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ERV
OVERVIEW
1.2 ENERGY RECOVERY BASICS
RenewAire energy recovery ventilators use static-plate, enthalpy-core heat exchangers that
have no moving parts.
u
During summer months, the hot and humid OA passes by the cooler, drier RA, lowing its
temperature and humidity.
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During winter months, the cold and dry OA passes by the warmer, moister RA, raising its
temperature and humidity.
EA
OA
RA
SA
CA
IMPORTANT
It is important to understand and use the equipment airstream terminology as it is used in
this manual. The airstreams are defined as:
u
Outside Air (OA): Air taken from the external atmosphere and, therefore, not previously
circulated through the system. Each ERV unit has an OA air inlet.
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Supply Air (SA): Air that is downstream of the enthalpic cores and is ready for conditioning.
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Conditioned Air (CA): Air that is supplied to an occupied space.
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Return Air (RA): Air that is returned to a heating or cooling appliance from a conditioned
space. When the ERV unit operates in recirculation mode, RA is conditioned and returned
to the occupied space in the form of CA. Each ERV unit has an RA inlet.
u
Exhaust Air (EA): Air that is removed from a heating or cooling appliance and discharged.
Each ERV unit has an EA outlet.
