The JA-82ST wireless combined smoke and heat detector
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The JA-82ST is a wireless component of the JABLOTRON ALARMS
OASIS alarm system. It is used to detect fire hazards in the interior of
residential or commercial buildings. It is not designed to be installed
outdoor or in industrial premises. The detector is powered by three LR6
(AA) type alkaline batteries, which are not included. We recommend you buy
them together with the detector. The JA-82ST consists of two independent
detectors – an optical smoke detector and a heat detector. The optical
smoke detector works on the principle detection of scattered light and is
very sensitive to large dust particles which are present in dense smoke.
It is less sensitive to smaller particles generated by the combustion of
liquids such as alcohol. That is why there is also a built-in heat detector
which has a slower reaction but is much better at detecting fire which
generates heat with a small amount of smoke. The detector has a status
reaction (reports its activation and deactivation). The detector should be
installed by a trained technician with a valid certificate issued by an authorized
distributor.
Detector range and location
The smoke detector must be installed so that any smoke easily drifts
into the detector owing to natural thermal circulation, e.g. on the ceiling. It is
suitable for residential buildings but not suitable for free spaces, outdoor
environments or interiors with extremely high ceilings (above 5 m) where
fire by-products can disperse over a large area – the smoke would not
reach the detector position.
The detector must always be placed in the section leading to the exit
of the building (escape route), see Figure 1. If the building has a floor
area greater than 150 m2, installation of an additional detector in some
other suitable place is required, see Fig.2.
Fig 1
1. kitchen,
2. living room,
3. – 6. bedrooms
/
basic coverage
recommended
coverage
Fig 2
the room though (always keep at least a 0.5 m distance from the corner)
see Fig 4. There is an insufficient circulation of air in the corners.
Installation on sloping ceilings
If the ceiling is not suitable for mounting on a level surface (e.g. a
room under a roof ridge), the detector can be installed as in Fig. 5
Fig 1
center of the room, best location acceptable location
Fig 2
Walls, partitions, barriers and lattice ceilings
The JA-82ST detector must not be installed closer than 0.5 m
from any wall or partition. A narrow space with a width of less than 1.2
m requires the detector to be placed at a distance of at least one third of
its width away. If a room is separated into sections with furniture, racks or
semi partition walls, which do not reach the ceiling, the space is
considered to be fully separated if the gap between the top of the
separating wall and the ceiling does not exceed 0.3 m. A free space
of at least 0.5 m is required under and around the detector. Any
irregularities of the ceiling (e.g. girders) exceeding 5 % of the ceiling
height shall be considered a wall and the above mentioned limitations
shall apply.
Ventilation and air circulation
The detectors must not be installed directly by ventilation or air
conditioning vents, etc… If the air is supplied through a perforated ceiling,
there must be no perforation within a radius of 0.6 m of the detector.
Avoid installing the detector in the following locations:
• Places with poor air circulation (niches, corners, apexes of
A-shaped roofs, etc.)
• Places exposed to dust, cigarette smoke or steam
• Places with over-intense air circulation (close to ventilators, heat
sources, air conditioning outlets, etc.)
• In kitchens and other cooking places (because steam, smoke or oily
fumes can reduce detector sensitivity, thus cause false alarms and
detection faults).
• Within a 1 m radius of fluorescent tubes or energy-saving light bulbs
(electrical interference may negatively affect the detector’s radio
communication)
• In areas with lots of small insects
Please note: The most false alarms are caused by
improper detector location.
See CEN/TS 54-14 standard for detailed installation guidelines.
Installation
Abide by the procedures recommended in the previous paragraphs.
Fig 3
In buildings and family houses with multiple floors, detectors should be
installed above stairwells. It is recommended to place additional detectors in
rooms where people sleep. See fig 3.
Installation on level ceilings
must not be recessed into the ceiling due to the possible existence of a
cool air layer on the ceiling. Never place the detector in the corner of
The JA-82ST wireless combined smoke and heat detector MZZ57307
Place the detector in the center of the room if possible. The detector
Fig 3: 1– detector cover opening; 2 – detector cover closing; 3 – optical status
signaling; 4 – arrow showing where to insert the detector; 5 – enrollment code;
1. Open the detector cover, by turning it anti-clockwise (1)
2. Attach the removed plastic base to the desired place with screws
3. Set the configuration terminals (6) according to the table below.
4. Proceed according to the control panel installation manual. Basic
procedure:
a. Switch the control panel to the Service mode and enter the
b. When you insert all batteries into the detector, the enrollment code
6 – configuration terminals; 7 – battery holders
enrollment mode by pressing 1.
is sent to the system – its sending is confirmed with a short flash of
the LED indicator (3).
c. The control panel confirms the enrollment with a flashing of the “A“
ON
2
OFF
OFF
3
OFF 2 OFF
2
ON
3
ON 3 OFF
ON
OFF
Smoke and heat (both
time )
3
ON
ON
OFF
the relevant Union harmonisation legislation: Directives No: 2014/53/EU, 2014/35/EU,
conformity assessment can be found at
LED on the system keypad at the corresponding position.
d. Exit the Enrollment mode by pressing #.
5. Insert the detector into the plastic base. The detector can be inserted into
the plastic base only in one position, which is marked with arrows (4) on
both plastic parts, provided that all three batteries are inserted. Close the
detector cover by turning it clockwise (2). When the detector is fully
secured to the base, a control LED lights up (3), which indicates an
automatic detector test. During this period of time, the detector doesn’t
detect anything. The test ends when the LED shuts down (3), the detector
becomes fully operational. A possible detector fault may be indicated, see
the Fault indication chapter.
Note: The detector can also be enrolled into the system by entering its
serial number (5) in the O-Link program. (Enter the last 8 digits under the
bar code).
Detector setting
The detector properties can be set in the Detectors window in the
O-Link program and with the configuration terminals.
You can choose a type of reaction, to which the system will react upon
the detector’s activation, in the Reaction option in the Detectors tab.
The terminals in the detector can set other options:
1
Memory disabled
Memory enabled
Smoke only (EN 54-
7), (not heat)
2 ON
4
Smoke(EN 54-7) or
heat (EN 54-5)
Heat only (EN 54-5)
(not smoke)
conditions at the same
Instant alarm
Fire alarm
Jumper 1 MEM - Signaling the alarm memory. The signaling LED remains
active for 24 hours after the reason for the alarm ceases to exist.
Jumper 2 and 3 TEMP and SMOKE - The combination of these
configuration jumpers defines how the detector will react to smoke or heat.
Jumper 4 INS jumper sets the reaction of the system when activated:
• FIRE = alarm is triggered no matter if the system is set or unset
• INST = alarm is triggered only when the system is set. This is
used in places where we usually expect smoke to appear
(fireplaces, cigarettes…). Warning – when unset, the system
doesn’t monitor for a fire hazard
The jumper only has an effect if the detector has a natural reaction
assigned to its address in the Oasis control panel. It also has no effect
when used with a UC-8x or AC-8x receiver.
Warning: This device cannot be considered a fire detector when it’s
configured to the INST reaction. The control panel signals an alarm only
when it’s set. The detector signals an alarm with a quickly flashing red
LED (approx.8 times/s) regardless of the control panel status.
Fire alarm
Optical detector: When smoke enters the detector, an alarm is triggered,
and it is signaled with a rapidly flashing red LED light (approx. 8 times per
second). The indication lasts until the room is ventilated (thus also ventilating
the detector’s detection chamber).
Heat detector: When the temperature rises above a set limit, an alarm is
triggered, and it is signaled with a rapidly flashing red LED (approx. 8 times
per second). The indication lasts until the temperature drops (e.g. when the
room is ventilated).
Alarm memory: If enabled, LED alarm indication continues flashing
slowl y (approx. 4 times per second) for a further 24 hours after the alarm
stops. The indication can be terminated by opening the detector cover by
turning it anti-clockwise and activating the tamper sensor.
WARNING! The control panel must be switched to Service or Maintenance
mode otherwise a Tamper alarm will be triggered.
Tamper alarm: When the detector cover is opened, the detector sends a
tamper signal, unless the control panel is in Service or Maintenance mode.
Detector testing and maintenance
The functionality of the optical part of the detector can be tested with a test
spray for smoke detectors. Functionality of the heat sensor can be tested with
a hairdryer. In case the detector is configured to both conditions, it’s
necessary to conduct both spray and hairdryer tests at the same time. The
test should be carried out once in 30 days. The detector’s cover should be
cleaned regularly from cobwebs and dust. No additional maintenance is
necessary.
Warning: never test the detector with fire inside a building.
Battery replacement
The system sends a report automatically when the battery is low. Optical
indication then flashes briefly once every 30 seconds. Remember to switch
the system to Service mode before changing the batteries (otherwise a
tamper alarm will be triggered). It is always essential to replace all three
batteries. Use the same type and the same brand for all of them. Wait for 30
seconds in order to let the detector’s circuitry discharge before inserting new
batteries.
Fault indication
The detector checks its functionality. When a fault is detected, LED
indication immediately flashed 3 times and then briefly 3 times every 30
seconds (a failure of the automatic functionality test is signaled the same way,
see the Installation chapter). The error found may be caused by a fault of the
detection chamber, the temperature of the environment being out of the
operating temperature range or other faults of the detector.
An operating temperature range fault will disappear the moment the
temperature of the environment turns back to normal.
Other faults found are indicated as a fault even after their cause has gone.
The fault indication can be stopped by the functionality test. The functionality
test is triggered by opening the detector cover (fig 6-1), removing the lower
plastic part and putting it back (fig 6-2). If this test results in a fault, send the
detector to the repair service.
WARNING! The control panel must be switched to Service mode otherwise
a Tamper alarm will be triggered
The detector will alert you in case of low batteries by an LED flashing briefly
once every 30 seconds.
Technical specifications
Power 3 x alkaline battery type LR6 (AA) 1.5 V
Warning: Batteries are not included
Typical lifetime approx. 3 years
Communication frequency 868.5 MHz, OASiS protocol
Communication range approx. 300 m (unrestricted area)
Dimensions diameter 126 mm, height 50 mm
Weight 140 g (without batteries)
Smoke detection optical light scattering
Smoke detector sensitivity m = 0.11 - 0.13 dB/m according to EN 54-7
Heat detection class A2 according to EN 54-5
Alarm temperature +60 °C to +70 °C
Operating temperature range -10 °C to +80 °C
Complies with EN 54-5, EN 54-7, EN 54-25,
Also complies with ETSI EN 300220, EN 50130-4
EN 55022, EN 60950-1
Can be operated according to ERC REC 70-03
15 1293-CPD-0250
JABLOTRON ALARMS a.s. hereby declares that the JA-82ST is in a compliance with
2014/30/EU, 2011/65/EU. The original of the
www.jablotron.com - Section Downloads.
Note: Although this product does not contain any harmful materials
we suggest you return the product to the dealer or directly to the
producer after use.
The JA-82ST wireless combined smoke and heat detector MZZ57307
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