background image

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

firealarmresources.com

Summary of Contents for Accuflow LFD20

Page 1: ...tion manual covers the following waterflow detec tors for sprinkler fire alarm applications Low Flow Models Nominal Pipe O D Nominal Wall Thickness LFD20 2 60 3mm 3 9mm to 4 5mm LFD25 73MM 21 2 73 0mm 4 8mm to 5 2mm LFD25 76MM 21 2 76 0mm 4 3mm to 4 7mm LFD30 2 3 88 9mm 5 0mm to 5 6mm LFD40 4 114 3mm 5 4mm to 6 4mm The LFD models are approved for use on stainless steel and brass pipe only Do NOT u...

Page 2: ... all waterflow detectors When grounding is required clamp wire with screw in hole located between conduit entrance holes See Figure 10A page 4 5 If a second conduit entry is required remove the knockout plug using a flat blade screwdriver as shown on Figure 10B page 4 Strike sharply with a hammer to pierce the wall of the knockout plug Move to an adjacent wall section and repeat until the plug fal...

Page 3: ...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 fro...

Page 4: ...ion or exclusion may not apply to you This Warranty gives you specific legal rights and you may also have other rights which vary from state to state 1 Waterflow detectors may not work or operate properly if sprinkler pip ing being monitored is plugged with pipe scale mud stones or other foreign material Sprinkler systems should be checked regularly for such blocking material following the instruc...

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