Manual LogoMatic G2
26
4.6 Control valves
Both control valves (X) and (Y) control the priority switching for domestic water heating (DWH) or the
secondary heating circuit supply. For the DWH, control valve (Y) is completely closed, and control
valve (X) ensures the desired DHW temperature based on the prim. RL flow
Variants depicted: UC / MC-UC
Please note: the flow through valve (X) is opposite the direction of the arrow (with AB). A and B are
used as inputs.
The electrical control of the mounted actuators (24 V stepper motors) is carried out via the station
controller (LogoTronic HIU controller), which receives corresponding signals from the flow or
temperature sensors.
Warning!
The stepper motors may not be removed from the associated valve bodies because, with this kind of
valve, the motor sha is permanently connected to the internal valve ball and removing the motor would
render the entire valve unserviceable as well as allowing heating water to leak out at these points.
The manufacturer-specific documents for the valve must also be observed!
four-wire
control
Servomotor
24 V
RL
from
DWH
to
RLprim
FL RL RL
primary
Htg.
RL
Htg.
from
FL RL RL
primary
Htg.
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