Instruction Manual

9
of cable
3. Sometimes in a wide gutter, width > 15cm (6in), snow and ice
can bridge over a single heating cable creating a runnel that
prevents water from getting into the gutter and downspouts. To
maintain a continuous path for water run-off, use two parallel
heating cables in the gutter.
Cable Length required for gutter: Length of gutter
×
(1 or 2)
Cable Length required for downspouts: Number of downspouts
×
Length of downspout
×
2
bottom of the gutter to prevent
heat loss.
When using two parallel runs of
heating cable, separate the two
runs of heating cable with a
spacer every 15cm (6in).
Route the cable under and over
the gutter spike to keep the cable
suspended off the bottom of the gutter. Another way to keep the cable suspended
off the bottom of the gutter is using clips and spacers to external gutter straps.
Determine the total length of cable needed to go down and back up the downspout
as accurately as possible. Then install spacers and feed the cable into the
downspout. Take care to avoid snagging or cutting the cable on sharp edges when
feeding it into the downspout. To assist the cable down into the downspout, use a
weighted string.
Cautions:
 Spacers must be attached to the cable every 15cm (6in) so that the cable does
not touch itself in the downspout.

Tighten the spacers with pliers. Squeeze gently and use care to avoid pinching,
crimping, cutting into the cable.
Do not use a hammer to tighten the clips and
spacers.
 Do not wrap the cable around the downspout or otherwise attempt to attach it
to the outside. No cable may be extended out the end of the downspout.