Page 2 Copyright © 1995-97 Detection Systems, Inc. DS1520/30 Installation Instructions
4.1.2 Range Guidelines for Safes and ATMs
A single detector may be used to protect a safe or ATM if no one wall or side
of the safe or ATM exceeds 4 feet (1.2m) across or high. Otherwise, use the
chart below to determine the maximum detection radius [listed in feet
(meters)] which will provide sufficient coverage of the entire unit to be pro-
tected. The ranges shown are guidelines only -- it is important that the oper-
ation of the detectors be verified by testing after installation.
Sensitivity
Setting
G min (3)
G r ef (2)
DS 1520 Only:
G max (1)
DS 1530 Only:
G max (1)
N/R
N/R
6 ft (1.8m)
4.5 ft (1.4m)
Mounting Location
Body
(exterior)
Body
(interior)
Door
(exterior)
Door
(interior)
N/R
N/R
8.8 ft. (2.7m)
N/R = Not re commend ed
8.8 ft. (2.7m)
8.8 ft. (2.7m)
8.8 ft. (2.7m)
8.8 ft. (2.7m)
8.8 ft. (2.7m)
8.8 ft. (2.7m)
8.8 ft. (2.7m)
4.5 ft ( 1.4 m)
6 ft (1.8m)
G max
G min
1
2
3
4
5
G re f
Range
The unit to be protected must be constructed with a minimum thickness of
1/4 inch steel on the body and 1/2 inch steel on the door. In order to provide
maximum protection, the detector must be mounted as closely as possible
to a door hinge
Scr oo ge McD uck
Range
Scr ooge
M cDu ck
Detection
5.0 Planning the Installation - General Consider-
ations
The detection ranges shown in this guide are intended as guidelines for
ideal installation conditions. Actual detection range may be affected by
situations such as partitions inside the safe and non-continuous surfaces in
the safe’s construction. Typically, one detector is used to protect each safe
door. It is important to test the installation thoroughly.
5.1 Planning Safe and Cabinet Protection
5.1.1 Safe and Document Cabinets - Multiple Detectors
If mounting inside the body, mount a detector on a space which is clear and
easily accessible (e.g. the ceiling). Also mount a detector on the inside of a
door, close to the hinges. It is advisable to also add a magnetic contact to
the door.
If mounting outside the body, mount a detector on a wall at the same height
as the the detector to be mounted on the door. The detector on the door may
be mounted in one of three ways:
1. Mounted fixed, close to the hinge providing a short distance to the junc-
tion box.
2. Mounted on the key-hole protection plate to cover the key-hole. In the
armed position, the lever will cover the key-hole. Connect the lever con-
tact in series with the alarm output relay. This inhibits the arming of the
alarm system if the lever is still in the day position.
3. Mounted with the movable mounting kit. Mount so that the cable pre-
vents opening the door when the detector is in the night position plate.
Place the day position plate on a wall next to the opening side of the
door, or on a wall close to the safe.
The following drawing shows examples of these 3 mounting options.
Mounting Option 1
Mounting Option 2
Mounting Option 3
5.1.2 Safe/Document Cabinet Protection: one detector
If planning to protect a safe or document cabinet with only one detector,
mount the detector between and as close as possible to one of the door
hinges (either on the body or door) as shown in the diagram below. It is
advisable to add a magnetic contact to the door as well (this is required for
a UL Complete Mercantile safe rating).
5.1.3 Filing Cabinets
Normally the lock to the cabinet is located on one side
of an upper drawer. If so, mount the detector on the
side of the cabinet close to the lock.
If high security is required on one drawer in particular,
mount the detector on that drawer. Mount the night po-
sition plate on the drawer and the day position plate on
the side of the cabinet.
