Do you provide voltage and frequency control for the fan or just voltage control via a triac? If triac control, how do you protect the fan motor from burning at low speeds or humming noise? Please give details.
3 months, 2 weeks ago

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Emil
San Jose, CA, USA
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Answer:
Please contact our Technical Service Department at 800-637-1453 for assistance.
3 months, 1 week ago

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Anonymous
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I have installed a Broan QT90E and the users complain it does too good a job of removing the hot air from the bathroom (it's 90CFM rating is a slightly higher than the calculated requirement). Can the 57W be used to vary the fan speed without damaging the QT90E?
3 months ago

by
Rick
Maryland
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Answer:
It is recommened to use the 78w/78V. Others may cause a motor humming noise.
If neededTechnical service # is 1-800-637-1453.
3 months ago

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Anonymous
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