User manual
Installation, Operating & Maintenance Manual
25
3 Operation
3.1 Display Information
Pressing the SEL button displays the unit of measure currently in use for the main display
Holding the
button displays the value of the control sensor preceded by the unit of measure.
Holding the
button displays the value of the high-limit sensor preceded by the unit of measure.
3.2 Changing The Set Point
Press the SEL button for 2 seconds until “St” appears. On releasing the button, the unit of measure is
displayed followed by the current set point value. To change the set point, press the
or
button to increase
or decrease the value. Press SEL or PRG to lock in the new set point. Waiting 5 seconds without pressing
SEL or PRG will revert to the old value.
3.3 Activating Manual Drain
In addition to the manual drain switch on the side of the humidifier, pressing the
and
buttons
simultaneously for 2 seconds will force a manual drain which will completely empty the cylinder without having
to hold the manual drain switch. This procedure can be stopped at any time by pressing the
and
buttons
simultaneously for 2 seconds again.
3.4 Accessing/Changing Configuration Parameters
The numerical, configuration and control parameters are grouped into three levels:
LEVEL 1 - set point parameters: the value of the humidifier's main set point “St”, accessible directly
via the keypad for both reading and modification. See “Changing The Set Point”.
LEVEL 2 - control parameters and measurements: the physical values measured and the operating
parameters involving the control of the humidification process; these too can be accessed directly via
the keypad for reading and modification.
LEVEL 3 - configuration parameters: consisting of the data needed to customize the controller’s
operation. These parameters can be accessed only by password.
To display the Lev el 2 Control Parameters:
• Press and hold the PRG button for 5 seconds until P0 is displayed;
• Press the
and
buttons to scroll through the Px and dx parameters;
• Press the SEL button to display the value of any parameter (the unit of measure will display first for 1
second).
Code
Range
Default
Unit Description
100 Maximum output for H controllers
P0 20 to 100
100
%
Maximum output for P controllers
P1 2.0 to 19.9 5
%RH, °C
Humidification proportional band
P3 to 100
100 %RH
P2 (1)
P3 to 60 60 °C
High humidity or high
temperature alarm set point
P3 (1)
0 to P2 0
%RH, °C
Low humidity/temp. alarm set
point
P4 0 to 100 1 min Alarm delay (0 = 30 seconds)
accessible only in stand-alone mode
(A0=2, 3 or 4)
P5 2 to 100 10 %RH Dehumidification dead zone
accessible only with the dehumidification
function enabled
P6 1.0 to 19.9 5 %RH Dehumidification differential
(b1 odd number) in stand-alone mode
(A0 = 2 or 3)