18-HE58D1-3
3
Installer’s Guide
Foam Tape
Metal Washer
Lag Screw or Concrete
Anchor (supplied by installer)
Unit Flange
Lag Screw or Concrete
Anchor (supplied by installer)
Foam Tape
Hanging Bracket
Optional Washer and Screw
(supplied by installer)
Wall
Figure 2
INSTALLATION ON A STUD WALL
Mount the unit using the supplied hanging bracket kit as
described for installation on a concrete foundation. Use
appropriate fasteners for a stud wall (supplied by in-
staller). Be sure the fasteners are properly selected to
support the load. Note that the hole layout on the integral
mounting flanges and the hanging bracket are spaced for
16” or 24” on center framing patterns.
INSTALLATION ON OVERHEAD FLOOR JOISTS (Access
Door Swings Open Down)
The unit may be fastened directly to floor joists using the
hanging bracket and integral flange. Mount as described
for installation on a concrete foundation wall except use
appropriate fasteners for a floor joist supplied by installer.
Be sure the fasteners are properly selected to support the
load.
ATTIC INSTALLATION
INSTALLATION ON ROOF RAFTERS
The unit may be mounted directly to the roof rafters. (See
Figure 3) Mount as described for installation on a con-
crete foundation wall except use appropriate fasteners for
a roof rafter. Be sure fasteners are properly selected to
support the load.
Figure 3
SUSPENSION OF ERV FROM ROOF RAFTERS
Suspend unit from the roof rafters. The unit may be
suspended from the roof rafters by chains and springs,
supplied by the installer. See Figures 4, 4a, and 5.
Figure 4
Spring option is
an alternative to
the spring with
safety chain
