3 Product description
10
993603x2x-mub-en – V09
2016/01
Thermal control valve
The thermal control valve serves as a bypass in the startup phase.
1.
When the temperature of the water in the boiler circuit is
lower than the opening pressure of the thermal control
valve, the valve is closed and thus the line to the
consumers. The water is circulated in the boiler circuit
through the completely opened bypass.
2.
When the water in the boiler circuit has obtained the
opening temperature (+/- 3 K), the thermal control valve
opens the line from/to the consumers. The circulation in
the consumer circuit is thus guaranteed. The cold water
from the consumer return line is mixed in the control
valve with the hot water from the bypass. Depending on
the temperature and the flow rate of the water from the
return line, the thermal control valve shuts off or opens
the line to the consumers. Thus the return line which
leads to the boiler always remains at a certain
temperature level.
3.
With rising temperature from the return line of the
consumers the thermal control valve opens the line to
the consumers completely. The temperature of the boiler
return remains nearly constant (+/- -3 K) until the buffer
tank is completely charged.