Installation Instructions
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 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
13
•
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
.
•
DO
cut duct as short
as possible and install
straight into wall.
•
DO
use elbows when
turns are necessary.
Elbows
4" DIA.
4"
4" DIA.
4" DIA.
2-1/2"
RECOMMENDED MAXIMUM LENGTH
Exhaust Hood Types
Recommended
No. of 90°
Elbows
Rigid
Metal
Rigid
Metal
200 Feet
185 Feet
175 Feet
165 Feet
155 Feet
175 Feet
165 Feet
155 Feet
0
1
2
3
4
Use only for short
run installations
5
EXHAUST LENGTH
FOR LONG VENT MODEL - GFDL110
145 Feet
145 Feet
135 Feet
125 Feet
4" DIA.
4"
4" DIA.
4" DIA.
2-1/2"
RECOMMENDED MAXIMUM LENGTH
Exhaust Hood Types
Recommended
No. of 90°
Elbows
Rigid
Metal
Rigid
Metal
90 Feet
60 Feet
45 Feet
35 Feet
25 Feet
60 Feet
45 Feet
35 Feet
25 Feet
15 Feet
0
1
2
3
4
Use only for short
run installations
EXHAUST LENGTH
FOR NORMAL VENT MODELS
