Condair Mk5 - Control System Options

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4.2 Selecting the control system
The various control systems
– System 1: Room humidity control
System 1 is suited for direct room humidication and air conditioning systems with mainly
recirculated air. The humidity sensor or humidistat respectively is preferably located in the room
itselforintheexhaustairduct.
A1 humidity sensor
B1 ventilation interlock
B2 airowmonitor
B3 safetyhumidistat
B4 humidistat
PI
I
internal continuous controller (PI-controller)
PI
E
external continuous controller (e.g. PI-controller)
Y inputsignalfromA1
– System 2: Room humidity control with continuous limitation of the supply air humidity
System2issuitedforairconditioningsystemswithalarge portion of supply air, low supply air
temperature, post-humidication, or variable airow volume.Ifthesupplyairhumidityexceeds
the preset value, the continuous limitation is effected prior to the room hum idity control.
Thehumiditysensor(A1)ispreferablylocatedintheexhaustairductorintheroomitself.Thehu-
miditysensor(A2)forthelimitationofthesupplyairhumidityislocatedinthesupplyairductafter
the steam distribution pipe. This control system requires a external continuous controllerwiththe
option to connect a second humidity sensor.
Attention! The continuous limitation of the supply air humidity is no substitute for the safety hu-
midistat.
A1/2 humidity sensor
B1 ventilation interlock
B2 airowmonitor
B3 safetyhumidistat
PI
E
external continuous controller (e.g. PI-controller)
Y inputsignalfromA1
Z inputsignalfromA2
Condair
Mk5
Condair
Mk5