ThermoCable Linear Heat Detection System

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1 ThermoCable Linear Heat Detection System Estimating Guide 1. INTRODUCTION 1.1 Linear Heat Detection ThermoCable digital linear heat detection wire is a combination of advanced polymer and digital technologies that can detect heat anywhere along its entire length. ThermoCable consists of a twisted pair of extremely low resistance (.05 ohm/ft. of twisted pair) trimetallic conductors, sheathed in new advanced thermal polymers. These polymers are chemically engineered to breakdown 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 ambient temperatures. The distance locating option allows the control panel to identify and display the exact location, in feet or meters from the control panel, where the heat source interacted with the detection wire. Typical Pre-Action System Figure 1

2 SYSTEM COMPONENTS ThermoCable is easy to design, install, operate and maintain. Up to 10,000 feet (3,000m) of ThermoCable can be used on every zone of any approved conventional panel, and every contact monitor module of any approved addressable panel. Figure 2 illustrates a typical system, which highlights the easy to use ThermoCable components. You start with any approved conventional panel or any approved addressable contact monitor module. You may add an optional distance locating module using leader wires in a conduit to the beginning of the hazard zone, or you can connect ThermoCable directly to the distance locating module. The NEMA 4 junction box is the beginning of each zone where you connect your leader wires (if used) to a screw terminal. You exit the junction box using a moisture proof strain relief connector that seals the box as the zone begins. Immediately after a 6 inch (15cm) loop is put in the cable to allow for expansion and contraction. Next a mounting device that also allows the wire to expand and contract is placed every 3-5 ft. (1-1.5 m). ThermoCable mounting hardware comes in a series of different types specifically designed to meet every type of hazard. ThermoCable is spaced every 35 feet (10.7 meters), and strapped directly to the sprinkler piping if it is an integral part of a pre-action sprinkler system. As you approach the end of each zone add another expansion loop and terminate the wire in an ELR box with the end of line resistor supplied by your panel manufacturer It is that easy. ThermoCable does not require you purchase any expensive proprietary panels that require additional maintenance and cost. Simply add to your existing conventional system or add a contact monitor module to your already existing addressable system Figure 2 2

2. THERMOCABLE SYSTEM EXAMPLES Aircraft Hangars Baggage

Computer Rooms Conveyors Cooling Towers Elevator Shafts

Tanks Motors Off Shore Platforms Parking Decks Pipelines

Couplings Train Station Platforms Trash Rooms Tunnels

3 2. THERMOCABLE SYSTEM EXAMPLES Aircraft Hangars Baggage Handling Bridges and Piers Bulk Storage Cable Trays Computer Rooms Conveyors Cooling Towers Elevator Shafts Engine Compartments Computer Rooms Conveyors Cooling Towers Elevator Shafts Engine Compartments Floating Rooftop Tanks Motors Off Shore Platforms Parking Decks Pipelines Pumps Rack Storage Storage Warehouses Train Carriage Couplings Train Station Platforms Trash Rooms Tunnels Valves and Motors Wet Benches 3

4 3. ESTIMATING A THERMOCABLE SYSTEM ThermoCable Linear Heat Detector wire can be installed in a manner similar to that of spot type heat detectors at the ceiling level, which provides for broad or wide area detection. When estimating a system, it is recommended to include an additional 10% length of ThermoCable for sag and scrap. 3.1 Area Detection For broad or wide area detection, ThermoCable should be installed on the ceiling, or sidewalls within 20 inches (51cm) of the ceiling. Installations involving beam or joist construction will be addressed in the following sections. Figure 3 lists spacing for the appropriate listing agency. Temperature Rating (ThermoCable) UL/ULC FM 155 F (68 C) 35 (10.7 m) 30 (9.1 m) 172 F (78 C) 35 (10.7 m) 30 (9.1 m) 190 F (88 C) 35 (10.7 m) 30 (9.1 m) 220 F (105 C) 35 (10.7 m) 25 (7.6 m) Figure Smooth Ceiling Spacing The maximum spacing for smooth ceiling installations shall not be greater than the listed spacing between parallel detection wire runs and within half the listed spacing of any walls or partitions which rise to within 18 inches (46cm) of the ceiling. Figure 4 is an example of a smooth ceiling design using 35 foot (10.7m) spacing. Figure 4 For ceiling heights up to 30 feet (9.1m), ThermoCable may be spaced on 35 foot (10.7m) centers. For installations higher than 30 feet (9.1m), the spacing is reduced to half the listed spacing, 17 6 (5.3m) as shown in Figure 5. Ceiling Heights Multiply Min. Max. Listed Spacing by 0 30 (9.1m) (9.1m+).5 Figure 5 NOTE: For beam construction installations, please refer to NFPA 72 for additional details. 4

3.3 Typical Ceiling Detection Layout J Box Beginning of zone ThermoCable ELR-Box End of zone Figure 6 3.

As a general rule, there should be one detection wire run for every 10 feet (3m) of rack height. The detection wire should be attached to the load beam and run in the transverse flue space.

5 3.3 Typical Ceiling Detection Layout J Box Beginning of zone ThermoCable ELR-Box End of zone Figure Open Rack Storage without Sprinklers When installing the ThermoCable in open rack system without a sprinkler system, the number of detection wire runs is based on the height of the rack. As a general rule, there should be one detection wire run for every 10 feet (3m) of rack height. The detection wire should be attached to the load beam and run in the transverse flue space. Refer to NFPA 72 for more details. For example, an 18 (5.5m) rack should be given two wire runs while a 40 (12m) rack system should have four wire runs. 3.5 Open Rack Storage with Sprinkler Protection In the case of signal or double row racks, one run of ThermoCable is needed for each sprinkler level as shown in Figures 7 and 8. The detection wire should be attached to the load beam at the sprinkler level and run in the transverse flue space. For multiple row racks, each sprinkler line would require a corresponding run of detection wire. Figure 7 Figure 8 5

3.6 Cable Trays A sine wave pattern, as shown below in Figures 9 and 10, should be used when installing

8m) Figure 9 Figure 10 Estimating ThermoCable Length for Cable Trays Recommended installation requires

ThermoCable needed for a particular run.

6 3.6 Cable Trays A sine wave pattern, as shown below in Figures 9 and 10, should be used when installing ThermoCable in a cable tray application. 6 (1.8m) Figure 9 Figure 10 Estimating ThermoCable Length for Cable Trays Recommended installation requires that the ThermoCable be run in a sine wave pattern, it may be difficult to estimate the total length of ThermoCable needed for a particular run. The following calculation will help determine the approximate amount of ThermoCable needed for a cable tray installation (Figure 11). To determine the number of mounting point along the cable tray, divide the length of the cable tray by 3 and add 1. Cable Tray Length divided by Width Coefficient = Total Length of ThermoCable Cable Tray Width Width Coefficient 1 6 (.5m).87 2 (.6m).78 3 (.9m).65 4 (1.2m).57 Figure Conveyors Figure 12 6

3.8 Floating Rooftop Tanks 3-5 (1-1.5m) spacing between L-Brackets Figure 13 3.

7 3.8 Floating Rooftop Tanks 3-5 (1-1.5m) spacing between L-Brackets Figure Tunnels / Subways Figure Proximity Detection Equipment and In-Cabinet ThermoCable Figure 15 7

4. ESTIMATING COMPONENTS Once the type (outer jacket) and length of detection wire required for a hazard is calculated, the

The following guidelines will help identify each of the accessories needed to complete the system. 4.

ThermoCable portion of the circuit, and at the end of each ThermoCable wire run. Two are required for each ThermoCable run.

Strain Relief Connectors Required for all ThermoCable penetrations in to, or out of a standard or heavy duty J/ELR-Box.

Screw Terminal Required for each ThermoCable connection made in a standard or heavy duty J/ELR-Box.

2 Mounting Accessories: A variety of mounting accessories are available depending on the type of installation.

Push Pins Used to secure Cable Clips to Beam Clamps, Cable Tray Mounts, Universal Mounts and L-Brackets.

Cable Ties (Small Single Loop) For mounting using cable tie mounts and adhesive.

Use with Small Single Loop for mounting wire Beam Clamps Spring Steel or Zinc.

Use Cable Clip and Push Pin to secure ThermoCable to beam clamp Universal Mounting Clips Large Cable Tray Clips use Cable

8 4. ESTIMATING COMPONENTS Once the type (outer jacket) and length of detection wire required for a hazard is calculated, the appropriate number of accessories must be determined. The following guidelines will help identify each of the accessories needed to complete the system. 4.1 Connection Accessories: Standard and Heavy Duty J/ELR-Boxes - Used to house the connection of the leader cable to the ThermoCable portion of the circuit, and at the end of each ThermoCable wire run. Two are required for each ThermoCable run. A Strain Relief Connector and Screw Terminal are required for each J/ELR-Box installation. Strain Relief Connectors Required for all ThermoCable penetrations in to, or out of a standard or heavy duty J/ELR-Box. One required per enclosure. Two required for each ThermoCable splice made in a J/ELR-Box. Screw Terminal Required for each ThermoCable connection made in a standard or heavy duty J/ELR-Box. One required per enclosure or splice. 4.2 Mounting Accessories: A variety of mounting accessories are available depending on the type of installation. ThermoCable must be mounted at 3 to 5 foot intervals using approved fasteners. Cable Clips Nylon or Zinc. Push Pins Used to secure Cable Clips to Beam Clamps, Cable Tray Mounts, Universal Mounts and L-Brackets. Cable Ties (Double Loop) Various lengths for fastening to piping or other anchors. Cable Ties (Small Single Loop) For mounting using cable tie mounts and adhesive. (Large Single Loop) For 4 to 6 inch diameter pipe. Use with Small Single Loop for mounting wire Beam Clamps Spring Steel or Zinc. Available in various sizes for material thickness. Use Cable Clip and Push Pin to secure ThermoCable to beam clamp Universal Mounting Clips Available in various sizes for material thickness. Large Cable Tray Clips use Cable Clip and Push Pin to secure ThermoCable. Cable Tray Clips Available in various sizes for material thickness. Large Cable Tray L-Bracket Typically used in mounting for floating rooftop applications. Use with Cable Clip and Push Pin to secure ThermoCable. Eyebolts and Turnbuckles Used for ThermoCable with Guidewire installations. ThermoCable with Guidewire is supported at 15 foot intervals. Rubber Grommets are used to protect the ThermoCable. 4.3 Splicing Accessories: Splices must be made using a Screw Terminal and wrapped using the appropriate splicing tape. Sealant Tape is recommended for all splices. Splicing Tape Low Temperature Splicing Tape Sealant Tape 8

9 4.4 Sample Design Worksheet: DESIGN WORKSHEET DATE: PAGE OF CUSTOMER: ADDRESS: CITY: STATE: ZIP: PHONE: CONTACT: HAZARD: CEILING HEIGHT: WIDTH LENGTH scale : 9

10 Note: Be sure to include an additional 10% (sag/scrap) to the total length of ThermoCable needed. 10

11 DESIGN WORKSHEET DATE: PAGE OF CUSTOMER: ADDRESS: CITY: STATE: ZIP: PHONE: CONTACT: HAZARD: CEILING HEIGHT: WIDTH LENGTH scale : 11

12 Note: Be sure to include an additional 10% (sag/scrap) to the total length of ThermoCable needed. 12

13 DESIGN WORKSHEET DATE: PAGE OF CUSTOMER: ADDRESS: CITY: STATE: ZIP: PHONE: CONTACT: HAZARD: CEILING HEIGHT: WIDTH LENGTH scale : 13

14 Note: Be sure to include an additional 10% (sag/scrap) to the total length of ThermoCable needed. 14

Reference Guide 2.1. Certificate Number

Reference Guide 2.1. Certificate Number SAFE Reference Guide 2.1 This reference guide provides general information for the installation, servicing, and maintaining of a Linear Heat Detection System. For more detail, please refer to the Installation