IMPORTANT Ordering Information for Schluter®-DITRA-HEAT Cables
Do not purchase a heating cable the same size as the area to be tiled; this will be too much heating cable!
Very important: Never CUT the heating cable. This would change the cable resistance and could lead to a fire.
Install the heating cable at a spacing of 3 studs (3-1/2″ – 9 cm).
Minimum spacing from walls or fixtures (e.g., cabinets) is 3″ (75 mm).
Minimum spacing from other heat sources (baseboard heaters, fireplaces, forced air heating ducts, etc.) is 8″ (200 mm)
Minimum spacing from any plumbing drain is 6″ (150 mm).
The heating cable section of the cable must be entirely installed under the floor covering. In order to prevent a fire hazard, do not install it anywhere else (e.g., in a wall).
Never install heating cable under vanities, bathtub platforms, kitchen cabinets and islands or any other fixtures. Excessive heat could build up in these confined spaces and may cause a fire.
It is helpful to plan the location of a buffer zone, as it is not possible to predict where the heating cable will end. The buffer zone is an area where heating is not essential, typically behind a toilet or adjacent to a door opening. This area allows for placement of excess heating cable.
Heating cable testing is required while the heating cable is on the spool and at two subsequent steps during installation to ensure cable quality and for warranty purposes. A megohmmeter is required for the insulation resistance testing of the heating cables.