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10
ACCESSORIES
EVAPORATOR RETURN AIR PLENUM
Evaporator return air plenums are available for installations where it is required to duct air to
the inlet of the evaporator. The evaporator return air plenums allow the user to connect round
duct (flexible or rigid) to the return air intake to reduce air noise and increase the number of
options for solving difficult cooling problems. The plenum attaches to the front of the unit, re-
placing the return air grille. Refer to the table below for configuration and application
information
DEP-10 for PWC12 transitions the return air opening to a 10-inch round duct.
2DEP-12 for PWC18 and PWC24 transitions the return opening to a 12-inch round duct.
DEP-16 for PWC36 and PWC60 transitions the return opening to a 16-inch round duct.
NOTE—When a DEP is installed, it is recommended to set the evaporator blower speed
to high, to avoid evaporator coil freeze-up.
Plenum Kit
Duct/
Flange
PWC12 PWC18 PWC24 PWC36 PWC60 FILTERS
DEP-10
(1) 10”X20”X1”
2DEP-12
12 inch
(1) 16”X24”X1”
DEP-16
16 inch
(1) 15”X30”X1”
(1) 10”X30”X1”
Maximum
Equivalent
Feet
25 50 50 50 100
Est. External
Static
Pressure
(.20) (.25) (.25) (.25) (.50)
FILTER(S)
DEP—EVAPORATOR
RETURN AIR PLENUM
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