Manual

ROOF DEICING
Selection of heating cable. The total heating cable length
for deicing is determined by including all elements of
the roof system that need protection. Use Tables 1 and 2
to determine the total length of cable. usually one cable
will be sufficient for both roof and gutter areas. For
larger installations, use separate cables for roof area
and gutter/downspout area.
Installation procedures.
• Remove leaves, pine needles, or any combustible
debris from roof, gutters and downspouts before
installing roof deicing cable.
• Use ZH-C Roof Clips (sold separately) for attaching
the heating cable to the roof (shingle and metal roofs).
• For downspouts longer than 20 feet, use DSH
Downspout Hanger (sold separately) to support the
heating cable where it enters/exits a downspout.
One hanger is required for each downspout. Always
loop the cable down to the bottom of downspout and
back up toward gutter, clamping it into downspout
hanger to prevent cable from being damaged by drain/
gutter edge. This also ensures that the cable tail is
secured on the roof. Cable to be linked to roof loop (see
diagrams).
TABLE 2
CABLE LENGTH FACTORS VS. EAVE OVERHANG
Eave Overhang Loop Height Length Factor Length Factor
E H Shingle Roof (Note 1) Metal Roof (Note 2)
12" 18" 1.9 2.5
24" 30" 2.7 3.5
36" 42" 3.6 4.5
48" 54" 4.6 5.5
Cable length required = Length Factor × Roof Length (feet)
Notes:
1. Standard shingle roof with sawtooth pattern. (See diagram)
2. Metal roof with loop pattern. (See diagram)
3. For other designs, contact Easy Heat.
TABLE 1
DETERMINATION OF TOTAL CABLE REQUIREMENTS
Items Cable Required
Roof Edge From Table 2 based on eave overhang
Gutter 1 ft of cable per foot of gutter (if gutter is wider than 6", use 2 traces)
Downspout 2 ft of cable per foot of downspoutcable is looped down and back
Roof Valley 6 ft of cable per valleyloop 3' up valley and back
Dormer Perimeter 1 ft of cable per foot of dormer perimeter
Weatherproof Outlet
Box (by installer)
E overhang distance from
roof edge to face of wall
Heater Cable
Drip Loop
24"
TYPICAL SHINGLE ROOF (Single cable shown for roof and gutter)
TYPICAL METAL ROOF (Separate cables shown for roof and gutter)
H loop height
OVERHANG
PSR Pipe & Roof Deicing Cable Installation Instructions 3
DSH
Hanger Clamp
MID CIRCUIT
DOWNSPOUT
INSTALLATION
End Seal
Must not be sub-
merged nor allowed
to be at the bottom
end of a downspout.
END CIRCUIT
DOWNSPOUT
INSTALLATION
24"
Roof Clip (ZH-C)
Heater Cable
Roof Clips
(@24" O.C.)
H
Drip Loop (Typ.)
Weatherproof
outlet box
(by installer)
Clip gutter cable to roof
cable to provide a path for
water to get to ground