NuTone VX550 Installation Guide download pdf (Page 14)

Drilling the Access Holes

Once you are certain that you’ve located the center of the

wall directly above the inlet location, use a 2½” hole saw to

cut the access hole through the wall plate or header and into

the wall cavity. (A 1/2” drill is recommended.) Carefully

remove the drill from the hole.

Now, use a flashlight to inspect the wall cavity through the

access hole. Make sure no hidden obstacles will interfere

with the tube installation. (If this inspection reveals an

obstacle, find a new inlet location.) Repeat this procedure in

your attic or basement until your access holes are drilled.

Assembling the Inlet Tubing

Once you’ve drilled the access holes, you assemble the inlet

tubing and insert it into the wall cavity. Refer to “Working

With Plastic Tubing” on pages 5-6 before you begin to

assemble the inlet lines.

Select a section of plastic tubing and an 8” section of the

flexible inlet tubing. Apply cement to the outside of the

plastic tubing and to the inside of the flexible tubing. Join the

two pieces together and allow 5 minutes for them to dry.

Cut a piece of low voltage wire which is long enough for the

complete inlet line, allowing 6” for connections to the inlet

wall plate. Secure the wire to the tubing with electrical tape.

Tuck the 6” wire lead

inside the flexible tubing

so that it will not snag

inside the wall.

If space permits, you can

assemble the entire inlet

line by joining two

sections of tubing with a

stop coupling before

dropping the assembly

into the access hole.

(Remember to only glue the outside of the tubing when join-

ing two pieces of PVC tubing.) Oftentimes, tight attic spaces

require you to begin your drop and then join the second sec-

tion of tubing. Of course, the order of assembly, and the

length of tubing required depend on your attic space and

your wall height.

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NuTone VX550 Installation Guide Page 14