Assortment / System Description

VAV application
Water register 2-pipe system with changeover
18
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18.12 Water register 2-pipe system with changeover
Figure: 2-pipe system VAV applications, with changeover
Key:
DXR2… Room automation station R1 Room operator unit
YS Supply air VAV 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