Assortment / System Description

VAV application
Water register for 4-pipe system
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18.11 Water register for 4-pipe system
Figure: 4-pipe system VAV applications
Key:
DXR2… Room automation station R1 Room operator unit
YS Supply air VAV D1 Presence
YC Chilled water cooling coils D2 Window contact
YH Hot water heating coils
Y Output signal TR Room temperature
SpH Effective heating setpoint SpC Effective cooling setpoint
YH Heating valve YC Cooling valve
Figure: Modulating heating and cooling sequence
Plant diagram
Sequences