USF Motors and Controls 3
USF Controls Overview
The purpose of this document is to provide additional information on the different types of motors and controls
offered on the model USF fan. The USF is a configurable product, available with the following motor technologies:
1. AC Induction motor only 2. Vari-Green
®
Brushless Direct Current Motor (BLDC) and
potentiometer (dial)
3. Vari-Green Brushless Direct Current Motor (BLDC) with Hands/Off/Auto (HOA) controller
4. Vari-Green Synchronous Reluctance Motor (SynRM) with HOA controller
5. Induction motor with VFD and Vari-Green HOA controller
Wiring diagrams and specific information about the selected configuration can be found in the submittal.
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