Basic Documentation

Notes
Commissioning
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3.2 Commissioning
The room thermostat is delivered with a fixed set of applications.
Select and activate the relevant application during commissioning using one of the
following tools:
● Local DIP switch and HMI
● Modbus commissioning tools
Set the DIP switches before snapping the front panel onto the mounting plate, if
you want to select an application via DIP switches.
All DIP switches need to be set to “OFF” ("remote configuration"), if you want to
select an application via commissioning tools.
After power is applied, the thermostat resets and all LCD segments light up,
indicating that resetting was correct. After the reset, which takes about 3 seconds,
the thermostat is ready for commissioning by qualified HVAC staff.
If “NONE” is displayed on the LCD, the DIP switches are set to OFF-OFF-OFF for
remote configuration, but the application has not yet been assigned to the device.
The application can be set using commissioning tools via RS485 Modbus.
Note
When the application is changed, the thermostat reloads the factory settings for all
control parameters, except baud rate (P82), parity (P83) and zone addresses
(P81)!
The thermostat's control parameters can be set to ensure optimum performance of
the entire system.
The parameters can be adjusted via
● Local HMI
● Modbus commissioning tools
The control sequence may need to be set via parameter P01 depending on the
application. The factory setting for the 2-pipe application is “Cooling only”; and
“Heating and cooling” for the 4-pipe application.
Compressor-based application
When the thermostat is used with a compressor, adjust the minimum output On-
time (P48) and Off-time (P49) for Y1/Y2 to avoid damaging the compressor or
shortening its life due to frequent switching.
Recalibrate the temperature sensor if the room temperature displayed on the
thermostat does not match the room temperature measured (after minimum 1 hour
of operation). To do this, change P05.
We recommend reviewing the setpoints and setpoint ranges (P08…P12) and
changing them as needed to achieve maximum comfort and save energy.
Applications
Display “NONE”
Control parameters
Control sequence
Calibrate sensor
Setpoint and range
limitation