Instructions / Assembly

6
Installation – Wall-Vent Mounted (continued)
3
Installing the shutter
□ With the mounting nuts (D) and mounting bolts (E), secure
the 4 mounting brackets (C) to the shroud and then fasten
the unit to the frame.
NOTE: Mounting the long side of the L brackets with the
long side to the shroud may better t your installation and
help reduce vibration.
□ Seal off any gaps around the fan to allow the fan to
function at maximum efciency.
C
D
E
Installation — Triangular Gable Vents
This gable-mounted unit is designed for attics of average size and operates most efciently when air intakes are located around the
eaves. Alternatively, air intake may be from opposing gable vents, but never from roof or ridge vents. At least 600 sq. in. of net free
air intake is required per unit for safe and efcient operation. The motor operates on 120 V, 60 Hz, AC current. See the motor label for
amperage.
This unit may be mounted behind any static wall vent, or behind models VX1818 or CX2121 automatic shutters.
TIP: Much of the preparation, thermostat wiring, testing, and mounting to the frame can be
done before nal installation in the attic.