Page 1
1. INSIDE SPEAKERS –
(A) Don't locate inside speaker stations on exterior walls.
(B) Don't place more than one speaker station in a room.
(C) Don't locate two speaker stations in a common wall
between rooms.
(D) Don't place a speaker station so it is facing another
station, even if the other speaker station is across a
hallway in another room.
(E) Don't locate speaker stations where doors or furniture
will interfere with the operation of the speaker.
2. MASTER STATION – The master station has a built-in
speaker with separate controls; therefore, observe the
previous precautions when determining a location for
the master station.
3. DOOR SPEAKERS – Don't mount door speakers with
built-in pushbuttons out of normal reach; locate near
door and not more than 60" above floor. Door speakers
without pushbuttons can be mounted as desired near
door (adjacent wall, porch ceiling, or overhang can be
used but audio to system will be reduced).
4. CABLE LENGTHS – Observe cable limitations.
INSTALLATION DON'TS
OVERVIEW OF INSTALLATION PROCEDURE
INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS
Rough-In Frame
MODEL IR-105
Model IR-105 Rough-In Frame is to be used with
NuTone Model IM-4406 Series Radio/CDPlayer/Intercom
Master Unit.
This literature also includes information regarding the
accessory rough-ins for this Master Unit.
1. Determine the exact location of all components. See
“Planning Guide” below. Contact the architect, builder
or homeowner for the system plans. Check plans against
the “Installation Don'ts” section of these instructions.
2. Mount the rough-in frames for the master unit, remote
speakers and/or controls, and optional accessories.
Note that all components may not require rough-in
frames.
3. Run appropriate wiring to all component locations,
including 120vAC power wiring to the master unit rough-in
frame's transformers. See “Master Unit Rough-In Frame”,
page 4.
4. At this point, the rough-in installation is complete. See
the installation instructions packaged with the master
unit and other units for instructions to complete the final
installation of the system.
PLANNING GUIDE
To determine all the components required in the
installation, layout the system plans on the building plans
or on a sketch of the building.
Familiarize yourself with the available components by
studying the “Typical System” and “Representative Wiring”
illustration.
COMPONENTS
Where will the master station be located? How many
inside speakers will be required? What size inside
speakers will be used? Where will the inside speakers be
located? How many outside speakers will be required?
What size speakers will be used? Where will the outside
speakers be located? Will speakers without controls be
used? Where will these speakers be located? Where will
their remote controls be located? Will the system require
the use of door speakers? At what doors will these
speakers be located? Will portable speakers be used?
Where will wall receptacles for portable speakers be
located? Will an optional electronic chime be used? Will
an optional cassette player be installed?
TYPICAL SYSTEM
5" PATIO SPEAKER.
MOUNTED TO OUTSIDE
WALL
8" INSIDE SPEAKER
W/O CONTROLS
MOUNTED IN CEILING
5" INSIDE
SPEAKER
5" INSIDE
SPEAKER
8" INSIDE
SPEAKER
DOOR
SPEAKER
5" INSIDE
SPEAKER
MASTER
STATION
Page 2
2
CONTENTS OF CARTON
Check (✓) for the following IR-105 carton contents.
❏ Frame
❏ Transformer housing
❏ Transformer bracket
❏ (2) 801T transformers
❏ AM/FM antenna
❏ (4) No. 6x3/8˝ screws
❏ Installation instructions
PRECAUTIONS AND GUIDELINES
1. Observe local code requirements.
2. Route all system wiring as far as pratical (at least 12”)
from household power wiring, lamp dimmers, furnace
control, etc.
3. All remote station, remote control, volume contol and door
speaker wiring MUST return directly to rough-in frame.
4. Avoid stapling cables.
5. Be sure the IR-105 frame is properly grounded to an earth
ground source.
6. The IM-4406 is designed to be installed with only
NuTone specified wire. No other wire should be
used. The use of wire other than NuTone will void
all NuTone warranties and may result in faulty installation
and improper operation.
REMOTE STATION WIRING
An individual 6-wire cable (IW-6) must be connected from
each remote station or remote control location to the master
station’s terminal board.
Maximum station wire length: 750 ft.
Maximum total length of IW-6 cable per system: 4,000 ft.
MAXIMUM NUMBER OF REMOTE
STATIONS
The master station will accommodate up to 9 connections
at the terminal board. These connections can be any
combination of remote stations, remote controls or volume
controls. It will also accommodate 3 door speaker
connections.
If more than 9 stations are required, use the optional
Model Nº IA-440 expansion kit. This will allow an additional
6 connections at the master.
VOLUME CONTROL WIRING
An individual twisted pair (IW-2) must be connected from
each volume control location to the master station terminal
board.
Maximum wire length: 100 ft. IW-2. (Note: use S-143 18 ga
twisted pair wire for lengths up to 250 ft).
Only ONE NuTone speaker may be connected to each
volume control. Each volume control/speaker counts
as a remote station. Remember: The maximum remote
connections to the Master Station is 9. Adding the
optional IA-440 expansion module will increase the
system remote capability to 15 stations.
IMPORTANT! NuTone cannot be responsible for
improper system operation that results from
interference generated by light dimmers, fluorescent
lighting fixtures, and similar electrical products. Such
interference must be corrected at the source.
TO HELP REDUCE THIS INTERFERENCE, ALL WIRING
CONNECTIONS TO THE MASTER MUST BE PLACED
AT LEAST 12 INCHES FROM ANY AC POWER WIRING.
AVOID RUNNING INTERCOM WIRES PARALLEL TO
AC POWER WIRING.
WARNING! NEVER EXCEED A TOTAL OF 15 NUTONE
25 OHM SPEAKERS ON THIS SYSTEM.
WIRING SPECIFICATIONS
Use NuTone IW-6, 3 twisted pair for connecting:
• Remote controls to master
• Remote stations to master
Use NuTone IW-2, 22 ga. twisted pair for connecting:
• Door speakers to master
• Remote controls to speakers
• Speaker volume control (IC901) to master
• Speaker volume control (IC901) to speakers
• Electronic chime audio output to master
• Pushbutton to chime module
Use NuTone S-143, 18 ga. twisted pair for connecting:
• Pushbutton to electronic chime
• Electronic chime to chime transformer
• Door release
Use Nº14/2 power cable with ground, Class 1 UL Listed
(Observe local codes) for connecting:
• Transformers to 120v AC
Use shielded audio cable for connecting external audio
sources to the master station.
NOTE: NEVER
connect more than one remote
station to a set of screw terminals.
WARNING! NEVER USE STANDARD 8 OHM STEREO
SPEAKERS ON THIS SYSTEM. USE ONLY NUTONE
SPECIFIED SPEAKES ON THIS MASTER.
IM 4406 SYSTEM WIRING AND PRECAUTIONS
The 801T transformers contain an internal fuse.
THE TRANSFORMER WILL FAIL INSTANTLY
IF THE SCREW TERMINALS ARE SHORTED.
Page 3
3
NUTONE S-143
100' MAX.
NUTONE S-143
100' MAX.
DR1/DR2
DOOR
RELEASE
IR-105 ROUGH-IN
WIRE NUT
PB1 DOOR RELEASE PUSHBUTTON
MOUNTS IN FRONT PANEL OF MASTER
301T* TRANSFORMER
MOUNTED IN CIRCUIT
BREAKER PANEL
*NOTE: DO NOT MOUNT DOOR
RELEASE TRANSFORMER IN
THE IR-105 ROUGH-IN
REPRESENTATIVE WIRING DIAGRAM
OF DOOR RELEASE CONNECTIONS
IM-4406 REPRESENTATIVE WIRING
INSIDE
ANTENNA
NUTONE CHIME
TRANSFORMER
PUSHBUTTON
18/2 (NUTONE S-143)
OPTIONAL
ELECTRONIC
DOOR CHIME
200' MAX
NUTONE
IW-2
DOOR
SPEAKER
5" PATIO
SPEAKER
W/CONTROLS
NUTONE
IW-2
NUTONE
IW-6
18/2 300' MAX
DOOR SPEAKER MODELS WITH CHIME
PUSHBUTTON ALSO REQUIRES 18/2
(S-143) TO CHIME LOCATION OR TO
MASTER IF CHIME MODEL IS USED.
IA-6C
RECEPTACLE
IA-6
PLUG
OPTIONAL WIRING
FOR DOOR
RELEASE
DR-1/DR-2
DOOR RELEASE
(OBSERVE
LOCAL CODE)
100' MAX S-143
100' MAX S-143
301T
TRANSFORMER
120V 60HZ
(CLASS 1)
INSIDE
SPEAKERS
W/CONTROLS
NUTONE IW-6
OUTSIDE
REMOTE
CONTROL
OUTSIDE
SPEAKER W/O
CONTROLS
INSIDE
REMOTE
CONTROL
INSIDE
SPEAKER W/O
CONTROLS
NUTONE
IW-6
(2) 801T
TRANSFORMERS
SECONDARY:
18V, 72VA
EARTH
GROUND
ATTIC
14 GA
300' MAX
NUTONE IW-2
PUSHBUTTON FOR
OPTIONAL CHIME
MODULE
14/2 WITH GROUND
(OBSERVE LOCAL CODES)
120V 60HZ (CLASS 1)
IW-6
IW-2
IW-2
DESKTOP
FRAME WITH
5" REMOTE
IM-4406
MASTER
STATION
IM-4406
MASTER STATION
IR-105 ROUGH-IN
OPTIONAL
MUSIC SOURCE
OPTIONAL
MUSIC SOURCE
IN
IN
OUT
120V. 60Hz (CLASS 1)
(OBSERVE LOCAL CODE)
SHIELDED
AUDIO
CABLES
Page 4
MASTER UNIT ROUGH-IN FRAME
4
MODEL IR-105 FRAME
1. REQUIREMENTS – Mounts between 16" center-tocenter wall studs, with a minimum wall depth of 31⁄2". Allow
at least 4" from edge of frame to adjacent wall or cabinet.
2. Refer to Fig. 1. Position frame only as shown. Install
square and level at a convenient operation height (60"
above floor to top of frame is normal for most
installations).
3. Using screws or nails, mount frame between wall studs,
securing through mounting slots in side of frame. Slots are
provided to allow frame to be adjusted to fit flush against
the finished wall surface.
FOR EXISTING WALL CONSTRUCTION – Make wall
cutout 141⁄2" wide by 91⁄8" high between wall studs.
TRANSFORMER INSTALLATION
801T TRANSFORMERS (2 supplied with rough-in)
1.Place transformer housing into IR-105 frame as shown in
Fig. 1.
2.Pull 120vAC house wiring through the hole in the
bottom of transformer housing and secure with box
connectors (not supplied).
3.Refer to Fig. 2. Attach the 801T transformer to the
transformer mounting bracket using the clamp/screw or
threaded hub/nut on bottom of each transformer. Orient
the transformers as shown.
4.Connect transformers’ primary leads to 120vAC house
wiring as shown in illustration. Be sure ground wires
are connected to transformer brackets.
5.Place transformers and bracket into the transformer
housing being careful not to trap the transformer and
house wires between bottom of transformer bracket and
top of support tabs on sides of transformer housing.
6.As illustrated, secure transformer box with four screws.
TRANSFORMER
HOUSING
BE SURE GROUND WIRE
IS CONNECTED TO
GROUND SCREW ON
TRANSFORMER
MOUNTING BRACKET
120vAC
801T TRANSFORMERS AND BRACKET/HOUSING
TRANSFORMER HOUSING
4"
4"
4"
60"
31⁄2"
FIG 1
FIG 2
IMPORTANT WARNING!
THE POWER TRANSFORMER CONTAINS
AN INTERNAL FUSE.
DO NOT SHORT THE LOW VOLTAGE
CONNECTING SCREWS OF THE TRANSFORMER
OR THE TRANSFORMER WILL BE DESTROYED!
TRANSFORMER
BRACKET
4"
Page 5
INSTALLING THE ANTENNA
5
The folded dipole antenna has a 20' lead which may be
increased by attaching standard 300 ohm, twin lead (T.V.
antenna wire) and should be installed using one of the
following methods.
INSTALLATION METHODS
DIMENSIONS
Antenna Span: 60 inches.
Lead Length: 20 feet.
STAPLING
Refer to Figure 3.
Use staples to attach twin lead wire to rafters or joists. Insert the
staple lengthwise in the plastic between the wires. Do not staple
across the wires.
NAILING
Refer to Figure 4.
Nails may be used to attach the twin lead wire to rafters or joists.
Place nails in the plastic between the two wires. Do not nail over or
through a wire. Do not wrap the twin-lead wire around
a nail.
Refer to Figure 5.
Nails may be used to attach the plastic center block and the two
plastic end caps. Use nail holes provided in these pieces.
ATTIC RAFTER INSTALLATION
1. Refer to Figure 6. Staple antenna to attic rafters horizontally.
2. Refer to Figure 7. Nail a 5 foot piece of scrap board horizontally
between rafters to provide a clear span of 60". Nail the center
block to the center of the board. Staple antenna leads to board.
CEILING JOIST INSTALLATION
Refer to Figure 8.
When attic space is limited, staple antenna to ceiling joists.
TWIN-LEAD CONNECTION
1. Run the 20 foot twin lead to the master unit.
2. Allow 12” of antenna lead with pin connector for connection to
master unit.
FIGURE 3
FIGURE 4
FIGURE 5
FIGURE 7
FIGURE 6
FIGURE 8
STAPLE
ANTENNA
THROUGH
CENTER
NAIL
ANTENNA
THROUGH
CENTER
CENTER BLOCK
NAIL HOLES
END CAP
Page 6
6
ACCESSORY ROUGH-IN FRAMES
NOTE: Refer to NuTone's catalog for model number
information of the rough-in(s) that are required for mounting
the components of the radio-intercom system.
Each rough-in has been illustrated in the following pages
of this booklet; a brief description of the installation
procedure is provided for each rough-in.
Refer to the installation instructions packaged with each
rough-in for a more detailed installation procedure.
HOUSING (for recess-mounted door speakers)
NOTE: Surface-mounted door speaker models are
available. For these models, no rough-in is required.
1. REQUIREMENTS – 2" from all sides of housing
and a minimum wall depth of 2".
2. DOOR SPEAKERS – Don't mount door speakers with
built-in pushbuttons out of normal reach; locate near door
and not more than 60" above floor. Door speakers without
pushbuttons can be mounted as desired near door
(adjacent wall, porch ceiling, or overhang can be used,
but audio to system will be reduced).
3. FOR FRAME CONSTRUCTION – Mount to stud
through side of housing.
FOR MASONRY CONSTRUCTION – Make opening
311⁄16" wide by 5" high and grout housing in place.
8" SPEAKER FRAME
(for 8" inside remote
speakers)
1. REQUIREMENTS – To accommodate the speaker
panel, allow a minimum clearance – on all sides of the
rough-in frame – of 2". Wall depth required: 23⁄4".
The speaker frame must be mounted in vertical
position.
2. NEW CONSTRUCTION – Position frame against wall
stud. Use nails or wood screws to secure frame to stud.
3. EXISTING CONSTRUCTION – Frame may be mounted
next to a wall stud or between wall studs. Mounting tabs
make mounting easy. Use frame as template for cutout.
See instructions provided with frame.
WALL RECEPTACLE (for portable speaker)
1. Mounts to single gang outlet box.
2. Mount single-gang outlet box to wall stud, generally
at same height as standard electrical outlet – 19" - 20"
above floor. If finished wall is in place, use outlet box
as template, and make cutout beside wall stud.
HOUSING
8" SPEAKER FRAME
2"
2"
2"
2"
2"
2"
2"
2"
2"
Page 7
7
8" SPEAKER FRAME
(for 8" model outside speaker)
1. REQUIREMENTS – Make an opening in an outside wall
101⁄16" wide by 111⁄16" high. The frame requires a minimum
wall depth of 3".
2. Locate frame where desired (generally, top of frame about
60" from ground). For wood construction, mount frame
through slots on each side. For other construction, frame
must be grouted in place.
5" SPEAKER FRAME
(for 5" inside remote speakers)
1. REQUIREMENTS – To accommodate the speaker
panel, allow a minimum clearance – on all sides of the
rough-in frame – of two inches (2").
Wall depth required: 15⁄8".
The speaker Frame must be mounted in vertical
position.
2. NEW CONSTRUCTION – Position frame against wall
stud. Use nails or wood screws to secure frame to stud.
3. EXISTING CONSTRUCTION – Frame may be mounted
next to a wall stud or between wall studs. Mounting tabs
make mounting easy. Use frame as template for cutout.
See instructions provided with frame.
5" OUTSIDE SURFACE-MOUNT
FRAME (supplied with 5” outside remote speakers)
1. Allow a minimum clearance on all sides of frame of 2".
2. Mount approximately 60" above floor.
3. Secure to wall through two mounting holes.
FRAME
(for remote controls)
IMPORTANT: Speakers that do not have built-in
controls require a separate remote control.
1. Remote Control should be located near the speaker
which it will control. Locate Remote Control where it
can be easily operated –
generally, 50" - 60"
above floor is satisfactory.
2. INSIDE HOUSE –
For recessed mounting, use
rough-in housing and mount
to wall stud.
OUTSIDE HOUSE – Must
surface mount to the outside
of the house. Secure to wall
through four mounting holes
(frame supplied with outside
remote controls).
8" OUTSIDE SPEAKER FRAME
5" INSIDE SPEAKER
FRAME
FRAME FOR INSIDE
REMOTE CONTROLS
3"
13⁄4"
2"
2"
2"
2"
50" - 60"
2"
2"
2"
2"
FRAME FOR OUTSIDE
REMOTE CONTROLS
5" OUTSIDE SURFACE
MOUNT FRAME
ACCESSORY ROUGH-IN FRAMES
(CONTINUED)
Page 8
Product specifications subject to change without notice.
4820 Red Bank Road, Cincinnati, Ohio 45227
Printed in U.S.A., Rev. 11/2002, Part No. 86360
T wo Year Limited Warranty
WARRANTY OWNER: NuTone warrants to the original consumer purchaser of its products that such products will be free from defects in materials or workmanship for a period
of two (2) years from the date of original purchase. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
During this two year period, NuTone will, at its option, repair or replace, without charge, any product or part which is found to be defective under normal use and service.
THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS OR TUBES, FILTERS, DUCT, ROOF CAPS, WALL CAPS AND OTHER ACCESSORIES
FOR DUCTING. This warranty does not cover (a) normal maintenance and service or (b) any products or parts which have been subject to misuse, negligence, accident,
improper maintenance or repair (other than by NuTone), faulty installation or installation contrary to recommended installation instructions.
The duration of any implied warranty is limited to the one year period as specified for the express warranty. Some states do not allow limitation on how long an implied warranty
lasts, so the above limitation may not apply to you.
NUTONE’S OBLIGATION TO REPAIR OR REPLACE, AT NUTONE’S OPTION, SHALL BE THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS
WARRANTY. NUTONE SHALL NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH
PRODUCT USE OR PERFORMANCE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may
not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. This warranty supersedes all prior warranties.
WARRANTY SERVICE: To qualify for warranty service, you must (a) notify NuTone at the address stated below or telephone 1/800-543-8687, (b) give the model
number and part identification and (c) describe the nature of any defect in the product or part. At the time of requesting warranty service, you must present
evidence of the original purchase date.
Date of Installation Builder or Installer
Model No. and Product Description
IF YOU NEED ASSISTANCE OR SERVICE:
For the location of your nearest NuT one Independent Authorized Service Center:
Residents of the contiguous United States Dial Free 1-800-543-8687
Please be prepared to provide:
Product model number • Date and Proof of purchase • The nature of the difficulty
Residents of Alaska or Hawaii should write to: NuTone Inc. Attn: Department of National Field Service, 4820 Red Bank Road, Cincinnati Ohio 45227-1599.
Residents of Canada should write to: Broan-NuTone Canada, 1140 Tristar Drive, Mississauga, Ontario, Canada L5T 1H9.
Rev. 03/2001
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