Apply 120 Ω terminal resistance (not included in the packaging) between terminal + (13)
& - (14), if end device of serial RS 485 Bus, when a communication cable is longer than 200 m.
Maximal length of the communication and power cables is 500 m.
It is needed to set a communication type in Service display. There is “None” by default.
Setting in Service display (Menu BAS -> Communications):
System mode is set as OFF after the first thermostat start.
When power supply is lost during thermostat operation, then it is kept last system mode and last occupancy mode
in thermostat memory. So when power supply is back then the unit will operate according to the last setting.
It is recommended to check Clock & Date settings in case of power supply interruption within more than 24 hours.
Other parameters are saved permanently in memory, except of display color.