KING SCM User Manual

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INSTALLATION AND MAINTENANCE

SAFTEY INFORMATION

SC/SCM Snow Melt

Cable and Mats

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ELECTRIC SHOCK OR FIRE HAZARD

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King’s Snow Melt Systems are great solutions to stay ahead of the snow and ice when winter arrives. On-demand snow melt improves the
safety of driveways, sidewalks, stairs and other outdoor foot-traffic areas, keeping them free from the dangers of ice.

SCM Series Mats, provide pre-fabricated mats at 50W/SqFt (3” spacing) that can be rolled out prior to the concrete slab being poured.
Whether you are heating concrete, asphalt or pavers the SCM will keep your area clear and safe to walk on.

SC Series Cable offers a custom in-concrete layout solution to snow and ice build-up, and can be installed to fit any individual application.
Cable can be spaced to allow between 35W/SqFt – 50W/SqFt (3” or 4”spacing) depending on the application.

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READ CAREFULLY

performed by qualified personnel, in accordance with local codes and standards.

Read these important warnings and all installation instructions prior to installation. Failure to do so can result in fire, electrical shock, property
damage, personal injury and/or death.

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KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: [phone] · www.king-electric.com

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It is important to read these instructions carefully before installing the SC Snow Melt System. Installation must be

Installation must be performed by qualified personnel, in accordance with local codes and standards.

For outdoor installation only.

Never cut the heating cable.

Extreme care must be used to ensure the SC cables or SCM mats are not damaged when using sharp tools, wheelbarrows, heavy machinery
and paving equipment, shovels rakes, or other equipment. Avoid walking on the cable/mats during installation.

It is not recommended to install the SC cables or SCM mats with a controller that does not contain an integrated temperature limiter.

The SC cable or SCM mats must be embedded in mortar or a mortar mixture, concrete, sand or a similar material; The heating cable con­nection and at least 1’ of the power lead must be embedded in the paved surface.

NEVER pull any of the heating cable or factory splices into any conduit. Only the remaining power lead should be run through the conduit.

The power lead may be extended or cut shorter if required, but never removed from the heating cable. (Continued on page 2)

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Do not install SC cable in such a way that the heating cables touch, cross, overlap, or place heating cable closer than 2 inches from another
heating cable power lead cable, underground cable or piping to keep from overheating them.

Always keep ends of the power leads dry before and during installation.

Remember to always measure, verify and record the actual resistance throughout the installation process:

1. Prior to installation

2. After installation

3. While Puring Concrete

4. Final Commissioning

Record these values on the SC Cable / SCM Mat Testing Log on page 19 , failure to do so will void the warranty.

Measure the resistance between the two live conductors as well as the resistance between each conductor and the ground

wire.

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KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: [phone] · www.king-electric.com

King Manufacturing recommends using a mega-ohm meter to test the insulation resistance.

Never attempt to repair a damaged cable. Contact the manufacturer for assistance.

Remember to check that the supply voltage matches the voltage required for your particular SC/SCM product.

Remember to place the labels as instructed in this manual.

Always shut power off at the breaker before installing or servicing this product.

Always provide a ground fault circuit protector (GFCI) for the snow melting system. This may be at the circuit breaker or the

control.

Always install in accordance with all local codes and the National Electrical Code (ANSI/NFPA 70 especially Article 426) and

Section 62 of the Canadian Electrical Code (CEC) Part 1.

Please consult King Electrical Mfg. Co. for any other questions, concerns or advice.

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Typical SC/SCM Installation Coverage Configurations

Driveway with full coverage near garage and "tire track" coverage down driveway

SX Mats and Cables can be used in combination to fit a variety of areas

KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: [phone] · www.king-electric.com

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SC Mats and Cables can be used in combination to fit a variety of areas

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SURFACES THAT CAN BE INSTALLED UNDER

SC embedded in Concrete SC embedded in Asphalt

KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: [phone] · www.king-electric.com

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SURFACES THAT CAN BE INSTALLED UNDER (Continued)

SC under Brick Pavers

SC under Tile

INSTALLATION

Installing the Heating Cable/Mat

Determine general areas where you want to install SC/SCM cable/ mat

Applications include driveways, walkways, patios, permanent ramps, masonry steps and benches, shipping docks, under garage door seals and
more. Anywhere outdoors in residential or commercial locations where snow or icE accumulate may be considered, as long as SC/SCM is
completely embedded in concrete, sand, thick mortar bed, or asphalt.

SC/SCM cable/mat cannot be installed indoors, in industrial locations, or areas with hazardous classifications. It cannot be used for pipe freeze
protection or roof/gutter snowmelt. Do not install the SC/SCM cable/mat on or under non-masonry stairs or decks such as wooden or composite
construction.

If installing SC/SCM under brick pavers we recommend installing cables under entire area. This is because non-heated area will receive melt
water that may re-freeze under the pavers causing the pavers to heave in the non-heated area. (If you have an application you are unsure of,
please consult factory for advice.

KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: [phone] · www.king-electric.com

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SAVE THESE INSTRUCTIONS

INSTALLATION INSTRUCTIONS

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READ ALL WIRE SIZING, VOLTAGE REQUIREMENTS AND SAFETY

DATA TO AVOID PROPERTY DAMAGE AND PERSONAL INJURY

DANGER

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INSTALLATION

Make a drawing and measure the area where you want snow melting to occur.

Eliminate those areas where SC/SCM cannot be installed, keeping in mind the following obstructions and allowances.

 Cable/Mat cannot be laid within 6” of the edges of slabs. In asphalt, this is increased to 12” from the edge where no curb is provided.

 Avoid crossing expansion joints in a slab, unless proper technique and protection steps are followed

 Avoid placing the heating cable any closer than 2 inches from other items such as underground cable or piping to keep from overheating

them.

 Allow at least 2” between adjacent cables, but not more than 4”, between adjacent cables or sections of a mat where the mat mesh is cut

and turned to fill the area.

 Cable/Mat must be laid in such a way that the surface will not have other obstructions placed on top, capturing heat or allowing potential

damage from mounting brackets, bolts, or similar (pedestals, support columns, walls, or light posts).

Precautions:

 The heating cable and factory splices of FC/FCM cable/mat must be completely embedded in the concrete, sand, or asphalt. Never try to use

up excess heating cable in surrounding soil, walls, or other unprotected applications.

 Never overlap the heating cable on itself or place heating cable closer than 2” from other heating cable.

 Only the power lead may exit this area. It will be pulled through conduit to protect it up to a junction box

NEVER pull any of the heating cable or factory splices into any conduit.

WARNING

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THE HEATING CABLE CANNOT BE CUT TO LENGTH. Order the correct size cable or mat to fit the area. Modifying the heating cable is not
allowed and may lead to overheating, damage, and fire hazard.

Determine junction box (s) location:

It is important to locate the junction box(s) as close as possible to where the SC/SCM cable/mat power leads will terminate, while making sure the
cable (s) and/or mat (s) you select fill the area correctly.

It is best to locate junction boxes on a wall indoors and within the distance of the power leads on the cable/mat. SC/SCM cable/mat comes
standard with 20’ long power leads.

If a junction box must be located outdoors, it is recommended to be installed above grade and to be properly listed for rain tight use outdoors. If
it must be installed at or below grade, use properly listed watertight items and follow box manufacturer guidelines for protection and connection

KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: [phone] · www.king-electric.com

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