ELEKTRA VCDR, Installation Manual

Page: 6 / 84

ELEKTRA VCDR
Heating Cables
Note:
Heating cables
must be
installed in accordance
with the instructions.
The mains connections of the heating cable
should
be carried out by an authorised electrician.
!
General information
Required heat output selection will depend on
the regional climate conditions.
Ambient
temperature
Heat output
> -5°C -5°C ÷ -20°C -20°C ÷ -30°C < -30°C
Gutters
Downpipes
Roof troughs
Roof edges 20 W/m
20 W/m
200 W/m
2
~150 W/m
2
20-40 W/m
20-40 W/m
200-250 W/m
2
~250 W/m
2
40-60 W/m
20-40 W/m
250-300 W/m
2
~300 W/m
2
60 W/m
40 W/m
350 W/m
2
~350 W/m
2
Roof area
extending
beyond the
building outline
~250 W/m
2
~300 W/m
2
~350 W/m
2
~500 W/m
2
Application of the selected heat output
The values given above
refer to a gutter of the
Ø 100-125 mm diameter.
Gutters of larger diameters
require application of
the 20 W/m higher heat
output.
Flat roofs, or when roof
snow barriers are installed,
which would cause
snow deposition, require
increase of the given
values with approx. 15%.
6