Owners Manual

ACCESSORIES
DISCHARGE DUCT ADAPTER
Discharge duct adapters are available for applications where ducted evaporator
discharge is required. The adapters can be easily installed on the unit without fasteners,
and can be used for either vertical or horizontal ducting. The standard discharge grille is
removed and the 2DDA is attached in the grille opening.
2DDA-6 for model 2OACH12, converts the evaporator discharge to a 6-inch
diameter round duct.
2DDA-10 for models 2OACH18 and 2OACH24, converts the evaporator
discharge to a 10-inch diameter round duct.
2DDA-16 for models 2OACH36 AND 2OACH60, converts the evaporator
discharge to a 16-inch round duct.
When used in conjunction with the evaporator return air plenum, the unit can provide a
closed-loop cooling solution for a given space without the influence of any outside air.
Adapter
Model
Round
Duct
Size
2OACH12 2OACH18 2OACH24 2OACH36 2OACH60
2DDA-6
6-inch
✓
2DDA-10
10-inch
✓ ✓
2DDA-16
16-inch
✓ ✓
Maximum
Approx.
Equivalent Feet
25 50 50 50 100
Maximum
E.S.P
.15 .25 .25 .25 .50
15