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What Cable is Needed
VERY IMPORTANT - Use only NuTone intercom cable to wire NuTone intercom system. NuTone intercom cable is
designed and constructed to electrical specifications necessary for satisfactory performance.
Use of “generic” cable can result in humming, interference and feedback in the installed system. After the house is
finished, it will be time consuming and expensive to correct problems caused by use of the wrong cable. NuTone
will not warranty systems where NuTone intercom cable is not used.
• On all models except the IMA-516 and IM-5000, you should plan a separate “home run” cable from the master
housing to each individual speaker or volume control location. Do not loop cables from one speaker or volume
control to another. Electronic feedback or poor system performance will result. Models IMA-516 and IM-5000
can have speakers “looped”. See IMA-516 and IM-5000 instruction sheets for details.
• Do not splice cables. Always install an uninterrupted cable from the master to the intercom speakers or volume
controls and from the volume controls to the music speakers.
• Plan to keep cables 18 inches from fluorescent light fixtures, light or fan dimmer controls and any other wiring
(electrical power, security system, etc.) to minimize risk of system interference.
• Plan cable routes away from metal (heating and air conditioning ducts, construction plates, etc.) or any other
objects that may have sharp edges that could cause damage to the cables. If cables must be routed through metal,
use rubber grommets in the holes to protect the cables.
• Cables installed outside the house are to be routed through PVC conduit to protect them from the elements.
The cables are not constructed to be UV weatherproof.
Wiring Your System
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