THERM SY 20

Synthetic heat transfer fluid with a very high thermal stability designed to operate in a flowing circuit, at up to 340°C, without the formation of deposits resulting from thermal degradation.
It must not come in contact with dehydrogenation catalysts at high temperatures.

THERM SY 20 must flow at a speed of at least 1 metre per second.
THERM SY 20, like any heat transfer fluid, must be covered with a layer of nitrogen, in an expansion tank if its temperature is higher than 80°C.