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Materials of Construction

  • Standard Construction G-235 mill galvanized steel is the heaviest commercially available galvanized steel, universally recognized for its strength and corrosion resistance. To assure long life, G-235 mill galvanized steel panels and structural members are used as the standard material of construction. The standard construction has been seismically verified by shake table testing in an independent laboratory up to an SDS of 2.40g and can withstand wind loads of up to 167 psf, proving its construction is designed for extreme durability. With proper maintenance and water treatment, G-235 galvanized steel will provide an excellent service life under the operating conditions normally encountered in refrigeration applications.
  • TriArmor® Corrosion Protection System (Option) — The TriArmor® Corrosion Protection System consists of heavy gauge G-235 galvanized steel panels fully encapsulated by a thermosetting hybrid polymer and further protected by a polyurethane barrier applied to all submerged surfaces of the cold water basin. The triple layers of protection form a completely seamless cold water basin for the most leak resistant and durable basin in the industry. Other components within the basin, such as the strainer and submerged structural supports, will be constructed of Type 304 Stainless Steel. The TriArmor®Corrosion Protection System was specifically designed for evaporative cooling applications and released in 2006 after a decade of extensive R&D and field testing. To date, there are over 1,000 successful installations in North America. Every basin is leak tested at the factory and warranted against leaks and corrosion for five years.

    TriArmor® Corrosion Protection System Triple Layer Protection of the Cold Water Basin

    TriArmor® Corrosion Protection System Triple Layer Protection of the Basin

  • EVERTOUGH™ Construction (Option) — EVERTOUGH™ Construction combines the most corrosion resistant
    materials to provide the best value in corrosion protection for most water chemistries. EVERTOUGH™ Construction is backed by a comprehensive 5-year warranty which covers ALL components from the fan to the basin, including the motor. The following materials are used in EVERTOUGH™ Construction:
    • The basin is constructed with the TriArmor® Corrosion Protection System. The basin is leak tested at the factory and warranted against leaks and corrosion for 5 years.
    • Designated steel components above the basin are constructed of heavy-gauge G-235 galvanized steel and further protected with a thermosetting hybrid polymer.
    • The distribution system is non-corrosive Schedule 40 PVC.
    • Other components within the basin, such as the strainer and submerged structural supports, will be constructed of Type 304 stainless steel.
  • Thermosetting Hybrid Polymer (Option) A thermosetting hybrid polymer, used to extend equipment life, is applied to select G-235 mill galvanized steel components of the unit. The polymerized coating is baked onto the G-235 mill galvanized steel and creates a barrier to the already corrosion resistant galvanized steel. The thermosetting hybrid polymer has been tested to withstand 6,000 hours in a 5% salt spray without blistering, chipping, or loosing adhesion.
  • Stainless Steel (Option) Several Type 304 stainless steel material of construction options are available.
    • Welded Type 304 Stainless Steel Basin — All steel panels and structural members of the basin are constructed from Type 304 stainless steel. Seams between panels inside the basin are welded, providing an advantage over bolted stainless steel basins for minimizing susceptibility to leaks at basin seams. The basin is leak tested at the factory and welded seams are provided with a 5-year, leak-proof warranty.
    • Type 304 All Stainless Steel Construction Steel panels and structural elements are constructed of Type
      304 stainless steel. Seams between panels inside the basin are welded. The basin is leak tested at the factory and welded seams are provided with a 5-year leak-proof warranty.

Coil Configurations

  • Standard Serpentine Coil —The standard coil is constructed of continuous lengths of all prime surface steel. The coil is hot-dip galvanized after fabrication (HDGAF) to apply a thick, zinc corrosion barrier over the entire exterior surface of the coil. The coil is designed for low pressure drop with sloping tubes for free drainage of fluid. Each coil has a maximum allowable working pressure of 300 psig (2,068 kPa) and is fabricated per ASME B31.5 standards to ensure the highest quality and integrity.

    Standard Serpentine Coil

    Note: A Canadian Registration Number (CRN) is required for all pressure vessels over 15 psig entering Canada. The CRN identifies that the design of a boiler, pressure vessel, or fitting has been accepted and registered for use in Canada. CRN is available for all BAC Dual and TriCoil configurations shipping into Canada.

  • Stainless Steel Coil (Option) — 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 has a maximum allowable working pressure of 300 psig (2,068 kPa) and is fabricated per ASME B31.5 standards to ensure the highest quality and integrity.
  • ASME “U” Stamp Coil (Option) The ASME coils are often requested for heavy industrial or process applications. This serpentine 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 has a maximum allowable working pressure of 330 psig (2,275 kPa).
  • Extended Surface Coil (Option) — Coils are available with up to all rows finned at 5 fins per inch for seasonal wet/dry operation. The fins increase the surface area of the coil, therefore increasing the heat transfer capability. The coil is hot-dip galvanized after fabrication (HDGAF) to apply a thick, zinc corrosion barrier over the entire exterior surface of the coil and fins. BAC coils are designed for low pressure drops, and to be completely drainable with sloping tubes for free drainage of fluid. Each coil has a maximum allowable working pressure of 300 psig (2,068 kPa) and is fabricated per ASME B31.5 standards to ensure the highest quality and complete integrity.
  • Multiple Circuit Coils/Auxiliary Cooling Circuit (Option) — Split coil configurations are available to allow separate process fluid or refrigerant loops through the same unit. Separate loops may be needed for multiple applications requiring different temperature processes or multiple types of process fluids or refrigerants. Multiple refrigerant circuit coils are generally required on halocarbon refrigerant systems, where it is common practice to maintain individual compressor systems. The quantity of circuits, capacity per circuit, and desired connection size and type should be specified when requesting this option.
  • Copper Sweat Fittings (Option) Factory installed copper sweat fittings are available to simplify field piping.

Drive System Options

  • Standard BALTIDRIVE® Power Train The BALTIDRIVE® Power Train utilizes special corrosion resistant materials of construction and state-of-the-art technology to ensure ease of maintenance and reliable year-round performance. This BAC engineered drive system consists of a specially designed powerband and two cast aluminum sheaves located at minimal shaft centerline distances to maximize belt life. When compared to a gear drive system, this specially engineered belt drive system provides many advantages. The BALTIDRIVE® Power Train requires only periodic inspection of components and belt tensioning, which is simple with a single nut adjustment and requires less downtime. Only fan bearing lubrication is required for routine maintenance. Belt drive systems also have the added advantage of being suitable for variable frequency drive (VFD) applications without requiring expensive optional accessories.
  • Independent Fan Operation (Option) Models CXVB-X-0809-X, CXVB-X-0812-X, CXVB-X-1212-X are
    provided with one motor driving two fans as standard. The CXVB-X-0818-X and CXVB-X-1218-X are provided with two fan motors driving three fans as standard. The independent fan option consists of one fan motor and drive assembly for each fan to allow independent operation, adding an additional step of fan cycling and capacity control. This option ensures redundancy for the fan and motor system.
  • BALTIGUARD™ Fan System (Option) — The BALTIGUARD™ Fan System consists of two standard single-speed
    fan motor 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 provides the reserve capability of a standby motor in the event of failure. As a minimum, approximately 70% capacity will be available from the low horsepower motor (pony), even on a design wet-bulb day. Controls and wiring are the same as those required for
    a two-speed, two-winding motor. Redundant motors are available by increasing the size of the standby fan motor of the BALTIGUARD™ Fan System to the size of the main motor. This provides 100% motor redundancy and the greatest level of reliability.
  • BALTIGUARD PLUS™ Fan System (Option) — The BALTIGUARD PLUS™ Fan System builds on the advantages
    of the BALTIGUARD™ Fan System by adding a variable frequency drive (VFD) to either the pony or the main motor, depending on system requirements. This offers the benefits of additional capacity control and energy savings, along with the redundancy offered by the BALTIGUARD™ Fan System. Alternatively, a VFD can be added to both the pony and main motor for complete capacity control and redundancy under any load.

Water Distribution System

  • Standard Spray Water Pump The CXVB water distribution system comes standard with an integral spray water pump sized to distribute the recirculating water over the coil, maximizing capacity. The patented BAC 360™ Spray Nozzles are non-clog, ensure even flow over the coil area, and are simple to remove for maintenance. Parallel flow of air and spray water allow for inspection and access to the top of the coils during operation.

    Standard Spray Water Pump

  • Redundant Pumps (Option) — An optional secondary spray pump is available.  A manual valve will be supplied at each pump discharge to allow for manual switch-over for continued equipment operation until maintenance can be performed.

Fill

  • Standard Fill — Standard fill can be used in applications with spray water temperature up to 130°F (54.4°C). The fill and drift eliminators are formed from self-extinguishing PVC having a flame spread rating of 5 per ASTM E84.
  • High Temperature Fill (Option) An optional high temperature fill material is available which increases the maximum allowable spray water temperature to 140°F (60°C). The online selection program automatically determines if high temperature fill is necessary based on the design requirements.

Shipping and Rigging

  • Knockdown Units (Option) — Knockdown units are available for jobs where access to the condenser location is limited by elevators, doorways, or similar obstacles, where lifting methods impose very strict weight limits, or where the shipping cost of a fully assembled unit is excessive. All materials of construction and design features are the same as those of a factory assembled unit. Welded Type 304 stainless steel basins and TriArmor® Corrosion Protection System basins are excluded from knockdown due to the need for in-plant assembly.

Sound Options

  • Standard Fan The fan provided for all CXVB Evaporative Condensers is selected to optimize low sound levels and maximize thermal performance.
  • Low Sound Fan (Option) The Low Sound Fan option reduces sound up to 8 dBA. Adding a high solidity fan decreases fan speeds, which proportionally decreases sound levels.

    Low Sound Fan

  • Whisper Quiet Fan (Option) — For the most extreme sound limitations, BAC’s Whisper Quiet Fan reduces sound up to 14 dBA.
  • Sound Attenuation (Option) — Factory designed, tested, and rated sound attenuation options are available for both the air intake and discharge. Consult your local BAC Representative regarding available options.
  • Single Side Air Intake Single-side air intake units can be placed close to solid walls, reducing the size of enclosures and allowing for more profitable use of premium space. Also, the panel opposite the air intake, called the blankoff panel, is inherently quiet. Positioning the blankoff panel towards the sound sensitive direction insulates sensitive areas from higher sound levels.

Air Intake Options

  • Combined Inlet Shields The Combined Inlet Shields’ (CIS) bent flow path blocks sunlight from the basin and fill section and acts as a screen to prevent debris from entering the unit. These benefits result in a significant reduction in algae growth, debris accumulation, and scale build-up. CIS are constructed from corrosion and UV-resistant PVC and are installed in easy to handle sections that are separate from the fill section to facilitate removal, inspection, and replacement. The use of CIS results in lower maintenance costs and ease of maintenance over the life of the unit.

    Combined Inlet Shields

  • Suncreens (Option) The corrosion resistant SunScreens are mounted above the spray distribution system and help to smooth the airflow into the coils for optimum thermal performance. They also prevent strong winds from carrying spray water out of the unit, and block sunlight in locations previously susceptible to algae growth. SunScreens are constructed in easy to handle sections to facilitate removal, inspection, and replacement.
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