Plant diagram

Figure: 1-stage heat pump with reversing valve control

Key:

DXR2…

Automation station

 

HP

Heat pump

D1

Presence

 

Q1

Fan

D2

Window contact

 

R1

Room operator unit

Sequences

 

Y

Output signal heat pump

 

TR

Room temperature

SpH

Effective heating setpoint

 

SpC

Effective cooling setpoint

YH

Heat pump heating

 

YC

Heat pump cooling

YH1

Heat pump heating 1 stage

 

YC1

Heat pump cooling 1 stage

YRV

Reversing valve heat pump

 

 

 

Figure: 1-stage heating and cooling sequence with reversing valve