NuTone IA-28, IA-29 operating instructions Operational Checkout, Model ISB-53 Speaker

OPERATIONAL CHECKOUT

INTERCOM SYSTEM FOR HOME OR OFFICE VOLUME SETTING – Each remote speaker's volume control should be set between 3/4 and full volume. The intercom Volume Control in the Amplifier should be set about 1/3 of its rotation. In general, keep the remote speaker's volume control high and the amplifier intercom volume control relatively low.

MODEL ISB-53 SPEAKER –

INTERCOM – Press the INTERCOM button to speak with inside or patio speakers. To speak with the door speaker, lock in the DOOR button and press INTERCOM button. To listen, release the intercom button.

MONITORING – To monitor a specific speaker location, lock in the TALK LOCK button. The speaker will now transmit sounds to other speakers. NOTE: Be certain the speaker set for monitoring has its volume control set to maximum level.

DOOR ANSWERING INTERCOM FOR APARTMENTS

To talk, place the intercom switch to TALK. To listen, place the button to LISTEN. To activate the door release, press the DOOR button to OPEN.

MUSIC-ONLY SPEAKER SYSTEM

The maximum volume for the radio/music is set at the source. The amplifier has a Radio Volume control which can decrease the volume which is set at the music source.

INSTALLER'S TROUBLESHOOTING GUIDE

1. System does	1a.Improper wire.		1a.NuTone Model IW-6 cable
not work.			must be used with this
			system. No other wire can
			be used.
	1b.Power supply.		1b.Check 120vAC, 60Hz
			house power supply to
			transformer
2. System worked	2.	Improper	2. NuTone Model 301T
temporarily.		transformer.	transformer must be used.
3. No intercom.	3.	Intercom gain	3. Check setting of intercom
		control.	gain control.
4. No radio/music	4a.Radio volume		4a.Be certain volume control
(optional).		control.	on radio/music source is
			set sufficiently high. Next
			check radio volume control
			on amplifier.
	4b.Short in wiring.		4a.Be certain volume control
			on radio/music source is
			set sufficiently high. Next
			check radio volume control
			on amplifier.

TROUBLESHOOTING HINT: If system does not work, remove remote speaker and accessory wiring from amplifier, then connect a pair of test speakers. Connect one test speaker to the orange pair terminals and connect the other test speaker to the red pair terminals. If sound is heard, the amplifier is operational. Begin connecting one remote speaker at a time and testing for proper operation. If remote speaker does not work, check for wiring error (improper connection or short).

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