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Siemens RDF300…/RDF340.../RDF400… Basic Documentation CE1P3076en
Building Technologies 6BEngineering 28 Aug 2008
Application:
Compressor in DX-type
equipment heating and
cooling
(DIP setting: "4-pipe")
L
N
10 A
L
N
Q1 Q2 Q3 Y11
Y21
AC 230 V
X1 M
X2
IIIIII
N1
M1
5(2)A
max.
5(2)A
max.
5(2)A
max.
C1
C2
B2
S2
B1
S1
M1 3-speed fan
N1 Room temperature controller
RDF300.../RDF400...
C1 Compressor “Heating”
C2 Compressor “Cooling”
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature sensor, etc.)
Note:
Use an external relay for designated reversing valve
and compressor equipment terminal connections.
See DX equipment wiring diagram for connection
details.
6.2.3 Water-based fan coil applications with RDF340...
Application:
2-pipe fan coil units
G
G0
G
G0
Q1 Q2 Q3
Y10
Y20
AC 24V
X1 M
X2
IIIIII
N1
M1
L
N
L
Y1
max.
±
1 mA
B2
S2
B1
S1
M1 3-speed fan
N1 Room temperature controller RDF340...
Y1 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
B2
S2
B1
S1
G
G0
G
G0
Q1 Q2 Q3
Y10
Y20
AC 24V
X1 M
X2
IIIIII
N1
M1
L
N
L
Y1
max.
±
1 mA
E1
max.
±
1 mA
YR
M1 3-speed fan
N1 Room temperature controller RDF340...
Y1 Zone valve
YR 0..10 signal converter/current 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
G
G0
G
G0
Q1 Q2 Q3
Y10
Y20
AC 24V
X1 M
X2
IIIIII
N1
M1
L
N
L
Y1 Y2
max.
±
1 mA
max.
±
1 mA
B2
S2
B1
S1
M1 3-speed fan
N1 Room temperature controller RDF340...
Y1 Zone valve “Heating”
Y2 Zone valve “Cooling”
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
with single-speed fan
Note: Single-speed fan
also possible in other
applications!
G
G0
G
G0
Q1 Q2 Q3
Y10
Y20
AC 24V
X1 M
X2
I
N1
M1
L
N
L
Y1 Y2
max.
±
1 mA
max.
±
1 mA
B2
S2
B1
S1
M1 3-speed fan
N1 Room temperature controller RDF340...
Y1 Zone valve
S1, S2 Switch (keycard, window contact, etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature,
changeover sensor, etc.)