Netfloor Enspire Zonal UFAD System on-line Brochure

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3. Air Return
Returned air is returning through suspension ceiling void or through high level in the room without suspension ceiling. Another option is to return air through access floor void, but this is not recommended in the Enspire system.

3.1 Suspension Ceiling Return:
In the suspension ceiling return, the return air is drawing to the AHU at high level through the suspended ceiling void. Outside fresh air and return air from light fixtures or perforated ceiling panels, are mixed and filtered, cooled through the AHU, and then distribute through the raised access floor plenum.

The suspension ceiling return is good for new office, and old office space renovation.

3.2 Room Return - no suspension ceiling:
In room return design, the return air is drawing to the AHU at high level in the room. Outside fresh air and return air are mixed and filtered, cooled through the AHU, and then distribute through the raised access floor plenum.

Room return is good for new high-rise office building, or old office of interior space by limited floor to ceiling height.

3.3 Fresh outside air is imputing from outside at high level, or through central ventilation system at required ratio.

3.4 Extract air distributing outside at high level of the AHU covering space, and through utility rooms such as kitchen and restroom.

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