KitchenAid KSEG950ESS Manual page 11

� Metal duct may be reduced to 30-gauge galvanized steel or
26-gauge aluminized steel if allowed by local codes. This
reduction is based on information in the International
Residential Codes Section M1601.1 (2006 edition).
� Avoid installing 2 elbows together.
� Use no more than three 90° elbows.
� Make sure there is a minimum of 18" (45.7 cm) of straight vent
between the elbows if more than one elbow is used. Elbows
too close together can cause excess turbulence that reduces
airflow.
� Do not use a 5" (12.7 cm) elbow in a 6" (15.2 cm) or
3 1 ⁄ " x 10" (8.3 x 25.4 cm) system.
4
� Do not reduce to a 5" (12.7 cm) system after using a
6" (15.2 cm) or 3 1 ⁄ " x 10" (8.3 x 25.4 cm) fittings.
4
� Avoid forming handmade crimps. Handmade crimps may
restrict airflow.
� The length of vent system and number of elbows should be
kept to a minimum to provide efficient performance.
� The maximum equivalent length of the vent system is 60 ft
(18.3 m). For altitudes above 4,500 ft (1272 m), reduce
recommended vent run by 20% for best performance.
Cold Weather Installations
An additional backdraft damper should be installed to minimize
backward cold air flow and a thermal break installed to minimize
conduction of outside temperatures as part of the vent system.
The damper should be on the cold air side of the thermal break.
Order Part Number 708786A for a 5" (12.7 cm) thermal break.
Order Part Number 715557A for a 6" (15.2 cm) thermal break.
Refer to the Quick Start Guide for ordering information.
Makeup Air
Local building codes may require the use of makeup air systems
when using 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.
Venting Methods
Common venting methods are shown for a downdraft range. The
downdraft range may be vented through the wall or floor.
Wall Venting
A. Wall cap
B. Venting
Floor Venting
A
B
Venting Between Floor Joists
A
B
A. Wall cap
B. Venting
Calculating Vent System Length
IMPORTANT: This range is rated at 60 ft (18.3 m) of 6" (15.2 cm)
or 30 ft (9.15 m) of 5" (12.7 cm) straight duct. To calculate the
length of the system you need, add the equivalent feet (meters)
for each vent piece used in the system.
Vent Piece 5" (12.7 cm) or 6"
(15.2 cm) Round
Straight round
45° elbow 2.5 ft
(0.8 m)
90° elbow 5.0 ft
(1.5 m)
6" (15.2 cm) wall 0.0 ft
cap
(0.0 m)
3 1 / " x 10" (8.3 cm x 4.5 ft
4
25.4 cm) to 6"
(1.4 m)
(15.2 cm) transition
11