DUCTING REQUIREMENTS Dryer Safety Operation Requirements Parts and Features Installation Instructions Dryer Use Appendix Dryer Care Troubleshooting If this new dryer is installed into an existing exhaust system you must make sure: The exhaust system meets all local, state, and national codes. That a flexible plastic duct is not used. To inspect and clean all lint buildup from inside the existing duct. The duct is not dented or crushed. The exhaust hood damper opens and closes freely. Manometer measurements The static pressure in any exhaust system for best results shall be between 0.3 to 0.8 inches of water column, and cannot be less than 0 under any circumstances.
with installed duct of 4 inch diameter. Measurement must be done with the empty dryer working with a manometer at the point where the exhaust duct connects to the dryer. A no-heat setting should be used. Lint filter must be clean. 12 Recommended Use only for short-run installation Weather Hood Type 4" DIA 4" DIA 4" 4 inch. (10.2 cm) 4" DIA 2-1/2" 2.5 inch. (6.4 cm) No. of 90° elbows Rigid Metallic Rigid Metallic 0 90 ft. (27.4 m) 60 ft. (18.3 m) 1 60 ft. (18.3 m) 45 ft. (13.7 m) 2 45 ft. (13.7 m) 35 ft. (10.7 m) 3 35 ft. (10.7 m) 25 ft. ( 7.6 m)