Specifications

16
– System3:Supplyairhumiditycontrolwithcontinuousoutputlimitation
Supply air humidity control (humidity sensor installed in supply air duct) should be used only
whereroomhumiditycontrolisimpracticablefortechnicalreasons.Suchsystemsalwaysrequire
a PI-controller.
The humidity sensor (A1) is located in the supply air duct after the steam distribution pipe. The
humidity sensor (A2) for the continuous output limitation is located in the supply air duct before
thesteamdistributionpipe.SuchasystemrequirestheinternalPIDcontrolleroranexternalPI-
controllerwiththeoptiontoconnectasecondhumiditysensor.
A1/2 humidity sensor
B1 ventilationinterlock
B2 airowmonitor
B3 safetyhumidistat
PI
E
 externalPI-controller
PID
I
internal continuous controller (PID controller)
Y input signal from A1
Z input signal from A2
Whichhumiditycontrolsystemforwhichapplication?
Application Locationofthehumiditysensor
Roomorexhaustairduct supply air duct
Airconditioningsystemswith:
Supply air portion up to 33% System 1 System 1
Supply air portion up to 66% System 1 or 2 System 2 or 3
Supply air portion up to 100% System 2 System 3
Supply air humidity control ––– System 3
PleasecontactyourCondairsupplier,ifyourapplicationmeetsthefollowingconditions:
– Humidicationofsmallroomsupto200m
3
– Airconditioningsystemswithahighnumberofairexchanges
– Systemswithvariableairvolumeow
– Testfacilitieswithextremecontrolaccuracyrequirements
– Roomswithahighvariationinmax.steamcapacity
– Systemswithtemperatureuctuations
– Coldroomsandsystemswithdehumidication