Assortment / System Description

70
Functions and characteristics
• Room temperature control with the built-in sensor or an external room/return
temperature sensor
• Heating/cooling changeover (automatically via local sensor or bus, or manually
via switch)
• Selection of application via DIP switches or commissioning tool (when
commissioning with the ACS790 or ETS, all DIP switches must be set to OFF)
• Selection of operating mode via operating mode button on the room thermostat
• Temporary extension of Comfort mode
• Display of current room temperature or setpoint in °C and/or °F
• Minimum or maximum limitation of room temperature setpoint
• Reset to factory settings (commissioning and control parameters)
• Communication with Synco and other KNX-compatible controls via KNX
• Display of outside temperature or time of day via KNX
• Scheduling and central setpoint compensation via KNX
• Synco controls use air demand signal from the room thermostats to optimize the
supply air temperature
• 1- or 3-speed fan control (automatically or manually)
• 2 multifunctional inputs, freely selectable for:
– Operating mode changeover contact (Keycard) and H/C changeover sensor
– External room or return air temperature sensor, dewpoint sensor
– Electric heater enable
– Monitoring input for temperature sensor or switch state
• Extended fan functions: E.g. fan kick, fan start, selection of fan’s operating mode
(enabled, disabled, or depending on heating or cooling mode)
• "Purge" function together with 2-port valve in a 2-pipe changeover system
• Request to clean filters
• Temperature limitation of floor heating system
• 4 buttons to control KNX actuators in KNX S-mode (switching groups with the
functions switching, dimming, blinds, and scenes)
Application Control outputs DIP switches
Factory setting Configuration via tool
- ACS790
- ETS
1
ON
23
- 1-stage compressor On/Off
- Chilled/heated ceiling On/Off
1
ON
23
2-pipe
heating or cooling
- 2-pipe fan coil unit 3-pos.
- Chilled/heated ceiling 3-pos.
3076D20
(B1)
M1
Y1
T
B2
T
T
(B1)
1
ON
23
2-pipe
with electric heater
heating or cooling
- 2-pipe fan coil unit On/Off
- Chilled/heated ceiling On/Off
- 1-stage compressor On/Off
Y1
M1
3171D21
T
B2
YE
T
(B1)
T
(B1)
1
ON
23
4-pipe
heating and cooling
- 4-pipe fan coil unit On/Off
- Chilled ceiling and radiator On/Off
- 1-stage compressor On/Off
T
Y2
Y1
M1
3076D22
(B1)
T
(B1)
1
ON
23
Common functions
of RD..
Specific functions
of RDF..
RDF301.50 only
Applications RDF..