Applications - Siemens RDF300 Documentation

2-pipe fan coil unit,
heating and cooling
4-pipe fan coil unit,
heating and cooling
2-pipe fan coil unit
with electrical heater,
heating or cooling with
auxiliary heater
Key Y1
Y2
E1
Siemens
Building Technologies
4.4

Applications

The controller supports following applications, which can be configured by DIP-
switches on the inner side of the controller front panel. Depending on the type,
on/off or modulating control outputs are available.
Application and
Control output
2-pipe/1-stage compressor
on/off
2-pipe
modulating, 3-position
2-pipe
modulating, DC 0...10 V
4-pipe/compressor for H+C
on/off
4-pipe modulating,
DC 0...10 V
2-pipe/1-stage compressor
with electrical heater on/off
2-pipe with electrical heater
modulating, DC 0...10 V
Note: Modulating electrical heater
Heating or heating/cooling valve actuator
Cooling valve actuator
Electrical heater
Note: The diagrams above show only the water based fan coil application, but not compressor!
RDF300.../RDF340.../RDF400... Basic Documentation
4BFunctions
Type DIP-
reference switch
RDF300
ON
RDF400
1 2
RDF300 ON
RDF400
1 2
ON
RDF340
1 2
RDF300 ON
RDF400
1 2
RDF340 ON
1 2
ON
RDF300
RDF400
1 2
RDF340 ON
1 2
M1 3-speed or single-speed fan
B1 Return air temperature sensor or
external room temperature sensor (optional)
B2 Changeover sensor (optional)
Diagram
B2
T
T
(B1)
Y1
M1
T
(B1)
Y2
T
(B1)
Y1
M1
T
(B1)
B2 E1
T
T
(B1)
Y1
M1
T
(B1)
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CE1P3076en
28 Aug 2008