Assortment / System Description

Fan coil application
Water register 2-pipe system with changeover
17
A6V10866237_en--_b_08 99 | 275
17.6 Water register 2-pipe system with changeover
Figure: 2-pipe system fan coil applications with changeover
Key:
DXR2… Room automation station R1 Room operator unit
Q1 Fan D1 Presence
YHC Heating/cooling coils D2 Window contact
Y Output signal TR Room temperature
SpH Effective heating setpoint SpC Effective cooling setpoint
YH Heating valve YC Cooling valve
Chovr Changeover system
Figure: Modulating heating and cooling sequence with changeover system
Plant diagram
Sequences