1
TO REGISTER THIS PRODUCT, VISIT WWW.NUTONE.COM
INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
Decorator
Door Chime
LA-70MA
Your NuTone Door Chime is designed for three (3) door
operation. It will sound either 8 or 4 notes for the front
door, one (1) note for a second door and a different note
for a third door. Use the NuTone transformer packaged
with the chime for best results.
When installing this chime and wiring has been
completed, check to make sure that the pushbuttons are
in good operating condition. When installed correctly,
they must not stick - meaning they must return to the
original position to open the circuit.
HELPFUL HINTS - This chime is “protection
packed”. Handle carefully as you would any
precision instrument. Comply with local
wiring codes when wiring the chime. Upon
completion of the installation, if the chime
does not operate, recheck your installation
with these instructions and wiring diagram.
If the chime still does not operate, check
the pushbutton(s) for poor contact or loose
connections.
INSTALLATION
Select a central location to insure an audible
signal throughout the home. For a large
ranch-style or multi-story home, two chimes
may be needed. Refer to Figures 2 and 3 for
Multiple Chime Wiring Information.
WIRING
NOTE: BE SURE HOUSE POWER IS
TURNED OFF WHEN INSTALLING THE
TRANSFORMER.
1. Mount the transformer to a convenient junction box (attic
location is not recommended) or circuit breaker box. Connect the
transformer leads to house power leads: black to black and white
to white.
IMPORTANT: All wiring connections must comply with national
or local codes. Run two-conductor, 18-gauge wire from the
transformer and pushbuttons to the chime location. Bring wires
through wiring access hole in the chime baseplate and fasten the
baseplate to the wall with screws provided. Connect wires to chime
terminal board as illustrated in Figure 1. For two-chime installation,
refer to Figure 2. For one chime with one two-note chime, refer to
Figure 3.
Selecting four or eight note operation
For the front door signal, you may select either four note or eight
note operation. Selector switch is shown in Figures 1, 2, and 3.
COMMON
TRANSFORMER
SIDE
REAR
FRONT
8
4
8 OR 4 NOTE
SELECTOR
SWITCH
SOFT
LOUD
VOLUME
37989
CAUTION: DO NOT CONNECT
OR DISCONNECT WIRES
WITH POWER APPLIED TO
TRANSFORMER
FOR USE WITH 16vAC
TRANSFORMER
COMMON
TRANSFORMER
SIDE
REAR
FRONT
8
4
8 OR 4 NOTE
SELECTOR
SWITCH
SOFT
LOUD
VOLUME
37989
CAUTION: DO NOT CONNECT
OR DISCONNECT WIRES
WITH POWER APPLIED TO
TRANSFORMER
FOR USE WITH 16vAC
TRANSFORMER
COMMON
TRANSFORMER
SIDE
REAR
FRONT
8
4
8 OR 4 NOTE
SELECTOR
SWITCH
SOFT
LOUD
VOLUME
37989
CAUTION: DO NOT CONNECT
OR DISCONNECT WIRES
WITH POWER APPLIED TO
TRANSFORMER
FOR USE WITH 16vAC
TRANSFORMER
FRONT
TRANSFORMER
REAR
COMMON
TRANSFORMER
SIDE
REAR
FRONT
8
4
8 OR 4 NOTE
SELECTOR
SWITCH
SOFT
LOUD
VOLUME
37989
CAUTION: DO NOT CONNECT
OR DISCONNECT WIRES
WITH POWER APPLIED TO
TRANSFORMER
FOR USE WITH 16vAC
TRANSFORMER
One Chime using the Transformer supplied FIGURE 1
FIGURE 2
FIGURE 3
One Electronic Chime with one 2-Note Chime
Two Electronic Chimes using one (1) Transformer, connected in phase. Transformer
is packaged with the chimes or use one (1) NuTone Model: 105T Transformer.
Side Door
Pushbutton
Front Door
Pushbutton
Rear
Door
Push-
button
Transformer
CAUTION: Do
not connect
or disconnect
wires with
power applied to
transformer.
For 2 Door
Operation: Do
Not Connect Side
Door.
Terminal
Panel on
Back of
Chime
To 115V 50/60 Hz A.C.
Power Supply
Side
Door
Push-
button
Front Door
Pushbutton
Rear
Door
Push-
button
To 115V
50/60
Hz A.C.
Power
Supply
Transformer
Transformer
Side Door
Pushbutton
Front Door
Pushbutton
Rear Door
Pushbutton
To 115V
50/60 Hz
A.C. Power
Supply
Loading ...
Loading ...
Loading ...
