Niles MSU250 Installation Manual page 8

INSTALLATION CONSIDERATIONS
WIRING
From every IR Sensor location you must "home-run" a CAT-5 cable back to the MSU250.
Home run means that an individual cable is connected between each IR Sensor and the MSU250
(Figure 4).
Figure 4:
Home run the sensor cable
from the sensor to the MSU250
NOTE: IMPORTANT – AVOIDING INTERFERENCE AVOID LOCATING ANY OF THE CABLES, SENSORS,
KEYPADS OR THE MAIN SYSTEM UNIT NEAR ANY POTENTIAL SOURCES OF ELECTRO-MAGNETIC
INTERFERENCE (EMI), SUCH AS LIGHT DIMMERS, SPEED CONTROLS FOR CEILING FANS,
ELECTRICAL BALLASTS, TELEVISION SETS, LARGE MOTORS, HEATERS OR AIR CONDITIONERS
6
Remotely Located
IR Sensors
Sensors In
(CONTINUED)
TECH TIP
W
IRE SIZE IS EXPRESSED
BY ITS
W
IRE
–
THE LOWER THE
NUMBER
AWG,
20 AWG
LARGER THAN
AWG (A
MERICAN
G )
AUGE NUMBER
,
THE LARGER THE
,
FOR EXAMPLE
IS PHYSICALLY
22 AWG.
(CONTINUED ON NEXT PAGE)