Flush-Mounted Room Thermostats Modbus Communications Rdf302

• Customization: Available
• Transport Package: Box
• Specification: RDF302
• Model NO.: RDF302
• Trademark: SIEMENS
• Origin: China

Product Description

Room thermostats for fan coils

RDF302 Flush-mount room thermostat for rectangular conduit box with Modbus communications, 2-/4-pipe fan coils or DX type equipment

1. Modbus communications
2. For heating and/or cooling applications
3. 2 or 3-position control outputs
4. Output for 1-speed or 3-speed fan
5. 2 multifunctional inputs for keycard contact, external room / return air temperature (QAH11.1, QAA32), heat / cool changeover, operation mode changeover, window contact on/off, dewpoint monitor, electrical heater enabled, fault contact
6. Operating modes: Comfort, Economy and Protection
7. Automatic or manual heating/cooling changeover
8. Adjustable commissioning and control parameters
9. Minimum and maximum setpoint limitation
10. Color of housing: signal white (RAL 9003)
11. Backlit display

Application selectable:

 

1. 2-pipe system
2. 2-pipe system with electrical heater
3. 4-pipe system

Operating voltage         AC 230 V
Power consumption       7 VA
Setpoint setting range     5...40 °C
Switching differential      0.5…6 K
Communication           Bus: Modbus RTU (RS 485)
Analog inputs, number     2
Relay outputs             Fan: N.O. contacts, non-floating , Valve: N.O. contacts, non-floating
Relay outputs, number     5
Relay output, switching voltage   A C 230 V
Relay output, switching current    5 (2) A
Type of fixing                      Recessed rectangular conduit box BS4662 with fixing centres of 60.3 mm
Degree of protection               IP30
Dimensions (W x H x D)           86 x 86 x 57 mm