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/ Marley Aquatower Cooling Tower /
/ The Aquatower Advantage / Proven Performance. CTI Certified. Plus SPX stands by its PVC Film Fill with Integral Drift Eliminators andresponsibility for reliable thermal performance. We designedLouvers. If you’ve ever had to replace deterioratedit. We rate it. We guarantee it!eliminators or louvers, you’ll appreciate this advantage.Now those components are molded right in the PVC fill Induced-Draft Design. Save on fan power. The fan willoperate in a warm atmosphere even in winter, so you’ll neversheets. Integral honeycomb louvers keep the circulatinghave to work on frozen mechanical equipment.water inside your tower—and off your roof! Select Your Aquatower on Our Website. The Marley Crossflow Design. Save on pump power because you onlypay to move the water to the top of the tower. Gravity doesUPDATE web-based selection software—available atthe rest. The mechanical equipment and water distributionwww.spxcooling.com—provides Aquatower modelsystem are out where you can easily maintain them.recommendations based on your specific designrequirements All-Season Reliability. Aquatowers perform as specified Simple, Flexible Installation. Just mount the motor, beltsin the heat of summer. They respond well to energymanagement techniques in the spring and fall and withand belt guard, install the outlet connection that suits yourappropriate fan controls, they can operate virtually ice-freeneeds—both side suction and bottom outlet are provided,in the dead of winter. Plus they offer simple maintenance allcomplete with screens—and adjust the float valve. Attachyear long.air-inlet screens on models 494A and larger and yourAquatower is ready for operation. Proven Corrosion Protection. Thousands of users overmore than 40 years confirm the value of heavy galvanizing.And Marley’s G-235 is the most effective galvanizing used inthe industry.2
/ The Marley Difference /Above all, the Aquatower is readily available. You won’thave to wait around—or accept second best—when youneed a cooling tower. We maintain an impressive stock ofcompleted towers at our own plants. A growing number of localdistributors can draw from that stock.Contact your local distributor or Marley representative.They’ll be glad to help you choose the proper model for yourneeds. They can also help you with your layout and piping.You’ll enjoy single source responsibility and reliabilitybecause we design and manufacture virtually all major coolingtower components.All Marley components are designed and selected to be apart of an integrated system. For example, the spray patternfrom nozzles and the pressure drop through drift eliminatorsboth affect a fill’s heat transfer capacity. So, we include thatimpact in our thermal analysis.Today’s Aquatower may be the most space/energy-Drift eliminators must be effective at the air velocitiesefficient cooling tower available. Your needs have dictatedwhere fill is most efficient. So, we’ve carefully designed bothconstant technological improvement. Thousands of Aquatowercomponents to work together efficiently.users enjoy the benefits of eight major redesigns and dozensHow many other cooling tower companies can offer youof minor improvements in the past 40 years. For example, PVCthis assurance? They may use Brand “A” nozzles with Brandfilm-fill enables the Aquatower to reject more heat per unit size.“B” fill and Brand “C” drift eliminators. When they all comeWe also put the air inlet louvers and drift eliminators right onthe fill sheets. This new arrangement saves you fan horsepowerby improving airflow through the tower.together, the whole may be less than the sum of the parts.Our total system approach assures that all the parts worktogether to provide you the greatest total performance.The Aquatower is a maintenance delight! You’ll appreciateAnd because we design specifically for cooling towers,the way the Aquatower simplifies maintenance. No hiddenall our components will provide many years of service withspray systems, tiny nozzles, or enclosed basins here! You canminimal maintenance.easily replace and align V-belts from outside the tower.Every Aquatower cooling tower carries a full one-yearYou won’t have the chore and expense that goes with high-warranty. The Aquatower you buy from us will work onhorsepower, blower fan towers.your job or we’ll make it right. Your warranty includes thermalAll primary components of the Aquatower are open to view.performance and every component of the tower. TheYou can easily remove any debris from the upper basin orSPX Cooling Technologies warranty is your assurance ofnozzles while the tower is in operation.performance—for a full year.Heavy mill galvanizing on all steel components preventsThe Aquatower has inspired many imitators. Onlybase metal corrosion. You won’t have to worry about paintSPX Cooling Technologies can offer you the original.chips clogging your strainers and nozzles, because there is nopaint to flake off. Heavy galvanizing also protects much betterthan paint.3
/ Schematic /DLWTOWER CL INLETHVERTICALDISCHARGE(OPTION-NOTE 3)MOTORAINLET PIPING(BY OTHERS)CSCL SIDE OUTLETUSE FORSTATIC LIFTTOWER COLLECTIONBASINBTOWER CL OUTLETECL BOTTOM OUTLETAIR INLET ELEVATIONTowerModelNominal Tonsnote1SIDE ELEVATIONDimensionsLWHABC note 2DESMotorhpPipingConnectionInletOutlet note 64'-4"1 32"2" F4'-4"12"2" F8"6'-5"14"4" M8"6'-5"24"4" M8"6'-5"24"4" M8"6'-5"34"4" M490A82'-11 2"4'-2 8"5'-3 8"1'-3 16"6 8"2'-0"490B102'-111 2"4'-2 7 8"5'-33 8"1'-313 16"67 8"2'-0"492A223'-111 2"5'-0 3 4"7'-41 2"1'-5"91 2"4'-0"492B283'-11 2"5'-0 4"7'-4 2"1'-5"91 2"4'-0"493A365'-111 2"5'-1"7'-41 2"1'-5"91 2"5'-0"493B425'-111 2"5'-1"7'-41 2"1'-5"91 2"5'-0"494A515'-111 2"6'-55 8"9'-0"1'-1115 16"111 2"6'-0"10'-8"91 4"7'-101 2"26"6" MC494B575'-111 2"6'-55 8"9'-0"1'-1115 16"111 2"6'-0"10'-8"91 4"7'-101 2"36"6" MC494C685'-11 2"6'-5 8"9'-0"1'-11 16"111 2"6'-0"10'-8"19 4"7'-101 2"56"6" MC495A807'-111 2"6'-53 4"9'-0"1'-1115 16"111 2"7'-0"10'-8"91 4"7'-101 2"56"6" MC495B917'-111 2"6'-53 4"9'-0"1'-1115 16"111 2"7'-0"10'-8"91 4"7'-101 2"71 26"6" MC496A1119'-111 2"6'-61 8"9'-81 4"1'-113 16"111 2"9'-0"10'-1111 16"91 4"8'-7"56"6" MC496B1269'-111 2"6'-61 8"9'-81 4"1'-113 16"111 2"9'-0"10'-1111 16"91 4"8'-7"71 26"6" MC11173531131571. Nominal tons are based upon 95 F HW, 85 F CW, 78 F WB, and3 GPM/Ton. The Marley UPDATE web-based selection softwareprovides Aquatower model recommendations based on specificdesign requirements.2. Minimum clearance for adequate air supply. Consult your Marley salesrepresentative or your local distributor if this clearance is impracticalfor your job.3. Vertical discharge hood is for applications in restrictive enclosuresor other locations where horizontal discharge is not desirable. CTICertification does not apply when this option is selected. Availableonly on models 494A and larger.note 3note 3note 3note 64. Motors less than 1 hp are 115/230 volt, single-phase TENV. 1 hpthrough 7.5 hp motors are 230/460 volt, 3-phase TEFC. See page 10for optional motor sizes on Models 490B through 492A.5. Motor, belt and belt guard ship uninstalled. Installation by others.6. Outlet sizes shown are side outlets. All models except 490A and 490Bhave connections for both side and bottom outlet. Install the desiredconnection and seal the unused opening with the coverplate provided.Pump suction should use side outlet. See page 9 for size and flowcapacities of bottom outlets.7. Overflow is a 2" F connecton located in side of collection basin.8. Drain is a 2" F connection located in collection basin floor.9. Makeup valve connection is 3/4" M located in tower side.4
/ Support /1"LFCL ANCHORHANCHOR CLBOLT1"HANCHOR CLBOLTW G5/8" DIAMETER HOLESBBOLTBOLTAIR INLET FACEAIR INLET FACEHSUPPORTING STEEL PLANTOWERCOLLECTIONBASINSUPPORTING STEEL PLANOPTION ONETOWERCOLLECTIONBASIN1"OPTION TWOMIN. BEARING WIDTHAT EACH ANCHOR BOLT2"NORMALGAUGENORMALGAUGESUPPORT(BY OTHERS)SUPPORT(BY OTHERS)SECTION ATowerModel1"TOWERCOLLECTION BASINCL ANCHORCL ANCHORTOWERCOLLECTION BASINHANCHOR CLBOLTBOLTGA W5/8" DIAMETER HOLESLFCL ANCHORANCHOR CLBOLTBOLT1"VIEW BDimensionsShipping WeightHlbMaximumOperatinglbMaximunOperating Loadat AnchorWind Load lbMax. VerticalMax. HorizontalReaction at Anchor Reaction at AnchorLWFG490A-490B2'-111 2"3'-41 8"2'-91 2"3'-0"21 16"437756185180115492A-492B3'-111 2"4'-15 8"3'-91 2"3'-6"313 16"7421396349355210493A-493B5'-111 2"4'-15 8"5'-91 2"3'-6"313 16"9821995499525285494A-49B5'-111 2"5'-61 8"5'-91 2"5'-0"31 16"13982948737555355lb495A-495B7'-111 2"5'-61 8"7'-91 2"5'-0"31 16"17583853963745470496A-496B9'-111 2"5'-61 8"9'-91 2"5'-0"31 16"2096475111881095640494A-494C5'-111 2"5'-61 8"5'-91 2"5'-0"31 16"17983348837700515495A-495B7'-111 2"5'-61 8"7'-91 2"5'-0"31 16"213342331058745515496A-496B9'-111 2"5'-61 8"9'-91 2"5'-0"31 16"2596525113131095640Models with Vertical Discharge Hood Option1. Use this bulletin for preliminary layouts only. Obtain current drawingsfrom your Marley sales representative or your local distributor.2. Purchaser to provide tower supports complete with holes and bolts foranchorage. All supports must be framed flush and level at top. Maximum deflection to be 1/360th of span, not to exceed 1/2" (13mm).3. Maximum weight occurs with basin full to overflow level at shutdown.Actual operating weight varies with GPM and piping scheme.4. Wind loads are based on 30 psf and are additive to operating loads.Reactions due to wind loads exceed those resulting from seismic loadsbased on the 1997 UBC code, Zone 4 and an Importance Factor of1.00 per Section 1634—Towers Not on a Building.5Use this data for preliminary layouts only.Obtain current drawing from your Marley salesrepresentative.The Marley UPDATE web-based selection software—available at spxcooling.com providesAquatower model recommendations based oncustomer's specific design requirements.
/ Construction And Components / Water Distribution System Fill/Louvers/Drift EliminatorsWarm water flows through external piping (not includedFill sheets include integral louvers and drift eliminators,with the tower) into a splash box chamber at the top of thedesigned to minimize resistance to airflow. This patentedAquatower. A splash box prevents the incoming water fromarrangement prevents water from escaping the fill sheets,spilling out of the basin and helps provide uniform waterassuring proper heat transfer throughout wide variations indistribution. Water then flows by gravity from the basin throughairflow. Users find this fill operates ice-free even in extremelynozzles to the fill.cold weather.The thermoformed 15 mil (.015″) thick PVC fill sheetswithstand hot water temperatures as high as 125 F. Fill sheetsare immune to biological and corrosive decay and their flamespread rating is less than 25 per ASTM E-84. Galvanizedstructural tubes support and stabilize the fill. They also holdthe bottom of the fill sheets above the cold water basin floor tosimplify basin cleaning. Removable 1″ x 1″ mesh galvanizedair inlet screens keep larger airborne trash out of the collectionbasin and fill area.Eliminator air-seal removed showing distribution area above fillHot water distribution basin covers are provided asstandard equipment to keep the distribution basin free fromairborne debris and to reduce the likelihood of biologicalgrowth.All Aquatowers use Marley “Spiral Target” nozzles. Theseinert polypropylene nozzles are evenly spaced thoughout theMX Filldistribution basin to assure uniform water distribution overall portions of the fill. Their large openings resist clogging.Nozzles are easy to remove and replace if you ever want tochange the design water flow rate. Cold Water Collection BasinThe Aquatower’s collection basin reduces operatingweight, simplifies basin cleaning, and assures proper outflow.Water flows from the elevated area under the fill into the basin’srear depressed section, where side suction piping connects. Abottom outlet is also available for gravity flow applications.Standard equipment on each tower basin includes: ascreened suction connection; a threaded overflow connection;a threaded and plugged drain connection; and a float-operatedmake-up valve. Models 492A through 496B also include abottom outlet conforming to 125# flange specification. A blankcover plate is provided to seal the outlet connection not used.Spiral-target distribution nozzle6
/ Construction And Components / Mechanical EquipmentBelt-driven propeller fans insure design airflow at minimumhorsepower. Fans are supported by an oil-lubricated taperedroller bearing assembly with remote oil reservoir.For ease of maintenance all drive components areaccessible from outside the tower.Fan drive motor showing adjustable base and belt guard Hoisting and HandlingHoisting instructions on each tower explains how to usea spreader-bar and slings beneath the cold water basin floorto hoist the Aquatower. The tower’s design also allows easyhandling with a forklift. SafetyStandard Aquatower safety features include fan guards andbelt guards. Fan guards consist of welded heavy gauge steelwire hoops and spokes, hot dip galvanized after fabrication.Fan and fan guard. Guard is easily removed for access tofan and drive beltsThe galvanized steel belt guard encloses both belts andpulleys. Guards are easily removed for servicing.Fan drive motors are TEFC (may be TENV on model 490A)designed specifically for cooling tower use. Horsepowers andelectrical characteristics appear in the table on page 4. Other Construction and Finishtypes of motors are available. Typical options appear underOptional Accessories on page 10.Aquatowers offer the corrosion protection of G-235galvanized—providing a zinc thickness of 2.35 oz/ft per ASTM2A-653—providing long term protection for the steel. AssemblyCautionhardware is also galvanized.The cooling tower must be located at such distance anddirection to avoid the possibility of contaminated towerdischarge air being drawn into building fresh air intakeducts. The purchaser should obtain the services of aLicensed Professional Engineer or Registered Architectto certify that the location of the tower is in compliancewith applicable air pollution, fire, and clean air codes.7
/ Freeze Prevention /When the ambient air temperature falls below 32 F, the Indoor Tank Methodwater in a cooling tower can freeze. Marley Technical Report#H-003 “Operating Cooling Towers in Freezing Weather”In this type of system, water flows from an indoor tank,describes how to prevent freezing during operation. Ask yourthrough the load system, and back to the tower, where it isMarley sales representative for a copy or download from ourcooled. The cooled water flows by gravity from the tower towebsite.the tank located in a heated space. At shutdown, all exposedWater collects in the cold water basin during shutdowns,water drains into the tank, where it is safe from freezing.and may freeze solid. You can prevent freezing by adding heatThe table on page 9 lists typical drain-down capacitiesto the water left in the tower. Or, you can drain the tower and allfor all Aquatower models. Although we do not produce tanks,exposed piping at shutdown.many of our representatives offer tanks supplied by reputablemanufacturers. Electric Basin HeatersChoose from two types of automatic basin heater systems,based on your site conditions and preferences.You may choose a heater system consisting of thesecomponents (shipped separately for installation by others): Stainless steel electric immersion heater element(s). Thread-The amount of water needed to successfully operate thesystem depends on the tower size, GPM and the volume ofwater contained in the piping system to and from the tower. Youmust select a tank large enough to contain those combinedvolumes—plus a level sufficient to maintain a flooded suctionon your pump. Control makeup water according to the levelwhere the tank stabilizes during operation.You should always use a bottom outlet for this type ofed couplings are provided for installation. NEMA 4 enclosure containing these components:–Magnetic contactor to energize heater.–Transformer to convert power supply to 24 volts forcontrol circuit.– Solid state circuit board for heater control and low-watercutoff.Enclosure may be mounted on the side of the tower. Control probe to monitor water temperature and water level.Threaded couplings are provided for installation.piping system. The following table lists the flow capacities forbottom outlets.Basin Heater SelectionOr you may prefer a pre-assembled submersible tank-typeheater which requires no tower modification and can plug intoa standard grounded 3-prong 120V outlet.The Incoloy heater element was chosen for its long life inTowerModel 10 F Ambient-10 F AmbientTank HeaterComponentHeaterTank HeaterComponentHeater490A1.5 kW3 kW1.5 kW3 kW490B1.5 kW3 kW1.5 kW3 kW492A1.5 kW3 kW1.5 kW3 kW492B1.5 kW3 kW1.5 kW3 kW493A1.5 kW3 kW2 @ 1.5 kW3 kW493B1.5 kW3 kW2 @ 1.5 kW3 kW494A2 @ 1.5 kW3 kW2 @ 1.5 kW3 kWsubmerged environments. A built-in thermostat senses water494B2 @ 1.5 kW3 kW2 @ 1.5 kW3 kWtemperature and controls the supply of electricity to maintain494C2 @ 1.5 kW3 kW2 @ 1.5 kW3 kWproper water temperature. A built-in safety switch cuts off495A2 @ 1.5 kW3 kW3 @ 1.5 kW4.5 kWpower whenever the element is exposed to air. The element495B2 @ 1.5 kW3 kW3 @ 1.5 kW4.5 kW496A3 @ 1.5 kW4.5 kW4 @ 1.5 kW6 kW496B3 @ 1.5 kW4.5 kW4 @ 1.5 kW6 kWmounts in the tower basin on a stainless steel plate.Any exposed piping that is still filled with water at shutdown—including the makeup water line—should be electrically1. Required kw is the amount of heat needed to maintain 40 Fbasin water temperature at the indicated ambient air temperature.2. Tank heaters shown are 120 volts, single-phase.3. Component heaters shown are 480 volts, three-phase.Options or special heater selections may add several weeks todelivery.4. Heaters do not operate continuously. Heaters cycle on and offautomatically as basin water temperature dictates.5. Contact your Marley sales representative for selectionsappropriate for other ambient conditions than those shown here.traced and insulated (by others).8
/ Field Assembly / Field AssemblyDrain-Down CapacityTower ModelRange of Tower Design GPMMaximum Drain-Downgallons15 - 262827 - 513052 - 853386 - 1533621 - 5349largest Aquatower components for each model. You can usethis information to plan your rigging and transportation 496A496BIf you choose to assemble your Aquatower at the job site,your Aquatower will be shipped unassembled with completeassembly instructions.The following table shows the sizes and weights of the54 - 925493 - 15160152 - 21165Unassembled tower shipment may add 3 to 5 weeks to33 - 8377normal lead times. Your Marley sales representative will be84 - 14484glad to help you plan for your unique needs.145 - 23894239 - 32810160 - 141134142 - 227145228 - 376162377 - 56317882 - 192182193 - 270192271 - 513219514 - 763241104 - 196228197 - 286243287 - 497271498 - 963320Component Sizes and WeightsTower Model490A490B492A492BVolumes shown are maximums for the GPM ranges indicated.Actual volumes will usually be less. Contact your local Marley salesrepresentative for more specific information.493A493BBottom Outlet Maximum GPMOutlet DiameterTowerModel4"6"8"10"492A - 492B120225225na493A - 493B120270350494a - 494B - 494C140310495A - 495B140496A - 496B140ComponentSize inchesWeight lbCollection Basin End12 x 13 x 3615Collection Basin Floor3 x 30 x 3223Front Panel2 x 36 x 4421Casing Panel2 x 40 x 5243Distribution Basin8 x 16 x 3218Collection Basin End14 x 16 x 4824Collection Basin Floor3 x 36 x 4437Front Panel2 x 48 x 6852Casing Panel2 x 26 x 6334Distribution Basin8 x 16 x 4424Collection Basin End14 x 16 x 7237Collection Basin Floor3 x 36 x 6856Front Panel2 x 37 x 7235Casing2 x 26 x 633437Distribution8 x 16 x 68Collection Basin End18 x 18 x 7247Collection Basin Floor4 x 34 x 6856Front Panel2
The Aquatower you buy from us will work on your job or we’ll make it right. Your warranty includes thermal performance and every component of the tower. The SPX Cooling Technologies warranty is your assurance of performance—for a full year. The Aquatower has inspired many imitators. Only SPX Cooling Technologies can offer you the original.File Size: 1MBPage Count: 12Discover on this pageWhere does warm water flow in an aquatower?Where does water flow from a load system?Does galvanizing prevent corrosion?
