Protectowire 2000 FireSystem Manual de usuario descargar pdf (Pagina 25)

The following chart (Figure 27) shows that in a

freezer with an operating temperature of

-40°F (-40°C), and fasteners placed every 5 feet

(1.5m), the minimum sag between each set of

fasteners (as measured from the horizontal fas-

tening plane) should be 1.125 inches (2.8cm).

Tunnels

In vehicular tunnel applications, Protectowire

Linear Heat Detector is typically installed on the

ceiling directly over the roadway as illustrated in

Figures 28 and 28A. The system’s design may be

further enhanced by installing Protectowire in

the cable racks and equipment rooms which

house control and power cables for the tunnel’s

ventilation, communication, and signaling equip-

ment. In cable runs, the Detector may be

installed at each rack level in direct contact with

the cables. Because the Detector is a cable, it will

easily follow tray runs, change levels, and cover

vertical cable risers.

Figure 28

Figure 27

5 ft. (1.5 m)

1 1/8 inch (2.8 cm)

5 ft. (1.5 m)

1 inch (2.5 cm)

/8 inch (2.25 cm)

3/4 inch (1.9 cm)

SAG

MINIMUM

Figure 28A

-40

F (-40

-20

F (-29

-0

F (-18

+20

F (-7

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Protectowire 2000 FireSystem Manual de usuario Pagina 25