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

INSTALLATION 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 illustrations on pages 3-4 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 closets. 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 basement
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
26. Complete low voltage wiring as main trunk line is
continued back to power unit. Mount power unit and
complete wiring. See pages 31-33.

AVOIDING IN-WALL OBSTACLES

The tubing which connects the inlet into the trunk line is
threaded through interior partition walls. After you've
chosen an inlet location, make sure the wall doesn't
contain some hidden obstacle which will prevent you from
running tubing to the inlet.
CONSTRUCTION
FIGURE 31
Exterior Walls .
prevent you from running tubing through them.
Electrical Wiring .
tubing, but you should always make sure that tubing does
not damage the wiring. Electrical outlets and wall
switches are signs of wiring.
Ductwork .
Avoid choosing a section of wall that
contains 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
electrical outlet (usually fastened to studs), or noticing
finishing nails in the floor molding.
12
FIGURE 30
The insulation in these walls will
Wiring may not obstruct your