Planning Of The Ductwork; Installing 6'' Ducts And Registers - Broan-NuTone AE60 Guide D'installation Et D'utilisation

3. INSTALL THE UNIT
3.4 P
LANNING OF THE
• Keep it simple. Plan for a minimum number of bends and joints. Keep the
length of the insulated ducts to a minimum.
• Do not use wall cavities as ducts. Do not use branch lines smaller than
4'' (102 mm) diameter.
• Do not ventilate crawl spaces or cold room. Do not attempt to recover the
exhaust air from a dryer or a range hood, this would cause the clogging of
the unit.
• Be sure to plan at least one exhaust register on the highest lived-in level of
the house, if it has 2 floors or more.
3.5 I
NSTALLING
If ducts have to go through an unconditioned space, always use insulated
ducts (purchase separately).
3.5.1 S
TALE AIR EXHAUST DUCTWORK
Never install a stale air exhaust register in a room where a combustion
device operates, such as a gas water heater, a gas furnace or a fireplace.
• Install the stale air exhaust register(s) in the main area where the contaminants
are produced: kitchen, living room, etc. Position the register(s) as far from
the stairway as possible and in such a way that the air circulates in all the
lived-in spaces in the house.
• If a register is installed in the kitchen, it must be located at least 4 feet (1.2 m)
from the range.
• Install the register(s) 6 to 12 inches (152 to 305 mm) from the ceiling on an
interior wall OR install it in the ceiling.
• Attach one end of the 6'' flexible duct to the stale air exhaust register, and
the other end to the unit stale air from building port, using tie wrap and duct
tape.
3.5.2 F
RESH AIR DISTRIBUTION DUCTWORK
• Install the fresh air distribution register(s) in a large, open area in the lowest
level to ensure the greatest possible air circulation. Keep in mind that the fresh
air register(s) must be located as far as possible from the stale air register(s).
• Install the register(s) in the ceiling OR 6 to 12 inches (152 to 305 mm) from
the ceiling on an interior wall. The duct length should be at least 15' (4.6 m).
(The cooler air will then cross the upper part of the room and mix with room
air before descending to occupant level.)
• Attach one end of the 6'' flexible duct to the fresh air distribution register,
and the other end to the unit fresh air to building port, using tie wrap and
duct tape.
D
UCTWORK
6'' D
UCTS AND
CAUTION
!
(CONT'D)
R
EGISTERS
WARNING
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