XL-Trace System Application and Design Guide

R XL-Trace System Application and Design Guide Pipe Freeze Protection and Flow Maintenance for Commercial Construction Applications

Pipe Freeze Protection and Flow Maintenance 1. Pipe Freeze Protection and Flow Maintenance Introduction XL-Trace System This step-by-step design guide provides the tools necessary to design a Raychem XL-Trace pipe freeze protection or flow maintenance system. For other applications or for design assistance, contact your Tyco Thermal Controls representative or phone Tyco Thermal Controls at (800) 545-6258. Also, visit our web site at www.tycothermal.com. Section Contents Introduction..............................................................1 How to Use this Guide....................................................2 Safety Guidelines.......................................................2 Warranty..............................................................3 System Overview..........................................................3 XL-Trace Applications....................................................3 Self-Regulating Heating Cable Construction...................................4 Pipe Freeze Protection Applications............................................5 Typical Pipe Freeze Protection System.......................................5 General Water Piping....................................................6 Sprinkler Standpiping....................................................8 Flow Maintenance Applications...............................................9 Typical Flow Maintenance System..........................................9 Greasy Waste Lines.....................................................10 Fuel Lines............................................................13 Pipe Freeze Protection and Flow Maintenance Design.............................14 Design Step by Step....................................................14 Step 1 Determine design conditions.....................................15 Step 2 Select the heating cable.........................................15 Step 3 Determine the heating cable length.................................20 Step 4 Determine the electrical parameters................................22 Step 5 Select the connection kits and accessories...........................26 Step 6 Select the control system........................................31 Step 7 Select the power distribution.....................................33 Step 8 Complete the Bill of Materials.....................................36 XL-Trace System Pipe Freeze Protection and Flow Maintenance Design Worksheet......37 Raychem XL-Trace is designed for pipe freeze protection and flow maintenance in the following applications: Freeze protection of general water piping (aboveground and buried) Freeze protection of fire sprinkler system standpipes (aboveground) Flow maintenance of greasy waste lines (aboveground and buried) Flow maintenance of fuel lines (aboveground) 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 1 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE This guide does not cover applications in which any of the following conditions exist: Hazardous locations, as defined in the national electrical codes Pipe temperature other than specified in Table 1 on page 3 Pipe maintenance temperatures above 150 F (65 C) Supply voltage other than 120 V or 208 277 V Freeze protection of fire sprinkler system branch lines and sprinklers If your application conditions are different, or if you have any questions, contact your Tyco Thermal Controls representative or contact Tyco Thermal Controls directly at (800) 545-6258. How to Use this Guide This design guide presents Tyco Thermal Controls recommendations for designing an XL-Trace pipe freeze protection or flow maintenance system. It provides design and performance data, electrical sizing information, and application configuration suggestions. Following these recommendations will result in a reliable, energy-efficient system. OTHER REQUIRED DOCUMENTS This guide is not intended to provide comprehensive installation instructions. For complete XL-Trace pipe freeze protection and flow maintenance system installation instructions, please refer to the following additional required documents: XL-Trace System Installation and Operation Manual (H58033) Additional installation instructions are included with the connection kits, thermostats, controllers, and accessories If you do not have these documents, you can obtain them from the Tyco Thermal Controls web site at www.tycothermal.com. For products and applications not covered by this design guide, please contact your Tyco Thermal Controls representative or call Tyco Thermal Controls directly at (800) 545-6258. Safety Guidelines As with any electrical equipment, the safety and reliability of any system depends on the quality of the products selected and the manner in which they are installed and maintained. Incorrect design, handling, installation, or maintenance of any of the system connection kits could damage the system and may result in inadequate performance, overheating, electric shock, or fire. To minimize these risks and to ensure that the system performs reliably, read and carefully follow the information, warnings, and instructions in this guide. This symbol identifies particularly important safety warnings that must be followed. WARNING: To minimize the danger of fire from sustained electrical arcing if the heating cable is damaged or improperly installed, and to comply with the requirements of Tyco Thermal Controls, agency certifications, and national electrical codes, ground-fault equipment protection must be used on each heating cable branch circuit. Arcing may not be stopped by conventional circuit protection. 2 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Warranty System Overview 1. Pipe Freeze Protection and Flow Maintenance Tyco Thermal Controls standard limited warranty applies to all products. An extension of the limited warranty period to ten (10) years from the date of installation is available if a properly completed online warranty form is submitted within thirty (30) days from the date of installation. You can access the complete warranty on our web site at www.tycothermal.com. 2. Roof and Gutter De-Icing System Overview XL-Trace Applications The XL-Trace system provides freeze protection and flow maintenance for aboveground and buried pipe applications. The XL-Trace system is based on self-regulating heating cable technology. Tyco Thermal Controls offers the option of three self-regulating heating cables with the XL-Trace system: 5XL, 8XL, and 12XL for applications using 120 and 208 277 V power supplies. The cable s output is reduced automatically as the pipe warms, so there is no possibility of failure due to overheating. An XL-Trace system includes the heating cable, power connection, splice, tee connections, controls, contactors, power distribution panels, accessories, and the tools necessary for a complete installation. Identify which of the standard XL-Trace applications below pertain to your installation. Proceed to the appropriate design sections that follow. Table 1 XL-Trace Applications Application Pipe freeze protection General water piping Sprinkler piping Flow maintenance Greasy waste lines Fuel lines Description Freeze protection (40 F [4 C] minimum) of insulated, metal or plastic water piping Freeze protection (40 F [4 C] minimum) of insulated metal standpipes up to 20" Flow maintenance (110 F [43 C] minimum) for insulated greasy waste lines Flow maintenance (40 F [4 C] minimum) for insulated metal piping containing #2 fuel oil Specific application requirements Aboveground piping page 6 Buried piping page 7 For aboveground standpipes and supply Pipes only page 8 Aboveground piping page 10 Buried piping page 11 For aboveground piping only page 13 Note: If your application does not fit these guidelines, contact your local Tyco Thermal Controls representative or call (800) 545-6258. 3. Surface Snow Anti-Icing MI 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 3 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Self-Regulating Heating Cable Construction Raychem XL-Trace self-regulating heating cables are comprised of two parallel nickel-coated bus wires in a cross-linked polymer core, a tinned copper braid, and a fluoropolymer or polyolefin outer jacket. These cables are cut to length, simplifying the application design and installation. Modified polyolefin (-CR) or fluoropolymer (-CT) outer jacket Tinned-copper braid Modified polyolefin inner jacket Self-regulating conductive core Nickel-plated copper bus wire Fig. 1 XL-Trace heating cable construction In self-regulating technology, the number of electrical paths between bus wires changes in response to temperature fluctuations. As the temperature surrounding the heater decreases, the conductive core contracts microscopically. This contraction decreases electrical resistance and creates numerous electrical paths between the bus wires. Current flows across these paths to warm the core. As the temperature rises, the core expands microscopically. This expansion increases electrical resistance and the number of electrical paths decreases. The heating cable automatically reduces its output. At low temperature, there are many conducting paths, resulting in high output and rapid heat-up. Heat is generated only when it is needed and precisely where it is needed. At high temperature, there are few conducting paths and output is correspondingly lower, conserving energy during operation. At moderate temperature, there are fewer conducting paths because the heating cable efficiently adjusts by decreasing output, eliminating any possibility of overheating. Resistance The following graphs illustrate the response of self-regulating heating cables to changes in temperature. As the temperature rises, electrical resistance increases, and our heaters reduce their power output. Constant wattage Power Constant wattage Temperature Fig. 2 Self-regulating heating cable technology Temperature 4 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Pipe Freeze Protection Applications Pipe Freeze Protection Applications 1. Pipe Freeze Protection and Flow Maintenance Typical Pipe Freeze Protection System A pipe freeze protection system is designed to maintain water temperature at a minimum of 40 F (4 C) to prevent freezing. A typical pipe freeze protection system includes the XL-Trace self-regulating heating cables, connection kits, ambient temperature control, and power distribution. Power Distribution Panel 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI Thermostat Tee Kit 4. Surface Snow Anti-Icing ElectroMelt Heating Cable End Seal Kit 5. Freezer Frost Heave Prevention Power Connection Kit Splice Kit Cross Kit Lighted End Seal 6. Floor Heating 7. Technical Data Sheets Fig. 3 Typical XL-Trace pipe freeze protection system 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 5 of 41

1C 30F 10C 50F 43C 110F 21C 70F 32C 90F PIPE FREEZE PROTECTION AND FLOW MAINTENANCE General Water Piping General water piping is defined as metal or plastic water piping located in nonhazardous locations. ABOVEGROUND PIPING Junction box RayClic-PC power connection EC-TS-AMB electronic thermostat RayClic-S splice RayClic-LE lighted end seal (optional) XL-Trace heating cable Insulation RayClic-T tee RayClic-E end seal Fig. 4 Typical aboveground piping system Application Requirements The system complies with Tyco Thermal Controls requirements for aboveground general water piping when: The heating cable is permanently secured to insulated metal pipes with GT-66 glass tape, or to plastic pipes using AT-180 aluminum tape. A 30-mA ground-fault protection device (GFPD) is used. The heating cable is installed per manufacturer s instructions with approved Raychem connection kits. See Table 11 on page 27 and the XL-Trace System Installation and Operation Manual (H58033). Cable Selection See Step 2 Select the heating cable page 15. Approvals UL Listed, FM Approved, and CSA Certified for nonhazardous locations. for 12XL2-CR, -CT only 6 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

70F 21C 50F 90F 10C 32C 30F 110F 1C 43C BURIED PIPING Pipe Freeze Protection Applications 1. Pipe Freeze Protection and Flow Maintenance Wall Conduit FTC-XC power connection EC-TS-10 or EC-TS-25 electronic thermostat Ground Temperature sensor Insulation Alternate end seal RayClic-LE* with wall mountiung bracket Junction box RayClic-E end seal 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI RayClic-PC* with wall mountiung bracket Alternate power connection Ground XL-Trace heating cable Fig. 5 Typical buried piping system *To protect the heating cable run it inside Convolex tubing between the conduit and the RayClic connection kits. Application Requirements The system complies with Tyco Thermal Controls requirements for use on buried insulated metal or plastic pipe when: The pipeline is buried at least 2 feet deep. All heating cable connections (power, splice, tee, and end termination) are made aboveground. No buried or in-conduit splices or tees are used. The power connection and end seal are made in UL Listed and CSA Certified junction boxes above grade. The heating cable is protected from the pipe to the power connection box in UL Listed and CSA Certified water-sealed conduit (minimum 3/4-inch diameter) suitable for the location. A 30-mA ground-fault protection device (GFPD) is used. Closed-cell, waterproof thermal insulation with fire-retardant, waterproof covering is used. The heating cable is installed per manufacturer s instructions with approved Tyco Thermal Controls connection kits. See Table 13 on page 29 and the XL-Trace System Installation and Operation Manual (H58033). Cable Selection See Step 2 Select the heating cable page 15. Conduit Wall Approvals UL Listed, FM Approved, and CSA Certified for nonhazardous locations. 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications for 12XL2-CR, -CT only 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 7 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Sprinkler Standpiping XL-Trace is designed to maintain fire suppression system standpipes and supply piping at 40 F (4 C) in areas subject to freezing. FOR ABOVEGROUND STANDPIPES AND SUPPLY PIPES ONLY Thermal insulation XL-Trace Standpipe Control valves Ground Fig. 6 Standard sprinkler standpipe heating system layout Application Requirements The system complies with Tyco Thermal Controls requirements for freeze protection of sprinkler system piping when: Schedule 5, 10, 20, or 40 steel sprinkler standpipe up to and including 20 inches in diameter is used. UL Listed fiberglass insulation with weatherproof cladding is used. The circuit is protected by a 30-mA ground-fault protection device (GFPD). The system is controlled by an electronic controller with alarm contacts connected to a fire control panel, such as the DigiTrace 910. The heating cable is installed per manufacturer s instructions with approved Tyco Thermal Controls connection kits. See Table 11 on page 27 and the XL-Trace System Installation and Operation Manual (H58033). Cable Selection See Step 2 Select the heating cable page 15. Approvals UL and ULC Listed for use in nonhazardous locations. Note: XL-Trace systems are not currently UL Listed or ULC Listed for freeze-protecting sprinkler control valves or branch lines containing sprinklers. The 2007 edition of NFPA 13 (Standard for the Installation of Sprinkler Systems) allows listed electrical heat tracing to freeze protect fire suppression branch lines containing sprinklers. Approval agencies are underway developing test standards. 8 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Flow Maintenance Applications Flow Maintenance Applications 1. Pipe Freeze Protection and Flow Maintenance Typical Flow Maintenance System Power Connection Kit A flow maintenance system is designed to maintain cooking greasy waste lines and #2 fuel oil lines above the temperature at which the viscosity inhibits fluid flow. A typical flow maintenance system includes the XL-Trace self-regulating heating cables with a fluoropolymer outer jacket, connection kits, line-sensing temperature control and power distribution. 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI Thermostat Power Distribution Panel 4. Surface Snow Anti-Icing ElectroMelt Splice Kit Heating Cable 5. Freezer Frost Heave Prevention Tee Kit Grade Lighted End Seal 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications Fig. 7 Typical XL-Trace flow maintenance system 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 9 of 41

1C 30F 10C 50F 43C 110F 21C 70F 32C 90F PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Greasy Waste Lines Greasy waste lines are defined as piping used for the disposal of waste oils and fats created in the cooking process. Typical applications include greasy waste lines from commercial restaurants. A grease-line flow maintenance system is designed to maintain a 110 F (43 C) minimum fluid temperature. ABOVEGROUND PIPING Junction box RayClic-PC power connection EC-TS-10 or EC-TS-25 electronic thermostat (optional) Alternate end seal RayClic-E RayClic-S splice XL-Trace heating cable RayClic-SB-04 pipe mounting bracket Insulation RayClic-LE lighted end seal Fig. 8 Typical aboveground piping system Application Requirements The system complies with Tyco Thermal Controls requirements for aboveground greasy waste lines when: The heating cable is permanently secured to metal pipes with GT-66 glass tape, or to plastic pipes using AT-180 aluminum tape. The heating cable must have a fluoropolymer outer jacket (-CT). A 30-mA ground-fault protection device (GFPD) is used. Tees and splices are installed using pipe mounting brackets, not in direct contact with piping. The heating cable is installed per manufacturer s instructions with approved Tyco Thermal Controls connection kits. See Table 11 on page 27 and the XL-Trace System Installation and Operation Manual (H58033). Cable Selection See Step 2 Select the heating cable page 15. Approvals XL-Trace systems (-CT only) are UL Listed, FM Approved, and CSA Certified for nonhazardous locations. for 12XL2-CR, -CT only 10 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

70F 21C 50F 90F 10C 32C 30F 110F 1C 43C BURIED PIPING Flow Maintenance Applications 1. Pipe Freeze Protection and Flow Maintenance Wall Conduit FTC-XC power connection EC-TS-10 or EC-TS-25 electronic thermostat Ground Temperature sensor Insulation Alternate end seal RayClic-LE* with wall mountiung bracket Junction box RayClic-E end seal 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI RayClic-PC* with wall mountiung bracket Alternate power connection Ground XL-Trace heating cable Fig. 9 Typical buried greasy waste line *To protect the heating cable run it inside Convolex tubing between the conduit and the RayClic connection kits. Application Requirements The system complies with Tyco Thermal Controls requirements for buried greasy waste lines when: The heating cable is permanently secured to metal piping. The heating cable must have a fluoropolymer outer jacket (-CT). The pipeline is buried at least 2 feet deep. All heating cable splices or tees are made aboveground. No buried or in-conduit splices or tees are allowed. The power connection and end seal are made in UL Listed and CSA Certified junction boxes above grade. The heating cable is protected from the pipe to the power connection box in UL Listed and CSA Certified conduit (minimum 3/4-inch diameter) suitable for the location. A 30-mA ground-fault protection device (GFPD) is used. Closed-cell, waterproof thermal insulation with fire-retardant, waterproof covering is used. The heating cable is installed per manufacturer s instructions with approved Tyco Thermal Controls connection kits. See Table 13 on page 29 and the XL-Trace System Installation and Operation Manual (H58033). Cable Selection See Step 2 Select the heating cable page 15. Conduit Wall 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 11 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Approvals XL-Trace systems (-CT only) are UL Listed, FM Approved, and CSA Certified for nonhazardous locations. for 12XL2-CR, -CT only 12 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

1C 30F 10C 50F 43C 110F 21C 70F 32C 90F Fuel Lines Flow Maintenance Applications Fuel lines are defined as those carrying #2 fuel oil. A fuel line flow maintenance system is designed to maintain a 40 F (4 C) minimum fluid temperature to maintain flow. FOR ABOVEGROUND PIPING ONLY RayClic-PC power connection Junction box EC-TS-10 or EC-TS-25 electronic thermostat 1. Pipe Freeze Protection and Flow Maintenance 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI RayClic-S splice XL-Trace heating cable RayClic-SB-04 pipe mounting bracket Insulation RayClic-LE lighted end seal 4. Surface Snow Anti-Icing ElectroMelt Fig. 10 Typical aboveground piping system Application Requirements The system complies with Tyco Thermal Controls requirements for aboveground #2 fuel oil piping when: The heating cable is permanently secured to metal pipes with GT-66 glass tape, or to plastic pipes using AT-180 aluminum tape. The heating cable must have a fluoropolymer outer jacket (-CT). Tees and splices are installed using pipe mounting brackets, not in direct contact with piping. A 30-mA ground-fault protection device (GFPD) is used. The heating cable is installed per manufacturer s instructions with approved Tyco Thermal Controls connection kits. See Table 11 on page 27 and the XL-Trace System Installation and Operation Manual (H58033). Cable Selection See Step 2 Select the heating cable page 15. Approvals XL-Trace systems (-CT only) are UL Listed, FM Approved, and CSA Certified for nonhazardous locations. 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 13 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Pipe Freeze Protection and Flow Maintenance Design This section details the design steps necessary to design your application. The examples provided in each step are intended to incrementally illustrate the project parameter output for two sample designs from start to finish. As you go through each step, use the XL-Trace System Pipe Freeze Protection and Flow Maintenance Design Worksheet page 37, to document your project parameters, so that by the end of this section you will have the information you need for your Bill of Materials. Design Step by Step Your system design requires the following essential steps. 1 Determine design conditions 2 Select the heating cable 3 Determine the heating cable length 4 Determine the electrical parameters 5 Select the connection kits and accessories 6 Select the control system 7 Select the power distribution 8 Complete the Bill of Materials Note: These steps will vary depending on the applications, as described on the pages following. 14 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Pipe Freeze Protection and Flow Maintenance 1. Determine design conditions 2. Select the heating cable 3. Determine the heating cable length 4. Determine the electrical parameters 5. Select the connection kits and accessories 6. Select the control system 7. Select the power distribution 8. Complete the Bill of Materials Pipe Freeze Protection and Flow Maintenance Design Step 1 Determine design conditions Collect the following information to determine your design conditions: Location Pipe diameter and material Pipe length Thermal insulation thickness and type Minimum ambient temperature Maintain temperature Example: Pipe Freeze Protection Water Piping Location Aboveground, outdoor Pipe diameter and material 2-inch plastic Pipe length 300 ft (91 m) Thermal insulation thickness and type 1-inch fiberglass Minimum ambient temperature 20 F ( 29 C) Maintain temperature 40 F (4 C) Example: Flow Maintenance Greasy Waste Line Location Buried Pipe diameter and material 4-inch metal Pipe length 100 ft (30 m) Thermal insulation type and thickness 1-inch fiberglass Minimum ambient temperature 50 F (10 C) Maintain temperature 110 F (43 C) 1. Pipe Freeze Protection and Flow Maintenance 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention Pipe Freeze Protection and Flow Maintenance 1. Determine design conditions 2. Select the heating cable 3. Determine the heating cable length 4. Determine the electrical parameters 5. Select the connection kits and accessories 6. Select the control system 7. Select the power distribution 8. Complete the Bill of Materials Step 2 Select the heating cable To select the appropriate XL-Trace heating cable for your application, you must determine your cable supply voltage, power output, and outer jacket. Once you select these, you will be able to determine the catalog number for your cable. HEATING CABLE CATALOG NUMBER Before beginning, take a moment to understand the structure underlying the heating cable catalog numbers. You will refer to this numbering convention throughout the product selection process. Your goal is to determine the catalog number for the product that best suits your needs. Power output (W/ft) Product family Voltage 1 = 120 V (only available for 5 or 8) 2 = 208, 240, 277 V (available for 5, 8, or 12) Fig. 11 Heating cable catalog number Catalog number: 5, 8 or 12 XL 1 or 2 -CR -CT Jacket type: Polyolefin or Fluoropolymer (required for grease and fuel lines) 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 15 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE SELECT HEATING CABLE SUPPLY VOLTAGE Select the heating cable supply voltage. Note that a higher supply voltage will allow for longer circuit lengths. Supply voltage options include: 1 = 120 V 2 = 208 277 V SELECT POWER OUTPUT Use the product selection tables immediately following in Step 2 to determine the correct heating cable for your application. The tables show which heating cable and how many runs of the heating cable must be used. When different cables can be used for the specified conditions, you typically select the option with the lowest power output. For pipe freeze protection or fuel flow maintenance application, use Table 2 and Table 3 to select the appropriate power output. For a grease flow maintenance application, use Table 4 to select the appropriate power output. SELECT OUTER JACKET Select the appropriate heating cable outer jacket for the application. Jacket options include: -CR Compatible with most XL-Trace applications -CT Required for grease and fuel line flow maintenance; may be used in other XL-Trace applications for improved mechanical strength and chemical resistance Example: Pipe Freeze Protection Water Piping Supply voltage 120 V Power output 5 W/ft (16 W/m) Outer jacket CR Catalog number 5XL1-CR Number of heating cable runs 1 Example: Flow Maintenance Greasy Waste Line Supply voltage 208 V Power output 12 W/ft (26 W/m) Outer jacket CT Catalog number 12XL2-CT Number of heating cable runs 2 16 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Pipe Freeze Protection and Flow Maintenance Design 1. Pipe Freeze Protection and Flow Maintenance Table 2 Pipe Freeze Protection and Fuel Line Flow Maintenance Product Selection: 40 F [4 C] Maintain for 120, 208, and 240 V Presented below are pre-engineered product selections for common insulation thicknesses, pipe sizes, and ambient temperatures. Use this table for aboveground and buried pipe applications, including standpipe sprinkler applications. 120, 208, and 240 V Metal pipe attached with GT-66 glass tape Plastic pipe attached with AT-180 aluminum tape Min. ambient temperature 40 F ( 40 C) 0 F ( 18 C) 20 F ( 7 C) 40 F ( 40 C) 0 F ( 18 C) 20 F ( 7 C) Pipe diameter (in) Insulation thickness (in) 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 1/2 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 3/4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/4 1 1/2 2 3 4 6 8 10 12 14 16 18 20 1/2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 2 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 2 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 3 2 1 2 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 1 1/2 2 1 1 1 1 1 1 1 1 2 2 1 2 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 4 3 2 2 2 1 1 1 1 1 1/2 2 2 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 2 2 1 2 1 1 1 1 1 1 4 2 2 2 1 1 1 1 1 5 3 2 3 2 1 1 2 1 1 1/2 3 2 1 2 1 1 1 1 1 3 2 2 2 2 1 1 1 1 2 2 2 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 3 2 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 3 2 1 2 1 1 1 1 1 3 2 1 1 1 1 1 1 1 1 2 2 1 2 1 1 1 1 1 2 3 2 1 2 1 1 1 1 1 3 2 2 2 1 1 1 1 1 3 2 1 1 1 1 1 1 1 1 3 2 1 2 1 1 1 1 1 2 3 2 2 2 1 1 1 1 1 4 3 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 2 3 2 2 2 1 1 1 1 1 4 3 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 2 3 2 2 2 1 1 1 1 1 5 3 2 3 2 1 1 2 1 3 2 2 1 1 1 1 1 1 1 3 2 2 2 1 1 1 1 1 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 17 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Table 3 Pipe Freeze Protection and Fuel Line Flow Maintenance Product Selection: 40 F [4 C] Maintain for 277 V Presented below are pre-engineered product selections for common insulation thicknesses, pipe sizes, and ambient temperatures. Use this table for aboveground and buried pipe applications, including standpipe sprinkler applications. 277 V Metal pipe attached with GT-66 glass tape Plastic pipe attached with AT-180 aluminum tape Min. ambient temperature 40 F ( 40 C) 0 F ( 18 C) 20 F ( 7 C) 40 F ( 40 C) 0 F ( 18 C) 20 F ( 7 C) Pipe diameter (in) Insulation thickness (in) 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 5XL 8XL 12XL 1/2 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3/4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/4 1 1/2 2 3 4 6 8 10 12 14 16 18 20 1/2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 3 3 2 2 2 2 1 1 1 1 1/2 2 2 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 2 2 2 1 2 1 1 1 1 3 3 2 2 2 1 1 1 1 1 1/2 2 2 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 2 2 2 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 4 4 2 2 2 1 1 1 1 1 1/2 2 2 1 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 2 2 2 1 1 1 1 1 1 1 2 2 2 1 2 1 1 1 1 3 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 2 2 2 1 2 1 1 1 1 2 3 3 2 2 2 1 1 1 1 3 3 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 2 3 3 2 2 2 1 1 1 1 4 4 2 2 2 1 1 1 1 3 2 2 1 1 1 1 1 1 1 3 3 2 2 2 1 1 1 1 18 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Pipe Freeze Protection and Flow Maintenance Design 1. Pipe Freeze Protection and Flow Maintenance Table 4 Greasy Waste Line Flow Maintenance Product Selection: 110 F [43 C] Maintain Note: -CT jacket required Presented below are pre-engineered product selections for common insulation thicknesses, pipe sizes, and ambient temperatures. Use this table for aboveground and buried pipe applications. Pipe diameter (in) 8XL2-CT 2 3 4 6 8 12XL2-CT 2 3 4 6 8 Minimum ambient temperature Applied voltage 120 208 240 Insulation thickness (in) 0 F ( 18 C) Metal pipe attached with GT-66 glass cloth tape 277 120 208 240 Outdoor 20 F ( 7 C) 277 120 208 240 40 F (4 C) 277 120 208 240 Buried pipe 50 F (10 C) 277 120 208 240 Indoors 65 F (18 C) 277 120 208 240 0 F ( 18 C) Plastic pipe attached with AT-180 aluminum tape 277 120 208 240 Outdoor 20 F ( 7 C) 277 120 208 240 40 F (4 C) Buried pipe 277 120 208 240 50 F (10 C) 277 120 208 240 Indoors 65 F (18 C) 1 3 2 3 2 2 2 2 1 1 1 4 4 4 3 3 3 3 2 2 2 1 1/2 2 2 2 2 2 1 1 1 1 1 4 3 3 3 3 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 3 3 3 2 2 2 2 2 2 2 1 4 3 3 3 3 2 2 2 2 1 6 5 5 4 4 3 3 3 3 2 1 1/2 3 2 2 2 2 2 2 1 1 1 4 3 4 3 3 3 3 2 2 2 2 3 2 2 2 2 1 2 1 1 1 4 3 3 3 3 2 2 2 2 2 1 5 4 4 3 3 3 3 2 2 2 7 5 6 5 5 4 4 3 3 3 1 1/2 4 3 3 2 2 2 2 2 2 1 5 4 4 4 4 3 3 3 3 2 2 3 2 3 2 2 2 2 1 1 1 4 4 4 3 3 3 3 2 2 2 1 6 5 5 4 4 3 3 3 3 2 9 7 8 6 6 5 5 4 4 3 1 1/2 5 4 4 3 3 3 3 2 2 2 7 5 6 5 5 4 4 3 3 3 2 4 3 3 3 3 2 2 2 2 1 5 4 5 4 4 3 3 3 3 2 1 8 6 7 5 5 4 4 3 3 3 11 9 9 7 8 6 6 5 5 4 1 1/2 6 5 5 4 4 3 3 3 3 2 8 6 7 6 6 5 5 4 4 3 2 5 4 4 3 3 3 3 2 2 2 7 5 6 5 5 4 4 3 3 3 3 3 3 3 2 2 2 2 2 2 1 5 4 4 4 4 3 3 3 3 2 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 1 1 1 1 1/2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 1 1 1 3 2 2 2 2 2 2 2 2 1 1 1/2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 1 1 1 2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 2 2 2 1 2 1 1 1 1 1 3 3 3 2 2 2 2 2 2 2 1 1/2 2 1 1 1 1 1 1 1 1 1 3 2 2 2 2 2 2 2 2 1 2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 1 1 1 1 3 2 2 2 2 2 2 1 1 1 4 3 3 3 3 2 2 2 2 2 1 1/2 2 2 2 1 2 1 1 1 1 1 3 3 3 2 2 2 2 2 2 2 2 2 1 2 1 1 1 1 1 1 1 3 2 2 2 2 2 2 2 2 1 1 4 3 3 2 2 2 2 2 2 1 5 4 4 3 3 3 3 2 2 2 1 1/5 3 2 2 2 2 1 2 1 1 1 4 3 3 3 3 2 2 2 2 2 2 2 2 2 1 2 1 1 1 1 1 3 3 3 2 2 2 2 2 2 2 3 2 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 1 277 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 19 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Pipe Freeze Protection and Flow Maintenance 1. Determine design conditions 2. Select the heating cable 3. Determine the heating cable length 4. Determine the electrical parameters 5. Select the connection kits and accessories 6. Select the control system 7. Select the power distribution 8. Complete the Bill of Materials Step 3 Determine the heating cable length In Step 2 you selected the appropriate heating cable from Table 2 through Table 4. These tables also list the number of runs of heating cable required for the pipe. Multiply the length of the pipe by the number of heating cable runs for the heating cable length. Heating cable length = Pipe length x No. heating cable runs Additional heating cable will be required for heat sinks and connection kits. Use Table 5 and Table 6 to determine the additional footage required for heat sinks (valves, flanges, and pipe supports). You will determine the additional heating cable for connection kits in Step 5. Round up fractional lengths to ensure heating cable lengths are sufficient. Total heating cable length required = (Pipe length x No. + heating cable runs) Table 5 Additional Heating Cable for Valves Additional heating cable for heat sinks (valves, pipe supports, and flanges) Pipe diameter (IPS) (inches) Heating cable in feet (meters) 1/2 0.8 (0.24) 3/4 1.3 (0.4) 1 2.0 (0.6) 1-1/4 3.3 (1.1) 1-1/2 4.3 (1.3) 2 4.3 (1.3) 3 4.3 (1.3) 4 4.3 (1.3) 6 5.0 (1.5) 8 5.0 (1.5) 10 5.6 (1.7) 12 5.9 (1.9) 14 7.3 (2.2) 18 9.4 (2.9) 20 10.5 (3.2) Table 6 Additional Heating Cable for Pipe Supports and Flanges Support Additional cable Pipe hangers (insulated) No additional heating cable Pipe hangers noninsulated Add 2x pipe diameter and U-bolt supports Welded support shoes Add 3x the length of the shoe Flanges Add 2x pipe diameter Note: For applications where more than one heating cable is required per foot of pipe, this correction factor applies for each cable run. 20 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Pipe Freeze Protection and Flow Maintenance Design Example: Pipe Freeze Protection Water Piping Pipe length 300 ft (91 m) (from Step 1) Pipe diameter 2-inch plastic (from Step 1) Number of heating cable runs 1 (from Step 2) Valves 3 gate valves 4.3 ft x 3 gate valves = 12.9 ft (3.9 m) Pipe supports 5 pipe hangers with U-bolts 2-inch pipe diameter = 2 / 12 = 0.17 ft [0.17 ft pipe diameter x 2] x 5 pipe supports = 1.7 ft (0.5 m) Flanges 0 Total heating cable for heat sinks 12.9 ft (3.9 m) + 1.7 ft (0.5 m) = 14.6 ft (4.4 m) Rounded up to 15 ft (5 m) Total heating cable length required 300 ft (91 m) x 1 run + 15 ft = 315 ft (96 m) of 5XL1-CR 1. Pipe Freeze Protection and Flow Maintenance 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI Example: Flow Maintenance Greasy Waste Line Pipe length 100 ft (30 m) (from Step 1) Pipe diameter 4-inch metal (from Step 1) Number of heating cable runs 2 (from Step 2) Valves 2 gate valves [4.3 ft x 2 gate valves] x 2 runs = 17.2 ft (5.2 m) Pipe supports 2 non-insulated hangers 4-inch pipe diameter = 4 / 12 = 0.33 ft [0.33 ft pipe diameter x 2) x 2 pipe supports] x 2 runs = 2.6 ft (0.8 m) Flanges 2 4-inch pipe diameter = 4 / 12 = 0.33 ft [(2 x 0.33 ft (pipe diameter) x 2 flanges] x 2 runs = 2.6 ft (0.8 m) Total heating cable for heat sinks 17.2 ft (5.2 m) + 2.6 ft (0.8 m) + 2.6 ft (0.8 m) = 22.4 ft (4.4 m) Rounded up to 23 ft (7 m) Total heating cable length required 100 ft x 2 runs + 23 ft = 223 ft (68 m) of 12XL2-CT 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 21 of 41

Pipe Freeze Protection and Flow Maintenance Design 1. Pipe Freeze Protection and Flow Maintenance Table 7 Circuit Breaker Sizing for Pipe Freeze Protection and Fuel Line Flow Maintenance: 40 F [4 C] Maintain 120 V Minimum start-up temperature 20 F ( 29 C) 0 F ( 18 C) 32 F (0 C) 40 F 2 (4 C) 208, 240, 277 V Minimum start-up temperature 20 F ( 29 C) 0 F ( 18 C) CB size 5XL1 8XL1 Amps 120 V 120 V ft m ft m 15 95 29 76 23 20 127 39 101 31 30 190 58 151 46 40 1 270 82 210 64 15 111 34 86 26 20 148 45 115 35 30 222 68 172 53 40 1 270 82 210 64 15 153 47 111 34 20 203 62 148 45 30 270 82 210 64 40 1 270 82 210 64 15 167 51 120 37 20 222 68 160 49 30 270 82 210 64 40 1 270 82 210 64 CB size 5XL2 8XL2 12XL2 Amps 208 V 240 V 277 V 208 V 240 V 277 V 208 V 240 V 277 V ft m ft m ft m ft m ft m ft m ft m ft m ft m 15 165 50 170 52 170 52 131 40 135 41 137 42 113 34 113 34 113 35 20 220 67 227 69 227 69 175 53 180 55 183 56 150 46 150 46 151 46 30 330 101 340 104 341 104 262 80 270 82 275 84 226 69 225 69 227 69 40 1 470 143 454 138 454 139 370 113 360 110 366 112 301 92 300 92 303 92 15 193 59 198 60 199 61 149 46 154 47 157 48 123 38 123 38 124 38 20 257 78 265 81 265 81 199 61 205 63 209 64 165 50 164 50 165 50 30 385 117 397 121 398 121 299 91 308 94 313 96 247 75 246 75 247 75 40 1 470 143 490 149 530 162 370 113 390 119 418 127 329 100 328 100 330 101 15 264 81 272 83 273 83 192 59 198 60 202 62 145 44 144 44 145 44 32 F 20 353 107 363 111 364 111 257 78 264 81 269 82 194 59 192 59 193 59 (0 C) 30 470 143 490 149 530 162 370 113 390 119 404 123 290 89 288 88 289 88 40 1 470 143 490 149 530 162 370 113 390 119 420 128 340 104 360 110 380 116 15 289 88 298 91 298 91 208 63 214 65 218 66 152 46 151 46 151 46 40 F 2 20 385 117 397 121 398 121 277 85 286 87 291 89 202 62 201 61 201 61 (4 C) 30 470 143 490 149 530 162 370 113 390 119 420 128 304 93 301 92 302 92 40 1 470 143 490 149 530 162 370 113 390 119 420 128 340 104 360 110 380 116 1 Use only the FTC-P power connection kits when a 40 A circuit breaker is required 2 Ambient control or buried 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention 6. Floor Heating 7. Technical Data Sheets 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 23 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Table 8 Circuit Breaker Sizing for Greasy Waste Line Flow Maintenance: 110 F [43 C] Maintain Minimum start-up temperature 0 F ( 18 C) 20 F ( 7 C) 40 F (4 C) 50 F 2 (10 C) CB size 8XL2-CT 12XL2-CT Amps 208 V 240 V 277 V 208 V 240 V 277 V ft m ft m ft m ft m ft m ft m 15 149 45 154 47 156 48 123 38 123 38 124 38 20 199 61 205 62 208 64 165 50 164 50 165 50 30 298 91 307 94 313 95 247 75 246 75 247 75 40 1 398 121 410 125 417 127 329 100 328 100 330 101 15 173 53 178 54 182 55 136 42 135 41 136 41 20 231 70 238 73 242 74 182 55 181 55 181 55 30 346 106 357 109 363 111 272 83 271 83 272 83 40 1 462 131 476 145 484 148 363 111 361 110 362 111 15 206 63 213 65 216 66 152 46 151 46 151 46 20 275 84 284 86 289 88 202 62 201 61 201 61 30 413 126 425 130 433 132 304 93 301 92 302 92 40 1 550 168 567 173 577 176 405 123 402 122 402 123 15 228 70 235 72 239 73 161 49 160 49 160 49 20 304 93 314 96 319 97 215 66 213 65 213 65 30 457 139 470 143 479 146 322 98 319 97 319 97 40 1 609 186 627 191 638 195 430 131 426 130 426 130 15 272 83 280 85 285 87 177 54 175 53 175 53 65 F 3 20 362 110 373 114 380 116 237 72 234 71 233 71 (18 C) 30 543 166 560 171 570 174 355 108 351 107 350 107 40 1 724 221 746 228 760 232 430 131 460 140 466 142 1 Use only the FTC-P power connection kits when a 40 A circuit breaker is required 2 Buried pipe applications 3 Indoor applications WARNING: To minimize the danger of fire from sustained electrical arcing if the heating cable is damaged or improperly installed, and to comply with the requirements of Tyco Thermal Controls, agency certifications, and national electrical codes, ground-fault equipment protection must be used on each heating cable branch circuit. Arcing may not be stopped by conventional circuit protection. Example: Pipe Freeze Protection Water Piping Total heating cable length 315 ft of 5XL1-CR (from Step 3) Supply voltage 120 V (from Step 2) Minimum start-up temperature 20 F ( 29 C) (from Step 1) Number of circuits 315 ft / (180 ft max CL) = 1.8 circuits Round up to 2 circuits Example: Flow Maintenance Greasy Waste Line Total heating cable length 223 ft of 12XL2-CT (from Step 3) Supply voltage 208 V (from Step 2) Minimum start-up temperature 50 F (10 C) (from Step 1) Number of circuits 223 ft / 280 ft = 0.8 circuits Round up to 1 circuit 24 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

Table 9 Transformer Sizing Maximum Amps per ft/m for 5XL1, 8XL1, and 5XL2 Pipe Freeze Protection and Flow Maintenance Design DETERMINE TRANSFORMER LOAD Transformers must be sized to handle the load of the heating cable. Use the following tables to calculate the total transformer load. Minimum start-up 5XL1 8XL1 5XL2 temperature 120 V 120 V 208 V 240 V 277 V ( F) ( C) A/ft A/m A/ft A/m A/ft A/m A/ft A/m A/ft A/m 20 29 0.115 0.377 0.159 0.521 0.069 0.226 0.067 0.219 0.067 0.219 0 18 0.105 0.343 0.139 0.457 0.060 0.198 0.059 0.192 0.058 0.192 20 7 0.090 0.294 0.120 0.394 0.052 0.170 0.050 0.165 0.050 0.164 40 4 0.075 0.246 0.101 0.331 0.043 0.142 0.042 0.138 0.042 0.137 50 10 0.067 0.221 0.091 0.299 0.039 0.128 0.038 0.124 0.038 0.124 65 18 0.056 0.185 0.077 0.251 0.033 0.107 0.032 0.104 0.032 0.103 1. Pipe Freeze Protection and Flow Maintenance 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI Table 10 Transformer Sizing Maximum Amps per ft/m for 8XL2 and 12XL2 Minimum start-up 8XL1 12XL2 temperature 208 V 240 V 277 V 208 V 240 V 277 V ( F) ( C) A/ft A/m A/ft A/m A/ft A/m A/ft A/m A/ft A/m A/ft A/m 20 29 0.092 0.301 0.089 0.292 0.087 0.287 0.106 0.349 0.106 0.349 0.106 0.347 0 18 0.080 0.264 0.078 0.256 0.077 0.252 0.097 0.319 0.098 0.320 0.097 0.318 20 7 0.069 0.227 0.067 0.221 0.066 0.217 0.088 0.289 0.089 0.291 0.088 0.290 40 4 0.058 0.191 0.056 0.185 0.055 0.182 0.079 0.259 0.080 0.261 0.080 0.261 50 10 0.053 0.172 0.051 0.167 0.050 0.164 0.074 0.244 0.075 0.247 0.075 0.247 65 18 0.044 0.145 0.043 0.141 0.042 0.138 0.068 0.222 0.068 0.225 0.069 0.225 4. Surface Snow Anti-Icing ElectroMelt 5. Freezer Frost Heave Prevention Use Table 9 or Table 10 to determine the applied voltage and the maximum A/ft (A/m) at the minimum start up temperature to calculate the transformer load as follows: Max A/ft at minimum start-up temperature x Heating cable length (ft) x Supply voltage x No. of circuits 1,000 Example: Pipe Freeze Protection Water Piping Total heating cable length 315 ft of 5XL1-CR (from Step 3) Minimum start-up temperature 20 F ( 29 C) (from Step 1) Circuit breaker sizing 30 A = Transformer load (kw) 6. Floor Heating 7. Technical Data Sheets Max A/ft at 20 F x Total feet x Supply voltage x No. of circuits 1,000 Transformer load (kw) = 8.7 kw = (0.115 A/ft x 315 ft x 120 V) x 2 / 1,000 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 25 of 41

PIPE FREEZE PROTECTION AND FLOW MAINTENANCE Example: Flow Maintenance Greasy Waste Line Total heating cable length 223 ft of 12XL2-CT (from Step 3) Minimum start-up temperature 50 F (from Step 1) Circuit breaker sizing 30 A Max A/ft at 50 F x Total feet x Supply voltage x No. of circuits 1,000 = (0.074 A/ft x 223 ft x 208 V) x 1 / 1,000 Transformer load (kw) = 3.43 kw Pipe Freeze Protection and Flow Maintenance 1. Determine design conditions 2. Select the heating cable 3. Determine the heating cable length 4. Determine the electrical parameters 5. Select the connection kits and accessories 6. Select the control system 7. Select the power distribution 8. Complete the Bill of Materials Step 5 Select the connection kits and accessories All XL-Trace systems require a power connection and end seal kit. Splice and tee kits are used as required. Use Table 11 on page 27 (for aboveground applications) and Table 13 on page 29 (for buried applications) to select the appropriate connection kits. Note: Add extra cable on your Bill of Materials for power connections, tees, and end seals. See Table 11 on page 27, Table 13 on page 29, and Table 14 on page 30 for more information. WARNING: Approvals and performance are based on the use of Tyco Thermal Controls-specified parts only. Do not substitute parts or use vinyl electrical tape. ABOVEGROUND PIPING RayClic-PC powered connection Alternate lighted end seal RayClic-LE lighted end seal RayClic-S splice RayClic-PT powered tee RayClic-X cross tee RayClic-E end seal RayClic-PS powered splice XL-Trace heating cable RayClic-T tee Alternate connection kits Fig. 12 RayClic connection system 26 of 41 www.tycothermal.com (800) 545-6258 H55838 4/08

R Table 11 Connection Kits and Accessories for Aboveground Piping Connection kits Catalog number RayClic-PC RayClic-PS Pipe Freeze Protection and Flow Maintenance Design Use the following table for general piping, standpipe sprinkler piping, and greasy waste and fuel lines. Develop a bill of materials from the connection kits listed in this table. Description Power connection and end seal (RayClic-SB-04 pipe mounting bracket included) Powered splice and end seal (RayClic-SB-04 pipe mounting bracket included) Standard packaging Usage Heating cable allowance 1 1 1 per circuit 2 ft (0.6 m) 1 1 per circuit 4 ft (1.2 m) 1. Pipe Freeze Protection and Flow Maintenance 2. Roof and Gutter De-Icing 3. Surface Snow Anti-Icing MI RayClic-PT FTC-P 2 Powered tee and end seal (RayClic-SB-04 pipe mounting bracket included) Power connection and end seal Note: FTC-P is required for circuits requiring 40 A circuit breakers. 1 1 per circuit 6 ft (1.8 m) 1 1 per circuit 3 ft (0.9 m) 4. Surface Snow Anti-Icing ElectroMelt RayClic-S Splice 1 As required 2 ft (0.6 m) RayClic-T Tee kit with end seal 1 As required 3 ft (0.9 m) 5. Freezer Frost Heave Prevention RayClic-X Cross connection to connect four heating cables 1 As required 8 ft (2.4 m) FTC-HST 3 Low-profile splice/tee 2 As required 3 ft (0.9 m) RayClic-LE Lighted end seal (RayClic-SB-04 pipe mounting bracket included) 1 Alternate end seal 2 ft (0.6 m) 6. Floor Heating 7. Technical Data Sheets RayClic-E Extra end seal 1 Additional end seal 0.3 ft (0.1 m) 8. Engineering Specifications 9. Index H55838 4/08 (800) 545-6258 www.tycothermal.com 27 of 41