Assortment / System Description

Radiant/chilled ceiling application
2-pipe chilled ceiling
15
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15 Radiant/chilled ceiling application
All DXR2 application types include a ceiling heating/chilled ceiling application.
As a rule, each DXR2 can control 2 ceiling heating/chilled ceilings via Triac or
analog outputs. For ceiling heating/chilled ceilings, the controller operating
mode modulating or 2-point can be configured.
The DXR2 application can control chilled ceilings in a 2-pipe system, ceiling
heating/chilled ceilings in a 2-pipe system or ceiling heating/chilled ceilings in
a 4-pipe system or ceiling heating in a 2-pipe system.
15.1 2-pipe chilled ceiling
Figure: Example for a chilled ceiling application 2-pipe system
Key:
DXR2… Room automation station R1 Room operator unit
Rcg Chilled ceiling valve D1 Presence
CdnMon Condensation monitor D2 Window contact
Y Output signal TR Room temperature
SpH Effective heating setpoint SpC Effective cooling setpoint
YC Cooling valve
Figure: Modulating cooling sequence
Plant diagram
Sequences