Assortment / System Description

Fan coil application
Electric reheater
17
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17.24 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 fan coil application with electric
reheater
Key:
DXR2… Automation station R1 Room operator unit
Q1 Fan D1 Presence
YHC Heating/cooling coils D2 Window contact
YR Electric heating coil 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