INSTALLATION HINTS
• This Door Chime is recessed into the wall. The white louvered grille
is flush-mounted to the wall surface and may be painted.
•IMPORTANT: If the door chime is connected to a NuTone Radio-
Intercom System, the chime tones will be heard at all inside and
outside speaker locations (chime will not sound at door speaker).
The Door Chime must be wired in accordance with the Chime-To-
Intercom information that is included in this literature.
• If a NuTone Radio-Intercom System is not used, a door speaker
may be installed at the outside of the front door
so chime tones will be heard at that location.
• Use the NuTone transformer that has been supplied with the door
chime.
LOCATION
• Select a central location so the door chime will be heard throughout
the house.
• Select pushbutton location(s). This door chime can accommodate
up to three (3) door operations.
MOUNTING THE CHIME
Required cutout dimensions: 5
3
⁄
8" wide x 7
1
⁄
4" high.
Housing: 2
1
⁄4" deep
Refer to Figure 2. Locate wall stud and prepare wall opening at
desired location.
WIRING
IMPORTANT: Be certain all wiring complies with local and
state codes.
Disconnect the house power when installing the transformer.
Keep electricity off until all wire connection have been made.
When securing the wiring to wall studs or ceiling joist, avoid
possible shorts that may occur if staples or clips penetrate the
protective wiring insulation.
1. Mount the supplied transformer to any junction or panel box.
Connect the white and black wires from the transformer to the
matching colors of house supply wires. Use approved wire
connectors to make all connections.
2. Refer to Figure 1. Run 18-2 gage wire from the transformer and
pushbutton(s) to the chime location.
3. If applicable, run NuTone IW-2 cable (No.22 twisted pair) from the
intercom master station to the chime location.
4. If applicable, run NuTone IW-2 cable (No. 22 twisted pair) from
remote speaker(s) to door chime location.
5. Pull wires through knockout in housing. Position the housing flange
flush to the finished wall surface and carefully secure the housing
with screws. CAUTION: The printed circuit board is fragile; DO
NOT use nails or hammer.
MAKING CONNECTIONS
1. Refer to Figure 1. Make wire connections to terminals shown as
applicable.
2.
Upon completion of installation, check whether chime is functioning
properly by pressing each door pushbutton, if the chime does not
operate, recheck your installation and the pushbutton(s) for poor
contact or loose connections.
Built-In Electronic Chime
MODEL: LA-174
FIGURE 1
1ST DOOR
WIRE
CONNEC-
TORS
GREEN
(COM)
YELLOW
(TRANS)
120/110 VOLT
AC WIRING
16 VOLT, 10 VATT TRANSFORMER
2ND DOOR
3RD DOOR
18-22 GA.
INSLUATED
WIRE
WIRE
CONNECTOR
TRANSFORMER HOOK-UP
18-22 GA. INSULATED WIRE.
MAX. OF 100 FT. EACH WIRE
FOR 22 GA.
PRINTED CIRCUIT BOARD
OPTIONAL CONNECTIONS
HOOK-UP TO RADIO-INTERCOM
Radio-Intercom connections to
provide chime functions in
intercom speakers. See Standard
Chime-to-intercom section for
specific connections.
18-22 GA. INSULATED WIRE
NUTONE IW-2
NUTONE IW-2
HOOK-UP TO EXTENSION
SPEAKERS (MAX. 3)
Use NuTone IW-2 (22 GA
Insulated 2-Conductor cable) –
200 Feet Maximum. Connect
Speaker to “EXTENSION
SPKR.” No. 1 and No. 2.
INSTALLATION INSTRUCTIONS
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