Special Requirements For Interconnected Smoke Alarms
•Failure to meet any of the above requirements could damage the units and cause them to malfunction, removing your protection.
•AC and AC/DC Smoke Alarms can be interconnected. Under AC power, all units will alarm when one senses smoke. When power is interrupted, only the AC/DC units in the series will continue to send and receive signals. AC powered Smoke Alarms will not operate.
Interconnected units can provide earlier warning of fire than stand-alone units, especially if a fire starts in a remote area of the dwelling. If any unit in the series senses smoke, all units will alarm. To determine which Smoke Alarm initiated an alarm, see table:
On Initiating Alarms | Red LED(s) flashes(flash) rapidly |
On All Other Alarms | Red LED is Off |
| |
Interconnect units within a single family residence only. Otherwise all households will experience unwanted alarms when you test any unit in the series. Interconnected units will only work if they are wired to compatible units and
all requirements are met. This unit is designed to be compatible with:
First Alert® Smoke Alarm Models SA4120, SA4121B, SA4919B, SA100B and BRK Electronics® Smoke Alarm Models 100S, 2002RAC, 4120, 4120B, 4120SB, 4919, 5919, 5919TH; BRK Electronics® Heat Alarm Models HD6135F, HD6135FB; Smoke/CO Alarm Model SC6120B; Relay Module RM3.
Interconnected units must meet ALL of the following requirements:
•A maximum of 18 compatible units may be interconnected (Maximum of 12 Smoke Alarms).
•The same fuse or circuit breaker must power all interconnected units.
•The total length of wire interconnecting the units should be less than 1000 feet (300 meters). The intercon- nect wire should be #18 gauge or larger, rated at least 300V. If an interconnect wire is not already part of your household wiring, you will need to install one. This type of wire is commonly available at Hardware and Electrical Supply stores.
•All wiring must conform to all local electrical codes and Article 760 of NFPA 70 (NEC). Refer to NFPA 72, NFPA 101, and/or your local building code for further connection requirements.
A. Unswitched 120VAC B. To additional units; Maximum = 18 total
| | 60 Hz source | | (Maximum 12 Smoke Alarms) |
| | | | | | |
| 1. | Smoke Alarm | 4. | Wire Nut | 7. | Interconnect Wire |
| 2. | Ceiling or Wall | 5. | Junction Box | | (Orange) |
| 8. | Hot Wire (Blk) |
| 3. Power Connector | 6. Neutral Wire (Wht) |
| | |
| | | | | | |
Models SA4121B and 4120SB Only: During installation, if you accidentally press the Silence button, the alarm will “chirp” once a minute for up to 15 minutes and the Test feature will be temporarily disabled. This is normal. The “chirping” will stop once the alarm returns to normal operation.
LOCKING FEATURES
The locking features are designed to prevent unauthorized removal of the battery or Alarm. It is not necessary to activate the locks in single-family households where unautho-
rized battery or Alarm removal is not a concern.
These Smoke Alarms have two separate locking features: one to lock the battery compartment, and the other to lock the Smoke Alarm to the mounting bracket. You can choose to use either feature independently, or use them both.
Tools you will need: • Needle-nose pliers or utility knife • Standard/Flathead screwdriver.
Both locking features use locking pins, which are molded into the mounting bracket. Using needle nose pliers or a utility knife, remove one or both pins from the mounting bracket, depending on how many locking fea- tures you want to use.
To permanently remove either lock, insert a flathead screwdriver between the locking pin and the lock, and pry the pin out of the lock.
TO LOCK THE BATTERY COMPARTMENT
(Models SA4121B, 4120B, and 4120SB Only)
Do not lock the battery compartment until you have installed the battery and tested the battery back- up.
1. Push and hold test button until the alarm sounds: 3 beeps, pause, 3 beeps, pause.
If the unit does not alarm during testing, DO NOT lock the battery compartment! Install a new battery and test again. If the Smoke Alarm still does not alarm, replace it immediately.
2.Using needle-nose pliers or a utility knife, detach one locking pin from the mount- ing bracket.
3. Push the locking pin through the black dot on the label on the back of the Smoke Alarm.
TO UNLOCK THE BATTERY COMPARTMENT
(Models SA4121B, 4120B, and 4120SB Only)
Once the Smoke Alarm is installed, you must disconnect it from the AC power before unlocking the battery compartment.
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Smoke Alarm is installed before removing it from the mounting bracket. Failure to turn off the power first may result in serious electrical shock, injury or death.
Always discharge the branch circuit before servicing an AC or AC/DC Smoke Alarm. First, turn off the AC power at the circuit breaker or fuse box. Next, remove the battery from Smoke Alarms with battery back- up. Finally, press and hold the test button for 5-10 seconds to discharge the branch circuit.
1.Remove the Smoke Alarm from the mounting bracket. If the unit is locked to the bracket, see the section “To Unlock the Mounting Bracket.”
2.Disconnect the power connector by gently prying it away from the back of the Smoke Alarm.
3. Insert a flathead screwdriver under the head of the locking pin, and gently pry it out of the battery compartment lock. (If you plan to relock the battery compart- ment, save the locking pin.)
4. To relock the battery compartment, close the battery door and reinsert locking pin in lock.
5. Reconnect the power connector to the back of the Smoke Alarm, reattach the Smoke Alarm to the mounting bracket, and restore the power.
When replacing the battery, always test the Smoke Alarm before relocking the battery compartment.
