User Manual

3 / 22
Siemens RDF800… A6V101123362_en--_d
Smart Infrastructure Touch screen flush-mount standalone room thermostats 2019-10-29
Applications for fan coil systems
Application and output signal, DIP switches, diagram
• 2-pipe fan coil unit ON/OFF
(heating or cooling)
1
ON
2 3
• 2-pipe fan coil unit with el. heater
(heating or cooling) ON/OFF
1
ON
2 3
3076D20
(B1)
M1
V1
T
B2
T
T
(B1)
V1
M1
3171D21
T
B2
E1
T
(B1)
T
(B1)
• 2-pipe fan coil unit 3-position
(heating or cooling)
1
ON
2 3
• 4-pipe fan coil unit ON/OFF
(heating and cooling)
1
ON
2 3
3076D20
(B1)
M1
V1
T
B2
T
T
(B1)
T
V2
V1
M1
3076D22
(B1)
T
(B1)
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
M1 3- or 1-speed fan