Siemens RDF302/VB User Manual

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Siemens RDF302 Basic documentation CE1P3079en
Smart Infrastructure 2022-06-17
2. Summary
2.1 Types
1) Selectable: ON/OFF or 3-position
2.2 Ordering
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
Product no.
Stock no.
Operating voltage
Control outputs
Suitable
conduit box
Color
3-pos
ON/OFF
RDF302
S55770-T238
AC 230 V
1
1)
2
1)
square
White
RDF302/VB
S55770-T428
AC 230 V
1
1)
2
1)
square
Black
RDF302.B
S55770-T416
AC 230 V
1
1)
2
1)
square
White
Product no.
Stock no.
Designation
RDF302
S55770-T238
Modbus Room thermostat
RDF302.B
S55770-T416
Basic Modbus room thermostat
RDF302/VB
S55770-T428
Modbus Room thermostat
Use
Features

Siemens RDF302/VB Specifications

General

Brand	Siemens
Model	RDF302/VB
Category	Thermostat
Language	English