User Manual

Room automation
Desigo room automation
20
290 | 351 CM110664en_07
Application
●
Green leaf
Four light groups ● Manual switched control
● Manual dimmed control
● Automatic presence control
● Automatic brightness control
● Constant light control
● Multi group constant light control
● LED support on push buttons
● Green Leaf - RoomOptiControl
● Burn-in & operating hours function
Two blinds ● Manual control
● Automatic control with anti glare function and energy efficiency function
● Green Leaf - RoomOptiControl
● Collision detection
Loadable central functions
Application
Central functions ● 4x Control room operating mode groups with:
– Room mode and room setpoint distribution to rooms
– Start optimization switches the heating on at the appropriate time
– Three delayed distribution groups of room operating mode for big
buildings
● 1x Seasonal compensation of room temperature setpoints
● 2x Demand controlled hot water supply group
● 2x Demand controlled chilled water supply group with:
– Condensation prevention shifts the base chilled water setpoint to avoid
condensation at chilled ceiling radiant devices
– Two pipe changeover control handles the heating / cooling changeover for
a two-pipe system
– Free cooling manages the delivery of chilled water in situations where this
can be done with almost a zero expenditure of energy, e.g., chiller plants
with the possibility to cool the water with the recoolers when outside
conditions are favorable.
● 1x Demand temperature control group with:
– Relief function opens additional VAV without demand to ensure stable
working of the primary plant
– Changeover evaluation decide if the central air should be used for heating
or for cooling
– Dew point evaluation is used to dehumidify at the primary air handling
unit to avoid condensation in the rooms
– Humidity demand evaluates room humidity to help the primary plant
determine when to humidify or dehumidify
– Override function allows a technician or balancer to override the VAV
applications for balancing and commissioning
● 1x Demand controlled pressure control by either:
– Supply VAV position evaluation helps to optimize fan speed by averaging
the 10 highest supply damper positions and providing this information to
the central plant
– Extract VAV position evaluation helps to optimize fan speed by averaging
the 10 highest extract damper positions and providing this information to