Product description
2018/02 993203x3x-mub-en – V10 7
The thermal valve shuts off the connection to the tank, as long
as the water in the boiler circuit [tk] is colder than the opening
temperature of the thermal control valve. The pump in the K36
circulates the water in the boiler circuit through the automatic
bypass which is completely open.
When the water in the boiler circuit [tk] has obtained the opening
temperature (+/- 3 K) of the thermal control valve, the valve opens
the connection from/to the tank. The bypass shuts off to the same
extent as the connection to the tank is opened. The control valve
opens the return line from the tank and thus enables the water to
circulate in the tank circuit. The cold water from the tank 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 tank. Thus the return line which leads to the boiler [tr] always
remains at a certain temperature level.
With rising temperature in the flow line of the boiler or with rising
temperature from the return line of the tank [tz] the thermal control
valve opens the connection to the tank. The temperature of the
return line of the boiler remains nearly constant (+/- 3 K).
Please note:
When the boiler output is controlled by the boiler temperature the
boiler must heat up 20 K above the opening temperature of the
K36. Otherwise there will not be enough power available (the
boiler output may be reduced before the thermal control valve
opens completely).
