Basic Info.
Model NO.
RDF302 RDF300.02 RDF310.2/MM RDQ411MB
Structure
Double-Eccentric Sealing
Work Pressure
High Pressure (10.0mpa< Pn <80.0mpa)
Working Temperature
Medium Temperature (120°C<T<450°C)
Material of Seal Surface
Soft Sealed
Application
Industrial Usage, Water Industrial Usage, Household Usage
Product Description
Flush-mounted room
thermostats with RS485
Modbus communications
RDF302
RDF302.B
RDF302/VB delisting alternative model RDQ411MB
For 2-pipe, 2-pipe with electrical heater, and 4-pipe fan coil units
For use with compressors in DX type equipment
· AC 230 V operating voltage
· Large display with Backlight
· On/off or 3-position control
· Automatic or manual fan speed control
· 1-speed or 3-speed fan selection
· Operating modes: Comfort, Economy and Protection
· Control depending on the room or the return air temperature
· Automatic or manual heating/cooling changeover
· Minimum and maximum limitation of room temperature setpoint
· Commissioning and control parameters via local HMI or RS485 Modbus
· RS485 communicative interface in Modbus RTU slave mode
· Mounting on recessed square conduit box, 60.3 mm fixing centers
· User and parameter settings can be retained or restored with power loss
RDF302 & RDF302/VB Only
· 2 multifunctional inputs for keycard contact, external sensor, etc.2 / 18
Siemens
RDF302… Flush-mounted room thermostats with RS485 Modbus communications
CE1N3079en
Smart Infrastructure
2020-02-21
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 electrical heater
4-pipe fan coil units
Compressors in DX-type equipment
Compressors in DX-type equipment with electrical heater
The RDF302, RDF302/VB and RDF302.B controls:
One single or 3-speed fan
One or two on/off valve actuators
One on/off valve actuator and one 1-stage electrical heater
One 3-position valve actuator
One 1-stage compressor in DX-type equipment, or one 1-stage compressor with
electrical heater
Used in systems with:
Heating or cooling mode
Automatic heating/cooling changeover
Manual heating/cooling changeover
Heating and cooling mode (e.g. 4-pipe system)
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
Functions
Maintain room temperature via built-in temperature sensor or external room
temperature/return air temperature sensor
Changeover between heating and cooling mode (automatic changeover via local
sensor/bus or manual changeover)
Select application via DIP switches or commissioning tools
Select operating mode via operating mode button on the thermostat
Single speed or 3-speed fan control (automatic or manual)
Display current room temperature or setpoint in °C and/or °F
Minimum and maximum limitation of room temperature setpoint
Key lock (automatic, manual or via bus)
Two multifunctional inputs, freely selectable for:
- Operating mode switchover contact (keycard)
- Automatic heating/cooling changeover sensor
- External room temperature sensor or return air temperature sensor
- Dew point sensor
- Electrical heater enabled
- Fault input
- Monitor input for temperature sensor or switch status
Advanced fan control function, e.g. fan kick, fan start, selectable fan operation
(enable, disable or depending on heating or cooling mode)
Purge function together with 2-port valve in a 2-pipe changeover system
Reminder to clean filters3 / 18
Siemens
RDF302… Flush-mounted room thermostats with RS485 Modbus communications
CE1N3079en
Smart Infrastructure
2020-02-21
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
Address:
4th Floor, Building 07, No. 108 Ganjiabian East, Yaohua Street, Qixia District, Nanjing City, Nanjing, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Instruments & Meters, Tools & Hardware
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000
Company Introduction:
Our company has been the agent of Siemens Building Business Unit for 20 years. Our main products include sensors, controllers, valves, etc. Of Siemens, KIMO, Setra, Vaisala, E+E and other brands. For more information, please contact our customer service or email for consultation!
Detailed information such as product model and delivery time! For more information, please contact our online customer service or send an email for consultation!