KitchenAid KXU2836JSS Installation Instructions - Page 6

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 range hood is factory set for venting through the roof or through the wall. The vent system needed for installation is not included. A 6" (15.2 cm) round vent system is recommended. Roof Venting Wall Venting B A A B Example vent system - 6" (15.2 cm) 90˚ elbow 6 ft (1.8 m) Wall cap 3 ft (0.93 m) Maximum Length = 35 ft (10.7 m) 1 - 90° elbow 1 - wall cap 9 ft (2.8 m) straight System length = 5 ft (1.5 m) = 0 ft (0 m) = 9 ft (2.8 m) = 14 ft (4.3 m) Non-Vented (recirculating) Installations Through the Soffit/Cabinet If it is not possible to vent cooking fumes and vapors to the outside, the range hood can be used in the non-vented (recirculating) version, using a charcoal filter. Recirculation Kit Part Number W10356918 is available from the dealer or an authorized parts distributor. Damper installation is not required. A A B B C D F D F E E A. 6" (15.2 cm) vent through the roof B. Roof cap A. 6" (15.2 cm) vent through the wall B. Wall cap Calculate Vent System Length The recommended vent system is 6" (15.2 cm) round vent with a maximum length of 35 ft (10.7 m). For the best performance, use no more than three 90° elbows. To calculate the length of the system, add the equivalent feet (meters) for each of the vent pieces used in the system. Vent Piece 6" (15.2 cm) 45° elbow 2.5 ft (0.8 m) A. Ceiling B. Vent cover C. Soffit D. 6" (15.2 cm) vent E. Range hood F. Cabinet DE C B A 90° elbow 6 5.0 ft (1.5 m) A. Range hood B. Vent system C. Top of cabinet D. Vent cover E. Ceiling or soffit