Summary; Brief Description - Siemens RDG400 Basic Documentation

Applications
Features
Functions
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Siemens
Building Technologies
2

Summary

2.1

Brief description

• Single-duct system
• Single-duct system with electrical heater
• Single-duct system and radiator / floor heating
• Single-duct system with heating / cooling coil
• 2 multifunctional inputs and 1 digital input for keycard contact, external sensor,
etc.
• Operating modes: Comfort, Energy Saving and Protection
• Automatic or manual heating / cooling changeover
• Adjustable commissioning and control parameters
• Minimum and maximum setpoint limitation
• Backlit LCD
• AC 24 V operating voltage
• Modulating PI/P control
• Output DC 0...10 V
• Output signal inversion (DC 10...0 V) as an option
• Output on/off, PWM or 3-position control
• Adjustable minimum and maximum limitation of air flow output signal
• Maintenance of room temperature via built-in temperature sensor or external
room temperature / return air temperature sensor
• Automatic or manual changeover between heating and cooling mode
• Selection of applications via DIP switches
• Selection of operating mode via the operating mode button on the thermostat
• Display of current room temperature or setpoint in °C and/or °F
• Minimum and maximum setpoint limitation
• Button lock (automatic or manual)
• 1 digital input, freely selectable for:
– Operating mode switchover contact (keycard)
– Automatic heating / cooling changeover contact
– Dewpoint sensor
– Electrical heater enable
– Fault input
• 2 multifunctional inputs, freely selectable for:
– Operating mode switchover contact (keycard)
– Automatic heating / cooling changeover sensor
– External room temperature or return air temperature
– Dewpoint sensor
– Electrical heater enable
– Fault input
• Floor heating temperature limit
• Reloading factory settings for commissioning and control parameters
RDG400 Basic Documentation
Summary
CE1P3182en
19 Jun 2009