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7
Before installing the hood
1. For the most efficient air flow exhaust,
use a straight run or as few elbows as
possible.
CAUTION: Vent unit to outside of
building, only.
2. At least two people are necessary for
installation. Wear gloves to protect
against sharp edges.
3. Fittings material is provided to secure the
hood to most types of walls/ceilings,
consult a Qualified Installer, check if they
perfectly fit with your cabinet/wall.
4. Do not use flex ducting.
5. COLD WEATHER installations should
have an additional backdraft damper
installed to minimize backward cold air
flow and a nonmetallic thermal break to
minimize conduction of outside
temperatures as part of the ductwork.
The damper should be on the cold air
side of the thermal break.
The break should be as close as possible
to where the ducting enters the heated
portion of the house.
6. Make up air: Local building codes may
require the use of Make-Up Air Systems
when using Ducted Ventilation Systems
greater than specified CFM of air
movement.
The specified CFM varies from locale to
locale. Consult your HVAC professional
for specific requirements in your area.
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