WarmlyYours TempZone Floor Heating Cable (Twin) - Manual (Page 19)

8. Apply thinset or self-leveling compound over the heating cable and subfloor. Acrylic, latex, or polymer-modified thinset
cement may be used. Ensure that the material you select is compatible with the flooring material. Contact the adhesive
manufacturer for more information and curing times.
Ensure that there are no air gaps during application of thinset or self-leveling underlayment (SLU). Make sure the
heating cable, factory splices, and low-voltage thermostat sensor (if used) are completely embedded in the thinset or
SLU. If SLU is used, be sure to use any primer required by the manufacturer.
A single- or double-layer method may be used over any subfloor (plywood, cement slab, concrete backer board, or
mud bed). These methods are suitable for any stone or tile floor covering. For carpet (U.S. only), vinyl or laminate floor
coverings, WarmlyYours recommends covering the floor heating system with 3/8 inch of self-leveling underlayment
(total depth, whether the single- or double-layer application method is used) to create a smooth surface for installing
these types of flooring. Follow the instructions appropriate to the type of floor covering to be used.
CAUTION: Careless use of the trowel can damage the heating cable. Never drop or bang a trowel directly
on the cable.
5.5.3 Instructions for Installation in Wet Locations
1. Installation shall be in accordance with the National Electrical Code, NFPA-70 and CAN/CSA- C22.1, Canadian Electrical
code (CEC), Part 1 and that final acceptance is to be made in the field by the Authority Having Jurisdiction (AHJ).
2. WarmlyYours recommends using a separate heating cable for shower areas. Note: The UL Listing for this product does
not cover use in wet locations in the United States. Installations shall be in accordance with the National Electric Code,
NFPA 70 and any other applicable jurisdictional codes and final acceptance is to be made by the Authority Having
Jurisdiction (AHJ).
3. If insulation board is being used over a slab, use suitable glue or cement-based adhesive, or thinset mortar to adhere it
to the slab. If installing in a wet location, ensure the slope of the mortar bed is maintained so that it directs water to the
drainpipe.
Installation and Operation SECTION 5
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