Edwards Signaling 517FH - Manual (Page 5)

WIRING ONE DETECTOR
1. Run a minimum of 16 gauge, 2-conductor cable, plus ground
(3 wires) to the alarm junction box from a power supply. Use
UL Listed Class 1 wire.
2. Make wire connections to the supplied plug-in connector as
follows: black to black, white to white, and connect the ground
wire to the metal outlet box.
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
UL 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
the connection. Connect ground wire between metal outlet
boxes.
NOTES ON TANDEM INTERCONNECTING MODELS
• DO NOT connect Edwards Smoke Alarms or Heat Detectors to
other manufacturers’ smoke alarms.
• No more than (12) Edwards models 517TB, 517THB, 517T or
518TH may be connected in tandem with (6) models 517FH.
• No more than (6) Edwards models 517TCS or 517TCSB may
be connected in tandem. If a 517FH is interconnected, a maxi-
mum of (5) 517TCS or 517TCSB and (3) 517FH units may be
interconnected.
• All units connected in tandem MUST get their power from the
same circuit, that is, all smoke alarms in tandem must be con-
trolled 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.
BATTERY INSTALLATION
1. Remove alarm from mounting plate by turning counter-clock-
wise.
2. Remove AC power connector and unsnap power leads from
the top of the old battery. Snap new battery onto snaps and
reinsert battery through hole in the back of the alarm. WARN-
ING: Units with battery back-up will not provide power or trans-
mit an alarm to AC only units in the event of an AC power
failure. All battery back-up units in tandem with good batter-
ies will operate normally during an AC power failure.
NOTE/RED-YELLOW WIRE: The red-yellow wire from the alarm
is for tandem connection only. DO NOT USE, AND DO NOT
REMOVE INSULATION CAP UNLESS CONNECTING ANOTHER
ALARM.
WIRING TWO OR MORE DETECTORS
Tandem Installation
CAUTION: All alarms in a tandem installation must be con-
trolled 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 (12) smoke alarms (517TB or
517T) may be connected together. A total or (18) heat and smoke
detectors may be connected together. Do not exceed 125 feet
between each alarm. Do not exceed 1125 feet between first and
last alarm.
NOTE: A maximum of five (5) alarms of either model 517TCB
or 517TC with the relay options or 517TCS or 517TCSB may be
tandem interconnected with up to (3) heat detectors.
Wire used for interconnecting shall be in accordance with the
latest editions of article 760 of the National Electrical Code (NFPA
70) and must not exceed a resistance of 10 ohms.