VENTILATORS VH30100 - Types of Installations; Independent System Installation; Exhaust at the Source and Supply in the Return

TYPES OF INSTALLATIONS
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IO-VENT-SS
Figure 1
Independent System Installation
From an Indoor Air Quality standpoint, this is the pre-
ferred method of installing a venlaon system in a home.
This installaon uses a dedicated duct system for both the
supply of fresh air and exhausng of stale air accumulated
in the home.
With an Independent System installaon, fresh air is
supplied to all bedrooms and living areas and stale air is
exhausted from the bathroom, kitchen and laundry room.
See Figure 1.
Important: For correct performance of your HRV or ERV,
the installaon of a 6" round galvanized backdra damper is
required on the ductwork supplying fresh air to the home.
Figure 2
Exhaust at the Source and Supply
in the Return
This applicaon uses a dedicated duct
system for exhausng the stale air
from the home. The fresh air is routed
to the return air duct and is distributed
through the home by the exisng
supply air ductwork of the forced-air
system. See Figure 2.
Make sure when using this installaon that
your fresh air duct connecon to the forced
air system return air duct is not less than 10 (3 m)
upstream of the return plenum connecon to the
forced-air system. Check with your local building codes
or the manufacturer of the forced-air system. The HRV
and forced-air system must be set to operate in connu-
ous mode to achieve maximum comfort and to avoid
cross-contaminaon.
Note to Installer: Dwellings with mulple forced-air
systems require one HRV/ERV per system.
Ensure the unit runs in conjuncon with the forced-air
system. Refer to wiring diagram for furnace interlock
instrucons.
* For minimum distance between return and forced-air system, check with
your local building codes or the manufacturer of the forced-air system.
Important: For opmal performance of your HRV or
ERV, the installaon of an oponal 6" round galvanized
backdra damper is required on the fresh-air-to-home
duct work. When performing duct connecons, always
use approved tools and materials. Also use steel duct
connecons for this type of installaon.
Important: The duct bringing outdoor air to the
return air plenum must be equipped with a manual
damper to balance the outdoor airow.
From Bathroom
or Kitchen
To living space
HRV / ERV
Forced-air System
6'
(1.83 m)
A
B
18" (457 mm)
A+B=NOT LESS THAN 10FT (3 M)*