OCEANAIRE PWC Series, Manual

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9
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, replacing 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/2DEP 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
10 inch
✓
(1) 10”x 20”x 1”
2DEP-12
12 inch
✓ ✓
(1) 16”x 24”x 1”
DEP-16
16 inch
✓ ✓
(1) 12”x 30”x 1”
(1) 10”x 30”x 1”
Maximum
Equivalent
Feet
25 50 60 70 80
Est. External
Static
Pressure
(.20) (.25) (.25) (.25) (.50)
FILTER(S)
EVAPORATOR RETURN
AIR PLENUM