Exhaust Requirements
40
Part No. 70476501ENR7
Alternate Venting for 120 Series Tumble Dryers
The 120 series tumble dryer is equipped from the factory to exhaust from the top; however, it may be converted to exhaust out the rear
by doing the following (refer to Specifications and Dimensions section):
1. Remove belt guard cover.
2. Remove 10 inch (254 mm) diameter elbow and vertical
duct.
3. Cut out shape from belt guard cover. Refer to Figure 11 .
4. Screw octagonal piece over 10 inch (254 mm) diameter
opening in top of belt guard.
5. Attach new exhaust duct to exhaust thimble on rear panel,
following all requirements in this section.
6. Replace belt guard cover.
T496I
1 Discard
2 Cover
Figure 11
Individual Venting
For maximum efficiency and performance, it is preferred to
exhaust tumble dryer(s) individually to the outdoors.
IMPORTANT: At no point may the cross sectional area
of installed venting be less than the cross sectional
area of the exhaust outlet of the tumble dryer.
The exhaust duct must be designed so the static back pressure
measured 12 inches (305 mm) from the exhaust outlet does
not exceed the maximum allowable pressure specified on the
installation sticker on the rear of the tumble dryer.
NOTE: Static back pressure must be measured with
the tumble dryer running.
The maximum allowable length venting is 14 feet (4.3 m)
and two 90° elbows or equivalent. If the equivalent length
of a duct required for an installation exceeds the maximum
allowable equivalent length, the diameter of a round duct must
be increased by 10% for each additional 20 feet (6.1 m) . Cross
section area of a rectangular duct must be increased by 20% for
each additional 20 feet (6.1 m) . Refer to Table 3 to determine
equivalent venting.
Duct Diameter
Equivalent Length of
Rigid Straight Duct
10 in. (254 mm)
One 90° elbow = 11.6 ft.
(3.5 m)
12 in. (305 mm)
One 90° elbow = 14 ft.
(4.3 m)
14 in. (356 mm)
One 90° elbow = 16 ft.
(4.9 m)
16 in. (406 mm)
One 90° elbow = 18.7 ft.
(5.7 m)
18 in. (457 mm)
One 90° elbow = 21 ft.
(6.4 m)
Summary of Contents for LDR-900-S
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