King Electric TCM - Manual (Page 7)

TC/TCM Installation in Concrete Slab - Step by Step
STEP 1: PLAN YOUR LAYOUT
Make a sketch of the area to be covered with heating TC/TCM cables/mats. Determine the location of fixtures such as drains, pipes, electrical
conduits, structural members. Remember to keep a distance of 12 inches (30cm) around such obstacles. All obstacles that shall be in the con-
crete slab should be installed prior to TC/TCM installation to avoid damaging the cable.
You should also plan the location of the thermostats, floor sensors locations and their conduit’s location. The start of cables/mats should be as
close as possible to the thermostat’s final placement. Follow instructions under section “Installing the Cable / Mat” on page 4.
STEP 2: INSTALLING THE FLOOR SENSOR AND CONDUIT
A floor sensor for high temperature protection must be installed in a rigid conduit. The conduit protects sensor and facilitates its replacement in
the unlikely event of failure.
The sensor and the conduit may be installed in connection with the actual construction work and connected at a later date. Please observe the
following:
1. Ensure that the conduit is sealed before the concrete is poured.
2. The conduit must be positioned between the heating cables. This is usually at approximately the mid-point of the concrete slab.
3. It is recommended to keep the conduit as short as possible and to minimize the number of bends in the conduit. This will ease the installation
of the sensor.
4. Place the sensor inside the tube until it reaches the end of the conduit.
5. Sensor & conduit should be placed within 3 to 6 inches of the heating cables and with at least 2 inches of concrete or sand above and below.
6. The floor sensor should be installed at least 3 feet (1m) into the heated area.
7. The floor sensor has a standard 10 foot (3m) lead that may be extended with 20 AWG wire.
KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: 206 763 7738 · www.king-electric.com
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INSTALLATION - CONCRETE APPLICATION
Installation Diagram: