3" 8' 3/4" 36' 2-1/4" 12' 1" 1' 3-1/4" 2' 6-3/4"†AT 424-536 48720 86000 U 8440 (4) 30 510,800 17' 3" 9' 3/4" 36' 2-1/4" 13' 1" 1' 3-1/4"† 2' 6-3/4"†AT 424-636 46800 84080 U 7960 (4) 40 567,900 16' 3" 8' 3/4" 36' 2-1/4" 12' 1" 1' 3-1/4" 2' 6-3/4"†AT 424-736 47040 84320 U 8020 (4) 50 609,200 16' 3" 8' 3/4" 36' 2-1/4" 12' 1" 1' 3-1/4" 2' 6-3/4"†AT 424-836 50000 87280 U 8760 (4) 50 598,800 17' 3" 9' 3/4" 36' 2-1/4" 13' 1" 1' 3-1/4"† 2' 6-3/4"†AT 424-936 50440 87720 U 8870 (4) 60 634,500 17' 3" 9' 3/4" 36' 2-1/4" 13' 1" 1' 3-1/4"† 2' 6-3/4"†

��

F





†




AT 114-0124 30 2919 2232 2677 2031 2345 1785 2004 1545 2711 2082AT 114-0224 40 3135 2409 2882 2204 2532 1947 2173 1691 2918 2258AT 114-0324 25 3187 2562 2967 2378 2665 2153 2352 1933 2998 2425AT 114-0424 50 3345 2588 3081 2369 2713 2099 2339 1834 3120 2425AT 114-0524 30 3325 2675 3097 2489 2783 2255 2462 2025 3130 2538AT 114-0624 40 3463 2741 3215 2533 2865 2269 2502 2003 3250 2588AT 114-0724 40 3603 2905 3358 2706 3021 2459 2678 2214 3393 2757AT 114-0824 50 3670 2921 3411 2701 3048 2427 2671 2153 3449 2758AT 114-0924 50 3793 3060 3535 2852 3182 2597 2823 2340 3572 2906AT 114-1024 60 3876 3098 3606 2871 3231 2587 2838 2302 3645 2929AT 114-1124 60 4011 3239 3739 3020 3367 2751 2989 2486 3778 3077AT 114-1224 75 4307 3479 4015 3246 3616 2959 3214 2678 4057 3306AT 114-1324 100 4555 3681 4246 3435 3825 3133 3400 2837 4291 3498



AT 114-0124 30 2542 1958 2167 2704 1677 2094 1713 2290 1339 1782AT 114-0224 40 2737 2123 2343 2910 1829 2270 1869 2472 1473 1944AT 114-0324 25 2843 2309 2503 2991 2052 2436 2086 2615 1747 2150AT 114-0424 50 2931 2288 2518 3111 1980 2438 2020 2652 1614 2096AT 114-0524 30 2968 2416 2617 3122 2150 2550 2185 2731 1834 2252AT 114-0624 40 3071 2450 2675 3242 2148 2600 2189 2805 1781 2266AT 114-0724 40 3220 2631 2841 3385 2347 2769 2384 2965 2007 2456AT 114-0824 50 3264 2619 2852 3440 2305 2772 2345 2987 1922 2424AT 114-0924 50 3390 2773 2993 3563 2480 2918 2520 3123 2124 2594AT 114-1024 60 3453 2782 3025 3636 2457 2943 2501 3167 2057 2583AT 114-1124 60 3586 2937 3169 3769 2632 3090 2671 3305 2260 2747AT 114-1224 75 3851 3158 3405 4048 2831 3321 2874 3550 2440 2955AT 114-1324 100 4073 3342 3602 4281 2998 3513 3043 3755 2591 3129



85

13' 11-1/4"

H

99 3/8

T

142 1/2

23' 8-7/8"

9 72 1/4

P

14 BFW/GROOVED OUTLET

14 BFW/GOOVED INLET

4 FPT OVERFLOW

4 FPT DRAIN

3 MPT MAKE-UP

142 1/2

3/8

2

17 3/8

9

3 5/8

ACCESSDOOR

F

26

7

ACCESSDOOR

Access DoorSwings Inside Unit




AT 114-0124 16510 32360 U 10670 30 180,300 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 114-0224 16660 32510 U 10820 40 197,600 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 114-0324 18570 34420 U 12730 25 163,200 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-0424 17010 32860 U 11170 50 212,300 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 114-0524 18590 34440 U 12750 30 173,400 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-0624 17700 33550 U 11860 40 194,100 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-0724 18740 34590 U 12900 40 190,900 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-0824 18050 33900 U 12210 50 208,500 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-0924 19090 34940 U 13250 50 205,000 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-1024 18220 34070 U 12380 60 220,600 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-1124 19260 35110 U 13420 60 217,100 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 114-1224 19500 35350 U 13660 75 238,000 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"*AT 114-1324 19940 35790 U 14100 100 255,100 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† **

��

F


�� Outlet connection extends 3/8” beyond bottom flange.� L = Lower Section, U = Upper Section† Fan guard does not ship factory mounted.* Model available with gear drive only. Motor and access door located on 13’ 11-1/4” unit end.**Super Low Sound Fan not available on this unit.



†




AT 214-0148 (2) 30 5715 4357 5239 3968 4585 3480 3914 3000 5306 4066AT 214-0248 (2) 40 6136 4709 5637 4300 4947 3797 4241 3295 5711 4409AT 214-0348 (2) 50 6556 5062 6033 4633 5310 4100 4573 3574 6109 4742AT 214-0448 (2) 25 6260 5027 5828 4666 5235 4222 4616 3790 5890 4759AT 214-0548 (2) 30 6533 5255 6083 4884 5466 4424 4831 3973 6148 4981AT 214-0648 (2) 40 6798 5374 6307 4959 5615 4441 4898 3917 6380 5069AT 214-0748 (2) 40 7081 5706 6598 5316 5934 4826 5261 4341 6667 5416AT 214-0848 (2) 50 7453 6011 6945 5602 6251 5100 5544 4591 7018 5708AT 214-0948 (2) 60 7614 6076 7082 5627 6339 5068 5562 4508 7158 5745AT 214-1048 (2) 60 7883 6364 7347 5933 6615 5403 5872 4878 7424 6044AT 214-1148 (2) 75 8464 6836 7890 6379 7105 5813 6313 5261 7972 6497AT 214-1248 (2) 100 8951 7233 8345 6749 7517 6155 6681 5573 8432 6874






87

P

47' 8-1/4"

212 5/8

275 7/8

142 1/2

13' 11-3/8"

3/8

H

99 3/8

T

2

284 7/8 2 1/2

(2) 3 MPT MAKE-UP

(2) 4 FPT OVERFLOW

(2) 4 FPT DRAIN


17 3/8

9 3 5/8

142 1/2

26


7

F

ACCESS DOOR

ACCESS DOOR SWINGS INSIDE

UNIT

142 1/2

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR




AT 214-0148 32780 64480 U 10670 (2) 30 357,000 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 214-0248 33080 64780 U 10820 (2) 40 391,200 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 214-0348 33780 65480 U 11170 (2) 50 420,400 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 214-0448 36900 68600 U 12730 (2) 25 323,100 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-0548 36940 68640 U 12750 (2) 30 343,300 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-0648 35160 66860 U 11860 (2) 40 384,300 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-0748 37240 68940 U 12900 (2) 40 378,000 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-0848 37940 69640 U 13250 (2) 50 405,900 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-0948 36200 67900 U 12380 (2) 60 436,800 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-1048 38280 69980 U 13420 (2) 60 429,900 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 214-1148 38760 70460 U 13660 (2) 75 471,200 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"*AT 214-1248 39640 71340 U 14100 (2) 100 505,100 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† **

��

F


�� Outlet connection extends 3/8” beyond bottom flange.� L = Lower Section, U = Upper Section† Fan guard does not ship factory mounted.* Model available with gear drive only. Motor and access door located on 13’ 11-1/4” unit end.**Super Low Sound Fan not available on this unit.



†










89

H

99 3/8

T

13' 11-3/8"

P

17 3/8

9

3 5/8

71' 7-5/8"

284 7/8 2 1/2

142 1/2 2

142 1/2

212 5/8

275 7/8

ACCESS DOOR


UNIT

(3) 3 MPT MAKE-UP

(3) 4 FPT OVERFLOW

(3) 4 FPT DRAIN



ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

F 7

26

3/8" 72 1/4 9




AT 314-0172 53550 101100 U 10670 (3) 30 530,100 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 314-0272 54000 101550 U 10820 (3) 40 580,900 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 314-0372 55050 102600 U 11170 (3) 50 624,200 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 314-0472 59730 107280 U 12730 (3) 25 479,800 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-0572 59790 107340 U 12750 (3) 30 509,800 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-0672 57120 104670 U 11860 (3) 40 570,700 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-0772 58170 105720 U 12210 (3) 50 613,000 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-0872 60240 107790 U 12900 (3) 40 561,200 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-0972 61290 108840 U 13250 (3) 50 602,700 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-1072 58680 106230 U 12380 (3) 60 648,600 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-1172 61800 109350 U 13420 (3) 60 638,300 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 314-1272 62520 110070 U 13660 (3) 75 685,300 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"

��

F





†










91

28' 3-5/8" 23' 8-3/4" 3/8 167 1/4 5 1/8

161 1/2

162 1/2

138

17 3/8

9

4 1/4

(2) 3 MPT MAKE-UP

(2) 4 FPT OVERFLOW

(2) 4 FPT DRAIN



157 1/4

P

99 3/8

T

H

2 142 3/8

26

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR


UNIT

F

7

ACCESS DOOR



Model Heaviest Motor FlowNo. Shipping Operating Section (HP) (CFM) H T P AT/USS UT†

AT 228-0124 32760 64460 U 10820 (2) 40 389,400 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 228-0224 33460 65160 U 11170 (2) 50 418,200 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 228-0324 36580 68280 U 12730 (2) 25 322,200 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 228-0424 36620 68320 U 12750 (2) 30 342,300 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 228-0524 34840 66540 U 11860 (2) 40 382,400 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 228-0624 35540 67240 U 12210 (2) 50 410,500 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 228-0724 35880 67580 U 12380 (2) 60 434,800 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 228-0824 37960 69660 U 13420 (2) 60 427,800 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 228-0924 38440 70140 U 13660 (2) 75 468,800 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"*AT 228-1024 39320 71020 U 14100 (2) 100 502,600 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† **

��

F


�� Outlet connection extends 3/8” beyond bottom flange.� L = Lower Section, U = Upper Section† Fan guard does not ship factory mounted.* Model Available with gear drive only. Motor and access door located on 28’ 3-5/8” unit end.**Super Low Sound Fan not available on this unit.



†




AT 428-0148 (4) 30 10706 8109 9798 7363 8545 6452 7254 5509 9931 7564AT 428-0248 (4) 40 11526 8796 10565 8007 9249 7029 7899 6068 10701 8207AT 428-0348 (4) 50 12323 9458 11322 8640 9938 7633 8521 6623 11470 8859AT 428-0448 (4) 25 11865 9497 11041 8812 9900 7965 8714 7134 11160 8991AT 428-0548 (4) 30 12386 9939 11529 9226 10355 8345 9126 7488 11652 9409AT 428-0648 (4) 40 12853 10110 11896 9303 10570 8289 9191 7297 12033 9508AT 428-0748 (4) 50 13642 10787 12659 9957 11272 8919 9836 7866 12805 10179AT 428-0848 (4) 40 13430 10809 12510 10061 11244 9117 9951 8189 12643 10260AT 428-0948 (4) 50 14137 11391 13173 10612 11847 9633 10503 8666 13311 10812AT 428-1048 (4) 60 14422 11463 13397 10595 11961 9509 10474 8423 13545 10817AT 428-1148 (4) 60 14954 12062 13936 11242 12544 10236 11125 9215 14082 11454AT 428-1248 (4) 75 16058 12966 14967 12090 13477 11013 11966 9952 15124 12316AT428-1348 (4) 100 16984 13719 15832 12801 14259 11665 12670 10558 15998 13037



AT 428-0148 (4) 30 9289 7073 7877 9901 6012 7612 6159 8333 4702 6440AT 428-0248 (4) 40 10027 7719 8539 10671 6604 8254 6744 9036 5263 7016AT 428-0348 (4) 50 10753 8323 9201 11437 7161 8911 7316 9705 5755 7619AT 428-0448 (4) 25 10579 8549 9278 11133 7591 9032 7718 9705 6451 7954AT 428-0548 (4) 30 11047 8958 9710 11625 7956 9452 8085 10157 6768 8333AT 428-0648 (4) 40 11357 9003 9849 12002 7842 9557 7990 10351 6484 8276AT 428-0748 (4) 50 12090 9633 10526 12772 8432 10232 8593 11037 6989 8905AT 428-0848 (4) 40 11991 9767 10572 12614 8694 10305 8836 11034 7418 9104AT 428-0948 (4) 50 12631 10318 11141 13280 9194 10860 9340 11627 7859 9620AT 428-1048 (4) 60 12820 10271 11183 13512 9030 10870 9189 11721 7510 9495AT 428-1148 (4) 60 13366 10930 11800 14050 9768 11504 9924 12311 8362 10222AT 428-1248 (4) 75 14356 11758 12687 15089 10535 12369 10694 13230 9047 10998AT428-1348 (4) 100 15187 12450 13425 15961 11160 13093 11329 13998 9612 11650



93

28' 3-5/8"

167 1/4 5 1/8

162 1/2 161 1/2 157 1/4

138

4 1/4 9

17 3/8

99 3/8

T

H

51' 1/2"

284 3/4 43

3/8

P

142 3/8 2

(4) 3 MPT MAKE-UP

(4) 4 FPT OVERFLOW

(4) 4 FPT DRAIN

(4) 14 BFW/GOOVED OUTLET


(4) 12 BFW/GOOVED EQUALIZER IN-LINE WITH OUTLETS

ACCESS DOOR

ACCESS DOORSWINGS INSIDE

UNIT

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

ACCESS DOOR

26

F

7



Model Heaviest Motor FlowNo. Shipping Operating Section (HP) (CFM) H T P AT/USS UT†

AT 428-0148 65560 128960 U 10670 (4) 30 685,500 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 428-0248 66160 129560 U 10820 (4) 40 752,000 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 428-0348 67560 130960 U 11170 (4) 50 807,000 16' 3/8" 7' 9" 11' 3-7/8" 1' 5-1/4" 2' 6-3/4"AT 428-0448 73800 137200 U 12730 (4) 25 621,100 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-0548 73880 137280 U 12750 (4) 30 660,100 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-0648 70320 133720 U 11860 (4) 40 739,200 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-0748 71720 135120 U 12210 (4) 50 793,000 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-0848 74480 137880 U 12900 (4) 40 726,500 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-0948 75880 139280 U 13250 (4) 50 780,200 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-1048 72400 135800 U 12380 (4) 60 840,300 17' 3/8" 8' 9" 12' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-1148 76560 139960 U 13420 (4) 60 826,200 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"AT 428-1248 77520 140920 U 13660 (4) 75 904,900 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† 2' 6-3/4"*AT 428-1348 79280 142680 U 14100 (4) 100 970,300 18' 3/8" 9' 9" 13' 3-7/8" 1' 5-1/4"† **

��

F


�� Outlet connection extends 3/8” beyond bottom flange.� L = Lower Section, U = Upper Section† Fan guard does not ship factory mounted.* Model Available with gear drive only. Motor and access door located on 28’ 3-5/8” unit end.**Super Low Sound Fan not available on this unit.

94

SSTTRRUUCCTTUURRAALL SSTTEEEELL SSUUPPPPOORRTT

End Elevation

Models AT & USS 110-118 through 314-1272Two I-Beams Required (By Others)

Plan View

Dimensions

Model No. W L

110-118 to 918 9' 9-3/4" 18' 0"210-124 to 924 9' 9-3/4" 24' 2"210-136 to 936 9' 9-3/4" 36' 2-1/2"310-136 to 936 9' 9-3/4" 36' 4-1/4"310-154 to 954 9' 9-3/4" 54' 5"112-012 to 912 11' 10" 11' 11-3/4"112-314 to 914 11' 10" 13' 11-3/4"112-018 to 918 11' 10" 18' 0"112-520 to 920 11' 10" 20' 0"212-024 to 924 11' 10" 24' 2"212-128 to 928 11' 10" 28' 2"212-036 to 936 11' 10" 36' 2-1/2"312-036 to 936 11' 10" 36' 4-1/4"312-042 to 942 11' 10" 42' 4-1/4"312-054 to 954 11' 10" 54' 5"312-260 to 960 11' 10" 60' 5"

114-0124 to 1324 13' 11-1/4" 23' 9"214-0148 to 1248 13' 11-1/4" 47' 8-1/4"314-0172 to 1272 13' 11-1/4" 71' 7-5/8"

Dimensions

Model No. W L

14-64 to 94 4' 4" 3' 11-3/4"14-66 to 96 4' 4" 5' 11-3/4"14-69 to 99 4' 4" 8' 11-3/4"

14-612 to 912 4' 4" 11' 11-3/4"26-517 to 917 5' 11-7/8" 17' 1-1/2"28-217 to 917 7' 5-7/8" 17' 1-1/2"19-56 to 96 5' 11-7/8" 8' 5-1/2"19-28 to 98 7' 5-7/8" 8' 5-1/2"19-59 to 99 8' 5-1/2" 8' 11-1/2"

19-111 to 911 8' 5-1/2" 10' 5-1/2"19-412 to 912 8' 5-1/2" 11' 11-3/4"19-114 to 914 8' 5-1/2" 13' 11-3/4"29-318 to 918 8' 5-1/2" 18' 0"29-121 to 921 8' 5-1/2" 21' 0"29-024 to 924 8' 5-1/2" 24' 2"29-228 to 928 8' 5-1/2" 28' 2"39-336 to 936 8' 5-1/2" 36' 4-1/4"39-242 to 942 8' 5-1/2" 42' 4-1/4"110-112 to 912 9' 9-3/4" 11' 11-3/4"

Models AT & USS 14-64 through 110-912Two I-Beams Required (By Others)

Notes:

Models AT/UT/USS 14-64 through 314-1272

1. These are suggested arrangements for preliminary layout purposes. Consult your EVAPCO representative for factory certified steel supportdrawings.

2. The recommended support for the AT/UT/USS Cooling Tower is structural I-beams located under the outer flanges and running the entirelength of the unit. The unit should be elevated to allow access underneath the unit and to the roof below. Mounting holes, 3/4” in diam-eter, are located in the bottom flanges of the pan to provide for bolting to the structural steel.

3. Beams should be sized in accordance with accepted structural practices. Maximum deflection of beam under unit to be 1/360 of the unitlength, not to exceed 1/2”.

4. For these models where two support beams are required, deflection may be calculated by using 55% of the operating weight as a uniformload on each beam.

5. Beams should be level before setting the unit in place. Do not level the unit by shimming between it and the I-beams.6. Support beams and Anchor bolts are to be furnished by others.7. Dimensions, weights and data are subject to change without notice. Refer to the factory certified drawings for exact dimensions.8. For alternate layout arrangements please consult the factory. NOTE: OPTIONAL BOTTOM CONNECTIONS WILL REQUIRE THE UNIT TO BE

ELEVATED TO ALLOW FOR PIPING.

Models AT/UT/USS 14-64 to 314-1272Suggested Two I-Beam Arrangement

SSTTRRUUCCTTUURRAALL SSTTEEEELL SSUUPPPPOORRTT

95

End Elevation

Plan View


Three I-Beams Required (By Others)

Models AT/UT/USS 212-59 to 428-1348Suggested Three I-Beam Arrangement

Dimensions

Model No. W L

212-59 to 99 12' 4-7/8" 8' 5-1/2"215-29 to 99 15' 4-7/8" 8' 5-1/2"217-59 to 99 17' 4-1/8" 8' 11-1/2"

217-111 to 911 17' 4-1/8" 10' 5-1/2"217-412 to 912 17' 4-1/8" 11' 11-3/4"217-214 to 914 17' 4-1/8" 13' 11-3/4"220-112 to 912 20' 0-5/8" 11' 11-3/4"220-118 to 918 20' 0-5/8" 18' 0"420-124 to 924 20' 0-5/8" 24' 1-3/4"420-136 to 936 20' 0-5/8" 36' 2-1/2"224-018 to 918 24’ 1-1/8” 18’ 0”224-720 to 920 24' 1-1/8" 20' 0"424-024 to 924 24’ 1-1/8” 24’ 1-3/4”424-028 to 928 24’ 1-1/8” 28’ 1-3/4”424-036 to 936 24’ 1-1/8” 36’ 2-1/4”

228-0124 to 1024 28’ 3-5/8” 23’ 9”428-0148 to 1348 28’ 3-5/8” 51’ 1”

Notes:


1. These are suggested arrangements for preliminary layout purposes. Consult your EVAPCO representative for factory certified steel supportdrawings.

2. The recommended support for the AT/UT/USS Cooling Tower is structural I-beams located under the outer flanges and running the entirelength of the unit. The unit should be elevated to allow access underneath the unit and to the roof below. Mounting holes, 3/4” in diam-eter are located in the bottom flanges of the pan to provide for bolting to the structural steel.

3. Beams should be sized in accordance with accepted structural practices. Maximum deflection of beam under unit to be 1/360 of the unitlength, not to exceed 1/2”.

4. For these models only where three support beams are required, deflection may be calculated using 56% of the operating weight on theCENTER BEAM and 22% on each OUTBOARD beam.

5. Beams should be level before setting the unit in place. Do not level the unit by shimming between it and the I-beams.6. Support beams and Anchor bolts are to be furnished by others.7. Dimensions, weights and data are subject to change without notice. Refer to the factory certified drawings for exact dimensions.8. For alternate layout arrangements please consult the factory. NOTE: OPTIONAL BOTTOM CONNECTIONS WILL REQUIRE THE UNIT TO BE

ELEVATED TO ALLOW FOR PIPING.

DDRRAAIINN DDOOWWNN VVOOLLUUMMEE FFOORR

RREEMMOOTTEE SSUUMMPP AAPPPPLLIICCAATTIIOONNSS

96

The following chart provides the maximum drain down volume allowable per AT & USS model number. Use this chartwhen sizing indoor or outdoor remote sumps tanks. Remote sump applications are commonly used whenever acooling tower is idle during sub-freezing weather to protect the water in the basin from freezing or for large multi-tower industrial applications. Either application allows the circulating water to gravity drain into a remote sump tankindoors or a large, outdoor concrete basin located underneath the cooling tower.

The water volume provided is the cooling tower portion of the remote sump tank only. The tank should allow fordrain down water from external piping and pump suction coverage.

14-64 to 14-94 9014-66 to 14-96 14014-69 to 14-99 220

14-612 to 14-912 27519-56 to 19-96 27919-28 to 19-98 329

26-517 to 26-917 55828-217 to 28-917 658212-59 to 212-99 558215-29 to 215-99 65819-59 to 19-99 381

19-111 to 19-911 44719-412 to 19-912 51419-114 to 19-914 602

217-111 to 217-911 850217-412 to 217-912 975217-214 to 217-914 115029-318 to 29-918 77829-121 to 29-921 91029-024 to 29-924 102829-228 to 29-928 120439-336 to 39-936 154239-242 to 39-942 1806

110-112 to 110-918 1260210-124 to 210-924 1664210-136 to 210-936 2520310-136 to 310-936 2496310-154 to 310-954 3780

ModelMaximum

Drain DownVolume

112-012 to 112-912 832112-314 to 112-914 974112-018 to 112-918 1260112-520 to 112-920 1401212-024 to 212-924 1664212-128 to 212-928 1948212-036 to 212-936 2520312-036 to 312-936 2496312-042 to 312-942 2922312-054 to 312-954 3780312-260 to 312-960 4203220-112 to 220-912 1664220-118 to 220-918 2520420-124 to 420-924 3392420-136 to 420-936 5040224-018 to 224-918 2520424-024 to 424-924 3392424-028 to 424-928 3960424-036 to 424-936 5102

114-0124 to 114-1324 2186214-0148 to 214-1248 4372314-0172 to 314-1272 6558228-0124 to 228-10 24 4372428-0148 to 428-1348 8744

ModelMaximum

Drain DownVolume

97

Notes:

EVAPCO PRODUCTS ARE MANUFACTURED WORLDWIDE.

5M/10-08/DGD

EVAPCO...SPECIALISTS IN HEAT TRANSFERPRODUCTS AND SERVICES.

EVAPCO, Inc. — World Headquarters & Research/Development Center

EVAPCO, Inc.World HeadquartersP.O. Box 1300Westminster, MD 21158 USAPhone: 410-756-2600Fax: 410-756-6450E-mail: [email protected]

EVAPCO Asia/Pacific

EVAPCO Asia/Pacific Headquarters1159 Luoning Rd. Baoshan Industrial ZoneShanghai, P. R. China, Postal Code: 200949Phone: (86) 21-6687-7786Fax: (86) 21-6687-7008E-mail: [email protected]

EVAPCO Europe

EVAPCO Europe, N.V.European HeadquartersIndustrieterrein Oost 40103700 Tongeren, BelgiumPhone: (32) 12-395029Fax: (32) 12-238527E-mail: [email protected]

EVAPCO East5151 Allendale LaneTaneytown, MD 21787 USAPhone: 410-756-2600Fax: 410-756-6450E-mail: [email protected]

EVAPCO Midwest1723 York RoadGreenup, IL 62428 USAPhone: 217-923-3431Fax: 217-923-3300E-mail: [email protected]

EVAPCO West1900 West Almond AvenueMadera, CA 93637 USAPhone: 559-673-2207Fax: 559-673-2378E-mail: [email protected]

EVAPCO Iowa925 Quality DriveLake View, IA 51450 USAPhone: 712-657-3223Fax: 712-657-3226

EVAPCO IowaSales & Engineering1234 Brady BoulevardOwatonna, MN 55060 USAPhone: 507-446-8005Fax: 507-446-8239E-mail: [email protected]

Refrigeration Valves & Systems CorporationA wholly owned subsidiary of EVAPCO, Inc.1520 Crosswind Dr.Bryan, TX 77808 USAPhone: 979-778-0095Fax: 979-778-0030E-mail: [email protected]

McCormack Coil Company, Inc.A wholly owned subsidiary of EVAPCO, Inc.P.O. Box 17276333 S.W. Lakeview BoulevardLake Oswego, OR 97035 USAPhone: 503-639-2137Fax: 503-639-1800E-mail: [email protected]

EvapTech, Inc.A wholly owned subsidiary of EVAPCO, Inc.8331 Nieman RoadLenexa, KS 66214 USAPhone: 913-322-5165Fax: 913-322-5166E-mail: [email protected]

Tower Components, Inc.A wholly owned subsidiary of EVAPCO, Inc.5960 US HWY 64ERamseur, NC 27316Phone: 336-824-2102Fax: 336-824-2190E-mail: [email protected]

EVAPCO Newton701 East Jourdan StreetNewton, IL 62448 USAPhone: 618-783-3433Fax: 618-783-3499E-mail: [email protected]

EVAPCO Europe, S.r.l.Via Ciro Menotti 10I-20017 Passirana di RhoMilan, ItalyPhone: (39) 02-939-9041Fax: (39) 02-935-00840E-mail: [email protected] Europe, S.r.l.Via Dosso 223020 Piateda Sondrio, ItalyEVAPCO Europe, GmbHBovert 22D-40670 Meerbusch, GermanyPhone: (49) 2159-69560Fax: (49) 2159-695611E-mail: [email protected] Coil a/sA subsidiary of EVAPCO, Inc.Knøsgårdvej 115DK-9440 AABYBRO DenmarkPhone: (45) 9824 4999Fax: (45) 9824 4990E-mail: [email protected] S.A. (Pty.) Ltd.A licensed manufacturer of EVAPCO, Inc.18 Quality RoadIsando 1600Republic of South AfricaPhone: (27) 11 392-6630Fax: (27) 11-392-6615E-mail: [email protected] Engineering Industries Co.A licensed manufacturer of EVAPCO, Inc.5 Al Nasr Road St.Nasr City, Cairo, EgyptPhone: (20) 2-290-7483/(20) 2-291-3610Fax: (20) 2-404-4667/ (20) 2-290-0892E-mail: [email protected]

Evapco (Shanghai) Refrigeration Equipment Co., Ltd.1159 Louning Rd., Baoshan Industrial ZoneShanghai, P.R. China, Postal Code: 200949Phone: (86) 21-6687-7786Fax: (86) 21-6687-7008E-mail: [email protected]

Beijing EVAPCO Refrigeration Equipment Co., Ltd.Yan Qi Industrial Development DistrictHuai Rou County Beijing, P.R. China, Postal Code: 101407Phone: (86) 10 6166-7238Fax: (86) 10 6166-7395E-mail: [email protected]

Aqua-Cool Towers (Pty.) Ltd.A licensed manufacturer of EVAPCO, Inc.34-42 Melbourne St.P.O. Box 436Riverstone, N.S.W. Australia 2765Phone: (61) 29 627-3322Fax: (61) 29 627-1715E-mail: [email protected]

EvapTech Asia Pacific Sdn. BhdA wholly owned subsidiary of EvapTech, Inc.IOI Business Park, 2/F Unit 21Persiaran Puchong Jaya SelatanBandar Puchong Jaya,47170 Puchong, Selangor, MalaysiaPhone: (60-3) 8070 7255Fax: (60-3) 8070 5731E-mail: [email protected]

EVAPCO North America

EVAPCO, Inc. • P.O. Box 1300 • Westminster, MD 21158 USAPHONE: 410-756-2600 • FAX: 410-756-6450 • E-MAIL: [email protected]

Visit EVAPCO’s Website at: http://www.evapco.comBulletin 331B

32 to 4475 nominal tons (139 to 19,669kw)

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