FyreLine Digital Linear Heat Detection System

Key Features
UL 521 approved and compliant with the EN54:28 standard
Cable based sensing allows detection at the point of risk
Low installation, maintenance and repair costs
Reliable solution for hazardous areas
Low material cost

Overview

FyreLine Digital Linear Heat Detection

FyreLine Digital Linear Heat Detection Systems provide a cost-effective and reliable fixed temperature heat detection solution that is suited to a wide range of applications.

FyreLine Digital Heat Sensing Cable is comprised of two tri-metallic conductors that are covered with advanced temperature sensitive polymers. The two conductors are twisted together and a protective outer sheathing is wrapped around them.

Once the temperature sensitive polymer reaches its rated temperature it melts, causing the two conductors to come into contact. The resulting short circuit signals to the fire alarm control panel that a fire (or extreme heat) has been detected.

Once a fire has been detected, or if the detection cable becomes damaged, the affected length of cable can be easily replaced; the damaged section can be removed and new section spliced in its place.

Fyreline Digital Linear Heat Sensing Cable is available with temperature ratings of 68°C, 88°C, 105°C or 185°C.


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Approvals

The FyreLine digital PVC coated linear heat detection cables are fully approved by the Underwriters Laboratories (UL) and bears the CE mark to show that they comply with all the applicable Directives including the CPR, EMC and the Low Voltage Directive (LVD).

FyreLine LHD Approvals


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Fire Alarm System Integration

FyreLine Digital LHD connected to zone monitor

The digital linear heat detection cable can be directly connected to a single zone of a conventional fire alarm control panel, or, easily interfaced to an addressable loop using an addressable zone/switch monitor.


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Sensing Cable Construction

FyreLine Digital LHD Construction

FyreLine linear fixed heat sensing cable is constructed using two twisted and tensioned, tri-metallic conductors. Each of the conductive cables are coated in a heat sensitive polymer which, when heated to its rated temperature, melts, causing the two cables to touch. The resulting short sends a signal to the fire alarm control panel, indicating that a fire (or excessive heat) has been detected. Once a fire has been detected the damaged length of cable is easily replaceable.


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Digital Sensing Cables

PVC Coated Sensing Cable

FyreLine Digital PVC Sensing Cable

The standard coating used on Digital cables is made from PVC and is suitable for most environments. However, PVC should not be used when the cables are directly exposed to UV (sunlight) or hazardous chemicals (eg. hydrocarbons) for long periods, or for applications where they may be exposed to regular mechanical abrasion.

Where the standard PVC is not recommended other materials/sheaths are available to provide a suitable solution.


Nylon Coated Sensing Cable

FyreLine Digital Nylon Sensing Cable

A Nylon coated cable is the common choice when hazardous hydrocarbons such as fuel oils, diesel, kerosene etc. are present. Nylon cables are coloured black and provide suitable UV protection when used in direct sunlight. Nylon is much tougher than PVC and therefore provides additional mechanical protection.


Stainless Steel Braid Coated Sensing Cable

FyreLine Digital Braided Stainless Steel Sensing Cable

Any of the above cables can be armoured by placing stainless steel braiding over the outside of the cable. This provides the ideal solution for areas where the cable may be accidentally cut or where it may be subject to mechanical abrasion.


High Temperature Coated Sensing Cable

FyreLine Digital High Temperature Sensing Cable

The High Temperature coated linear heat cable is manufactured from two different types of nylon, with the outer sheath being a chemical resistant material. Commonly used in high temperature areas, hazardous and safe areas where chemicals such as hydrocarbon fuel oils, diesel, kerosene etc. are present.


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Optional Digital Interface Monitor Module

FyreLine DiMM

The Digital Interface Monitor Module (DiMM) is a dual zone module for monitoring up to two zones of Digital Linear Heat Detection (DLHD) Cable.

If an overheat or fire situation triggers either zone of the Digital LHD cable, the unit automatically calculates and displays the distance along the cable, in feet and metres, to the alarm point. The two zones can operate independently of each other, or in interlock mode and a separate alarm and normally conducting fault output are provided for each zone.

The unit is intended to be installed between the FyreLine Digital Linear Heat Detection cable and a conventional or addressable fire alarm control panel. It has power, fault and alarm lights, as well as volt free outputs for fault and alarm, corresponding to each zone. It may also be connected to an industrial process control system using the two wire RS-485 Modbus RTU output.


Wiring Configurations

Conventional fire alarm systems

When used in conjunction with a conventional fire alarm control panel, FyreLine Digital (fixed temperature) linear heat detection cable should be connected to the initiating device circuit.

If the area to be protected is some distance away from the fire alarm control panel, leader cable may be used between the beginning of the heat sensing cable and the control panel. However, a junction box must be used to connect the leader cable to the heat sensing cable in order to establish a secure, waterproof electrical connection.

FyreLine Digital Conventional Fire Alarm System Wiring Configuration


Addressable fire alarm systems

When FyreLine Digital heat sensing cable is used as part of an addressable system, the heat sensing cable should be connected to the addressable loop using a switch or zone monitor. If the protected area is some distance away, leader cable may be used between the beginning of the heat sensing cable and the addressable switch or zone monitor. Again, when connecting the leader cable to the heat sensing cable, a junction box must be used to ensure a secure and waterproof electrical connection.

When using FyreLine Digital heat sensing cable in conjunction with an addressable fire alarm system, external power is not required for the cable.

FyreLine Digital Addressable Fire Alarm System Wiring Configuration


Alarm Point Distance Locator

An Alarm Point Distance Locator (APDL) can be used to provide the location of the point along the cable at which an alarm was triggered, giving an accurate a measurement in metres and feet.

Leader cable can be used between the APDL and the control panel or addressable switch/zone monitor and between the APDL and the heat sensing cable. As always a junction box must be used to maintain a secure and waterproof electrical connection.

When using an APDL it is essential to map the system to associate distances along the detection cable to locations within the building to help determine the area where an alarm has been triggered easily.

FyreLine Digital APDL Wiring Configuration


Tech Specs

Cable Construction

Construction Overall insulated, twisted pair of tri-metallic cores
Insulation 1kV tested protective outer coat
Additional Insulation Options Nylon
Approvals CE Marked, UL Listed
Maximum Zone Length 3,000m (10,000ft)
Wire Overall Diameter 3.60mm ± 0.12mm (0.142” ± 0.005”)
(Nylon/Polypropylene Coated Diameter) 4.50mm ± 0.12mm (0.177” ± 0.005”)
Minimum bend radius 50mm (2”)

Electrical

Max Voltage Rating 30Vac, 42Vdc
Resistance ~100Ω/km (29Ω/kft) per leg
Velocity of Propagation ~55%
Capacitance 88 – 150 pF/m (26 – 45 pF/ft)
Inductance 540 – 1050 nH/m (165 – 320 nH/ft)

Ordering Information

Alarm Point Distance Locator

18-004 Digital Interface Monitor Module, 2 Zone, 1m to 3000m (10,000ft), 12 - 36V DC

Standard PVC Sensing Cable

18-011 Digital Linear Heat Sensing Cable, 68C Alarm Temp, PVC, UL - 100m Reel Length
18-012 Digital Linear Heat Sensing Cable, 68C Alarm Temp, PVC, UL - 200m Reel Length
18-013 Digital Linear Heat Sensing Cable, 68C Alarm Temp, PVC, UL - 500m Reel Length
18-014 Digital Linear Heat Sensing Cable, 68C Alarm Temp, PVC, UL - 1000m Reel Length
18-021 Digital Linear Heat Sensing Cable, 88C Alarm Temp, PVC, UL - 100m Reel Length
18-022 Digital Linear Heat Sensing Cable, 88C Alarm Temp, PVC, UL - 200m Reel Length
18-023 Digital Linear Heat Sensing Cable, 88C Alarm Temp, PVC, UL - 500m Reel Length
18-024 Digital Linear Heat Sensing Cable, 88C Alarm Temp, PVC, UL - 1000m Reel Length
18-031 Digital Linear Heat Sensing Cable, 105C Alarm Temp, PVC, UL - 100m Reel Length
18-032 Digital Linear Heat Sensing Cable, 105C Alarm Temp, PVC, UL - 200m Reel Length
18-033 Digital Linear Heat Sensing Cable, 105C Alarm Temp, PVC, UL - 500m Reel Length
18-034 Digital Linear Heat Sensing Cable, 105C Alarm Temp, PVC, UL - 1000m Reel Length

Nylon Coating for Outdoor UV Protection & Increased Durability

18-041 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Nylon Coated, 100m Reel Length
18-042 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Nylon Coated, 200m Reel Length
18-043 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Nylon Coated, 500m Reel Length
18-044 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Nylon Coated, 1000m Reel Length
18-051 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Nylon Coated, 100m Reel Length
18-052 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Nylon Coated, 200m Reel Length
18-053 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Nylon Coated, 500m Reel Length
18-054 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Nylon Coated, 1000m Reel Length
18-061 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Nylon Coated, 100m Reel Length
18-062 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Nylon Coated, 200m Reel Length
18-063 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Nylon Coated, 500m Reel Length
18-064 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Nylon Coated, 1000m Reel Length

Stainless Steel Braided for Enhanced EMC & Mechanical Protection

18-071 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Stainless Steel Braided, 100m Reel Length
18-072 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Stainless Steel Braided, 200m Reel Length
18-073 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Stainless Steel Braided, 500m Reel Length
18-074 Digital Linear Heat Sensing Cable, 68C Alarm Temp, Stainless Steel Braided, 1000m Reel Length
18-081 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Stainless Steel Braided, 100m Reel Length
18-082 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Stainless Steel Braided, 200m Reel Length
18-083 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Stainless Steel Braided, 500m Reel Length
18-084 Digital Linear Heat Sensing Cable, 88C Alarm Temp, Stainless Steel Braided, 1000m Reel Length
18-091 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Stainless Steel Braided, 100m Reel Length
18-092 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Stainless Steel Braided, 200m Reel Length
18-093 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Stainless Steel Braided, 500m Reel Length
18-094 Digital Linear Heat Sensing Cable, 105C Alarm Temp, Stainless Steel Braided, 1000m Reel Length

High Temperature Sensor Cable, 185 Degrees C Alarm

18-101 Digital Linear Heat Sensing Cable, 185C Alarm Temp, 100m Reel Length
18-102 Digital Linear Heat Sensing Cable, 185C Alarm Temp, 200m Reel Length
18-103 Digital Linear Heat Sensing Cable, 185C Alarm Temp, 500m Reel Length
18-104 Digital Linear Heat Sensing Cable, 185C Alarm Temp, 1000m Reel Length

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