|
Devi Heating Systems In Slab Installations |
 |
The cables should be attached to the floor's structural reinforcement to achieve the correct spacing and support. If this is not possible, a separate layer of light gauge reinforcing mesh with clips or tie wires that do not damage the cable sheath may be used. Clip fixing spacings should not exceed 600mm and should support the cable at least 25 to 75mm below the surface.
Cables should be no closer than 100mm from any wall or fixed item. |
 |
 |
 |
Cable spacing shall be as even as practical across the entire heated area, with reference to the required surface loading and maximum cable loading.
Cables should be laid so as to avoid water pipes, baths, built-ins etc, and where it is known that permanent structures are to be installed above the finished floor, or where the floor is likely to be penetrated by nails or similar fixings, (the yellow lines indicate the boundaries of permanent fixtures).
|
 |
The entire length of evenly spaced cable, including the cold tail termination, must be embeded in concrete unless designed for other applications.
Where contactors are required, the cold tails should terminate in a wall/control box approximately 300mm above floor level. If the thermostats supplied are capable of switching the load direct, the cold tails could be taken directly to the thermostat position. The conduit containing the floor sensor should, naturally, also terminate at this control box. It is important to establish where the control box will be situated before installation to ensure that cables are laid out correctly.
To avoid accidental damage, the cables should be covered as soon as possible with the concrete. |
 |
Notice the conduit extending between the cable loops, it contains the sensor probe and is sealed to prevent water/concrete from damaging the probe. |
 |
 |
 |
 |
|
