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Siemens
RDF300… / RDF340... / RDF400… / RDF600… Basic Documentation
CE1P3076.en
Smart Infrastructure
2020-02-21
6.2
Connection diagrams
6.2.1
Water-based fan coil applications with RDF300... /
RDF400... / RDF600…
Application:
2-pipe fan coil units
M1
3-speed fan
N1
Room thermostat
RDF300... /
RDF400... / RDF600…
V1
Zone valve
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)
Application:
2-pipe fan coil units
with electrical heater
M1
3-speed fan
N1
Room thermostat
RDF300... /
RDF400... / RDF600…
V1
Zone valve
E1
Electrical heater
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)
Application:
4-pipe fan coil units
M1
3-speed fan
N1
Room thermostat
RDF300... / RDF400... / RDF600…
V1
Zone valve “Heating”
V2
Zone valve “Cooling”
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)
Application:
2-pipe fan coil units,
3-position
M1
3-speed fan
N1
Room thermostat
RDF300... /
RDF400... / RDF600…
V1
Zone valve, 3-position
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)
Application:
2-pipe fan coil units
with single-speed fan
Note: Single-speed fan
possible also in other
applications!
M1
Single-speed fan
N1
Room thermostat
RDF300... /
RDF400... / RDF600…
V1
Zone valve
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover
sensor, etc.)