eBroc-VXT Open Type Cooling Tower

VXT - B 1

VXT
Open Cooling Towers
Open C

ooling Towers

Product DetailVXT Open Cooling Tower ........................................................................ B2

Benefits ....................................................................................................... B4

Construction Details .................................................................................. B6

Custom Features and Options .................................................................. B8

Accessories ............................................................................................... B10

Engineering Data ..................................................................................... B12

Structural Support .................................................................................. B19

Engineering Specifications ..................................................................... B22

VXT - B 2

VX

T
VXT Open Cooling TowerCapacitySingle Cell Capacity:
From 1,6 l/s to 1230 l/s

General DescriptionOpen Circuit Cooling Towers with centrifugal fans, deliver fully rated thermal performance over a wide range of flow and temperature requirements. This type of cooling towers can be installed indoors and can accommodate limited ceiling or enclosure heights. Cooling towers with centrifugal fans minimise sound levels and installation costs, provide year round operating reliability, and simplify maintenance requirements.

Cooling Towers provide an answer to the growing need to save water and energy and help protect the environment by providing the highest system efficiency.

Key FeaturesSuitable for indoor and outdoor installations

Suitable for high temperature applications

Low sound

Single side air inlet

Low energy consumption

Low installed cost

Easy maintenance

Reliable year-round operation

Long service life

Baltimore Aircoil

VXT - B 3

Open C

ooling Towers

... because temperature matters

VXT - B 4

VX

T
BenefitsInstallation and Application Flexibility
Indoor Installations – Centrifugal fans can overcome the static pressure imposed by external ductwork, allowing this type of cooling towers to be installed indoors.High Temperature Applications – A range of wet deck and construction options are available to accommodate entering water temperatures of up to 65°C.

Low SoundCentrifugal Fan - Centrifugal fans have inherently low sound characteristics.

Single Side Air Inlet - Particularly sound-sensitive areas can be accommodated by facing the quiet side (back panel) to the sound-sensitive direction.

Low Energy ConsumptionEvaporative Cooling Equipment minimizes the energy consumption of the entire system because it provides lower operating temperatures. The owner saves money while conserving natural resources and reducing environmental impact.

Low Installed CostSupport – All models mount directly on two parallel I-beams (supplied by others) and ship complete with motors and drives, factory-installed and aligned.Modular Design – Large models ship in multiple sections to minimize the size and weight of the heaviest lift, allowing for the use of smaller, less costly cranes.

Easy MaintenanceInternal Access - The interior of the unit is easily accessible for adjusting the float valve, cleaning the strainer or flushing the basin.

Reliable Year-Round OperationV-Belt Drive – The fans, motor, and drive system are located outside of the moist discharge airstream, protecting them from moisture, condensation and icing hence allowing a safe year-round operation.

The water level control is easily reached from the access door.

External V-belt drive system (shown here with panel removed)

Baltimore Aircoil

VXT - B 5

Open C

ooling Towers

Long Service LifeMaterials of Construction – Various materials are available to meet the corrosion resistance, unit operating life, and budgetary requirements of any project.

Note: For more information, please refer to the section “Technical Resources, Materials of Construction”.

Low Ocean Freight CostSize - C models are designed to fit in standard closed box containers to minimize ocean freight costs. All containerized models are shipped in a bottom fan section and a top coil section, which fit together into a 40' box container, no crating required.In order to fit the bottom fan section through the doors of the container, the fan enclosures are shipped loose inside the water basin area and are easily mounted on site.

C Model in Dry Van Container Fan Enclosures are shipped loose


VXT - B 6

VX

T
Construction Details
Upper Section

Lower Section

Baltimore Aircoil

VXT - B 7

Open C

ooling Towers

1. Heavy Duty ConstructionZ600 hot-dip galvanized steel panels

2. Fan Drive SystemV-belt drive

Heavy-duty bearings and fan motor

3. Centrifugal Fan(s)Quiet Operation

4. Water Distribution SystemPlastic spray header and branches

Large orifice, non-clog nozzles

Grommetted for easy maintenance

5. BACount Wet Deck SurfacePlastic material

Impervious to rot, decay and biological attack

Self extinguishing

High temperature wet deck option

6. StrainerAnti-vortex design to prevent air entrainment

7. Access DoorCircular access door

8. Drift EliminatorsUV resistant non-corrosive material, impervious to rot, decay and biological attack

Three distinct changes in air direction to reduce drift loss significantly

Assembled in easy to handle sections, which can be removed for access to the equipment interior


VXT - B 8

VX

T
Custom Features and OptionsConstruction Options
Standard Construction:Steel panels and structural elements are constructed of Z600 heavy-gauge hot-dip galvanized steel protected with the Baltiplus Corrosion Protection on the outside of the unit.

Optional BALTIBOND® Corrosion Protection System:The BALTIBOND®

Corrosion Protection System, a hybrid polymer coating used to extend equipment life, is applied before assembly to all hot-dip galvanized steel components of the unit.

Optional Stainless Steel Construction:Steel panels and structural elements are constructed of stainless steel either type 304 or 316.

Optional Water-Contact Stainless Steel Cold Water Basin:A cost-effective alternative to an all stainless steel unit. The critical components in the cold water basin and the cold water basin itself are provided in stainless steel. The remaining components are protected with the BALTIBOND®

Corrosion Protection System.

Note: See section Technical Resources, Material of Construction for more details on the materials described above.

Fan Drive SystemThe fan drive system provides the cooling air necessary to reject heat from the system to the atmosphere. Centrifugal fans, forwardly curved, are driven by matched V-belts with taper lock sheaves.

The Baltiguard® Drive SystemThe BALTIGUARD® Drive System consists of two standard single-speed fan motors and drive assemblies. One drive assembly is sized for full speed and load, and the other is sized for approximately 2/3 speed and consumes only 1/3 of the design kilowatt power. This configuration allows the system to be operated like a two-speed motor, but with the reserve capacity of a standby motor in the event of failure. As a minimum, approximately 70% capacity will be available from the low kilowatt motor, even on a design wet-bulb day. Controls and wiring are the same, as those required for a two-speed, two-winding motor. Significant energy savings are achieved when operating at low speed during periods of reduced load and/or low wet-bulb temperatures.

Unit with Stainless Steel Option

Baltiguard® Drive System

Baltimore Aircoil

VXT - B 9

Open C

ooling Towers

Low Sound OperationThe low sound levels generated by BAC Products with centrifugal fans make them suitable for most installations. For situations when one direction is particularly sound sensitive, the unit can be oriented so that the side opposite the air inlet faces the sound-sensitive direction. Units with centrifugal fans are also available with factory designed, tested and rated sound attenuation for both the air inlet and discharge.

Note: For more information, please refer to the section “TechnicalResources, Sound Reduction Options”.

Remote Sump ExecutionThe use of an auxiliary sump within a heated space is the most satisfactory way to protect sump water from freezing. When the circulating pump is shut off, all the water in the water distribution, in suspension and in the sump will drain freely to the auxiliary sump.

Note: For detailed information on the calculation of the remote sump tank, please refer to the section "Technical Resources, Selection ofRemote Sump Tank".

High Temperature Wet DeckIf operation above 55°C is anticipated, an optional high temperature wet deck material is available which increases the maximum allowable entering water temperature to 65°C.

Units with Intake and Discharge Sound Attenuation


VXT - B 10

VX

T
AccessoriesLadder, Safety Cage and HandrailsIn the event the owner requires easy access to the top of the unit, the unit can be furnished with ladders extending from the base of the unit to the top, as well as safety cages, and handrail packages.
Note: When these access options are employed, the unit must beequipped with steel drift eliminators.

Basin HeatersUnits exposed to below freezing ambient temperatures require protection to prevent freezing of the water in the cold water basin when the unit is idle. Factory-installed heaters, which maintain the water temperature at 4°C, are a simple and inexpensive way of providing such protection. The heater package includes the heaters, a thermostat and a low level cut out switch to protect the heaters if the water level is too low. Standard electric heaters are selected for -18°C ambient temperature.

Model No.VXT

Heater -18 °C(kW)

VXT 10-25 1 x 1,5

VXT 30-55 1 x 1,5

VXT 65-85 1 x 2,5

VXT 95-135 1 x 3

VXT 150-185 1 x 4

VXT N215-N265 1 x 6

VXT N310-N395 2 x 4

VXT N430-N535 2 x 6

VXT C215-C265 1 x 6

VXT C310-C395 2 x 4

VXT C430-C535 2 x 6

VXT S220-S320 1 x 6

VXT S345-S470 2 x 4

VXT S530-S640 2 x 6

VXT S690-S940 4 x 4

VXT 315-400 1 x 6

VXT 470-600 2 x 5

VXT 630-800 2 x 6

VXT 870-1200 4 x 5

Ladder and Safety Cage, Handrails around top of unit

Baltimore Aircoil

VXT - B 11

Open C

ooling Towers

Electric Water Level Control PackageThe electric water level control replaces the standard mechanical make-up valve when a more precise water level control is required. This package consists of a float switch mounted in the basin and a solenoid activated valve in the make-up water line. The valve is slow closing to minimize water hammer.

Extended Lubrication LinesExtended lubrication lines with grease fittings are available for lubrication of the fan shaft bearings.

Capacity Control DampersModulating capacity control dampers are available to provide better leaving water temperature control than can be obtained from fan cycling alone. Fan discharge dampers consist of a single airfoil type damper blade located in the discharge of each fan housing. A standard electrical control package for dampers is available from BAC.

Solid Bottom PanelsFactory-installed bottom panels are required when intake air is ducted to the unit.

Discharge HoodsDischarge hoods reduce the risk of re-circulation in tight enclosures by increasing discharge air velocity, and can be used to elevate the unit discharge above adjacent walls to comply with layout guidelines.

Basin Sweeper PipingBasin sweeper piping provides an effective method of preventing sediment from collecting in the cold water basin of the unit. A complete piping system, including nozzles, is provided in the unit basin for connection to side stream filtration equipment.

Note: For more information, please refer to the section "TechnicalResources, Filtration".

Electric Water Level Control Package

Extended Lubrication Lines

Basin Sweeper Piping


VXT - B 12

VX

T
Engineering DataREMARK: Do not use for construction. Refer to factory certified dimensions & weights. This brochure includes datacurrent at time of publication, which should be reconfirmed at the time of purchase. In the interest of productimprovement, specifications, weights and dimensions are subject to change without notice. Up-to-date engineeringdata and more can be found at www.BaltimoreAircoil.com.
VXT 10 - 185

On models VXT-10 to VXT-135 sufficient space must be provided on the back of the unit for entry to access doors located on side opposite air entry side.

* Units ship in one piece, ** Casing is heaviest section

ModelVXT

Operating Weight

(kg)

Shipping Weight

(kg)

HeaviestSection

(kg)H

(mm)L

(mm)W

(mm)Air Flow

(m3/s)Fan Motor

(kW)Fluid InletND (mm)

Fluid OutletND (mm)

Make UpND (mm)

VXT 010VXT 015VXT 020VXT 025

405410425435

325330350360

325*330*350*360*

2036203620362036

914914914914

1207120712071207

1,791,942,192,50

(1x) 0,75(1x) 1,1(1x) 1,5(1x) 2,2

(1x) 80(1x) 80(1x) 80(1x) 80

(1x) 80(1x) 80(1x) 80(1x) 80

25252525


655685695780

490520530615

490*520*530*440

2036203620362506

1829182918291829

1207120712071207

3,744,484,975,16

(1x) 1,5(1x) 2,2(1x) 4,0(1x) 5,5

(1x) 80(1x) 80(1x) 80(1x) 80

(1x) 80(1x) 80(1x) 80(1x) 80

25252525


1050107511351140

715740805810

715*740*540540

2036222025062506

2737273727372737

1207120712071207

7,228,128,028,83

(1x) 5,5(1x) 5,5(1x) 5,5(1x) 7,5

(1x) 100(1x) 100(1x) 100(1x) 100

(1x) 100(1x) 100(1x) 100(1x) 100

25252525


1255144514751665

890108011101300

890*575605700

2036267526753350

3658365836583658

1207120712071207

11,0410,9012,5812,46

(1x) 7,5(1x) 7,5(1x) 11(1x) 11

(1x) 100(1x) 100(1x) 100(1x) 100

(1x) 100(1x) 100(1x) 100(1x) 100

25252525

VXT 150VXT 165VXT 185

221523602565

159017401940

915915

980**

312835854042

364536453645

143814381438

15,7915,5316,94

(1x) 15(1x) 15

(1x) 18,5

(1x) 150(1x) 150(1x) 150

(1x) 150(1x) 150(1x) 150

252525

1. Drain ND 50; 2. Water Outlet; 3. Overflow ND50 (Overflow VXT 150 – 185: ND80); 4. Make Up ND25; 5.Water Inlet; 6.Access Door.

Baltimore Aircoil

VXT - B 13

Open C

ooling Towers

VXT N215 - N535

ModelVXT

Operating Weight

(kg)

Shipping Weight

(kg)

Heaviest Section

(kg)H

(mm)L

(mm)W

(mm)Air Flow

(m3/s)Fan Motor


Fluid OutletND (mm)

Make UpND (mm)

VXT N215VXT N240VXT N265

364038504080

210023102540

139513951435

311235694026

355035503550

239723972397

23,4923,3324,26

(1x) 22(1x) 22(1x) 30

(1x) 150(1x) 150(1x) 150

(1x) 200(1x) 200(1x) 200

505050

VXT N310VXT N345VXT N370VXT N395

5300558058605890

3060334036203650

1875187518751895

3112356940264026

5385538553855385

2397239723972397

34,1233,8233,6036,15

(1x) 30(1x) 30(1x) 30(1x) 37

(1x) 200(1x) 200(1x) 200(1x) 200

(1x) 200(1x) 200(1x) 200(1x) 200

50505050

VXT N430VXT N480VXT N510VXT N535

7330773081108200

4190459049805060

2758275827582839

3112356940264026

7226722672267226

2397239723972397

46,9846,6546,4448,94

(2x) 22(2x) 22(2x) 22(2x) 30

(2x) 150(2x) 150(2x) 150(2x) 150

(1x) 250(1x) 250(1x) 250(1x) 250

50505050

1. Drain ND 50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50; 5.Water Inlet; 6.Access Door.


VXT - B 14

VX

T
VXT C215 - C535
ModelVXT-C

OperatingWeight

(kg)

ShippingWeight

(kg)

HeaviestSection

(kg)H

(mm)L

(mm)W

(mm)Air Flow

(m3/s)Fan Motor


Fluid OutletND (mm)

Make UpND (mm)

VXT C215VXT C240VXT C265

403542254420

233525352750

162016201645

311235694026

355035503550

224522452245

23,4923,3324,26

(1x) 22(1x) 22(1x) 30

(1x) 150(1x) 150(1x) 150

(1x) 200(1x) 200(1x) 200

505050

VXT C310VXT C345VXT C370VXT C395

5960623064906615

3435372540104090

2260226022602345

3112356940264026

5385538553855385

2245224522452245

34,1233,8233,6036,15

(1x) 30(1x) 30(1x) 30(1x) 37

(1x) 200(1x) 200(1x) 200(1x) 200

(1x) 200(1x) 200(1x) 200(1x) 200

50505050

VXT C430VXT C480VXT C510VXT C535

8120852089008980

4650505054805560

1620162016201645

3112356940264026

7226722672267226

2245224522452245

46,9846,6546,4448,94

(2x) 22(2x) 22(2x) 22(2x) 30

(2x) 150(2x) 150(2x) 150(2x) 150

(1x) 250(1x) 250(1x) 250(1x) 250

50505050

1. Drain ND 50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50; 5. Water Inlet; 6. Access Door

Baltimore Aircoil

VXT - B 15

Open C

ooling Towers

VXT S220 - S940

ModelVXT-S

OperatingWeight

(kg)

ShippingWeight

(kg)

HeaviestSection

(kg)H

(mm)L

(mm)W

(mm)Air Flow

(m3/s)Fan Motor


Fluid OutletND (mm)

Make UpND (mm)

VXT S220VXT S240VXT S265VXT S300VXT S320

41204140417044004760

23802400243026603020

14501470150015001540

34793479347940124437

35503550355035503550

23972397239723972397

24,826,329,229,029,1

(1x) 18,5(1x) 22(1x) 30(1x) 30(1x) 37

(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200

(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200

5050505050


60306070643068806930

33803420377042204270

20502090209021302140

34793479401244374437

53855385538553855385

23972397239723972397

38,241,040,640,443,2

(1x) 30(1x) 37(1x) 37(1x) 37(1x) 45

(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200

(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200

5050505050

VXT S530VXT S600VXT S640

839088609570

485053106030

299029903070

347940124437

722672267226

239723972397

58,458,058,2

(2x) 30(2x) 30(2x) 37

(2x) 200(2x) 200(2x) 200

(1x) 250(1x) 250(1x) 250

505050


1211012190129101381013910

67506830753084308530

40904170417042604270

34793479401244374437

1090310903109031090310903

23972397239723972397

76,482,081,280,886,4

(2x) 30(2x) 37(2x) 37(2x) 37(2x) 45

(2x) 200(2x) 200(2x) 200(2x) 200(2x) 200

(2x) 200(2x) 200(2x) 200(2x) 200(2x) 200

5050505050

1. Drain ND 50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50; 5. Water Inlet; 6. Access Door


VXT - B 16

VX

T
VXT 315 - 1200
General Notes1. All connections 100 mm and smaller are MPT. Connections 150

mm and larger are bevelled-for-welding.

2. Fan kW is at 0 Pa ESP. To operate against external static pressureup to 125 Pa, increase each fan motor one size.

3. The drawings show the standard “right hand” arrangement, whichhas the air inlet side on the right when facing the connection end.“Left hand” arrangement can be furnished by special order.

4. Water outlet, overflow and make-up are always located on thesame end of the unit. For units with two water outlet connectionsan additional overflow connection will be installed on the other endof the unit.

ModelVXT

Operating Weight

(kg)

ShippingWeight

(kg)

HeaviestSection

(kg)H

(mm)L

(mm)W

(mm)Air Flow(m3/s)

Fan Motor(kW)

Fluid InletND (mm)

Fluid OutletND (mm)

Make UpND (mm)


4905519555055535

2960326035603590

1945194519451970

4030448749444944

3550355035503550

3000300030003000

34,5534,3134,1036,62

(1x) 30(1x) 30(1x) 30(1x) 37

(1x) 200(1x) 200(1x) 200(1x) 200

(1x) 200(1x) 200(1x) 200(1x) 200

50505050


7305775082458325

4360481052905370

2770277027702845

4030448749444944

5388538853885388

3000300030003000

51,8251,4450,9254,93

(2x) 22(2x) 22(2x) 22(2x) 30

(1x) 250(1x) 250(1x) 250(1x) 250

(1x) 250(1x) 250(1x) 250(1x) 250

50505050


9805103851100511055

5900649071107160

3885388538853925

4030448749444944

7226722672267226

3000300030003000

69,0968,6268,2073,25

(2x) 30(2x) 30(2x) 30(2x) 37

(2x) 200(2x) 200(2x) 200(2x) 200

(1x) 300(1x) 300(1x) 300(1x) 300

50505050

VXT 870VXT 945VXT 1050VXT 1125VXT 1200

1457014680155601649016570

8720883097101064010720

56705785578557855855

40304030448749444944

1090310903109031090310903

30003000300030003000

94,37103,64102,93102,30109,87

(3x) 22(3x) 30(3x) 30(3x) 30(3x) 37

(3x) 200(3x) 200(3x) 200(3x) 200(3x) 200

(2x) 250(2x) 250(2x) 250(2x) 250(2x) 250

8080808080

1. Drain ND50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50 and 870 - 1200: ND80; 5.Water Inlet; 6.Access Door.

Baltimore Aircoil

VXT - B 17

Open C

ooling Towers

Sound Attenuation

XA + XB Sound Attenuation for VX-Line Cooling Towers

XC Sound Attenuation for VX-Line Cooling Towers

1. Access Door; L1= Intake Attenuator Length; L2= Discharge Attenuator Length; W & H= unit dimensions (see Engineering Data).

1. Access Door; L1= Intake Attenuator Length; L2= Discharge Attenuator Length; W & H= unit dimensions (see Engineering Data)


VXT - B 18

VX

T

(1) VXT-55 + attenuation is shipped in 4 pieces

(1) VXT-75 and VXT 85 + attenuation is shipped in 4 pieces

(2) VXT-95 + attenuation is shipped in 3 pieces

(3) Intake Attenuator: Access opening is 775 mm high, 406 mm wide and is located at each end of the unit.

(3) Discharge Attenuator : Access opening is 400 mm high, 1080 mm wide and is located at blank off side of the unit (Access door of VXT 10-25 has 650 mm width)

Model No.VXT

Unit + Atten. # pieces

shipped

# Access doors (3)

XA, XB, XC

Dimensions(mm)

Weights(kg)

W2 H1 W1 L1 L2 IntakeSolid

Bottom

Discharge Total

XA, XB, XC

Disch. Att.

Int. Att. XA, XB XC XA, XB, XC XA XB XC XA XB XC XA XB XC

10 - 25 3 1 2 2352 N.A. 1090 1030 890 900 110 130 N.A. 30 130 150 N.A. 270 310 N.A.

30 - 55 3(1) 1 2 2352 N.A. 1090 1030 1800 1815 175 220 N.A. 50 175 220 N.A. 400 490 N.A.

65 - 85 3(1) 1 2 2352 N.A. 1090 1030 2710 2730 230 300 N.A. 70 280 350 N.A. 580 720 N.A.

95 - 135 4(2) 1 2 2352 N.A. 1090 1030 3635 3645 300 370 830 100 360 420 N.A. 760 890 N.A.

150 - 185 4 1 2 2583 3728 1600 1420 3635 3645 380 480 1080 120 440 520 1070 940 1120 2270

N215 – N265 4 1 2 3542 4687 2070 1955 3510 3645 500 630 1420 190 530 650 1330 1220 1470 2940

N310 – N395 4 2 2 3542 4687 2070 1955 5365 5480 660 860 1970 300 760 970 1980 1720 2130 4250

N430 - N535 7 2 2 3542 4687 2070 1955 7185 7320 1000 1260 2840 380 1060 1300 2660 2440 2940 5880

C215 - C265 4 1 2 3390 4687 2070 1955 3510 3645 500 630 1420 190 530 650 1330 1220 1470 2940

C310 – C395 4 2 2 3390 4687 2070 1955 5365 5480 660 860 1970 300 760 970 1980 1720 2130 4250

C430 – C535 7 2 2 3390 4535 2070 1955 7185 7320 1000 1260 2840 380 1060 1300 2660 2440 2940 5880

S220 – S320 4 1 2 3542 4687 2070 2365 3550 3645 500 630 1420 190 660 800 1640 1350 1620 3250

S345 – S470 4 2 2 3542 4687 2070 2365 5385 5480 660 860 1970 300 830 1090 2240 1790 2250 4510

S530 – S640 7 2 2 3542 4687 2070 2365 7226 7322 1000 1260 2840 380 1320 1600 3280 2700 3240 6500

S690 – S940 7 4 2 3542 4687 2070 2365 10903 10998 1320 1720 3940 600 1660 2180 4480 3580 4500 9020

315 - 400 4 2 2 4145 5290 2560 2965 3510 3645 560 710 1620 230 710 880 1820 1500 1820 3670

470 - 600 4 2 2 4145 5290 2560 2965 5365 5480 730 980 2240 350 900 1210 2490 1980 2540 5080

630 - 800 7 4 2 4145 5290 2560 2965 7185 7320 1120 1420 3240 460 1420 1760 3640 3000 3640 7340

870 - 1200 10 3 3 4145 5290 2560 2965 10865 10995 1680 2130 4860 690 2130 2640 5460 4500 5460 11010

Baltimore Aircoil

VXT - B 19

Open C

ooling Towers

Structural SupportREMARK: Do not use for construction. Refer to factory certified dimensions & weights. This brochure includes datacurrent at time of publication, which should be reconfirmed at the time of purchase. In the interest of productimprovement, specifications, weights and dimensions are subject to change without notice. Up-to-date engineeringdata and more can be found at www.BaltimoreAircoil.com.

The recommended support arrangement for units consists of parallel I-beams running the full length of the unit, spaced as shown in the following drawing. Besides providing adequate support, the steel also serves to raise the unit above any solid foundation to ensure access to the bottom of the unit. To support units in an alternate steel support arrangement, consult your BAC Balticare Representative.

Units without Sound Attenuation

ModelA

Unit Length(mm)

BUnit Width

(mm)

CCenter dis.

Length(mm)

DCenter dis.

Width(mm)

E(mm)

F(mm)

G(mm)

H(mm)

XMax. Deflection

(mm)Mounting

Holes

VXT 10-25 914 1207 750 1153 - - - - 2 4

VXT 30-55 1829 1207 1664 1153 - - - - 5 4

VXT 65-84 2737 1207 2572 1153 - - - - 8 4

VXT 95-135 3658 1207 3492 1153 - - - - 10 4

VXT 150-185 3645 1438 3492 1378 - - - - 10 4

VXT N215-N265 3550 2397 3238 2327 - - - - 10 4

VXT 315-400 3550 3000 3238 2934 - - - - 10 4

VXT N310-N395 5388 2397 5074 2327 2496 102 - - 13 8

VXT 470-600 5388 3000 5074 2934 2496 102 - - 13 8

VXT N430-N535 7226 2397 6914 2327 3238 438 - - 13 8

VXT C215–C265 3550 2245 3238 2175 - - - - 10 4

VXT C310-C395 5385 2245 5074 2175 2486 102 - - 13 8

1. Outline of Unit; 2. Mounting Holes Ø 22 mm; 3. Unit; 4. Air Intake.


VXT - B 20

VX

T

Units with Sound Attenuation

VXT C430-C535 7226 2246 6914 2175 3238 438 - - 13 8

VXT S220-S320 3550 2397 3238 2327 - - - - 10 4

VXT S345-S470 5385 2397 5074 2327 2486 102 - - 13 8

VXT S530-S640 7226 2397 6914 2327 3238 438 - - 13 8

VXT S690-S940 10903 2397 10586 2327 2486 102 438 - 13 16

VXT 630-800 7226 3000 6914 2934 3238 438 - - 13 8

VXT 870-1200 10903 3000 10590 2934 3238 438 3238 438 13 12

ModelA

Unit Length(mm)

BUnit Width

(mm)

CCenter dis.

Length(mm)

DCenter dis.

Width(mm)

E(mm)

F(mm)

G(mm)

H(mm)

XMax. Deflection

(mm)Mounting

Holes

1. Outline of Unit; 2. Mounting Holes Ø 22 mm; 3. Outline of attenuator (optional XA or XB); 4. Support Channel attached to optional XA or XB attenuator; 5. (3 + 5) Outline of Attenuator (optional XC); 6. (4 + 6) Support Channels attached to optional XC attenuator; 7. Unit; 8. Sound Attenuation (Type XA, XB or XC); 9. Air Intake.

Baltimore Aircoil

VXT - B 21

Open C

ooling Towers

Notes:

1. The recommended support arrangement for VX units consists ofparallel I-beams extending the full length of the unit. Supports andanchor bolts are to be designed and furnished by others.

2. All supporting beams are to be flush and level at top and must beoriented relative to gage line as shown.

3. Recommended design loads for each unit support beam shouldbe 70% of the total unit operating weight applied as a uniform loadto each of the unit beams. The support beam(s) for the optionalintake attenuator(s) needs to carry attenuator only, uniform load of250 kg/m. Beams should be designed in accordance with

standard structural practice. For the maximum allowabledeflection of beams under the unit refer to above table.

4. All mounting holes have a diameter of 22 mm at the locationsshown.

5. If vibration isolators are used, a rail or channel must be providedbetween the unit (and optional attenuator) and the isolators toprovide continuous unit support. Additionally the support beamsmust be designed to accommodate the overall length andmounting hole location of the isolators that may differ from thoseof the unit. Refer to vibration isolator drawings for these data.


VXT - B 22

VX

T
Engineering Specifications1.0 Cooling Tower1.1 General: Furnish and install _____ factory-assembled, forced-draft, centrifugal fan, counter flow cooling tower(s) with vertical air discharge, conforming in all aspects to the specifications, schedules and as shown on the plans. Overall dimensions shall not exceed approximately _____ mm long x ______ mm wide x _____ mm high. The total connected fan power shall not exceed _____ kW. The cooling tower(s) shall be Baltimore Aircoil Model ____________.
1.2 Thermal Capacity: The cooling tower(s) shall be warranted by the manufacturer to cool _____ l/s of water from ______ °C to _____C at _____°C entering wet-bulb temperature.

1.3 Corrosion Resistant Construction (standard): Unless otherwise noted in this specification, all steel panels and structural members shall be constructed of heavy-gauge Z600 metric hot-dip galvanized steel with all edges given a protective coating of zinc-rich compound and the exterior protected with the BALTIPLUS Protection.

(Alternate 1.3) Corrosion Resistant Construction (optional): Unless otherwise noted in this specification, all steel panels and structural members shall be protected with the BALTIBOND®

Corrosion Protection System. The system shall consist of Z600 metric hot-dip galvanized steel prepared in a four-step (clean, pre-treat, rinse, dry) process with an electrostatically sprayed, thermosetting, hybrid polymer fuse-bonded to the substrate during a thermally activated curing stage and monitored by a 23-step quality assurance program.

(Alternate 1.3) Corrosion Resistant Construction (optional): Unless otherwise noted in this specification, all steel panels and structural members shall be constructed of Type 304 or 316 stainless steel and assembled with stainless steel nut and bolt fasteners.

1.4 Quality Assurance: The cooling tower manufacturer shall have a Management System certified by an accredited registrar as complying with the requirements of ISO-9001:2000 to ensure consistent quality of products and services.

1.5 Warranty: The manufacturer’s standard equipment warranty shall be for a period of not less than one year from date of startup or eighteen months from date of shipment, whichever occurs first.

2.0 Construction Details2.1 Structure (VX-Line models): The cooling tower shall be constructed of heavy-gauge steel utilizing double-brake flanges for maximum strength and rigidity and reliable sealing of watertight joints. The heat transfer section shall be removable from the pan/fan section to facilitate shipping and handling. The fan(s) and fan drive system, including the fan motor, shall be factory mounted and aligned and located in the dry entering air stream to ensure reliable operation and ease of maintenance.

2.2 Heat Transfer Section: The heat transfer sections(s) shall consist of a wet deck surface, spray water distribution system and drift eliminators arranged for optimal thermal performance with minimal drift.

2.3 Wet Deck Surface: The wet deck surface shall be formed from self-extinguishing plastic material and shall be impervious to rot, decay, and fungus or biological attack. The wet deck surface shall be manufactured and performance tested by the cooling tower manufacturer to assure single source responsibility and control of the final product.

2.4 Water Distribution System: Water shall be distributed evenly over the wet deck surface by a water distribution system consisting of a header and spray branches of plastic pipe with large orifice, non-clog plastic distribution nozzles. The branches and spray nozzles shall be held in place by snap-in rubber grommets, allowing quick

removal of individual nozzles or complete branches for cleaning or flushing.

2.5 Cold Water Basin: The cold water basin shall be provided with large area lift out strainers with perforated openings sized smaller than the water distribution system nozzles and an anti-vortexing device to prevent air entrainment. The strainer and anti-vortexing device shall be constructed of the same material as the basin to prevent dissimilar metal corrosion. Standard basin accessories shall include a brass make-up valve with large diameter polystyrene filled plastic float for easy adjustment of the operating water level.

(Alternate2.5) Cold Water Basin: The cold water basin shall be constructed of heavy-gauge Type 304 or 316 stainless steel panels and structural members up to the heat transfer section/basin joint. The basin shall be provided with large area lift out strainers with perforated openings sized smaller than the water distribution system nozzles and an anti-vortexing device to prevent air entrainment. The strainer and anti-vortexing device shall be constructed of the same material as the basin to prevent dissimilar metal corrosion. Standard basin accessories shall include a brass make-up valve with large diameter polystyrene filled plastic float for easy adjustment of the operating water level.

3.0 Mechanical Equipment3.1 Fan(s): Fan(s) shall be dynamically balanced, forwardly curved, centrifugal type selected to provide optimum thermal performance with minimal sound levels. Fan housings shall have curved inlet rings for efficient air entry and four-sided rectangular discharge cowls shall extend into the basin to increase fan efficiency and prevent water from splashing into the fans.

3.2 Bearings: Fan(s) and shaft(s) shall be supported by heavy-duty, self-aligning, relubricatable bearings with cast iron housings, designed for a minimum L10 life of 40 000 hours (280 000 Hr. Average. Life).

3.3 Fan Drive: The fan(s) shall be driven by matched V-belts with taper lock sheaves. Motor shall be located on a heavy-duty motor

base, adjustable by a single threaded bolt-and-nut arrangement. Removable steel screens or panels shall protect the fan drive and all moving parts.

3.4 Fan Motor: Furnish _____ kW, ______ RPM Totally Enclosed, Fan Cooled (TEFC), squirrel cage, ball bearing type fan motors suitable for outdoor service. Motor(s) shall be suitable for ________ volt, ___ hertz, and __ phase electrical service.

3.5 BALTIGUARD® Fan System (optional): Two-single speed fan motors, one sized for full speed and load, the other sized for 2/3 speed and approximately 1/3 of full load kW shall be provided in each cell for capacity control and stand-by protection from drive or motor failure. Two-speed motor(s) are not an acceptable alternative.

Baltimore Aircoil

VXT - B 23

Open C

ooling Towers

4.0 Drift Eliminators4.1 Drift Eliminators: Eliminators shall be constructed of specially formulated plastic material and be removable in easily handled sections. They shall have a minimum of three changes in air direction.

5.0 Access5.1 Basin Access: Circular access doors shall be provided for easy access to the make-up water assembly and suction strainer for routine maintenance.

6.0 Sound6.1 Sound Level: To maintain the quality of the local environment, the maximum sound pressure levels (dB) measured 15 m from the

cooling tower operating at full fan speed shall not exceed the sound levels detailed below.

Location 63 125 250 500 1000 2000 4000 8000 dB(A)

Discharge

Air Inlet

End

Back


VXT - B 24

VX

T

Baltimore Aircoil

eBroc-VXT Open Type Cooling Tower

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