nVent RAYCHEM WinterGard Cable 230V Mode D'emploi page 15

Ramp heating with top layer of stone or paving slabs
60-80 mm
30-50 mm
Ramp heating embedded in concrete / cement screed Top layer asphalt
Concrete / cement
screed ground
If the heating cable can not be fixed to a reinforcement mesh, the installer should use the plastic spacer (for asphalt
metal VIA-SPACER) or other fixing method to keep the cable spacing consistent.
Slab preparation & reinforcement
• In the case of a concrete slab, the mesh or reinforcement bar must be ad equately supported so that it is not
disturbed during the concrete pour.
• The reinforcement must be positioned so that the heating cable will be 50 mm below the surface of the concrete.
• The reinforcement must be positioned at the correct distance below the surface of the concrete to within ± 1 cm.
• Where mesh is used, it must be strong enough that it will not "droop" when walked on for the installation of the
heating cable. Use a mesh grid of at least 50 mm. A grid spacing of 100 mm is most practical.
• Where a reinforcement bar is used, arrange its spacing to match the requirement of the heating cable spacing.
100-125 mm for
250-300 W/m²
WinterGard Cable
Sand bed
100-125 mm for
250-300 W/m²
WinterGard Cable
Concrete / compacted
substrate
Surface of concrete
50 mm
minimum
Reinforcement support
Temperature and
moisture sensor
Soil ground
Temperature and
Asphalt layer
moisture sensor
25 mm
Heating cable
Mesh
20-30 mm
Stones / paver
(max. 8 cm)
50 mm
Soil
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