Product Introduction...D85. Benefits...D87. Construction Details...D89. Custom Features & Options...D91. Accessories...D93. Engineering Data...

Series V Product Detail Product Introduction..................................D85 Benefits...............................................D87 Construction Details...................................D89 Custom Features & Options............................D91 Accessories............................................D93 Engineering Data.....................................D95 Structural Support....................................D101 Engineering Specifications............................D103 Engineering Considerations...........................D105 D84

D85 Spotlight

Single Side Air Inlet Sound Sensitive Alternatives Suitable for Indoor or Outdoor Installations Low Profile Available BALTIGUARD PLUS Fan System High Temperature Applications D86

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 - otors and drives of low profile units are adjacent to the casing section for use in height sensitive installations. Low profile models are available in capacities from 16 to 272 nominal tons, which correspond to heights of 5' 1-1/4 and 8' 1-13/16, respectively. High Temperature Applications - A range of construction options are available to accommodate entering water temperatures of up to 170ºF. Low Sound Centrifugal Fan - Centrifugal fans have inherently low sound characteristics. Low Profile Unit Shown in Contrast to a Standard Unit Single Air Inlet - 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 - inimizes the energy consumption of the entire system because it provides lower condensing water temperatures. Owners save money while conserving natural resources and reducing environmental impact. otors - Premium efficient/vfd duty motors are standard. Low Installed Cost Support - All models mount directly on two parallel I-beams and ship complete with motors and drives factory-installed and aligned. odular 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. D87 Baltimore Aircoil Company

Easy aintenance 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 five-year fan drive and motor warranty, these units are suitable for year-round operation. The Water Level Control is Easily Reached from the Access Door Long Service Life External V-Belt Drive System (Shown Here with Panel Removed) aterials of Construction - Various materials are available to meet the corrosion resistance, unit operating life, and budgetary requirements of any project (see page D91 for construction options)....because temperature matters D88

Construction Details Series V 4 8 1 5 Casing Section: VT0 & VT1 7 3 6 2 Lower Section: VT0 & VT1 D89 Baltimore Aircoil Company

1 4 8 3 5 2 VTL 1 Heavy-Duty Construction 5 BACount Fill G-235 (Z700 metric) hot-dip galvanized steel panels 2 Fan Drive System V-belt drive Heavy-duty bearings L 10 40,000 hours (280,000 hour average life) Premium efficient/vfd duty motors are standard Five-year motor and drive warranty 3 Low Sound Centrifugal Fan(s) Quiet operation 4 Water Distribution System Schedule 40 PVC spray header and branches Large orifice, non-clog nozzles Grommetted for easy removal Polyvinyl chloride (PVC) Impervious to rot, decay and biological attack Flame spread rating of 5 per AST E84 6 Strainer Anti-vortexing design to prevent air entrainment 7 Access Door Interior of unit is easily accessible 8 Drift Eliminators Polyvinyl chloride (PVC) Impervious to rot, decay and biological attack Flame spread rating of 5 per AST E84 Assembled in easy to handle sections...because temperature matters D90

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 20 for more details on the materials described above. Fan Drive System 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 on the Series V. Premium efficient cooling tower duty fan motors provide maximum performance for cooling tower service, and are backed by BAC s comprehensive five-year motor and fan drive warranty. Unit with Intake and Discharge Attenuation D91 Baltimore Aircoil Company

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 BALTIGUARD Fan System motor. On some units the standby fan motor can be increased to the size of the main motor for 100% redundancy. BALTIGUARD PLUS T Fan System The BALTIGUARD PLUS T 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 T Fan System refer to page K1. BALTIGUARD PLUS Fan System Low Sound Alternatives The low sound levels generated by Series V 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. The Series V is also available with factory designed, tested, and rated sound attenuation for both the air intake and discharge....because temperature matters D92

Series V Accessories External Access Options (VT0 and VT1 Only) VT0 and VT1 models can be furnished with ladders extending from the top of the unit to the base, as well as safety cages, safety gates and handrail packages to meet OSHA requirements. NOTE: When these access options are employed, the tower must be equipped with steel drift eliminators. 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 NEA 4 enclosure to ensure reliable protection. Additional contacts can be provided on either switch type to activate an alarm. Basin Heaters Vibration Cutout Switch 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 (-29.8 C) Ambient Heaters odel Number No. of Heaters kw per Heater No. of Heaters kw per Heater VTL-016-E thru 039-H 1 2 1 2 VTL-045-H thru 079-K 1 3 1 4 VTL-082-K thru 095-K 1 4 1 5 VTL-103-K thru 137-1 5 1 7 VTL-152- thru 227-O 1 7 1 9 VTL-245-P thru 272-P 1 9 1 12 VT0-12-E thru 57-K 1 2 1 2 VT0-65-J thru 88-L 1 2 1 3 VT0-102-L thru 176-O 1 3 1 5 VT1-N209-P thru N255-P 1 5 1 7 VT1-N301-Q thru N395-R 1 7 1 10 VT1-N418-P thru N510-P 2 5 2 7 VT1-275-P thru 415-R 1 8 1 10 VT1-416-O thru 600-P 1 12 2 7 VT1-550-P thru 830-R 2 8 2 10 VT1-825-P thru 1335-S 3 8 3 10 D93 Baltimore Aircoil Company

Electric Water Level Control Package The electric water level control replaces the standard mechanical makeup valve when 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. Extended Lubrication Lines Extended lubrication lines with grease fittings located outside the fan section are available for lubrication of the fan shaft bearings. High Temperature Fill Optional high temperature fill materials are available to increase the maximum allowable entering water temperature to 170 F (76.7 C). Refer to page D107 for more detailed information. Bottom Screens (VT0 and VT1 Only) Electric Water Level Control Package Wire mesh screens are available factory-installed over the bottom openings to prevent unauthorized access. Basin Sweeper Piping Basin sweeper piping provides an effective method of preventing sediment from collecting in the cold water basin of the tower. A complete system, is provided in the tower basin for connection to side stream filtration equipment (by others). For more information on filtration systems see page 163. Solid Bottom Panels Factory-installed bottom panels are required when intake air is ducted to the unit. Discharge Hoods Discharge hoods reduce the risk of recirculation in tight enclosures by increasing discharge air velocity, and can be used to elevate the tower discharge above adjacent walls to comply with layout guidelines. Discharge Hoods Equipment Controls BAC control panels are specifically designed to work seamlessly with all BAC units and engineered to meet you particular application. For more on BAC Equipment Controls, see section K. Factory utual Approval construction is available as an option....because temperature matters D94

Series V VTL 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 www.baltimoreaircoil.com. VTL 2'-0" WATER INLET WATER OUTLET X 4'-0" A 2'-11 5/8" 2 1/4" ACCESS DOOR 1" PT AKE-UP 2" PT OVERFLOW 4'-11 7/8" H 1" PT AKE-UP 2" PT OVERFLOW 3" 5'-11 5/8" ACCESS DOOR 5'-10 5/8" H Y 1'-8" 11 5/8" 2 1/4" 7 5/8" 8 5/8" 2'-2 7/8" 2" PT DRAIN 2 5/8" 1'-8" 11 5/8" 2'-6 5/8" 3" 3'-8 5/8" 5'-2 7/8" 2" PT DRAIN 2 5/8" 4'-1 1/4" 7'-0 3/4" 10'-11 3/4" VTL-016-E TO 137- VTL-016-E TO 039-H VTL-045-H TO 079-K 4 1/8" 8'-11 7/16" 4 1/8" 11'-11 5/8" 1" PT AKE-UP 2" PT OVERFLOW ACCESS DOOR 5'-10 5/8" H ACCESS DOOR 1" PT AKE-UP 3" PT OVERFLOW 5'-10 5/8" H 1'-8" 11 5/8" 5'-6 7/16" 6'-8 7/16" 2" PT DRAIN 2 5/8" 1'-8" 11 5/8" 8'-6 5/8" 9'-8 5/8" 2" PT DRAIN 2 5/8" 4 1/8" 7'-4 13/16" 4 1/8" 10'-4 7/8" 14'-11 9/16" 17'-11 3/4" VTL-082-K TO 095-K VTL-103-K TO 137- Airflow odel Nominal Weights (lbs) Dimensions Connections 2 Number Tonnage 4 otor HP 3 (CF) Operating 1 Shipping A H X Y Inlet Outlet Overflow VTL-016-E 16 1.5 7,680 1,620 1,100 4 0-3/4 5 1-1/4 4-9/16 7-3/4 3 3 2 VTL-021-F 21 2 8,150 1,660 1,140 4 0-3/4 5 1-1/4 4-9/16 7-3/4 3 3 2 VTL-027-F 27 2 7,370 1,740 1,220 5 7 6 6-1/4 4-9/16 7-3/4 3 3 2 VTL-030-G 30 3 8,270 1,770 1,250 5 7 6 6-1/4 4-9/16 7-3/4 3 3 2 VTL-034-H 34 5 9,420 1,810 1,290 5 7 6 6-1/4 4-9/16 7-3/4 3 3 2 VTL-039-H 39 5 8,860 1,910 1,390 7 1-5/16 8 1-13/16 4-9/16 7-3/4 3 3 2 VTL-045-H 45 5 16,910 2,710 1,650 4 0-3/4 5 1-1/4 4-1/16 7-3/4 4 4 2 VTL-051-G 51 3 13,350 2,810 1,750 5 7 6 6-1/4 4-1/16 7-3/4 4 4 2 VTL-059-H 59 5 15,490 2,830 1,770 5 7 6 6-1/4 4-1/16 7-3/4 4 4 2 VTL-066-J 66 7.5 17,210 2,900 1,840 5 7 6 6-1/4 4-1/16 7-3/4 4 4 2 VTL-072-K 72 10 18,690 2,930 1,870 5 7 6 6-1/4 4-1/16 7-3/4 4 4 2 VTL-079-K 79 10 17,500 3,100 2,040 7 1-5/16 8 1-13/16 4-1/16 7-3/4 4 4 2 VTL-082-K 82 10 22,400 3,810 2,260 5 7 6 6-1/4 5-1/8 8-13/16 6 6 2 VTL-092-L 92 15 24,980 3,940 2,390 5 7 6 6-1/4 5-1/8 8-13/16 6 6 2 VTL-095-K 95 10 21,150 4,070 2,510 7 1-5/16 8 1-11/16 5-1/8 8-13/16 6 6 2 VTL-103-K 103 10 24,990 4,740 2,680 5 7 6 6-1/4 5-1/8 8-13/16 6 6 3 VTL-116-L 116 15 28,200 4,800 2,740 5 7 6 6-1/4 5-1/8 8-13/16 6 6 3 VTL-126-126 20 30,700 4,810 2,750 5 7 6 6-1/4 5-1/8 8-13/16 6 6 3 VTL-137-137 20 29,560 5,120 3,060 7 1-5/16 8 1-13/16 5-1/8 8-13/16 6 6 3 D95 Baltimore Aircoil Company

See page D105 for Engineering Considerations. 5" 8'-11 7/16" 3'-10 5/8" WATER INLET WATER OUTLET X 7'-9 1/4" A 1'-8" 5" 11 5/8" 5" ACCESS DOOR 2" PT AKE-UP 3" PT OVERFLOW 5'-6 7/16" 6'-8 7/16" 7'-4 13/16" 14'-11 9/16" VTL-152- TO 227-O 11'-11 5/8" 2" PT DRAIN 2 5/8" 5'-10 5/8" H Y 7'-10 1/2" VTL-152- TO 272-P ACCESS DOOR 2" PT AKE-UP 3" PT OVERFLOW 5'-10 5/8" H 1'-8" 11 5/8" 8'-6 5/8" 9'-8 5/8" 2" PT DRAIN 2 5/8" 10'-4 7/8" 5" 17'-11 3/4" VTL-245-P TO 272-P Nominal otor Airflow Weights (lbs) Dimensions Connections 2 odel Number Tonnage 4 HP 3 (CF) Operating 1 Shipping A H X Y Inlet Outlet Overflow VTL-152-152 20 45,870 6,580 3,440 4 1-3/4 5 1-1/4 6-1/8 3 11-1/4 8 8 3 VTL-171-L 171 15 39,940 6,820 3,680 5 8 6 6-1/4 6-1/8 3 11-1/4 8 8 3 VTL-185-185 20 43,150 6,960 3,820 5 8 6 6-1/4 6-1/8 3 11-1/4 8 8 3 VTL-198-N 198 25 46,090 7,000 3,860 5 8 6 6-1/4 6-1/8 3 11-1/4 8 8 3 VTL-209-O 209 30 48,630 7,040 3,900 5 8 6 6-1/4 6-1/8 3 11-1/4 8 8 3 VTL-227-O 227 30 46,550 7,470 4,300 7 2-5/16 8 1-13/16 6-1/8 3 11-1/4 8 8 3 VTL-245-P 245 40 58,820 8,970 4,790 5 8 6 6-1/4 6-1/8 3 11-1/4 8 8 3 VTL-272-P 272 40 56,760 9,490 5,310 7 2-5/16 8 1-3/16 6-1/8 3 11-1/4 8 8 3 Notes: 1. Operating weight is for the tower with the water level in the cold water basin at overflow. 2. Unless otherwise indicated, all connections 6" and smaller are PT. Connections 8" and larger are beveled for welding. 3. Fan horsepower is at 0 external static pressure. 4. Nominal tons of cooling represents the capability to cool 3 GP of water from a 95ºF entering water temperature to a 85ºF leaving water temperature at a 78ºF entering wet-bulb temperature....because temperature matters D96

VT0 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 www.baltimoreaircoil.com. Series V H A 3'-8 1/8" 3'-3" 26 1/8" 12 7/8" 8 3/8" 20 3/8" WATER IN 1 AKEUP 2 OVERFLOW WATER OUT 2 DRAIN 3'-4 3/4" 2 1/4" 1 3/4" 3'-0" 1 3/4" 6'-0" 4 1/8" 17 1/4" 30" 3'-11 1/2" 2'-11 3/4" 4" 2 1/4" VT0-12-E TO 28-H 4" 5'-11 3/4" 2 1/4" 4" 8'-11 3/4" 2 1/4" VT0-32-E TO 57-1 3/4" 8'-11 3/4" VT0-65-J TO 88-L VT0-12-E TO 116-11'-11 3/4" 7/8" 4'-8 1/4" 3 1/4" 5'-11 7/8" 4" 11'-11 3/4" 2 1/4" WATER IN H A 1 AKEUP ACCESS 5'-4 1/2" 4'-1 1/2" 3'-1" 3 OVERFLOW WATER OUT 2 DRAIN 1 3/4" 12'-0" VT0-102-L TO 116-23 1/4" 15 3/4" 2 1/2" 5 5/8" 18 1/4" 30 1/2" 3 3/8" 11'-11 1/2" VT0-132-L TO 176-O 4'-8 5/8" VT0-132-L TO 176-O odel Nominal Weights (lbs) Dimensions Connections 2 Number Tonnage 4 otor HP 3 Airflow (CF) Operating 1 Shipping A H B Inlet Outlet Overflow VT0-12-E 12 1.5 4,970 960 790 6 7-7/8 7 6-1/8 12-7/8 3 3 2 VT0-14-F 14 2 5,460 970 800 6 7-7/8 7 6-1/8 12-7/8 3 3 2 VT0-19-G 19 3 6,190 990 820 6 7-7/8 7 6-1/8 12-7/8 3 3 2 VT0-24-G 24 3 5,945 1,050 950 8 1-7/8 9 0-1/8 12-7/8 3 3 2 VT0-28-H 28 5 6,960 1,170 970 8 1-7/8 9 0-1/8 12-7/8 3 3 2 VT0-32-H 32 5 11,820 1,590 1,230 6 7-7/8 7 6-1/8 12-7/8 3 3 2 VT0-41-J 41 7.5 13,435 1,650 1,290 6 7-7/8 7 6-1/8 12-7/8 3 3 2 VT0-52-J 52 7.5 12,960 1,780 1,540 8 1-7/8 9 0-1/8 12-7/8 3 3 2 VT0-57-K 57 10 14,180 1, 790 1,550 8 1-7/8 9 0-1/8 12-7/8 3 3 2 VT0-65-J 65 7.5 16,860 2,580 2,000 8 1-7/8 9 0-1/8 12-7/8 4 4 2 VT0-75-K 75 10 18,435 2,590 2,010 8 1-7/8 9 0-1/8 12-7/8 4 4 2 VT0-78-K 78 10 17,990 2,710 2,130 9 7-1/8 10 6-1/8 12-7/8 4 4 2 VT0-88-L 88 15 20,420 2,770 2,190 9 7-1/8 10 6-1/8 12-7/8 4 4 2 VT0-102-L 102 15 25,060 3,310 2,500 8 1-7/8 9 0-1/8 12-7/8 4 4 2 VT0-107-L 5 107 15 24,460 3,680 2,870 9 7-1/8 10 6-1/8 12-7/8 4 4 2 VT0-116- 5 116 20 26,670 3,740 2,930 9 7-1/8 10 6-1/8 12-7/8 4 4 2 VT0-132-L 132 15 30,600 5,190 3,820 10 9-7/8 11 9-1/8 23-1/4 6 6 3 VT0-145- 145 20 33,670 5,200 3,830 10 9-7/8 11 9-1/8 23-1/4 6 6 3 VT0-155-N 155 25 36,240 5,250 3,880 10 9-7/8 11 9-1/8 23-1/4 6 6 3 VT0-166-N 5 166 25 35,265 5,650 4,280 12 3-7/8 13 3-1/8 23-1/4 6 6 3 VT0-176-O 5 176 30 37,330 5,680 4,310 12 3-7/8 13 3-1/8 23-1/4 6 6 3 D97 Baltimore Aircoil Company

VT1 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 www.baltimoreaircoil.com. 11'-11 3/4" H 6'-8 3/4" 2" PT AKE-UP 3" PT OVERFLOW 4'-2" 33 1/2" WATER OUT 11" 4 3/4" 8 3/4" 7'-9 1/4" ACCESS 37 5/8" 7'-10 3/8" VT1-N209-P TO N255-P 7/8" A 4" 5'-11 7/8" WATER IN 11'-7 3/4" VT1-N209-P TO N255-P 18'-0 1/8" 24'-0 1/2" 9'-0 1/16" 5'-11 7/8" 5'-11 7/8" WATER IN WATER IN WATER IN 4" 17'-8 1/8" 4" 23'-8 1/2" VT1-N301-Q TO N395-R VT1-N418-P TO N510-P Weights (lbs) Dimensions Connections 2 odel Number Nominal Tonnage 4 otor HP 3 Airflow (CF) Operating 1 Shipping Heaviest Section A H B Inlet Outlet VT1-N209-P 209 40 66,300 9,180 5,350 3,300 10 7-5/8 11 5-1/8 12 8 8 VT1-N220-O 220 30 53,100 9,490 5,660 3,110 12 4-5/8 13 2-1/8 12 8 8 VT1-N240-P 240 40 57,950 9,680 5,850 3,300 12 4-5/8 13 2-1/8 12 8 8 VT1-N255-P 255 40 55,900 10,380 6,550 3,300 13 9-3/8 14 6-7/8 12 8 8 VT1-N301-Q 301 50 86,150 13,380 7,530 4,590 10 7-5/8 11 3-3/8 12 8 8 VT1-N325-P 325 40 77,450 14,110 8,260 4,550 12 4-5/8 13 2-1/8 12 8 8 VT1-N346-Q 346 50 83,050 14,150 8,300 4,590 12 4-5/8 13 2-1/8 12 8 8 VT1-N370-Q 5 370 50 80,150 15,130 9,280 4,690 13 9-3/8 14 6-7/8 12 8 8 VT1-N395-R 395 60 84,750 15,250 9,400 4,710 13 9-3/8 14 6-7/8 12 8 8 VT1-N418-P 418 (2) 40 120,600 18,490 10,680 6,580 10 7-5/8 11 3-3/8 11 (2) 8 10 VT1-N440-O 440 (2) 30 106,200 19,110 11,300 6,200 12 4-5/8 13 2-1/8 11 (2) 8 10 VT1-N480-P 480 (2) 40 115,900 19,490 11,680 6,580 12 4-5/8 13 2-1/8 11 (2) 8 10 VT1-N510-P 510 (2) 40 111,800 20,890 13,080 6,580 13 9-3/8 14 6-7/8 11 (2) 8 10 Notes: 1. Operating weight is for the tower with the water level in the cold water basin at overflow. 2. Unless otherwise indicated, all connections 6" and smaller are PT. Connections 8" and larger are beveled for welding. 3. Fan horsepower is at 0 external static pressure. 4. Nominal tons of cooling represents 3 GP of water from a 95ºF to 85ºF at a 78ºF entering wet-bulb temperature. 5. Unitʼs casing section is the heaviest section....because temperature matters D98

See page D105 for Engineering Considerations. 11'-8 3/4" 7/8" 5'-11 7/8" 24'-0 1/2" 5'-11 7/8" H 8'-4" 2" PT AKE-UP ACCESS 3" PT OVERFLOW WATER OUT 2" PT DRAIN 3'-4 7/16" 29 1/16" X 6 5/8" 3 3/8" 4 3/4" 27 1/8" 5'-5 1/4" 11'-10" VT1-550-P TO 1355-P 5'-11 7/8" A 36'-1 1/4" 4" 18'-0 5/8" 8" WATER IN 23'-8 1/2" VT1-550-P TO 830-R 5'-11 7/8" 8" WATER IN 8" WATER IN 8" WATER IN 8" WATER IN 4" 35'-9 1/4" VT1-825-P TO 1355-S 4" Weights (lbs) Dimensions Connections odel Number Nominal Tonnage 4 otor HP 3 Airflow (CF) Operating 1 Shipping Heaviest Section A H X Inlet Outlet ake-up VT1-550-P 550 (2) 40 165,060 30,590 16,020 10,220 12 2-7/8 12 10-5/8 12-1/2 (2) 8 12 2 VT1-680-P 680 (2) 40 163,100 32,150 17,580 10,220 13 11-7/8 14 9-3/8 12-1/2 (2) 8 12 2 VT1-750-P 750 (2) 40 158,600 34,090 19,520 10,220 15 4-5/8 16 2-1/8 12-1/2 (2) 8 12 2 VT1-800-Q 800 (2) 50 170,300 34,170 19,600 10,300 15 4-5/8 16 2-1/8 12-1/2 (2) 8 12 2 VT1-830-R 830 (2) 60 180,500 34,410 19,840 10,540 15 4-5/8 16 2-1/8 12-1/2 (2) 8 12 2 VT1-825-P 825 (3) 40 247,590 45,980 24,000 15,300 12 2-7/8 12 10-5/8 13-1/2 (3) 8 (2) 10 3 VT1-921-O 921 (3) 30 223,050 47,750 25,770 14,730 13 11-7/8 14 9-3/8 13-1/2 (3) 8 (2) 10 3 VT1-1020-P 1020 (3) 40 244,650 48,320 26,340 15,300 13 11-7/8 14 9-3/8 13-1/2 (3) 8 (2) 10 3 VT1-1125-P 1125 (3) 40 237,900 51,230 29,250 15,300 15 4-5/8 16 2-1/8 13-1/2 (3) 8 (2) 10 3 VT1-1200-Q 1200 (3) 50 255,450 51,350 29,370 15,420 15 4-5/8 16 2-1/8 13-1/2 (3) 8 (2) 10 3 VT1-1245-R 1245 (3) 60 270,750 51,710 29,730 15,780 15 4-5/8 16 2-1/8 13-1/2 (3) 8 (2) 10 3 VT1-1335-S 1335 (3) 75 290,550 51,770 29,790 15,840 15 4-5/8 16 2-1/8 13-1/2 (3) 8 (2) 10 3 Notes: 1. Operating weight is for tower with water level in the cold water basin at overflow. 2. Unless otherwise indicated, all connections 6" and smaller are PT. Connections 8" and larger are beveled for welding. 3. Fan horsepower is at 0 external static pressure. 4. Fans on models VT1-416 through 600 must be cycled simultaneously for capacity control. For additional steps of control beyond on/off operation, a variable frequency drive, the BALTIGUARD Fan System, or two-speed motors are recommended. 5. Nominal tons of cooling represents 3 GP of water from a 95ºF to 85ºF at a 78ºF entering wet-bulb temperature....because temperature matters D100

Structural Support Series V The recommended support arrangement for the Series V 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 Cooling Tower in an alternate steel support arrangement, consult your local BAC Representative. B 1 1/8" (4) 7/8 OUNTING HOLES SUPPORT BEAS FAN SIDE 1 1/8" 3 1/8" OUTLINE OF UNIT A ALL VTL ODELS OUTLINE OF UNIT A AIR INLET SIDE B (4) 7/8 OUNTING HOLES ALL VT0 ODELS & VT1-N209-P THRU N255-P & VT1-275-P THRU 415-R OUTLINE OF UNIT 7'-7 5/8" 4" AIR INLET SIDE (8) 7/8" DIAETER OUNTING HOLES 8'-1 7/8" B 8'-1 7/8" ALL VT0 ODELS & VT1-N301-Q THRU N510-P & VT1-416-P THRU 830-R D101 Baltimore Aircoil Company

OUTLINE OF UNIT A 10'-7 1/2" 17 1/4" AIR INLET SIDE B 10'-7 1/2" odel Number A B aximum Deflection 3 VTL-016-E thru 039-H 3 11 4 6 1/4 VTL-045-H thru 079-K 3 11 7 11-1/2 3/8 (8) 7/8" DIAETER OUNTING HOLES VTL-082-K thru 095-K 3 11 10 11-1/4 1/2 VTL-103-K thru 137-3 11 13 11-1/2 1/2 VTL-152- thru 227-O 7 8-1/4 10 11-1/4 1/2 VTL-245-P thru 272-P 7 8-1/4 13 11-1/2 1/2 VT0-12-E thru 28-H 3 9-3/8 2 5-1/2 3/32 VT0-32-H thru 57-K 3 9-3/8 5 5-1/2 3/16 VT0-65-J thru 88-L 3 9-3/8 8 5-1/4 5/16 VT0-102-L thru 116-3 9-3/8 11 5-1/2 3/8 VT0-132-L thru 176-O 4 6-1/4 11 5-1/2 3/8 VT1-N209-P thru N255-P 7 7-5/8 10 7-1/2 3/8 VT1-N301-Q thru N395-R 7 7-5/8 16 7-3/4 1/2 VT1-N418-P thru N510-P 7 7-5/8 22 8-1/4 1/2 VT1-275-P thru 415-R 11 7-1/4 10 7-1/2 3/8 VT1-416-O thru 600-P 11 7-1/4 16 7-3/4 1/2 VT1-550-P thru 830-R 11 7-1/4 22 8-1/4 1/2 VT1-825-P thru 1335-S 11 7-1/4 34 9 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 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....because temperature matters D102

Engineering Specifications Series V See our website at www.baltimoreaircoil.com for an electronic copy of product engineering specifications. 1.0 Cooling Tower 1.1 General: Furnish and install factory-assembled, forced-draft, centrifugal fan, counterflow 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 ft (mm) long X ft (mm) wide X ft (mm) high. The total connected fan horsepower shall not exceed HP (kw). The cooling tower(s) shall be Baltimore Aircoil odel. 1.2 Thermal Capacity: The cooling tower(s) shall be warranted by the manufacturer to cool USGP (l/s) of water from F ( C) to F ( C) at F ( C) entering wet-bulb temperature. Additionally, the thermal performance shall be certified by the Cooling Technology Institute in accordance with CTI Certification Standard STD-201. Lacking such certification, a field acceptance test shall be conducted within the warranty period in accordance with CTI Acceptance Test Code ATC-105, by the Cooling Technology Institute or other qualified independent third party testing agency. A manufacturer s performance guarantee or performance bond without CTI Certification or independent field thermal performance test shall not be accepted. 1.3 Corrosion Resistant Construction: Unless otherwise noted in this specification, all steel panels and structural members shall be constructed of heavy-gauge G-235 (Z700 metric) hot-dip galvanized steel. 1.4 Quality Assurance: The manufacturer shall have a anagement System certified by an accredited registrar as complying with the requirements of ISO-9001 to ensure consistent quality of products and services. anufacturers that are not ISO-9001 certified shall not be acceptable. 2.0 Construction Details 2.1 Structure (VT0/1 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 fill shall be removable from the basin 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 airstream to ensure reliable operation and ease of maintenance. 2.1 Structure (VTL 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 unit shall be of unitary design to minimize rigging requirements. The fan(s) and fan drive system, including the fan motor, shall be factory mounted and aligned and located in the dry entering airstream to ensure reliable operation and ease of maintenance. 2.2 Fill: The fill shall be formed from self-extinguishing (per UL94 HB and UL94 V-0 testing) polyvinyl chloride (PVC) having a flame spread rating of 5 per AST E84 and shall be impervious to rot, decay, and fungus or biological attack. The fill shall be manufactured and performance tested by the cooling tower manufacturer to assure single source responsibility and control of the final product. 2.3 Water Distribution System: Water shall be distributed evenly over the fill by a water distribution system consisting of a header and spray branches of Schedule 40 PVC 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. 2.4 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-votexing 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 corrosion resistant make-up valve with large diameter polystyrene filled plastic float for easy adjustment of the operating water level. 3.0 echanical Equipment 3.1 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 L 10 life of 40,000 hours (280,000 Hr. Avg. Life). 3.3 Fan Drive: The fan(s) shall be driven by matched V-belts with taper lock sheaves designed for not less than 150% of the motor nameplate horsepower. otor 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 otor: Furnish HP, RP Totally Enclosed, squirrel cage, ball bearing type fan motors suitable for outdoor service. Fan motor(s) shall be premium efficient/ inverter-duty type designed per NEA Standard G1, Section IV, and Part 31 suitable for volt, hertz, and phase electrical service. 3.5 echanical Equipment Warranty: The fan(s), fan shaft(s), bearings, mechanical equipment support and fan motor shall be warranted against defects in materials and workmanship for a period of five (5) years from date of shipment. 4.0 Drift Eliminators 4.1 Drift Eliminators: Eliminators shall be constructed of specially formulated PVC and be removable in easily handled sections. They shall have a minimum of three changes in air direction. 5.0 Access 5.1 Basin Access: Access doors shall be provided for easy access to the make-up water assembly and suction strainer for routine maintenance. D103 Baltimore Aircoil Company

6.0 Sound 6.1 Sound Level: To maintain the quality of the local environment, the maximum sound pressure levels (db) measured 50 ft 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 Cased Face Blank Off 7.0 Accessories 7.1 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) basin water temperatures at F ambient. The heater(s) shall be V/ phase/ Hz electric and shall be provided with low water cutout and thermostat. 7.2 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 RP and a trip point of 0.2 to 2.0 g s....because temperature matters D104