Ventamatic, Ltd.
| P.O. Box 728, Mineral Wells, TX 76068 ▪ Phone: (800) 433-1626 ▪ www.MYMAXXAIR.com
5
Step 5: Facing Installation
•
Use 2 X 6 boards to create a square with the inside dimensions being the same distance as the shortest
dimension of the shutter rough opening (i.e. 26” for a 24-in model, etc.).
•
Nail or
screw in the facing to
the framed opening.
TIP:
If doing a joist-out installation, use lumber from the support pieces as the long cuts and the removed joists as the
short cuts.
TIP:
For a quieter fan, build a second box frame the same size as the fan frame and install it between the frame and
facing. Ensure that there is still a minimum of 36” clearance between the fan blades and attic roof.
Step 6: Prepare and Install Fan Assembly
Belt Drive Models
•
Remove hardware and remount the motor on
the top side of the struts.
•
Position fan belt on the pulleys and adjust it to
fit snugly with about 1/2” deflection.
DO NOT
OVERTIGHTEN THE BELT!
•
Tighten fan blade set screw and make sure the
hub of the fan blade assembly is facing up
towards the roof.
Direct Drive Models
•
Remove fan blade and wire the motor first.
•
Replace and secure the blade so it is about
half-in and half-out of the hub.
•
Tighten fan blade set screw before operating
and make sure the hub of the fan blade
assembly is facing up towards the roof.
Joist-In Installation
Joist-Out Installation
