Data Sheet for Product

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Siemens RDF302… Flush-mounted room thermostats with RS485 Modbus communications CE1N3079en
Smart Infrastructure 2020-02-21
Applications for Universal systems
*)
Application and output signal, DIP switches, diagram
Chilled / heated ceiling ON/OFF
(heating or cooling)
1
ON
2 3
Chilled / heated ceiling with electric
heater
(heating or cooling) ON/OFF
1
ON
2 3
3
1
9
1
S
1
1
N1T
B1
T
B2
T
D3
V1
3
1
9
1
S
1
2
N1T
E1
B1
T
B2
T
D3
V1
Chilled / heated ceiling 3-position
(heating or cooling)
1
ON
2 3
Chilled ceiling and radiator ON/OFF
(heating and cooling)
1
ON
2 3
3
1
9
1
S
1
1
N1T
B1
T
B2
T
D3
V1
3
1
9
1
S
1
3
N1T
B1
T
D3
V2
V1
V1 Heating or heating / cooling valve actuator B1 Return air temperature sensor or external room
temperature sensor (optional)
V2 Cooling valve actuator B2 Changeover sensor (optional)
E1 Electric heater D3 Dewpoint sensor
*)
RDF302.B does not have inputs X1 and X2, so sensor B1 and B2 are not
included in RDF302.B application.