Installation Instructions

A maximum of 24 Kidde Safety devices may be interconnect- ed in a multiple station arrangement. The interconnect sys- tem should not exceed the NFPA interconnect limit of 12 smoke alarms and/or 18 alarms total (smoke, CO, Smoke/ CO Combination, heat, etc.). This Smoke/CO combination alarm must be counted as a smoke alarm when determining the number of units on an interconnect line. With 18 alarms interconnected, it is still possible to interconnect up to a total of 6 remote signaling devices and /or relay modules (see page 16 for details on interconnecting Kidde devices).

The maximum wire run distance between the first and last unit in an interconnected system is 1000 feet.

Figure 3 illustrates interconnection wiring. Improper connec- tion will result in damage to the alarm, failure to operate, or a shock hazard.

Make certain alarms are wired to a continuous (non-switched) power line. NOTE: Use standard UL Listed household wire (as required by local codes) available at all electrical supply stores and most hardware stores.

FUSE OR CIRCUIT BREAKER

BLACK

RED

 

BLACK

RED

WHITE

 

 

WHITE

 

 

CONNECTOR

Kidde

 

CONNECTOR

 

 

 

 

 

 

Relay Module

 

 

 

 

SM120X

 

 

First

Additional

Optional

Additional

 

Alarm

Alarm

Alarm

 

 

 

Accessory

 

 

FIGURE 3 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

12