Linear Heat Detection0 pages

LINEAR HEAT DETECTION CABLE
DESCRIPTION
Linear heat detection (LHD) cable is a combination of advanced polymer and digital
technologies that can detect heat anywhere along its entire length.
At the core of LHD is a twisted pair of extremely low resistance (.05 ohm/ft [.164
ohms/m] per twisted pair) tri-metallic conductors, sheathed in new advanced thermal
polymers. These polymers are chemically engineered to break down at specific fixed
temperatures allowing the twisted conductors to make contact and initiate an alarm at
the control panel without any calibration for changes in the ambient temperature. The
distance locating option allows the ability to identify and display the exact location, in
feet or meters from the control panel, where the heat source interacted with the
detection cable.
The polymer used for the protective outer coating of LHD is chemically inert and
UV protected. This allows for cable to be used in a wide variety of installations and
types of hazards.
LHD cable is compatible with control panels by utilizing either addressable monitor
modules on an intelligent system or connected directly into the detection circuit of a
conventional panel which initiates a fire or fault condition to the control panel.
SPECIFICATIONS
Diameter:
Weight:
Bend Radius:
Max. Voltage Rating:
Resistance:
Temperature Ratings:
Min. Temperature Rating:
Sheathing:
1/8” (3 mm)
Nominal 15 lbs./1000 ft. (6.8 kg/305m)
3” (76 mm)
30 VAC, 42 VDC
.05 ohms/ft (.164 ohms/m)
155°F, 172°F, 190°F, 220°F (68°C, 78°C, 88°C, 105°C)
-40°F (-40°C)
PVC - Corrosive and UV resistant lead and cadmium free
Nylon - Bbrasion resistant Rilsan® Nylon
Polypropylene - Chemical resistant
Stainless Steel Braid - Annealed 316
GuildWire - Stainless Steel 316, 20AWG
APPROVALS
• UL
• C-UL-US
• FM
• CSFM
• MEA
FEATURES
• As a contact closure initiating device, Fike approves up to 2,000 ft (609 m) of LHD cable per each Cheetah Xi,
CyberCat intelligent input device, or SHP PRO initiating circuit
• Approved for up to 35 ft (10.7 m) spacing
• .05 ohms/ft (.164 ohms/m) resistance per twisted pair wire, lower than any other type of linear heat detection wire
• Lower Cost than other types of heat detection
• Compatible with all Fike fire alarm and releasing panels
• Multiple Alarm temperatures: 155°F, 172°F, 190°F, 220°F (68°C, 78°C, 88°C, 105°C)
• Distance locating option available
• Multiple alarm temperatures can be mixed on the same zone
• Total zone length replacement unnecessary after alarm condition
• Longer standard spool lengths available: 500 ft, 1500 ft, 3000 ft (152 m, 457 m, 914 m)
• Nylon coated - for outdoor and harsh environments
• Polypropylene coated - for chemically harsh environments
• Guidewire for spans up to 250 ft (76 m) with supports at 15 ft (4.6 m) intervals
Form No. P.1.87.01-2
704 S.W. 10th Street · P.O. Box 610 · Blue Springs, Missouri 64013-0610 U.S.A. · (816) 229-3405 · www.fike.com
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