NuTone IMA-3033 Series Master Station Installation, Wiring Specifications, Speaker Wiring

INSTALLATION

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 3⁄8" 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.

1	2
RED
SILVER

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

SILVER

CENTER

BLUE

COPPER

FIGURE 1

GROUND

LUG

FIGURE 2

IMPORTANT:

DO NOT APPLY POWER TO THE SYSTEM UNTIL ALL CONNECTIONS ARE COMPLETE.

2