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INSTALLATION IN
EXISTING CONSTRUCTION
In an existing, finished building, installation of the Heat-
Vent Combination requires an accessible area (attic or crawl
space) above the planned location. If the location that has
been chosen for installation has a finished floor above it,
be certain there is sufficient space available to install the
housing and make the necessary duct connection.
PLANNING
Review “INSTALLATION IN NEW CONSTRUCTION” and
follow all instructions that apply.
CAUTION: Check the area above the planned location
to make sure that:
(1) Ducting can be installed or that the area is sufficient for
proper venting.
(2) Wiring can be run to the planned location.
(3) No wiring or other obstructions might interfere with
the installation.
INSTALLATION
1. The housing must be mounted between ceiling joists.
2. Refer to Figure 8. Mark ceiling for cutout.
Cutout dimensions: 14
1
⁄
8
" long x 9
7
⁄
8
" wide. Make cutout
in ceiling.
3. Follow steps under “PREPARATION” page 1.
4. From above, lower housing into the cutout and secure
hanger brackets. Install duct collar, connect duct, and
run wiring through box connectors.
5. From below, adjust housing so that it is flush with the
finished ceiling.
6. From below, make wiring connections as shown in figure 6.
7. Replace junction box cover.
8. Insert heater and ventilator plugs into proper receptacles.
9. Install grille.
FIGURE 7
FIGURE 8
14
1
⁄
8
"
9
7
⁄
8
"
GRILLE