Siemens RDF302/VB Manual page 19

Application and output signal, DIP switches, diagram
• 1-stage compressor
(heating or cooling)
D3
• 1-stage compressor
(heating and cooling)
D3
N1 Thermostat
Terminal Y11: Heating or heating / cooling
Terminal Y21: for cooling (H &C)
E1 Electric heater
Siemens
Smart Infrastructure
3.4.3 Applications for heat pump systems
ON / OFF
ON
1 2
T
B1
N1
T
ON / OFF
ON
1 2
T
B1
N1
T
*)
RDF302.B does not have inputs X1 and X2, so sensor B1 and B2 are not
included in RDF302.B application.
RDF302 Basic documentation
• 1-stage compressor with electric
heater
(heating or cooling)
3
3
B1 Return air temperature sensor or external room
temperature sensor (optional)
D3 Dewpoint sensor
*)
ON / OFF
D3
E1
T
ON
1 2 3
T
B1
N1
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CE1P3079en
2022-06-17