Aeronom room air system

WRG 300 DC

No longer available for delivery
Article number: 0082.0048
Manufacturer: MAICO
Compact ventilation system with very efficient heat recovery
Application examples: Low-energy house
WRG 300 DC IM0016128.PNG Compact ventilation system with very efficient heat recovery

Characteristic curve

Dimensioned drawing

WRG 300 DC - Dimensioned drawing [mm]

  1. Supply air
  2. Outgoing air
  3. Exhaust air
  4. Outside air
  5. Electrical connection
  6. Condensation connection

Technical data

WRG 300 DC - Technical data

Article WRG 300 DC
Rotating speed 2.070 1/min
Speed controllable
Type of voltage Alternating current
Rated voltage 230 V
Installation site Cellar
Housing material Sheet steel, galvanised
Colour Pearl white, similar to RAL 1013
Weight 31
Filter class G3
Connection diameter 150 mm
Airstream temperature at IMax 50 °C
Degree of heat provision 90 %
Heat exchanger construction type Condensation rotor
Packing unit 1 piece
Range K
GTIN (EAN) 4012799820482
Article number 0082.0048


WRG 300 DC - Accessories

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Air filter, replacement WRF 300 DC 0093.0023 on request
  • On the notes
Room air control RLS 2 F 0157.0806 on request
  • On the notes
Room air control RLS 3 0157.0831 on request
  • On the notes
Summer cassette SK 300 Plus No longer available for delivery 0180.0924 on request
  • On the notes

General accessories

Product type Name Art. No. Price*(EUR) Action
Roof outlet DF - - -
Roofing tile DP - - -
Mounting clamp BS - - -
Rain protection grille RG - - -
Shutter AP 150 0059.0952 on request
  • On the notes
External grille SG 15 0059.0904 on request
  • On the notes
Tubular sound absorber RSR 15/50 0092.0323 on request
  • On the notes
Electrical air heater ERH 16-2 0082.0102 on request
  • On the notes
Water air heater WRH 16-2 0082.0118 on request
  • On the notes
Air flow monitor LW 9 0157.0779 on request
  • On the notes
Air quality controller EAQ 10/1 0157.0777 on request
  • On the notes
Air filter TFE 15 No longer available for delivery 0149.0048 on request
  • On the notes
DS 3 No longer available for delivery 0157.0185 on request
  • On the notes

Product description


WRG 300 DC

short description

Compact ventilation system with very efficient heat recovery

Product description


  • Special energy savings due to DC motors having a constant volumetric flow.
  • With sound insulated fans for especially quiet running.
  • With automatic volumetric flow regulation for constant air quantities.
  • Inner coating of heat resistant synthetic material, non-hygroscopic.
  • Easy filter change.
  • With two integrated filters, filter change is possible without tools.
  • 4 DN 150 duct connections on the upper side of the unit.

Heat exchanger

  • Counterflow plate heat exchanger made of synthetic material (PETG).
  • The heat exchanger can be removed easily once the front plate has been unscrewed.
  • Separate air flows, separation by means of heat exchanger plates.
  • Easy cleaning of the heat exchanger with water and a mild detergent.

Anti-frost protection

  • Guaranteed anti-frost protection ensures that the heat exchanger does not freeze.
  • The frost protection feature switches the supply air fan off when the outgoing air temperature is too low.
  • Heat recovery systems combined with earth heat exchangers or an electric frost protection feature to also ensure perfect operations at low temperatures. In the winter, the earth heat exchanger also guarantees extra heating power and in the summer, extra cooling power.

Heat recovery fan

  • 2 centrifugal DC fans, one fan each for supply air and exhaust air.
  • Fans with centrifugal impellers curved to the front.
  • 3 ventilation steps: 1 = economy setting, 2 = normal, 3 = high.
  • Within each vetilation step, the volumetric flow can be adjusted in pre-set steps.
  • Step 1: 50 / 80 / 115 / 125 m3/h.
  • Step 2: 135 / 160 / 190 / 205 m3/h.
  • Step 3: 225 / 260 m3/h.

Mounting instructions

  • With bracket for wall installation, feet for floor installation.
  • Installation on the wall or a pedestal is required to ensure access to the condensation connection.
  • Housing covers can be unscrewed.
  • Provide sound absorbers on the inlet and outlet sides.

Electrical connection

  • When delivered, the device is assembled and ready for service.

Condensation drain

  • Condensation is drained out at the bottom of the unit. Condensation drainage (½" internal thread) for connection to a drain trap.

Table of contents

Wiring diagram

WRG 300 DC - Wiring diagram

Predecessor - successor

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