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4. Secure plate to junction box using mounting
screws.
5.
With a small wire connector, connect white wire
from connector plug to white household wire.
6. Connect black wire from connector plug to
black household wire.
7. To interconnect alarms, connect yellow wire
from connector to interconnect wire between
other combination or smoke alarms. Before
starting, see “INTERCONNECTING COMBI-
NATION AND OR SMOKE ALARMS.”
NOTE: For a single-station combination alarm,
cover yellow wire with electrical tape and
tuck into junction box.
8. Attach connector plug to pins on back of com-
bination alarm. Plug will fit only one way and
will snap into place. Gently tug connector to
be sure it is attached securely.
9. Position the combination alarm to mounting
plate and turn clockwise to lock into place.
10. Turn on power at main fuse box or circuit
breaker.
11. Test combination alarm. See “TESTING THE
COMBINATION ALARM.”
12. Activate the battery. Remove
arrow tab and close battery
door. The combination alarm will
beep briefly and the RED light
will flash as door is closed.
Interconnecting AC Only and AC/DC
(With Battery Back-up) Alarms
• Use #18 AWG minimum solid or stranded wire.
When interconnecting, maximum wire length
between any two is 1,500 feet for #18 AWG
or 4,000 feet for #14 AWG (20 OHMS loop
resistance).
• This combination alarm may be interconnected
with as many as 11 other Firex model FADCQ,
FADC, TPCI, AD, ADC, PAD, G, GC, PG40, or
FX1218 smoke alarms, and as many as 6 Firex
model ADH heat alarms or COQ-8 CO alarms
for a total of not more than 18 interconnected
devices. DO NOT connect to any other type or
model combination smoke, or CO alarm.
WARNING
While AC and AC/DC smoke alarms can be inter-
connected, ONLY when AC power is ACTIVE will
ALL units ALARM when one unit senses smoke.
WHEN AC power is DISCONNECTED, INTERRUPT-
ED OR NOT PRESENT FOR ANY REASON, ONLY
AC/DC UNITS WILL CONTINUE TO SEND AND
RECEIVE SIGNALS AND SOUND AN ALARM IN
RESPONSE TO THE PRESENCE OF SMOKE.
WHEN power is DISCONNECTED, INTERRUPTED
OR NOT PRESENT FOR ANY REASON, AC pow-
ered smoke alarms WILL NOT OPERATE. The
Model G is an AC-only smoke alarm!
• Connect combination and smoke alarms to a
single dedicated AC branch circuit. If local
codes do not permit such a wiring configuration
or connection, be sure the neutral wire is com-
mon to both circuits or phases.
11
FOR INTERCONNECT: USE #18 AWG MINIMUM WIRE
YELLOW
BLACK
WHITE
YELLOW
BLACK
WHITE
BLACK
WHITE
TO NEUTRAL
TO 120V AC