Siemens RDG2 KN Series Basic Documentation

Functions
Additional functions
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4.6 Additional functions
Functions (parameters)
Description
RDG26..KN
RDG20..KN
Sensors and changeover functions [➙ 48]
● Heating/cooling changeover via bus (KNX)
Central control of heating / cooling via bus
✓
✓
● Automatic heating/cooling changeover via changeover
sensor
● Changeover switch (P150, P153, P155)
Auto changeover on each equipment
✓
✓
✓
✓
● Manual heating/cooling changeover (P001)
Heating / cooling controlled manually by user (via HMI)
✓
✓
● External/return air temperature sensor (P150, P153,
P155)
Temperature measurement with external sensors
✓
✓
Presence detector [➙ 49]
● Standard presence mode (P150 / P153 / P155)
Switch operating mode locally or via bus
✓
✓
● Hotel presence mode (P150 / P153 / P155)
Switch operating mode locally or via bus
✓
✓
Output functions [➙ 50]
● Purge function (P251)
To ensure correct acquisition of the water temperature
✓
✓
● Minimum output On/Off time (P212, P213)
To protect the HVAC equipment, for example, the
compressor and reduce wear and tear
✓
✓
● Swap outputs for 2-pipe and 2-stage applications
(P254)
To optimize the use of heating/cooling energy in mixed
systems
✓
✓
● Floor heating/cooling (P350)
Application without fan control
✓
✓
● Qx relay switching function (P400, P401, P402)
Control external equipment based on function status
(Heating/cooling demand, operating mode, sequence,
humidity, …)
✓
✓
Monitoring and limiting functions [➙ 53]
● Floor temperature limitation function (P252)
For user Comfort and protect the floor
✓
✓
● Supply air temperature limitation (P063, P064)
To increase the comfort, by avoiding to warm or too cold
air in the room
✓
✓
● Flow limitation in heating for PICV (P256)
To balance heating and cooling systems and avoid
hydraulic problems caused by different flow rates
✓
✓
● Dewpoint monitoring
● Fault state "condensation" (P150, P153, P155 = 4)
To prevent condensation damages in the building
✓
✓
✓
✓
● Valve kick/exercising (P250)
To prevent valve freezing after extended inactivity
✓
✓
● Return flow temperature control (P061, P062)
To save energy by adjusting flow speed in district
heating systems
✓
✓
User operation / Indication [➙ 56]
● Button lock (P028)
To limit access to unauthorized people
✓
✓
● Green leaf (P110, P111)
Indication about energy efficient
✓
✓
● Set time /date
To set the time of day (AM/PM, hours and minutes) and
date (weekday, month and year)
✓
✓
● Set Away (holiday mode)
To set a holiday period
✓
✓
Humidity [➙ 59]
● Humidity control (P007, P450)
Limit min. and max. humidity in the room
✓
✓
Scheduler [➙ 62]
● Scheduler (P005)
To set time schedule
✓
✓
M/S, Manager/subordinate [➙ 64]
To save energy in open spaces
✓
✓
Preventive operation [➙ 68]
● Avoid cold air in heating mode (P365)
To make sure reaching setpoint temperature during
heating mode
✓
✓
● Avoid damage from moisture (P363, P364)
To prevent from damage of moisture
✓
✓
NFC communication [➙ 68]
● NFC (P500)
NFC communication via Siemens smartphone
application
✓
✓
IAQ – CO2 monitoring and control [➙ 68] (RDG204KN, RDG264KN)
● IAQ monitoring (P450)
● CO
2
indication (P009)
● IAQ control (P023, P450, P453, P454, P455, P456)
● Frost protection (P109)
To monitoring and controlling indoor air quality
✓
✓

Siemens RDG2 KN Series Specifications

General

Brand	Siemens
Model	RDG2 KN Series
Category	Thermostat
Language	English