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VENTS TwinFresh EASY-D RL7-50-17

Single-room heat regeneration unit. Air capacity up to 50 m³/h.

  • Description
  • Characteristics
  • Downloads
  • Dimensions
  • Dimensions
  • Technical data
  • Accessories
Efficient, reliable and energy-saving ventilators 24 hours a day:

Supply clean fresh air to the premises Prevent penetration of excessive humidity and appearance of mould
Remove stale extract air from the premise Reduce the heating costs in winter and air conditioning costs in summer
Low energy demand Protect against outdoor noise
Recover heat and provide humidity balance inside Clean the air of dust and insects
  • The ventilators are designed to ensure continuous mechanical air exchange in flats, cottages, hotels, cafés and other domestic and public premises.
  • The ventilators are equipped with a regenerator that enables supply of fresh filtered air heated by means of extract air heat regeneration.
  • The ventilators are designed for through-the-wall mounting and are rated for continuous operation.
  • Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials, coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust, pathogenic germs).
  • The high-technology ceramic energy heat exchanger is used for extract air heat regeneration and supply air heating.
  • Due to its cellular structure, the unique energy accumulator has larger air contact area and excellent heat conducting and accumulating properties.
  • The ceramic energy accumulator has a special anti-bacterial treatment to prevent bacteria generation inside of the regenerator.
  • The antibacterial treatment is rated for 10 years operation.
  • Two built-in filters with total filter class G3 are used to clean supply and extract air flows.
  • The filters ensure fresh air cleaning of dust and insects and prevent the ventilator parts from soiling.
  • The filters have antibacterial treatment.
  • The filters are cleaned either with a vacuum cleaner or flushed with water with no harm to the antibacterial treatment.
  • Optionally, an F8 filter is available.
  • When installed, it reduces the performance of the ventilator to 40 m3/h.
  • Air is supplied or extracted by a reversible axial fan with a DC motor with safe voltage 12 V.
  • Due to DC technology the fan is distinguished with low energy demand.
  • The motor has overheating protection and ball bearings for longer service life.
  • The ventilator is operated with a wall-mounted control panel or a remote control for your convenience.
  • Ventilation mode. In this mode one ventilator constantly supplies air and the other one extracts it.
  • Regeneration mode. The ventilators operate in opposite phases and in two cycles, 70 seconds each, to provide heat and moisture regeneration.

Energy is recovered due to reversing operation of the ventilator, which consists of two cycles:

  • Warm stale air is extracted from the room, then it passes through the ceramic energy accumulator and while flowing through it, heats and moistens the ceramic accumulator. In 70 seconds after the regenerator gets warmed the ventilator is automatically switched to supply mode.
  • Clean fresh air from outside passes through the ceramic energy accumulator, absorbs moisture and is heated up to the room temperature due to the accumulated heat. In 70 seconds after the regenerator gets cooled down, the fan is switched to air extract mode and the cycle is renewed. The changeover between the supply and extract modes takes place each 70 seconds.
  • To arrange a ventilation system based on TwinFresh ventilators, install one ventilator in each room.
  • For larger premises, install two or more ventilators.
  • It is advisable to use paired units to ensure balanced ventilation.
  • While integrating many ventilators into a single network one part of them must be set into air supply mode and the other part must be set into air extract mode.
  • TwinFresh may be used as an individual unit.
  • In this case the ventilation mode must be selected individually for each room.
  • Air flows from one room to another through door grilles, openings or halls and provides that way required circulation in a premise.
  • An energy regeneration ventilation system based on the TwinFresh ventilators is designed to save operating costs for heating and air conditioning.
  • VENTS iFan WiFi fans are recommended for the most energy-efficient extract ventilation in kitchens and bathrooms.
  • Polluted air is extracted automatically in case of actuation of the motion or humidity sensors.
Mounting into a wall with a standard thickness
using the EH-14 outer grille
Flush mounting using the NP angular
mounting kit
Mounting into a thin wall using the EH-2
outer hood
Parameter TwinFresh EASY-D RL7-50-17
1 speed
TwinFresh EASY-D RL7-50-17
2 speed
TwinFresh EASY-D RL7-50-17
3 speed
Measurement unit
Speed 1 2 3 -
Power 2.37 3.80 7.61 W
Voltage 100-240 100-240 100-240 V
total current consumption 0.033 0.047 0.080 A
Frequency 50/60 50/60 50/60 Hz
Air flow in regeneration mode 15 30 50 m³/h
Air capacity 15 30 50 m³/h
Specific power 0.57 0.46 0.55 W/l/s
Outdoor sound pressure attenuation 41 41 41 dBА
F8 filter filtration rate PM2.5 99 99 99 %
Air flow with F8 filter applied 40 40 40 m³/h
Regeneration efficiency ≤ 92 ≤ 92 ≤ 92 %
Sound pressure level at 1 m 21 27 29 dBА
RPM RPM 915 1555 2330 min-1
Sound pressure level at 3 m 12 18 20 dBА
Filter G3 (F8 optionally) G3 (F8 optionally) G3 (F8 optionally) -
Transported air temperature -15 ... +40 -15 ... +40 -15 ... +40 °С
Type supply and exhaust supply and exhaust supply and exhaust -
Files archieve
Brochure "VENTS TwinFresh EASY-D RL7-50-17" (pdf 7.23Mb)
Download image "VENTS TwinFresh EASY-D RL7-50-17" for your website (png 248.44Kb)
Download high quality image "VENTS TwinFresh EASY-D RL7-50-17" (psd 1.48Mb)
VENTS TwinFresh EASY-D RL7-50-17
Parameter Value Measurement unit

Technical data
Technical data
Specific energy consumption (SEC) [kWh/(m2.a)] Cold climate Moderate climate

Warm climate

-76.2 А+ -37.0 А -15.0 Е
Type of ventilation unit Bidirectional
Type of drive installed Three-speed
Type of heat recovery system Regenerative
Thermal efficiency of heat recovery [%] 76
Maximum flow rate [m3/h] 50
Power [W] 7.6
Sound power level [dBA] 38
Reference flow rate [m3/s] 0.008
Reference pressure difference [Pa] 0
Specific power input (SPI) [W/m3/h] 0.127
Control system type Clock control
Maximum internal leakage rates [%] 2.7
Maximum external leakage rates [%] 0
Mixing rate of bidirectional units [%] 1
Airflow sensitivity at +20 Pa and -20 Pa 0.40
The indoor/outdoor air tightness [m3/h] 0.5
Internet address https://ventilation-system.com/
The annual electricity consumption (AEC) [kWh electricity/a] Cold climate Moderate climate Warm climate
162 162 162
The annual heating saved (AHS) [kWh primary energy/a] Cold climate Moderate climate Warm climate
8024 4101 1855
SF TwinFresh Easy R-50 F8
F8 Filter (complete with a plastic cup)
SF TwinFresh Easy R-50 G3
G3 filter set (2 pcs.)
MVMO 150 bV1s An
Round metal grille
MVM 152 bVsN
Round stainless steel outer hood
MVVM 162 05
Outer hood for mounting from indoor
EH-14 white 160
White plastic outer hood
EH-14 chrome 160
Grey plastic outer hood with a brushed stainless steel cover
EH-14 brown 160
Brown plastic outer hood
 EH-14 black 160
Black plastic outer hood
 EH-14 grey 160
Grey plastic outer hood
EH-14 beige 160
Beige plastic outer hood
EH-14 terracotta 160
Terracotta plastic outer hood
EH-17 white 160
White plastic outer hood
 EH-17 brown 160
Brown plastic outer hood
EH-17 black 160
Black plastic outer hood
EH-17 grey 160
Grey plastic outer hood
EH-17 beige 160
Beige plastic outer hood
EH-17 terracotta 160
Terracotta plastic outer hood
EH-2 grey 160
Grey painted stainless steel outer hood for thin walls
EH-2 chrome 160
Brushed stainless steel outer hood for thin walls
EH-13 chrome 160
Brushed stainless steel outer hood for cold climate
EH-13 white 160
White painted aluminium outer hood for cold climate
NP white 160
Angular mounting kit
NP chrome 160
Angular mounting kit
Duct 160-500
Air duct 500 mm
Duct 160-700
Air duct 700 mm
RK TwinFresh Easy RL-50
Remote control
KV TwinFresh Easy RL-50
LCD control panel
S3 TwinFresh
Cartridge for cold climate
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