Assortment / System Description

Radiant/chilled ceiling application
4-pipe ceiling heating/chilled ceiling with changeover valves
15
72 | 275 A6V10866237_en--_b_08
15.3 4-pipe ceiling heating/chilled ceiling with
changeover valves
Figure: Example for ceiling heating/chilled ceiling application with
changeover valves
Key:
DXR2… Automation Station R1 Room operator unit
YH Heating valve D1 Presence
YA Changeover valve heating D2 Window contact
YC Cooling valve CdnMon Condensation monitor
YB Changeover valve cooling
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
Plant diagram
Sequences