Assortment / System Description

Room pressurization and fume hood control
Pressurized room, temperature control
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The application can be used for air quality control. The room must have an air
quality sensor. The application automatically enables air quality control as soon
as an air quality sensor is configured.
Air quality setpoints can be configured or disabled separately for each room
operating mode.
The maximum air volume flows for a VAV actuator can be configured for each
air terminal. The sequence diagram illustrates an example of possible
relationships between air flow levels for the various HVAC functions. When the
flow needed for ventilation is more than the flow needed for heating or cooling,
the ventilation requirement takes effect.
Description Name Default value
Supply air VAV maximum air flow for ventilation VavSuAflMaxVnt 100 [m
3
/h]
27.78 [l/s]
VAV volume flow TR Room temperature
SpH Effective heating setpoint SpC Effective cooling setpoint
VavSuAirFl
MaxH
Maximum air volume flow heating VavSuAirFl
MaxC
Maximum air volume flow cooling
VavSuAirFl
MinH
Minimum air volume flow heating VavSuAirFl
MinC
Minimum air volume flow cooling
VavSuAflMi
nVnt
Minimum air volume flow for
ventilation
Figure: Volume flow setpoints
Air quality control for
minimum ventilation
and demand-controlled
ventilation DCV
Volume flow
setpoints