Assortment / System Description

Heat pump application
2-stage heat pump with reversing valve control
20
A6V10866237_en--_b_08 175 | 275
20.8 2-stage heat pump with reversing valve control
Figure: 2-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
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
YH2 Heat pump heating 2 stage YC2 Heat pump cooling 2 stage
YRV Reversing valve heat pump
Figure: 2-stage heating and cooling sequence with reversing valve
Plant diagram
Sequences