Function - PAW HeatBloC K33 Assembly, Installation And Operation Instructions

3.2 Function

6
K33 - constant value control circuit 20-50 °C
with 3-way mixing valve and bypass 0-50 %
The flow temperature of the heating circuit is
controlled by the integrated mixing valve. Hot water
from the boiler and cold return water are mixed
to obtain the desired flow temperature. The flow
temperature is adjusted via the thermal mixing
head and a flow contact sensor.
Due to the premixing rate that must be adjusted at
the bypass of the mixing valve, a certain amount
of cold return water is added to the flow water.
The 3-way actuator can thus work over the
whole adjustment range (0-100 %).
Example: Panel heating systems operate on a low
temperature level with small temperature differences
and high flow rates. It is therefore sufficient to
"inject" a small amount of hot water into the
"warm" return water.
Application range:
Consumer circuits with a considerably
•
lower flow temperature than the boiler
flow temperature
Small heating circuits with low output
•
and low control requirements
Can be used instead of the K32 if the
•
existing controller cannot actuate an
additional mixing valve.
9936073x-mub-en – V03
3 Product description
2020/03