System Sensor 2412B, 2412THB, 2424, and 2424TH Direct Wire - Manual (Page 3)

D400-06-00 3 I56-286-05R
Installation
WARNING
Remove power from initiating-device circuits before install-
ing detectors.
1. Wire detector per installation guidelines.
2. Line up arrows on the detector with arrows on the
mounting bracket.
3. Turn the detector clockwise until the detector 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 provide limited protection against airborne dust
particles during shipping. Dust covers MUST be removed
before the smoke detectors can sense smoke. Remove sen-
sors before beginning heavy remodeling or construction.
CAUTION
Smoke detectors are not to be used with detector guards
unless the combination has been evaluated and found
suitable for that purpose.
Testing
Before testing, notify the proper authorities that the smoke
detector system is undergoing maintenance, and therefore
the system will temporarily be out of service. Disable
the zone or system 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).
���
�������� ����
������
���� �������� ������ ����
� ��� ���� �������� ����
���� ������
������
Figure 4. Top and side views showing position of recessed test switch:
S0167-00
Detectors must be tested after installation and following
periodic maintenance. The 2412 and 2424 may be tested
as follows:
A. Recessed Test Switch
1. A test switch is located on the detector housing (see
Figure 4).
2. Push 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 (Model R59-18-00)
1. Remove the detector cover by placing a small-bladed
screwdriver in the side slot of the detector cover,
twisting slightly until the cover can be turned coun-
terclockwise 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, indicat-
ing alarm and annunciating the panel.
6. Put the cover back by gently rotating it clockwise
until it locks in place.
C. Test Module (System Sensor Model No. MOD400R)
The MOD400R is used with an analog or digital voltme-
ter to check the detector sensitivity as described in the
MOD400R manual.
D. Aerosol Generator (Gemini 501)
Set the generator to represent 4%/Ft. to 5%/Ft. obscu-
ration as described in the Gemini 501 manual. Using
the bowl shaped applicator, apply aerosol until unit
alarms. 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.