Americair 8500 & 10000 and Operation’ on page 1 of this document before, start-upof this unit

Dealer Installation Instructions

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’ outflow 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 outflow air from the HEPA system then needs to be installed into the main return of the air handler/furnace system. Ensure that you follow the proper installation instructions as outlined in the HRV/ERV Installation manual(s).

Preparation:		Example of Return to
		Return Installation
Here are some things to consider as you
		with an HRV/ERV
decide where to install the HEPA system	HRV/ERV
		For homes with a forced
with an HRV/ERV.
		air handler/furnace sys-
Location:		tem and an HRV/ERV
		system.
• Make sure there is room to open the
		Additional Return
HEPA filter access panel for filter
changes/inspections.		Air Handler/Furnace
• Keep the HEPA system in a location		Air Handler/Furnace Filter
where you can still access the air han-		HEPA System
dler/furnace filter.		Figure 16.
• Keep the HEPA system away from	NOTE: This filtration system is an ADDITIONAL filter, and does NOT
possible water damage	replace the existing air handler/furnace system filter.

• Vibration pads will reduce vibration for
	ble (if the duct runs are too long, reduced CFM
installations where the unit is placed on the floor.
• Install HEPA System on floor or suspended platform.	may result).
If the unit is suspended, screws must not penetrate	• If duct is exposed to unconditioned air, externally
through the cabinet. Make sure that you have the	insulated flex duct is highly recommended.
proper chains/straps/joists and equipment to keep	• Externally insulated flex duct can also be used for
unit secure.	noise reduction purposes.
Intake (Marked as ‘Air In’ on unit):	• For best indoor air quality, do not use ductboard or
• Most HRV/ERV systems will not move as much air	fiberglass inside of ducts.
as the HEPA system. For these systems, install an	Electricity:
additional return from another treated air source	• The unit must be plugged into a grounded 120V,
into the HEPA system.	60Hz outlet.
• If using an additional return duct, it should be	Required Materials for Installation of Unit:
installed upstream of any humidifiers. The fresh
air outflow of the HRV/ERV should be "Y" connect-	Items for 2500HV & 4000HV
ed to the additional return duct then connected to	Flex or rigid duct	6” round
the inlet of the HEPA system.	(length as required)
• The additional return duct (if any) should be	Takeoffs	Two 6”
installed at least 6 ft. away from the outflow duct	Items for 6000V
on the main return.	Flex or rigid duct	10” round & 8” round
• Duct both the HRV/ERV and the additional return	(length as required)
into the intake of the HEPA system.	Takeoffs	One 10” & One 8”
Outflow (Marked as ‘Clean Air Out’ on unit):	Items for 6500, 8500 & 10000
	Flex or rigid duct	12” round or 10” x 12”
• Outflow duct should be installed as close to the air
handler/furnace inlet as possible but not directly	(length as required)
into the return air elbow of the main return.	Takeoffs	Two 10”x12”
Ducting:	All Models
	Aluminum tape or mastic as required
• If HEPA system is installed where inlet and outflow
collars face down, metal elbows must be connected	Misc. hanging materials - field provided
to both inlet and outflow collars.	NOTE: Be sure to review ‘Rules for Safe Installation
• Each connection must be sealed with aluminum	and Operation’ on page 1 of this document before
tape or mastic, including all take offs.	start-up of this unit.

• Installed duct runs should be as straight as possi-

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