Haier GDG750AW User Manual - Page 9

English maintain a minimum of 12 inches (30.5cm) clearance between the vent hood and the ground or any other obstruction. The vent flap should be able to move freely, although vertical orientation of the exhaust system is acceptable. Certain extenuating circumstances could affect the performance of the dryer: 1. Only rigid metal duct work should be used. 2. Venting vertically through a roof may expose the exhaust system to down drafts causing an increase in vent restriction. 3. Running the exhaust system through an uninsulated area may cause condensation and faster accumulation of lint. 4. Compression of crimping of the exhaust system will cause an increase in vent restriction. 5. In Canada,only foil-type flexible ducts, if any, specifically identified for use with the appliance by the manufacturer shall be used.In the United States,only foil-type flexible ducts, if any, specifically identified for use with the appliance by the manufacturer and that comply with the UL Outline for Clothes Dryer Transition Duct, Subject 2158A (2006), shall be used. 6. The exhaust duct shall be 4 inch (102 mm) in diameter. The exhaust system should be inspected and cleaned a minimum of every 12 months with normal usage. The more the dryer is used the more often you should check the exhaust system and vent hood for proper operation. RECOMMENDED MAXIMUM Exhaust Hood Types Recommended Use only for short run installations No. of 90º elbows 0 1 2 3 Rigid Metal 90 ft. 60 ft. 45 ft. 35 ft. Flexible Metal Flexible metal metal shoud only be used between the dryer and the wall.Maximum length to be 7.5ft. Rigid Metal Flexible Metal 60 ft. 45 ft. 35 ft. 25 ft. Flexible metal metal shoud only be used between the dryer and the wall.Maximum length to be 7.5ft. 8