Vaillant sensoCOMFORT VRC 720/3 Manual De Uso E Instalación página 88

Abbreviation Meaning
RT Room thermostat
SCA Cooling signal
SG Transmission system operator interface
Solar yield Solar yield sensor
SysFlow System temperature sensor
TD1, TD2 Temperature sensor for a differential temper-
ature control
TEL Switch contact for remote control
TR Isolating circuit with switching floor-standing
boiler
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Operating and installation instructions 0020287900_03