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EVD-2 • 5401042 • REV L • 03/05
Figure 9. WALL PROTECTION DIAGRAM
TYPICAL UL COMPLETE SAFE INSTALLATIONS
1. Install in accordance with Underwriter Laboratories’ standard UL 681.
2. Install EVD-M and EVD-R detectors in recommended locations at recommended
spacings.
3. Install UL listed, high security contacts on the exterior of the safe or UL listed, ordinary
use contacts on the inside of the safe.
4. Wire detectors and safe door contacts as shown in Figures 4 and 5a.
5. Listed power supply or control unit must provide at least 4 hours of standby power for
mercantile alarms and 72 hours of standby power for bank vault alarms.
TYPICAL UL COMPLETE VAULT INSTALLATIONS
1. Install in accordance with Underwriter Laboratories’ standard UL 681.
2. Install EVD-M and EVD-R detectors on interior walls, ceilings, and floors, spaced as
shown in figure 9. Refer to Table 7 for maximum spacing on various materials.
3. A detector must be installed on the vault door if the net steel thickness is less than
1 1/2 inches.
4. Wire detectors and door contacts as shown in Figures 4 and 5a.
5. Listed power supply or control unit must provide at least 4 hours of standby power for
mercantile alarms and 72 hours of standby power for bank vault alarms.
EVD-2 WALL PROTECTION
Figure 9 shows the rectangular areas of 100% coverage when detectors are installed
adjacent to one another. The detector spacing is the sensor center point distance between
adjacent detectors. The detector spacing is the same as the width of the rectangular area
of 100% coverage. Table 7 lists the dimensions of the rectangular areas of 100% coverage
on continuous surfaces for several materials and sensitivity settings. When a surface
extends around a corner via a solid connection, detector coverage extends into that
surface, but the coverage is reduced to 3/4 of the remaining detector range. All joints,
cracks, and corners dampen structure borne vibrations. Vibration transfer across these
imperfections must be tested to ensure complete coverage within the detector’s range.
Modular constructions require one detector per panel and must be constructed of the
materials listed in Tables 4 and 7.
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