Aeronom room air system


No longer available for delivery
Article number: 0082.0037
Manufacturer: MAICO
Centralised and decentralised ventilation units with heat recovery, central exhaust air units, ventilation... more information
Application examples: Passive energy house

Characteristic curve

WRG300 - Characteristic curve

  • WRG300 IM0009191.PNG Centralised and decentralised ventilation units with heat recovery, central exhaust air units, ventilation duct systems

Dimensioned drawing

WRG300 - Dimensioned drawing [mm]

  • WRG300 IM0009113.PNG Centralised and decentralised ventilation units with heat recovery, central exhaust air units, ventilation duct systems

Technical data

WRG300 - Technical data

Article WRG300
Rotating speed 2.070 1/min
Type of voltage Alternating current
Rated voltage 230 V
Frequency 60 Hz
Power consumption 30 W / 50 W / 95 W
Imax 6,9 A
Degree of protection IP 00
Electrical plug-type connection Earthing contact
Installation site Cellar / Storage tank / Jamb wall / Utility room / Heating room
Housing material Sheet steel, galvanised
Colour Pure white, similar to RAL 9010
Weight 80 kg
Filter class G3 / F7
Connection diameter 160 mm
Degree of heat provision 92 %
Heat exchanger construction type Condensation rotor
Packing unit 1 piece
Article number 0082.0037


63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


LWA2, high (dB(A))










LWA5, high (dB(A))










LWA6, high (dB(A))










LWA2= housing sound power level in dB.

LWA5= free inlet sound power level in dB.

LWA6= free outlet sound power level in dB.


WRG300 - Accessories

Specific accessories

Product typeNameArt. No.Price*(EUR)Action
Tubular sound absorberRSR 160092.0314 on request
  • On the notes
Tubular sound absorberRSR 16/500092.0324 on request
  • On the notes
Electrical air heaterERH 16-20082.0102 on request
  • On the notes
Water air heaterWRH 16-20082.0118 on request
  • On the notes
Air filter, replacementZF 3000093.0696 on request
  • On the notes
Wall bracketWSK 250No longer available for delivery0018.0223 on request
  • On the notes
Air filterTFE 16No longer available for delivery0149.0042 on request
  • On the notes
HygrostatHY 5No longer available for delivery0157.0123 on request
  • On the notes
HygrostatHY 5 INo longer available for delivery0157.0125 on request
  • On the notes

Product description



short description

Centralised and decentralised ventilation units with heat recovery, central exhaust air units, ventilation duct systems

Product description


  • 92 % degree of heat provision.
  • Automatic volumetric flow regulation for constant air volume.
  • Special energy savings due to the DC motor.
  • Galvanised plate housing, RAL 9010 plastic powder coated surface, sandwich construction, with integrated heat insulation.
  • Integrated filter system with coarse filter (G3) and dust filter (F7) fitted in the outside air, coarse filter (G3) fitted in the exhaust air. The fabric replacement filter can be exchanged without tools.
  • Electronic filter monitoring with filter change warning displayed on the control unit.
  • 4 DN 160 duct connections with rubber lip seals on top of the unit. For directly connecting up tubular sound absorbers.
  • Controlled by the control unit in the living room.
  • Control unit for switching ventilation levels, timer, filter pollution.

Heat exchanger

  • Counterflow heat exchanger made of synthetic material (PS).
  • The heat exchanger can be easily removed and cleaned with water.

Frost protection

  • 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 guarantees extra heating power and in the summer, extra cooling power.

Heat recovery fan

  • 2 centrifugal DC fans with integrated converter, one fan each for supply air and exhaust air.
  • 3 ventilation steps: 1 = economy setting, 2 = normal, 3 = high.

Mounting instructions

  • Mounting on the wall or a pedestal is required to endure access to the condensation connection.
  • For installation or wall fitting using a bracket: In cellars, attics and engineering rooms.
  • The front plate can be unscrewed.

Condensation drain

  • The condensation is drained from the bottom of the unit using a hose (DN 1/2") connected to a siphon.

Table of contents

Wiring diagram

WRG300 - Wiring diagram

WRG 300

S1 On / Off

S2 WRG in level 2

S3 WRG in level 3

V1 distributor (to be provided by the customer)

M1 exhaust air fan

M2 supply air fan

F1 frost protection

WRG 300 with ERH 16-2 and ETL 16 P

S1 system on

US 16/K1 heating release

S2 WRG300 in level 2

S3 WRG300 in level 3

V1 distributor / to be provided by the customer

WRG 300 heat recovery unit (1 = step 1 (economy), 2 = step 2 (middle), 3 = step 3 (high)

M1 exhaust air fan

M2 supply air fan

LW 9 air flow monitor (in position N)

ETL 16 P electr. temperature controller

FL 30 P channel sensor

FR 30 P room sensor with setpoint generator

S4 night reduction

ERH 16-2 electric air heater

F1 temperature limiter

F2 safety temperature limiter

S5 sensor

WRG 300 with RLS 1, WP 300 and ERH 16-2

TH 10 thermostat: Anti-frost protection fuse

R1 outside air sensor (supply temperature). Installation: outside air duct, close to the outside wall / north side

WRG 300 K Heat recovery unit

M1 exhaust air fan

M2 supply air fan

F1 anti-frost protection fuse. In the WRG 300 system, this must be supplied by the customer, bridged to terminals M2 and M4. See WRG 300 K wiring diagram

WP 300 K heat pump

P1 pressostat (high pressure fuse)

T1 anti-frost protection fuse (vaporiser)

Y1 cooling / heating change over valve

M1 compressor

BU1 safety plug (supplied by the customer)

* Terminals M2 and M4 must be bridged by the customer

Predecessor - successor

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