The suitable LOCATION for your DETECTOR


The gas detector should be installed in the room where a gas leak is most likely to occur. This may be the kitchen because of the presence of a gas cooker and other gas appliances. The gas escapes, lighter than the air, they tend to rise and fill all the volume above the level of the escape. Also several factors may modify this behavior, such as heat sources and ventilation. In general the concentration above the level of an escape will be equal to or greater than the concentration below. The gas detector should be installed above the level of a possible gas escape and near the ceiling, typically 30 cm from it, in a place where air movements are not impeded by furniture and furnishings.

The design and layout of domestic premises and the number, type and position of carbon monoxide sources vary widely. However, general guidance is given on where and where not to locate the detector in order to minimize the risk of misleading indications.

It is not possible to give specific guidance on the exact location of a detector which suits all types of room and their usage. The following points should be taken into consideration when determining an optimum location for any appropriate situation. It should be possible to view all the light indicators when in the vecinity of the chosen location for the detector. If there is a partition in a room, the detector should be located on the same side of the partition as the potential source.

The detectors in rooms with sloped ceilings should be located at the highest side of the room. Detectors located in sleeping rooms and in rooms remote from the fuel-burning appliance should be located relatively close to the breathing zone of the occupants. If the detector is located on the wall:

– it should be located close to the ceiling;

– it should be located at a height greater than the height of any door or window.

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The detector should not be installed:

– in an enclosed space (for example in a cupboard or behind a curtain);

– where it can be obstructed (for example by furniture);

– directly above a sink;

– next to a door or window;

– next to an extractor fan;

– next to an air vent or other similar ventilation openings;

– in an area where the temperature may drop below -10°C or exceed +40°C;

– where dirt and dust may block the sensor;

– in a damp or humid location;

– in the immediate vicinity of the cooking appliance.

The detector should not be installed above or next to gas appliances because small gas releases may occur at start up and they may generate unwanted alarms. It should be noticed that installation near cookers may lead to alarms produced by cooking vapors and not gas leaks. It should also to be noticed that contamination by grease may impede the  correct operation of the apparatus.

The detector should not be painted during the cleaning, decorating or painting activities.

In order to avoid situations in which the safety of the apparatus could be affected on short and long term, the detector should not be installed in areas where emissions of the paint solvents can appear, or near the heating systems, stoves or fireplaces, or near the exhausted gases.

Vapors of cleaning liquid gases, varnishes, paints, vapors from the kitchen activities can affect the detector operating and can cause false alarms and malfunctions of the detector.

Avoid the exposure of the detector in humid environments or subjecting it to the shocks (e.g. the cleaning operations in the house).



The detector can be installed as a wall or ceiling mounted unit. A wall mounted detector should be installed on the wall at least 15 cm from the ceiling, but at a height greater than the height of any door or window. Alternatively, you can install the detector on the ceiling at least 30 cm from any wall. Any other position than this, it will be in “dead air” space and carbon monoxide may not reach the sensor. The detector should be at a horisontal distance of between 1 m and 3 m from the potential source.

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The placement recommendations are intended to keep these detectors at a reasonable distance from a fuel-burning source, and thus reduce “unwanted” alarms. Unwanted alarms can occur if a detector is placed directly next to a fuel-burning source.

Ventilate these areas as much as possible. If you must install the detector near a cooking or heating appliance, install at least 1 m from appliance.

WARNING! The detector is not a smoke detector. Please install the proper detectors to detect smoke. It will only indicate the presence of methane gas or CO gas at the sensor. Methane gas and carbon monoxide gas may be present in other areas.

WARNING! Do not cover the detector with the curtain.

According to the EN 50244 and EN 50292 standards, ideally, a detector should be installed in every room containing a fuel burning appliance. For added protection, install additional detectors in remote rooms, in which the occupants spend considerable time whilst awake and from which they may not be able to hear an alarm from detector in another part of the premises, and in every sleeping room.

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Vehicle exhaust can contain some carbon monoxide. These levels are higher when the engine is first started. Within hours of starting a vehicle and backing it out of the garage, the CO levels present over time can activate the alarm. In the kitchen, some gas appliances can emit a short burst of CO upon start-up. This is normal. If your detector is installed too close to these appliances, it may alarm often and become a nuisance. The user should be aware that high concentrations of tobacco smoke may trigger alarms.

Generally, install detectors:

  • In or near bedrooms and living areas or wherever you suspect a CO exposure is likely.
  • On each level of a multi-level home. Improper location can affect the sensitive electronic components in this detector.

WARNING! The installation of the detector in an area where it is not recommended to be installed, can affect sensor operation.



Ideally, a detector should be installed in every room containing a fuel burning appliance. Additional detectors may be installed to ensure that adequate warning is given for occupants in other rooms, by locating detectors in:

– remote rooms in which the occupants spend considerable time whilst awake and from which they may not be able to hear an alarm from the detector in another part of the premises,

– every sleeping room.

However, if there is a fuel burning appliance in more than one room and the number of detectors are limited, the following points should be considered when deciding where best to put the apparatus:

– locate the detector in a room containing a flueless or open-flued appliance

– locate detector in a room where the occupants spend most time.

If the domestic premises is a bedsit (a single room serving as both sitting and bedroom) then the detector should be put as far from the cooking appliances as possible but near to where the person sleeps.

If the appliance is in a room not normally used (for example a boiler room), the detector should be put just outside the room so that the alarm may be heard more easily. Alternatively, a remote alarm siren may be connected to a type A apparatus located in a room containing a fuel-burning appliance.


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