N500-05-00 2 I56-054-09R
WARNING
FSH-751 is
not
designed to operate in explosive environments.
Wiring Instructions
All wiring must be installed in compliance with the
National Electrical Code, applicable local codes, and any
special requirements of the Authority Having Jurisdiction.
Proper wire gauges should be used. The installation wires
should be color-coded to limit wiring mistakes and ease
system troubleshooting. Improper connections will prevent
a system from responding properly in the event of a fire.
Remove power from the communication line before
installing detectors.
All wiring must conform to applicable local codes, ordi-
nances, and regulations.
1. Wire the sensor base per the wiring diagram, please see Figure 1.
2. Set the desired address on the sensor address switches.
NOTE:
Some panels support extended addressing. In order to set the sensor
above address 99 on compatible systems, carefully remove the stop on
the upper rotary switch with thumb as shown in Figure 2.
3. Insert 5-wire connector on mounting base into 5-pin connector on the
unit. Install the detector into the sensor base. Push the detector into the
base while turning it clockwise to secure it in place. (Please see Figure
5 and INSTALLING DETECTOR INTO BASE on page 4 for specific direc-
tions.
4. After all detectors have been installed, turn on the auxiliary power sup-
ply, then apply power to the control unit and activate the communica-
tion line.
5. Test the detector(s) as described in the
TESTING
section of this
manual.
CAUTION
Dust cover must be removed before the detector can sense smoke.
Testing
Before testing, notify the proper authorities that the system
is undergoing maintenance, and will temporarily be out of
service. Disable the system to prevent unwanted alarms.
All detectors must be tested after installation and periodi-
cally thereafter. Testing methods must satisfy the Authority
Having Jurisdiction (AHJ). Detectors offer maximum per-
formance when tested and maintained in compliance with
NFPA 72.
The sensor can be tested in the following ways:
A. Functional: Magnet Test (P/N M02-04-01 or M02-09-
00)
This detector can be functionally tested with a test magnet. The test
magnet electronically simulates smoke in the sensing chamber, testing
the detector electronics and connections to the control panel.
1. Hold the test magnet in the magnet test area as shown in Figure 3.
2. The detector should alarm the panel. Two LEDs on the detector are
controlled by the panel to indicate sensor status. Coded signals,
transmitted from the panel, can cause the LEDs to blink, latch on,
or latch off. Refer to the control panel technical documentation for
detector LED status operation and expected delay to alarm.
B. Smoke Entry: Aerosol Generator
Aerosol generators for smoke entry testing are available from a number
of third party manufacturers (e.g., Gemini Scientific). Following the
manufacturer’s instructions, apply aerosol until the panel alarms.
A detector that fails any of these tests should be retested.
If the detector still fails any test, have its filter replaced (see
instructions below) and retested. Finally, if the detector con-
Figure 1. Wiring diagram:
NOTIFIER CONTROL PANEL
AUX.
POWER
SUPPLY
+
+
–
–
AUX+
AUX–
AUX+
AUX–
2(–)
3(RA)
4(S)
1(+)
1(+)
2(–)
3(RA)
4(S)
N500-05-00 3 I56-054-09R
A78-1253-06
Figure 2. Rotary decade address switches:
Figure 3. Test magnet position:
Figure 4. Replacing the filter cover:
tinues to fail after replacing the filter, it must be returned for
repair or replacement.
When testing is complete, restore the system to normal
operation and notify the proper authorities that the system
is back in operation.
Cleaning
The unique design of the FSH-751 eliminates the need for
typical detector cleaning. The only maintenance necessary
is replacing the filter, which is signaled by a trouble condi-
tion at the panel (see below).
The FSH-751 smoke detector has been designed to maxi-
mize the amount of time before maintenance is required.
The detector utilizes a replaceable filter that may become
clogged over time. The detector monitors itself to insure
that the filter has not become clogged. Because environ-
mental conditions can vary significantly, the amount of time
before maintenance could vary significantly as well. To fully
understand the maintenance requirements of the FSH-751 in
its installed location, it is recommended that the following
test program be conducted.
1. Install the FSH-751 detector in the desired location.
2. Connect the detector to the fire alarm control panel.
3. Maintain a record for at least 90 days of any mainte-
nance performed on or required by the detector.
4. At the end of the test period, use the record to develop
and schedule maintenance. The FSH-751 should be
serviced at regular intervals to insure that the fire alarm
system provides continuous protection.
Replacing the Filter
IMPORTANT:
When the filter becomes too clogged to draw adequate air into
the unit, power is automatically cut from the detector, sending
a trouble signal to the fire control panel. After 5 minutes, power
is restored to the detector for 72 hours. After 72 hours, power is
cut again and the detector will remain off-line until the filter is
replaced.
Note: The unit has two filters. The replaceable filter is inside the cover. A
permanent filter is mounted to the unit.
Alignment marks are
provided on the cap
and top of the perma-
nent filter.
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