Évaluations - 3, GPA: 4
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Basic Information about your Heat Alarm A Heat Alarm is an early warning device. A system based on interconnected Heat Alarms and Smoke Alarms, can give you and your family valuable extra time to escape. Note: . Install correctly, in the centre of the ceiling if possible. . Test weekly with Test Button. . Replace alkaline battery yearly or when it beeps once a minute. . When the power is first connected the Alarm may sound for 2-3 seconds - this is normal. . A Heat Alarm does not prevent fires. . Plan your escape route. . Proper fire protection requires Smoke Alarms in addition to Heat Alarms with all units interconnected. . If you have any doubt or query about Heat Alarms consult the supplier or your local Fire Brigade. 2. Locating your Heat Alarm The Heat Alarm gives a fire warning when the temperature at the unit reaches 58° C. It is ideal for kitchens, garages, boiler houses and other areas where there are normally high levels of fumes, smoke or dust i.e. places where Smoke Alarms cannot be installed without the risk of excessive nuisance alarms. A Heat Alarm should only be used in a room adjoining an escape route, in conjunction with Smoke Alarms on the escape routes. All the Heat Alarms and Smoke Alarms should be interconnected to ensure the early warning will be heard, particularly by somebody sleeping. A Heat Alarm installed in a closed room will give early warning of fire in that room. A properly designed early warning fire system ensures the alarm is given before the escape routes become blocked with smoke - therefore there must be Smoke Alarms along the escape routes as Heat Alarms would not give sufficient warning. However, a fire in a closed room (e.g. kitchen) adjoining the escape route, can eventually cause the corridor to become smoke-logged due to smoke leaking out from around the door before adequate warning can be given by detectors in the corridor. (Smoke leaking out from a room is often cool and slow moving so it can take a long time to rise to the ceiling, and travel to a detector which could be some distance away). Figure 1 illustrates where Heat Alarms and Smoke Alarms should be located in a typical two storey house. The following gives the recommended spacings to be used to ensure the early detection of fire and that the warning will be heard: 2 Figure 1 Recommended Locations for Interconnected Heat Alarms and Smoke Alarms Heat Alarms Smoke Alarms Heat Alarms Rooms adjoining or on escape routes - kitchens, garages, boiler houses etc. where Smoke Alarms are unsuitable. Install within 5.3m (17 feet) of potential sources of fire. Smoke Alarms 1. Within 7m (23 feet) of doors to rooms where a fire is likely to start. Corridors over 15m (46ft) should have more than one Smoke Alarm. 2. On each storey. 3. Within 3m (10 feet) of bedroom doors - so warning will be heard. 4. All other rooms where a fire could start (except those with cooking/car fumes or condensation). 3. Positioning your Heat Alarm Location must comply with applicable building regulations. (a) Ceiling Mounting Hot smoke rises and spreads out, so the Heat Alarm must be put on the ceiling - preferably in the centre. The sensitive element (in the cylindrical protrusion) must not be less than 25mm (1 inch) or more than 150mm (6 inches) below the ceiling or roof. 3 The air is “dead” and does not move in corners, therefore Heat Alarms must be mounted away from corners. Place the unit at least 30cm (12 inches) from any light fitting or decorative object which might obstruct the heat travelling to the Alarm. Keep at least 15 cm (6 inches) away from walls and corners. (See figure 2). Wall mounting is not recommended for Heat Alarms. If the ceiling has a pitched roof install an Alarm within each apex. (b) Locations to Avoid IDEAL IN CENTRE OF CEILING DEADAIRSPACESNEVERWITHIN15cmOFANYCORNER Figure 2 Don’t place your Heat Alarm in any of the following areas: . Places where extremes of temperature may occur - below 4°C or above 43°C. e.g. attics, furnace rooms etc. Directly above ovens or kettles as the heat/steam could cause nuisance alarms. . Bathrooms, shower rooms or other rooms where the unit may be triggered by steam or condensation. 4 . Near a decorative object, door, light fitting, window molding etc., that may prevent the heat reaching the unit . Surfaces that are normally warmer or colder than the rest of the room (for example attic hatches, uninsulated exterior walls etc). . Next to or directly above heaters or air conditioning vents, windows, wall vents etc. that can change the direction of airflow. . In very high or awkward areas (eg. over stair shafts) where it may be difficult to reach the alarm for testing and battery replacement. . Locate the unit at least 1 metre (3 feet) from dimmer controlled lights and wiring - some dimmers can cause interference. . Locate unit at least 1.5m (5 feet) and route wiring at least 1m (3 feet) away for fluorescent light fittings as electrical “noise” and/or flickering may affect the unit. ....