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Figure 9
WIRING TWO OR MORE SMOKE ALARMS
Tandem Installation
NOTICE: All smoke alarms in a tandem installation must be
controlled by the same fuse or circuit breaker. Otherwise tandem
units will not operate.
LIMITATIONS: A maximum of 12 smoke alarms ("7100/ 7103" or
"7200/7203") may be connected together. Do not exceed 125 feet
between each smoke alarm. Do not exceed 1125 feet between first
and last smoke alarm.
NOTICE: A maximum of six (6) smoke alarms of either model
7100/7103 or 7200/7203 with the relay options (F) may be tandem
interconnected.
Wire used for interconnecting shall be in accordance with article
760 of the latest edition of the national electrical code NFPA 70 and
must not exceed a resistance of 10 ohms.
Figure 10
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 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 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 the connection.
Connect ground wire between metal outlet boxes.
Figure 11
NOTES ON TANDEM INTERCONNECTING MODELS
Only Gentex models may be connected. DO NOT connect Gentex
Smoke Alarms to other manufacturers' smoke alarms.
No more than 12 Gentex models 7100T, H/7103T, H or 7200T,
H/7203T, H may be connected in tandem.
No more than 6 Gentex models 7100F, TF, HF/7103F, TF, HF or
7200F, TF, HF/7203F, TF, HF 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.
CAUTION: Failure to observe any of the conditions set forth may
cause system malfunction and damage to the smoke alarm.
MOUNTING: PLATE & SMOKE ALARM
1. Lace the connector through the provided mounting plate and
secure the plate to the junction box.
2. Plug the wire connector into the smoke alarm base.
Figure 12
3. Place the smoke alarm up to the mounting plate, rotating it
clockwise until device firmly snap locks into place. Keep the unit
parallel to the mounting plate so upper and lower tabs on the plate
seat correctly into the smoke alarm.
Figure 13
CHECKOUT & TROUBLESHOOTING
1. Turn test knob to the NORMAL position and supply house power
to the smoke alarm. The red indicator light should flash
approximately 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 the house current.
b. Check the connector plug and wire connections. NOTICE: Be
sure you turn off power before checking wire connections.
c. If the power supply and wiring check out, but the red light does
not flash, return the smoke alarm to the manufacturer. See TO
RETURN A SMOKE ALARM.
d. When powering up smoke alarms in a tandem installation and all
the devices sound immediately, inspect all smoke alarms for those
with an illuminated indicator light. These will be the trouble units.
3. Testing with the Test Knob:
a. Rotate the test knob counter-clockwise to the TEST 1 position
and wait up to 20 seconds for the smoke alarm to sound. If the unit
does not sound after 20 seconds, return the smoke alarm for
service.
b. After successfully testing smoke alarm, return test knob to
NORMAL (non-test) position and wait 20 seconds for the alarm to
stop sounding.
Figure 14
c. To test smoke alarm for high sensitivity, turn test knob clockwise
to TEST 2 position. Smoke alarm should remain silent. Make sure
to return test knob back to its normal position. If your device sounds
during this test it means the smoke alarm's sensitivity has become
too high and may cause false alarms. This could mean your smoke
alarm is dirty and should be cleaned as described in the
maintenance procedure below. If the smoke alarm continues to
alarm for TEST 2 position following cleaning return it to Gentex for
service.
d. To check for proper smoke entry into your smoke alarm's sensing
chamber, Gentex recommends using the Home Safeguard Smoke
Alarm spray or CHEKKIT® SMOKE Detector Tester from SDI. This
test should be performed once a year and should be sprayed from a
distance no closer than 12 inches from the smoke alarm.
550-0071
Pg. 7-5
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