DSC WS4936 User manual

Introduction
The WS4936 / WS4936EU / WS8936 is a wireless pho-
toelectric smoke detector with a fixed temperature and rate of
rise heat detector, and an internal piezoelectric alarm. Four
versions are available: US version (UL), Canadian version
(ULC), International version (EU), and Australian version
(AUS).
NOTE: Heat detection based on rate of rise has not been
investigated by UL/ULC.
NOTE: AU and EU versions do not include a fixed tem-
perature heat alarm, but DO include a rate of rise
alarm.
HUSH/TEST BUTTON
Operation
Approximately every 7 to 8 seconds the unit tests for a smoke
or heat alarm condition. During this sequence the unit also
performs self diagnostics, and checks for tampers and faults.
During normal operation the green LED will flash every 12
seconds and the sounder will not sound.
Smoke Alarm
The smoke detector will go into alarm when the signal level
exceeds the “alarm” threshold and automatically restore
when the signal level falls below the alarm “restore”
threshold. During an alarm the LED will flash 1/second and
the sounder will sound the evacuation temporal pattern (UL,
EU, ULC).
Alarm Silencing
This smoke alarm is provided with an automatically resettable
alarm silencing feature. When the sensor is in alarm, by press-
ing the Test/Silence/Reset button it will silence the local
annunciation of the alarm and transmit an alarm restoral
event to the control panel. The LED will flash every 8 seconds
(for up to 10 minutes) to indicate the alarm has been
silenced.
29009523 R001
The flashing LED will stop when the unit returns to normal
operation. The alarm silence feature has a fixed time setting
that desensitizes the smoke alarm for 8 minutes.
Alarm silencing does not disable the smoke alarm but rather
reduces its smoke sensitivity. Following the silenced period
the smoke alarm restores automatically to its intended oper-
ation. If smoke around the unit is dense enough to suggest a
potentially dangerous situation, it will stay in alarm, or may
return to the alarm state quickly.
Detector Trouble
When the detector has a general fault, the yellow LED blinks
once every four seconds and there is a chirp every 48
seconds. After 12 hours, the panel will display a loss of super-
vision message.
Status LEDs
Sounder
(do not pulse the sounder
and LEDconcurrently)
Normal Green flash every 12
seconds Off
Heat
Alarm
Red flash every 1
second ANSI S3.41 temporal 3
Heat
Test
Red flash every 1
second ANSI S3.41 temporal 3
Smoke
Alarm
Red flash every 1
second
ANSI S3.41 temporal 3
(press button to hush for 5-
10 minutes)
Smoke
Test
Red flash every 1
second
ANSI S3.41 temporal 3
(press button to hush for 5-
10 minutes)
Test
Alarm
Red flash every 1
second ANSI S3.41 temporal 3
Freeze
Warning
3 yellow flashes every
4 seconds Off
Detector
Trouble
Yellow flash every 4
seconds
One chirp every 48
seconds
Low
Battery
Yellow flash every 12
seconds
One chirp every 48
seconds (press button to
hush for 12 hours)
Detector
Dirty
Yellow flash every 8
seconds
One chirp every 48
seconds
Power-
up
Red, yellow, green,
flash sequence
One chirp at the end of the
power-up sequence
Tamper
Red, yellow, green
flash sequence every
12 seconds
Off
Table 1: Detector and Status Indication
1
WS4936/WS4936EU (433MHz)/WS8936 (868MHz) Series
Wireless Smoke Detector
Installation and Operating Instructions
Read this instruction sheet thoroughly before installation and use of the WS4936 / WS4936EU/ WS8916

Detector Dirty Feature
When the detector has been contaminated, the yellow LED
blinks once every 8 seconds and there is a chirp every 48
seconds. Refer to the MAINTENANCE section for cleaning
the detector. After 12 hours, the panel will display a loss of
supervision message.
Heat Alarm
The heat detector (UL/ULC versions only) will go into alarm
when the heat signal level exceeds the heat alarm threshold
(135ºF/57ºC); and will automatically restore when the heat sig-
nal level falls below the heat alarm threshold (restore). The
detector will also go into heat alarm if there is a rapid
increase in the temperature over a short period of time. Dur-
ing an alarm the LED will flash 1/second and the sounder will
sound the evacuation temporal pattern (UL, EU) or con-
tinuous beeps (ULC).
Tamper
The removal of the detector from the mounting plate initiates
a “tamper” transmission. The tamper condition is restored
after the detector is mounted on the plate.
Wireless Transmissions
A supervisory message is transmitted at 64 minute intervals
(12 minutes in EU model) to the control panel. If the signal is
not received the control panel determines that the detector is
missing.
The detector transmits the following:
lAlarm / Alarm Restore - (heat or smoke alarm). Trans-
mitted at time of occurrence.
lTamper / Tamper Restore - (tamper switch activated) 10
second maximum delay on restore before transmission.
lLow Battery - (battery voltage falls below threshold). Bat-
tery voltage is tested & transmitted at the time of a super-
visory or other transmissions.
lTrouble - (detector fault or sensor compensation limit
reached). Troubles are transmitted at the time of occur-
rence (one trouble per supervisory interval).
Batteries
NOTE: The batteries must be replaced by service persons
only.
The wireless smoke heat alarm is powered by 3 AAA Dur-
acell Procell PC2400 or 3 AAA Energizer E92 batteries
(included). The detector regularly checks for a low battery. If a
low battery is detected, the transmitter sends a low battery
message to the control panel, which displays the detector's ID
at low battery. In addition, the yellow LED of the detector will
blink every 12 seconds. The detector's sounder will chirp
every 48 seconds (yellow LEDcontinues to blink) until the bat-
teries are replaced. Pressing the hush button will silence the
chirps for 12 hours, if no other trouble conditions exist. The
batteries should be replaced WHENthe chirps begin. Be
sure to replace the batteries with fresh ones.
Battery Installation and Replacement
To replace batteries:
1. Remove the detector from its mounting base by twisting
the detector counterclockwise. Remove and dispose of
the batteries according to local regulations.
2. To ensure a proper power-down sequence, wait a min-
imum of 20 seconds before installing new batteries.
3. Install 3 new AAA batteries (available from a local Dur-
acell or Energizer dealer) in the battery compartment. If
the batteries are incorrectly inserted, please remove
them carefully with a non-conductive tool and correctly
re-insert them.
BATTERY COMPARTMENT
4. Re-install the detector on its mounting base by turning
the detector clockwise until the mating marks align.
5. After the power-up sequence, the green LED should
blink once every 12 seconds to indicate normal oper-
ation. If the batteries are not installed correctly, the
detector will not operate and the batteries may be dam-
aged. If the detector does not power up, check that the
batteries are installed correctly and fully charged.
6. Test the detector (as described later).
CONSTANT EXPOSURES TO HIGH OR LOW
TEMPERATURES OR HIGH HUMIDITY MAY REDUCE
BATTERY LIFE.
Installation Instructions
The WS4936 / WS4936EU / WS8936 Series wireless smoke
detector shall be installed and used within an environment
that provides the pollution degree max 2 and overvoltages
category II in NON HAZARDOUS LOCATIONS, indoor only.
The equipment is designed to be installed by SERVICE
PERSONS only; (SERVICE PERSON is defined as a person
having the appropriate technical training and experience
necessary to be aware of hazards to which that person may
be exposed in performing a task and of measures to minimize
the risks to that person or other persons.)
1. Smoke Detector Placement
On smooth ceilings, detectors may be spaced 9.1m (30 feet)
apart as a guide. Other spacing may be required depending
on ceiling height, air movement, the presence of joists, unin-
sulated ceilings, etc. Consult National Fire Alarm Code NFPA
72 Chapter 11, CAN/ULC-S553- 02 or other appropriate
national standards for installation recommendations.
lDo NOT locate smoke detectors at the top of peaked or
gabled ceilings; the dead air space in these locations
may prevent the unit from detecting smoke. Avoid areas
with turbulent air flow, such as near doors, fans or win-
dows. Rapid air movement around the detector may pre-
vent smoke from entering the unit.
lDo NOT locate detectors in areas of high humidity.
lDo NOT locate detectors in areas where the temperature
rises above 38ºC (100ºF) or falls below 5ºC (41ºF).
lDo NOTlocate detectors directly above a sink, stove or
oven.
lDo NOT locate detectors within 5 feet (1.5m) of any cook-
ing appliance.
Install Smoke detectors in accordance with NFPA 72, Chapter
11.
2

“Smoke detectors shall be installed outside of each sleeping
area in the immediate vicinity of the bedrooms and on each
additional story of the family living unit, including basements
and excluding crawl spaces and unfinished attics. In new con-
struction, a smoke detector also shall be installed in each
sleeping room.”
2. Mount Smoke Detector Backplate
NOTE: These alarm devices should only be installed by a
competent engineer / technician.
This device should not be used with a guard.
Once a suitable location is found, mount the detector back-
plate.
Install the mounting base on the ceiling or on the wall (if local
ordinances permit) using screw locations as required. Use
the two screws and anchors provided. Maneuver the base so
the screws are at the elbow of the screw slots and secure.
100 mm (4 in.) minimum
100 mm (4 in.)
minimum
3. Mounting
Fit the detector inside the base by aligning it over the base
(detector's alignment notch should be slightly offset from the
mounting base tamper release tab) then turn the detector
clockwise until it clicks in place.
4. Test Unit
NOTE: The central monitoring station (if used) should be noti-
fied prior to the test being generated. This will pre-
vent a false alarm and an unnecessary response
from the central monitoring station.
Initiate test by pressing the test button for 5 seconds minimum.
Alarm activation is indicated by the flashing LED, the
sounder, and transmission of the alarm signal to the control
panel. The detector restores to normal when the test button is
released.
NOTE: Allow a minimum of 20 seconds after power up and ,
after test, alarm or tamper restore activations. Do not
use test button when smoke is present.
NOTE: If the detector is in one of the following states when a
test is initiated; it will not enter an alarm state.
lTamper, (detector not installed on mounting plate)
lCompensation Trouble
lOther internal faults that could prevent a smoke or heat
alarm
5. Device Enrollment
The 6-digit serial number located on the back of the smoke
detector housing must be enrolled into the alarm control
panel with Installer programming. Refer to the receiver Install-
ation Manual for details. For placement tests remove detector
from backplate for one second (tamper) then reattach. Wait at
least 30 seconds for test result before activating again.
Owner's Instructions
Fire Safety In The Home
Most fires occur in the home, and to minimize this danger, it is
recommended that a household fire safety audit be con-
ducted and a family escape plan be developed.
Household Fire Safety Audit
1. Are all electrical appliances and outlets in safe con-
dition? Check for frayed cords, overloaded lighting cir-
cuits, etc. If you are uncertain about the condition of
your electrical appliances or household service, have a
professional evaluation.
2. Are all flammable liquids safely stored in closed con-
tainers, and in a cool and well ventilated area? Clean-
ing the unit with flammable liquids should be avoided.
3. Are hazardous materials (i.e., matches) out of the
reach of children?
4. Are furnaces and wood burning appliances properly
installed, clean, and in good working order? If in doubt,
have a professional evaluation.
Family Escape Planning
There is often very little time between the detection of a fire
and the time it becomes deadly. Because of this, it is very
important that a family escape plan be developed and
rehearsed.
lEvery family member should participate in the escape
plan.
lStudy the possible escape routes from each location
within the house. Since many fires occur at night, special
3

attention should be given to the escape routes from sleep-
ing quarters.
lIt is essential that escape from a bedroom be possible
without opening the interior door. Consider the following
when making your escape plans:
lEnsure that doors and windows that open to the outside
are easily opened. Ensure that they are not painted shut
and that the locking mechanisms operate smoothly.
lIf opening or using the exit is too difficult for children, the
elderlyor handicapped, plans for their rescue should be
developed. This plan includes making sure that those
who are to perform the rescue can promptly hear the fire
warning signal.
lIf the exit is above the ground level, an approved fire lad-
der or rope should be provided, as well as training in its
use.
lExits on the ground level should be kept clear. Be sure to
remove snow from exterior patio doors in the winter and
that outdoor furniture or equipment does not block exits.
lThe family should have a predetermined assembly point
where everyone can be accounted for; for example,
across the street or at a neighbor’s house.
lOnce everyone is out of the house, call the Fire Depart-
ment.
lA good plan emphasizes a quick escape. Do not invest-
igate first or attempt to fight the fire, and do not attempt to
rescue belongings or valuables as this takes up time.
Once outside, do not re-enter the house; wait for the Fire
Department.
lWrite the plan down and rehearse it frequently so that
should an emergency ever arise, everyone will know
what to do. Revise the plan as conditions change; for
example, when there are more or fewer family members
in the home or if there are changes to the house.
lMake sure your fire warning system is operational by con-
ducting weekly tests. If you are unsure about system oper-
ation, contact your smoke detector installer or dealer.
lDSC recommends that you contact your local Fire Depart-
ment and request further information on home fire safety
and escape planning. If available, have your local fire pre-
vention officer conduct an in-house fire safety inspection.
Testing Your Smoke Detector
Follow the test procedure described here or contact your
smoke detector dealer or installer for testing instructions.
DSC recommends that you test the entire alarm system
at least once a week to verify the operation of all system
functions.
Smoke Detector Unit Test
Initiate test by pressing the test button for 5 seconds (min.),
the sounder makes clicking noises during this time. Press the
button until the unit alarm sounds, an alarm should be sent to
the control panel. When the button is released, the alarm
should cease. If this does not occur, ensure batteries are the
correct type, in good condition and are installed correctly (see
3. Install Batteries in the Installation Instructions section).
Upon completing the functional testing of the smoke detector,
check the unit’s sensing chamber to ensure proper operation.
To test the sensing chamber, wave a lit cotton wick or punk
stick around the outside of the unit until a generous amount of
smoke enters the sensing chamber or the unit alarms. If the
smoke detector does not function properly, call your smoke
detector installer or dealer for service.
Owner’s Maintenance
The smoke detector is designed to require minimum main-
tenance. If the case becomes dusty, vacuum with a small
brush attachment. If the case is greasy, wipe the case gently
with a soft cloth slightly dampened with soapy water.
Never disassemble the smoke detector; there are no user
serviceable parts inside the unit. You may only remove
detector from backplate to replace batteries if not ser-
viced by installer. When replacing the batteries, follow the
instructions specified within the Installation Instructions,
Item 3 Install Batteries.
Never paint the unit. Paint may prevent smoke from enter-
ing the unit. If you are planning renovations or repainting,
contact your installer and ask that the unit be temporarily
removed until work is complete.
If the unit is located in an area where it is exposed to high
levels of dust or insects and causes false alarms, it may
require service; contact your smoke detector installer or
dealer.
Testing and maintenance procedures shall be in accordance
with CAN/ULC-S552-02.
Specifications
lRegulatory Listing:UL268/ULC-S531
lDiameter: 5 in (125 mm)
lHeight: 2.5 in (63 mm)
lWeight (including battery): 8.75 oz (243 g)
lColor: White
lSpacing rating:70 ft (21.3 m)
lSensitivity: 1.26 - 2.39%/foot obscuration
lAlarm Sensitivity (threshold) EU: complies with
EN14604
lAlarm Sensitivity (threshold) UL: 3.0±0.8%/ft obscur-
ation, ULC: 2.0±0.5 %/ft obscuration
lAudible Signal (ANSI Temporal 3): 85dBA min. in alarm
lSounder Alarm Pattern UL, ULC, EU: evacuation tem-
poral pattern
lOperating Temperature:40° to 100°F (4.4° to 37.8°C)
lOperating Temperature with Heat Detector: 32º-100ºF
(0º-37.8ºC)
lOperating Temperature for Smoke Alarm (Australian ver-
sion): 41º-113ºF (5º-45ºC)
lHeat Alarm: 135ºF (57ºC)
lHumidity: 15%-90% RH, non-condensing
lApproved Batteries: 3 AAA Energizer E92 or Duracell
Procell PC2400
lAlarm Silencing (ULC Model) 8 minutes automatically
resettable
lSupervisory Transmission Frequency UL, ULC: 64 min.
intervals
lSupervisory Transmission Frequency EU: 12 minute inter-
vals
lLow Battery Detection: Low battery 14 days remaining
Limited Warranty
DigitalSecurityControlswarrantsthat fora period of twelve monthsfromthe date
of purchase, the productshallbe free of defectsin materialsand workmanship
under normaluse and that in fulfillment of anybreach of such warranty, Digital
SecurityControls shall, at itsoption, repair or replace the defective equipment
upon return of the equipment to itsrepairdepot. Thiswarrantyappliesonlyto
defectsin partsand workmanship and not to damage incurred in shipping or
handling, ordamage due to causesbeyond the controlof DigitalSecurityCon-
trolssuch aslightning, excessive voltage, mechanicalshock, water damage, or
damage arising out of abuse, alteration orimproperapplication of the equip-
ment.
The foregoing warrantyshallapplyonlyto the originalbuyer, and isand shallbe in
lieu of anyand allotherwarranties, whetherexpressed or implied and of allother
obligations or liabilities on the part of DigitalSecurity Controls. DigitalSecurity
4

Controlsneither assumesresponsibilitynorauthorizesanyotherperson pur-
porting to act on itsbehalf to modifyor to change thiswarranty,norto assume for
it any otherwarranty or liabilityconcerning thisproduct.
In no event shallDigitalSecurityControlsbe liable for anydirect, indirectorcon-
sequentialdamages, lossof anticipated profits, lossof time or anyotherlosses
incurred bythe buyer in connection with the purchase, installation or operation or
failure of thisproduct.
Smoke Detectors:Smoke detectorsthat are a part of thissystemmay not prop-
erlyalert occupantsof a fire for a numberof reasons, some of which follow. The
smoke detectorsmayhave been improperlyinstalled orpositioned. Smoke may
not be able to reach the smoke detectors, such aswhen the fire isin a chimney,
wallsorroofs, oron the otherside of closed doors. Smoke detectorsmaynot
detect smoke fromfireson another levelof the residence orbuilding.
Everyfire isdifferent in the amount of smoke produced and the rate of burning.
Smoke detectorscannot sense alltypes of firesequallywell. Smoke detectorsmay
not provide timelywarning of firescaused bycarelessnessorsafetyhazardssuch
assmoking in bed, violent explosions, escaping gas, improperstorage of flam-
mable materials, overloaded electricalcircuits, children playing with matchesor
arson.
Even if the smoke detectoroperatesasintended, there maybe circumstances
when there isinsufficient warning to allow alloccupantsto escape in time to avoid
injuryordeath.
Warning: DigitalSecurityControlsrecommendsthat the entire systembe com-
pletely tested on a regular basis. However, despite frequent testing, and due to,
but not limited to, criminaltampering orelectricaldisruption, it is possible for this
product to failto performasexpected.
Important Information: Changesor modificationsnot expresslyapproved by
DigitalSecurityControlscould void the user’sauthorityto operate thisequipment.
EULA
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DSC recommendsthat the entire systembe completelytested on a regular basis.
However, despite frequent testing, and due to, but not limited to, criminaltam-
pering orelectricaldisruption, it ispossible forthisSOFTWAREPRODUCT to failto
performasexpected.
5

Regulatory Information
Thisproducthasbeen approved bythe California State Fire Marshal(CSFM)pur-
suant to section 13144.1 of the California Health and SafetyCode. See CSFM
Listing No. 7272-1273:125 forallowable valuesand/orconditionsforuse con-
cerning materialpresented in thisdocument. The approvalissubjectto reex-
amination, revision and possible cancellation.
The smoke alarmWS4936 / WS4936EU / WS8936 hasa recommended service
life of 10 yearsundernormalconditionsof use. Please refer to the labelapplied to
the device indicating the recommended replacement year.
Forservicing the unit or replacement batteriesplease callyour installation com-
panythat provided you with the alarmsystem.
NOTE: In Australia, the device shallnot be installed in locationswhere the normal
ambient temperature islowerthan 41°F(5°C)orhigherthan 113°F(45°C).
Thismanualshallbe used in conjunction with the Installation Manualof the alarm
controlpanel. Allthe instructionsspecified within that manualmust be observed.
FCC Compliance Statement
CAUTION: Changesormodificationsnot expressly approved byDSC could void
yourauthorityto use thisequipment.
Thisequipment generatesand usesradio frequencyenergyand ifnot installed
and used properly, in strict accordance with the manufacturer’sinstructions,may
cause interference to radio and television reception. It hasbeen type tested and
found to complywith the limitsforClassBdevice in accordance with the spe-
cificationsin Subpart “B”of Part 15 of FCC Rules, which are designed to provide
reasonable protection against such interference in anyresidentialinstallation.
However, there isno guarantee that interference willnot occurin a particular
installation. If thisequipment doescause interference to television or radio recep-
tion, which can be determined byturning the equipment off and on, the useris
encouraged to tryto correct the interference byone ormore of the following
measures:
•Re-orient the receiving antenna
•Relocate the alarmcontrolwith respect to the receiver
•Move the alarmcontrolawayfromthe receiver
•Connect the alarmcontrolinto a different outlet so that alarmcontroland
receiverare on different circuits.
If necessary, the usershould consult the dealeroran experienced radi-
o/television technician foradditionalsuggestions. The usermayfind the following
booklet prepared bythe FCC helpful: “How to Identifyand Resolve Radi-
o/Television Interference Problems”. Thisbooklet isavailable fromthe U.S.
Government Printing Office, Washington, D.C. 20402, Stock# 004-000-00345- 4.
Industry Canada Compliance Statement:
ThisClassBdigitalapparatusmeetsallrequirementsof the Canadian inter-
ference-causing equipment regulations.
Cet appareilnumérique de la Classe Brespecte touteslesexigencesde règle-
ment surle matérielbrouilleurdu Canada.
IC:160A-WS4936
The term"IC:"before the radio certification numberonlysignifiesthat Industry
Canada technicalspecificationswere met.
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EN14604: 2005/AC:2008
1134-CPR-XXXX
DSC, Toronto, Canada Smoke Alarm Device
© 2015 Tyco Security Products. All Rights Reserved.
Tech Support: 1-800-387-3630 (Canada & U.S.)
or 905-760-3000 • www.dsc.com
6