EasyHeat ADKS Serie Guia Del Usuario página 24

D. EXAMPLE #1 – EXAMPLE OF TYPICAL ESTIMATION
Consider a roof section (See Figure B-2 on page 20) that you want to treat that has:
 32 feet of roof
 an overhang of 12 inches with a gutter
 1 dormer (30 feet around)

1 valley

2 downspouts (each 10 feet long)
From Table B-2, the multiplier for a roof with a gutter and an over hang of 12 inches is 4.
Using Table B-1, the cable length needed = (32 x 4) + (1 x 30) + (1 x 6) + (2 x 10 x 2 ) = 204
Using Table B-3, you would select the ADKS-1000 (200 feet of cable). You would select the smaller cable because the difference between the cable
length and your calculation is less than 5 feet.
E. EXAMPLE #2 – EXAMPLE OF SPECIAL ROOF AREA ESTIMATION
This example shows how to estimate the cable length needed for a limited problem roof area – a skylight (see Figure B-3 on page 22). For this
roof, you would like to treat only the problem area underneath the skylight.
This roof section has:
 1 downspout (l0 feet long)
 1 skylight (the distance from the bottom of the skylight to the roof edge is 12.5 feet, and the width of the ice dams that form beneath the
skylight is about 6 feet)

1 gutter
From Table B-6, the special roof area multiplier for a roof with a gutter is 2.6.
Using Table B-5, the cable length needed = (1 x 10 x 2 ) + (12.5 x 6 x 2.6) = 215
From Table B-3, you would select the ADKS-1200 (240 feet of cable) to ensure complete coverage.
Note: If you are only treating one special roof area and the problem area is a significant distance from the downspout, you may wish to add extra
cable to your estimation to account for the cable in the gutter.
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