BIG ASS FANS 8'-24' Powerfoil X, Installation Manual

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8’ - 24’ POWERFOIL® X
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44 Operating the Fan
Heating Season
The Powerfoil® X fan returns heat from the ceiling down to floor level using a more efficient method than small ceiling fans. For
maximum energy savings, the Powerfoil® X should be operated continuously during the heating season and should not be operated in
reverse (clockwise). Big Ass Fans are designed to operate efficiently at very low speeds, so turning the fan very slowly in the forward
direction (counter-clockwise) will provide enough air movement to circulate the hot air at the ceiling down to the floor without causing
drafts. Follow the instructions below for proper fan operation:
1. Turn on the fan.
2. Verify that the fan is rotating in the counter-clockwise direction (when viewed from below).
3. If the fan is not rotating counter-clockwise, reverse the fan direction.
Optional Operating Instructions
Adjust the fan speed to the appropriate Starting Fan Speed listed in the table below.
Floor to Ceiling Height (ft) Starting Fan Speed
< 40 25 Hz
≥ 40 40 Hz
Stand directly below the tips of the fan blades with hand outstretched. If you feel a draft, slightly turn down the fan speed (0.5). Repeat
until the draft is no longer noticeable.
Cooling Season
The cooling effect created by the breeze from the Powerfoil X fan keeps occupants comfortable with the thermostat at a higher setting.
During the cooling season, every degree higher that the thermostat is reset reduces the energy consumed by the air conditioner by
1.5-2%. To minimize energy usage during the cooling season, operate the fan only when building occupants are present.
1. Turn on the fan.
2. Verify the fan is spinning in the counter-clockwise direction (when viewed from below).
3. If the fan is not spinning counter-clockwise, reverse the direction of the fan.
Optional Operating Instructions
Adjust the fan speed to the appropriate Starting Fan Speed listed in the table below.
Floor to Ceiling Height (ft) Starting Fan Speed
< 40 15 Hz
≥ 40 20 Hz
Increase the speed of the fan until desired air speed or maximum fan speed is reached. In air conditioned facilities, increase the
thermostat setpoint by 2-7°F to save energy.