9
ELECTRICAL WIRING
Unit comes wired to a junction box Additional wiring will be required to get power to unit, which is not
supplied with this product.
Motor Starters, disconnects, wiring, overloads, and thermal protection are NOT provided by the
Manufacturer
All Field wiring should be performed by a qualified electrician and must meet all local and NEC codes.
Failure to install the proper electrical wiring, thermal protection, and controls will void the warranty.
ROTATION - On single phase units motor rotation can be reversed by switching the black and red leads
in the motor, always refer to motor nameplate when switch leads for rotation. Three phase motors can be
reversed by switching leads L1 and L2. VERIFY rotation before operating the air cleaner to avoid over
amping the motor, voiding warranty.
After completion of the field wiring, turn the unit on to check for proper rotation. Rotation is marked on the
side of the blower housing for the standard forward curve blower. Optional direct drive BI blower wheels
will rotate in a clockwise direction when looking at the top of the motor, or the wheel should be spinning
from right to left as viewed through the exhaust grid. Backward rotation will result in a much lower air
flow, louder noise, and will over amp the motor. Check the motor nameplate before switching wires and
reversing rotation, to ensure the unit is operating at or below rated full load amp draw. Figure 6 illustrates
how to identify the proper rotation.
Figure 6 - Blower Rotation
