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symbol while the pump is running. User can switch to manual mode by pressing
ò key. By pressing ð key while centerline blinks, a hand symbol G in lower line
shows manual operation. Pressing ð one more time lets you turn the pump ON or
OFF. By pressing ñ key you change the pump operation.
Advanced Operation (Setting for Three Sensors and Flow Rate Input)
To change the factory setting of two sensors you need to advance to the Men domain using
access code “64”:
Navigation of advanced features of the unit and selection of parameters is the same as before by
using ïòñð keys:
Advancing – Press the Advance key ïð briefly to advance to the next selection or to
increase/decrease the set point of the selected parameter. Hold it down for fast change.
Acceptance – Press Set-Up key ò once to select the parameter. Press ñ key to accept the
selection or the set point.
Three-Temperature Sensor Setting (PROGRAM 1):
USDT 2004 accepts two different sensor types or a reference value. Press the
Advance key ïð briefly until SENSOR appears in centerline and press the key ò.
Select S3 sensor and change the 250 reference value to read KTY sensor:
Note: Tank over heating protection in program mode 1 (NR 1) controls the pump
operation based on temperature reading by T2 and T3 sensor readings.
Selection:
S3 Sensor 3 (tank) selection
Designation:
KTY Thermistor sensor (2000 O at 25
o
C)
Accept this setting by pressing ñ key. If you wish to change set points for pump
operation, follow instruction explained in Basic Operation section (these changes
are made in Par domain).
max?1 Pump stops above tank temperature (T2)
max=1 Pump runs again below this set point (T2)
max?2 Pump stops above tank temperature (T3)