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DIRECT CONNECTION of the SUPPLY AIR STREAM to the AIR HANDLER COLD AIR RETURN
(Stale air drawn from key areas of home)
Air
Handler
Outdoors
*Unit is normally balanced on HIGH speed
with air handler blower ON.
High efficiency filter
or electronic air cleaner
Cool Air
Return
NOTES:
1. Air handler blower may be required to operate when HRV is on to provide good air distribution.
2. Weather hood arrangement is for drawing purposes only. 6' (2m) minimum separation required.
18" (460mm) above grade minimum or above anticipated snow level .
3. Due to the differences in pressure between the HRV and the equipment it is being
connected to, the HRV air flow must be confirmed on site, using the balancing
procedure found in the installation manual.
Return Air
3’ min.
recommended
Defrost air port needs to be drawn from clean
area without combustion appliances. To avoid
backdrafting of combustion products, never
draw
defrost air from a room with a naturally
aspirated
appliance, i.e. furnace, hot water
heater, gas dryer, stove, fire place etc.
WARNING
Weather hood arrangement - requires a minimum
of 6' (2m) separation and a minimum of 18" (460mm)
clearance above grade or anticipated snow level.
CAUTION
● Stale air drawn from key areas of
home (bathroom, kitchen, laundry)
● Fresh air supplied to return
air duct of air handler
Partially Dedicated System for HRV
HRV must be balanced.
WARNING
Fresh Air From Outside
Field-supplied
Balancing Damper
(optional)
STALE AIR from various parts of home.
i.e. bathrooms (if required), kitchens (if required).
Fresh Air to Building
Exhaust Air to Outside
Application Illustrations HRV–Option 1