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D E F R O *
360 Defro

DRO H

Recuperator connections: located in a horizontal position
Efficiency: DRO 350 H -350 m³/h DRO 450 H -450 m³/h DRO 550 H -550 m³/h
Energy efficiency class: A
Controller: Defro Air
Efficiency: 87,8%
Standard equipment: The air handling unit is equipped with a unit operation controller with a 4.3" color display, a set of wall brackets.
Optional equipment - for an additional fee: ST-505 internet communication module (LAN) or WiFi RS internet communication module. Additionally, it can be equipped with a CO₂ sensor and an HR humidity sensor. Possibility of using elements for ceiling mounting: mounting console suspended from the heat recovery unit or on a base for the heat recovery unit.

Flow balancing

From the wide range of recuperators on the market, DEFRO AIR units stand out, among others, with the FLOW BALANCING System. The system is crucial for reducing heating costs and, above all, maintaining constant and even air consumption. The airflow process is automatically balanced. It is worth noting that the FLOW BALANCING system is built-in without any additional charges.

Modulating afterheater

Quiet operation

Our recuperators are among the quietest ventilation units available on the market. This is due, among other things, to the use of special EC radial fans dedicated to heat recovery.

50 mm insulation

Thanks to the use of a thick layer of insulation, the air handling unit is protected against condensation of water vapor in the recuperator, and heat losses are virtually eliminated.

Rotary exchanger

Opening from two sides

Our ventilation units have inspection flaps on both sides of the recuperator. This gives us easier access to inspection activities. Possibility of rotating the control unit and universal installation.

Wall mounting console

Set includes - 2 pcs.

DRO H ventilation unit with capacities of 350 m3/h, 450 m3/h, 550 m3/h

  • rotary exchanger with high heat recovery efficiency
  • low-energy EC fans – ensuring low-cost, quiet and reliable operation for many years of operation
  • touch panel included in the price of the heat recovery unit
  • quiet operation thanks to optimally selected components and insulation
  • modern design
  • reversible unit
  • various mounting methods (standing, wall, suspended)
  • wall mounting bracket included
  • Anti-freeze system
  • summer mode

MODEL DRO 350 H DRO 450 H DRO 550 H
Air flow (100 Pa) m3/h 350 450 550
Performance range m3/h
Compress Pa 200 200 200
Type of heat recovery system regenerative regenerative regenerative
Heat recovery efficiency* % 90 89,2 87,8
Energy consumption W 16-230 18-338 18-338
Power supply V 230 230 230
Power of the secondary heater W 1500 1500 1500
Fan power consumption W 166 338 338
Sound power level dB(A) 41 45 47
Connection diameter mm 200 200 200
Connection system horizontal horizontal horizontal
Mass kg 69 69 69
Fuse type WTA 5X20 250V F-10A WTA 5X20 250V F-10A WTA 5X20 250V F-10A
Rated supply voltage and frequency V/Hz 230/50 230/50 230/50
Type of exchanger rotary rotary rotary
Filter class M-5/ePM10 M-5/ePM10 M-5/ePM10
Declared type bi-directional bi-directional bi-directional
Type of drive installed stepless regulation of fan speed stepless regulation of fan speed stepless regulation of fan speed
Declared maximum coefficients in external air leaks % external 0,80 external 0,62 external 0,47
JZE class** A A A
* Test conditions according to PN-EN 13141-7
** according to Regulation (EU) No. 1254/2014

eModul application

The eModul application is an ideal solution for people who live busy lives, often work different hours and lack time for household chores. It has long been known that editing the operating parameters of a heating device depending on your own activities significantly reduces heating bills. Thanks to the application, you can perform the same activities both at home and in the office, all to achieve maximum comfort and efficiency with the lowest possible energy consumption. Using device operating schedules, you can vary the temperature during the day in different time intervals using a laptop, tablet or smartphone, from anywhere on Earth. Using the eModul application, you can lower the temperature at any time if you forgot to do it before going to work or on your way on vacation.

Boiler controller

Functions:

  • central heating mode
  • hot water/summer heating mode
  • hot water priority
  • DHW pre-heating function for a dual-function boiler
  • weather controls
  • room control rooms
  • OpenTherm communication
  • Possibility of control via the Internet
  • clear display
  • intuitive operation

Drivers for installation

i-2 Plus

Functions:

  • control of 2 mixing valves,
  • DHW pump control,
  • ability to control the parameters of the heating device thanks to OpenTherm + communication version 4.0,
  • weather and weekly control,
  • two voltage-free, configurable outputs,
  • two configurable voltage outputs,
  • cooperation with two two-state room regulators,
  • cooperation of the boiler with a room regulator with RS communication,
  • possibility of connecting the ST-505 or WIFI module
  • software update possible via USB port.

i-3 Plus

Functions:

  • control of 3 mixing valves,
  • DHW pump control,
  • two configurable 0-10V outputs,
  • ability to control the parameters of the heating device thanks to OpenTherm + communication version 4.0,
  • weather and weekly control,
  • two voltage-free, configurable outputs,
  • two configurable voltage outputs,
  • cooperation with three two-state room regulators,
  • cooperation of the boiler with a room regulator with RS communication,
  • possibility of connecting the ST-505 or WIFI module
  • software update possible via USB port.

Wifi-OT

Functions:

  • intelligently maintaining room temperature
  • control of the set temperature of the central heating boiler
  • DHW temperature control
  • changing the set boiler temperature based on the outside temperature
  • weather control
  • planik power modulation
  • outdoor temperature preview
  • weekly program for room heating and boiler
  • possibility of two-state control
  • built-in WIFI module – possibility of remote operation via the eModul application
  • the controller operates in the OpenTherm + standard, version 4.0

ST-292 v3

Functions:

  • two-state controller,
  • room temperature control,
  • weekly heating program,
  • day/night program,
  • manual program,
  • OptimumStart function – selection of the optimal boiler activation time in order to achieve thermal comfort, so that the room is heated to the set temperature for a previously set time,
  • heating/cooling function,
  • temporary display backlight,
  • built-in room sensor.

ST-292 v2

Functions:

  • two-state controller;
  • wireless communication;
  • room temperature control;
  • weekly heating program;
  • day/night program;
  • manual program;
  • OptimumStart function – selection of the optimal boiler activation time in order to achieve thermal comfort, so that the room is heated to the set temperature for a previously set time;
  • heating/cooling function.
  • temporary display backlight;
  • built-in room sensor;
  • wireless external sensor (additional option);
  • floor temperature sensor (additional option);
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