specific installation instructions

This application into a shower area must be verified by the local inspector or the authority

having jurisdiction (AHJ).

Shower area installation

STEP 3.21

Cables only with (-W) on the nameplate label may be installed into a floor or bench seat

located in a shower area. It must never be installed into walls. In general, the cable should be

completely embedded into mortar directly below the surface coverings of tile or stone. Other

types of coverings are not recommended. It may be installed into a mortar layer lower than

this and beneath the waterproof system, however performance will be reduced.

See the Appendix for an example of this type installation.

It is recommended that a dedicated cable be installed in the shower area separate from the

rest of the bath floor. In case there is ever a problem with the shower installation, this cable

could be disconnected without loss of heat to the rest of the floor.

STEP 3.22

Make sure the power lead factory splice (the connection between the power leads and the heating

cable) is located outside the shower area and at least 1’ away from shower openings and other

similar areas normally exposed to water. Make sure the control is located at least 4' away from

shower openings such that it cannot be exposed to water or touched by a person in the shower area.

STEP 3.23

If the heating cable must enter the shower area over a curb, secure the cable at the edges

in an "s-shaped" curve to ensure the cable is not bent sharply or pinched when surface

coverings are installed. Do not damage any waterproofing components, and do not run the

heating cable through a non-masonry curb, causing it to overheat.

SunStat Thermostat

Factory Splice

Floor Sensor

WarmWire

CableStrap

Thin Set Mortar

Tile/Stone

A (-W) on the nameplate label

indicates a WarmWire cable

is approved for installation in

shower floors and/or benches.

area at the desired spacing, then install a single run

down the riser. Use an "s-shaped" curve to avoid

sharp bends in the cable at corners and help the

cable to lay flat. Again, the cable on the riser and

seat area MUST be fully embedded in mortar and

have approved floor coverings. Use hot glue where

necessary to secure the cable flat against the riser.