Greenheck, a global leader in manufacturing and distributing air movement, conditioning and control equipment, has expanded its line of dedicated outdoor air systems (DOAS) for high percentage and 100 per cent outside air.

Its pre-engineered rooftop ventilator models RV-110 and RVE-180 with energy recovery offer capacities up to 18,000 cfm, up to 70 tons of packaged cooling and 1,200 mbh (thousand BTUs per hour) indirect gas-fired heating, according to a company spokesman.

He says both models feature an upgraded controls platform with a web user interface (UI) that comes as standard.

“The new web user interface provides an overview graphic of the unit operation and allows the controller menus to be accessed and adjusted from the web UI. The factory-programmed, wired and tested controller can operate as a stand-alone unit or integrate with a building management system (BMS),” the spokesman says.

Factory-mounted variable frequency drives (VFD) on models RV-110 and RVE-180 control the air flow. A digital scroll compressor provides tight temperature and humidity control, and a 10:1 high turndown furnace provides precise temperature control. All are standard features with packaged DX cooling and indirect-gas heating on these new models.

Featuring two-inch double-wall construction and R13 thermally broken foam insulation, Greenheck DOAS units meet the demands of today’s heating, cooling, dehumidification, and ventilation requirements.

Meanwhile, Greenheck has expanded its louvre line with the addition of wind-driven rain louvre EVH-302.

Featuring 3-inch-deep vertical rain-resistant blades, the EVH-302 is AMCA 500-L certified for air performance, water penetration and wind-driven rain, AMCA 540 listed for wind-borne debris and AMCA 550 listed for high velocity wind-driven rain.

“Greenheck’s wind-driven rain louvres are designed to provide high-volume intake and exhaust ventilation with maximum protection against water penetration even in the most extreme weather conditions. Louvres featuring vertical blades offer the best protection against wind-driven rain and the vertical blade offers a distinct look to a building’s façade,” says the spokesman.

Manufactured of extruded aluminium, Greenheck louvres can be specified with a variety of options in a broad array of architectural finishes for durability and compatibility with adjacent components.