DUCTWORK
This method draws return air from specific points in the
house and supplies outside air to specific locations of
the house. This system is not connected to an air
furnace. (Fig.11 & Fig.12)
Return air ducts should be installed in areas of the
home where the poorest indoor air quality exists (bath-
room and kitchen). Supply air ducts should be installed
to all bedrooms and living areas.
Method - Fully dedicated ducted installation
Note
(1)The ERV unit must be balanced.
(2)Check local codes and authority having jurisdiction for acceptance.
Fig.10
11
Air
furnace
(914 mm)
Min.
Dampers for
balancing airflows
OA
EA
RA
SA
Outdoors
Return air
Return air
36”
Return air from various parts of home.
(i.e. bathrooms, kitchens, utility areas)
Fig.11
Fig.12
Note
(1)Must have 2-3 feet of straight duct run from all duct attachment points on
the ERV. Do not use any elbows or other peripheral pieces inside of 2-3
feet when attaching duct runs to the ERV.
(2)The distance between two outdoor hoods please see P.12.
(3)The airflow must be confirmed on site using the balancing procedures found in P.14.
Outdoors
Return air from various parts of
home (e.g. bathrooms, kitchens,
utility areas)
Supply air to main
living areas (e.g.
bedrooms, living
room)
OA
EA
RA
SA
Note
(1)Must have 2-3 feet of straight duct run from all duct attachment
points on the ERV. Do not use any elbows or other peripheral
pieces inside of 2-3 feet when attaching duct runs to the ERV.
(2)Unit is normally balanced on high speed with the furnace blower on.
(3)The distance between two outdoor hoods please see P.12.
(4)The airflow must be confirmed on site using the balancing
procedures found in P.14.
