Figure 3. wiring afd to bell – System Sensor AFDT and AFDTH User Manual

Page 3

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D770-34-00

3

I56-1621-004R

Figure 3. Wiring AFD to bell:

BELL

BELL

POWER SOURCE

A B CO

M

POWER
TERMINALS

AUX RELAY
TERMINALS

Figure 4. (4 Wire Addressable) Wiring the AFD 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.

Break wire as shown for
supervision of connection.
DO NOT allow stripped wire
leads to extend beyond
switch housing. Do NOT
loop wires.

Figure 7. Wiring the AFD 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 AFD
requires power to operate, therefore connect the FACP initiating
loop wires to the Power Terminals and Relay Wires as shown.

EOL

OR NEXT
DEVICE

FACP

POWER SOURCE

BELL

BELL

A B COM

POWER
TERMINALS

AUX RELAY
TERMINALS

RELAY
WIRES

Figure 6. Wiring the AFD 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 AFD 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 Manufacturer’s Compatibility Guide prior

to installation.

Figure 5. Wiring the AFD 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..

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

INITIATING
LOOP

A B COM

POWER
TERMINALS

AUX RELAY
TERMINALS

RELAY
WIRES

FACP

EOL POWER
SUPERVISION
RELAY (SHOWN
ENERGIZED)
A77-716 12/24V

EOL

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

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