GE P385 Use And Care & Installation Manual page 31

Step 6
Installing the Ductwork
Use minimum 26 gauge galvanized or 24 gauge
aluminum duct in 6" round or 3
combination of both.
PVC duct should be used if installing under a
poured concrete slab.
NOTE: Local building code must be followed in
specifying approved type and schedule of PVC
duct used.
5" round duct may be used on SHORT DUCT
runs. But, note higher equivalent lengths for
each 5" dia. piece used. Don't convert back to
5" duct after use of 6" round or 3
Always use an appropriate roof or wall cap with
damper. Laundry type wall caps should NEVER
be used.
Thru Cabinet Toe Space
Downward Venting
Install ductwork, making male-female
connections in direction of airflow as shown.
Secure all joints with sheet metal screws and
duct tape to assure airtight seal.
Air
Flow
" x 10" size, or
1 ⁄
4
" x 10" duct.
1 ⁄
4
Between Floor Joist
Duct Tape Over Seam
and Screw
Screw
Select downward or wall venting. To convert
blower exhaust direction, remove four nuts
inside the plenum which hold blower and wire
finger guard. Remove blower and rotate so that
exhaust faces downward or rear direction, as
needed. Replace wire finger guard and nuts.
Retighten nuts.
Blower exhaust direction can be adjusted slightly
while in its vertical or horizontal direction by
loosening four nuts holding blower, rotating
blower and retightening nuts.
Use the shortest and straightest duct run
possible. For satisfactory performance the duct
run should not exceed 100 feet equivalent
length. Refer to TABLE 1 of equivalent lengths.
Use TABLE 1 to calculate the total equivalent
length of the ductwork.
Inside Wall to Roof
Rear Wall Venting
Direct to Outside
(continued next page)
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