GE GFDS170GHWW Installation Instructions - Page 13

Installation Instructions • DO cut duct as short as possible and install straight into wall. • DO use elbows when turns are necessary. Elbows • DO NOT bend or collapse ducting. Use elbows if turns are necessary. • DO NOT use excessive exhaust length. Cut duct as short as possible. • DO NOT crush duct against the wall. • DO NOT set dryer on duct. EXHAUST LENGTH Using exhaust longer than specified length will: • Increase the drying times and the energy cost. • Reduce the dryer life. • Accumulate lint, creating a potential fire hazard. The correct exhaust installation is YOUR RESPONSIBILITY. Problems due to incorrect installation are not covered by the warranty. EXHAUST LENGTH FOR NORMAL VENT MODELS RECOMMENDED MAXIMUM LENGTH Exhaust Hood Types Recommended Use only for short run installations 4" DIA. 4" DIA. 4" DIA. The MAXIMUM ALLOWABLE length of the exhaust system depends upon the type of duct, number of turns, the type of exhaust hood (wall cap) and all conditions noted on the chart. • Internal elbows added for side or bottom vent conversions must be included in the total elbow count. • Any elbow greater than 45° should be treated as a 90° elbow. • Two 45° elbows will be treated like one 90° elbow. • For every additional 90° elbow, reduce the allowable vent system length by 10 feet. • The total vent system length includes all the straight portions and elbows of the system (transition duct included). EXHAUST LENGTH FOR LONG VENT MODEL - GFDL110 RECOMMENDED MAXIMUM LENGTH Exhaust Hood Types Recommended Use only for short run installations 4" DIA. 4" DIA. 4" DIA. No. of 90° Elbows 0 1 2 3 4 4" Rigid Metal 90 Feet 60 Feet 45 Feet 35 Feet 25 Feet 2-1/2" Rigid Metal 60 Feet 45 Feet 35 Feet 25 Feet 15 Feet No. of 90° Elbows 0 1 2 3 4 5 13 4" Rigid Metal 200 Feet 185 Feet 175 Feet 165 Feet 155 Feet 145 Feet 2-1/2" Rigid Metal 175 Feet 165 Feet 155 Feet 145 Feet 135 Feet 125 Feet