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The ventilator with a round duct is specially designed for easy mounting in refurbished and reconstructed ready-built buildings. - details see: https://www.machineto.com/single-room-ventilation-systems-with-heat-recovery-twinfresh-r-10213469

The single-room ventilatorTwinFresh Ris an easy and effective solution for arranging of decentralized energy saving ventilation in separate rooms, cottages, public and commercial premises.

Features:

• Efficient supply and exhaust single room ventilation
• High-tech ceramic energy accumulator with regenerating efficiency up to 91%
• Reverse EC ventilator with low energy demand up to 3 W and safe voltage 12 V
• Integrated automation with four operating patterns
• Silent operation (22-29 dBA)
• Easy installation due to a round telescopic duct adjustable from 250 to 470 mm
• Air purification with two built-in G3 filters
• Rated for continuous operation always connted to power mains

Front grille

Modern design of the front grille makes it match well with any interior. The grille is fitted with a thermal actuator and automatic louvre shutters that are opened during operation of the ventilator and are closed during standby. The front grille is made of high quality snow-white ABS plastic.

Air filtration

Two G3 built-in filters provide supply and extract air filtration and ensure supply of fresh air free of dust, pollen, insects and protect the ventilator internals from soiling.

Air supply and extract

Reverse axial EC fan is used for air supply and exhaust. Due to EC technology the fan has low energy demand up to 3 W. The fan is powered by safe voltage 12 V. The motor has integrated overheating protection and ball bearings for longer service life.

Telescopic duct

The round telescopic duct is made of high-quality PVC plastic and has adjustable length from 250 to 470 mm.

Operating logic of the ventilator TwinFresh R

The ventilator is designed both for reverse mode with heat and moisture regeneration and for supply or extract mode with no regeneration.

CYCLE I.Warm stale air is extracted from the room, then it passes through the ceramic energy accumulator, heats and moistens the ceramic accumulator and transfers up to 91% of thermal energy to it. As the ceramic accumulator gets heated, the ventilator switches to supply mode automatically.

CYCLE II.Clean fresh air from outside passes through the ceramic energy accumulator, absorbs moisture and is heated up to room temperature due to accumulated heat. As temperature of the accumulator drops down, the fan switches to extract mode and the cycle is renewed.The ventilator changes its operation mode for supply or extract ventilation every 70 seconds. This time interval can be adjusted during installation from 30 to 120 seconds.

Ceramic energy accumulator (regenerator)

The ventilator includes a high-tech ceramic energy accumulator with regenerating efficiency up to 91%.

The unique regenerating accumulator is featured with a cellular structure and a large air contact area. It is made of ceramics with high heat conducting and accumulating properties.

No equally sized plate or tube recuperator is compatible with a ceramic accumulator in terms of efficiency. As the air flow passes through the ceramic accumulator, either in extract or supply mode, it fills the entire cross section of the accumulator whereas only one half of the entire cross section is used in plate or tube heat exchangers. Created in such a way low air resistance enabled use of EC motors with extremely low energy demand.

Outer hood

It is made of aluminium and has special polymer coating. On lower side it has a protecting grille for prevention of direct water ingress and penetration of foreign objects inside the ventilator.

Control and operating modes

The automation system has four operating patterns:

1. Ventilation mode (extract or supply mode) at low speed with air capacity 25 m³/h;
2. Ventilation mode (extract or supply mode) at high speed with air capacity 50 m³/h;
3. Reverse mode (regeneration) at low speed with air capacity 25 m³/h;
4. Reverse mode (regeneration) at high speed with air capacity 50 m³/h.

Selection and control of the required operation mode is done with a control
panel that is included into delivery set of the modelTwinFresh RA.

Delivery of the control panel for the modelTwinFresh Ris available upon separate order.

Ventilation system arrangement example

The picture shows the example of ventilation system arrangement in a flat based on four ventilatorsTwinFresh R. Each room that requires mechanical ventilation is fitted with one ventilator. Large rooms may require two ventilators. It is recommended to install the ventilators in pairs. Fresh air is supplied to the room by two ventilators and the other two ventilators provide extraction of stale humid-laden air. Air flows between the rooms through door openings and halls and ensures full ventilation in the flat. The control block switches operation modes of all the ventilators once in 70 seconds. Ventilation system based onTwinFresh Rventilators provides non-stop air exchange in the premise, saves thermal energy in the flat in winter and retains it in the room in summer. The ventilators can be switched to ventilating mode in summer with no energy regeneration for cooling the room during the night.