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7. Installation
Concrete Preparation:
Loose heating cable not in a mat may be secured in place by landscape
stakes and plastic wire ties, welded wire fabric and plastic wire ties or tape, or pre-punched
steel straps purchased from your Heatizon Distributor or Representative. Do not compress
or strain the cable, run heavy machinery, equipment, or vehicles over it. Be careful to avoid
stepping on the cold section factory connection of the cable. Consult the NEC or CEC for grounding
requirements of rebar or welded wire fabric for concrete installations. When working with concrete or
asphalt joints, design the layout so each section of the slab is covered and the cable crossing of joints
are minimized. See page 15 for example layouts. Mats should be installed in evenly spaced runs per
the system design and plan. Sleeve hand rail posts to avoid drilling or penetrations in the slab after the
pour.
• Two Pour Concrete:
In this installation a concrete slab is already present and an additional slab will
be poured on top. The heating cable can be layed out using welded wire fabric and zip ties or tape,
or pre punched steel strapping for loose cable installations not in a mat form. Cold leads should
be sleeved for this installation following conductor
fill and size requirements in the NEC and CEC. The
heating cable portion and cold connection can
not pass into the conduit sleeve. Jumpers must be
used to protect the heating cable where joints are
present on the concrete slab below as well as in the
new slab.
• Single Pour Concrete:
In this installation the
aggregate or concrete base is prepared first. Once
the base is prepared the installer can begin by
placing a grid of welded wire fabric or rebar in
preparation for the heating cable. The heating
cables or mats can be attached to the welded
wire fabric with plastic zip ties or tape. Take note
of layout examples on page 15 for installations
requiring jumpers. Jumpers must be used for any
and all joint cable crossings. Do not cross expansion
joints. Once the heating cable is installed, place
chairs or concrete dobies under the rebar or welded
wire fabric grid to bring the heating cable within
2” to 3” of the surface. Cold leads can be sleeved
following conductor and fill size requirements in the
NEC and CEC. The heating cable portion and cold
connection can not pass into any conduit sleeve.
Asphalt Preparation:
Loose heating cable not in mat form may be secured in place by landscape
stakes and plastic wire ties, welded wire fabric and plastic wire ties or tape, or pre-punched steel straps
purchased from your Heatizon Distributor or Representative. Cables in a mat can be layed out in the
configuration desired directly on the surface. Do not compress or strain the cable, run heavy machinery,
equipment, or vehicles over it. Be careful to avoid stepping on the cold section factory connection of
the cable. Consult the NEC or CEC for grounding requirements of rebar or welded wire fabric for asphalt
installations. When working with concrete or asphalt joints, design the layout so each section of the slab
is covered and the cable crossing of joints are minimized. See page 15 for example layouts. Cables or
mats should be installed in evenly spaced runs per the system design and plan. Sleeve hand rail posts
to avoid drilling or penetrations in the slab after the pour.
