Danfoss ECiceguard 18 Readymade Manuel D'installation page 7

Installation Instruction
Frost protection of roofs
During periods with cold and precipitation
dangerous and damaging ice formations are of-
ten formed on the roof, in roof gutters and down
pipes, especially when the temperature is around
freezing point.
Later, when the weather changes the melt
water cannot be carried off which often causes
damages on buildings. These problems can be
prevented with ECiceguard heating cables in-
stalled on the roof and in gutters and down pipes.
Concerning roof constructions with low
slope it is often sufficient to install ECiceguard in
roof gutter and down pipe to ensure an efficient
draining off of the melt water.
Concerning roof constructions with high
slope it is often necessary also to install the
heating cable on the lowest section of the roof.
If the roof is supplied with snow fence the cable
can be installed from this to the roof edge with
advantage.
Concerning valleys, the cable must be
mounted in the valley. To achieve efficient protec-
tion the C-C distance should not exceed 15 cm.
For control of roof systems Danfoss offers
different thermostats such as ECtemp 316,
ECtemp 330 or ECtemp 850.
088L8004 / VIMSB102
ECiceguard 18 Readymade
Installation:
In many ordinary roof gutters it is sufficient
to install one cable length in roof gutter and
down pipe.
Typically, the cables should be installed with
a C-C distance of approx. 15 cm. To ensure the
distance spacing clips can be used.
With the above mentioned installation the
system will typically ensure ice and snow melting
down to a temperature of approx. -10°C.
If you want to frost protect the roof down to
-20°C, a general rule will be to double the effect,
and for -30°C to triple the effect.
If the cable lies across an edge etc. the
spacing clips can be used to relieve strain on the
cables, e.g. where the cable enters the down pipe.
Relief of a cable hanging in the down pipe
is necessary when the cable length in the pipe
exceeds approx. 25 cm.
The cable in the down pipe should continue
to frost-proof depth under the surface of the
ground (approx. 1 m).
Cables installed on the roof must always be
positioned upwards/downwards and not along
the roof. The installation can be made with a
zigzag pattern as shown on the illustration on the
next page.
© Danfoss | FEC | 2019.04 | 7
GB