Mounting Instructions - Honeywell FS20X Series User Manual

FS20X Fire and Flame Detectors

Mounting Instructions

Consider the following guidelines when selecting a detector location:
1. Avoid areas containing radiant energy sources (e.g., radiant heaters, high
intensity lamps, flare stacks, etc.) that would be near the detector's field of view.
2. Install the detector with the base horizontal. The view angle in this direction is 90°
horizontal as shown in the illustration. (The vertical angle is 80°, 45° below the
center line and 35° above it).
Figure 6. FS20X horizontal field of view
To comply with the requirements of FM3260, the maximum field of view (FoV)
is the angle at which the device can detect a flame at 50% of the maximum
specified distance. Similarly, to comply with the requirements of EN54-10:2002,
the maximum field of view (FoV) is the angle at which the device can detect a
flame at 70% of the maximum specified distance. To comply with the directional
dependence requirements of EN 54-10:2002, an angle of ±40° (80°) from 0°
(where 0° is the orientation of the detector in the same axes as the flame source)
must not be exceeded.
Model SM4 is a 316 stainless steel swivel mount designed for the FS20X
enclosure. The adapter plate (with the two screw holes) is attached to the base
of the detector (see
secured to a solid surface. Angle adjustments are in 10° increments along either
axis. For single-axis adjustments, the center section need not be installed. Do not
mount the detector facing horizontally or above the horizon. Use at least a 30°
downward angle with the swivel mount. This is especially critical outdoors.
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Figure 7). The mounting plate (four screw holes), can be