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Simplified Installation (Return/Return Method)
Installation Notes
The ERV must be balanced.
Unit should be balanced on high speed with the furnace
blower on.
It is mandatory that the furnace blower run continuously
or ERV operation be interlocked with the furnace blower.
The duct configuration may change depending on the
ERV model.
A backdraft damper is recommended in the exhaust air
duct to prevent outdoor air from entering the unit.
The airflow must be confirmed on site using the
balancing procedures found in this guide.
Spring-Loaded Backdraft Damper (Recommended)
There is a location for an optional Backdraft Damper with the leaf hinge vertical. The damper is
installed on the "Stale Air to Outside Collar"
RETURN
AIR
Stale Air
to Outside
Fresh Air
from Outside
Attention/Warning
Refer to the model Dimensional Drawings, located on page 16 for the actual locations of the; Fresh Air to Inside,
Fresh Air form Outside, Stale Air from Inside, and Stale Air to Outside port locations.
Weatherhood arrangement is for drawing purposes only. 6 ft (2 m) minimum separation is recommended, unless
dual hood is installed, also to be installed with 18 in (460 mm) above ground.
Check local codes/authority having jurisdiction for acceptance.
Backdraft dampers are recommended for the stale air to outside air duct. This damper prevents outdoor air from
entering the ERV during the operation of the furnace/air handler while the ERV is in standby, off, or recirculating.
DIRECT CONNECTION of both the ERV SUPPLY AIR STREAM and
EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN
40" (1 m) MINIMUM
Dampers for balancing
air flows, if not in collars of unit
Install backdraft damper to
ERV collar with leaf hinge
vertical
3' min.
recommended
Forced Air
Furnace
4
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