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Blauberg KOMFORT EC LBE 700 S21


Heat recovery air handling unit. Maximum air flow up to 830 m³/h.
EAN codeEAN4058448061820
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Designation key
  • BIM
  • Accessories
  • Dimensions
  • Additional characteristics
Description
Description
FEATURES

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, 200 or 250 mm air ducts.

DESIGN

The casing is made of double-skinned aluzinc panels, internally filled with mineral wool layer 40 mm for heat- and sound-insulation. The casing has mounting brackets with anti-vibration rubber mounts for easy installation. The unit is equipped with service hatches on the side panels for easy maintenance of filters. This design enables the left-hand and right-hand installation of the unit. The spigots are located at the sides of the unit and are equipped with rubber seals for airtight connection to the air ducts.

 

FANS

High-efficient external rotor EC motors and centrifugal impellers are used for air supply and exhaust. The forward curved blades in KOMFORT EC LB(E) 300/LB(E) 400 provide permanent air flow. The KOMFORT EC LB(E) 700 model has impellers with backward curved blades. EC motors have the best power consumption to air capacity 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.

HEAT RECOVERY

The KOMFORT EC LB(E)… unit is equipped with a plate counter-flow polystyrene heat exchanger for heat recovery. The unit condensate is collected and drained to the drain pan under the heat exchanger.The KOMFORT EC LB(E)…-E unit is equipped with an enthalpy plate counter-flow heat exchanger for energy (heat and humidity) recovery. Due to humidity recovery condensate is not generated in the enthalpy heat exchanger. The air flows are completely separated in the heat exchanger. Thus smells and contaminants are not transferred from the extract air to the supply air. Heat recovery is based on heat and/or humidity transfer through the heat exchanger plates. 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 ventilation heat losses and heating costs respectively. In the warm season the heat exchanger performs reverse and intake air is cooled in the heat exchanger by the cool extract air. That reduces operation load on air conditioners and saves electricity.

AIR FILTRATION

Two built-in G4 and F7 filters provide efficient supply air filtration. The G4 filter is used for extract air filtration.

AIR HEATER

The KOMFORT EC LBE S21 units are equipped with an electric heater for additional heating of supply air downstream of the heat exchanger. The KOMFORT EC LB S21 units are not equipped with built-in heaters but both a preheater and a reheater can be purchased separately.

  BYPASS

The KOMFORT EC LB(E) S21 model is equipped with a bypass which is automatically opened in summer if there is a need to cool down the ventilated area with cool intake air. If the unit is equipped with an electric heater, the bypass is used for freeze protection of the heat exchanger.

MOUNTING

Mounting on floor or ceiling with fixing brackets. The correct mounted unit must provide condensate collecting and drainage as well as access to service mounting and filter replacement.

CONTROL AND AUTOMATION

KOMFORT EC LB… S21 units are equipped with an integrated automation system. The remote control panel is not included in the delivery set (purchased separately). The S21 controller allows integrating the unit into the Smart Home system or BMS (Building Management System). The unit can be controlled via the Blauberg AHU mobile application via Wi-Fi.

Download
the Blauberg AHU
app for Android

Download
the Blauberg AHU
app for iOS

AUTOMATION FUNCTIONS
Functions KOMFORT EC LB(E) S21  
Unit control via Wi-Fi using a mobile application +  
Unit control via a wired remote control panel
S22 control panel (option)
 
Unit control via a wireless remote control panel
S22 Wi-Fi control panel (option)
 
Unit control via a wired remote LCD control panel
S25 control panel (option)
 
BMS (Building Management System) RS-485  
Wi-Fi  
Ethernet  
MODBUS (RTU, TCP)  
Blauberg Cloud Server service +  
Speed selection +  
Filter replacement indication by hour meter readings  
by filter clogging differential pressure switch  
Alarm indication full alarm description in the mobile application  
Week-scheduled operation +  
Bypass automatic  
manual  
Timer +  
Boost mode +  
Fireplace mode +  
Freeze protection through cyclic stops of the supply fan  
through preheating (option)  
using a bypass  
Reheater connection option  
Cooler connection option  
Minimum supply air temperature control +  
Humidity control option  
CO2 control option  
VOC control option  
PM2.5 control option  
Fire alarm sensor connection option  
Option: function is available when purchasing the appropriate accessory (see the "Accessories" section).
Characteristics
Characteristics
Parameter KOMFORT EC LBE 700 S21 Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50/60 Hz
Max. power without electric heater 336 W
Max. unit current without electric heater 2.4 A
Max. unit power with electric heater 3936 W
Max. unit current with electric heater 18.0 A
Electric heater power 3600 W
Electric heater current 15.6 A
Maximum air flow 231 l/s
Maximum air flow 830 m³/h
Sound pressure level at 3 m 31 dBА
Insulation 40 mm mineral wool mm
Transported air temperature -25…+40 °С
Extract filter G4 -
Supply filter G4, F7 -
Heat recovery efficiency 80–98 %
Heat exchanger type counter-flow -
Heat exchanger material polystyrene -
Weight 108.4 kg
Connected air duct diameter 250 mm
Casing material galvanized steel -
SEC class A+ -
Mounting ceiling mounting, floor mounting -
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
Name
KOMFORT ЕС LB(E) - data sheet (pdf 1.68Mb)
KOMFORT ЕС LB - user's manual (pdf 4.31Mb)
KOMFORT ЕС LB ... S21 - image (png 412.53Kb)
KOMFORT EC LBE700 S21 - energy label (pdf 52.23Kb)
KOMFORT EC LBE700 S21 - specification (pdf 34.9Kb)
S21 - user's manual (pdf 611.32Kb)
Modbus table for connecting S21 automation to BMS - user's manual (pdf 137.99Kb)
Designation key
Designation key
Series Motor type Spigot modification Bypass Heater type Rated air flow, [m³/h] Heat exchanger type Control
KOMFORT EC: electronically commutated motor L: horizontal spigot orientation B: with a bypass _: without a heater
E: electric heater
300; 400; 700 _: heat recovery
E: energy recovery
S21
BIM
BIM

Accessories
Accessories
    KOMFORT EC LBE 700 S21
Panel filter G4 FP 784х253х48 G4
Panel filter F7 FP 784х253х48 F7
Control panel S22
Wi-Fi control panel S22 Wi-Fi
LCD control panel S25
Indoor humidity sensor FS2  
CO₂ sensor with indication CD-1
CO₂ sensor CD-2
Humidity sensor HR-S
Preheater EVH 250 S21 V.2
Silencer SD 250 S21 V.2
Non-return valve VRV 250
Air damper VKA 250
Drain pump CP-2
Air damper actuator TF230
Dimensions
Dimensions

Model Overall dimensions [mm]
Ø D B B1 H L L1
KOMFORT EC LBE 700 S21 247 866 700 601 1282 1379
Additional characteristics
Additional characteristics
Point Power [W] Sound pressure level at 3 m (1 m) [dBA]
1 336 31 (41)
2 336 30 (40)
3 336 29 (39)
4 123 25 (35)
5 115 25 (35)
6 96 24 (34)
7 41 23 (33)
8 38 23 (33)
9 36 20 (30)

 

Sound power level, A-weighted Total Octave band [Hz] LpA 3 m LpA 1 m
63 125 250 500 1000 2000 4000 8000
LwA to supply inlet [dBA] 76 56 61 61 73 69 69 64 57    
LwA to supply outlet [dBA] 60 49 53 52 56 51 44 34 26    
LwA to exhaust inlet [dBA] 74 56 60 65 70 66 68 64 56    
LwA to exhaust outlet [dBA] 61 42 53 56 56 52 49 37 25    
LwA to environment [dBA] 51 35 40 43 49 39 40 37 32 31 41

Data for point 1 in the performance diagram

 

Calculation of air temperature downstream of the heat exchanger:
t = toutd + khr × (textr - toutd) / 100,

where toutd – outdoor air temperature [°C] textr – extract air temperature [°C] khr – heat exchanger efficiency (according to the diagram) [%]