Venting Requirements
(Ducted models only)
• Vent system must terminate to the outdoors, except for non
vented (recirculating) installations.
• Do not terminate the vent system in an attic or other enclosed
area.
• Do not use 4" (10.2 cm) laundry-type wall cap.
• Use metal vent only. Rigid metal vent is recommended.
Plastic or metal foil vent is not recommended.
• The length of vent system and number of elbows should
be kept to a minimum to provide efficient performance.
For the most efficient and quiet operation:
• Use no more than three 90° elbows.
• Make sure there is a minimum of 24" (61 cm) of straight vent
between the elbows if more than 1 elbow is used.
• Do not install 2 elbows together.
• Use clamps to seal all joints in the vent system.
• The vent system must have a damper. If the roof or wall cap
has a damper, do not use the damper supplied with the range
hood.
• Use caulking to seal exterior wall or roof opening around the
cap.
• The size of the vent should be uniform.
Cold weather installations
An additional back draft damper should be installed to minimize
backward cold air flow and a thermal break should be 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.
The break should be as close as possible to where the vent
system enters the heated portion of the house.
Makeup air
Local building codes may require the use of makeup air systems
when using ventilation systems with 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
This hood is factory set for venting through the roof or wall. A
6"
(15.24 mm)
round duct system is needed for installation (not
included).
NOTE: Flexible vent is not recommended. Flexible vent creates
back pressure and air turbulence that greatly reduce perfor-
mance. Vent system can terminate either through the roof or wall.
To vent through a wall, a 90° elbow is needed.
For Non-Vented (recirculating) Installations
If it is not possible to vent cooking fumes and vapors to the
outside, the hood can be used in the non-vented (recirculating)
version, fitting a pair of charcoal filters to the blower. Fumes and
vapors are recycled through the round grid. See optional acceso-
ries section.
CAUTION: Mount this hood so that the bottom edge above the
cooking surface is at 27" (68.5 cm) minimum if a gas range is
used or from 24" (61 cm) to 30" (76.2 cm) if an electric range is
used. Household use, please, read installation manual for specific
application. Check your ceiling height and the hood height maxi-
mum before you select your hood.
Venting through the roof
Venting through the wall
B
A
A
A. 6" (15.2 cm) vent
through the roof
B. Roof cap
5
Non Vented (recirculating)
A
B
B
A. 6" (15.2 cm) vent
A. 6" (15.2 cm) vent
through the wall
through the cabinet
B. Wall cap
B. Round recirculating grid