Install Instructions

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Phase 1: Designing the System
STEP 1.1
Determine general areas where you want to install ProMelt Mat/Cable 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 ProMelt is
completely embedded in concrete, sand, thick mortar bed, or asphalt.
ProMelt Mat/Cable cannot be installed indoors, in industrial locations, or areas with hazardous classifications. It cannot
be used for gutter or pipe freeze protection or roof snowmelt. Do not install the mat/cable on or under non-masonry
stairs or decks such as wooden or composite construction.
If installing ProMelt under brick pavers, we recommend installing cables under the entire area. This is because the 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 call the factory for advice.
STEP 1.2
Make a drawing and measure the area where you want snow melting to occur. Eliminate those areas where
ProMelt cannot be installed, keeping in mind the following obstructions and allowances:
Mat/Cable cannot be laid within 6 inches of the edges of slabs. In asphalt, this is increased to 12 inches from
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the edge where no curb is provided.
Avoid crossing expansion joints in a slab, unless proper technique and protection steps are followed (see Step
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3.14).
Avoid placing the heating cable any closer than 2 inches from other items such as underground cable or piping
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to keep from overheating them.
Allow at least 2 inches between adjacent cables, but not more than 4 inches, between adjacent cables or
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sections of a mat where the mat mesh is cut and turned to fill the area.
Mat/Cable must be laid such that the surface will not have other obstructions placed on top, capturing heat or
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allowing potential damage from mounting brackets, bolts, or similar (pedestals, support columns, walls, light
posts, or similar)
Also, consider the following precautions:
WARNING: THE HEATING CABLE CANNOT BE CUT TO LENGTH. Order the correct size mat or cable to fit the
area. Modifying the heating cable is not allowed and may lead to overheating, damage, and fire hazard.
The heating cable and factory splices of ProMelt Mat/Cable must be completely embedded in the concrete,
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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 inches from other heating cable.
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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.
STEP 1.3
Determine where junction box(es) may be placed to receive the ProMelt Mat/Cable power leads. This is important to
ensure the mat(s) and/or cable(s) you select fill the area correctly and with the best connection locations.
It is best to locate junction boxes on a wall indoors and within the distance of the power leads on the mat/cable. ProMelt
mat/cable comes standard with 20-foot long power leads, but may be custom ordered up to 50 feet long if necessary.
If a junction box must be located outdoors, it is recommended it be installed above grade and 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 seals.
See typical installations on previous page.