NEXA 101LC Optical Smoke Alarm for Wireless Connection Instruction Manual

Model: Nexa-101LC
OPTICAL SMOKE ALARM FOR WIRELESS CONNECTION

This instruction leaflet contains important information about the correct installation and operation of your smoke alarm. Read the whole leaflet carefully before starting the installation and keep it for future reference.

NB
Lithium batteries must not be used with this model

• Elevated sensitivity and stability
• LED-diode indicates normal operation
• Low-battery signal
• Suitable for serial connection with up to 6 smoke alarms
• Suitable for apartments, terraced houses, and small detached homes

TECHNICAL DATA

IMPORTANT

• The radio range may vary depending on the placement, the design of the building, and the construction materials used.
• Never remove or disconnect the battery to interrupt a false alarm, as this will result in the smoke alarm losing its key functions. Open a window or ventilate the area around the smoke alarm to stop the alarm, and/or press the Pause button.
• The smoke alarm is intended for use in a single residential building. In multi-residence buildings, each residence must be fitted with its own smoke alarm.
• This smoke alarm is not suitable for use in buildings that are not residences. The smoke alarm is not a replacement for a comprehensive alarm system as required by law or the fire authorities.
• The smoke alarm detects combustion particles in the air (smoke). It does not react to flames or gas.
• The smoke alarm is designed to emit an alarm signal if a fire is developing.
• The smoke alarm should be tested every month and replaced every ten years.

POSITIONING THE SMOKE ALARM

For the smoke alarm to provide an early warning, it has to be installed in the location where the fire starts. Therefore, Nexa recommends that you install smoke alarms in each room and on all floors.

Single-level home: To achieve minimum protection, position the alarm in the entrance hall between the living areas (including the kitchen) and the sleeping areas. Position it as close as possible to the living areas, and make sure the alarm can be heard by anyone in the bedrooms. See Figure 1, for example:

FIGURE 1. Single-level home

Multi-story home: To achieve minimum protection, position, and alarm in the stairwell (at ground level) and another alarm above the landing on the top floor, as well as an alarm on the ceiling in the basement at the foot of the stairs. This covers the basement level, but not crawl spaces and unfurnished attics. See the example in Figure 2.

FIGURE 2. Multi-story home

Ceiling installation

Hot smoke rises and spreads, so installing your smoke alarm in a central location on the ceiling is recommended. Avoid areas where air does not circulate, e.g. corners. Also, keep it away from objects that may prevent the free flow of air. Position the device at least 30 cm from light fittings or interior fittings that may prevent smoke/heat from reaching the detector. Position it at least 1 meter away from the wall. See Figure 3A.

LOCATION ON CEILING AND WALL

Wall mounting, if ceiling mounting is not possible
Avoid installing the device a long way into a corner.
Position the upper edge of the smoke alarm at least 15 cm and no more than 30 cm away from the ceiling. See Figure 3A.

Sloping ceilings
In the case of sloping surfaces or ceilings that move up towards a ridge, the detector must be installed 90 cm from the highest point, measured horizontally, because still air under the ridge may prevent smoke from reaching the device. See Figure 3B.

NOTE: There must be an alarm in every room (except the kitchen, bathroom, and garage) to provide recommended/ maximum protection. DO NOT POSITION AN ALARM IN THE KITCHEN or BATHROOM as cooking smells or steam may activate the alarm. DO NOT POSITION AN ALARM IN THE GARAGE as there is a risk of it being triggered by exhaust fumes.

INSTALLATION

1. Remove the base plate from the rear of the smoke alarm by turning it anti-clockwise.
2. Insert one 9 V battery and three AA/LR6 batteries. Make sure to position the poles (+/-) correctly.
3. Test and program the smoke alarm, see the sections entitled TESTING and PROGRAMMING.
4. Install the base plate in an appropriate place on the ceiling. Position your smoke alarm with care.
5. Place the smoke alarm on the base plate and turn it clockwise until it clicks into position.
6. Press the Test button to check that the smoke alarm is working correctly.

NB: The smoke alarm is fitted with a safety switch lock (1.5 V AA batteries) and a safety pin (9 V battery) to ensure that it cannot be installed without batteries. Fold the safety switch lockdown and insert the batteries.

TESTING

TESTING Test your smoke alarm by pressing the Test button and holding it in for around 1 second. The smoke alarm will respond by emitting an alarm signal for a few
seconds.

• Test both before and after installation to be sure that the alarm is functioning correctly.
• Only use the Test button to test the alarm. Never use an open flame, as this may disrupt the alarm operation.
• Test your smoke alarms regularly, once a month.

Testing connected: It can take up to 60 seconds for all connected smoke alarms to respond/emit an alarm. KEEP THE TEST BUTTON DEPRESSED until all smoke alarms have emitted an alarm.

PROGRAMMING

Nexa-101LC units are fitted with transmitters and receivers in order to be able to communicate with each other. For this communication to function, the smoke alarms have to be programmed to link up with each other.
Select one of the alarms as a master unit and mark it with an “M” on the rear so that you can identify it again later on if need be. During the programming process, the master unit transmits a radio code to the other alarms to link them together.

1. Press the LEARN button on the master unit twice; the LED indicator lights up green. The master unit is now in programming mode and ready to send a radio code to the other alarms.
2. Press the LEARN button on the slave unit; the LED indicator lights up red. The slave unit will remain in learning mode for approx. 15 seconds, after which the LED indicator will switch off.
3. Return to the master unit and depress the TEST button for a few seconds. The slave unit will now register the code and start to beep.
4. Repeat steps 2 and 3 for all slave units that are to be connected in the same system.

DELETE PROGRAMMING (reset)

1. Press the LEARN button twice on the smoke alarm you wish to reset; the LED lights up green.
2. Briefly press the TEST button; both LED indicators will flash red once to confirm that the smoke alarm has been reset.

NB: A number of factors can cause disruption to wireless communication. You should therefore test the smoke alarms every week to check that communication between the units is functioning correctly.

OPERATION

During normal operation, the smoke alarm light diode flashes every 40 seconds. This indicates that the batteries and the unit are functioning correctly. If the alarm detects smoke, it will emit a loud, pulsating noise and the red light diode will light up with varying intensity until the smoke has been dispersed.

every 43 seconds
Replace the battery, 4.5 V| Flashes once every 60 seconds| Short audio signal every 60 seconds

REPLACING THE BATTERY

How often you need to replace the batteries depends on the type of battery. However, it is a good idea to replace batteries regularly, once a year, and ideally on a set date.

1. Turn the smoke alarm anti-clockwise to release it from the base plate.
2. Remove the old batteries.
3. Insert new batteries. Check that the poles (+/-) are positioned correctly and that the safety switch lock is folded down.
4. Place the smoke alarm on the base plate and turn it clockwise until it clicks into position
5. Press the Test button to test the smoke alarm. The smoke alarms will maintain their connection as long as they have not been left without a battery for several days.

COMMON CAUSES OF FALSE ALARMS AND HOW TO AVOID THEM

A smoke alarm detects and reacts to smoke particles in the air. The smoke particles trigger the alarm’s audio signal. However, this sensitivity does mean that the smoke alarm also reacts to dust particles, moisture, and other particles in the form of pollen, insects, etc. These are the most common causes of false alarms.

SMOKE ALARM WARRANTY

This smoke alarm comes with a limited 3-year warranty against manufacturing defects. (Valid from the date of purchase). The batteries are not covered by the warranty. The warranty liability is limited to the value of a corresponding smoke alarm. Defective smoke alarms must be returned to the dealer together with a description of the problem. Approved complaints will result in replacement with a new smoke alarm of the same or a corresponding type. When submitting a complaint, you must present a receipt proving the date of purchase.

CLEANING AND MAINTENANCE

The smoke alarm should be cleaned regularly, at least twice a year. To clean your smoke alarm, vacuum the exterior along the opening into the optical chamber to remove any dust and dirt.
IMPORTANT: Do not attempt to open the cover to clean the inside of the smoke alarm. Removing the cover will invalidate the warranty.

SOURCE OF ERROR|

MEASURE

---|---
Steam and moisture. False alarms can be triggered if the smoke alarm is positioned too close to bathrooms or laundry rooms, or in other places where the ambient humidity is high.| Position the smoke alarm at least 2 meters from bathrooms, laundry rooms, and other places where the ambient humidity is high.
Dust and dirt. As the air flows freely through the detection chamber, the smoke alarm will attract a fair amount of dust and pollen particles. This can trigger false alarms. It can also make the smoke alarm more sensitive, which can likewise result in false alarms.| Vacuum clean the smoke alarm regularly – use a plastic mouthpiece so as not to damage the electronic components. Make sure not to position the smoke alarm in highly dusty or dirty places. Place a “cap” over the smoke alarm or remove it completely if you are carrying out renovation work in your home.
Draughts, dust, and air flows. False alarms can be caused by positioning the smoke alarm too close to doors, windows, ventilation systems, fans, air ducts, heat pumps, and the like. This can cause dust particles to whirl up and into the detection chamber.| Do not install smoke in draughty places or close to windows and doors, ventilation units, fans, air ducts, heat pumps, and the like. Find a more appropriate place for the smoke alarm, farther away from draughts and air flows.
Temperature variations can cause condensation to form in the detection chamber. For example, if the smoke alarm is placed in a room where windows are opened for ventilation in the winter, close to exits, balcony doors, or other places where the temperature alternates between hot and cold.| Avoid installing smoke alarms in rooms where the temperature changes rapidly, or close to doors and windows that are often opened and closed. Move the smoke alarm to a place with a more even, stable temperature.
Inappropriate placement. Incorrect placement in an unstable indoor environment, draughts, close to electrical units (EMC), and light fittings can trigger false alarms.| Position the smoke alarm at least 5 meters from open cooking ranges, chimneys, and other sources of heat. 2 meters from ventilation ducts, heat pumps, and airconditioning units.1 meter from lights and fluorescent lights.

RECYCLING

• The unit principally consists of recyclable materials.
• Do not dispose of the packaging, the unit, or the contents of the packaging as household waste; follow the applicable regulations instead.
• In compliance with EU Directive 2002/96/CE relating to waste from electrical and electronic equipment (WEEE), this product must be recycled.
• For additional information, call the dealer or local authority responsible for waste management

2831
2831-CPR-F1068
NEXA20190001
EN14604:2005/AC:2008
Smoke alarm for household use

Manufacturer:
Nexa Trading AB, Sweden

The Declaration of Performance (DoP) is published on our website – www.nexa.se

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