RDG400 Siemens Thermostat

Room thermostat, AC 24 V, VAV heating and cooling systems

• Output 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 V
• 3 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 contact
• Operating modes: Comfort, Energy Saving and Protection
• Modulating PI control
• Control depending on the room or the return air temperature
• Automatic or manual heating / cooling changeover
• Adjustable commissioning and control parameters
• Minimum and maximum setpoint limitation
• Minimum and maximum limitation of air flow signal
• Output signal inversion (DC 0…10 V) as an option
• Backlit display

Application selectable:

• Single-duct system
• Single-duct system with electrical heater
• Single-duct system and radiator / floor heating
• Single-duct system with heating / cooling coil

 Technical specifications