Installation Guide

• For mobile home installation, select locations carefully to avoid thermal barriers

that may form at the ceiling. For more details, see MOBILE HOME INSTALLATION

section.

• When mounting the alarm on the wall, use an inside wall with the top edge of a

maximum of 12” (30.5 cm) below the ceiling.

• Put smoke alarms at both ends of a bedroom hallway or large room if the hallway

or room is more than 30 feet (9.1 m) long.

• Install Smoke Alarms on sloped, peaked or cathedral ceilings at or within 3ft

(0.9m) of the highest point (measured horizontally).

This equipment should be installed in accordance with the National Fire Protection

Association’s 72 (National Fire Protection Association, Batterymarch Park, Quincy, MA 02269).

Mobile Home Installation

Modern mobile homes have been designed and built to be energy efficient. Install

smoke alarms as recommended above. In older mobile homes that are not well insu-

lated compared to present 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 a maximum of 12” (30.5 cm) below the ceiling.

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 compared to the room air temperature,

install the alarm on an inside wall. NFPA 72 (National Fire Protection Association)

requires smoke alarms be installed in each sleeping area.

WARNING: TEST YOUR ALARM OPERATION AFTER MOBILE HOME HAS BEEN IN

STORAGE OR UNOCCUPIED, AND AT LEAST ONCE A WEEK DURING USE.

NFPA 72 states: “Smoke alarms in rooms with ceiling slopes greater than 1 ft in 8 ft

(0.3m in 2.4 m) horizontally shall be located on the high side of the room.” NFPA

72 states: “A row of detectors shall be spaced and located within 3 ft (0.9m) of the

peak of the ceiling measured horizontally.”