BIG ASS FANS powerfoil x2.0, Installation Manual

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8’–24’ POWERFOIL
®
X2.0 WASHDOWN & POWERFOIL
®
X2.0PLUS WASHDOWN
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46 Operating the Fan
Big Ass Fans are the highest quality, most meticulously engineered HVLS fans on the planet, moving a lot of air with their size, not
speed. Moving at a low speed means less energy used for operation, translating into more energy savings year-round. Follow the
procedures below to ensure the most efficient operation of your Big Ass Fan.
To ensure proper fan rotation:
1. Turn on the fan.
2. Verify that the fan is rotating in the counterclockwise direction (when viewed from below).
3. If the fan is not rotating counterclockwise, reverse the direction of rotation. See page 41 for instructions on changing the direction
of rotation.
Heating season
The Powerfoil
®
X2.0 fan returns heat from the ceiling to floor level more efficiently than small ceiling fans. For maximum energy savings,
the fan 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 (counterclockwise) will provide
enough air movement to circulate the hot air at the ceiling down to the floor without causing a draft.
Adjust the fan speed to the appropriate starting fan speed listed in the table below.
Floor-to-ceiling height (ft) Starting fan speed Display %
< 40 15 Hz 20–30%
≥ 40 20 Hz 30–40%
Stand directly below the tips of the airfoils with hand outstretched. If you feel a draft, slightly decrease the fan speed by 0.5 Hz (1–2%).
Repeat until the draft is no longer noticeable.
Cooling season
The cooling effect created by the breeze from the Powerfoil X2.0 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.
Adjust the fan speed to the appropriate starting fan speed listed in the table below.
Floor-to-ceiling height (ft) Starting fan speed Display %
< 40 25 Hz 40–50%
≥ 40 40 Hz 60–70%
Increase the speed of the fan until desired air speed or maximum fan speed is reached. In air conditioned facilities, increase the
thermostat setting by 2–7°F to save energy.