User Manual

Room automation
Desigo room automation
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CM110664en_07 291 | 351
Application
the central plant.
– Supply VAV flow deviation helps to optimize the fan speed by calculating
the airflow deviation through the supply VAV dampers
– Extract VAV flow deviation helps to optimize the fan speed by calculating
the airflow deviation through the extract VAV dampers
– Supply VAV flow saturation evaluation (air flow control loop cannot get
enough air to reach setpoint) evaluates the supply VAV saturation signals
from the rooms to optimize the fan speed
– Extract VAV flow saturation evaluation (air flow control loop cannot get
enough air to reach setpoint) evaluates the extract VAV saturation signals
from the rooms to optimize the fan speed
– Supply VAV setpoint evaluation with the summed setpoints of the supply
VAV the fan's speed can be set for an optimized fan speed when VAV
positions and VAV flow rates are not known
– Extract VAV setpoint evaluation with the summed setpoints of the extract
VAV the fan's speed can be set for an optimized fan speed when VAV
positions and VAV flow rates are not known
Loadable central functions (continued)
Application
Central functions ● 2x VAV supply fire emergency group with off, extract, pressurization or purge
● 1x Central weather station with:
– Outside temperature
– Outside brightness
– Outside solar radiation
– Outside wind speed
– Outside precipitation
● 2x Light manual central operation group
● 1x Light central control group for emergency situations
● 4x Shading central facade functions with:
– Central weather station brightness calculation supports facade automatic
function
– Glare protection function calculates the glare protection state by central
weather station for all facade
– Annual shading calculates the glare protection state for all facade by in-
formation from annual shading computer
– Thermal protection for unoccupied rooms by central global radiation
sensor on weather station
– Three delayed distribution groups for central blind commands for big
buildings
● 2x Shading manual central operation with 3 delayed distribution groups for
big buildings
● 1x Shading service ensures central commanding of blind group with high
priority
● 1x Shading central protection for all blinds with:
– Wind protection
– Precipitation protection
– Frost protection
– Three delayed distribution groups for big buildings
See Application Catalog .