Installation In Existing Construction; Locating Access Keys In Existing Construction; Avoiding In-Wall Obstacles - NuTone VX1000C Installation Instructions Manual

I N S TA L L ATION IN EXISTING
Locating Access Keys in
Existing Construction
Unless your home is a ranch-style house where a single
trunk line can run directly through the attic or basement,
you should first investigate your house to find the key
to running your tubing from level to level. Look
for an accessible area free from obstructions that will
accommodate the 2" tubing.
If you understand how your existing home is constructed,
it can be relatively easy to find access routes to run the
tubing. Refer again to the illustration on page 2 as you
consider your home construction.
Some of the keys you might find in your home are
illustrated here.
Stacked Closets or Laundry Chute
Many homes will have an upstairs closet located directly
above a downstairs closet. It is easy to run the tubing
from one floor level to another inside these stacked clos-
ets. In these installations the tubing is often left exposed
inside the closets. See Figure 30. A laundry chute could
also provide access from basement to upper floors. You
may also want to consider running exposed tubing
through cabinets or cupboards.
Cold-Air Return
A cold-air return often provides a straight run from base-
ment to other levels of the house. See Figure 31. The
ductwork is easily cut for access. Seal around the tube
when completing the installation.
Use the following procedures for installation in existing
construction. Wall inlets in existing construction may be
accessed from below (basement or crawl space) or from
above (attic). Instructions apply to either method.
Starting from farthest wall inlet location, install each inlet
as described below. Working back toward power unit,
connect each inlet line and branch line into main trunk
line. See page tbd. Complete low voltage wiring as main
trunk line is continued back to power unit. Mount power
unit and complete wiring. See page 8.

Avoiding In-Wall Obstacles

The tubing which connects the inlet into the trunk line is
threaded through interior partition walls. After you've cho-
sen an inlet location, make sure the wall doesn't contain
some hidden obstacle which will prevent you from run-
ning tubing to the inlet.
C O N S T R U C T I O N
FIGURE 31
Exterior Walls.
The insulation in these walls will pre-
vent you from running tubing through them.
Electrical Wiring.
ing, but you should always make sure that tubing does
not damage the wiring. Electrical outlets and wall switch-
es are signs of wiring.
Ductwork.
Avoid choosing a section of wall that con-
tains ducting. If you see signs of ductwork-- such as floor
or ceiling registers—move your inlet location to another
section of the wall.
Plumbing.
Plumbing may or may not prevent you from
running tubing through a wall. If you must choose a
plumbing wall for an inlet location, be extremely careful
when making a cutout in the wall.
Wall Studs.
Make sure your location is between wall
studs. Locate studs by tapping walls, looking for electri-
cal outlet (usually fastened to studs), or noticing finishing
nails in the floor molding. Studs
12
FIGURE 30
Wiring may not obstruct your tub-