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Blauberg KOMFORT EC S2B550-E S14

Heat and energy recovery air handling units. Maximum air flow up to 625 m³/h.
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Designation key
  • Accessories
Air handling units for efficient supply and exhaust ventilation in flats, houses, cottages and other buildings.Heat and humidity recovery minimizes ventilation heat losses during cold season and reduce air conditioner load during hot season.Controllable air exchange for creating the best suitable indoor microclimate.Compatible with round Ø125, 160, 200 mm air ducts.  
The casing made of high-quality polymer coated steel, internally filled with a heat- and sound-insulated layer of mineral wool.The spigots are located at the top of the unit, and are rubber sealed for airtight connection to the air ducts.Depending on model, the units are equipped with either hinged sevice panel for easy maintenance operations or separate access for quick filter replacement (KOMFORT EC S(B)200(-E), KOMFORT EC S(B)250(-E)).
High-efficient external rotor EC motors and centrifugal impellers are used for air supply and exhaust.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.Dynamically balanced impellers.
The built-in F7 supply filter and G4 extract filter provide efficient air filtration.KOMFORT EC S(B)200(-E) units are equipped with G3 supply and extract filters.
KOMFORT EC S(B)250(-E) units are equipped with G4 and F7 filters for supply and G4 filters for extract.  
The KOMFORT EC S(B) units have a counter-flow polystyrene heat exchanger that recovers heat.
The KOMFORT EC S(B) -E units have a counter-flow enthalpy membrane heat exchanger that recovers heat and humidity.Due to humidity recovery the enthalpy heat exchanger produces no condensate.The air flows are fully separated within the heat exchangers. Odours and contaminants contained in the extract air are not transferred to the supply air flow.Heat recovery is based on heat and/or humidity transfer through the plates of the heat exchanger. In the cold season supply air is heated in the heat exchanger by transferring the heat energy of warm and humid extract air to the cold fresh air. Heat recovery minimizes heat losses, which reduces the cost of space heating.In summer the heat exchanger performs reverse and intake air is cooled in the heat exchanger by the cooled extract air. This reduces load on air conditioners and saves electricity.

The electronic frost protection system is used to prevent the heat exchanger freezing in cold seasons. Depending on the model either supply fan stop and/or electrical preheating freezing protection is available.
KOMFORT EC S S11 / KOMFORT EC SB S11 units incorporate an integrated control system with the S11 wall-mounted control panel with an LCD display.
KOMFORT EC S S14 / KOMFORT EC SB S14 units incorporate an integrated control system with the S14 wall-mounted control panel with a LED indication. The units are equipped with the Type B USB Connector for advanced options setting in a special software. The standard delivery set includes a 10 m cable for connection of the unit and the control panel.
S11 automation functions:
  • Activating/deactivating the unit.
  • Setting required supply and extract fan speed for the unit air flow control. Each speed is individually adjusted during set-up.
  • Automatic bypass damper opening / closing for summer ventilation.
  • Setting and maintaining room or duct air temperature.
  • Timer turning on/off and timer operation adjustment.
  • Setting day- and week-scheduled operation of the unit.
  • Operation control on feedback from FS1 duct humidity sensor (available separately) or from the humidity sensor in the control panel.
  • Filter clogging indication by motor meter.
  • System shutdown on signal from a fire alarm panel.
  • Controlling supply and exhaust air dampers (available separately).
  • Alarm indication with an error code indication.
  • Cooler control (to be ordered separately). 
S14 automation functions:
  • Activating/deactivating the unit.
  • Air flow control (selecting low, medium or high speed).
  • Bypass damper opening/closing for summer ventilation.
  • Alarm indication.
  • Filter maintenance indication.
Extra functions of the S14 automation with the installed software:
  • Fan speed control from 0 to 100 %. Each speed is individually adjusted for the supply and the exhaust fans.
  • Operation control on feedback from FS2 duct humidity sensor or any other optionally connected sensor as CO2 sensor, IAQ sensor, etc. (not included in the delivery set).
  • Unit operation setting according to external control unit (available as a specially ordered accessory).
  • Temperature setting for freeze protection system activation.
  • Control and operation adjustment of the filter maintenance timer.
  • Error code indication.
  • Remote control unit, bypass and humidity control.
  • Software version upgrading. 
The KOMFORT EC SB and KOMFORT EC SB...-E models are equipped with a 100 % bypass which can be opened if there is a need to cool down the ventilated area with cool intake air.
The units are designed for wall and floor mounting.The access for unit and filter maintenance is available from the front panel.During mounting stage the front and the back panels can be reversed providing either left-handed or right-handed unit mounting.
Parameter KOMFORT EC S2B550-E S14 Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50/60 Hz
Current 2.5 A
Power 370 W
RPM 3230 min-1
Maximum air flow 625 m³/h
Maximum air flow 174 l/s
Sound pressure level at 3 m 30 dBА
Insulation 20 mm mineral wool mm
Transported air temperature -25...+60 °С
Extract filter G4 -
Supply filter F7 (option: G4) -
Heat recovery efficiency 71–88 %
EC motor yes -
Heat exchanger type counter-flow -
Heat exchanger material enthalpy -
Weight 62 kg
Connected air duct diameter 200 mm
Casing material polymer-coated steel -
SEC class A -
Mounting wall mounting, floor mounting -
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 EC S(B)(-E) - data sheet (pdf 1.02Mb)
S14 / S15 automation - software (zip 13.08Mb)
Designation key
Designation key
Serie Motor type Spigot modification Casing modification Bypass Nominal air flow [m³/h] Heat exchanger type Control
KOMFORT EC: electronically commutated motor S: vertical spigot orientation

_: standard
2: insulation 20 mm

_: no bypass
B: integrated bypass
160; 200; 250; 300; 350; 550

_: heat recovery
E: energy recovery

S11: sensor LCD control panel
S14: sensor control panel with LED indication

Model dimensions [mm]
D D1 B H H1 L
KOMFORT EC S2B550-E S14 198 18 566 634 737 810
S14 S11
G3 panel filter
G4 panel filter FP 500x196x40 G4
F7 panel filter FP 500x196x40 F7
Internal humidity sensor FS1
Internal humidity sensor FS2
CO₂ sensor with indication CD-1
CO₂ sensor CD-2
Humidity sensor HR-S
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Electrical preheater EVH-200
Syphon kit SFK 20x32 SFK 20x32
Air damper VKA 200 VKA 200
Electric actuator LF230 LF230
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