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Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2
5.1 OPERATION GUIDE
THERMOSTAT
The Scholar V does not use a conventional wall mounted thermostat and sub base.
Instead, an internal Temperature and Relative Humidity transmistter sends room
condition information directly to the PLC in the unit for processing.
Figure 9. Internal Temperature/Humidity Transmitter
Temperature and Relative Humidity set-point adjustments are made on the HMI
(Human-Machine-Interface) screen typically located on the front of the unit. The HMI
contains several screens with parameters that can be changed by the end user. There
are other parameters designed for use by qualified service personnel and these are
accessible with a User Name and Password only.
Figure 10. HMI Touchscreen Controller
The HMI uses touch Screen Technology. All screen manipulation and set-point changes
can be made just by touching the appropriate virtual buttons on the screen.
