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PA-Series
ERV
1.0 OVERVIEW
1.1 PA-SERIES INSTALLER INFORMATION
The PA-Series Energy Recovery Ventilators (ERVs) are available either factory-assembled or
knocked-down for on-site assembly.
If the unit is received pre-assembled, please be sure to:
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review the Forklift Information section;
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review the Warnings and Cautions at the front of the manual.
If you are assembling the unit please be sure to:
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review the Warnings and Cautions at the front of the manual;
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see the Airflow Direction and Filters Locations sections before starting;
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review the Forlift Information section.
Throughout the assembly instructions, we refer to the “two-stack” and “three-stack” models,
and also to “three-high” and “four-high” models.
PA6X: Two-stack, three high
PA8X: Two-stack, four-high
PA9X: Three-stack, three-high
PA12X: Three-stack, four-high
1.2 SYSTEM DESIGN—GENERAL
1.2.1 Function
The patented RewAire PA-Series ERVs (Covered by US Patent 5,660,228) are used to transfer
energy from exhaust air leaving a building, into fresh air being brought in from the outside for
ventilation. By recovering energy from the exhaust airstream, the benefits of ventilation can be
enjoyed without the full energy cost to condition the outside air.
1.2.2 For Indoor Use Only
The unit is designed for installation in a sheltered location, out of the weather.
1.2.3 Locate to Minimize Duct Length
The ideal location for the unit is:
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central to the inside duct runs;
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close to both the exhaust duct (to the outside) and the fresh air duct (from the outside).
1.2.4 Provide Service Access
The top of the unit must be accessible for cleaning and filter replacement. See dimension
drawing at the front of the manual.
1.2.5 Specify and Provide Blowers
The PA-Series ERVs do not include blowers. Therefore, two blowers must be installed as part of
the system. Several ducts must also be installed. See Blower Design Issues section below.
1.2.6 Provide System Shut-off Means for Safety
Provide a nearby disconnect switch so service people can shutoff the blowers connected to the
system when changing filters.
OVERVIEW
