“D” Series energy recovery ventilators are utilized in applications that require a rooftop installation. These units may be installed as a stand-alone unit with a separate and distinct duct system from other air conditioning equipment. In many applications the supply (intake) air duct is connected to the return air duct of an air conditioning system (or multiple systems). By doing this the enthalpy wheel is able to provide preconditioned outside air to the air conditioning system(s).

“O” Series energy recovery ventilators are designed for outside use in rooftop or “pad” installations where the application requires a “over and under” duct system. One of the benefits of this design is the ability to be ducted directly to the back of a rooftop air conditioning unit. Another use is for “through the wall” applications. The horizontal return duct connection can be converted to bottom return in the field. Field supplied balancing dampers should be utilized to help control the air volumes.

“S” Series energy recovery ventilators are designed for outside use in rooftop or “pad” installations where the application requires a “side-by-side” duct system. One of the benefits of this design is the ability to easily be connected to the horizontal duct work of an air conditioning system. Field supplied balancing dampers should be utilized to help control the air volumes.