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Rev. Date 040819

Fan Placement & Clearance

Sprinkler Systems and Fan Placement

In any installation where re sprinklers are in place, fans should not interfere with their correct

operation. Fans should be located no less than 3 feet below a sprinkler, and placed centrally to

each sprinkler quadrant. Our AirBrain motor controller can be connected to a re suppression

control system which will emergency-stop fans in case of re. Prior to installing fans, review all

codes applicable to sprinkler systems and fans to ensure code compliance (refer to NFPA 13).

Please call EnergyLogic for guidance (contact information can be found on page 74). However,

it is your sole responsibility to see that the installation is completed to code and that it is correct.

Other Information on Placement and Spacing

If possible, avoid mounting fans directly below lights or skylights to avoid any strobe effect

caused by moving airfoils.

Note, a large fan, 20 – 24 feet in diameter, performs best at 20 to 30 feet above the oor, but

acceptable performance has been demonstrated as low as 10 feet and as high as 50 feet. 24 -

foot fans should not be installed in locations that experience high winds.

If the building has a mezzanine, fans should be mounted so a person cannot reach a fan in any

way from the upper level/deck. Make certain that fans are positioned so that the airfoil tips are at

least 3 feet away from any area where a person may be able to extend outward to reach them.

HVLS fans should not be located near to air supply outlets or exhausting inlets of other HVAC

equipment. Supply air outlets can be congured to deliver air away from the HVLS fan or the fan

location should be oriented such that the outlet is pointing away from the fan and outside the

swept area of the fan. Exhaust fan inlets or other return air points creating a negative pressure

should not be within 1.5 times the diameter of the fan. These systems will diminish the capacity

of the HVLS fan. Proper systems orientation will provide an enhancement to the Indoor Air Quality

(IAQ) and occupant comfort. Refer to next page for illustration.

MacroAir Technologies EnergyLogic AVD3 User Manual

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