HEATIZON.COM
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6. Area Preperation
Ensure that the substrate has been properly compacted and drainage has been satisfactorily
addressed. For substrate preparation and concrete recommendations please refer to page 1 of
this manual for “A FEW CONCRETE SUGGESTIONS”. Other site preparation recommendations
include, cleaning up the site to eliminate objects that may damage the heating element prior
to, during and after the installation.
Use the site sketch to transfer the following information to the site.
• Identify and mark the location of any and all joints if the heating cable or mat will be
installed into a new asphalt or a concrete slab, Do not forget to use jumpers for any and all
joints.
• Determine the location of the starting points of the heating element and the exit points for
the cold leads. Connections must be embedded in asphalt, concrete, or other cementitious
material.
• Determine the location of the activation device. If using an in-slab temperature or
temperature/moisture sensor, mark the location for the activation device and install a
conduit sleeve for the lead wire to the in-slab sensor. An automated activator is the “eyes
and ears” of the snow melt system. It is important that it be installed in a location that
will allow it to turn the snow melt system “on” when it is needed and “off” when it is not
needed. Verify the proper location has been selected for the activation device. Manual
activators require human action—as a result they should be placed in a location that is
convenient and easily accessible.
5. Required Tests (First)
Insulation Resistance with Megohmmeter
Before, during, and after installation, it is necessary to measure
the insulation resistance between the heating conductor and the
protective grounding screen with a 500VDC Megohmmeter. This
measured value may not be less than
0.5 Megohms
. Connect the
voltage lead to one of the inner cold lead conductors and the earth
lead to the cold lead outer grounding braid. Test resistance at 500VDC.
Record the measured values in the certificate of warranty.
Cable Conductor Resistance with Multimeter
Before, during, and after installation, it is necessary to measure the
resistance of the heating circuit with a multimeter. The measured values
should be equal -5% to +10%.
Connect one meter lead to the one cold lead inner conductor and the other
meter lead to the other cold lead inner conductor. Take the Ohm
reading. Record the measured values in the certificate of warranty.
Be sure to check product label for proper resistance, operating
amperage, operating voltage, cable length and other important
information when performing tests.
