Siemens RDF400 Series Manual page 2

Use
Applications
Functions
2/14
Siemens
Building Technologies
To control the room temperature in individual rooms and zones that are:
· Heated or cooled with 2-pipe fan coil units
· Heated or cooled with 2-pipe fan coil units with electrical heater
· Heated and cooled with 4-pipe fan coil units
· Heated or cooled with compressor in DX type equipment
· Heated or cooled with compressor in DX type equipment with electrical heater
· Heated and cooled with compressor in DX type equipment
The RDF300... / RDF400... / RDF600... control:
· One 1- or 3-speed fan
· One or 2 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
The RDF340... controls:
· One 1- or 3-speed fan
· One or 2 DC 0...10 V valve actuators
· One DC 0...10 V valve actuator and one modulating electrical heater (DC 0...10 V)
Used in systems with:
· Heating or cooling mode
· Automatic heating/cooling changeover
· Manual heating/cooling changeover
· Heating and cooling mode (e.g. 4-pipe system)
· Maintain room temperature via built-in temperature sensor or external room
temperature / return air temperature sensor
· Automatic or manual changeover between heating and cooling mode
· Select applications via DIP switches
· Select operating mode via the operating mode button on the thermostat
· 1- or 3-speed fan control (automatic or manual)
· Display current room temperature or setpoint in °C and/or °F
· Minimum and maximum setpoint limitation
· Key lock (automatic and manual)
· 2 multifunctional inputs, freely selectable for:
– Operating mode switchover contact (key card)
– Automatic heating/cooling changeover sensor
– External room temperature or return air temperature sensor
– Dewpoint sensor
– Electrical heater enable
– Alarm input
· Advanced fan control function, i.e. fan kick, fan start, selectable fan operation
(enable, disable or depending on heating or cooling mode)
· Purge function together with 2-port valve in a 2-pipe changeover system
· Reminder to clean filters
· Floor heating temperature limit
· Reload factory settings for commissioning and control parameters
· 7-day time program: 8 programmable timers to switch over between Comfort and
Economy mode (RDF400.01 / RDF600T)
· Backlit LCD (RDF300.02 / RDF400.01 / RDF600 / RDF600T)
· Optional infrared remote control ( RDF400.01 / RDF600T)
RDF300.../RDF340 / RDF400... / RDF600... Flush-mounted Room thermostats CE1N3076en
2018-12-27