Simplex 4098-9687, Руководство по установке

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The 4098-9687 Stand Alone Duct Detector should be installed in a location of
relatively nonturbulent air flow and within the intended operating velocity range
of 300-4000 feet-per-minute (91 to 1220 M/min.).
Simplex recommends measurements of air flow and examination of engineering
specifications that define expected duct air velocities under all conditions. This
is done to determine if a location is suitable for duct detector operation. An
Alnor Instrument Co. (Chicago) Model 6000P Velometer or equivalent (not
supplied) may be used to check the duct air velocity.
1. It is recommended to locate duct detectors a minimum of six duct widths
downstream from bends or inlets. Such locations ensure that air flow is non-
turbulent and that smoke is properly mixed with air in the duct for maximum
detector efficiency. See Figures 5 and 6.
Note: Installation of a duct detector/sensor to a round duct is the same as
shown in Figures 5 and 6 as long as the round duct is 18 inches or
larger (45.7 cm) in diameter.
6 DUCT WIDTHS
MINIMUM
BEND OR OTHER
OBSTRUCTION
Figure 5. Duct Detector Placement - Location of Bends or Inlets
6 DUCT WIDTHS
MINIMUM
RETURN AIR
INLET
Figure 6. Duct Detector Placement - Location of Air Return Inlet
2. Locate duct housings so that dampers do not restrict air flow at the detector
location. See Figure 7.
Continued on next page
Installation
Pre-Installation Routines
Rules to Follow
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