NuTone CV352 Installation in Existing Construction, Layout and Planning, Locating Access Keys

INSTALLATION IN EXISTING CONSTRUCTION

LAYOUT AND PLANNING

The general layout and planning and the component locations are the same for existing construction.

See pages 2 and 3.

LOCATING ACCESS KEYS

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. What you're looking for is an accessible area that is free from obstructions and will accommodate the

2" tubing.

Let's say, for example, you have a two-story house and you want to locate the power unit in the basement. The first floor inlets can easily be connected to a trunk line which runs along the basement ceiling. However, you can't find interior walls on both the first and second floors which line up and are free from obstacles. How do you get from the basement to the attic?

Some of the “keys” you might find in your home are illustrated here.

Stacked Closets. 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 Fi

FIGURE 21

Built-In Appliances. In a home where the kitchen features built-in appliances, you'll often find a hollow space behind these appliances. If this space lines up with an obstruction-free interior wall above or a closet, this might be a “key” to your installation. In a ranch-style home, this “key” would provide access to run tubing from a basement located power unit to an attic trunk line. You may also want to consider running exposed tubing through cabinets or cupboards. See Figure 22.

Laundry Chute. Pictured here is tubing run from the basement to the attic through a laundry chute. A dumb-waiter would serve the same purpose. See Figure 22.

FIGURE 22

Cold-Air Return. A cold-air return often provides a straight run from basement to other levels of the house. The ductwork is easily cut for access. Seal around the tube when completing the installation. See Figure 23.

FIGURE 23

WALL INLET INSTALLATION

Use the following procedures for installation in existing construction.

1.See Figure 24. A small “Pilot” or “Locating” hole can be drilled behind baseboard toe strip to determine proper location of 21⁄2" diameter tubing hole in sole plate.

2.Measure the total thickness of the wall, including baseboard. One half of this wall thickness measured from the Pilot Hole (dimension “X”) will determine the proper location of the 21/2" tubing hole in the sole plate.

3.See Figure 24. Once desired inlet locations have been determined, cut a 21⁄2" hole in soleplate directly in line with proposed inlet location. Check through tubing hole to be sure no obstruction exists.

BASEBOARD

TOE STRIP

FIGURE 24 SOLE PLATE “X” PILOT HOLE

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