Some parameters in ACS have a range different from that on the room
thermostats.
The thermostat does not accept changes outside its range. This can be seen
online in that a changed value returns to the original value.
Use the ranges described in the parameter tables in Control parameters [➙ 138].
5.2.2 Operation and monitoring with ACS
In the ACS program, select Plant ➙ Open to open the plant.
To open monitoring and operation, select Applications ➙ Plant operation.