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Blauberg CIVIC EC DB 1000 S21 V.2

The CIVIC EC DB V.2 units are designed for single-room ventilation of schools, offices and other public and commercial premises. Air flow up to 1000 m³/h.
  • Description
  • Characteristics
  • Downloads
  • Designation key
  • Dimensions
  • Additional characteristics
  • Accessories

The CIVIC EC DB V.2 units are designed for single-room ventilation of schools, offices and other public and commercial premises. Offer the ideal simple and efficient ventilation solutions for existing and renovated buildings and require no layout of air ducts.
Efficient supply and extract ventilation for separate premises.

EC motors with low energy consumption.Low-noise operation.Simple mounting.


Made of high-quality polymer coated steel, internally lined with heatand sound insulation of mineral wool, cellular synthetic rubber or other materials.Available modifications with an integrated preheater and reheater for cold climate applications.

High efficient electronically commutated motors with external motor and impeller with forward curved blades. Such motors are the most state-of-the-art energy saving solution.EC motors are featured with high performance and total speed controllable range. High efficiency reaching 90 % is the premium advantage of the electronically commutated motors.


Exhaust cassette filter: ISO Coarse >60 % (G4).Supply cassette filter: ISO ePM1 60 % (F7)


The units are equipped with a bypass. The bypass damper opens for free cooling ventilation mode in summer.

The CIVIC EC DB S21 V.2 units are equipped with an integrated automation system.
The S21 controller allows integrating the unit into the BMS (Building Management System).
The unit can be controlled by the Blauberg Home mobile application via Wi-Fi.

Downloadthe Blauberg Homeapp for Android Downloadthe Blauberg Homeapp for iOS

The automatic supply and extract air dampers are used to prevent uncontrollable air draughts during the unit standstill.



  • CIVIC EC DBE V.2 and CIVIC EC DBE2 V.2 units are equipped with an electric preheater which protects the heat exchanger from freezing.


  • CIVIC EC DBE2 V.2 units feature an electric reheater to raise the supply air temperature.

The CIVIC EC DB V.2 unit has a counter-flow heat exchanger made of polystyrene.

• In cold season the heat energy of the extract air flow is absorbed by intake air flow, thus decreasing the heat losses caused by ventilation. Condensate generated during heat recovery is collected in a drain pan and removed through the drain pipes to the sewage system.

• In warm season the heat of the outdoor air is absorbed by extract air flow. This way the supply air temperature decreases and heat recovery reduces operation loads for the air conditioner.



Unit control via Wi-Fi using the mobile application +
Unit control via remote control panel
S22 control panel (option)
Unit control via remote wireless 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
Speed switch +
Filter replacement indication by filter timer
Alarm indication full alarm description in the mobile application
Week scheduled operation +
Bypass automatic
Timer +
Boost mode +
Fireplace mode +
Freeze protection using cyclical stops of the supply fan
using preheating (option)
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: the functionality is available when purchasing the appropriate accessory (seethe "Accessories" section)

Cold outside air flows through the filters and heat exchanger and is moved to the room with a supply centrifugal fan.Warm polluted air from the premise flows through the filter and the heat exchanger and is exhausted outside with an extract centrifugal fan through an air duct in the wall.

Parameter CIVIC EC DB 1000 S21 V.2 Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50/60 Hz
Reheater power consumption - W
Max. unit current without electric heater 1.85 A
Max. unit current with electric heater - A
Preheater power consumption - W
Maximum air flow 278 l/s
Maximum air flow 1000 m³/h
Max. unit power without an electric heater 267 W
Sound pressure level at a distance of 1 m 34 dBА
Sound pressure level at 3 m 24 dBА
Transported air temperature -25...+40 °С
Heat recovery efficiency 83…93* %
EC motor yes -
Heat exchanger type counter-flow -
Functions Wi-Fi, Filter replacement indication, Timer, Weekly schedule, External sensor connection -
Heat exchanger material polystyrene -
Connected air duct diameter 315 mm
Heating without heating -
Casing material polymer-coated steel -
Type Supply and exhaust -
SEC class A+ -
Weight 252 kg
Mounting ceiling mounting -
* Heat recovery efficiency is specified in compliance with EN 13141-8 -
Documents archieve
Documents archieve
Select a document type
  • Catalogues
  • Technical documentation
  • Certificates
S21 - user's manual (pdf 611.32Kb)
S25 - user's manual (pdf 4.3Mb)
Modbus table for connecting S21 automation to BMS - user's manual (pdf 137.99Kb)
CIVIC EC DB 1000 V.2 - user's manual (pdf 6.07Mb)
CIVIC FMM 1000 - installation instruction (pdf 1.46Mb)
CIVIC EC DB V.2 - data sheet (pdf 1.39Mb)
CIVIC EC DB V.2 - image (png 205.78Kb)
Designation key
Designation key
Model Motor type Mounting Bypass Heater Drain pump* Rated air flow [m³/h] Control Modernization
CIVIC EC: synchronous electronically commutated motor D: Suspended mounting, horizontally oriented spigots;
D1: Suspended mounting, vertically oriented spigots
B: with bypass

_: without heater
E: preheating
E2: preheating + reheating

_: without drain pump
with drain pump

300; 500; 1000 S21 V.2: second modernized generation

* The CIVIC EC DB... 1000 S21 V.2 units are equipped with a drain pump by default.


Additional characteristics
Additional characteristics
Point Total power of the unit [W] Total sound pressure level at 3 m (1 m) [dBA]
1 260 24 (34)
2 251 23 (33)
3 235 23 (33)
4 221 22 (32)
5 136 17 (27)
6 130 17 (27)
7 125 16 (27)
8 120 16 (27)
9 47 11 (21)
10 45 11 (21)
11 44 11 (21)
12 42 11 (21)


Sound power level,
Total Octave frequency band [Hz] LpA, 3 m LpA, 1 m 
63 125 250 500 1000 2000 4000 8000
LwA to environment @ point 1 [dBA] 45 31 37 40 37 36 36 29 18 24 34
LwA to environment @ point 5 [dBA] 37 26 29 32 29 29 29 24 15 17 27
LwA to environment @ point 9 [dBA] 32 21 26 20 25 19 20 25 18 11 21
  CIVIC EC DB 1000 S21 V.2
CIVIC EC DBE 1000 S21 V.2
CIVIC EC DBE2 1000 S21 V.2
Extract filter ISO Coarse >60 % (G4) FP 654x480x48 G4
Supply filter ISO ePM1 60 % (F7) FP 654x480x48 F7
Outer grill VDA 315 CFn Al
Control panel S22
Wi-Fi control panel S22 Wi-Fi
LCD Control panel S25
 VOC sensor DPWQ30600
CO₂ sensor DPWQ40200
Humidity sensor DPWC11200
CO₂ sensor with indication CD-1
CO₂ sensor CD-2
CO₂ sensor CD-3
Internal humidity sensor FS2
Humidity sensor HR-S
Syphon kit SFK 20x32
Drain pump CP-2
Modul of vertical duct connection VDC Civic 1000 DB