Summary; Types; Ordering; Functions - Siemens RDF302/VB Manual

Product no. Stock no.
RDF302 S55770-T238
RDF302/VB S55770-T428
RDF302.B S55770-T416
Use
Features
Siemens
Smart Infrastructure
2.

Summary

2.1

Types

Operating voltage
AC 230 V
AC 230 V
AC 230 V
1) Selectable: ON/OFF or 3-position
2.2

Ordering

Product no. Stock no.
RDF302 S55770-T238
S55770-T416
RDF302.B
S55770-T428
RDF302/VB
For input and output difference between RDF302, RDF302/VB and RDF302.B, see
Connection terminals.
Order valve actuators separately.
2.3

Functions

Fan coil units via ON/OFF outputs:
• 2-pipe system *
• 2-pipe system with electric heater
• 4-pipe system
Chilled / heated ceilings (or radiators) via ON/OFF outputs:
• Chilled / heated ceiling *
• Chilled / heated ceiling with electric heater
• Chilled / heated ceiling and radiator / floor heating
Compressors: via ON/OFF control
• 1-stage compressors in DX type equipment
• 1-stage compressors in DX type equipment with electric heater
* with both ON/OFF or modulating control output
The room thermostats are delivered with a fixed set of applications.
The relevant application is selected and activated during commissioning using one
of the following tools:
• Local DIP switch and HMI
• Modbus commissioning tools
• Operating modes: Comfort, Economy and Protection
• ON/OFF or 3-position control outputs (relay)
• Output for 3-speed or 1-speed fan
• Automatic or manual heating / cooling changeover
RDF302 Basic documentation
Control outputs
3-pos ON/OFF
1 1) 2 1)
1) 1)
1 2
1 1) 2 1)
Designation
Modbus Room thermostat
Basic Modbus room thermostat
Modbus Room thermostat
Suitable
Color
conduit box
square White
square Black
square White
CE1P3079en
2022-06-17
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