INSTALLATION AND MAINTENANCE INSTRUCTIONS
2100AT Photoelectronic
Smoke Detector with Fixed Heat
and Integral Temp-3 Sounder
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
Figure 1. Wiring diagram for the 2100AT detector:
IMPORTANT: OBSERVE POLARITY
Polarity must be observed on the power and remote annunciator connections.
+
INITIATING
EOL
LOOP
–
+
+
–
P
W
R
+
–
A
+
A-
UL LISTED
COMPATIBLE
CONTROL
PANEL
RA400Z
REMOTE
ANNUNCIATOR
NOT
USED
OPTIONAL CLASS A WIRING
NOTE: Only one detector per zone shall be used, unless when in alarm the panel switches
the zone to a reverse polarity, noncurrent-limited power supply. The 2100AT
detector shall not be mixed with other 2-wire detector types on the same zone.
A78-2336-15
Specifications
Diameter:
5.5 inches (140 mm)
Height (including mounting bracket): 2.05 inches (52 mm)
Weight:
7.5 oz. (210 g)
32° to 100°F (0° to 38°C)
10% to 93% Relative Humidity, Noncondensing
Reset by momentary power interruption
85 dBA minimum when in alarm or with supply polarity reversed
135°F Fixed Temperature Electronic Thermistor
Operating Temperature Range
Operating Humidity Range:
Latching Alarm:
Audible Signal:
Heat Sensor:
Electrical Ratings
System Voltage (nominal):
Minimum:
12 or 24 VDC
8.5 VDC
Maximum:
35 VDC
Maximum Ripple Voltage:
Standby Current:
Alarm Ratings:
30% of nom. Voltage (peak to peak)
50 µA average, 100 µA maximum
29 mA typical at 12 VDC, 63 mA typical at 24 VDC, 100 mA maximum
(If used, the RA400Z Remote Annunciator operates within the specified detector
alarm currents.)
1.8 VDC minimum
0.6 seconds maximum
30 seconds maximum (after 60 sec. reset)
A77-716B, 12/24 VDC
NOTE: Only one detector per zone shall be used, unless when in alarm the panel
switches the zone to a reverse polarity, non-current limited power supply. For
panels that do not provide this feature, a reversing relay, such as System Sensor’s
RR-2, may be used. When utilized with the 2100AT, it allows for more than one de-
tector to be utilized on a loop. Some panels may require the use of programmable
outputs. Refer to System Sensor literature for further information on the RR-2.
The 2100AT detector shall not be mixed with other 2-wire detectors on the same
zone.
Reset Voltage:
Reset Time:
Start-up Time:
EOL Relay:
Special Considerations:
–Due to the built-in temporal pattern, use this detector only with a non-coded
power source.
D200-69-00
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I56-1145-05R
System Sensor smoke detectors are marked with a compat- Testing
ible identifier located as the last digit of a five digit code NOTE: Before testing, notify the proper authorities that
stamped on the back of the product. Connect detectors only
to compatible control units as indicated in System Sensor’s
compatibility chart which contains a current list of UL-
listed compatible control units and detectors. A copy of this
list is available from System Sensor upon request.
the smoke detector system is undergoing mainte-
nance and will be temporarily out of service. Dis-
able the zone or system undergoing maintenance
to prevent unwanted alarms.
Detectors must be tested after installation and following
periodic maintenance. Test the 2100AT as follows:
Wire connections are made by stripping about 1/4 inch of A. Test Switch
insulation from the end of the feed wire, inserting the wire
into the appropriate terminal, and tightening the screw to
secure the wire in place.
1. A recessed test switch is located on the detector hous-
ing (See Figure 4).
2. Press and hold the recessed test switch with a 0.18
inch maximum diameter tool such as an allen wrench
or small screwdriver.
Installation
3. The detector’s LED should light within 5 seconds.
B. Test Module (System Sensor Model No. MOD400R).
The MOD400R test module can be used with a DMM or
analog voltmeter to check the detector sensitivity as de-
scribed in the test module’s manual.
WARNING
Remove power from the control unit or initiating device cir-
cuits before installing detectors.
1. Wire the plug-in screw terminal block per Figure 1 and
plug the terminal block into the detector.
C. Smoke Entry Test
Hold a smoldering punk stick or cotton wick at the side
of the detector and gently blow smoke through the de-
tector until the unit alarms.
2. Align the arrows on the detector with the arrows on the
mounting bracket.
3. Turn the detector clockwise in the mounting bracket un-
til it clicks into place.
4. After all detectors have been installed, apply power to
the control unit or initiating device circuits.
5. Test the detector as described in TESTING.
6. Reset the detector at the system control panel.
7. Notify the proper authorities the system is in operation.
D. Direct Heat Method (Hair dryer of 1000-1500 watts)
Direct the heat toward either of the side thermistors.
Hold the heat source about 12 inches from the detector
in order to avoid damage to the plastic. The detector will
reset only after it has had sufficient time to cool and the
power source has been momentarily interrupted.
Both smoke and heat detection testing are recommended
for verifying system protection capability.
CAUTION
Dust covers are an effective way to limit the entry of dust
into smoke detector sensing chambers. However, they may
not completely prevent airborne dust particles from enter-
ing the detector. Therefore, System Sensor recommends the
removal of detectors before beginning construction or other
dust producing activity. Be sure to remove dust covers from
any sensors that were left in place during construction as
part of returning the system to service.
A detector that fails to activate with any of the above tests
should first be cleaned as outlined in MAINTENANCE. If
the detector still fails to activate, return it for repair.
Notify the proper authorities the system is back in
operation.
Maintenance
NOTE: Before removing the detector, notify the proper au-
thorities that the smoke detector system is under-
going maintenance and will be temporarily out of
service. Disable the zone or system undergoing
maintenance to prevent unwanted alarms.
Figure 4. Top and side views of test switch position:
NOTE: Before removing the detector cover, note the posi-
tion of the thermistors. Make sure the thermistors
are not bent over when the housing is replaced.
PUSH RECESSED
LED
SWITCH WITH A
0.18″ MAX. DIAMETER TOOL
A78-2564-04B
RECESSED TEST
TEST MODULE
SWITCH
SOCKET
A78-2564-04A
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I56-1145-05R
1. Remove the detector housing by gently prying the four
9. Reinstall the detector.
housing tabs on the bottom of the base with a small- 10. Notify the proper authorities that the system is back in
bladed screwdriver and pull the housing from the base.
Use caution to avoid damaging the thermistors.
2. Vacuum the screen carefully without removing it.
3. Remove screen assembly, pulling straight out (see Fig-
ure 5).
operation.
Figure 5. Removal of cover and screen for cleaning:
4. Remove the sensing chamber cover.
5. Clean the sensing chamber by vacuuming or blowing
out dust and particles.
REMOVABLE
HOUSING
6. Replace the sensing chamber cover, aligning the arrow
on the cover top with the arrow on the printed circuit
board.
REMOVABLE
SCREEN
7. Replace the screen by placing the screen assembly over
the sensing chamber cover and twisting until it snaps
into place.
SENSING CHAMBER
COVER
8. Replace the housing by aligning the three triangular
slots on the base with their counterparts on the hous-
ing. Gently press the housing until it locks in place.
Check to make sure that the thermistors are in the up-
right position.
A78-2565-05
SENSING
CHAMBER
BASE
Please refer to insert for the Limitations of Fire Alarm Systems
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector to be free from de-
fects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no
other express warranty for this smoke detector. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter
the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part of
the smoke detector which is found to be defective in materials or work-
manship under normal use and service during the three year period com-
mencing with the date of manufacture. After phoning System Sensor’s toll
free number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifica-
tions, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or conse-
quential damages, so the above limitation 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.
D200-69-00
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I56-1145-05R
2001 System Sensor
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