Compass Series

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1.Product Overview 2.Product Advantage 3.Custom Features

BAC is a global leader in cooling technologies and solutions.
With over 80 years of experience in R&D, manufacturing, sales, and service, and the collective expertise of a world-class team, BAC proudly introduces the Compass Series Cooling Tower—designed to meet growing demands for energy efficiency, water conservation, and ease of maintenance.

>?CTI-certified for thermal performance

>?Power consumption as low as 0.0167 kW?h/m3

>?Drift rate as low as 0.00091%

>?Over 90% of materials are recyclable

?>?Noise levels as low as 58 dB(A)

Green and Sustainable

>Green and Safe

　>Over 90% of materials used are recyclable

　>Frame & panels are constructed with industry-grade G235 galvanized steel

　>Utilizes environmentally friendly BUTYL sealant, ensuring installer safety

　>Complies with OSHA standards

>Energy and Water Efficiency

　>All models meet or exceed energy efficiency requirements of ASHRAE 90.1

　>Certified for national energy conservation and water-saving standards

　>Patented HELIX 3i fill reducing overall energy consumption to as low as 0.0167 kW·h/m3

　>Integrated fill and triple drift eliminators effectively retain moisture-laden air within the tower, drift loss as low as 0.00091%

　>Large cold water basin stores more circulating water, preventing overflow during system shutdown and reducing water waste

>Low Sound

　>High-efficiency aluminum alloy fans reduce noise levels to as low as 58 dB(A)

　>Industry-leading selection software provides accurate and reliable sound power and sound pressure data

>100% Thermal Performance

　>All Compass series products are CTI-certified, ensuring 100% compliance with thermal performance requirements.

　>Certified through CTI’s rigorous testing program and annual random inspections, guaranteeing that every unit meets its design thermal performance

>Reliable Operation

　>G235 galvanized steel frame and panels withstand up to Category 12 winds and seismic level 8

　>Unique waterproof bearing design tailored for cooling tower environments

　>Aluminum alloy fan blades offer longer lifespan and greater reliability than conventional FRP fans

　>Rust-resistant aluminum alloy sheaves reduce belt wear

　>Motors specifically designed for cooling tower duty ensure reliable drive system operation

>Optional water distribution covers prevent debris entry into the hot water basin, protecting system integrity

>Cold water basin features minimal seams with steel support beneath each seam to minimize leakage risks

　>Extra-large cold water basin with anti-vortex outlet screen prevents pump cavitation and ensures system safety

>Easy Maintenance

　>Direct internal access for crossflow tower maintenance

　>Split bearing design allows for easy lubrication and replacement

　>Lightweight aluminum alloy sheaves with taper-lock bushings for easy installation and removal

　>Twist-lock spray nozzles are easy to remove, reusable, and maintenance-friendly

　>Sloped cold water basin eliminates stagnant zones, inhibiting microbial growth

　>Fill suspended above sloped basin allows dirt and debris to be easily flushed away

　>Optional hot water basin covers support up to 90.7kg of concentrated load, facilitating equipment access

　>External ladders, safety cages, and railings allow safe access to the water distribution system

　>Big access doors and internal walkways enable easy entry and maintenance within the tower

>Easy Installation

　>Cold water basin features minimal seams and uses environmentally friendly BUTYL sealant, eliminating the need for on-site fiberglass hand-layup and saving installation time

　>All models can be directly installed on parallel steel beams through the side panels for simplified setup

　>Optional factory-assembled units ensure installation quality and significantly reduce on-site labor

>Structural Material

BAC utilizes G235 galvanized steel for the structure and panels, ensuring extended service life of the cooling tower. The equipment features a reinforced frame structure with superior strength, designed to meet a seismic design rating of SDS 1.3g and a wind load rating of 66 psf.

Drive System

The fan drive system delivers the necessary airflow to expel heat into the atmosphere. All BAC drive systems are equipped with high-efficiency motors specifically designed for the hot and humid operating conditions of cooling towers. These motors feature permanently lubricated bearings, significantly reducing maintenance requirements and costs.

>Optional: Vibration Cutout Switch

BAC offers a mechanical vibration cutout switch to protect equipment from potential damage caused by excessive system vibration. The switch is housed in a NEMA 4-rated enclosure for enhanced durability and protection.

>Optional: Extended Lubrication Lines

Extended lubrication lines with grease fittings are used to lubricate the fan shaft bearings. The grease fittings are located inside the fan section near the access door.

>Big cold water basin

The cold water basin collects water from both the cooling tower and system piping during shutdown, while also providing the required static head for the circulation pump.
BAC’s sloped cold water basin effectively eliminates stagnant water zones during operation, helping to inhibit microbial growth.

>標配機械式水位控制組件

機械式補水閥需要在濕熱環境下持續運行。考慮到嚴苛的運行環境，補水閥運行原理必須簡單，而且運行壽命要長。所有BAC 冷卻塔設備標配高品質機械式水位控制件，運行可靠，維護簡便。

>Optional: Side Outlet Sump Tank (Optional) The recessed side outlet sump tank sits below the cooling tower base, allowing for easier field installation. This option simplifies piping layout and reduces on-site installation time and costs. The outlet is designed with an ASME 150 flat-face flange connection.

>Basin Heater（Optional）

When the cooling tower is idle for extended periods in subfreezing conditions, freeze protection measures are required. The basin heater maintains water temperature at 4.4°C (40°F), providing a cost-effective and reliable method to protect the cold water basin.

>Heater Parameters

>Multiple Unit Installation (Optional)

When installing multiple cooling towers in parallel, special measures must be taken to ensure balanced water levels in each cold water basin. Without proper water level balancing, one unit may overflow while another continues to receive make-up water, resulting in unnecessary water waste.

>Optional: Equalizer Box

The cold water basin equalizer box is designed for multi-cell configurations and effectively balances the operating water level across all connected units.

>Optional: Equalizer Pipe

The cold water basin equalizer pipe can be used in place of the equalizer box to balance the operating water levels across multiple connected units. It can also serve as an isolation mechanism between units, allowing for continued system operation during winter or routine maintenance.

>Water Distribution System

The Compass Series utilizes a low-head gravity water distribution system. Large-diameter, clog-resistant nozzles significantly reduce pump energy consumption compared to pressurized distribution systems.

>Fills

BAC’s patented HELIX 3i fill is made of PVC and features an integrated design that combines drift eliminators, air inlet louvers, and fill. This optimized configuration delivers excellent thermal performance and water-saving efficiency.

>Optional: Water Distribution Cover

The optional water distribution system cover prevents debris from entering the hot water basin, ensuring reliable system operation and effectively reducing noise.

>Shipping and Rigging

The Compass Series cooling towers offer two factory shipping options to meet diverse customer requirements.

>CKD

　>Wide access doors and internal walkways allow easy entry into the unit for maintenance.

>Easy Installation

Knockdown shipment is suitable for various site conditions, offering lower transportation costs and simplified installation. All components and assembled units meet the same thermal performance standards as factory-assembled units.

>Optional: Factory-Assembled Shipment

BAC units can be fully assembled at the factory and shipped to the job site, ensuring product quality while minimizing on-site installation work. During the design phase, BAC takes measures to reduce the tools and time required for lifting and rigging.

>Rigging Guidance

Follow the lifting guidelines provided to reduce installation time—especially important for multi-cell installations.

>Low Sound Options

Noise control has become an increasingly important design criterion in cooling tower projects. BAC offers a wide range of sound-reduction options to meet various acoustic requirements and provide cost-effective, low-noise cooling solutions.

>Standard Fans

All Compass Series cooling towers are equipped with fans optimized for low-noise operation without compromising thermal performance.

>Low Sound Fans

Optional quiet fan configurations can reduce noise by up to 9 dB. Fans with steep blade angles operate at lower speeds to achieve significant sound attenuation.
BAC cooling towers equipped with quiet fans are CTI-certified for thermal performance.

>Inlet options

During operation, airborne debris can be drawn into the cooling tower along with the intake air, contaminating the circulating water. The Compass Series offers optional CIS that prevent debris from entering the system without restricting airflow. This helps reduce maintenance requirements and ensures consistent thermal performance.

>Combined Inlet Shields(Optional)

block direct sunlight from reaching the cold water basin and fill media, while also preventing debris from entering the tower. This helps inhibit algae growth and scale formation.
Constructed from UV- and corrosion-resistant PVC, these louvers are CTI-certified and designed for easy installation, inspection, and replacement—reducing maintenance costs and extending the service life of the cooling tower.