GE GFDR485 Owner's Manual And Installation Instructions page 25

Installation Instructions
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.
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 the side exhaust installations, add one 90 °
elbow to the chart.
, The total vent system length includes all the
straight portions and elbows of the system
(transition duct included).
No. of 90 °
Elbows
0
1
2
3
4
4" DIA
4" DIA
Rigid
Metal
90 Feet
60 Feet
45 Feet
35 Feet
25 Feet
EXHAUST LENGTH
RECOMMENDED MAXIMUM LENGTH
Exhaust Hood Types
Recommended Use only for short-run
installations
/4" DIA
2w'14---
Rigid
Metal
60 Feet
45 Feet
35 Feet
25 Feet
15 Feet
25