SLK-24FH Datasheet
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StK-2 4FIn PHOTOELECTRIC/HEAT SMOI(E DEIECTOR
APPLICATIONS
The SLK-24FH can be used in all areas where Photoelectric Smoke Detectors are required. It is best suited
for smoldering or flaming fires.
The 135SFheat sensorcan initiatean alarm independently. The heat detector is UL listed for 50'spacing.
HSB, HSC-4R,HSC-R,or YBA-NI sryle basesmay i'le
used with the SLK-24FH.Currenr compatible devices
are SLK-24F,SLK-24FL and SIH-24F.
OPERATION
STANDARD FEATURES
o Self-restoringintegral 135Sheat sensor, 50' rating
' [.ow Profile, 1.8" high
. 2 or 4 wire basecompatibility, relay basesavailable
. Higtrly stable operation, RF/transient protection
. Low standby crrrent, 45q4\nominal
. Built-in power/alarm LED
o Nondirectionalsmokechamber
. Vandal resistantsecurritylocking featurre
. Built-in magnetic detectorsensitivity featr-ue
. Compatible with SIH-24Fionization detectors
' Meets otrtlined requiremens in the NFPAp,
Irnpeaion Testingand Maintenance, Clnpter /
PRODUCT SPECIFICATIONS
Heat Detector
Ught Source
RatedVoltage
'$TorkingVoltage
Maximum Allowable
Voltage
Supervisory Current
Surge Current
Alarm Current
AmbientTemperature
135'F Self-Restoring,
Fixed Temperarure
GaALAsInfrared
Emitting Diode
17.6 - 33.0 VDC
15.0 - 363VDC
42VDC
45pe, @ 24 VDC
200pA @ 24 VDC
150mA @ 24 VDC
32"F to 120'F
(0'C to 49"C)
Color & CaseMaterial
Ivory ACS
SensitivityTestFeature: Magneticallyactivated
dtral reed sq/itdl sensitivitytest
Mounting: Referto FIA 24 YoltConventional
Detector BaseData Sheet
The unit is comprised of an LED light source and silicon photo diode receiving element. In a normal standby
condition, the receiving element receivesno light from
the pulsing light source. In the event of a fire, smoke
entersthe detectors and light is reflected frorn the smoke
particles to the receiving element. The light received is
converted into an electronic signal.Signalsare processed
in the comparator, and when two consecutive signals
exceeding the basic level are received within a specified
period of time, the time delay circuit triggers the SCR
'fhe
switch to activate the alarm signal.
StatusLED lights
continuously during the alarm period, if the alarm is
activatedby smoke. Vhen the alarm is activatedby heat
the Status LED will not light.
The fixed tempera re heat element opemtes independentlyfrom the smoke sensingchamber, and causesan
alarmat the control panel when the air temperature
reachesapproximately 135SF,whether or not smoke is
present.
ENGINEERING
SPECIFICATIONS
The contractor shall ftimish and install where indicated
on the plans, the combination detector head and twistlock base shall be UL listed as compatible with a UL
listed fire alarm panel.
The base shall permit direct interchange with HOCHIKI
America SLK-24F Photoelectric Detector.
PRODUCT LISTINGS
Underwriters laboratories: 51383
FactoryMunral: OQ3AO.AY, OV5A8.AY or
O>6A4AY (rydins onhe Wifd)
CSFM*: 7272-0470:707
HochakiAmerica corporation
7051 VillageDrive. BuenaPark,CA 90621-2268
Phone: 7141522-2246. Fax: 7141522-2268
TectnicalSupport 800/8456692or technkalsupport@hochiki.corn
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Made in lhe USA
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ENGINEERING SPECIFICATIONS. continued
9LK-24FLlow sensitivity photoelectric smoke cletector, SIH-24F ionization type smoke
detecto r, and/or DFE-135/
190fixed temperatLlreheat detector. The base shall limit the alarm current avalableto
detectors. Baseshall be appropnate twist-lock base HSB, HSC-4R,HSC-R,or yBA-M style.
The smoke detector shall have a flashing stanrsLED forvisual supervision. \vhen
the detector is acnrated,the flashing
LED will latch on steady at ftrll brilliance. The detector may be resetby acnratingthe
control panel resetswitch.
The sensitivityof the detector shall be capable of being measured.
The vandal-resistant,security locking feanrre shall be useclin those areasspecified.
The locking feanrre shall be field
removable when not required.
It shall be possible to perfiorm a furnctional test of the detectorwithout the need of generating
smoke. The test method
shall simulate effects of products of combustion in the chamber to ensure testing Jf
d"t".to, circuits.
To facilitate installation, the detector shall be non-polayVe_d.voltage and RF transient
suppression techniques shall be
employed to minimize falre alarmpotential. Atxiliary SPDT relays"shallbe installed
where indicated.
SLK.Z4FH SENSITTWTY TEST PROCEDURE
NOTE: This method of sensitivitv testing is only intended for HoGHIKI America
smoke detector moclelsSIH-24F,
and sLK Seriesthat contain a label which identiiies this specific feanrre.
see Figure 1. Do Nor arremprro Lrserhis
method of sensitivity tesring on derecrorswithout this labei.
Figwr 1
BottomView of
Identifring Label
THIS DETECTORCONTAINS
A BUILT.INSENSITIVITY
TEST FEATURE
TEST DEVICES Sensitiviry testing is performed with the Hochiki America
Alarm Test Magner, parr Number 070G.00960,(Figure 2A) orrheHochiki
America TRT-A 100 smoke Derecror Tester/Removal Tool (Figure 2B).
r
Figure 2A: Alarm Test Magnet
TqVn
Fr
SideVm)
Figure 28
TRT-A100Sensitiviry
TestProcedure
TEST PROCEDURE
1' \rith detectorwired toappropriate initiating circuit orcuffentlimited power
source and with normal applied poq/er, place a magnet as shown in Figr.rre
3.
2. \Vait at least six seconds. Detector SHOULD alarmand LED shouldlightPlace magner on detector as shown in Figure 4 (opposite side).
1
4. tvait at least six seconds. Detector sHouLD Nor alarm.
5. If detector does not alarmwhen magnet is positioned as in Figure 3 or does produce
anararm
when lrlagnet is positioned as in Figure 4, detector is notwithii specrfied sensitivity
limits and
may require service' SeeTechnical Bulletin FIA-88(November,%) formore
inforrnation.
Fignrc f
SLK-24FH: Placing
the Magnet
Figurc 4
SLK-24FH:
The Magnet
on the OppositeSide
wARl\rNG: conduct testing only under Normal sundby conditions. Abnormal
or Low power conditions rruly affect
sensitivity Always reset power prior to testing of next unit. Magnet placement identical
for all detectorswith built-in
sensitivity test feanrre.
Hochiki America Corporation. SIJ-24
Specificationssublect to change without notice.
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