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Eubank 7AA1024H-1060H & 7AA2024H-2060H I&O Manual 03/2021 Rev.1
Minimum Airflow Requirements
WARNING
The duct system must be engineered to assure sufficient air flow through the Heat Pump, even
under adverse conditions such as dirty filters, etc. Proper engineering will insure longevity and
maximum performance from the Heat Pump unit.
Ducting
Extensions should be cut flush 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 sufficient air flow through the unit to prevent over-heating of the
heater element. This includes proper supply duct sizing, sufficient quantity of supply registers, adequate
return and filter area. Ductwork must be of correct material and must be properly insulated. Ductwork
must be constructed of galvanized steel with a minimum thickness of .019". Ductwork must be firmly
attached, secured and sealed to prevent air leakage. Do not use duct liner on inside of supply duct within
four feet 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 (UL-181) to a minimum of 197
o
F.
2.5 Fresh Air Hood
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 flow can be adjusted from no (0%) fresh air
to approximately 15% of rated air flow 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 3 - Fresh Air Hood Damper Adjustment
