System Sensor 2112_24S and 2112_24TS Photoelectric User Manual

Page 3

D200-62-00

I56-932-12R

Testing
NOTE: Before testing, notify the proper authorities that

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 2112/24S as follows:
A. Test Switch

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.

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.

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.

D. Direct Heat Method (Model 2112/24TS only – Hair dryer

of 1000-1500 watts)
Direct the heat toward either of the side thermistors.

Figure 3. Wiring diagram for the 2112/24S and 2112/24TS detector:

OPTIONAL CLASS A WIRING

EOL RESISTOR
SPECIFIED BY
PANEL
MANUFACTURER

EOL POWER
SUPERVISION
RELAY (SHOWN
ENERGIZED)
A77-716 12/24V

POWER

DETECTORS

UL LISTED

CONTROL

PANEL

INITIATING

LOOP

–

+
+

–

N.O.

+
+

–

N.O.

: Observe polarity in power and initiating loops when wiring.

NOTE

Figure 4. Top and side views showing position of test switch:

A78-2336-03

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.

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.

A78-2564-05

PUSH RECESSED
SWITCH WITH A
0.18

″

MAX. DIAMETER TOOL

;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;;;

LED

TEST MODULE
SOCKET

RECESSED TEST
SWITCH

C OVER

REMOVAL