Installation GL16
2-18
Figure 2-26: The exhaust blower motor should be
turning in the direction of the arrow.
Figure 2-27: The direction of the exhaust blower
motor is corrected by interchanging
wires in the main electrical box.
Exhaust Blower Motor Rotation Checkout
Follow these steps to verify the correct rotation
of the exhaust blower motor.
1. Turn the power ON at the main discon-
nect switch.
2. Start the unit by pressing the green
START button and immediately press a
red STOP button.
3. Look at the vented end cap of the blower
motor as it slows down. The rotation di-
rection should be clockwise (Figure 2-26).
WARNING
Only a qualified electrician
should make or correct any
electrical connections in or
to the unit.
4. If the rotation of the exhaust blower mo-
tor is not clockwise, turn the power OFF
at the main disconnect switch.
5. Open the main electrical box.
6. To correct the rotation direction, discon-
nect and interchange any two of the three
wires connected to terminals L16, L17,
and L18 (Figure 2-27). For single phase,
check the specification plate on the mo-
tor for proper connection.
7. Close the door to the main electrical box.
8. Repeat Steps 1 to 3 to make sure the ex-
haust blower motors are rotating in the
correct direction.
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