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domat UI300 

12/2019 Subject to technical changes. 

 

 

UI300 

Communicative room unit 

 

 

 

 

 

 

 

 

Summary 

UI300 is communicatiove room unit with analogue input for PT1000 sensor, with 
temperature sensor, humidity sensor, and control knob for setpoint control and 
other  settings.  The  binary  output  is  controlled  either  on  a  remote  basis,  or  as 
thermostat,  hygrostat.  The  units  communicate  over  Modbus  RTU  /  RS485  and 
they can be used as open system components with majority of building control 
system and controllers.  
 
Different versions of unit may contain display, backlight and knob: 
 
UI300 

 basic version with display and knob 

UI300BL 

version with knob and display with backlight 

UI300DK 

 version without knob and display 

 

Application 
 

 

Air handling units and air condition in rooms with variable load 

 

schools, cinemas, lecture halls etc. 

 

Systems with water or electrical floor heating 

 control and measuring of 

room temperature 

 

Monitoring and recording of temperature indoors 

Function 

The  units  acquire  temperature,  and  relative  humidity  in  the  room,  temperature 
correction (controlled by the knob) and required operation status which is set by short 
push of the knob or in the menu. In the configurable menu following values can be set 
and displayed: 
 

 

temperature, actual temperature correction 

 

humidity (actual value only at room units containing the humidity sensor) 

 

time (only display at room units with RTC) 

 

basic setpoint - day 

 

basic setpoint - night 

 

outside temperature for heating enable 

 

DHW temperature 

 

heating curve type (1...4) 

 

operation mode  (Residential with Day, Night, Time  schedule, Off, or Hotel / 
Office with Comfort, Standby, Party, Off) 

Summary of Contents for UI300

Page 1: ...plication Air handling units and air condition in rooms with variable load schools cinemas lecture halls etc Systems with water or electrical floor heating control and measuring of room temperature Monitoring and recording of temperature indoors Function The units acquire temperature and relative humidity in the room temperature correction controlled by the knob and required operation status which...

Page 2: ...g actual temperature and humidity The unit Modbus address and functionality is defined over the RS485 interface with service software ModComTool which is free for download at http domat int com en downloads software To interface the room unit to the computer use the USB 485 converter M080 RS232 RS485 converter R012 or any suitable RS485 converter ___________________________________________________...

Page 3: ...perature sensor Pt1000 2 AGND exteral temperature sensor Pt1000 3 DI1 input presence window 4 DO1 output for heating valve 5 G0 power outputs common point 6 G0 power outputs common point 7 G power 8 K communication RS485 9 K communication RS485 DIP switches Back of the PCB BUS END if ON the bus is terminated if last device on the line USR not used reserved for future applications INIT sets the con...

Page 4: ...by 2 or 4 screws to any flat surface or a flush mounting box Ø 50 mm At the back of the bottom there is an aperture for cabling The bottom should be installed and cabling connected first and the upper part inserted after the construction works have been finished to prevent damage to the unit Seal the conduits to avoid influencing the sensor by draught Use insulating pad when installing the sensor ...

Page 5: ...escription User manual for domat exe and detailed description of the room unit functions find in the document Room units configuration User manual Display A large 60 x 60 mm display clearly shows actual room temperature and controller status with 7 segment digits and standard Day Night Off and Time scheduler symbols Active output is indicated by a heating symbol In the upper part there are week da...

Page 6: ...ditioning systems It must not be used for protection of persons against health risks or death as a safety element or in applications where its failure could lead to physical or property damage or environmental damage All risks related to device operation must be considered together with design installation and operation of the entire control system which the device is part of ...

Page 7: ...domat UI300 12 2019 Subject to technical changes 7 Changes in versions 09 2019 First datasheet version 12 2019 I O position corrected ...

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