NuTone IA-28 - Manuel (Page 3)

3
INTERCOM SYSTEM FOR HOME OR OFFICE
NUTONE
ELECTRONIC CHIME
SEE CHIME
INSTALLATION
INSTRUCTIONS
18/2
(NUTONE
S-143)
18/2
(NUTONE
S-143)
TO PUSH
BUTTON(S) TO CHIME
TRANSFORMER
BLK / WHT
RED / W
RED
BLK
ORN
ORN/ WHT
DECREASE DECREASE
INCREASE INCREASE
INTERCOM VOLUME
CONTROL
OUTPUT
HI
RED
OUTPUT
LO
RED WHT
INPUT
ORN / WHT DOOR
BLK
DOOR
BLK / WHT
CHIME
AC
RADIO VOLUME
CONTROL
IMA-516
CENTRAL AMPLIFIER
INPUT
ORN
DOOR SPEAKER MAY
BE CONNECTED TO
BLACK AND BLACK
WHITE TERMINALS
IN AMPLIFIER OR
REMOTE SPEAKER
DOOR
SPEAKER
DOOR SPEAKER
MODELS WITH
CHIME PUSHBUTTON.
RUN 18 / 1 (S-143)
TO CHIME LOCATION
FIELD
GROUNDING
WIRE
14 GAUGE
NUTONE IW-2
(MAX 400 FT)
MODEL 301T
TRANSFORMER
18 / 2 (NUTONE S-143 150 FT MAX.)
NUTONE IW-2 (MAX. 200 FT)
NUTONE IW-2
LOW-LEVEL
INPUT WIRES
BLUE & BLACK
AC
CHIME
ISB-53 ISB-53 ISB-53
120vAC, 60Hz HOUSE POWER
OBSERVE LOCAL CODE
LOW-LEVEL RADIO/MUSIC OUTPUT
(1) NuTone Radio-Intercom 2000, 3000,
3300, 4000 or 5000 model series. Low-
level music output provided - black and
blue wires connect with IW-2 (max.
10 ft.) to black and blue input wires on
IMA-516 Amplifier.
(2) Speaker connected to an existing AM/FM
radio music source. Use IW-2 (max. 10
ft.) to connect the IMA-516 low-level
input leads to the speaker terminals.
SPECIFICATIONS FOR LOW-LEVEL OUTPUT CONNECTION.
(1) Minimum 5mv for 50mv output (least useable output).
(2) 50mv for 4 watts (full output).
(3) Maximum input voltage: 1 volt.
(4) Input impedence: 100K ohms.
PROCEDURE FOR THIS
CONNECTION:
(1) Turn Radio Volume Control on
IMA-516 Amplifier to minimum
(extreme counterclockwise
position)
(2) Make wire connections.
(3) Supply power and adjust the
radio/music volume at the source.
(4) Finally, increase IMA-516 Radio
Volume Control to desired level.
NOTE: If desired NuTone Model: ISB-53W (outdoor speaker) may be used.
The ISB-53W has the same features as the ISB-53 except that it is weather-resistant.
SPEAKER/WIRE
SPECIFICATIONS
MAXIMUM OF 3 SPEAKERS MAY BE CONNECTED ON
SAME WIRE RUN. MAXIMUM CABLE LENGTHS.
1 SPEAKER 500 FEET
2 SPEAKERS 250 FEET
3 SPEAKERS 150 FEET
DO NOT EXCEED 4000 FEET OF IW-6 PER SYSTEM
MAXIMUM OF 10 REMOTE SPEAKER STATIONS AND 2 DOOR SPEAKERS