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•
For best results to minimize nuisance alarms, interconnected alarms should be on a dedicated line. If not
on a dedicated line, it is suggested that the smoke alarms share a lighting load circuit that does not have a
dimmer associated with it. If receptacles must be placed on the same line it is suggested that they be placed
ahead of the smoke alarms (see Figure 9-D). This will prevent large voltage drops from occurring between
the first and last alarm in the circuit.
•
Smoke alarms are not to be used with detector guards unless the combination (alarm and detector guard)
has been evaluated and found suitable for that purpose.
WARNING: THE ALARM CANNOT bE OpERATED fROM pOWER DERIVED fROM A SqUARE
WAVE, MODIfIED SqUARE WAVE OR MODIfIED SINE WAVE, INVERTER. THESE TypES Of
INVERTERS ARE SOMETIMES USED TO SUppLy pOWER TO THE STRUCTURE IN Off GRID IN-
STALLATIONS, SUCH AS SOLAR OR WIND DERIVED pOWER SOURCES. THESE pOWER SOURCES
pRODUCE HIGH pEAK VOLTAGES THAT WILL DAMAGE THE ALARM.
Figure 9-C, Interconnect Wiring Diagram
Wires on alarm harness: Connected to:
Black: Hot side of AC line
White: Neutral side of AC line
Red: Interconnect lines (red wires) of other
units in the multiple station set-up
Additional
Alarm
RED
BLACK
WHITE
Additional
Alarm
RED
BLACK
WHITE
FUSE OR CIRCUIT BREAKER
RED
BLACK
WHITE
Kidde Relay Module
SM120X, CO120X
or both
Optional
Accessory
First
Alarm
Figure 9 -D
Service
Panel
Receptacles Interconnected alarms
Wiring practice that has had good results
in preventing nuisance alarms