MaxPower Corp OceanAire Portable - Manual (Page 13)

EVAPORATOR INLET AIR PLENUM
DEP, Evaporator Plenums are used to allow a return air duct to be attached to the unit. The
plenum easily attaches with mounting screws in place of the evaporator grille. The plenum
transitions the return air opening to 10 inch round on the PAC10 & 12, and to a 12 inch round on
the PAC18 and 24. 16 inch duct is used on the PAC36 & 60.
25 equivalent feet of 10 inch round duct can be applied to the PAC10 and 12. 50 equivalent feet
of 12 inch round duct can be applied to the PAC18 and 24. 50 equivalent feet of 16 inch round
duct can be applied to the PAC36. 100 equivalent feet of 16 inch duct can be applied to the
PAC60. This air handling capacity is also found on the OceanAire Polaris water-cooled units.
To calculate “equivalent feet”, add the length of the supply duct run and the length of the return
duct run...allowing for elbows( adding 6 equivalent feet per 90° elbow). This is total equivalent
feet.
Evaporator plenums can substantially reduce air noise and increase the number of options for
solving difficult cooling problems.
AirBoss has a dedicated blower for the evaporator section and a dedicated blower for the
condensing section. So, the “equivalent feet” may be applied to either or both sections at the same
time.
Model
Evaporator
Plenum
Round
Duct
Size
Fits
PAC
10
Fits
PAC
12
Fits
PAC
18
Fits
PAC
24
Fits
PAC
36
Fits
PAC
60
DEP-10
Size/Fits
10 inch Yes Yes No No No No
DEP-12
Size/Fits
12 inch No No Yes Yes No No
DEP-16
Size/Fits
16 Inch No No No No Yes Yes
Maximum Approx
Equivalent Feet
(ESP)
25
(.15)
25
(.15)
50
(.25)
50
(.25)
50
(.25)
100
(.50)
airbossmanpg11 11
View of units with
the optional evapora-
tor plenum installed.