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WIRING TWO OR MORE SMOKE ALARMS (7109CS/CSX &
7139CS/CSX ONLY) Tandem Installation
NOTICE: ALL SMOKE ALARMS IN TANDEM INSTALLATION MUST BE
CONTROLLED BY THE SAME FUSE OR CIRCUIT BREAKER. OTHERWISE
TANDEM UNITS WILL NOT OPERATE. TANDEM WILL OPERATE IN THE EVENT
OF AC POWER FAILURE IF BATTERY IS CONNECTED TO THE SMOKE ALARM.
LIMITATIONS: A maximum of six (6) smoke alarms of model (7109CS/CSX &
7139CS/CSX or models with the relay option (F, HF, TF) may be tandem
interconnected. Do not exceed 1125 feet between first and last smoke alarm.
Wire used for interconnecting shall be in accordance with the latest edition of
Article 760 of the National Electrical Code (NEC) and NFPA 70, and must not exceed
a resistance of 10 ohms.
QUICK DISCONNECT
TYPE PLUG
ELECTRICAL
VAC
BOX
SMOKE
ALARM
ELECTRICAL
BOX
SMOKE
ALARM
TO ADDITIONAL
SMOKE ALARMS
TANDEM WIRE
RED / YEL
(MAX 12 ALARMS
NEUTRAL / WHITE
PER SYSTEM)
HOT / BLACK
1. Run a minimum of 16 gauge, 3-conductor cable, plus ground (4 wires) to the first
junction box from a power supply and between all smoke alarms that are to be
connected together. Use ANSI/UL listed Class 1 wire. Power limited cable for
multiple tandem connections are available at many commercial electrical retail
stores.
2. Make wire connections to supplied plug-in connector as follows: black to black,
white to white, 3rd conductor to red-yellow wire. The red-yellow wire should be
stripped to make this connection. Connect ground wire between metal outlet
boxes.
NOTICE: TANDEM INTERCONNECTING MODELS
DO NOT connect Gentex smoke alarms to other manufacturers' smoke alarms.
No more than 12 Gentex models 9120/9123, 9120T/9123T and 9120H/9123H may
be connected in tandem.
No more than 6 Gentex models 7109CS/CSX & 7139CS/CSX, 9120F/9123F,
9120HF/9123HF and 9120F/9123TF may be connected in tandem.
All units connected in tandem MUST get their power from the same circuit, that is,
all smoke alarms in tandem must be controlled by the same fuse or circuit
breaker.
After installation to verify proper working conditions all horns must sound in this
system.
NOTICE: IF ALL INTERCONNECTED ALARMS DO NOT EMIT ALARM SIGNAL
DURING COMMISSIONING TEST, REFER TO "WIRING TWO OR MORE SMOKE
ALARMS" SECTION TO INSURE ALARM WIRING IS IN ACCORDANCE WITH
TANDEM WIRING DIAGRAM.
CAUTION: Failure to observe any of the conditions set forth may cause system
malfunction and damage to the smoke alarm.
BATTERY INSTALLATION
1. Remove smoke alarm from mounting plate by rotating counter-clockwise.
2. Remove AC power connector and unsnap power leads from top of the old battery.
Snap new battery onto snaps and reinsert battery through hole in back of smoke
alarm.
3. Use only Duracell MN 1604 battery with the 7109/7139 Series smoke alarms.
Available at many retail stores.
CAUTION: Units with battery back-up will not provide power or transmit an alarm to
AC only units in the event of an AC power failure. All battery back-up units in tandem,
with good batteries, will operate normally during an AC power failure.
NOTICE: VISUAL SIGNAL WILL NOT OPERATE DURING AC POWER FAILURE.
LIMITATIONS
Maximum of 12 smoke
alarms may be connected
together. Do not exceed
125 feet between each
smoke alarm.
Do not
exceed 1125 feet between
the first and last smoke
alarm.
MOUNTING:
PLATE & SMOKE ALARM (7109CS/CSX &
7139CS/CSX ONLY)
1. Lace the connector through the provided mounting plate and secure the plate to
the junction box so that the smoke alarm snap-in tabs are in the vertical position if
wall mounted.
NOTICE: MOUNTING PLATE IS MARKED "THIS SIDE OUT" AND SLOTTED FOR
PROPER POSITIONING.
2. Plug the wire connector into the smoke alarm base.
3. Place smoke alarm up to mounting plate, rotating it to about 10:00 o'clock then
rotate it clockwise to 12:00. It should "snap-lock" firmly into place. Keep smoke
alarm parallel to mounting plate so upper and lower tabs on plate seat into device.
MOUNTING: PLATE & SMOKE ALARM (7109LS/7139LS ONLY)
LINE CORD MODEL
The 7109LS/7139LS is supplied with a 9 foot line cord for installation to a normal
outlet. For this type of installation:
1. Care should be taken to lace cord through slots in base as shown in above
diagram to insure cord does not interfere with engagement of the mounting
bracket.
2. Determine proper location for smoke alarm above a receptacle that is NOT
CONTROLLED BY AN "ON-OFF" SWITCH.
3. If screw anchors are used, drill two 3/16" holes, insert the screw anchors, and
mount the plate to wall using screws.
4. Mount the smoke alarm to the bracket as illustrated.
5. Use the enclosed cord retainer clamp as illustrated, to insure the unit is not
accidentally disconnected.
Place smoke alarm up to mounting plate, rotating it to about 10:00 o'clock then
rotate it clockwise to 12:00. It should "snap-lock" firmly into place. Keep smoke alarm
parallel to the mounting plate so upper and lower tabs on the plate seat into the
smoke alarm.
CAUTION: Failure to observe any conditions set forth may cause system malfunction
and damage to smoke alarm.
CHECKOUT & TROUBLESHOOTING
1. Turn test knob to the NORMAL position and supply house power to the smoke
alarm. The red indicator should flash every 15-30 seconds, showing that the
smoke alarm is operating properly.
2. If red light is not flashing or the green LED is not on:
a. Check that the battery is installed.
b. Check to see if the plug is in the outlet.
c. If the power and wiring check out, but the red light does not flash or the green
LED is still off, return the device to the manufacturer. See TO RETURN A
SMOKE ALARM.
550-0094
Page 7-5
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