by Brianna Crandall — March 29, 2019 — Greenheck, a US-based manufacturer and distributor of air movement, conditioning and control equipment around the world, has expanded its line of Dedicated Outdoor Air Systems (DOAS) for high percentage and 100% outside air. The new pre-engineered rooftop ventilator models RV-110 and RVE-180 with energy recovery provide capacities up to 18,000 cfm, up to 70 tons of open packaged cooling and 1200 mbh indirect gas-fired heating.
The new units are ideal for 100% outdoor air, variable air volume and single-zone applications.
The new pre-engineered rooftop ventilator models RV-110 (shown) and RVE-180 provide energy recovery offer capacities up to 18,000 cfm, up to 70 tons of open packaged cooling and 1200 mbh indirect gas-fired heating. Image courtesy Greenheck
Greenheck explains a dedicated outdoor air system (DOAS) as being a unit supplying cooled, dehumidified outside air to the building in summer and heated outside air in the winter. The system can also include a total energy wheel, which offers up to 80% total effectiveness, reducing the heating and cooling capacity requirement of the DOAS unit significantly. The new RVE model features an energy recovery wheel for superior energy savings.
Both rooftop ventilator models feature an upgraded controls platform for efficient operation, 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), and is designed to be easily configured in the field.
Factory-mounted variable frequency drives on models RV-110 and RVE-180 control 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, says Greenheck.
For more information about Greenheck’s Dedicated Outdoor Air Systems and other ventilation products, visit the company’s website.
