SRP Pre-assembled Self-regulating Cable
SRP126
SRP126
SRP126
SRP126
SRP126
SRP126
SRP126
Installation, Operation and Maintenance Instructions
IMPORTANT: Save These Instructions!
Cable Construction
DESCRIPTION:
SRP self-regulating pre-assembled 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.
SRP CABLE FEATURES:
- Rated 6 watts/foot at 40º F, (4º C) for pipe freeze protection.
- Rated 8 watts/foot at 32º F, (0º C) for roof and gutter deicing.
- 30 inch power lead with grounded plug.
- Pre-terminated with 30 inch 120V cord with plug and end
splice.
- Suitable for use on metal and plastic pipes.
- Suitable for metallic and nonmetallic gutters and downspouts.
- Cable will not overheat or burnout when overlapped.
- 16 gauge heating cable bus wire.
- 2 year warranty.
SRP CABLE KIT CONTAINS:
• SRP pre-assembled electric heating cable
• Roof and gutter caution labels
• Pipe trace caution labels
Model Volts
-6 120V
-12 120V
-18 120V
-24 120V
-50 120V
-75 120V
-100 120V
Pipe
Rating
36 watts
72 watts
108 watts
144 watts
300 watts
450 watts
600 watts
Deicing
Rating
48 watts
96 watts
144 watts
192 watts
400 watts
600 watts
800 watts
Length
6 ft.
12 ft.
18 ft.
24 ft.
50 ft.
75 ft.
100 ft.
CAUTION:
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.Not for use with an extension cord.
5. 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.Do not cut or alter the length of the cable in any way. Any
alteration may result in electrical shock or fire.
8.Post warning labels supplied with the cable at the power supply
and along the pipe on the outside of the insulation.
9.Do not bend the cable to less than a 1/2” radius.
10.Do not Install cable on shingle roofs in freezing temperatures;
as this may cause damage to the shingles.
11.Cables are intended for freeze protection of water pipes only.
Not intended for use with other liquids or hazardous materials.
12. For installation in accessible areas only.
Warranty Information:
King Electrical Mfg. Company will repair or replace, without charge to the original owner, any heating cable found to be defective or malfunctioning within the 2 year warranty.
In Case of Product Failure: Contact King Electrical Mfg. Co. at 800.603.5464. The owner will be required to provide, within the designated warranty period, the following
information: model number, date of purchase, and a complete description of the problem encountered with product. Upon receipt of the aforementioned, the company will
reply to the owner within a period not to exceed fifteen (15) working days, and will provide the action to be taken by owner. Terms: This warranty requires the owner or his
agent install the equipment in accordance with the National Electrical Code, any other applicable heating or electrical codes and the manufacturer's installation instructions. It
further requires that reasonable and necessary maintenance be performed on the unit. Failure of proper maintenance by owner will void the warranty in its entirety. The
company is not liable for any actions it deems to be abuse or misuse of the product. The customer shall be responsible for all costs incurred in the removal or reinstallation of
products, including, but not limited to, labor costs, and shipping costs incurred to return products to King Manufacturing. At their discretion, King Manufacturing will decide to
either repair or replace the product, with no charge to the owner, with return freight paid by King. The Company shall not be liable for consequential damages arising with
respect to the product, whether based upon negligence, tort, strict liability or contract. No other written or oral warranty applies, nor any warranties by Representatives,
Dealers, Employees of King or any other person. King Manufacturing can be contacted by phone at 206.762.0400, fax 206.763.7738 or website www.king‐electric.com.The
company's minimum liability shall not in any case exceed the list price for the product claimed to be defective.
www.king-electric.com 1
Rev 8.28.12
Heating Cable Selection Table for Pipe Freeze Protection
Pipe Type* 5 ‘
½”
1”
1 ½”
2”
2 ½”
M A B C D E E E E E E F F F F F G G G G G
P A B C D E E E E E F F F F F G G G G G G
M A B C D E E E E E E F F F F F G G G G G
P B B C D E E E E E F F F F F G G G G G G
M A B C D E E E E E E F F F F F G G G G G
P B C D E E E E F F G G G G G - - - - - M A B C D E E E E E F F F F F F G G G G G
P B C E E E F F G G G G - - - - - - - - M A C C D E E E E E F F F F F G G G G - P B D E E F F F G G - - - - - - - - - - -
A
SRP12-6
10’ 15’ 20’ 25’ 30’ 35’ 40’ 45’ 50’ 55’ 60’ 65’ 70’ 75’ 80’ 85’ 90’ 95’ 100’
B C D E F G
SRP12-18 SRP12-24 SRP12-50 SRP12-75 SRP12-100 SRP12-12
* Type: M = Metal Pipe, P = Plastic Pipe
- Add 1 foot to the cable length for each valve or spigot.
- Chart is based on the lowest outside temperature of 0º F (-18º C) with a minimum of
½” thick insulation. Use 1” insulation for protection in temperatures down to -20º F (-29º C).
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.
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.
ATTACH THE HEATING 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. For spiral tracing, install the cable as shown in Figure 2.
4. Install the extra heating cable required for valves, flanges,
etc.
5. When applying spiral tracing, begin by suspending a loop of
cable every 10 feet as shown in Figure 2. To determine the
loop length, divide the length of pipe length and multiply by
10.
6. For example, if you are using a 50 ft heating cable on a 40
foot pipe, leave a 12 foot loop of heating cable at every 10-foot
section of pipe. Grasp the loop in its center and wrap it around
the pipe. Even out the distance between spirals by sliding the
wraps along the pipe. Use glass tape (SRK03) to secure the
center of the loop to the pipe.
7. Fasten the heating cable to the pipe at 1 foot intervals using
SRK03 fiberglass tape or nylon cable ties. Do not use vinyl
electrical tape, duct tape, metal bands or wire.
8. If there is excess cable at the end of the pipe, double
remaining cable back along the pipe.
www.king-electric.com 2
Rev 8.19.12
Figure 1: Straight Tracing
Figure 2: Spiral Tracing
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