Replacing the Blower Wheel

To avoid electrical shock or property damage, move the power switch to OFF and disconnect power.

1. Loosen set screw using a hex-key.

2. Attach wheel puller to OD of wheel hub by tighten 3 hex head bolts down with 1/ 2 inch wrench, making sure to keep the puller centered along the wheel/shaft axis.

3. Turn screw to remove the wheel from the motor shaft.

4. File down the burr on the shaft left by the set screw, to allow wheel to slide onto shaft freely.

5. Install wheel with hub set to end of shaft and tighten set screw.

6. Turn on blower and verify that pressure is 1.7 inwc at 60 Hz (1.4 inwc at 50 Hz) or greater.

If less than 1.7 inwc at 60 Hz (1.4 inwc at 50 Hz) verify that flue is not obstructed and clean as needed to achieve 1.7 inwc.