Nortek Global HVAC introduced a new line of highly-configurable Reznor® light commercial packaged rooftops. They are available in 6, 7.5 and 10 tons. The company says the rooftop units can be configured at the factory so consultant engineers or design-build contractors can get the exact spec unit they need delivered to the job site. With over 35 options per tonnage size, there are over 750,000 unit configurations available. A quick-ship option is available out of the factory in Dyersburg, Tenn.
Armstrong Fluid Technology has unveiled the new Tango line of pumps. Ranging from 1hp to 10hp, company officials said the new line of Tango pumps is a completely integrated offering designed to further reduce first installed costs as well as ongoing lifetime costs by more than 30% over traditional approaches.
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.
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).
Viessmann Manufacturing Company announced the addition of the new Vitocrossal 300, CA3 gas-fired boiler. The company says the boiler is the ideal solution for commercial and industrial applications with multiple venting options and seamless integration in building management systems.
Howden American Fan Company launched a line of turbo pressure blowers, ideal for higher pressure systems in combustion air, air pollution control, textile fiber stripping, recycling applications, as well as chemical, pulp and paper, glass, and food processing industry applications. With a wide range of accessories, Howden American Fans customizes the turbo pressure blowers to each individual customer’s system requirements.
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.