PART 3
EXECUTION
3.1
INSTALLATION
All work shall be installed as shown, and in accordance with NFPA 70 and
NFPA 72, and in accordance with the manufacturer's diagrams and
recommendations, unless otherwise specified. Smoke detectors shall not be
installed until construction is essentially complete and the building has
been thoroughly cleaned.
3.1.1
Power Supply for the System
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NOTE: It is the responsibility of the designer to
ensure that the source of power for the fire alarm
system is shown on the drawings.
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A single dedicated circuit connection for supplying power from a branch
circuit to each building fire alarm system shall be provided. The power
shall be supplied as shown on the drawings. The power supply shall be
equipped with a locking mechanism and marked in red with the words "FIRE
ALARM CIRCUIT CONTROL".
3.1.2
Wiring
Conduit size for wiring shall be in accordance with NFPA 70. Wiring for
the fire alarm system shall not be installed in conduits, junction boxes,
or outlet boxes with conductors of lighting and power systems. Not more
than two conductors shall be installed under any device screw terminal.
The wires under the screw terminal shall be straight when placed under the
terminal then clamped in place under the screw terminal. The wires shall
be broken and not twisted around the terminal. Circuit conductors entering
or leaving any mounting box, outlet box enclosure, or cabinet shall be
connected to screw terminals with each terminal and conductor marked in
accordance with the wiring diagram. Connections and splices shall be made
using screw terminal blocks. The use of wire nut type connectors in the
system is prohibited. Wiring within any control equipment shall be readily
accessible without removing any component parts. The fire alarm equipment
manufacturer's representative shall be present for the connection of wiring
to the control panel.
3.1.3
Control Panel
The control panel and its assorted components shall be mounted so that no
part of the enclosing cabinet is less than 300 mm 12 inches nor more than
2000 mm 78 inches above the finished floor. Manually operable controls
shall be between 900 and 1100 mm 36 and 42 inches above the finished floor.
Panel shall be installed to comply with the requirements of UL 864.
3.1.4
Detectors
Detectors shall be located and installed in accordance with NFPA 72.
Detectors shall be connected into signal line circuits or initiating device
circuits as indicated on the drawings. Detectors shall be at least 300 mm
12 inches from any part of any lighting fixture. Detectors shall be
located at least 900 mm 3 feet from diffusers of air handling systems.
Each detector shall be provided with appropriate mounting hardware as
required by its mounting location. Detectors which mount in open space
SECTION 13850A
Page 28
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