Small range AHU controller UNIBOX Lite Dasko Electronic

Compatible with room panel DEN15-C, DEN16-C and DEN 17-C.
UNIBOX Lite is basis version of UNIBOX v3.41 controller.

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Symbol Dasko Electronic
Profile: Manufacturer, Installer, Designer
Headquarters: PL
Establishment date: 2005
Business area: Europe
Assortment: Regulators, Controllers, Projects, Ventilation, Recupreation
Target: Looking for a British manufacturer of compact air handling units
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Product descritipion

UNIBOX Lite is controller for recuperators and air handling units

  • controller for heat recovery systems and small size AHU
  • compatible with room panels DEN 15-C, DEN 16-C and DEN 17-C
  • provides power supply and individual fuse protection of supply and exhaust fan
  • additional communication port with MODBUS RTU protocol enables connecting the controller to BMS installation and remote monitoring and control of the AHU

UNIBOX Lite description

Automation system based on the UNIBOX Lite control unit is dedicated to small and medium-sized air handling units.
The advanced control algorithm with a total number of six temperature sensors enables highly efficient heat recovery
from air extracted from premises. Use of electronically commutated EC or classic AC motors cooperating with dedicated
DSS2 series speed regulators or inverters also enables also to smoothly adjust the fan speed over the entire control range.

Small size of the UNIBOX Lite main board allows to place the main control system inside of the air handling unit or in the
housing nearby (e.g. under suspended ceiling), while a small and esthetically finished panel can be placed in any premise,
which simplifies handling and improves comfort. Using MODBUS RTU protocol enables connecting the driver to BMS
installation and remote monitoring and control of the recuperator.

UNIBOX Lite application

Due to the modular construction and a large number of configurable parameters, the system supports a combination
of modules, such as: intake and exhaust air dampers, a ground heat exchanger, electric pre-heater, a mixing chamber,
counterflow heat exchanger, electric heater/water heater and water cooler/DX type cooler.

UNIBOX Lite technical data

power supply: 230 VAC
communication: - Communication interface RS485 for panels DEN 15-C, DEN 16-C and DEN 17-C
- Communication interface RS 485 MODBUS RTU for external controllers or building automation systems (BMS)
- Communication interface SPI for UNIBOX-EXTENDER
auxiliary supply outputs: - 250VAC supply with 2.5A fuse protection for supply fan
- 250VAC supply with 2.5A fuse protection for exhaust fan
- auxiliary 12VDC supply for panels DEN 15-C, DEN 16-C or DEN 17-C
output signals: - 2 x analogue outputs 0-10V
- 2 x PWM output by open-collector transistor
relay outputs: - 3 x relay outputs with non-voltage contact
input signals: - 4 x digital inputs
- 1 x universal input
mounting: 6 x mounting through holes
run and alarm states indication: Yes
temperature sensors: 5 x digital DS 18B20
control method: remotely by DEN 15-C, DEN 16-C and DEN-17C panels
IP protection rate: IP 00
dimensions (WxHxL) mm: 40 x 115 x 120

UNIBOX Lite electric safety

The control system must be supplied in accordance with the wiring diagram and secured with over-current protection
switch appropriate to the power of supplied fans.

If power to the fans is supplied directly from the UNIBOX Lite board, they are protected with:

  • upply fan motor: T2.5A (max 5A), protection fuse F4 (on UNIBOX Lite board)
  • exhaust fan motor: T2.5A (max 5A), protection fuse F3 (on UNIBOX Lite board)

UNIBOX Lite Communication

Automation system allows communication with BMS via MODBUS RTU protocol.
Protocol parameters:

  • possibility of addressing up to 15 devices on a single sub network
  • transmission rated speed of 9600/19200 bps
  • possibility to read device parameters: fan speed set-point, measured temperature values, status of digital inputs
    and outputs
  • possibility to set operating parameters: start/stop signal, fan speed set-point, temperature set-point and mode

Detailed data of the MODBUS protocol can be found in the appendix

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