Applicatio Manual
Universal Interface 4 DIN/NTC EK- CG2-TP
Revisione 1.0.0 - Aggiornato: 04/09/2017
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MAEKCG2TP_EN
Pag. 57
•
T
Smax
≤ 35°C for peripheral zones of the rooms.
National standards may also limit these temperatures at lower values. Peripheral zones are strips generally located
along the external walls with a maximum width of 1 m.
The floor heating system (electrically powered version) involves the laying under the floor coating of an electric cable
powered by the mains voltage (230 V) or low voltage (for example 12 or 45 V), possibly already prepared in the form of
rolls with constant distance between sections of cable. The powered cable releases heat to the overlying coating that
heats the room by radiation. The regulation is based on measurement of the temperature of the air mass, but generally
requires the monitoring and limiting of the surface temperature by using a NTC-type sensor which is in contact with the
floor surface.
The surface temperature limitation may be realized for several purposes:
•
physiological compatibility (correct temperature at the height of the legs);
•
when the system is used as auxiliary stage for heating. In this case, the heat losses to the exterior of the building
are handled by the main heating stage, while the auxiliary stage only works to keep the floor temperature at a
comfortable level (for example in bathrooms of residential buildings, sports centers , spas and thermal baths,
etc.);
•
protection against damages of the final coating due to an accidental overheating. Note that the warm water
radiant panels are usually already equipped with a safety thermostat (with intervention on the hydraulic mixing
group), while in the case of electrical power this device is not usable and it is common practice to realize a
temperature limitation with a surface temperature sensor connected to the device.