Siemens RDF302/VB Manual page 17

Application and output signal, DIP switches, diagram
• 2-pipe fan coil unit
(heating or cooling)
B2
T
V1
• 2-pipe fan coil unit
(heating or cooling)
B2
T
V1
V1 Heating or heating / cooling valve actuator
V2 Cooling valve actuator
E1 Electric heater
Siemens
Smart Infrastructure
3.4.1 Applications for fan coil systems
ON/OFF
T
(B1)
M1
T
(B1)
3-position
T
(B1)
M1
T
(B1)
*)
RDF302.B does not have inputs X1 and X2, so sensor B1 and B2 are not
included in RDF302.B application.
RDF302 Basic documentation
• 2-pipe fan coil unit with electric
ON
heater ON/OFF
(heating or cooling)
1 2 3
E1
B2
T
V1
• 4-pipe fan coil unit
ON
(heating and cooling)
1 2 3
V2
V1
B1 Return air temperature sensor or external room
temperature sensor (optional)
B2 Changeover sensor (optional)
M1 3- or 1-speed fan
*)
T
(B1)
M1
T
(B1)
ON / OFF
T
(B1)
M1
T
(B1)
CE1P3079en
ON
1 2 3
ON
1 2 3
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2022-06-17