INSTALLATION & OPERATING INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
INTERCOM SYSTEM FOR HOME OR
OFFICE
A typical system will include inside intercom speakers and door
speaker(s) if door answering is required. A MAXIMUM OF TEN
(10) INSIDE REMOTE SPEAKER STATIONS AND TWO (2)
DOOR SPEAKERS. Intercom speakers designed for outside
installation are available. The Amplifier has provisions for
connecting optional input equipment; i.e.: radio/music, electronic
chime.
RADIO/MUSIC SOURCE – A separate NuTone Radio-Intercom
System.
ELECTRONIC CHIME – A NuTone Electronic or Musical Chime
may be connected to the amplifier to provide chime tones in the
intercom speakers.
NOTE: Models IA-28 or IA-29 chime modules cannot be used
with the IMA-516.
INSTALLATION DON'TS
1. Don't locate inside speaker stations on indoor exterior walls.
2. Don't place more than one speaker station in a room.
3. Don't locate two speaker stations in a common wall between
rooms; rooms that share a common wall should not have the
speaker stations on that wall.
4. Don't place a speaker station so it is facing another station,
even if the other station is across a hallway in another room.
5. Don't locate speaker stations where doors or furniture will
interfere with the operation of the speaker.
6. Don't locate the amplifier in an area where temperatures will
exceed 120°F or fall below 32°F.
WIRING INFORMATION
CAUTION: This system is designed to be used with NuTone
wire/cable. No other wire should be used. use of wire other than
NuTone specified will cause improper operation.
*
NuTone Model IW-6 – Use for connection between Amplifier
and intercom speakers. IW-6 is a 3-twisted-pair cable (3 pairs of
22 gauge wire with variable twists; color-coded).
*
NuTone Model IW-2 – Use for connections specified in
diagrams. IW-2 is one twisted-pair cable (22 gauge).
IMPORTANT
1. Observe local code requirements.
2. Route all system wiring as far as possible (at least 12") from
household power wiring, lamp dimmers, furnace controls, etc.
3. Avoid stapling cables.
4. Be sure amplifier is properly grounded to an earth ground
source.
IMPORTANT: NuTone cannot be responsible for improper radio-
intercom operation that results from interference generated by
light dimmers, fluorescent lighting fixtures, and similar electrical
products. Such interference must be corrected at the source. As
an aid to help reduce this interference, all remote speaker wires
and cables must be placed at least 12 inches from any A.C.
power wiring.
Central Amplifier
MODEL IMA-516
SPEAKER REFERENCE CHART
(Use applicable rough-in and specified wire with all models)
MODEL NUMBER DESCRIPTION
Inside Intercom Speakers
ISB-53 series Speaker with controls. Recess mounts with Model
IR-3 Rough-In or may be surface-mounted with
Model IA-15.
IS-75 5" Paging Speaker - Roto-groove. Recess mounts with
Model IR-75 Rough-In.
IS-76 8" Paging Speaker - round. Recess mounts with Model
IR-70 Rough-In.
ISA-78 Series 8" Paging Speaker - rectangular. Recess mounts with
Model IR-80 Rough-In.
IC-501 Regulates volume in Inside Paging Speakers IS-75,
IS-76 or ISA-78.
Outside Intercom Speakers
ISB-53LW Speaker with controls - surface mounted.
ISA-77 8" Paging Speaker - surface-mounted.
IS-79 8" Paging Speaker - recessed. Recess mounts with
Model IR-9 Rough-In.
Door Speakers
IS-67 series Door Speaker with lighted pushbutton - molded.
Recess mounts with IR-6 Rough-In.
IS-69 series Door Speaker with lighted pushbutton - Classic Cast
Metal. Recess mounts with IR-6 Rough-In.
ISA-63 Door Speaker - no pushbutton.
Molded - surface-mounted.
ISB-64 Door Speaker with unlighted pushbutton.
Molded - surface-mounted.
IA-70 Surface-mounting frame for recessed door speakers.
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