NuTone DESIGNER User Manual

INSTALLATION

INSTRUCTIONS

RADIO-INTERCOM SYSTEM

MODEL: IMA-3303 Series Master Station

This booklet contains information for installing the Master Station. All system wiring and rough-in frames should be installed before mounting and wiring the master station.

Refer to the installation instructions packaged with the rough-in frame for detailed wiring information. For more

IMA-3303 SERIES SYSTEM WIRING DIAGRAM

IMA-3303 SERIES REPRESENTATIVE WIRING ILLUSTRATION

USE THIS DIAGRAM FOR REFERENCE ONLY –

SEE IR-104 ROUGH-IN FRAME INSTALLATION

INSTRUCTIONS FOR DETAILED WIRING

detailed information on wiring and mounting other system components (i.e. speakers, remote controls, etc.), refer to the installation instructions packaged with each separate component.

MODEL IMA-3303 SERIES RADIO/INTERCOM MASTER IN IR-104 ROUGH-IN FRAME

Wiring Specifications

NuTone IW-2: 22 GA. Twisted Pair. NuTone IWA-3: Flat Ribbon Type 3-wire, 22 GA. cable. NuTone S-143: 18 GA. 2-conductor insulated. No. 14/2: 120v, 60Hz Power Cable: Class 1. U.L. Listed

(not supplied by NuTone).

14 GA.: Ground Wire (not supplied by NuTone).

Speaker Wiring

An individual 3-wire cable (IWA-3) must be connected from each remote speaker or remote control to the master unit’s terminal board.

• Maximum speaker run: 300 feet.

• Maximum total of IWA-3 per system: 2000 feet.

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. TO HELP REDUCE THIS INTERFERENCE, ALL REMOTE SPEAKER WIRES AND CABLES MUST BE PLACED AT LEAST 12 INCHES FROM ANY A.C. POWER WIRING.

Maximum Number of Speakers

Refer to Figure 1. The System will accommodate up to 13

speakers and up to 3 door speakers. If more than 9 Remote Stations are connected, use only terminals 1, 2, 6 and 7 for double wiring connections.

Mounting the Terminal Board

1. Refer to Figure 2. Locate the terminal board in the left rear

section of the rough-in frame.

2. Use four No. 6 x

⁄8" screws (supplied) to secure the terminal

board to rough-in frame.

3. Make certain that the lower right screw is secure and snug

against the ground lug which covers mounting hole in terminal board. Do not bend ground lug. Make sure it is positioned between mounting screw and terminal board.

FOR SYSTEMS USING 10-13 SPEAKERS, MAKE DOUBLE CONNECTIONS TO ONLY TERMINALS 1, 2, 6, 7.

FIGURE 2

RED

SILVER

CENTER

BLUE

COPPER

RED

SILVER

CENTER

BLUE

COPPER

GROUND LUG

INSTALLATION

FIGURE 1

IMPORTANT:

DO NOT APPLY POWER TO THE SYSTEM

UNTIL ALL

CONNECTIONS ARE COMPLETE.

Wire Matching Chart

NuTone has adopted the use of a 3-wire color-coded cable. If you are replacing an older model radio-intercom, use this chart to match the copper/center/silver designations of older wiring with the blue/grey/red-stripe color-coded wire.

Connecting the Remote Speaker Wiring

NOTE: All speaker and door wiring must return directly to Master unit. Do not connect wiring from speaker to speaker.

1. Dress all speaker wiring through the oblong wire holes in the

rough-in frame. All wiring connections are made to the Master unit’s terminal board.

2. Refer to Figure 6. When routing speaker wires through

rough-in, run wires through the LEFT-HAND side of the upper and/or lower wiring channels.

3. Refer to Figures 3, 4 & 5. Connect the three-conductor wire

(IWA-3) from each speaker to a set of terminal screws. Connect speaker wiring as follows:

RED STRIPE wire to terminal screw marked RED SILVER. GREY wire to terminal screw marked CENTER. BLUE wire

to terminal screw marked BLUE COPPER.

4. Refer to Figure 5. The system will accommodate up to 13

speakers. If more than 9 speakers are connected, use only terminals 1, 2, 6 and 7 for double wiring connections.

When connecting two remotes to screw terminals 1, 2, 6 and 7.

• Connect both red wires to the RED SILVER terminal screw.

• Connect one remote’s GREY wire to a CENTER terminal screw, and connect the second remote’s center wire to the second CENTER terminal screw.

• Connect one remote’s BLUE wire to a BLUE COPPER terminal screw, and connect the second remote’s BLUE wire to the second BLUE COPPER terminal screw.

Repeat this procedure for each double remote connections. NOTE: Failure to make these double connections properly will cause the unit to squeal.

5. Refer to installation instructions packaged with remote speakers or remote controls for wiring of the units.

6. See “Wire Matching Chart” if you are retrofitting a

system with the previously used Copper/ Center/ Silver wire.

OLD CABLE NEW CABLE

Wire Insulation

Copper Blue

Center Grey

Silver Red Stripe

RED

SILVER

CENTER

BLUE

COPPER

RED

SILVER

CENTER

BLUE

COPPER

RED

SILVER

CENTER

BLUE

COPPER

RED

SILVER

CENTER

BLUE

COPPER

EARTH

DOOR SPKR

RED STRIPE

GREY

BLUE

RED STRIPE

SINGLE REMOTE CONNECTION

DOUBLE REMOTE CONNECTION

GREY

BLUE

TERMINAL BOARD

RED SILVER

CENTER

BLUE COPPER

1234

6789

CN702

CN701

CN703

CN704

INSTALLATION

(Continued)

FIGURE 4

FIGURE 3

FIGURE 5

FOR SYSTEMS USING 10-13 SPEAKERS, MAKE DOUBLE CONNECTIONS TO ONLY TERMINALS 1, 2, 6, 7.

Connecting the Door Speaker Wiring

1. The door speaker connects to the Master terminal board with two conductor (IW-2) 22 gauge twisted pair wire.

2. Refer to Figure 4. Connect the two wires from the door speaker(s) to the two terminal screws marked DOOR SPKR on the Master Te r minal board.

RED

SILVER

CENTER

BLUE COPPER

FIGURE 7 FIGURE 8 FIGURE 9 FIGURE 10

INSTALLATION

(Continued)

Mounting the Master Panel

1. Refer to Figure 6. Use two (2) no. 6 x 3⁄8" screws to attach mounting brackets to rough-in frame Using bottom set

holes, make sure brackets are flush to wall or rough-in and screws are tight.

2. Refer to Figures 7 and 8. For rough-in frames which are recessed into the wall opening, insert two (2) shoulder

screws (provided) into the front two holes in the rough-in frame. For rough-in frames which are mounted flush with the wall, insert two (2) shoulder screws (provided) into the back two holes in the rough-in frame.

FIGURE 6

SUPPORT STRAP

ROUTE SPEAKER WIRES THROUGH LEFT-HAND SIDE OF CHANNEL

AM/FM ANTENNA

HEAT SINK

3. Refer to Figure 9. Attach master panel to rough-in frame by placing keyhole slots in both mounting hinges over screw heads in rough-in frame.

4. Refer to Figure 10. Slide master panel to the right, then forward until panel is flush with the wall.

5. Align master panel with rough-in frame.

6. Refer to Figure 6. Attach support strap to rough-in by attaching onto oblong hole in top of rough-in frame.

INSTALLATION

(Continued)

Connecting Antenna

1. Connect the AM/FM antenna (supplied with the IR-104 rough-in) to the 2-pin connector located in the upper right corner of the main PC board.

In most locations, the antenna supplied with the rough-in provides adequate AM reception. However, in rural or weak signal areas a separate AM antenna may be required. Use the following instructions for selecting and connecting a separate AM antenna.

1. Refer to Figure 11. Move the the auxiliary AM antenna

selector switch to the AM position.

2. Connect 50 feet of 22 GA. insulated wire (not supplied by

NuTone) to the screw terminal marked AUX AM ANTENNA.

3. Run the wire from the Master location to the attic. Fasten the

insulated wire at one end of the attic, stretch the wire to its full length, and fasten at the opposite end. Fasten the insulated wire at several locations between ends to prevent sagging.

Selecting Remote Radio Control Features

CONTROLLING THE RADIO FROM REMOTE STATIONS

The radio may be turned on/off or a stored radio memory channel may be selected at any remote station as follows:

RADIO ON/OFF

Press and hold the END CALL key for 2 seconds. The radio will turn on or off depending on the present state of the radio.

RADIO MEMORY CHANNEL SELECTION

Momentarily press the END CALL key. The radio will sequentially step through the stored radio memory channels.

If desired, these functions may be disabled as follows:

DISABLING REMOTE STATION RADIO ON/OFF

Refer to Figure 12. Slide the switch labeled POWER located

on the master station’s main PC board to the OFF position. This will disable the remote station radio on/off function at

ALL remote stations.

DISABLING REMOTE STATION RADIO MEMORY CHANNEL SELECTION

Refer to Figure 12. Slide the switch labeled TUNING located

on the master station’s main PC board to the OFF position. This will disable the remote station radio memory channel selection function at ALL remote stations.

Installing and Connecting Optional Door Release Push Button

Refer to Figure 13.

1. Open right-hand panel door.

2. Cut 4 retainer webs from pushbutton hole cover.

3. Remove cover.

4. Feed one wire from Door Release Transformer and one

wire of Door Release mechanism through push button hole.

NOTE: The door release requires a separate 301T Transformer.

5. Connect the 2 wires to the pushbutton.

6. Rotate the pushbutton so the screws are on the top and bottom

as illustrated, then snap the button into the mounting hole.

FIGURE 11

AUXILIARY AM ANTENNA TERMINAL SELECTOR SWITCH

ANTENNA GROUND

AUXILIARY AM ANTENNA TERMINAL

AM/FM NOTCH DIPOLE ANTENNA CONNECTOR

FIGURE 12

OFF

TUNING

POWER

FIGURE 13

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