VENTILATORS VH30100 - Installation; Installation of the HRV;ERV; Insulated Flex from Unit to Outside Wall

INSTALLATION
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8
IO-VENT-SS
Installation of the HRV/ERV
IMPORTANT Minimum installaon requirements:
a) Minimum two 2"x 4" (50.8 mm x 101.6 mm) wood
wall studs and minimum ⅜" (9.5 mm) thick drywall is
required to secure the HRV/ERV wall bracket.
b) Support for weight of 80 lbs, which includes HRV/
ERV, duct connecons and accessories. Proper instal-
laon requires that the unit be secured to the wall. If
there are no wall studs available, secure a sheet of ¾"
plywood to wall then fasten wall mounng bracket
to plywood.
Tip to installer: If the unit is not level, improper
drainage will occur and could lead to moisture and
leakage problems.
It is recommended that approximately 16 inches of exible
duct be installed between the HRV or ERV and your rigid
duct. The exible duct is connected to the HRV or ERV in
the same way as the insulated ex.
Insulated Flex from Unit to Outside Wall
Tip to installer: To ensure a beer installaon and to
avoid an undesired bend in the duct, align the exible duct
with the collar before securing over the four hooks on the
inner surfaces of the collar.
All ducng to and from the HRV/ERV must be adequately
insulated to minimize heat loss and gain. All tapes,
mascs, and nonmetallic clamps used for eld installaon
of exible ducts shall be listed and labeled to Standard UL
181B - Closure Systems for Use With Flexible Air Ducts and
Air Connectors.
Once insulated ex is aached to the collar, slide collar into
the keeper secon and aach collar to the unit with four,
#10 x 5/8" screws supplied in installaon kit to ensure a
proper seal. See Figures 9-13 on following page.
Figure 5 Installaon of the wall bracket. Secure with two
#10 x 1
1
⁄4" screws.
Figure 6 Hang HRV/ERV on
the wall-mounng bracket.
Figure 7 Before compleng
the installaon, make sure
that the HRV/ERV is level.
Figure 8 Secure HRV/ERV to
wall-mounng bracket with
the two, #8 x 3⁄8" screws.
NOTE: Clean Comfort Venlators (HRV/ERV) that use a
fan shut down defrost sequence for frost protecon are
NOT equipped with a motorized outdoor air damper.
Special consideraon is required when one of the follow-
ing types of installaons is chosen:
a) Exhaust at the source and supply in the return air duct,
or
b) Exhaust and supply in the return air duct
The HRV/ERV must operate in the connuous venlaon
mode to avoid cold, uncondioned air being introduced
through the unit and directly into the furnace during
heang season. However if the homeowner chooses to
run the unit in Intermient (“INTER”) mode or turn it
“OFF”, cold supply air will be drawn in through the HRV/
ERV when the system’s blower fan is operang e.g. during
a heang cycle. We recommend installing a motorized
damper between the HRV/ERV supply air connecon
and the furnace’s return air duct that will automacally
close when the HRV/ERV is not operang. You may also
consider the installaon of a backdra damper on the
venlator’s exhaust air connecon to prevent cold air
inltraon.
Alternavely, installing a venlator that employs a
recirculang defrost sequence and is equipped with
an integrated motorized outdoor air damper, such as
the VH30120R or VH30160R, would avoid the problem
described above.