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Blauberg KOMFORT Roto EC LW 2000-2 S17

Air handling unit with rotary heat exchanger. Maximum air flow up to 2250 m³/h.
EAN codeEAN4058448036385
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Designation key
  • Accessories
  • Dimensions

Air handling units for efficient supply and exhaust ventilation in flats, houses, cottages and other buildings. Used to create controlled energy-saving ventilation systems. The heat recovery technology is used to minimize ventilation heat losses. Control of air exchange for creating comfortable indoor microclimate. Compatible with round Ø 160, 250 or 315 mm air ducts. KOMFORT Roto EC LE/LW 2000 are designed for connection to 500x300 mm rectangular air ducts.


KOMFORT Roto EC LE – model with electric heater. KOMFORT Roto EC LW – model with water heater. The casing is made of double-skinned aluzinc panels, internally filled with 20–25 mm mineral wool layer for heat- and sound-insulation. The casing has mounting brackets with anti-vibration rubber mounts for easy installation. The spigots are located at the sides of the unit and are equipped with rubber seals for airtight connection to the air ducts. The hinged side panels ensure easy access to the internals for service works including cleaning, filter replacement, etc.



The unit is equipped with high-efficient external rotor EC motors and centrifugal impellers with backward curved blades. EC motors have the best power consumption to air flow ratio and meet the latest demands concerning energy saving and high-efficient ventilation. EC motors are featured with high performance, low noise level and totally controllable speed range. The impellers are dynamically balanced.


The built-in G4 supply filter and G4 extract filter provide air filtration.


The unit has a high-efficient rotary aluminium heat exchanger. The rotary regenerator is a short, rotating cylinder, filled with corrugated aluminium sheet layers. The air streams flow through them. The band layers of the heat regenerator first come in contact with the supply and then with extract air flows. Therefore the band is alternatively warmed up and cooled down and the extract air heat and humidity are transferred to the cold intake air. This way heat recovery reduces heat losses in the cold season and reduces operation load for air conditioner in the warm season. The advantages of the rotary regenerator as compared to the plate heat exchangers include no condensate generation, maintaining comfort air humidity and high freeze resistance.


The unit can be installed on the floor, suspended to the ceiling or fixed to the wall by means of mounting brackets. The correct mounted unit must provide condensate collecting and drainage and free access to the hinged side panel for servicing and filter replacement. Access on the left side.


The integrated heater is activated to warm up supply air flow if set indoor air temperature may not be reached by means of heat recovery only. KOMFORT Roto EC LE are equipped with an electric heater for operation at low outside temperatures.

  • Smooth electric heater output control ensures automatic maintenance of supply air temperature.
  • For overheating protection the electro heater is equipped with two built-in thermal switches: with +60 °C operating temperature, automatic restart, and with +90 °C operating temperature, manual restart.

KOMFORT Roto EC LW are equipped with a water (glycol) heater for operation at low outside temperatures.

  • Smooth water heater control ensures automatic maintenance of supply air temperature.
  • The air temperature sensor downstream of the heater and the return water temperature sensor are used for freezing protection of the water heater.
  • Water heaters are designed for operation with maximum operating pressure of 1 MPa (10 bar) and maximum heat medium operating temperature +95 °C.
  • The spigots of water heater are located on service panel side.

KOMFORT Roto EC LE…S17 and KOMFORT Roto EC LW…S17 are equipped with the th-Tune control panel.

KOMFORT Roto EC LE…S18 and KOMFORT Roto EC LW…S18 are equipped with the pGD1 control panel.

Automation functions:

  • Fan speed selection: low, high or medium.
  • Speed setting from 0 to 100 % for supply and exhaust fans separately
  • Filter maintenance indication
  • Alarm indication
  • Timer-based operation of the unit
  • Week-scheduled operation of the unit
  • Control and regulation of supply air temperature
  • CCU controlling
  • Air damper actuator controlling
Parameter KOMFORT Roto EC LW 2000-2 S17 Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50/60 Hz
Motor max. power 2 items x 448 W
Max. unit current with electric heater 5 A
Max. unit power with electric heater 1070 W
RPM 3000 min-1
Maximum air flow 625 l/s
Maximum air flow 2250 m³/h
Sound pressure level at 3 m 64 dBА
Transported air temperature -25...+40 °С
Insulation 25 mm mineral wool mm
Extract filter G4 -
Supply filter G4 -
Heat recovery efficiency 68–93 %
Heat exchanger type rotary -
Heat exchanger material aluminum -
Connected air duct diameter 500x300 mm
Casing material aluzinc -
ErP 2016, 2018 -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air capacity:
  • Pressure:
Operating point
  • Air capacity: --
  • Pressure: ---
Documents archieve
Documents archieve
Select a document type
  • Catalogues
  • Technical documentation
  • Certificates
KOMFORT Roto EC LE/LW - data sheet (pdf 2.27Mb)
KOMFORT Roto EC LE/LW S17 - image (png 612.98Kb)
KOMFORT Roto EC LE/LW - user manual (pdf 8.61Mb)
Designation key
Designation key
Series Unit type Motor type Spigot modification Heater type Rated air flow [m³/h]   Heater parameters Control
KOMFORT Roto: rotary heat exchanger EC: electronically commutated motor L: horizontal spigot orientation E: electric heater
W: water heater
400; 700; 900; 1200; 1500; 2000 2; 3.3; …: heater power [kW] (electric heater)
2: heater rows (water heater)
S17: thTune control panel
S18: pGD1 control panel
    KOMFORT Roto EC LW 2000-2 S17
G4 extract panel filter FP 800x477x47 G4
G4 supply pocket filter FPT 800x477x27 G4
Water mixing unit WMG 1-6
Backdraft air damper VRVS 500x300
Air damper VK 500x300
VOC sensor DPWQ30600
External CO₂ sensor DPWQ40200
Humidity sensor DPWC11200
Humidity sensor HR-S
Humidity sensor FS2
Electric actuator TF230

Model Overall dimensions [mm]
B B1 H L X Y
KOMFORT Roto EC LW 2000-2 S17 875 630 1010 1485 500 300
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