Siemens RDF302 User Manual download pdf (Page 3)

• Floor heating temperature limit

• Reload factory settings for commissioning and control parameters

• RS 485 Modbus (terminals +, - and REF) for communication with Modbus

compatible devices

• Display of outdoor temperature or time of day via Modbus

Applications

The thermostats support the following applications, which can be configured using

the DIP-switches on the inner side of the thermostat's front panel or a

commissioning tool.

All DIP switches need to be set to OFF (remote configuration, factory setting) to

select an application via commissioning tools.

Application

s and control outputs

DIP

switches

Remote configuration

via commissioning tools

(factory setting)

2 3

2-pipe fan coil unit

heating or cooling

-pipe on/off

-stage compressor on/off

2 3

-pipe, modulating, 3-position

2 3

2-pipe fan coil unit

with electrical heater

heating or cooling

-pipe with electrical heater on/off

-stage compressor with electrical heater on/off

2 3

4-pipe fan coil unit

heating and cooling

-pipe on/off

Compressor

on/off

2 3

Ordering

Only standard white color (RAL 9003) is available.

Order valve actuators separately.

Product number

Stock number

Designation

RDF302

S55770-T238

Room thermostat

3 / 12

Siemens RDF302 Semi flush-mount room thermostats with RS485 Modbus communications CE1N3079en

Building Technologies 2014-04-04

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Siemens RDF302 User Manual Page 3

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