Installation Guide

Analog Detectors and Bases Mounting | en 7
Bosch Security Systems, Inc. Installation Guide F.01U.123.589 | 5.0 | 2012.02
3 Mounting
– Follow NFPA-72 guidelines for mounting locations. For commercial and industrial installations, 30 ft. (9 m)
spacing between smoke detectors is recommended.
– The electrical boxes must be large enough to accommodate the number and size of conductors as specified by
the National Electrical Code or the local Authorities Having Jurisdiction (AHJ).
3.1 Mounting the Detector
Figure 3.1 6-inch and 4-inch Mounting Bases
1. Mount the base using the two oblong mounting holes (see Figure 3.1, Position 1).
If you mount the detector with a 6-inch base, first remove the base skirt (2) from the mounting base using a
screwdriver to release the 4 tabs (3).
2. Tighten the base to the mounting surface. Do not over tighten. If you use a 6-inch base, fit the base skirt onto
the mounting base.
3. Turn clockwise until the detector head locks into place and aligns with the semi-circle notch (4).
3.2 Locking and Releasing the Detector
The detector bases are supplied with a snap-off locking bar (X) as part of the base moulding to prevent malicious
removal of the detector. The locking mechanism is selectable and is activated by shifting the U-shaped locking bar
(X) into the position as shown in Figure 3.2.
1. Remove the U-shaped locking bar by breaking it from its holder.
2. Tuck it into the opening next to it by pushing hard.
NOTICE!
Smoke detectors are not to be used with detector guards unless the combination has been
evaluated and found suitable for that purpose.
Position Description
1 Mounting holes
2 Base skirt
3 Release tabs
4 Semicircle notch
1
2
3
3
3
3
1
1
1
4