ProMelt Installation Manual

PM-HSC5 Slab Sensor

STEP 3.9

Use a digital multi-meter to measure the resistance between the conductors and ground wire 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 included with the sensor. 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

snow melt properly.

• Lay cable at least 6 inches from the side edges of the finished tread.

• 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

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.

ProMelt Mat on stairs ProMelt Cable on stairs