Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoint
- 4.4 Application overview
- 4.5 Additional functions
- 4.6 Control sequences
- 4.7 Control outputs
- 4.8 Fan control
- 4.9 Multifunctional input, digital input
- 4.10 Handling system faults
- 4.11 Modbus RTU mode
- 4.12 Communication objects
- 4.13 Control parameters
- 5 Connection
- 6 Technical data
- 7 Dimensions
- Index
Functions
Control parameters
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4.13 Control parameters
To optimize control performance, a number of control parameters can be
readjusted on the thermostat via HMI, commissioning/operating tool. These
parameters can also be set during operation without opening the unit.
In the event of a power failure, all control parameter settings are retained.
The control parameters are assigned to 2 levels:
● Service level, and
● Expert level, including communications, diagnostics and test
The Service level contains a small set of parameters to set up the thermostat for
the HVAC system and to adjust the user interface. These parameters can be
adjusted any time.
The parameters at the Expert level need careful configuration because they impact
the thermostat’s control performance and functionality.
4.13.1 Parameter setting via local HMI
1. Press + and - buttons simultaneously for more than 6 seconds.
Release and within 2 seconds, press + button again for more than 3 seconds
until P01 is displayed.
Continue with step 2.
1. Press + and - buttons simultaneously for more than 6 seconds.
Release and within 2 seconds, press - button again for more than 3 seconds
until P01 and service are displayed.
Continue with step 2.
2. Repeatedly press the + or - button to select the required parameter.
3. Press + and – simultaneously once to enter EDIT mode. Then press + or –
button to change the value of the selected parameter and press + and –
simultaneously to save the change.
4. Repeat steps 2 to 3 to display and change additional parameters.
5. Press + or – until “End” is displayed, and then press + and – simultaneously to
exit parameter entry mode.
The factory setting for the control parameters can be reloaded via P71, by
changing the value to On. Confirm the change by pressing + and - buttons
simultaneously.
8888 is displayed during reload and the device restarts 4 s later.
4.13.2 Setting/downloading parameters via tool
The control parameters can be adjusted via Modbus either by parameter download
during commissioning or during normal operation using the Modbus commissioning
tool. Refer to Commissioning [➙ 12].
Enter only Service level
Enter Expert level with
Diagnostics and test
Reset parameters