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WIRING TWO OR MORE ALARMS
(7109CS/CSX & 7139CS/CSX only)
Tandem Installation
CAUTION: All 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 alarm.
LIMITATIONS: A maximum of six (6) 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 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.
Figure 9
1. Run a minimum of 16 gauge, 3-conductor cable, plus ground
(4 wires) to the first alarm junction box from a power supply
and between all alarms that are to be connected together.
Use U.L. listed Class 1 wire.
2. Make wire connections to the supplied plug-in connector as
follows: black to black, white to white, 3rd conductor to the
red-yellow wire. The red-yellow wire should be stripped to
make this connection. Connect ground wire between metal
outlet boxes.
NOTES ON 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.
IMPORTANT WARNING: Failure to observe any of the
conditions set forth may cause system malfunction and damage
to the alarm.
MOUNTING: PLATE & 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.
NOTE: Mounting plate is marked "THIS SIDE OUT" and
slotted for proper positioning.
Figure 10
2. Plug the wire connector into the alarm base.
3. Place the alarm up to the 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 the alarm
parallel to the mounting plate so upper and lower tabs on
the plate seat into the alarm.
Figure 11
MOUNTING: PLATE & ALARM
(7109LS/7139LS only)
LINE CORD MODEL
Figure 12
Place the alarm up to the 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 the alarm parallel to the
mounting plate so upper and lower tabs on the plate seat into
the alarm.
Figure 13
IMPORTANT WARNING:
Failure to observe any of the conditions set forth may cause
system malfunction and damage to the alarm.
The 7109LS/7139LS is supplied
with a 9 foot line cord for installation
to a normal outlet box.
For this type of installation:
1. Connect line cord to unit as
demonstrated in Figure 12.
2. Determine proper location for
alarm above a receptacle that is
NOT CONTROLLED BY AN
"ON-OFF" SWITCH.
3. If screw anchors are used, drill a
3/16" hole and mount bracket to
wall.
4. Mount the alarm to the bracket as
illustrated in Figure 13.
5. Use the enclosed cord retainer
clamp as illustrated in Figure 12
to insure the unit is not
accidentally disconnected.
Pg. 7-5
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