Embedded Snow & Ice
Melting System
Installation Manual
CM1010 - 04-08-13
Before Installing
• Installation of this system must be made in accordance with
National Electrical Code Article 426 - Fixed Outdoor Electric
Deicing and Snow-Melting Equipment.
• Install all wiring in accordance with all national and local codes
pertaining to outside wiring.
• For installation under concrete only.
• Do not install this system under tarmac or other hot-pour surfacing materials.
• Do not incorporate any other outdoor electrical equipment in
any branch circuit which feeds this heating system.
• This system must be connected to an electrical branch circuit
incorporating a ground fault circuit interruper (GFCI) rated for
equipment protection.
• Heating mats must never be run through or accross expansion
joints.
• Do not run power leads, other electrical wiring or any other
material between the heating mats and the surfacing material.
• Special care must be taken to ensure that expansion joints do
not extend into the heating elements. Elements which are
damaged are shock and fire hazards. If possible, order elements sized so that the expansion joints can be cut between
the elements and leave one inch (2.5 cm) between the elements.
• WARNING: Ensure that adequate drainage is provided for
water runoff.
Components
• Calorique heating mats. Supplied by Calorique or authorized
distributor. See the following section for specifications of heating mats.
• Electrical control device. Supplied by Calorique, automatically turns the system on and off based on the temperature,
humidity, and presence of precipitation. This unit is a doublepole line voltage unit that meets National Electrical code
requirements.
• Overcurrent Protection. User / installer supplied. The circuit
breaker used with this sistem must have an overcurrent rating
of 30 amps and an integral GFCI rated for 30mA equipment
protection.
• Wiring and conduit. User / installer supplied. As required by
national and local code for outdoor installation.
• Junction boxes certified for use in outdoor, buried applications.
• Insulation (rigid foam or radiant barrier) User / installer supplied.
When using rigid foam, the insulation must have the following
properties:
• Walkways: one inch (2.5 cm) or thicker with a minimum
strength of 25 psi.
• Driveways and other vehicular traffic areas: two inches (5.0
cm) or thicker with a minimum strength of 60 psi.s
• Warning labels. Supplied by Calorique or authorized distributor.
• Element Labels. Mounted on the non-heating leads. Both
labels must remain in place as they supply necessary information about the elements. If the leads are cut to length,
the trimmed-off label must be reattached within two inches
(5.0 cm) of the end of the cable.
• Junction Box Label. Must be attached to the junction box.
• Stakes. Supplied by Calorique or authorized distributor.
• Warrantee Card. This card must be filled out and returned to
Calorique to ensure proper registration of the warrantee.
• Specification Sheet. Provides specifications for all heating
elements included with the system.
Heating Mat Specifications
Part Number Width Length Voltage Power Current
(inches) (feet) (volts) (watts) (amps)
SLB22-192W240V-2 22 2 240 192 0.8
SLB22-384W240V-4 22 4 240 384 1.6
SLB22-576W240V-6 22 6 240 576 2.4
SLB22-768W240V-8 22 8 240 768 3.2
SLB22-960W240V-10 22 10 240 960 4.0
SLB34-288W240V-2 34 2 240 288 1.2
SLB34-576W240V-4 34 4 240 576 2.4
SLB34-864W240V-6 34 6 240 864 3.6
SLB34-1152W240V-8 34 8 240 1152 4.8
SLB34-1440W240V-10 34 10 240 1440 6.0
SLB46-384W240V-2 46 2 240 384 1.6
SLB46-768W240V-4 46 4 240 768 3.2
SLB46-1152W240V-6 46 6 240 1152 4.8
SLB46-1536W240V-8 46 8 240 1536 6.4
SLB46-1920W240V-10 46 10 240 1920 8.0
System Layout
Figure 1. Heating elements wired in parallel.
Layout the system based on the following:
Residential Sidewalks and walkways
• In most cases, one heating mat is all that is needed to melt
snow and ice from the width of a standard residential sidewalk
or walkway.
Figure 2. Cross section of system (sand base not shown).
• More than one length of heating mat may be required to heat
the entire length of the sidewalk or walkway. In this case, you
will need to wire the mats according to Figure 1.
Residential Driveways
• A typical residential driveway is effectively kept ice free by
installing one length of heating mat underneath only the area
where automobile tires travel. This helps reduce power consumption and energy cost.
Figure 3. Typical residential driveway.
• For complete coverage of driveway surfaces, use multiple
heating mats arranged next to each other.
• More than one length of heating mat may be required to heat
the entire length of the driveway. In this case, you will need to
wire the mats according to Figure 1.
Industrial / Commerical Driveways, Roadways and
Walkways
• For complete coverage of surfaces, use multiple heating mats
arranged next to each other.
Figure 4. Commercial walkway.
• More than one length of heating mat may be required to heat
the entire length of the sidewalk or walkway. In this case, you
will need to wire the mats according to Figure 1.
Insulation
Heating Mat
Concrete
Surface Material (optional)
Heating Mats
Junction
Box
Conduit
Heating Mats
Installation
1. Using an accurate ohm meter, test each element to ensure
that it is within the limits shown on the specification sheet.
2. Grade area to be heated as normal. Remember to grade down
an extra amount equal to the thickness of the insulating material used.
3. Lay insulation in those areas which will be heated.
4. Place heating mats on the insulation per the layout you prepared.
• Push the supplied stakes through the grommets on the
heating elements, into the sand or insulation base below.
This will secure the elements while the concrete is being
poured.
• The heating mats must run flat and smooth on the insula-
tion.
• Do not crease, fold or otherwise alter the shape or length of
the heating units.
• Ensure that elements are laid out with “this side up” label
facing up.
5. Pour the concrete as normal.
• Take extra care not to dig into the heating mat surface or
otherwise damage the heating mats.
• Ensure that the heating mats to not fold when surfacing
material is poured.
• Do not use the heating mats to accelerate the curing of the
surfacing material as this may lead to cracks and other
structural defects.
• Crown or pitch the driveway normally to direct melt water
flow.
6. Prepare the face of the concrete normally, including the cutting
of expansion joints. You may add stone, tile, texture, or other
surfaces to the concrete in accordance with the manufacturer’s
instructions.
When cutting expansion joints, ensure that the blade does not
contact the heating elements.
7. Confirm the resistance of the system by performing another
ohm check with an accurate ohm meter and comparing it
against the figures provided on the specification sheet. This
check ensures that no damage has occurred to the elements
during the installation process.
8. Make electrical connections between the heating mats and the
branch circuit wiring per the layout you prepared, making sure
to take into account all applicable electrical regulations.
Operation
The Calorique Embedded Snow & Ice Melting System is easy
to operate. Simply turn on the system during winter months
and the control will automatically activate the mats when it
detects moisture and the temperature drops below 38°F (3°C).
For more detailed information about the control, see its separate manual.
Copyright © 2002 Calorique, Ltd.
All rights reserved.
Printed in USA
Calorique, Ltd.
2380 Cranberry Highway
West Wareham, MA 02576
USA
+1 508.291.4224 voice
+1 800.922.9276
+1 508.291.2299 fax
www.calorique.com
info@calorique.com
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