NuTone Door LA 20 SERIES User Manual

®
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  
FIGURE 1  
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  
120/110vAC  
1st DOOR  
WIRING  
RPT  
junction box (attic location is not recommended) or circuit  
2nd DOOR  
breaker box. Connect house power leads to transformer  
2-NOTE  
leads – black to black and white to white.  
TRANS  
2. Refer to Figure 2. Label all wires. Run 18-22 gauge  
2-conductor wire from transformer and pushbuttons to  
18-22 GA. INSULATED  
2-CONDUCTOR WIRE  
1-NOTE  
TRANSFORMER  
chime location.  
COMMON WIRES  
WIRING OPTIONS  
CHIME  
TERMINAL  
This chime sounds three different tones; a repeating tone,  
BOARD  
3rd DOOR  
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.  
FIGURE 2  
MOUNTING HOLE  
MOUNTING CHIME BASE PLATE  
Refer to Figure 3. Pull wires through hole in base plate.  
Secure base plate to wall with supplied screws.  
PULL WIRES  
THROUGH HERE  
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 HOLE  
FIGURE 3  
MOUNTING COVER  
Insert tab (on back of cover) into slot in top of base plate.  
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.  
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.  
 

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