•When mounting the alarm on the wall, use an inside wall with the top edge of the alarm at a minimum of 10 cm (4”) and a maximum of 30.5 cm (10”) below the ceiling. (see Figure 1).
•Put smoke alarms at both ends of a bedroom hallway or large room if the hall- way or room is more than 9.1 m (30 feet) long.
•Install Smoke Alarms on sloped, peaked or cathedral ceilings at or within 0.9 m (3 ft) of the highest point (measured horizontally). Smoke alarms in rooms with ceiling slopes greater than .3 m in 2.4 m (1 foot in 8 feet) horizontally shall be located on the high side of the room. A row of detectors shall be spaced and located within 0.9 m (3 ft) of the peak of the ceiling measured horizontally (see Figure 3).
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| 10 cm |
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CEILING |
| (4”) |
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| MINIMUM |
| |
|
| DEAD AIR |
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| SPACE | 10 cm |
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| |
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| (4”) |
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| MINIMUM |
| BEST | NEVER |
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| HERE |
| |
| HERE |
| |
|
|
| |
|
|
| 30.5 cm |
|
|
| (12”) |
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| MAXIMUM |
| ACCEPTABLE |
| |
| HERE |
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| SIDE |
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| WALL |
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| FIGURE 1 |
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| MULTIPLE | |
SINGLE FLOOR PLAN | FLOOR PLAN | ||
BEDROOM KITCHEN | BEDROOM BEDROOM |
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| BEDROOM | HALL BEDROOM |
LIVING ROOM | BEDROOM |
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| LIVING | KITCHEN |
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| ROOM |
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● Smoke Alarms for Minimum Protection |
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| |
● Smoke Alarms for Additional | BASEMENT |
| |
Protection |
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| FIGURE 2 |
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|
| NOT |
| IN THIS |
| AREA |
102 mm | ANYWHERE |
(4”) | IN THIS |
| AREA |
0.9 m | 0.9 m |
(3’) | (3’) |
| NOT |
| IN THIS |
| AREA |
ANYWHERE | 4" |
IN THIS AREA | |
| (102 mm) |
0.9 m | |
(3’) |
|
FIGURE 3
MOBILE HOME INSTALLATION
Modern caravans and mobile homes have been designed and built to be energy efficient. Install smoke alarms as recommended above (see Figures 1 and 2).
In older caravans and mobile homes that are not well insulated compared to pres- ent standards, extreme heat or cold can be transferred from the outside to the inside through poorly insulated walls and roof. This may create a thermal barrier which can prevent the smoke from reaching an alarm mounted on the ceiling. In such units, install the smoke alarm on an inside wall with the top edge of the alarm at a minimum of 10 cm (4”) and a maximum of 30.5 cm (12”) below the ceiling (see Figure 1).
If you are not sure about the insulation in your caravan or mobile home, or if you notice that the outer walls and ceiling are either hot or cold, install the alarm on an inside wall. For minimum protection, install at least one alarm close to the bed- rooms. For additional protection, see SINGLE FLOOR PLAN in Figure 2.