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SRK08
User Manual
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KING SRK08 User Manual

SRK08 GFEP 120V Plug-in Power Connection Kit
Item
Qty
Description
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2
B
2
C
2
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1
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2
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Installation, Operation and Maintenance Instructions
IMPORTANT: Save These Instructions!
Warning labels for pipe trace Warning labels for gutter ice melt. Cable ties
Black heat shrink tube (1” dia. x 8” length) Mastic strips (1” width x 1-1/2” length) Black heat shrink tube (1/2” dia. x 1” length) Black heat shrink tube (1/8” dia. x 1” length)
Insulated bus wire crimp connectors Un-insulated ground braid crimp connector
Black cloth tape (1” width x 6” length) Black heat shrink tube (3/4” dia. x 5” length) Woven braid sleeve ( ½” dia. x 4” length) Black heat shrink cap ( ½” dia. x 1-1/4” length)
Rev 11.04.12
DESCRIPTION:
SR self-regulating heating cables are designed for a variety of pipe freeze protection as well as roof
and gutter deicing applications. The heat output (wattage)
increases and decreases based on the temperature, so the cable adjusts automatically to varying climate conditions. This unique feature ensures maximum energy efficiency by increasing the heat output only when it is needed. No thermostat is required.
DESCRIPTION
The SRK08 GEFP plug-in power connection kit is to be used with King SR self regulating heating cables only. The kits are not approved to be used with other brands of heating cable. The kit contains enough material for making one 120 volt plug-in power connection and one end seal. King SR cables are approved for both pipe freeze protection and roof and gutter deicing applications. The kit is to be used with copper wire only, do not use aluminum power supply wires
ADDITIONAL MATERIALS REQUIRED
• UL Listed weatherproof junction box when used outdoors with a weatherproof cover for the plug.
• The junction box requires a 120 volt receptacle for the GFEP device to plug into.
• For heating cable with no outer-jacket, a metallic junction box must be used to ensure proper grounding.
• The application may require additional accessories; for example, SRK03 application tape for pipe applications or SRK13
roof clips and/or SRK15 downspout hangers for roof and gutter deicing.
TOOLS REQUIRED
• Adjustable wrench or pliers, needle nose pliers, diagonal cutters, utility knife, screwdriver, propane torch or heat gun, crimp tool.
WARNING
Fire and shock hazard. Improperly installed heating cable can cause electrical shock, arcing, and fire. Carefully follow all the instructions provided read the cautions and warnings.
1.Heating cables must be installed in compliance with the national electric code (NEC) in addition to state, provincial and local codes. Check with your local inspector for specific code requirements (or regulations or standards) in your area.
2.Save these instructions and transfer them to future owner(s).
3.Never install on pipes that could potentially exceed 150º F, (65º C).
4.Do not substitute components or use or use vinyl electrical tape.
5. Not for use with indoor pipes. Cable should not run through the building walls, ceilings or floors.
6.For safety, King recommends that all heating cables are placed on a Ground Fault Equipment Protection (GFEP) circuit. Consult your local electrical inspector to determine the specific requirements in your area.
7.The black heating core is conductive and can short. It must be properly insulated with heat shrink tubing.
8.Keep components and heating cable ends dry during installation.
9.Damaged bus wires can overheat or cause an electrical short. Do not energize cable if the bus wires are damaged.
10.Do not break the braid or bus wire strands when stripping the jacket or conductive core.
11.Bus wires will short if they come in contact with each other. Never spice the bus wires together, they must remain separate.
12. Heat-damaged components can short, the use a heat gun is preferred. Use a torch with a soft, yellow ,low-heat flame, not a high heat blue focused flame. Keep the flame moving to avoid overheating, blistering, or charring the heat-shrinkable tubes. Avoid heating other components and replace any heat damaged parts prior to energizing the cable.
13.Use only fire-resistant insulation materials such as fiberglass wrap.
14. Do not twist he cable during installation.
15.De-energize all supply power circuits before installation or servicing.
16. Do not embedded the heating cable.
17.Post warning labels supplied with the cable at the power supply and along the pipe on the outside of the insulation.
18.Do not bend the cable to less than a 1/2” radius.
19.Do not Install cable on shingle roofs in freezing temperatures; as this may cause damage to the shingles.
20.Cables are intended for freeze protection of water pipes only. Not intended for use with other liquids or hazardous materials.
21. Install cable in accessible areas only.
Caution: Charring or burning the heat-shrinkable tubes in this kit can produce fumes that may cause eye, shin, nose, and
throat irritation. Ensure proper ventilation during installation to minimize this health risk.
Important: For the warranty to be valid, installer must comply with all requirements outlined in these guidelines. All design
information provide her is based upon a standard installation with heating cable fastened to an insulated pipe.
Electrical codes: Article 427 of the National Electrical Code and Section 62 of CAN/CSA-C22.1, Canadian Electrical Code
govern the installation of King SR heating cable for pipe freeze protection.
Rev 11.04.12
SR Heating Cable Selection and Design
Lowest
Air Temp.
Insulation
Thickness
1/2”
3/4”
1”
1-1/4”
1-1/2”
2”
2-1/2”
3”
4”
6”
8”
0ºF
(-18ºC)
1/2”
3
3 3 3 5 5 5 5 8 8
10
1”
3 3 3 3 3 3 3 5 5 8 8
1-1/2”
3 3 3 3 3 3 3 3 5 5 5
2”
3 3 3 3 3 3 3 3 3 5 5
-20ºF
(-29ºC)
1/2”
3 5 5 5 5 5 8
8
10
10
*
1”
3 3 3 3 3 5 5 5 8
8
10
1-1/2”
3 3 3 3 3 3 3 5 5 8 8
2”
3 3 3 3 3 3 3 3 5 5 8
-40ºF
(-30ºC)
1/2”
5 5 5 5 8
8
10
(2) 8
(2) 8
(2) 10
*
1”
3 3 3 5 5 5 8 8 8
10
(2) 8
1-1/2”
3 3 3 3 3 5 5 5 8
8
10
2”
3 3 3 3 3 3 3 5 5 8 8
3”
3 3 3 3 3 3 3 3 3 5 5
Lowest
Air Temp.
Insulation
Thickness
1/2”
3/4”
1”
1-1/4”
1-1/2”
2”
2-1/2”
3”
4”
6”
8”
0ºF
(-18ºC)
1/2”
3 5 5 5 8 8 8
10
(2) 8
(2) 10
*
1”
3 3 3 5 5 5 5 5 5 8 8
1-1/2”
3 3 3 3 3 3 5 8 8
8
10
2”
3 3 3 3 3 3 3 5 5 8 8
-20ºF
(-29ºC)
1/2”
5 5 8
8
10
10
(2) 8
(2) 8
(2) 10
*
*
1”
3 3 5 5 5 8 8
8
10
(2) 8
(2) 10
1-1/2”
5 5 5 5 5 5 5 8 8
10
(2) 8
2”
3 3 3 3 3 5 5 5 8
8
10
-40ºF
(-30ºC)
1/2”
8 8 8
8
10
10
(2) 8
(2) 10
* * *
1”
5 5 5 8 8
8
10
10
(2) 8
*
*
1-1/2”
5 5 5 5 5 8 8
8
10
(2) 8
(2) 10
2”
5 5 5 5 5 5 5 8 8
10
(2) 8
3”
3 3 5 5 5 5 5 5 5
8
10
Use table 1 to select the heating cable size for insulated metal pipes and use table 2 to select heating cables for insulated plastic pipes. Read across the table to find the pipe size, then drop down the column to the row corresponding to the lowest design air temperature column for the application and chose the thickness of the insulation that will be used. The cell that intersects will give the power (watts/ft.) of the cable required and it may also have a number (2) in the cell which represents using 2 cables. Run the cable straight along the bottom of the pipe. If
two cables are required, attach them at the 4 and 8 o’clock positions as shown in figure 1 page 4. Spiral tracing the
cable is not recommended as it is labor intensive.
Table 1' – SR cable selection for metal pipes (w/ft.)
Table 2' – SR cable selection for plastic pipes (w/ft.)
' The tables are based on using fiberglass insulation or equivalent while maintaining a 40ºF (4ºC) pipe
temperature with a 10% safety factor and 20 mph wind speed.
* Contact King for the proper cable selection
Rev 11.04.12
Model
Volts
Watt/ft
Maximum
Single Run Length
SR123
120V
3 w/ft
325 ft. (99M)
SR125
120V
5 w/ft
270 ft. (82M)
SR128
120V
8 w/ft
210 ft. (64M)
SR1210
120V
10 w/ft
180 ft. (55M)
Volts
Start up
Temp.
Circuit
Breaker*
SR123
3w/ft.
SR125
5w/ft.
SR128
8w/ft.
SR1210
10w/ft.
120 V
50ºF
(10ºC)
15 Amp
325 ft. (99M)
225 ft. (69M)
145 ft. (44M)
115 ft. (35M)
20 Amp
435 ft. (133M)
270 ft. (82M)
195 ft. (59M)
150 ft. (46M)
0ºF
(-18ºC)
15 Amp
230 ft. (70M)
155 ft. (47M)
100 ft. (30M)
85 ft. (26M)
20 Amp
305 ft. (93M)
205 ft. (72M)
130 ft. (40M)
110 ft. (34M)
-20ºF
(-29ºC)
15 Amp
205 ft. (63M)
135 ft. (41M)
90 ft. (27M)
75 ft. (23M)
20 Amp
275 ft. (84M)
180 ft. (55M)
115 ft (35M)
100 ft. (30M)
Circuit Breaker Protection and Cable Length Design for Pipe Freeze Protection
Table 3: Maximum Single Cable Length
The maximum length of a single cable run is noted in Table 3 and cannot be exceeded. If the application requires a longer cable run, then multiple cables and additional power circuits must be used.
Circuit protection depends on the length of cable required and the start-up temperature since the cable will draw more power (wattage) when cold. Multiple cables can be run from a single power circuit up to a maximum combined length as noted in Table 5. Larger amperage circuits breakers can handle longer combined cable lengths, but the maximum length for a single cable run does not change. The NEC requires the use of ground fault protection breakers for heating cable.
Table 5: Circuit Protection Per Combined Cable Length for Pipe Freeze Protection
Rev 11.04.12
SR Heating Cable Selection and Design (continued)
CALCULATE THE TOTAL HEATING CABLE LENGTH Cable length = A+B+C+D+E+F A Pipe length x number of cables B 4 ft. x number of valves C 2 ft. x number of flanges, supports, etc.
D 1 ft. for each power connection
E 2 ft. for each splice connection F 3 ft. for each tee connection = Total heating cable length (ft)
MAXIMUM CIRCUIT LENGTH ALLOWED
Ensure that your circuits do not exceed the maximum circuit length listed in Table 3, page 4. If necessary, use additional shorter circuits.
EXAMPLE
Pipe size: 2” metal pipe Lowest air temp: -20°F Insulation thickness: 1” Cable selection: (1) 5w/ft. (From table 1, pg 3) Pipe length: 80 ft. Valves: 2 Pipe supports: 12 Power connections: 1 Splice connections: 1
HEATING CABLE REQUIRED A Pipe length x number of cables 80 ft. x 1 = 80 ft. B 4 ft. x number of valves 4 ft. x 2 = 8 ft. C 2 ft. x number of flanges, supports, etc. 2 ft. x 12 = 24 ft.
D 1 ft. for each power connection 1 ft. x 1 = 1 ft.
E 2 ft. for each splice connection. 1 ft. x 1 = 1 ft. F 3 ft. for each tee connection 3 ft. x 0 = 0 ft. = Total heating cable length (ft) 114 ft.
Heating Cable Installation
GENERAL NOTES
1. Verify that the heating cable is the correct length, wattage and voltage prior to installation.
2. All welding, hydrostatic testing, and painting of the pipe should be completed before the heating cable installation.
3. The piping system must be inspected to ensure that it is clean, dry and has no sharp or jagged edges that could potentially damage the heating cable.
4. Do not install the heat tracing before completion of the entire piping system.
5. The cables must be installed a minimum of 10 inches away from wood or any other combustible materials.
6. The minimum cable bending radius is 1/2 inch.
STEP 1: PREPARE FOR INSTALLATION
1. Store the heating cable in a clean, dry place.
2. Perform a pressure test on the pipe prior to cable installation.
3. Remove any sharp surfaces on the pipe that could potentially damage the outer jacket of the heating cable.
4. Walk the pipe system and plan the routing of the heating cable on the pipe.
STEP2: CUT THE HEATING CABLE TO LENGTH
1. Cut the heating cable to length required. This can be done
before or after the cable is attached to the pipe.
2. Leave a minimum of 1 foot extra heating cable for connection to the supply power.
3. For splice and tee connections, leave a minimum of 1 foot for each section of heating cable.
4. King SR heating cable can to length without affecting its heat output per foot.
5. When splicing and terminating be sure to protect the cable ends from moisture, contaminants and mechanical damage.
Single Cable
Double Cable
Figure 1: Cable Placement on Pipe
STEP 3: ATTACH THE CABLE TO THE PIPE
1. Verify pipe to be traced is completely dry.
2. For straight tracing, install the heating cable on a the lower half of the pipe; for example, in the 4 o’clock or 8 o’clock
position as shown in Figure 1.
3. Install the extra heating cable as required for valves, flanges, etc.
4. Spiral tracing is not recommended as it is labor intensive.
5. If applying spiral tracing, begin by suspending a loop of cable every 10 feet as shown. To determine the loop length, divide the length of pipe length and multiply by
10.
6. Fasten the heating cable to the pipe at 2 foot intervals
using SRK03 fiberglass tape or nylon cable ties. Do not use vinyl electrical tape, duct tape, metal bands or wire.
7. If there is excess cable at the end of the pipe, double remaining cable back along the pipe.
Rev 11.04.12
Figure 2: SR Cable installation for Pipe Freeze Protection
Heating Cable Installation (continued)
STEP 4: INSTALL ACCESSORIES KITS
1. Install heating cable end seals, splices, tees, and power connection prior to energizing cable.
2. Use only the SR00 power connection kit, SRK10 splice and tee kit, SRK08 GFEP power connection kit and SRK 12 end seal kit.
STEP 5: CHECK FOR PROPER INSTALLATION
1. Before installing the thermal insulation, inspect the
heating cable to verify damage did not incur during installation including any thermal damage or other disturbance which may have occurred if exposed to a excessive heat.
2. Visually inspect all power connections, end seals, splices and tee connections.
STEP 6: INSTALL THE THERMAL INSULATION
1. The heat trace system requires weatherproofed thermal insulation installed as shown in Figure 32.
2. A minimum of at least 1/2" of preformed foam or equivalent thermal insulation must be used on all piping, including valves, joints, and wall penetrations.
3. Install the insulation on the piping as soon as possible to minimize the potential for mechanical damage after installation. .
STEP 7: FASTEN LABELS
1. Place caution labels so they are visible on the outside of the thermal insulation at 10 ft intervals on alternating sides of the pipe to indicate the presence of the electric heating cable system. Additional labels and fiberglass tape are available in SRK03 kit.
STEP 8: STARTING THE HEATING CABLE SYSTEM
1. Test per the “cable testing and maintenance”
section.
2. Check the circuit breaker to verify there is power to the cable.
3. Check standing water in the pipe after one hour, it should feel warm.
STEP 9: CABLE TESTING AND MAINTENANCE
1. Using a 2500-volts DC megohmmeter, check the resistance between both of the power prongs on the plug and the ground prong after installing the heating cable. Minimum reading should be 1000 megohms.
2. Record the original values for each circuit, and compare subsequent readings taken during regular maintenance to the original values.
3. If the readings fall below 1000 megohms, replace with a new cable or repair with the proper SRK accessory kit.
WARNING
Fire and shock hazard. Damaged heating cable can cause electrical shock, arcing, and fire. Do not energize a damaged heating cable. Immediately replace the cable or repair it with the proper SRK accessory kit.
Rev 11.04.12
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