EC Controls Vertex
Image credit: Baltimore Aircoil.

Enhanced EC Fan Controls Now Available for Baltimore Aircoil Vertex Evaporative Condenser

The new interface allows remote connectivity and control of the integral pump to maximize unit uptime and reliability.

U.S.-based Baltimore Aircoil Company (BAC), a commercial and industrial HVAC&R equipment and systems manufacturer, has released enhanced controls for the direct-drive EC (electronically commutated) fan system on its Vertex evaporative condenser.

The unit is compatible with medium to large industrial applications requiring capacities between 188 and 1,434TR (661 and 5,043kW). The engineering data indicates the condenser works with systems using ammonia (R717) or synthetic R22 refrigerants.

“For [Vertex] models with the EC Fan System, enhanced controls are now available, including a user interface and integral pump control, which maximizes uptime and reliability,” BAC said.

Additional enhancements: The new user interface provides remote connectivity and control through Modbus and BACnet (building automation and controls network).

  • The enhanced controls simplify the unit’s field installation with single-point wiring for the spray water pump and the EC fan system, BAC said.
  • BAC noted that a remote condenser alarm with status monitoring now ensures the equipment operates as expected.

Vertex design: According to Laura Marshall, PE Applications Lead for Refrigeration at BAC, who spoke at the 2024 IIAR Conference in Orlando this past March, the Vertex Evaporative Condenser is the company’s flagship product.

  • The Vertex product brochure indicates that the forced draft counterflow with the direct-drive EC fan system eliminates components to cut maintenance costs by 50%.
  • BAC says the variable-speed EC fan system can also lower energy usage by 10%.
  • A “unique” basin design reduces the water volume by 30%, which reduces chemical usage, too, said Marshall.

Supporting natural refrigerants: BAC’s heat rejection products support converting from synthetic to natural refrigerant systems for a “positive” environmental impact. “The design of [our] products significantly improves environmental lifetime operating impact by addressing factors such as energy usage, water and chemical usage, refrigerant impact, maintenance, and consumables,” the company said.

  • The Trillium Adiabatic Condenser, serving capacities of up to 376TR (1,322kW) capacities, combines evaporative and dry cooling to “optimize” energy and water consumption, BAC said, with thousands of units installed in transcritical CO2 (R744) and ammonia systems across North America.

Quotable: “In 2018, when we launched the Vertex Evaporative Condenser, we began our innovation process by seeking to understand what our customers really need and want from us,” said Steve Jaczun, Refrigeration Business Leader at BAC. “We heard you wanted more ways to control the unit, and we delivered.”

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