tekmar 079 User Manual

D 079

SLAB SENSOR 079

The tekmar Slab Sensor 079 has a stainless steel sleeve which is designed for use in concrete, thin-set or grout. The 079 is supplied with 10’ (3 m) of 2 conductor zipcord.

Installation - Slab Sensor 079

STEP ONE

New Installations

Thin-Set or Thin-Pour Applications

Thin Floor Coverings (less than 3/8” (10 mm))

If the floor covering is to be installed over either a thin-set or thin-pour material of sufficient depth, the 079 slab sensor can be placed directly into either the thin-set material or the

INSTALLING THE SENSOR

Electric Cables

Thin-set

Tiles

thin-pour material and covered over. Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location. Splices within the thin-set or

thin-pour should be avoided to ensure trouble free operation. The sensor should be located mid way between the heating elements to ensure a proper temperature reading.

If a thin floor covering is to be installed directly to the subfloor, a groove 1/8” (4 mm) wide by 1/16” (2 mm) deep can be cut into the surface of

Hardwood

Subfloor

the subfloor to accommodate the wire for the sensor. Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location. Splices under the floor covering should be avoided to ensure trouble free operation. A groove 3/16” (5 mm) wide by 3/16” (5 mm) deep by 1-3/4”

(45 mm) long should be cut to accommodate the sensor. The sensor should be located mid way between the heating elements to ensure a proper temperature reading.

Thick Floor Coverings (great-

Hardwood

er than 3/8” (10 mm))

If a thick floor covering is to be installed directly

Subfloor

to the subfloor, a groove 1/8” (4 mm) wide by 1/16” (2 mm) deep can be cut into the back of the flooring material to accommodate the wire for the sensor. Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location.

Splices under the floor covering should be avoided to ensure trouble free operation. A groove 3/16” (5 mm) wide by 3/16” (5 mm) deep by 1-3/4” (45 mm) long should be cut to accommodate the sensor. The sensor should be located mid way between the heating elements to ensure a proper temperature reading.

NOTE: If it is not practical to cut a groove in the surface covering, follow the installation method used for thin floor coverings.

Retrofit Installations

Tile Floor Coverings

If a Slab Sensor 079 is to be installed into an existing tile floor with sufficiently large grout lines, the sensor and wire can be installed in one of the grout lines between the tiles. Select

Subfloor

Tiles

Thin-set

a low traffic area of the floor that is mid way between the heating elements for the sensor location. Ensure that the sensor is located in such a position that the attached wire is able to reach to a suitable junction location. Splices within the grout should be avoided to ensure trouble free operation. Remove the appropriate grout line and place the sensor and wire in the floor. Re-grout the area.

Installing the Sensor to the Bottom of a Subfloor

Subfloor

If the sensor is to be installed to the bottom of a subfloor, cut a piece of 1” (25 mm) thick rigid insulation into a 6” (150 mm) by 6” (150 mm) square. A groove 3/16” (5 mm) wide by 3/16” (5 mm) deep by 1-3/4” (45 mm) long should be cut into the insulation to accommodate the sensor. Place the sensor in the groove and sandwich the sensor between the insulation and the subfloor. Use a suitable fastening method to affix the insulation to the subfloor.

STEP TWO

WIRING AND TESTING THE SENSOR

Caution: Do not run sensor wires parallel to telephone or power cables. If the sensor wires are located in an area with strong sources of electromagnetic interference, shielded cable or twisted pair should be used or the wires can be run in a grounded metal conduit.

The Slab Sensor 079 is supplied with 10’ (3 m) of cable. If a longer length is required, 24 AWG or larger wire can be spliced onto the two wires from the sensor. The splices should be properly soldered and protected in an accessible junction box. Follow the sensor testing instructions given in this brochure and then connect the wires to the control.

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