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2.4 i
e
nsTAllinG THe
xTerior
To avoid cross-contamination:
• Keep at least 6 feet between both hoods.
• Install hood(s) at least at 18 inches away from the ground OR depth of
expected snow accumulation, whichever is greater.
Make sure intake hood is at least 6 feet (1.8 m) away from any
of the following:
• Dryer exhaust, high efficiency central forced-air system vent,
central vacuum vent
• Gas meter exhaust, gas barbecue-grill
• Any exhaust from a combustion source
• Garbage bin and any other source of contamination.
Ignoring these recommendations could significantly degrade the
quality of the incoming air which, in some cases, could result in
health consequences.
In the event of a conflict between our conditions and local
requirements, the latter will have priority.
2.5 c
d
onnecTinG THe
ucTs To THe
•
If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts to prevent
condensation formation inside and outside ducts, which could cause material damage and/or mold growth.
•
Do not use screws to connect the ducts or transitions to the ports so as not to interfere with ports
inner dampers operation. A non-functioning damper could freeze the unit, which could cause damages.
i
nsulATed flexible ducTs
Use the following procedure to connect the insulated flexible ducts to the ports of the unit (exhaust to outside and fresh
air from outside).
1. Expose the flexible duct by pulling back the insulation, and place it over the inner port ring.
2. Attach the flexible duct to the port using a tie wrap.
3. Seal the joint using duct tape.
4. Pull the insulation and vapor barrier over the joint, tuck them between the inner and outer rings of the double collar and
fasten them in place using duct tape.
The vapor barrier should remain intact and free of cracks or openings. An opening could produce condensation
inside or outside duct, which could cause material damage and/or mold growth in the long run.
VJ0157
T
8-
.
rAnsiTioninG To
in
ducTs
If using 8-in. ducts, install 6-in. to 8-in. transitions on the ports, and secure using duct tape only. If rigid ducting is used,
install a 12-in. section of flexible duct between the transition and the rigid ducting (see above).
r
iGid ducTs
To prevent potential water leakage in cold side rigid ducting insulation, seal all rigid ducting joints with duct tape.
To avoid transmission of vibrations, always use a 12-inch section of flexible duct to connect rigid ducts to the unit. To
connect insulated rigid ducts to the unit (cold side) using insulated flexible ducts, follow instructions in section 2.4. To
connect regular rigid ducts (warm side) to the unit using non-insulated flexible ducts, use a tie wrap.
NOTE: It is recommended to use 8" ducting instead of 6" ducting if required airflow is over 200 CFM and long run of
ducting or high quantity of elbows is used. It will prevent having too high static pressure in the ducting.
H
oods
!
WARNING
u
niT
e
xHAusT
H
ood
c
AulkinG
VD0028
Refer to illustration above for proper connection
method of the insulated ducts to the hoods. An
"Anti-Gust Intake Hood" should be installed in
regions where a lot of snow is expected to fall.
CAUTION
CAUTION
9
i
nTAke
H
ood
18"
6'
18"
o
pTionAl
T
ducT locATion
Ape And ducT Tie
c
AulkinG
6'
18"
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