Install Instructions

15
Slab Sensor
STEP 3.9
Use a digital multi-meter to measure the resistance between the conductors of the mat/cable power leads again.
Record these resistances in Table 3 under “After mat/cable is secured in place”.
STEP 3.10
Feed the power leads through the conduit into the junction box, leaving at least 6 inches of free lead length. Secure
the heating cable and splice so that they will not be pulled into the conduit.
Insert a generous amount of electrical conduit sealant into the
conduit end around the power leads to prevent water entry
STEP 3.11
If a slab sensor is being installed, place the sensor socket according
to the instructions. Secure and seal it to the conduit installed earlier.
It should be located halfway between heating cables and in an area
that is recommended by the sensor manufacturer. Make sure the top
of the sensor will be flush with the surface of the finish layer. Make
sure it is protected with a cap or seal.
STEP 3.12
Take a photo of the mat/cable installation. This can be very helpful
later for utility work, changes to the site, etc. to avoid possible
damage. Keep the photos with this installation manual.
SPECIAL APPLICATIONS
STEP 3.13
Stairs: If you are installing ProMelt Mat onto stairs, carefully cut the tape holding the heating cable. If installing
ProMelt Cable, skip the previous step. Secure a single run of cable to the side of a riser. Lay 3 or 4 runs of cable on the
tread area as needed and continue up each stair. Follow these guidelines:
Lay cable no greater than 3 inches from the front edge of the finished tread. Otherwise this edge may not
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snow melt properly.
Lay cable no less than 6 inches from the side edges of the finished tread.
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Account for future hand railings that could be mounted onto the tread, especially in the middle of a long tread •
if required. Use a marker or indicate on drawings where the railing may be installed safely later.
Avoid pinching or sharply bending the cable. At the corner of the riser and tread, keep a minimum 1-inch
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radius bend, but secure it flat enough that the surface concrete or pavers will not pinch the cable.
Do not install the mat/cable on or under non-masonry stairs such as wooden or composite construction.
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ProMelt Mat on stairs ProMelt Cable on stairs