7
General information
Surface protection against snow
and ice deposition
When protecting external areas from snow and ice
deposition, it is required to assess the required heat
output value per m2 of the surface. Recommended
heat output depends on the regional climate condi-
tions, i.e. minimum ambient temperature, snowfall
intensity and wind strength.
Higher output is required if the heated area is:
• exposed to wind from below:
– bridges, stairs, loading ramps, overpasses
• located in a regions of intense snowfall
Ambient
temperature
Heat output
[W/ m2]
> -5°C
-5°C ÷ -20°C
-20°C ÷ -30°C
< -30°C
200
300
400
500
Note:
Never lead the end joint and the connecting joint
between the heating cable and the power supply
conductor out of the surface. Both joints must be
placed – depending on the type of surface – within
the layer of sand, dry concrete or directly in concrete.
Never bend the joint and end seal.
Heating cables must be installed according to the
Instructions.
Mains connection of the heating cables should be
performed by an authorized electrician.
Power supply conductors (”cold tails”) in asphalt
should be positioned in the protective metal in-
stallation conduit. Alternatively, power supply con-
ductors can be led out of the area where asphalt
will be poured out.
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