NuTone LA-20 SERIES Leaflet

®

• Your NuTone Door Chime is designed for three-door

operation; First Door – repeating signal; Second Door –
two-note signal; Third Door – one-note signal.

• If the home is multiple-level or large ranch style, two or more

chimes should be used to provide adequate coverage.

ceiling joists, care must be taken to avoid possible
“shorts” that might be created by allowing staples or
clips to cut through the protective wiring insulation.
1. Refer to Figure 1. Mount the transformer to a convenient

junction box (attic location is not recommended) or circuit
breaker box. Connect house power leads to transformer
leads – black to black and white to white.

2. Refer to Figure 2. Label all wires. Run 18-22 gauge

2-conductor wire from transformer and pushbuttons to
chime location.

This chime sounds three different tones; a repeating tone,

a two-note tone, and a one-note tone. The selection of what
tones to use at each door is a matter of owner's choice. If
you do not want to use the repeating tone, simply do not wire
a pushbutton to the terminal marked RPT. Select what tone
you want played by each pushbutton, and then wire the
chime accordingly.

Refer to Figure 3. Pull wires through hole in base plate.

Secure base plate to wall with supplied screws.

Refer to Figure 2. Make wire connections to terminals as

shown. Using wire connector, join all common wires.
NOTE: Upon completion of installation, if the chime does not
operate properly, check the pushbutton(s) for poor contact or
loose connections.

Insert tab (on back of cover) into slot in top of base plate.

If chime plungers should ever become “sluggish” in their

movement, clean plungers with a nonflammable cleaning fluid
and wipe dry.
CAUTION: NEVER OIL CHIME PLUNGERS.

Contact your local Authorized NuTone Parts Outlet or

Service Center. If you are unable to do so, contact:
NuTone Inc., Madison and Red Bank Roads, Cincinnati,
Ohio 45227. Attention: Department of National Field Service.