System Sensor 2400 and 2400TH Direct Wire - Manual (Page 3)

D400-05-00 3 I56-285-05R
Installation
WARNING
Disable the power from initiating device circuits before
installing detectors.
1. Wire each detector following installation guidelines.
2. Line up arrows on the detector with arrows on the
mounting bracket.
3. Turn the detector clockwise until it clicks into place.
4. After all detectors have been installed, apply power to
the control unit.
5. Test the detector as described under TESTING.
6. Reset the detector at the system control panel.
7. Notify the proper authorities the system is in operation.
CAUTION
Dust covers can be used to help limit dust entry to the detec-
tor. However, these covers are not a substitute for removing
the detector during building construction. Remove any dust
covers before placing the system in service.
CAUTION
Smoke detectors are not to be used with detector guards
unless the combination has been evaluated and found suit-
able for that purpose.
Testing
Before testing, notify the proper authorities that the smoke
detector system is undergoing maintenance, and the system
will be temporarily out of service. Disable the zone or sys-
tem undergoing maintenance to prevent unwanted alarms.
Before testing the detector, look for the presence of the
flashing LED. If it does not flash, power has been lost to
the detector (check the wiring), or it is defective (return for
repair – refer to Warranty information).
Detectors must be tested after installation and following
periodic maintenance. The 2400/2400TH may be tested as
follows:
A. Functional Tests
Recessed Test Switch
1. A test switch is located on the detector housing (See
Figure 4).
2. Press and hold the recessed test switch with a 0.1
inch maximum diameter tool.
3. The detector’s LED should light within 5 seconds.
B. Calibrated Test Card (R59-18-00)
1. Remove the detector cover by placing a small bladed
screwdriver in the side slot of the detector cover,
twisting it slightly until the cover can be turned
counterclockwise for removal.
2. Insert the NO ALARM end of the test card fully into
the test slot (See Figure 5) then slide it counterclock-
wise until it stops.
3. The detector should not alarm after 20 seconds.
4. Remove the test card by sliding it clockwise before
removing, then insert the ALARM end.
5. The LED should latch on within 20 seconds. An alarm
should also be initiated at the panel.
6. Put the cover back by gently rotating it clockwise until
it locks in place.
C. Test Module (System Sensor No. MOD400R/MOD400).
The MOD400R or MOD400 Test Module is used with an
analog or digital voltmeter to check the detector sensitiv-
ity as described in the test module’s manual.
D. Aerosol Generator (Gemini 501).
Set the aerosol generator to represent 4%/ft. to 5%/ft.
obscuration as described in the Gemini 501 manual.
Using the bowl shaped applicator, apply aerosol until
unit alarms.
E. Direct Heat Test (2400TH only).
To test the bi-metallic thermal collector on the 2400TH,
use a low powered heat gun or blow dryer, aiming the
heat source across the detector. Hold the heat source
about 12 inches (30 cm) from the detector to avoid dam-
aging the plastic. When the heat rises to greater than
135°F, the detector will latch in alarm. After the test, the
bi-metallic collector will self-restore.
Notify the proper authorities that the system is back on line.
Detectors that fail these tests should be cleaned as described
under MAINTENANCE and retested. If the detectors still fail
these tests, they should be returned for repair.
Figure 4. Top and side views showing position of
test switch:
S0167-00
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