Installation & Operation Manual
RX Kits. For roof and gutter deicing applications
8 | © Danfoss | FEC | 2020.02
AQ00008644904301-010201 / 088L3371
Place the RX heating cable around the perimeter of the dormer, as in Figure 4.
Figure 4.
Dormer Pattern
Route the cable a minimum of 3’ (91.5 cm) up and down the valley; lengthen as appropriate for a
higher roof (Figure 5).
Figure 5.
Valley Pattern
Other areas of the roof not mentioned here may also be heated using the triangle pattern to prevent
the formation of ice dams.
Figure 6.
Cable routed back along the roof line in the gutter and downspouts
Dormer Pattern
Valley Pattern
Other areas
If a gutter is present, all gutters below heated areas of the roof must have a heating cable run through to
allow for the drainage of melted snow/ice. If a downspout is present along the route of the gutter, drop
the RX cable down and back up the downspout; continue the cable along the gutter (Figure 6). If the
downspout is at the end of the cable route, you need only to run a single length down the downspout
(Figure 6).
CAUTION: Install such that the heating cable does not touch, overlap or cross itself.
Gutters and Downspouts
