Product Introduction...E35. Benefits...E37. Construction Details...E39. Custom Features & Options...E41. Accessories...E44. Engineering Data...

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1 Series V Closed Circuit Cooling Towers Product Detail Closed Circuit Cooling Towers Product Introduction E35 Benefits E37 Construction Details E39 Custom Features & Options E41 Accessories E44 Engineering Data E47 Structural Support E55 Engineering Specifications E56 Engineering Considerations E77 E34

2 E35 Spotlight

3 Single Side Air Inlet Sound Sensitive Alternatives Suitable for Indoor or Outdoor Installations Low Profile Models Available BALTIGUARD PLUS Fan System E36

4 Benefits Series V Installation and Application Flexibility Indoor Installations Centrifugal fans can overcome the static pressure imposed by external ductwork, allowing the Series V to be installed indoors. Low Profile Models The fan section of low profile units are adjacent to the casing section to yield models suitable for use in height sensitive installations. Low profile models are available in capacities from 4.5 to 108 nominal tons, which correspond to heights of 5' 5 (1651mm) and 8' 4-3/4 (2559.1mm), respectively. Low Sound Low Profile Series V Closed Circuit Cooling Tower Centrifugal Fan Centrifugal fans have inherently low sound characteristics. Single Air Inlet Particularly sound-sensitive areas can be accommodated by facing the quiet blank-off panel to the sound-sensitive direction. Attenuation For extremely sound sensitive applications, factory designed tested/rated sound attenuation is available for both the air intake and discharge. Low Energy Consumption Evaporative Cooling Equipment Minimizes the energy consumption of the entire system because it provides lower operating temperatures. Owners save money while conserving natural resources and reducing environmental impact. Motors Premium efficient/vfd duty motors are standard. Long Service Life Materials of Construction Various materials are available to meet the corrosion resistance, unit operating life, and budgetary requirements of any project (see page E41 for construction options). E37 Baltimore Aircoil Company

5 Easy Maintenance Internal Access The interior of the unit is easily accessible for adjusting the float valve, cleaning the strainer or flushing the basin. Reliable Year-Round Operation V-Belt Drive The fans, motor, and drive system are located outside of the moist discharge airstream, protecting them from moisture, condensation and icing. Backed by a 5-year fan drive and motor warranty, these units are suitable for year-round operation. Low Installed Cost Support All models mount directly on two parallel I- beams and ship complete with motors and drives factoryinstalled 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. The Water Level control (Optional Electric Control Shown Here) is Easily Reached From the Access Door V-Belt Drive System Closed Circuit Cooling Towers VF1 Models VFL Models Steel Supports Steel Supports...because temperature matters E38

6 Construction Details Series V Coil section (typical for all models) 1 Heavy-Duty Construction G-235 (Z700 metric) hot-dip galvanized steel panels 2 Water Distribution System Schedule 40 PVC spray branches Large orifice, 360, non-clog nozzles Grommetted for easy removal 3 Coil Continuous serpentine, steel tubing Hot-dip galvanized after fabrication (HDGAF) Pneumatically tested at 375 psig Sloped tubes for free drainage of fluid ASME B31.5 compliant When required, orders shipping into Canada are supplied with a CRN 4 Drift Eliminators Polyvinyl chloride (PVC) Impervious to rot, decay and biological attack Flame spread rating of 5 per ASTM E84 Assembled in easy to handle sections E39 Baltimore Aircoil Company

7 8 7 5 VF1 Models VFL Models Closed Circuit Cooling Towers 5 Fan Drive System 7 Recirculating Spray Pump V-belt drive Heavy-duty bearings L 10 40,000 hours (280,000 hour average life) Premium efficient/vfd duty motors as standard 5-year motor and drive warranty 6 Low Sound Centrifugal Fan(s) Quiet operation Corrosion resistant Close coupled, bronze fitted centrifugal pump Totally enclosed fan cooled (TEFC) motor Bleed line with metering valve installed from pump discharge to overflow 8 Access Door Interior of unit is easily accessible 9 Strainer (Not Shown) Anti-vortexing design to prevent air entrainment...because temperature matters E40

8 Custom Features and Options Construction Options Series V Standard Construction: Steel panels and structural elements are constructed of heavy-gauge G-235 hot-dip galvanized steel. Optional Thermosetting Hybrid Polymer: A thermosetting hybrid polymer coating used to extend equipment life, is applied to select hot-dip galvanized steel components of the cooling tower. The thermosetting hybrid polymer has been tested to withstand 6000 hours in a 5% salt spray without blistering, chipping, or loss of adhesion. Optional Stainless Steel Construction: A variety of Stainless Steel options are available to meet your needs. See page M20 for more details on the materials described above. Coil Configurations Standard Serpentine Coil: The standard cooling coil is constructed of continuous lengths of all prime surface steel, hot-dip galvanized after fabrication (HDGAF). The galvanizing is the outside surface of the coil. The coil is designed for low pressure drop with sloping tubes for free drainage of fluid. Each coil is pneumatically tested at 375 psig (2,586 kpa) and is ASME B31.5 compliant. Serpentine Coil Optional Extended Surface Coil: Coils are available with half or all rows finned at 5 fins per inch for seasonal wet/dry operation. The coil is hot-dip galvanized after fabrication (HDGAF). The galvanizing is the outside surface of the coil. The coil is designed for low pressure drop with sloping tubes for free drainage of fluid. Each coil is pneumatically tested at 375 psig (2,586 kpa) and is ASME B31.5 compliant. Welding Header on Coil E41 Baltimore Aircoil Company

9 Coil Configurations Optional Stainless Steel Coil: Coils are available in Type 304 stainless steel for specialized applications. The coil is designed for low pressure drop with sloping tubes for free drainage of fluid. Each coil is pneumatically tested at 375 psig (2,586 kpa) and is ASME B31.5 compliant. Optional Cleanable Header Coil: The cleanable header tube bundle provides removable cover plates on the inlet and outlet header boxes to permit access to each serpentine tube circuit for solvent or air-pressure cleaning. Tubes are all prime surface steel tubing formed into a serpentine shape and welded into an assembly. Coil material options include carbon steel coils (hot-dip galvanized outside surface) or stainless steel coils. Each coil is pneumatically tested at 125 psig (860 kpa). Optional Straight-Through Cleanable Coil: A header box with a removable cover plate at each end of the coil allows access to every tube end for mechanical cleaning or plugging. It is available in carbon steel (hot-dip galvanized inside and out) or stainless steel. Each coil is pneumatically tested at 125 psig (860 kpa). Optional ASME U Stamp Coil: This coil is manufactured and tested in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, and bears the ASME U stamp. ASME coils are hot-dip galvanized (outside surface) after fabrication (HDGAF). The coil is designed for low pressure drop with sloping tubes for free drainage of fluid. Each coil is pneumatically tested at 375 psig (2,586 kpa). When required, orders shipping into Canada are supplied with a CRN. Other coil configurations are available for specific applications. Contact your local BAC Representative for details. Closed Circuit Cooling Towers Cleanable Header Coil Straight-through Cleanable Coil...because temperature matters E42

10 Custom Features and Options Fan Drive System Series V The fan drive system provides the cooling air necessary to reject unwanted heat from the system to the atmosphere. Dynamically balanced, forwardly curved, centrifugal fans driven by matched V-belts with taper lock sheaves designed for not less than 150% of the motor nameplate horsepower are standard. Cooling tower duty fan motors, custom engineered for BAC to provide maximum performance for cooling tower service, are provided and backed by BAC s comprehensive 5-year motor and fan drive warranty. Standard Fan Drive System BALTIGUARD Fan System The BALTIGUARD Fan 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 the design horsepower. This configuration allows the reserve capacity of a standby motor in the event of failure. As a minimum, approximately 70% capacity will be available from the low horsepower motor, even on a design wet-bulb day. Controls and wiring are the same as those required for a two-speed, two-winding motor. On some units the standby fan motor can be increased to the size of the main motor for 100% redundancy. BALTIGUARD Fan System BALTIGUARD PLUS TM Fan System The BALTIGUARD PLUS TM Fan System builds on the advantages of the BALTIGUARD Fan System by adding a VFD to one of the motors. For more information on the BALTIGUARD PLUS TM Fan System refer to section K. E43 Baltimore Aircoil Company

11 Accessories Equipment Controls BAC control panels are specifically designed to work seamlessly with all BAC units and engineered to meet your particular application. For more on BAC Equipment Controls, see section K. Low Sound Alternatives The low sound levels generated by Series V Closed Circuit Cooling Towers make them suitable for most installations. For situations when one direction is particularly sound sensitive, the unit can be oriented Variable Frequency Drive so that the side opposite the air intake faces the sound-sensitive direction. The Series V is also available with factory designed, tested and rated sound attenuation for both the air intake and discharge. External Access Options (VF1 Models Only) In the event the end-user elects to provide access to the top of the unit, VF1 models can be furnished with ladders extending from the base of the unit to the top, as well as safety cages, safety gates and handrail packages. All components are designed to meet OSHA requirements. All access to the top of the equipment must be made in accordance with applicable government occupational safety standards. Closed Circuit Cooling Towers NOTE: When these access options are employed, the unit must be equipped with steel drift eliminators. Unit Shown with Sound Attenuation Vibration Cutout Switch A factory mounted vibration cutout switch is available to effectively protect against equipment failure due to excessive vibration of the mechanical equipment system. BAC can provide either a mechanical or solid-state electronic vibration cutout switch in a NEMA 4 enclosure to ensure reliable protection. Additional contacts can be provided to activate an alarm....because temperature matters E44

12 Series V Electric Water Level Control Package The electric water level control replaces the standard mechanical makeup valve when a more precise water level control is required. This package consists of a conductance-actuated level control mounted in the basin and a solenoid activated valve in the make-up water line. The valve is slow closing to minimize water hammer. Basin Heaters Basin Heater Closed circuit cooling towers 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 electric immersion heaters, which maintain +40 F (4.4 C) water temperature, are a simple and inexpensive way of providing such protection. Heater kw Data 0 F (-17.8 C) Ambient Heaters -20 F (-28.9 C) Ambient Heaters Model Numbers No. of Heaters kw per Heater No. of Heaters kw per Heater VFL VFL VFL VFL VFL VFL VF VF VF VF VF VF VF VF1-144N VF VF VF VF1-288N VF VF E45 Baltimore Aircoil Company

13 Extended Lubrication Lines Extended lubrication lines with grease fittings located outside the fan section are available for lubrication of the fan shaft bearings. Bottom Screens (VF1 Models Only) Wire mesh screens are available factory-installed over the bottom openings to prevent unauthorized access. Basin Sweeper Piping Basin sweeper piping is an effective method of eliminating sediment that may collect in the cold water basin of the tower. A piping system is provided for connection to side stream filtration equipment (by others). For more information on filtration systems, see page M163. Solid Bottom Panels Factory-installed bottom panels are required when intake air is ducted to the unit. Discharge Hoods BAC offers a full line of standard discharge hoods with and without positive closure dampers that are built, tested, and rated specifically for all Series V Closed Circuit Cooling Towers. The tapered hoods are designed to increase the discharge air velocity to avoid recirculation in extremely tight enclosures. Straight or tapered hoods can be used to elevate the unit discharge above adjacent walls. A larger fan motor may be necessary when this option is provided. See page E53 for details of hoods furnished with positive closure dampers. Solid Bottom Panels Closed Circuit Cooling Towers Tapered Discharge Hood...because temperature matters E46

14 VFL Engineering Data Do not use for construction. Refer to factory certified dimensions. This handbook includes data current at the time of publication, which should be reconfirmed at the time of purchase. Up-to-date engineering data, free product selection software, and more can be found at Series V End Elevation View Side Elevation View Models VFL-012 to 048 End Elevation View Side Elevation View Models VFL-072 to 096 E47 Baltimore Aircoil Company

15 See page E77 for Engineering Considerations. Model Number Motor Hp Weights (Lbs) Dimensions Connections Spray Pump (GPM) Nominal Airflow Tons 1 Fan 5 Pump (CFM) Operating 2 Shipping L H F Coil 3,6 Overflow VFL F 4 2 1/3 8,050 2,560 1, / / VFL G 5 3 1/3 9,220 2,560 1, / / VFL F 7 2 1/3 7,870 2,810 2, / / / VFL H 9 5 1/3 10,680 2,810 2, / / / VFL F 8 2 1/3 7,750 3,140 2, / / VFL H /3 10,510 3,140 2, / / VFL G /3 8,760 3,140 2, / / VFL H /3 10,380 3,140 2, / / VFL H /2 15,430 4,610 3, / / / VFL H /2 15,180 4,610 3, / / / VFL J /2 17,380 5,130 3, / / VFL H /2 14,990 5,750 3, / / / VFL J /2 17,160 5,750 3, / / / VFL K ,580 7,070 4, / / VFL L ,990 7,070 4, / / VFL M ,710 7,070 4, / / Internal Coil Volume (Gal) VFL M ,340 7,950 5, / / / VFL K ,290 7,950 5, / / / VFL L ,660 7,950 5, / / / VFL M ,340 7,950 5, / / / VFL L /2 29,150 8,905 5, / / / VFL L /2 28,790 9,920 6, / / / VFL M /2 31,680 9,920 6, / / / VFL L /2 28,490 10,950 7, / / / VFL N /2 45,390 13,555 8, / / VFL O /2 48,240 13,555 8, / / VFL N /2 44,830 15,190 9, / / / VFL O /2 47,640 15,190 9, / / / VFL P /2 52,430 15,190 9, / / / VFL N /2 44,370 16,590 10, / / / VFL O /2 47,150 16,590 10, / / / VFL P /2 51,900 16,590 10, / / / VFL N ,920 20,680 12, / / / VFL O ,110 20,680 12, / / / VFL P ,560 20,680 12, / / / Closed Circuit Cooling Towers Notes: 1. Nominal tonnage is CTI Certified performance at a 95ºF entering water temperature, an 85ºF leaving water temperature, and a 78ºF entering wet-bulb temperature. Consult BAC selection software for all other conditions. 2. Operating weight is for the unit with water level in the cold water basin at the overflow. 3. Standard coil connections are beveled for welding. 4. If discharge hoods with positive closure dampers are furnished, see page E53 for added weight and height. Fan motor horsepower may increase; consult selection software for verification. 5. Fan horsepower is at 0 external static pressure. 6. The number and location of coil connections will vary with design flow and coil arrangement. 7. All units ship in one piece. 8. VFL-012 to 048, the riser pipe diameter is 3. For VFL-072 to 096, the riser pipe diameter is 4....because temperature matters E48

16 VF1 Engineering Data Do not use for construction. Refer to factory certified dimensions. This handbook includes data current at the time of publication, which should be reconfirmed at the time of purchase. Up-to-date engineering data, free product selection software, and more can be found at Series V End Elevation View Side Elevation View Models VF1-009 to 036 End Elevation View Side Elevation View Models VF1-048 End Elevation View Side Elevation View Models VF1-072 E49 Baltimore Aircoil Company

17 Motor Hp Weights (LBS) Dimensions Connections Spray Model Number Nominal Tons 1 Fan 5 Pump Airflow (CFM) Operating 2 Shipping Heaviest Section 7 L H F A Coil 3,6 Overflow Pump (GPM) Internal Coil Volume (Gal) VF E ,510 1,875 1,625 1, / /4 20 VF F 5 2 4,970 1,875 1,625 1, / /4 20 VF G 5 3 5,690 1,875 1,625 1, / /4 20 VF F 6 2 1/3 4,890 2,075 1,785 1, / / / VF G 7 3 5,590 2,075 1,785 1, / /4 26 VF G 8 3 5,520 2,295 1,965 1, / /4 31 VF G 9 3 5,470 2,495 2,125 1, / /4 36 VF F 9 2 8,050 2,955 2,415 2, / /4 38 VF G ,220 2,955 2,415 2, / /4 38 VF H ,930 2,955 2,415 2, / /4 38 VF H ,750 3,260 2,640 1, / /4 49 VF J ,310 3,260 2,640 1, / /4 49 1/ / VF G ,960 3,660 2,940 2, / /4 60 VF H ,620 3,660 2,940 2, / /4 60 VF J ,150 3,660 2,940 2, / /4 60 VF H ,510 4,010 3,190 2, / /4 71 VF J ,030 4,010 3,190 2, / /4 71 VF H ,060 4,860 3,750 2, / /4 72 VF J ,090 4,860 3,750 2, / /4 72 VF K ,710 4,860 3,750 2, / /4 72 VF H ,880 5,440 4,180 2, / /2 89 VF J /4 15,890 5,440 4,180 2, / / / / VF K ,490 5,440 4,180 2, / /2 89 VF H ,740 5,970 4,570 3, / /4 106 VF J ,730 5,970 4,570 3, / /4 106 VF K ,310 5,970 4,570 3, / /4 106 VF L ,870 6,280 4,760 3, / /4 95 VF J ,740 6,280 4,760 3, / /4 95 VF K ,730 6,280 4,760 3, / /4 95 VF L ,870 6,280 4,760 3, / / / VF L ,560 7,020 5,310 3, / /2 118 VF J ,490 7,020 5,310 3, / /2 118 VF L ,310 7,710 5,810 4, / /4 140 VF L ,100 8,390 6,310 4, /4 163 VF L ,520 10,230 7,870 4, / /4 137 VF M ,790 10,230 7,870 4, / /4 137 VF M ,340 11,390 8,460 5, / / / / / VF N ,070 11,390 8,460 5, / /2 170 VF M ,980 12,690 9,320 6, / /4 203 VF N ,690 12,690 9,320 6, / /4 203 VF M ,990 15,670 10,720 6, / /4 190 VF N ,540 15,670 10,720 6, / /4 190 VF O ,650 15,670 10,720 6, / /4 190 VF M ,420 17,380 12,050 7, / /2 235 VF N ,930 17,380 12,050 7, / / / / VF O ,990 17,380 12,050 7, / /2 235 VF M ,960 18,000 12,480 9, / /4 281 VF N ,430 18,000 12,480 9, / /4 281 VF O ,460 18,000 12,480 9, / /4 281 Closed Circuit Cooling Towers Notes for pages 50 and 52: 1. Nominal tonnage is CTI Certified performance at a 95ºF entering water temperature, an 85ºF leaving water temperature, and a 78ºF entering wet-bulb temperature. Consult BAC selection software for all other conditions. 2. Operating weight is for the unit with water level in the cold water basin at the overflow. 3. Standard coil connections are beveled for welding. 4. If discharge hoods with positive closure dampers are furnished, see page E53 for added weight and height. Fan motor horsepower may increase; consult selection software for verification. 5. Fan horsepower is at 0 external static pressure. 6. The number and location of coil connections will vary with design flow and coil arrangement. 7. Units marked with an asterisk ship in one piece. The coil section is the heaviest section. 8. For VF1-009 to 048, the riser pipe diameter is 3. For VF1-072, 096, and 192 the riser pipe diameter is 4. For VF1-144N, 288N, and VF1-144 to 432, the riser pipe diameter is 6....because temperature matters E50

18 VF1 Engineering Data Do not use for construction. Refer to factory certified dimensions. This handbook includes data current at the time of publication, which should be reconfirmed at the time of purchase. Up-to-date engineering data, free product selection software, and more can be found at Series V End Elevation View Side Elevation View Models VF1-096 to 144N, & VF1-192 to 288N Models VF1-096, 144N, & 144 Models VF1-144, 216, & VF1-288 to 432 Models VF1-216 Models VF1-192 & 288 Models VF1-432 E51 Baltimore Aircoil Company

19 Motor Hp Weights (Lbs) Dimensions Connections Model Number Nominal Tons 1 Fan 5 Pump Airflow (CFM) Operating 2 Shipping Heaviest Section 7 L H F A Coil 3,6 Overflow Spray Pump (GPM) Internal Coil Volume (Gal) VF O ,540 19,385 12,795 8, / /2 296 VF P ,930 19,385 12,795 8, / /2 296 VF Q ,480 19,385 12,795 8, / /2 296 VF O ,990 21,345 14,215 9, / / / / VF P ,320 21,345 14,215 9, / /4 353 VF Q ,830 21,345 14,215 9, / /4 353 VF P ,820 23,305 14,855 10, / VF Q ,290 23,305 14,855 10, / VF1-144N-21P ,490 25,610 16,430 10, / /4 356 VF1-144N-21Q ,700 25,610 16,430 10, / /4 356 VF1-144N-21R ,250 25,610 16,430 10, / /4 356 VF1-144N-31P ,640 28,480 18,490 12, / /2 443 VF1-144N-31Q ,790 28,480 18,490 12, / / / / VF1-144N-31R ,290 28,480 18,490 12, / /2 443 VF1-144N-41P ,960 31,560 20,750 14, / /4 529 VF1-144N-41Q ,060 31,560 20,750 14, / /4 529 VF1-144N-41R ,510 31,560 20,750 14, / /4 529 VF O ,150 38,900 25,570 8, / /2 592 VF P ,830 38,900 25,570 8, / /2 592 VF Q ,850 38,900 25,570 8, / /2 592 VF O ,060 42,780 28,360 9, / / / / VF P ,640 42,780 28,360 9, / /4 706 VF Q ,570 42,780 28,360 9, / /4 706 VF P ,640 46,660 29,780 10, / VF Q ,490 46,660 29,780 10, / VF1-288N-21P ,080 51,290 32,750 11, / /4 712 VF1-288N-21Q ,510 51,290 32,750 11, / /4 712 VF1-288N-21R ,630 51,290 32,750 11, / /4 712 VF1-288N-31P ,400 57,080 36,950 12, / /2 886 VF1-288N-31Q ,700 57,080 36,950 12, / / / / , VF1-288N-31R ,700 57,080 36,950 12, / /2 886 VF1-288N-41P ,030 63,220 40,520 14, / /4 1,058 VF1-288N-41Q ,230 63,220 40,520 14, / /4 1,058 VF1-288N-41R ,140 63,220 40,520 14, / /4 1,058 VF P ,320 27,090 16,530 10, / /4 365 VF Q ,600 27,090 16,530 10, / /4 365 VF R ,080 27,090 16,530 10, / /4 365 VF P ,300 29,980 18,610 12, / /2 453 VF Q ,500 29,980 18,610 12, / / / VF R ,920 29,980 18,610 12, / /2 453 VF P ,480 32,840 20,640 14, /4 541 VF Q ,620 32,840 20,640 14, /4 541 VF R ,990 32,840 20,640 14, /4 541 VF N ,660 40,190 24,200 15, / /4 545 VF O ,030 40,190 24,200 15, / /4 545 VF P ,610 40,190 24,200 15, / /4 545 VF N ,190 44,370 27,140 18, / /2 677 VF O ,470 44,370 27,140 18, / / / VF P ,890 44,370 27,140 18, / /2 677 VF O ,210 48,570 30,090 21, /4 809 VF P ,510 48,570 30,090 21, /4 809 VF Q ,900 48,570 30,090 21, /4 809 VF P ,630 54,300 32,930 12, / /4 730 VF Q ,190 54,300 32,930 12, / /4 730 VF R ,170 54,300 32,930 12, / /4 730 VF P ,600 60,100 37,020 12, / / / ,240 VF Q ,010 60,100 37,020 12, / /2 906 VF R ,850 60,100 37,020 12, / /2 906 VF Q ,970 65,720 41,050 14, /4 1,082 VF R ,240 65,720 41,050 14, /4 1,082 VF N ,310 79,600 45,960 18, / /4 1,090 VF O ,060 79,600 45,960 18, / /4 1,090 VF P ,220 79,600 45,960 18, / /4 1,090 VF N ,380 88,320 52,400 18, / /2 1,354 VF O ,940 88,320 52,400 18, / / / ,800 1,354 VF P ,790 88,320 52,400 18, / /2 1,354 VF O ,420 97,320 59,200 21, /4 1,618 VF P ,010 97,320 59,200 21, /4 1,618 VF Q ,790 97,320 59,200 21, /4 1,618 Closed Circuit Cooling Towers...because temperature matters E52

20 Series V Engineering Data Discharge Hoods with Positive Closure Dampers Both tapered and straight discharge hoods with factory mounted positive closure dampers and damper actuators are available for all Series V Closed Circuit Cooling Towers. Hoods are designed to minimize heat loss from convective air flow through an idle unit. The addition of factory installed insulation to the hood and casing further reduces the heat loss by minimizing losses due to conduction. Heat loss data is presented on page E54 for units without hood, with hood, and with insulated casing and hood. Damper actuators and linkage are factory mounted on the hood. All wiring and actuator controls must be furnished by others. 115 volt single phase power supply is required. Damper actuators should be interlocked with the temperature control system so that the dampers are open when the pumps are running and closed when the pumps are off. The additional external static pressure of the tapered discharge hood with dampers may require the use of a larger fan motor; consult selection software for verification. Consult your local BAC Representative for unit drawing with a hood and positive closure dampers. Tapered Straight Model Number Number of Hoods Required L W H Total Shipping Weight (LBS) L W H Total Shipping Weight (Lbs) VFL / / / /8 3 3/ / VFL / / / / / VFL / / /2 3 3/ / VFL / / / / VFL / / / / VFL /2 4-1/ , / /4 2 1,200 4 VF / / / /8 3 3/ / VF / / / /4 3 3/ / VF / / /2 3 3/ / VF / / / / VF / / /2 1 1, / /8 2 1,220 3 VF /2 3 3/ /2 1 1, / /8 2 1,620 3 VF /2 4 1/ /2 2 1, / /8 2 1,320 4 VF1-144N / / /2 2 1, / /8 2 1,820 4 VF / / /2 2 1, / /8 2 1,750 4 VF /2 4 1/ /2 2 2, / /8 2 2,640 4 VF / /2 2 2, / /8 2 2,400 4 VF1-288N / / /2 2 3, / /8 2 3,640 4 VF / / /2 2 3, / /8 2 3,500 4 VF / /2 2 4, / /8 2 4,800 4 Notes (applicable to specific models only): 1. On these models, the discharge hood surrounds the drift eliminators and is recessed into the drift eliminator frame; therefore, the overall height of the unit with hood equals H (of unit) plus H (of hood) minus On these units, the hood sits directly on top of the casing. 3. Includes drift eliminators and skid. 4. Includes skid only. Drift eliminators are included in unit weight. E53 Baltimore Aircoil Company

21 Heat Loss Data See page E77 for Engineering Considerations. VFL Heat Loss Data (BTUH) 1 VF1 Heat Loss Data (BTUH) 1 Model Number (VFL Models Only) Notes: Standard Unit Heat Loss (BTU/HR) Unit w/ Hood & Positive Closure Dampers Unit w/ Hood, Positive Closure Dampers & Insulation 2 VFL ,200 16,500 11,000 VFL ,000 17,800 11,900 VFL ,900 19,200 12,800 VFL ,800 20,500 13,700 VFL ,200 28,500 19,000 VFL ,700 30,400 20,300 VFL ,400 32,300 21,500 VFL ,000 47,100 30,700 VFL ,400 49,800 32,500 VFL ,400 66,000 42,600 VFL ,800 69,300 44,800 VFL ,200 72,600 47,000 VFL ,900 84,400 56,200 VFL ,100 87,900 58,600 VFL ,900 91,400 60,900 VFL , ,600 69,000 Model Number ( VF1 Models Only) Standard Unit Heat Loss (Btu/hr) 1. Heat loss is based on 50ºF coil water and 10ºF ambient with a 45 MPH wind. Fan(s) and pump(s) are off. 2. One inch thick PVC nitrite rubber blend thermal insulation with protective paint. Unit w/hood & Positive Closure Dampers Unit w/ Hood, Positive Closure Dampers & Insulation 2 VF ,300 17,100 10,300 VF ,400 18,800 12,000 VF ,900 20,500 12,000 VF ,800 22,200 13,700 VF ,700 25,600 15,400 VF ,200 27,300 15,400 VF ,000 29,100 17,100 VF ,300 30,800 17,100 VF ,950 32,550 18,800 VF ,100 46,100 27,300 VF ,700 49,500 29,100 VF ,300 52,900 29,100 VF ,600 63,200 39,300 VF ,900 66,600 39,300 VF ,200 70,000 43,600 VF ,500 73,400 43,600 VF ,900 80,200 52,900 VF ,200 83,700 52,900 VF ,000 85,600 54,600 VF ,400 83,700 51,200 VF ,100 87,100 51,200 VF ,800 90,500 56,800 VF ,700 97,600 60,000 VF , ,600 60,900 VF , ,900 61,700 VF1-144N , ,300 81,300 VF1-144N , ,700 82,800 VF1-144N , ,400 84,400 VF , ,900 88,600 VF , ,900 90,200 VF , ,200 91,900 VF , , ,600 VF , , ,700 VF , , ,100 VF , , ,900 VF , , ,100 VF , , ,300 VF1-288N , , ,600 VF1-288N , , ,600 VF1288N , , ,800 VF , , ,900 VF , , ,000 VF , , ,300 VF ,142, , ,400 VF ,287, , ,000 VF ,393, , ,500 Closed Circuit Cooling Towers...because temperature matters E54

22 Structural Support Series V The recommended support arrangement for the Series V Closed Circuit Cooling Tower 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 tower. To support a Series V Closed Circuit Cooling Tower in an alternate steel support arrangement, consult your local BAC Representative. All VFL Models VF1-009 thru -048, -072, -096, & -144 VF1-144N, -192, -216 & -288 VF1-288N & -432 Model Number A B Maximum Deflection 3 VFL /4 VFL /2 3/8 VFL /4 1/2 VFL /2 1/2 VFL / /4 1/2 VFL / /2 1/2 VF / /2 3/32 VF / /2 3/16 VF / /4 5/16 VF / /2 3/8 VF / /2 3/8 VF1-072, / /4 3/8 VF1-144N 7 7-5/ /4 1/2 VF / /4 1/2 VF1-288N 7 7-5/ /4 1/2 VF / /2 3/8 VF / /4 1/2 VF / /4 1/2 VF / /4 1/2 Notes: 1. Support beams and anchor bolts are to be selected and installed by others. 2. All supporting steel must be level at the top. 3. Beams must be selected in accordance with accepted structural practice. The maximum allowable deflection of beams under the unit shall be as specified in the table above. 4. All units can be furnished with an optional vibration isolation package, if required, to be installed between the tower and supporting steel. When determining the length of steel beams, allow for the length of vibration isolation rails, as they may be longer than the tower length shown above. 5. If point vibration isolation is used, the isolators must be located under the supporting steel, not between the support steel and the cooling tower. E55 Baltimore Aircoil Company

23 Engineering Specifications See our website at for an electronic copy of product engineering specifications. 1.0 Closed Circuit Cooling Tower 1.1 General: Furnish and install factory assembled, forced draft, centrifugal fan, closed circuit cooling tower(s) with vertical air discharge, conforming in all aspects to the specifications and schedules as shown on the plans. Overall dimensions shall not exceed approximately ft (mm) long x ft (mm) wide x ft (mm) high. The total connected fan horsepower shall not exceed HP (kw). The total connected pump horsepower shall not exceed HP (kw). The closed circuit cooling tower(s) shall be Baltimore Aircoil Company Model(s). 1.2 Thermal Capacity (water as heat transfer fluid): The closed-circuit cooling tower(s) shall be warranted by the manufacturer to cool USGPM (l/s) of water from F ( C) to F ( C) at F ( C) entering wet-bulb temperature. The thermal performance shall be certified by the Cooling Technology Institute in accordance with CTI Certification Standard STD-201. A manufacturer s performance guarantee or performance bond without CTI Certification will not be accepted. 1.3 Wind and Seismic Forces: When supported as recommended, the unit shall be suitable for applications requiring equipment anchorage to resist wind loads up to psf, and an S DS of with an Importance factor of Quality Assurance: The closed circuit 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 its products and services. Closed circuit cooling tower manufacturers that are not ISO-9001:2000 certified shall provide an additional year of warranty to the customer at no additional cost. 2.0 Construction Details 2.1 Tower Structure: The closed circuit cooling tower shall be constructed of heavy-gauge steel utilizing double-brake flanges for maximum strength and rigidity and reliable sealing of water-tight joints. All sheared edges shall be protected with a coating of zinc-rich compound. 2.2 Casing Assembly: The closed circuit cooling tower shall include a coil casing section consisting of a serpentine coil, spray water distribution system, and drift eliminators, as indicated by the manufacturer. PVC drift eliminators shall be removable in easily handled sections. They shall incorporate a minimum of three changes in air direction. 2.3 Coil Assembly: The cooling coil shall be fabricated of continuous lengths of all prime surface steel at the manufacturer s own facility, and hot-dip galvanized after fabrication. The cooling coil shall be pneumatically tested at 375 psig (2,865 kpa). The cooling coil shall be designed for low pressure drop with sloping tubes for free drainage of fluid and shall be ASME B31.5 compliant. Maximum allowable working pressure shall be 300 psig (2,068 kpa) (280 psig (1,931 kpa) for coils supplied with a CRN). ensure complete wetting of the coil at all times. The distribution system shall consist of large-diameter, non-clog, plastic 360 distribution nozzles spaced across the coil face area in Schedule 40 PVC spray branches by snap-in rubber grommets, allowing quick removal of individual nozzles or complete branches for cleaning or flushing. Nozzles shall utilize a two-stage diffusion pattern to provide overlapping, umbrella spray patterns that create multiple intersection points with adjacent nozzles. 2.5 Spray Pump System: The closed circuit cooling tower shall include a close-coupled, bronze-fitted centrifugal pump equipped with a mechanical seal, mounted on the basin and piped to the suction strainer and water distribution system. It shall be installed so that it can be drained when the basin is drained. The pump assembly shall include a metering valve and bleed line to control the bleed rate from the pump discharge to the overflow connection. The pump motor shall be totally enclosed fan cooled (TEFC) type suitable for volts, phase, Hz electrical service. 2.6 Basin Assembly: The combination basin/fan section shall be constructed of heavy-gauge G-235 (Z700 metric) galvanized steel. The basin shall be provided with large area lift out strainers with perforated openings sized smaller than the water distribution nozzles and an anti-vortexing device to prevent air entrainment. The strainer and vortex device shall be constructed of the same material as the cold water basin to prevent dissimilar metal corrosion. Standard accessories shall include waste water bleed line, and corrosion resistant make-up valve with large diameter plastic float arranged for easy adjustment. 3.0 Mechanical Equipment 3.1 Fan System: The fans and motors shall be factory installed at the base of the unit in the dry entering air stream to provide greater reliability and ease of maintenance. The forwardly curved centrifugal fans shall be heavy-duty centrifugal flow type, statically and dynamically balanced prior to shipment. Fan housings shall have curved inlet rings for efficient air entry and rectangular discharge cowls shall extend into the basin to increase fan efficiency and prevent water from entering the fans. 3.2 Bearings: Fans shall be mounted on a steel fan shaft supported by heavy-duty self aligning, relubricatable bearings with cast iron housings and designed for a minimum L 10 life of 40,000 hours (280,000 hours average life). 3.3 Fan Motor/Drive System: Fan motor(s) shall be totally enclosed premium efficient/inverter duty type with a 1.0 service factor, suitable for volts, phase, Hz electrical service. Motor shall be designed per NEMA Standard MG1, Section IV, Part 31. V-belt drives shall be designed for not less than 150% of motor nameplate horsepower. 3.4 Mechanical Warranty: The fan(s), fan shaft(s), bearings, supports, and fan motor(s) shall be warranted against defects in materials and workmanship for a period of five (5) years from date of shipment. Closed Circuit Cooling Towers 2.4 Water Distribution System: Water shall be distributed evenly over the coil at a minimum flow rate of 4.5 GPM/ft 2 (3.1 l/s-m 2 ) to...because temperature matters E56

24 4.0 Sound 4.1 Sound Level: To maintain the quality of the local environment, the maximum sound pressure levels (db) measured 50 ft (15,240 mm) from the closed circuit cooling tower operating at full fan speed shall not exceed the sound levels detailed below. Series V Location db(a) Discharge Air Inlet Cased Face 5.0 Accessories 5.1 Basin Heater(s): The cooling tower cold water basin shall be provided with electric heater(s) to prevent freezing in low ambient conditions. The heater(s) shall be selected to maintain 40 F (4.4 C) pan water temperatures at F( C) ambient. The heater(s) shall be V/ phase/ Hz electric and shall be provided with low water cutout and thermostat. 5.2 Vibration Cutout Switch: Provide mechanical local reset vibration switch. The mechanical vibration cut out switch will be guaranteed to trip at a point so as not to cause damage to the cooling tower. To ensure this, the trip point will be a frequency range of 0 to 3,600 RPM and a trip point of 0.2 to 2.0 g s. 5.3 Heat Loss: The heat loss shall be no greater than BTUH. If the heat loss is greater than the specified limit, positive closure dampers or insulation on the hood/casing provided. E57 Baltimore Aircoil Company

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