Basic Documentation

Functions
Additional functions
4
26 | 66
A6V12114068_en--_c
4.5 Additional functions
Functions (parameters)
Description
RDF660MB
RDF660MB/MM
Sensors and changeover functions [➙ 27]
● Heating/cooling changeover via Modbus
(P01)
Central control of heating / cooling via Modbus
✓
✓
● Automatic heating/cooling changeover via
changeover sensor (P36, P37)
● Changeover switch (P38)
Thermostat runs sequences depending on water
temperature
✓
✓
✓
✓
● Manual heating/cooling changeover (P01)
Heating / cooling controlled manually by user (via
HMI)
✓
✓
● External/return air temperature sensor
(P38)
Temperature measurement with external sensors
✓
✓
Hotel keycard/Presence detector [➙ 28]
● Presence detector (P40)
Switch operating mode
✓
✓
Output functions [➙ 28]
● Purge function (P50)
To ensure correct acquisition of the water
temperature
✓
✓
● Minimum output On/Off time (P48, P49)
To protect HVAC equipment, e.g., the compressor
and to reduce wear and tear
✓
✓
● Floor heating/cooling (P52)
Application without fan control
✓
✓
Monitoring and limitation functions [➙ 29]
● Floor temperature limitation function
(P51)
For user Comfort and protect the floor
✓
✓
● Dewpoint monitoring (P52) (RDF660MB
only)
● Fault state Fault information (P38, P40)
To prevent condensation damage to the building
✓
✓
✓
User operation / Indication [➙ 30]
● Key lock (P14)
To limit access of unauthorized persons
✓
✓
Prevention [➙ 30]
● Avoid damage from moisture (P61)
To prevent moisture damage
✓
✓