Siemens RDF800KN Manual page 2

Use
Functions
2 / 20
Siemens
Building Technologies
Room temperature control (heating or cooling) in individual rooms and zones by
means of:
• 2-pipe fan coil units
• 2-pipe fan coil units with electrical heater
• 4-pipe fan coil units
• Chilled /heated ceiling
• Chilled /heated ceiling and electrical heater
• Chilled ceiling and radiator / under floor heating
• Compressors in DX-type equipment
• Compressors in DX-type equipment with electrical heater
The RDF800KN... controls:
• One single or 3-speed fan
• One or two ON/OFF valve actuators
• One ON/OFF valve actuator and one 1-stage electrical heater
• One 3-position valve actuator
• One 1-stage compressor in DX-type equipment, or one 1-stage compressor with
electrical heater
Used in systems with:
• Heating or cooling mode
• Automatic heating/cooling changeover
• Manual heating/cooling changeover
• Heating and cooling mode (such as 4-pipe system)
The room thermostats are delivered with a fixed set of applications. The relevant
application is selected and activated during commissioning using one of the
following tools:
• Synco ACS
• ETS4
• Local DIP switch and HMI
• Room temperature control via built-in temperature sensor or external room
temperature / return air temperature sensor
• Changeover between heating and cooling mode (automatically via local sensor
or bus, or manually)
• Selection of applications via DIP switches or commissioning tool
• Selection of operating mode via touch screen
• Temporary Comfort mode extension
• 1- or 3-speed fan control (automatically or manually)
• Display of current room temperature or setpoint in °C and/or °F
• Minimum and maximum limitation of room temperature setpoint
• Keylock function: unlock, total lock and setpoint
• 2 multifunctional inputs, freely selectable for:
Window contact
−
Presence detector
−
External room temperature or return air temperature sensor
−
Fault input
−
Monitor input for temperature sensor or switch state
−
Sensor for automatic heating / cooling changeover (RDF...)
−
Dew point sensor (RDF...)
−
Electric heater enable (RDF...)
−
• Advanced fan control function, such as: fan kick, fan start delay, and selectable
fan operation (enable, disable or depending on heating or cooling mode)
RDF800KN...
Touch Screen Flush-mount Room Thermostats with KNX Communications
CB1N3174en
2014-09-10