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2.5 Locations to avoid
DON’T place Smoke, Heat or Multi-Sensor Fire Alarms in any of the following areas:
• Bathrooms, shower rooms or other rooms where the Alarm may be triggered by steam, condensation.
• Places where the normal temperature can exceed 40°C or be below -10°C (e.g. furnace rooms,
directly above ovens or kettles etc.) as the heat / steam could cause nuisance alarms.
• Near a decorative object, door, light fitting, window moulding etc., that may prevent heat or smoke
from entering the Alarm.
• Surfaces that are normally warmer or colder than the rest of the room (e.g. attic hatches).
Temperature differences might stop heat or smoke from reaching the Alarm.
• Next to or directly above heaters or air conditioning vents, windows, wall vents etc. where air
draughts can change the direction of airflow and cause rapid temperature fluctuations.
• In very high or awkward areas (e.g. over stairwells) where it may be difficult to reach the Alarm (for
testing, hushing etc.).
• In or near very dusty or dirty areas as dust build-up on the optical smoke sensor can impair
performance. It can block the insect screen mesh and prevent smoke from entering the sensor.
Dust build up can also increase the response time of the heat sensor.
• In insect infested areas. Small insects getting into the optical smoke sensor can cause intermittent
false alarms. Insects and contamination on the heat sensor can increase its response time.
• In a damp or humid area.
Do not locate Heat Alarms directly above a sink or cooker – Keep at least 1 m horizontal distance
between these items and the Alarm.
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