Plant diagram

Figure: Example for a floor heating/cooling application with changeover valves

Key:

DXR2…

Automation station

 

ROpUn

Room operator unit

YH

Heating valve

 

PscDet

Presence

YA

Changeover valve heating

 

WndCont

Window contact

YC

Cooling valve

 

YB

Changeover valve cooling

 

 

 

Sequences

Y

Output signal

 

TR

Room temperature

SpH

Effective heating setpoint

 

SpC

Effective cooling setpoint

YH

Heating valve

 

YC

Cooling valve

YA

Changeover valve heating

 

YB

Changeover valve cooling

Figure: Modulating heating and cooling sequence