Kidde Combination Smoke and Carbon Monoxide Alarm KN-OOSM-IB - Manual (Page 11)

Sloped Ceiling Installation:
The following information is from the National Fire Protection
Association and is listed in Fire Code 72.
Install Smoke Alarms on sloped, peaked or cathedral ceilings at,
or within 3 ft (0.9m) of the highest point (measured horizontal-
ly). NFPA 72 states “Smoke alarms in rooms with ceiling slopes
greater than 1 ft to 8 ft (.3 m-2.4 m) horizontally shall be locat-
ed on the high side of the room”.
NFPA 72 states “A row of alarms shall be spaced and located
within 3 ft (0.9 m) of the peak of the ceiling measured horizon-
tally” (see figure 2).
Mobile Homes:
Modern mobile homes have been designed and built to be
energy efficient. Install Smoke/CO alarms as recommended
above (refer to Recommended Installation Instructions and fig-
ure 1). In older mobile homes that are not well insulated,
extreme heat or cold can be transferred from the outside to the
inside through poorly insulated walls and roof. This may cause
a thermal barrier, which can prevent smoke from reaching an
alarm mounted on the ceiling. In such mobile homes install
your Smoke/CO Alarm on an inside wall with the top edge of
the alarm at a minimum of 4 inches (10cm) and a maximum of
12 inches (30.5cm) below the ceiling (see figure 2). If you are
not sure about the insulation in your mobile home, or if you
notice that the outer walls and ceiling are either hot or cold,
install your alarm on an inside wall ONLY!
Installation Instructions
9
FIGURE 2