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13
Plenum Kit
Duct/
Flange
2OAC12 2OAC18 2OAC24 2OAC36 2OAC60 FILTERS
DEP-10
10 inch
✓
(1) 10”X20”X1”
2DEP-12
12 inch
✓ ✓
(1) 16”X24”X1”
DEP-16
16 inch
✓ ✓
(1) 10”X30”X1”
(1)15”X30”X1”
Maximum
Equivalent
Feet
25 50 50 50 100
Estimated
External
Static
Pressure
(.20) (.25) (.25) (.25) (.50)
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 application problems. The plenum attaches to the
front of the unit, replacing the return air grille. Refer to the table below for configuration
and application information.
DEP-10 for 2OAC12 transitions the return air opening to a 10-inch round duct.
2DEP-12 for 2OAC18 & 2OAC24 transitions the return opening to a 12-inch round
duct.
DEP-16 for 2OAC36, 60 transitions the return opening to a 16-inch round duct.
NOTE—When an evaporator return air plenum is installed, it is recommended to set
the evaporator blower speed to high, to avoid coil freeze-up.
FILTER(S)
EVAPORATOR
RETURN AIR PLENUM
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