Venmar HRV110 - S Implified I Nstallation (C Onnection to a Forced Air System )

8
2.4.3 simplifieD instAllAtion (Ducting to A forceD Air system)
The central forced-air system blower must always be in operation when the unit is running since fresh air
evacuation and distribution come from the same section. The central forced-air system blower must operate
to avoid fresh air to be directly drawn by the evacuation, which would reduce signicantly fresh air supply
to the building.
CAUTION
Duct connection to the central forced-air system can be regulated by some codes and standards. It is your
responsibility to consider and comply with your local requirements to avoid any non-compliance.
WARNING
!
Fresh air and exhaust air ow through the central forced-air
system ducts, which simplies the installation.
The use of bathroom fans and a range hood is suggested to
exhaust stale air.
StAle Air from Building:
Connect the stale air intake port of the unit to the central forced-
air system return duct at least 3 feet ahead of the fresh air
distribution from the unit.
freSh Air to Building:
Connect the fresh air distribution duct of the unit to the central
forced-air system return duct at least 10 feet away from the
central forced-air system (A+B)*.
* This 10-ft. distance applies only in areas where the outside
temperature falls below the freezing point 0°C (32°F).
VH0167
C
B
A
A+b= min 10’
c=3’
Fresh air to
building
Stale air from
building
Stale air to
outdoors
Fresh air from
outdoors
NOTE: A home with multiple forced air systems should have one
unit on each system.
Do not connect the unit to any forced air system supply duct.
CAUTION