Assortment / System Description

VAV application
Electric reheater
18
A6V10866237_en--_b_08 141 | 275
18.28 Electric reheater
DXR2 applications permit control of electric heating coils, in addition to control
of water heating valves and/or heating/chilled water valves. They are then
operated as reheaters and only enabled if the water heating valve is fully open.
Figure: Example for a 2-pipe system VAV application with electric reheater
Key:
DXR2… Automation station R1 Room operator unit
YS Supply air VAV D1 Presence
YHC Heating/cooling coils D2 Window contact
YR Electric reheater T Over temperature contact
Y Output signal TR Room temperature
YR 1-stage electric reheater SpH Effective heating setpoint
YH Hot water heating coils
Figure: 1-stage electric reheater
Plant diagram
Sequences