
Model FS24X
™
Fire and Flame Detectors
INSTALLATION GUIDE and OPERATING MANUAL
Fire Sentry Corporation
Document No. 6178-001 - Rev. Q
© Copyright 2011
All Rights Reserved
Page 2
U
Field Selectable Configuration Switches
1. The eight (8) pin DIP switch (SW2) is used
to select the Detector’s Sensitivity and
Relay Options.
2. The ten (10) pin DIP switch (SW1) is used
for:
Selecting a unique digital address
(128 choices).
Factory Use
3. The ten (10) position Rotary switch allows
selection of the analog and digital
communication protocol.
Figure 1-3
FS24X and FS24X-9 Detector Puck, (
rear view
)
1.2
Detector Technical Specifications
1.2.1
Mechanical Specifications
Enclosure Material:
Copper Free Aluminum
316 Stainless Steel
Physical Dimensions:
Assembly 4.35 in. (
110.49 mm
) Height X 4.81 in. (
122.24 mm
) Diameter
Mounting Holes ¼ in. (
6.35 mm
) Diameter, 5.50 in. (
139.70 mm
) Center to Center
Conduit Entries Two (2) ¾ in. NPT or Two (2) 25 mm
Weight:
Aluminum 3 lbs. 11 oz. (
1.7 kg
) approximately
Stainless Steel 7 lbs. 7 oz. (
3.4 kg
) approximately
Enclosure Rating:
IP66 / NEMA 4 / NEMA 4X
Vibration:
Meets or exceeds Mil Spec 810C,
Method 514.2, Curve AW
1.2.2
Electrical Specifications
Input Voltage Range:
18 VDC to 32 VDC
Normal Operation Current:
60 mA (
nominal
)
205 mA (
nominal with heater
P
1
P
)
Maximum Fire Alarm Current:
85 mA (
maximum
)
235 mA (
maximum with heater
P
1
P
)
Relay Contact Rating:
1 Amp @ 24 VDC resistive
Analog Current Output:
0 to 20 mA (
Source or Sink, User Selectable
)
(
400 Ohms Max Load
)
0.0 mA (
<0.6 mA
) = Fault
2.0 mA (
±0.6 mA
) = Dirty Window Lens
4.0 mA (
±0.6 mA
) = Normal, Safe (
no Fault, no Fire
)
20.0 mA (
±0.6 mA
) = Alarm or Verified Fire Alarm
Screw Terminal Wire Sizes:
12 AWG to 22 AWG (
2.50 mm to 0.762 mm
)
Use stranded conductors (
U
not
U
solid core
)
1.2.3
Environmental Specifications
Operating Temperature
Standard: -40° F to +185° F (-40° C to +85° C)
Extended-Temp
P
2
P
: -76° F to +230° F (-60° C to +110° C)
Optional
Operating Humidity Range:
0 to 95% RH,
100% RH condensing for short periods of time