7
Installing the Cable (Continues
…
)
Gutter and Downspouts Only Routing Pattern
: If your icing problems are only in the gutter, cable would be routed only
in the gutter an
d downspouts using the recommended “double run” of cable, as shown in Figure 9. This figure shows an alternate “single
end of run”.
1. Determine the best route for the heating cable on roofs and gutters.
2. Route the heating cable to avoid mechanical damage from ladders, etc.
3. Before installing the heating cable, make sure the roof, gutter and downspouts are free from debris, leaves, pine needles or any
combustibles.
4. Check the maximum exposure temperature rating of all roof, gutter and downspouts, and select a heater that will not exceed their
temperature ratings.
Figure 9
– Double cable run in the gutter downspouts
1. Use hanger bracket to support the heating cable where it enters a downspout to prevent cable from being damaged by gutter edge. It
also can be used as spacers in wider gutters.
2. Run heating cable over top of hanger and secure to hanger using UV resistant cable ties.
3. Use roof clips for attaching the heating cable to the roof.
4. For roof valleys, measure the distance two thirds of the way up and double it. Add this additional length to the overall cable length.
5. Field assembled end terminations should not be located in an area where moisture is present or, at the lowest point of downspouts.
6. Attach the two warning labels (included with the heating cable). The labels must be clearly visible on the premises.
