Siemens RDF302 User Manual

s 3079 RDF302 Semi flush-mount room thermostats with RS485 Modbus communications RDF302 For 2-pipe, 2-pipe with electrical heater, and 4-pipe

Connection terminals L, N Operating voltage AC 230 V Q1 Control output “Fan speed 1 AC 230 V” Q2 Control output “Fan speed 2 AC 230 V” Q3 Control

Dimensions (mm) 11 / 12 Siemens RDF302 Semi flush-mount room thermostats with RS485 Modbus communications CE1N3079en Building Technologies 2

© 2011-2014 Siemens Switzerland Ltd Subject to change 12 / 12 Siemens RDF302 Semi flush-mount room thermostats with RS485 Modbus communications CE

Use Room temperature control (heating or cooling) in individual rooms and zones by means of: • 2-pipe fan coil units • 2-pipe fan coil units with el

• Floor heating temperature limit • Reload factory settings for commissioning and control parameters • RS 485 Modbus (terminals +, - and REF) for c

Equipment combinations Type of unit Product no. Data sheet*) Cable temperature sensor QAH11.1 1840 Room temperature sensor QAA32 1747 Condensation

Mechanical design The thermostats consist of 2 parts: • Front panel with electronics, operating elements and built-in room temperature sensor. • Mou

Engineering notes The device address of each RDF302 was defaultly assigned to “1“. If necessary, engineer/installer can change the address value throu

Commissioning notes The room thermostats are delivered with a fixed set of applications. Select and activate the relevant application during commissio

Technical data Power supply Rated voltage AC 230 V Frequency 50/60 Hz Power consumption Max. 7VA / 3.7 W Outputs Fan control Q1, Q2, Q3-N Rating AC 2

Environmental conditions Operation Climatic conditions Temperature Humidity As per IEC 60721-3-3 Class 3K5 0...50 °C <95 % r.h. Transport Climatic