Range hoods must be ventilated to the outdoors, except for non-vented (recirculating) installations.
Do not ventilate the range hood into an arric or other encloed areas.
Do not use 4” (10.2 cm) laundry-type wall caps.
The length of the range hood exhaust and the number of elbows should be kept to a minimum to provde maximum
performance.
Use no more than three 90° elbows.
Make sure there is a minimum of 24” (61 cm) of straight duct between the elbows if more than one elbow is used.
Do not install two 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 walls or roof openings around the cap.
The size of the vents should be uniform
VENTILATION REQUIREMENTS
Local building codes may require the use of makeup air systems, when using ventilation systems greater than specified
CFM of air movements in your area.
MAKEUP AIR
An additional back draft damper should be installed to minimize backward cold air flow. 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.
COLD WEATHER INSTALLATIONS
This canopy hood is factory set for through the roof wall. A 6” (15.2 cm) round vent system is needed for installation.
The hood exhaust opening is 6” (15.2 cm ) round. To vent through a wall, a 90° elbow is needed. If exhaust ducting with
a diameter of less than 5.91” (150 mm) or if flat ducting is used, the noise level of the range hood will increase and
extraction will be less efficient.
VENTING METHOD
A 90° elbow may be installed immediately above the hood.
REAR DISCHARGE
