Installation requirementsEnglish 15Exhausting requirementsThe dryer must not be exhausted into achimney, a wall, a ceiling, an attic, a crawlspace, or a concealed space of a building.Exhausting the dryer to the outside willprevent large amounts of lint and moisturefrom being blown into the room.In the United States and Canada• All dryers must be exhausted to theoutside.• The required exhaust duct is 4 inches(10.2 cm) in diameter.• See “Ducting requirements” in the“Installation” section for the maximumduct length and number of bends thatcan be used.• The total length of flexible metal ductmust not exceed 7’ 101/2” (2.4 m).• Do not assemble the duct with screwsor other fastener means that extendinto the duct and catch lint.• For the United States only: Use onlythose foil-type flexible ducts, if any,specifically identified for use with theappliance by the manufacturer and thatcomply with the Outline for ClothesDryer Transition Duct. Use Subject2158A.Outside the United States and Canada• Refer to the local codes.WARNING• You must exhaust the dryer to theoutside to reduce the risk of fire whenyou install the dryer in an alcove orcloset.• Do not use a plastic or non-metalflexible duct.• If your existing ductwork is plastic, non-metal, or combustible, replace it withmetal.• Use only a metal exhaust duct that isnon-flammable to ensure containmentof exhaust air, heat, and lint.DC68-03170Z-11_IB_DV7450M_EN_R.indd 15DC68-03170Z-11_IB_DV7450M_EN_R.indd 15 2023-06-30 3:23:322023-06-30 3:23:32