Potter EVD-1 - Manual (Page 12)

12
EVD-1 • 5401043 • REV M • 9/07
Recommended Detector Locations
Single Detector Applications
All safe applications must have at least one EVD-1 on the body of the safe. When only one detector is required on a safe, mount the detector on
the exterior of the safe on the door hinge side, near the front edge and centered within the height of the safe. (Ideally, mount the detector’s sensor
center point 2 inches in from the front edge of the safe on the centerline of the safe’s height, refer to Figure 9). Figure 4 shows the recommended
detector location of a safe application requiring one detector. Safes with double doors require a minimum of two detectors, even if the dimensions
of the safe conform to the requirements for the use of a single detector.
Two-Detector Applications *
When two detectors are required on a safe, mount the fi rst detector as recommended for a single detector installation. Mount the second detector
on the opposite side of the safe, at the same height and with the same front edge offset as the fi rst detector. Safes with double doors that conform
to the dimensional requirements for the use of one or two detectors should be protected in this fashion. Figure 5 shows the recommended detector
locations of a safe application requiring two detectors. Figure 6 shows the recommended detector location(s) of a safe application with double doors.
Multiple Detector Applications *
When more than two detectors are required on a safe, mount the fi rst two detectors as recommended for a two-detector application. Mount the
remaining detectors on the remaining surfaces, centered and spaced evenly to ensure complete detector coverage. Alternately, mount a detector
centrally on the safe door and the remaining detectors centrally on the remaining surfaces, evenly spaced.
Note: If any recommended detector location is not physically accessible, contact Potter's technical support for assistance.
* The EVD-1 is a stand-alone detector. For applications requiring more than one detector, the EVD-2 may be more appropriate.
Figure 4.
Figure 5.
Figure 6.
Determining the Number of Detectors for A Safe Application
Refer to column one in Table 3 for the type of the safe in the application. In column two fi nd the maximum linear distance from a detector to any
point on the protected surface. This distance is the detector range. Next, refer to column one, (for steel safes), or column two, (for composite
safes), in Table 4. Find the range of distances based upon the detector range that corresponds to the safe in the application. Using the row of this
range of distances, determine the number of detectors from column three, (if safe has a single door), or from column four, (if safe has double
doors). For applications with a larger distance than that shown in Table 4, consult Potter’s technical support for assistance.