USER MANUAL
5
Appearance and description
ST2 is a powerful and efficient modular room thermostat with
exchangeable modules. It can be used in heating or (and) cooling
systems. It is suitable for radiator, convector and surface heating
systems. This manual applies for:
- ST2R - ST2 with relay module
- ST2RDR - ST2 with double relay module
- ST2JV - ST2 with module for Junkers and Vaillant gas boilers
- ST2JVDR - ST2 with module for Junkers and Vaillant gas boilers
and auxiliary relay module
- ST2TX - ST2 with module for wireless control
Room thermostat ST2 also enables connection of auxiliary tem-
perature sensor
1
and remote activation with the telephone
1
.
1
this option is not available in all ST2 editions
LEGEND
Hold key while pressing other keys.
Hold key until you hear a beep sound.
Press and release key.
Press key to increase or decrease value.
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