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Eubank EAA/EGA Wall Mount AC Installation & Operation Manual
03/2021 Rev.5
Ducting
Extensions should be cut ush with the inside wall for applications without duct work.
Applications using duct work should be designed and installed in accordance with all applicable safety
codes and standards. Eubank
®
strongly recommends referring to the current edition of the National
Fire Protection Association Standards 90A and 90B before designing and installing duct work. The
duct system must be engineered to insure sufcient air ow through the unit to prevent over-heating
of the heater element. This includes proper supply duct sizing, sufcient quantity of supply registers,
adequate return and lter area. Ductwork must be of correct material and must be properly insulated.
Duct work must be constructed of galvanized steel with a minimum thickness of .019 inches for the
rst 3 feet (1 meter). Ductwork must be rmly attached, secured and sealed to prevent air leakage. Do
not use duct liner on inside of supply duct within 4 feet (122cm) of the unit.
Galvanized metal duct extensions should be used to simplify connections to duct work and grilles. Use
fabric boots to prevent the transmission of vibration through the duct system. The fabric must be U.L.
rated to a minimum of 197°F (92°C).
Minimum Airow Requirements
The duct system must be engineered to assure sufcient air ow through the unit even under adverse
conditions such as dirty lters, etc. Use Table 6 below and Table 1, CFM at External Static Pressure
(Wet Coil) in section 1.4.
BASIC MODEL MAXIMUM STATIC
EAA1020/1024 .50
EAA1030/1036/1042 .50
EAA1048/1060 .50
EGA1072 .50
Table 10 Maximum Static Pressure
(For units with 2" Pleated Filters)
3.5 Fresh Air Hood (non-economozer air conditioners only)
The fresh air hood is located on the inside, behind the slots on the bottom front panel. To access the
hood, remove the screws that hold the front panel. The air ow can be adjusted from no (0%) fresh air
to approximately 15% of rated air ow of fresh air, in 5% increments. The hood is shipped from the
factory in the closed position (no fresh air). To provide fresh air, remove the two screws on either side
of the hood and reposition as desired.
Figure 11. Fresh Air Hood Damper, Models 1024-1072
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