Specifications

2
Pro-Series
Definitions
Adsorption – The physical bonding of water vapor on the surface of the desiccant.
Cassette – The framework supporting the wheel. (See also Wheel.)
Desiccant – A naturally occurring or man-made material with a high affinity for water vapor. ERV uses a desiccant
material which minimizes cross contamination.
Enthalpy wheel – A common term used to describe all rotating, wheel-shaped heat transfer devices that exchange
sensible (temperature) and latent (water vapor) energy from one airstream to another. The word, enthalpy, means heat
content or total heat. The term, enthalpy exchanger, may also be used.
Exhaust air – The air from indoors that passed through the energy recovery wheel and is being ducted outdoors.
Heat wheel – This generally describes all rotating devices which transfer only sensible energy.
Media – The corrugated material inside the wheel.
Outdoor air – The fresh outside air that is being drawn in the energy recovery wheel. Once it passes through the wheel
it becomes the supply air.
Return air – Air from the indoor space that is pulled through the energy recovery wheel. Once it passes through the
wheel it is referred to as exhaust air.
Rotor – The media-filled wheel that rotates. It transfers heat energy and water vapor from one ducted airstream to the
other. Often, the rotor will be referred to as a wheel.
Seal – The soft material that closely surrounds the rotor to limit the amount of bypass air around the rotor.
Supply air – Air provided to the indoor space. Outside air that passes through the energy recovery wheel becomes
supply air.
Unit – Used frequently throughout this manual to mean the energy recovery wheel and attendant components such as
cabinets, motors, fans and other parts that work together to make an effective energy recovery product.
Wheel – Refers to the rotating wheel containing the coated media. The stationary framework supporting the wheel is
the wheel cassette.
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Figure 3.Figure 3.
Figure 3.Figure 3.
Figure 3. Typical Pro-Series unit with
components highlighted per definitions above.