10.0 REMOTE TROUBLE INDICATOR CONNECTION
Terminals 17, 18 and 19 are for the connection of the optional 3-wire remote trouble indicator (RTI). The RTI
is supervised for grounds and opens. Should an open occur, the system will indicate trouble.
To use the RTI, install trouble relay K1 (4500-0024). Cut the jumper (JRTI) which is located to the LEFT
of Terminals 17, 18 and 19. Connect the RTI per Figure 8.
Circuit ratings: 24 VDC @ .004 amps max. Power limited.
11.0 EARTH GROUND
The FC-72 control must be connected to (earth) ground, per Article 760 of the National Electrical Code.
The connection is made to Terminal 24. This connection will provide maximum protection in the event of
lightning, transients, or electrical disturbance. Failure to connect a ground will result in a reduction in lightning
protection. MINIMUM wire size 14 AWG.
12.0 POLARITY REVERSAL OUTPUT
Terminals 25 and 26 are for the connection of a polarity sensitive remote station receiver via leased telephone
lines. The output is 24 VDC, current limited to 0.13 amp. Reversing relay K2 (4500-0024) must be installed
in the socket provided. Cut Jumper J12 and connect the telephone lines to Terminals 25 (+) and 26 ( - ). In the
alarm condition the relay will operate, reversing the polarity on the telephone lines (Term. 25 will now be
negative and Term. 26 will be positive).
To transmit a trouble signal to the remote station, cut Jumper JT, which is located above relay K1. This will
remove power from the output in the event of a System Trouble, but will not inhibit an alarm signal. Relay K1
must be installed in order to transmit a trouble. The output parameters for the Polarity Reversal circuit are
as follows:
Voltage
19.9 VDC minimum
26.4 VDC maximum
Max. ripple voltage
.071 VAC (RMS)
Standby Current
.010 amp. @ 24 VDC
Alarm Current
.130 amp.
Power limited
Supervised
13.0 AUXILIARY POWER OUTPUT
Terminals 29 (+) and 30 ( - ) supply a continuous 24
VDC nominal output for use only with the Model
301DH duct detector remote test station. This output
is NOT interrupted by the reset switch. See Figure 10.
Voltage
24 VDC (nominal)
Max. ripple voltage
.071 VAC (RMS)
Current
1.75 amp. max.
Power limited
Unsupervised
WHITE
GREEN
CUT JUMPER ON BOARD
NEXT TO TERMINALS.
RELAY K1 MUST BE INSTALLED
RED
17
18
19
Figure 8 Remote Trouble Indicator
25
+
GROUND IS NOT
RELAY K2 MUST BE
INSTALLED. CUT
ELECTRICAL CODE.
PANEL NEUTRAL
OR CONDUIT
ACCEPTABLE.
EARTH GROUND
PER ARTICLE 760
OF THE NATIONAL
CONNECT TO
SEPARATE
24
-
JUMPER J12
26
TELE. LINES
Figure 9 Earth Ground/Polarity Reversal
STANDBY BATTERY FUSED AT 6 AMPS.
COMMON (NEG)
SMOKE DETECTOR OUTPUT
44
31
43
30
TO STANDBY BATTERY
EXT. OUTPUT
29
Figure 10 Power Outputs
9000-0007
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Summary of Contents for FC-72 Series
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