NuTone Door LB 18 User Manual

INSTALLATION INSTRUCTIONS  
READ & SAVE THESE INSTRUCTIONS!  
Two-Note Door Chime  
MODEL: LB-18, LB-76 SERIES  
CHIME WIRING DIAGRAM  
CAUTION: DO NOT USE THIS TRANSFORMER  
FOR INTERCOM OR OTHER APPLIANCE  
Designed for two-door operation.  
Model LB-76 is designed to be used with a NuTone  
Radio-Intercom system.  
FRONT DOOR  
PUSHBUTTON  
FRONT  
TRANS  
REAR  
WIRING CAUTIONS: Before installing the transformer  
and chime, turn off the house power and leave it off until  
installation is complete.  
120v AC  
WIRING  
20-GAUGE INSULATED  
2-CONDUCTOR WIRE  
Carefully fasten wiring to wall studs and ceiling joists  
– avoid short circuits caused by staples or clips cutting  
through the wiring's insulation. When drilling into walls,  
be careful not to damage existing electrical cables.  
All wiring must comply with local codes or the  
National Electrical Code. If you are unfamiliar with  
electrical wiring installation methods, secure the  
services of a qualified electrician.  
COMMON  
WIRES  
NUTONE 101T  
TRANSFORMER  
REAR DOOR  
PUSHBUTTON  
NOTE: NuTone Model 101T (16V - 15VA) transformer  
is included with Model LB-76 Door Chime.  
FIGURE 1  
INSTALLATION  
1. NuTone chimes are designed to be seen as well as heard.  
Locate the chime on a wall at eye level.  
NUTONE IW-2 CABLE  
FROM RADIO-INTERCOM TO MODEL LB-76  
2. Mount the transformer to a convenient junction box or  
panel box. Connect the 120v AC house power leads to  
the transformer wires as follows: black to black;  
black to white.  
NOTE: Label all wires as they are run.  
3. Run 20-gauge, 2-conductor wire from the transformer  
terminals to the chime site.  
1
2
INTERCOM CHIME VOLUME CONTROL  
TERMINAL BOARD  
4. Wire and mount the pushbuttons. Run 20-gauge,  
2-conductor wire from the pushbutton to the chime site.  
5. If connecting Model LB-76 chime to a NuTone Radio-  
Intercom, run NuTone IW-2 cable (22-gauge, 2-conductor)  
from the Radio-Intercom to the chime site. For  
connections to the Radio-Intercom, see instructions  
packaged with the Radio-Intercom Master Unit.  
6. Pull all of the wires which have been run to the chime site  
through chime baseplate. Mount baseplate with supplied  
FIGURE 2  
HOMEOWNER'S INFORMATION  
screws.  
7. Connect wires as shown in Figure 1. Where applicable,  
make connections to Radio-Intercom as shown  
in Figure 2.  
8. Be certain the wires are not touching the chime tone bars  
or the power unit.  
9. Restore the house power to transformer and test chime.  
If chime does not respond to pushbutton, check wire  
connection.  
“Sluggish” chime plungers  
If chime plungers should ever get “sluggish” in their  
movement, clean the plungers with a non-flammable  
cleaning fluid and wipe dry.  
CAUTION: Never oil chime plungers.  
10. Install the chime over the baseplate.  
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