Bellman & Symfon BE1281 Manuel De L'utilisateur page 7

Figure 3. Additionally, mount the unit at least 305mm (12") from any light fitting or
decorative object which might prevent smoke entering the smoke alarm.
Wall mounting
If ceiling mounting is impractical, smoke alarms may be mounted on a wall, provided that:
a) The top of the detection element is between 150mm (6") and 305mm (12") below the ceiling;
b) The bottom of the detection element is above the level of any door openings;
Wall mounting should only be considered where close spaced beams or similar obstruc-
tions may preclude ceiling mounting. It is considered to be the responsibility of the
installer/client to determine if the presence of asbestos in the ceiling material would
make ceiling mounting 'impractical' .
On a sloping ceiling
With a sloping or peaked ceiling, install a smoke alarm within 610mm (24") of the peak
(measured vertically). If this height is less than 610mm (24"), the ceiling is regarded as
being flat, see Figure 4.
Smoke alarms
<610mm (24") from apex
Place in central location and not
Figure 3
within 305mm (12") of any corner
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Apex
Smoke alarms
Dead air
space <610mm (24")
x
Figure 4
Locations to avoid, in accordance with CAN/ULC-S553
DON'T place smoke alarms in any of the following areas:
 Bathrooms, kitchens, shower rooms, garages or other rooms where the smoke alarm
may be triggered by steam, condensation, normal smoke or fumes. Keep at least 6
meters (20ft) away from sources of normal smoke/fumes.
 Locate away from very dusty or dirty areas as dust build-up in the chamber can im-
pair performance. It can also block the insect screen mesh and prevent smoke from
entering the smoke detector chamber.
 Do not locate in insect infested areas. Small insects getting into the smoke detector
chamber can cause intermittent alarms.
 Places where the normal temperature can exceed 100°F (38°C) or be below 32°F (0°C)
(e.g. attics, furnace rooms, directly above ovens or kettles etc.) as the steam could
cause nuisance alarms.
 Near a decorative object, door, light fitting, window moulding etc., that may prevent
smoke from entering the smoke alarm.
 Surfaces that are normally warmer or colder than the rest of the room (e.g. attic
hatches). Temperature differences might stop smoke from reaching the unit.
 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 (e.g. over stairwells) where it may be difficult to reach
the smoke alarm (for testing, hushing or battery replacement).
x
 Locate the unit at least 1 meter (39") from dimmer controlled lights and wiring as
some dimmers can cause interference.
 Locate unit at least 1.5 meters (59") and route wiring at least 1 meter away from
fluorescent light fittings as electrical "noise" and/or flickering may affect the unit.
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