This is the length of the heat cable you will need. Lastly, measure the distance between the edge of the roof, where you will start the heat cable, and the electrical outlet where you will plug in the cable.Īdd up all of these dimensions. If a downspout is not at the end of a cable run, double its measurement here-the cable will need to go all the way down and then back up inside the downspout. Now, measure the length of each downspout and add this measurement to the previous computation. If the eave depth is between 24 and 36 inches, multiply the roof-line measurement by 6.8. Automatic Electric Heat Cable Kit is designed for use on metal and plastic water pipes to help prevent the pipes from freezing. If the eave is between 12 and 24 inches deep, multiply the roof-line measurement by 5.3. If the eave overhang is 12 inches deep, multiply the roof-line measurement by 4. Next, measure the depth of the eave overhang from the edge of the roof (not the gutter) straight back to the outside wall. Once secure, overlay the fiberglass insulation and vapor seal wrap. Nominal Voltage: 120V nominal power output at 50☏, 120V: 3W per foot. Feed cable into the thermostat unit and plug into the power supply. A two-year product warranty is available.

The ends of the tape should be covered with waterproof end caps and left above ground to limit exposure to moisture.

There are several steps and calculations in this process.īegin by measuring the length of your roofline. Be sure to tie around corners or bends in the pipe for snug contact. Nashua 322 multi-purpose HVAC foil tape is specially designed for taping heating, ventilation and air conditioning joints and seams against moisture and vapour and other general purpose repairs. This foil tape is UL coded approved for sealing class 1 rigid (181 A-P) or class 1 flexible (181B-FX) duct joints and connections. The first step is to determine how much heat cable you need. 324A Premium Foil HVAC UL Listed Sealer Duct Tape Professional results that a DIYer can be Professional results that a DIYer can be proud of begins with 324A Premium Foil HVAC UL Listed Tape by Nashua.

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