Can smoke detectors be installed vertically?

Can smoke detectors be installed vertically?

Nfpa 72 smoke detectors

Fire Detection is a complex field, however it is much simpler than you might think.  The purpose of this article is to provide those installers who are not yet performing Fire Detection installations with the basic aspects to consider in order to enter the field. We hope it will be useful.

In order to physically identify the focus of the fire within the building, different alarm zones will be established for fire detection, these areas (or zones) will correspond to the zones of the Fire Panel itself. A maximum of 25 fire detectors may be installed in each zone.

The surface area of the detection zones may not exceed 1000 m2 and must be located on a single level or floor. Stairwells, elevator shafts and skylights shall be defined as independent zones.

In order to establish the type of detector, the probable evolution of the fire from its beginning, the height of the premises, the environmental variables and the possible causes of false alarms in the protected areas must be taken into account.

Photoelectric smoke detector

Smoke detectors can be connected to the mains. Some models also incorporate a battery-operated battery so that they do not stop working in the event of a power failure. They are also available wireless. In addition, you should know that carbon monoxide detectors have a chemical that helps the detection process so you should check it as well as the batteries.

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In this article we focus on the location of the detectors for maximum efficiency. The detectors should preferably be installed on the ceiling, in a fixed position, in a place where their performance is efficient, taking into account that smoke always tends to rise. A separation distance of 9 meters (in an unobstructed space between the area to be protected and the detector) can be established between one detector and another.

The detectors must be placed in the center of the ceiling of the room, since it is where smoke and heat are concentrated. Respect a minimum distance of 50 cm between the location of the smoke detector on the ceiling and the wall.

How many smoke detectors should be placed

According to the UNE-23007-14, in table A-2, it is indicated that when the angle of inclination is greater than 30º, we obtain a series of values of maximum surface and distance between detectors but I do not know if this is applicable to install a detector in a completely vertical position?

Could you tell me where it specifies that they can not be installed in vertical position? although it is pure logic, a customer clings to the table A2 of the UNE-23007-14 when the plane of inclination is greater than 30º…

According to the UNE-23007-14, in table A-2, it is indicated that when the angle of inclination is greater than 30º, we obtain a series of values of maximum surface and distance between detectors but I do not know if this is applicable to install a detector in a completely vertical position?

How to install a smoke detector

The location of the detectors (on the ceiling or directly on the lintel) depends, among other things, on the distance between the upper edge of the door and the ceiling, as well as the type of fire protection closure.

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If, for example, the opening width is more than 4 m but less than 8 m, twice as many lintel and ceiling detectors must be installed. The distance between the individual detectors should not exceed 4 m (13 ft).

Heat detectors should be used only in case smoke or dust is produced during the normal working or manufacturing operation process, so that there is a risk of smoke detectors triggering false alarms.

Can smoke detectors be installed vertically?
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