tekmar 519 Thermostat Installation - Manual (Page 6)

© 2013 519_D - 03/13
6 of 16 A Watts Water Technologies Company
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 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
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.
Tiles
Thin-set
Subfloor
Subfloor
Retrofit Installations ------------------------------------------------- -------------------------------------------------
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.
Slab Sensor 079 Wiring