3M TTS-5-1-OJ, Application Manual

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To use the 3M Heat Trace Bill of Materials Tool, visit 3M.ca/HeatTrace To use the 3M Heat Trace Bill of Materials Tool, visit 3M.ca/HeatTrace
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Creating a Materials List
Step 1: Identify the area requiring snow and ice melting and determine level of
protection required.
The area that will require heat tracing is based somewhat on the size and shape of the building. A building with no
overhangs, for example, may only need gutter and downspout protection while an overhang covering a building
entrance that is subject to drifting may need complete coverage. Typically the areas susceptible to snow and ice dams
consist of:
• Roof overhangs without gutters
• Roof overhangs with gutters and downspouts
• Gutters and downspouts only
Review the plans and/or design of the facility to identify the areas that will require roof and gutter snow and ice melting.
To establish the level of protection necessary, decide if the climate/installation conditions fall into the moderate or
heavy levels based on the variables below:
If any variable falls into the heavy category, plan the system for heavy accumulation to ensure adequate protection for
the building. Should weather conditions, the building’s design/orientation or the expected usage of the facility dictate,
increase the amount of cable to be installed.
Introduction
This guide provides a basis for a roof and gutter snow and ice melting system. The amount of heating cable required and
the performance of the system is highly dependent upon the following parameters:
Geographical location of project
Orientation of building to prevailing wind and weather
Building and construction
Degree of protection required1
1
While entire roof areas can be electrically heat traced for snow and ice removal, this guide addresses only roof overhangs, gutters and downspouts.
Should your application require more area to be protected, contact 3M at 3Menergysolutions@mmm.com.
Snowfall Rate Moderate (≤1"/hr) Heavy (1-2"/hr)
Eave-to-ridge distance ≤20 ' 20-40 '
Size (width) of gutter ≤6 " 6-12"
To create your materials list online, visit 3M.ca/HeatTrace.