Greenheck’s new Model APD plenum fan features a direct drive fan with the wheel connected to the motor shaft. With no fan shaft bearings or belts to maintain, the company says its Model APD eliminates the cost and maintenance associated with traditional belt drive plenum fans.
SPX Cooling Technologies announced an expansion of its Marley MD line of factory-assembled counterflow cooling towers. The company says the towers require less plan area and offer greater site placement flexibility. New to the MD line is model 5017, a 12-ft by 14-ft box size offering 324 to 554 nominal tons of cooling per cell.
Bosch Thermotechnology Corp. has developed a new line of tankless gas condensing water heaters. The Bosch Greentherm 9000 Series offers nine models for high-efficiency domestic hot water in residential or commercial applications.
Lochinvar LLC announced that its Smart Touch™ control has been added as a standard feature on Power-Fin® boilers and water heaters from 500,000 to 2,000,000 Btuh. This enhancement comes after the technology was announced specifically for the larger boiler models. Now, the entire Power-Fin product family has this control.
Johnson Controls is introducing Verasys™, a plug-and-play controls system that integrates HVACR equipment and controls. According to the company, Verasys offers customers in the light commercial market a flexible, one-source procurement solution with advanced technology already embedded for the self-discovery of Smart Equipment™.
SWEP’s new 250AS model is specifically developed for high-efficiency air- or water-cooled reversible chiller applications. Large ports and asymmetric plate design enable an effective operating range of 80-250 kW (23-71 tons).
Danfoss has introduced the new Danfoss Turbocor® TT700 compressor — expanding to a larger capacity its existing range of Turbocor® TT series compressors. Designed for water-cooled chiller applications, the new TT700 compressors are oil-free, variable-speed, magnetic bearing centrifugal compressors that provide full- and part-load energy efficiency. The company claims the compressors also feature a small footprint, are light weight, and offer low vibration, very low sound, intelligent controls, and soft starting characteristics.
International Environmental Corporation (IEC) introduced its new Horizontal and Vertical (HDY/VDY) Direct Drive Blower Coil Series. Accommodating a variety of applications, these models are equipped with a direct-drive EC motor, eliminating belt-drive slips and other concerns associated with belt-drive systems. The company says the new line offers an alternative that is more reliable and efficient, resulting in increased energy savings, an extended motor life, easier installation, and less maintenance.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.