© 2015 MacroAir Technologies Toll Free: 866 668 3247 Fax: 909 890 2313 www.macroairfans.com 5
Rev. Date 090415
Fan Placement
Sprinkler Systems and Fan Placement
In any installation where fire sprinklers are in place, fan should not interfere with their correct
operation. Fans should be located no less than 3 feet below a sprinkler, and placed central to
each sprinkler quadrant. Our AirBrain motor controller can be connected to a fire suppression
control system, which will emergency-stop fans in case of fire. Prior to installing fans, review all
codes applicable to sprinkler systems and fans to ensure code compliance (refer to NFPA 13).
Please call our Technical Department for guidance (Technical Support contact information can be
found on page 50). 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 floor, but acceptable performance has been demonstrated as low as 10 feet and as high as 50
feet.
If the building has a mezzanine, fans should be mounted so a person can not 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.
Fans should not be located directly beneath any air discharge. This includes air conditioning units
and evaporative coolers. Such equipment can be used effectively in conjunction with HVLS fans
but the discharge must be located outside of the swept area of the fan.
