Siemens RDF302/VB User Manual

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Siemens RDF302 Basic documentation CE1P3079en
Smart Infrastructure Contents 2022-06-17
Contents
1. About this document ........................................................................... 4
1.1 Revision history ..................................................................................... 4
1.2 Reference documents ............................................................................ 5
1.3 Before you start ..................................................................................... 5
1.3.1 Copyright ............................................................................................... 5
1.3.2 Quality assurance .................................................................................. 5
1.3.3 Document use / request to the reader .................................................... 5
1.4 Target audience, prerequisites ............................................................... 6
1.5 Glossary ................................................................................................ 6
2. Summary .............................................................................................. 7
2.1 Types .................................................................................................... 7
2.2 Ordering ................................................................................................ 7
2.3 Functions ............................................................................................... 7
2.4 Integration via Modbus........................................................................... 8
2.5 Equipment combinations ........................................................................ 9
2.6 Accessories ........................................................................................... 9
3. Functions ........................................................................................... 10
3.1 Temperature control ............................................................................. 10
3.2 Operating modes ................................................................................. 11
3.2.1 Different ways to influence the operating mode .................................... 12
3.3 Room temperature setpoint.................................................................. 13
3.3.1 Description .......................................................................................... 13
3.3.2 Setting and adjusting setpoints ............................................................ 14
3.4 Applications overview .......................................................................... 16
3.4.1 Applications for fan coil systems
*)
........................................................ 17
3.4.2 Applications for universal systems
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..................................................... 18
3.4.3 Applications for heat pump systems
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.................................................. 19
3.5 Additional functions.............................................................................. 20
3.6 Control sequences ............................................................................... 23
3.6.1 Sequences overview (setting via parameter P01) ................................. 23
3.6.2 2-pipe fan coil unit................................................................................ 24
3.6.3 2-pipe fan coil unit with electric heater.................................................. 25
3.6.4 4-pipe fan coil unit................................................................................ 27
3.6.5 Chilled / heated ceiling and radiator applications .................................. 29
3.6.6 Compressor applications ..................................................................... 29
3.6.7 Setpoints and sequences ..................................................................... 30
3.7 Control outputs .................................................................................... 32
3.7.1 Overview ............................................................................................. 32
3.7.2 Control outputs configuration (setting via DIP switches or Modbus
commissioning tool) ............................................................................. 33
3.8 Fan control .......................................................................................... 34
3.9 Multifunctional input, digital input.......................................................... 37
3.10 Handling faults ..................................................................................... 39
3.11 Modbus RTU mode .............................................................................. 40
3.11.1 Fault function on Modbus ..................................................................... 40
3.12 Communication objects........................................................................ 41

Siemens RDF302/VB Specifications

General

Brand	Siemens
Model	RDF302/VB
Category	Thermostat
Language	English