Listed by
Underwriters
Laboratories
Dryer Exhausting Information – Use Metal Duct Only
Vertical and Horizontal Ducting
0
90 ft.
60 ft.
1
60 ft.
45 ft.
6.8 and 5.8 cu. ft.
2
45 ft.
35 ft.
Capacity Models
3
35 ft.
25 ft.
all Electric Dryers
4
25 ft.
15 ft.
0
90 ft.
60 ft.
6.8 and 5.8 cu. ft.
1
60 ft.
45 ft.
Capacity Models
2
45 ft.
35 ft.
all Gas Dryers
3
30 ft.
25 ft.
Portable/Stationary Models
DSKS433EB
0
46 ft.
37 ft.
DSKS333EC
1
38 ft.
30 ft.
DSKP333EC
2
31 ft.
22 ft.
WSM2780H
3
24 ft.
15 ft.
0
56 ft.
42 ft.
1
46 ft.
36 ft.
Unitized Model
2
34 ft.
28 ft.
WSM2700H
3
32 ft.
18 ft.
Unitized Models
0
43 ft.
36 ft.
WSM2420D
1
33 ft.
26 ft.
WSM2480D
2
23 ft.
16 ft.
Number
of
90°
Turns
Maximum Length of
4"-Dia.
Rigid Metal
Duct
Exhaust Hood Type
Domestic
Dryer Models
A
4" Opening
B
2-1/2"
Opening
Best Performance
B
2-1/2
4
A
A
For complete information, see installation instructions packed with your dryer.
Ducting Materials:
For best performance, this dryer should be vented with 4" diameter all rigid metal exhaust duct.
If rigid metal duct cannot be used, then UL-listed flexible metal (semi-rigid) ducting can be used
(Kit WX08X10077). In special installations, it may be necessary to connect the dryer to the
house vent using a flexible metal (foil-type) duct. A UL-listed flexible metal (foil-type) duct may
be used ONLY in installations where rigid metal or flexible metal (semi-rigid) ducting cannot be
used AND where a 4” diameter can be maintained throughout the entire length of the transition
duct. Please see installation instruction packed with your dryer for complete instructions when
using flexible metal (foil type) ducting.
Exhaust Length Calculation:
1. Determine the number of 90° turns needed for your installation. If you exhaust to the side or
bottom of dryer, add one turn.
2. The maximum length of 4' rigid (aluminum or galvanized) duct which can be tolerated is
shown in the table.
A turn of 45° or less may be ignored. Two 45° turns within the duct length should be treated
as a 90° elbow. A turn over 45° should be treated as a 90° elbow.
Dryers
must
be exhausted to the outside.
Caution:
For personal safety do not terminate exhaust into a chimney, under any enclosed
house floor (crawl space), or into an attic, since the accumulated lint could create a fire hazard or
moisture could cause damage. Never terminate the exhaust into a common duct or plenum with
a kitchen exhaust, since the combination of lint and grease could create a fire hazard.
Exhaust ducts should be terminated in a dampered wall cap to prevent back drafts, bird nesting,
etc. The wall cap must also be located at least 12" above the ground or any other obstruction
with the opening pointed down.
HTDP120ED – Hotpoint
®
6.8 cu. ft. capacity DuraDrum
™
electric dryer
Specification Created 1/12
470164
