Installation Guide
To select the proper size heating mat(s) for your application, measure the area to be heated and determine the heating
mat widths and lengths to fit the clear inside dimensions (wall to wall, etc). It is important to allow up to 6” of clearance
around the perimeter of the room and from any baseboard heating or permanent fixtures to allow the mats to fit without
touching adjacent vertical surfaces or overlapping. Accurate dimensions are required for the proper size selection.
For installations over wooden sub-floors, check floor for deflec-
tion. If it flexes when walked on, the addition of another layer of
plywood may be required to provide sufficient rigidity to support
tile and provide a stable sub floor. (For further information on
wood sub-floor design criteria for tile installations, refer to the
International Residential Code.)
Sketch the System Layout
A sketch of the area to be warmed, including the mat locations and associated wiring, is recommended to make
installation and ordering as smooth as possible. See the example sketch below.
Multiple Unit Installations
Installations with multiple heating mats will require a junction box to gang the connections together. If a junction
box is required, it should be located directly beneath the thermostat, 12” to 18” above the floor. The total number
of mats used in a single circuit is limited to 15 amps
When specifying multiple width heating mats for the same area, make sure that the total power required does not
exceed the total power of a single circuit. Add additional 20 amp circuits as required for proper electrical supply
to the installation.
SECTION 2. Designing the Installation
Installation & Owner’s Guide QW-TILE 3
NOTE:
The heating mats cannot be cut
or notched to fit around any
obstructions or penetrations such
as door openings or floor registers.