SECTION 4 – SYSTEM PLANNING
PAGE 4-6 REV. 0 2014-MAY-02
Detection Circuit Cable (Red Connectors) (Continued)
LINEAR DETECTOR (Continued)
9. Keep the detector as far away as possible from equip
-
ment electric cables, particularly power cables to and from
generators and electric motors.
FIGURE 4-3
LINEAR DETECTOR INSTALLATION
009194
SPOT THERMAL DETECTOR SELECTION AND PLACE
-
MENT
Use spot thermal detectors to meet single-point detection
requirements.
Note: When using spot thermal detectors, plan to locate a
minimum of two (2) detectors in each hazard area. Large
hazard areas will require additional detectors.
1. Select according to temperature range relative to hazard
temperature (refer to table).
Rated
Maximum
Operating Hazard
Temperature
Temperature
Detector
°F (°C)
°F (°C)
Color
Part No.
250
(121)
210
(99)
Blue
438280
350 (177) 256 (125)
Red
438281
2. Mount using provided bracket and heat shield on a flat
surface that will properly support the detector during all
equipment operating and environmental conditions (e.g.,
shock and vibration).
3. Connect directly to Detection Circuit Cable or connect to
Linear Detector assemblies.
4. Spot thermal detectors may be run in a branch line
from main detection circuit trunk. A branch terminator is
required when installed on a branch line. See Figure 4-4.
CAUTION
Do not use an EOL Device at the end of a branch line. The
EOL Device will cause incomplete detection circuit super
-
vision and the system will not function properly.
FIGURE 4-4
SPOT THERMAL DETECTOR BRANCH INSTALLATION
009295
5. Install an EOL Device (Part No. 439396) at the end of the
main detection circuit trunk. See Figure 4-5.
FIGURE 4-5
SPOT THERMAL DETECTOR MAIN TRUNK INSTALLATION
009296
Review complete plan layout for the following INCORRECT
INSTALLATIONS and adjust as needed.
CHECKFIRE 210
Detection and Actuation System
BEND RADIUS
NOT LESS THAN
2.5 IN. (64 mm)
MAIN DETECTION
CIRCUIT
EOL
DEVICE
BRANCH LINE
MAIN TRUNK
BRANCH
TERMINATOR
MAIN TRUNK
EOL DEVICE
