Fantech AEV Series Installation Manual - page 7
7
Exhaust Air In
(Kitchen Area)
Exterior ducting installation
A well designed and installed ducting system will allow the AEV to operate at
its maximum efficiency. Always try to keep duct runs as short and straight as
possible.
Weatherhood location
• Decide where your intake and exhaust hoods will be located.
Locating the Intake Weatherhood
• Should be located upstream (if there are prevailing winds) from the
exhaust outlet.
• At a minimum of 2m (6’) away from dryer vents and furnace exhaust
(medium or high efficiency furnaces), driveways, oil fill pipes, gas meters,
or garbage containers.
• At a minimum height of 460mm (18’’) above the ground, or above the level of expected snow accumulation.
• At a minimum distance of 1m (3’) from the corner of the building.
• Do not locate in the garage, attic, crawl space, or underneath deck.
Locating the Exhaust Weatherhood
• At least 6’ (2m) from the ventilation air intake
• At least 460mm (18") above ground or above the depth of expected snow accumulation
• At least 1m (3’) away from the corner of the building
• Not near a gas meter, electric meter or a walkway where fog or ice could create a
hazard
• Do not locate in a garage, workshop or other unheated space
Installing the ducting to the weatherhoods
The inner liner of the flexible insulated duct must be clamped to the sleeve of the
weatherhoods (as close to the outside as possible) and to the appropriate port on the
AEV. The insulation should remain full and not be squished. The outer liner, which acts as
a vapor barrier must be completly sealed to outer wall and the AEV using tape and or
caulking. A good bead of high quality caulking (preferably acoustical sealant) will seal the
inner flexible duct to both the AEV port and the weatherhood prior to clamping.
To minimize air flow restriction, the flexible insulated duct that connects the two outside
weatherhoods to the AEV should be stretched tightly and be as short as possible.
Twisting of folding the duct will severely restrict air flow.
See “Installation Diagram Examples” for installation examples.
1
Using the duct connection of
the outside hood, outline the
intake & exhaust holes to be
cut. The holes should be slightly
larger than the duct connection
to allow for the thickness of the
insulated flexible duct. Cut a
hole for both the intake and
exhaust hoods.
3
Push the hood into the opening
and then attach the hood to the
outside wall with mounting
screws.
Repeat the installation
procedure for both the supply
and exhaust hoods.
2
Pull the insulated flexible duct
through the opening until it is
well extended and straight.
Slide the duct’s inner vinyl
sleeve over the hood duct
connection and secure. Pull the
insulation over the duct and
pull the vapor barrier over the
sleeve. Secure with
appropriate tape or sealant.
4
Using a caulking gun, seal
around both hoods to prevent
any leaks.
Steps for hood installation:
36" (1m)
min.
INTAKE
OUTSIDE CORNER
INSIDE CORNER
EXHAUST
18" (460mm) min.
18" (460mm) min.
6' (2m)
min.
36” (1m)
min.