Siemens RDG400 ROOM THERMOSTAT, AC 24 V, VAV HEATING AND COOLING SYSTEMS

Room thermostat, AC 24 V, VAV heating and cooling systemsOutput DC 0…10 V for VAV actuator and auxiliary output ON/OFF, PWM or 3-position or 3-position for VAV actuator and auxiliary output DC 0...10 V3 multifunctional inputs for keycard contact, external room / return air temperature (1x, QAH11.1, QAA32), heat / cool changeover, operation mode changeover, window contact on/off, dewpoint monitor, electrical heater enabled, fault contactOperating modes: Comfort, Energy Saving and ProtectionModulating PI controlControl depending on the room or the return air temperatureAutomatic or manual heating / cooling changeoverAdjustable commissioning and control parametersMinimum and maximum setpoint limitationMinimum and maximum limitation of air flow signalOutput signal inversion (DC 0...10 V) as an optionBacklit displayApplication selectable:Single-duct systemSingle-duct system with electrical heaterSingle-duct system and radiator / floor heatingSingle-duct system with heating / cooling coilOutput DC 0…10 V for VAV actuator and auxiliary output ON/OFF, PWM or 3-position or 3-position for VAV actuator and auxiliary output DC 0...10 V3 multifunctional inputs for keycard contact, external room / return air temperature (1x, QAH11.1, QAA32), heat / cool changeover, operation mode changeover, window contact on/off, dewpoint monitor, electrical heater enabled, fault contactOperating modes: Comfort, Energy Saving and ProtectionModulating PI controlControl depending on the room or the return air temperatureAutomatic or manual heating / cooling changeoverAdjustable commissioning and control parametersMinimum and maximum setpoint limitationMinimum and maximum limitation of air flow signalOutput signal inversion (DC 0...10 V) as an optionBacklit displayApplication selectable:Single-duct systemSingle-duct system with electrical heaterSingle-duct system and radiator / floor heatingSingle-duct system with heating / cooling coil