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INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
®
Surface-Mounted
Repeating Tone Door Chime
MODEL: LA-20 SERIES
PLANNING
• 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.
WIRING
CAUTION: Be sure house power is turned off when
wiring the transformer.
NOTE: When fastening chime wiring to wall studs and
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.
WIRING OPTIONS
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.
MOUNTING CHIME BASE PLATE
Refer to Figure 3. Pull wires through hole in base plate.
Secure base plate to wall with supplied screws.
MAKING WIRE CONNECTIONS
IMPORTANT: Be sure wires do not touch tone bars or
power units after making wiring connections.
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.
MOUNTING COVER
Insert tab (on back of cover) into slot in top of base plate.
MAINTENANCE INSTRUCTIONS
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.
REPLACEMENT PARTS OR SERVICE
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.
FIGURE 1
FIGURE 2
FIGURE 3
MOUNTING HOLE
MOUNTING HOLE
PULL WIRES
THROUGH HERE
120/110vAC
WIRING
1st DOOR
2nd DOOR
18-22 GA. INSULATED
2-CONDUCTOR WIRE
TRANSFORMER
COMMON WIRES
3rd DOOR
CHIME
TERMINAL
BOARD
TRANS
2-NOTE
RPT
1-NOTE