Preparation:
Here are some things to consider as you
decide where to install the HEPA system
with an HRV/ERV.
Location:
Make sure there is room to open the
HEPA filter access panel for filter
changes/inspections.
Keep the HEPA system in a location
where you can still access the air han-
dler/furnace filter.
Keep the HEPA system away from pos-
sible water damage
Vibration pads will reduce vibration for
installations where the unit is placed on
the floor.
Install HEPA System on floor or suspended platform.
If the unit is suspended, screws must not penetrate
through the cabinet. Make sure that you have the
proper chains/straps/joists and equipment to keep
unit secure.
Inlet
(Marked as ‘Air In’ on unit)
:
Most HRV/ERV systems will not move as much air
as the HEPA system. For these systems, install an
additional return from another treated air source
into the HEPA system.
If using an additional return duct, it should be
installed upstream of any humidifiers. The fresh
air outlet of the HRV/ERV should be “Y” connected
to the additional return duct then connected to the
inlet of the HEPA system.
The additional return duct (if any) should be
installed at least 8 ft. away from the outlet duct on
the main return.
Duct both the HRV/ERV and the additional return
into the inlet of the HEPA system.
Outlet
(Marked as ‘Clean Air Out’ on unit)
:
Outlet duct should be installed as close to the air
handler/furnace inlet as possible but not directly into
the return air elbow of the main return.
To reduce static pressure, install outlet with a 45
degree takeoff directly up-line from the return air elbow
of air handler/furnace.
Ducting:
If HEPA system is installed where inlet and outlet
collars face down, metal elbows must be connected
to both inlet and outlet collars.
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Each connection must be sealed with aluminum
tape or mastic, including all take offs.
Installed duct runs should be as straight as possible
(if the duct runs are too long, reduced CFM may
result).
If duct is exposed to unconditioned air, externally
insulated flex duct is highly recommended.
Externally insulated flex duct can also be used for
noise reduction purposes
For best indoor air quality, do not use ductboard or
fiberglass inside of ducts.
Electricity:
The unit must be plugged into a grounded 120V,
60Hz outlet.
Required Materials for Installation of Unit:
For Model: HEPA-20
8” diameter flex or rigid duct (as required)
6” diameter flex or rigid duct (as required)
6” diameter 45 degree takeoff
Aluminum tape or mastic
Misc. hanging materials - field provided
For Models: HEPA-40 & HEPA-60
10” diameter flex or rigid duct (as required)
8” diameter flex or rigid duct (as required)
10” diameter 45 degree takeoff
8” diameter 45 degree takeoff
Aluminum tape or mastic
Misc. hanging materials - field provided
NOTE: Be sure to review ‘Rules for Safe Installation
and Operation’ on page 1 of this document before
start-up of this unit.
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HRV/ERV
Figure 8.
Forced air handler/furnace system with an HRV/ERV
This application provides filtration of all Outdoor Air (OA) that is brought into the home through the HRV/ERV,
thus reducing the introduction of dust, pollen and mold from the outdoor air. For systems that have HRV/ERV
units installed, we recommend ducting the ‘fresh air’ outlet from the HRV/ERV into the HEPA system. If the
HRV/ERV CFM (cubic feet per minute) rating is lower than that of the HEPA system, an additional return needs
to be installed into the HEPA system (See figure 8.) The output air from the HEPA system then needs to be
installed into the main return of the air handler/furnace system.
Healthy Climate® Dealer Installation Instructions
Example of Return
to Return Installation
with an HRV/ERV
For homes with a forced
air handler/furnace sys-
tem and an HRV/ERV
system.
Additional Return
Air Handler/Furnace
Air Handler/Furnace Filter
HEPA System
NOTE: This filtration system is an ADDITIONAL filter, and does NOT
replace the existing air handler/furnace system filter.
