System Sensor LFD Models - Manual (Page 3)

Break wire as shown for
supervision of connection.
DO NOT allow stripped wire
leads to extend beyond
switch housing. Do NOT
loop wires.
D770-30-00 3 I56-1620-002R
Figure 3. Wiring LFD to bell:
BELL BELL
POWER SOURCE
A B
C
OM
POWER
TERMINALS
AUX RELAY
TERMINALS
Figure 7. Wiring the LFD to a panel and other device:
Leave the Relay Wires installed under the Power Terminals and connect
the panel initiating loop wires as shown below. The LFD requires power
to operate, therefore connect the FACP initiating loop wires to the Power
Terminals and Relay Wires as shown. If power should be interrupted
before the panel, the batteries in the panel will maintain power to the
LFD.
EOL
OR NEXT
DEVICE
FACP
POWER SOURCE
BELL BELL
A B COM
POWER
TERMINALS
AUX RELAY
TERMINALS
RELAY
WIRES
Figure 6. Wiring the LFD to a panel:
Leave the Relay wires installed under the Power Terminals and connect
the panel initiating loop wires as shown below.
OR NEXT
DEVICE
POWER
TERMINALS
AUX RELAY
TERMINALS
A B
C
OM
EOL
FACP
RELAY
WIRES
TO NEXT MODULE
OR EOL
INTELLIGENT
MODULE FACP
A B COM
POWER
TERMINALS
AUX RELAY
TERMINALS
RELAY
WIRES
Figure 8. (2 Wire Addressable) Wiring the LFD to an addressable
panel using the SLC loop wires for power:
Remove the Relay Wires from under the Power Terminals. Connect these
wires to the Addressable Module.
NOTE: Consult FACP Manufacturers’ Compatibility Guide prior to
installation.
Figure 4. (4 Wire Addressable) Wiring the LFD to an addressable
panel using an auxiliary power supply for power:
Remove the Relay Wires from under the Power Terminals. Connect these
wires to the Addressable Module.
Figure 5. Wiring the LFD using 4 wires. (Aux. Power from Panel):
Remove the Relay Wires from the Power Terminals. Cut off the spade lugs
from the ends of the Relay Wires. Put wire nuts over ends of Relay Wires
as shown. Use Aux. Relay Terminals to make connection to panel and next
device as shown.
AUX. POWER
OUTPUT
INITIATING
LOOP
A B COM
POWER
TERMINALS
AUX RELAY
TERMINALS
RELAY
WIRES
FACP
EOL POWER
SUPERVISION
RELAY (SHOWN
ENERGIZED)
A77-716 12/24V
EOL
NOTE: To comply with NFPA code, never put more than two wires in
a wire nut.
Relay wires and power terminal wiring must be contained within either a
common enclosure or enclosures within 20 feet of each other with wiring
inside conduit.
CAUTION
AUX.
POWER
OUTPUT
MODULE
SLC
LOOP
A B COM
POWER
TERMINALS
AUX RELAY
TERMINALS
RELAY
WIRES
FACP
MODULE
A B COM
POWER
TERMINALS
AUX RELAY
TERMINALS
RELAY
WIRES
NOTE: PLACE MODULE EOL
RESISTOR ACROSS RELAY
WIRES INSIDE AFD COVER. NOTE: PLACE MODULE EOL
RESISTOR ACROSS RELAY
WIRES INSIDE AFD COVER.
AFD
ENCLOSURE AFD
ENCLOSURE
EOL POWER
SUPERVISION
RELAY (SHOWN
ENERGIZED)
A77-716 12/24V