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16
Bedrooms
Fresh Air
Exhaust Air
Central Control - optional
Fresh air to living room
Exhaust
Bathroom
460 mm
1800 mm
HRV
Ducting Fifth Port Units
All HRV(D)’s have a fifth duct port on top of the unit. This duct port is for both defrost and the recirculation mode. A motorized
damper installed in the port closes during defrost or recir
culation temporarily blocking the incoming fresh air-stream, allowing the
warm air from the house to circulate through the HRV. You may wish to duct this port to a common clean air room (living room or
dining room) so when recirculation is activated, household odors from the kitchen, bathroom or basement won’t be introduced into
the living spaces of the home environment.
INSTALLATION EXAMPLES
Example diagram only-duct configuration may change depending on model
It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform
as intended. All air movement devices have a performance curve. The amount of air (CFM) that an HRV/ERV will deliver is
directly related to the total external static pressure (E.S.P.) of the system. Static pressure is a measure of resistance imposed
on the blower by length of duct work/number of fittings used in duct work, duct heater etc.
Fully Dedicated System
(new construction)
Stale air drawn from key areas
of home (bathroom, kitchen,
laundry)
Fresh air supplied to main liv-
ing areas
HRV must be balanced
RADIANT HEATED HOMES
NOTE:
The recirculation function can be accessed with a optional digital control. It allows air to move gently throughout the home without
exchanging air to the outside, until needed.