Commissioning
Product manual 2CKA001473B8289
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16
7
Commissioning
Calibrating the display of the actual temperature value (applies only to UTA devices)
To properly control loads larger than 2 A, the heating system must be connected for calibrating
the display. After the connection, the heating system is switched on automatically for about 20
minutes. During this time, the
CA
icon will be displayed. After this, the display adjusts itself to
the room temperature within a few minutes.
The display shows "E3" (ERRO 3) when the mark of the adjusting knob [3] is not in the
adjustment (see fig. “Attaching the adjusting knob“ on page 14).
Before repeating the calibration procedure, the unit must be disconnected from the power
supply for at least 8 minutes.
Offset function (scale correction)
Reaching the selected room temperature depends on the ambient conditions such as heating
system capacity (at least 5 K/h min.), room size, ambient temperature, insulation, etc. That is
why the values in the scale are merely guide values. To perform a setting that is as accurate as
possible, the adjusting knob can be offset in 4 stages by a total of ±6°C as follows.
3
1
4
2
1. Pull off the adjusting knob [1].
2. Cut the position lug [2] on the bottom
side of the adjusting knob off with a
suitable tool.
3. Re-attach the adjusting knob offset to
the basic position with the desired
correcting value.
Fig. 4:
Offset function
Notice
After the installation the accuracy of the switching point is established only after
an operating period of 1 to 2 hours.
For faster heating and alignment of the room temperature to the setpoint
temperature, it is recommended to set the temperature higher than required.
