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ACCESSORIES
CONDENSER RETURN AIR PLENUM
Condenser return air plenums are available for installations where it is required to duct air
to the inlet of the condenser. The plenum easily fits into place on the back of the unit,
and is provided with a flange for connecting 12-inch or 16-inch flexible ducting. A con-
denser return air plenum can substantially reduce air noise and allow the unit to operate
without drawing condenser air from the conditioned space. Refer to the table below for
configuration and application information.
NOTE — When installing the condenser return air plenum with a ceiling panel kit,
allow for a minimum separation distance of 2 feet between the unit discharge duct
and the return air duct. It is also recommended to direct the condenser discharge
air away from the condenser return air duct.
Plenum
Kit Duct
Flange
2OAC12 2OAC18 2OAC24 2OAC36 2OAC60
2DCP-1 12-inch
✓
2DCP-2 12-inch
✓ ✓
DCP-5 16-Inch
✓ ✓
Maximum Approximate
Equivalent Feet
25 50 50 50 100
Estimated External
Static Pressure
(.20) (.25) (.25) (.25) (.50)
2DPC-1, 2DCP-2, DCP-5
To estimate the “equivalent feet” of condenser duct,
add the length of the condenser intake duct run and the length of the
condenser discharge duct run, and add 6 equivalent feet per bend in the
duct. Make sure that you do not exceed the rated E.S.P. to avoid shut
down due to the high pressure cut-out.
12
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