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Installation of residential and semi-industrial series systems (PRANA 150, PRANA 200G, PRANA 200C)

The system is mounted in the upper part of the wall adjoining the outside. For that purpose a hole of the appropriate diameter should be made, depending on the model:

  • PRANA 150 (residential) – a hole with the diameter of 165 mm, at least.

  • PRANA 200G (residential) – a hole with the diameter of 200, at least.

  • PRANA 200C (semi-industrial) – a hole with the diameter of 220 mm, at least.

The working module is installed in a hole in the wall using building foam or any other similar sealant. Thus, the entire working module is hidden inside the wall, only the ventilation grids are seen: one inside the premise, another on the façade. The through hole should be a slope of 3-5 degrees towards the outside. To ensure normal operation of the ventilation system, the air intake duct (outside) should project beyond the wall boundary for 5 cm at least.

The length of the working module should correspond to the thickness of the wall in which the installation will be carried out.

Why there is only one PRANA recuperator enough for one premise, while the reverse elements should be always installed in pairs?

Prana recuperators, opposite to the reverse ventilators, provide simultaneous intake and extract, while the air flows in the ventilation system are not mixed. This is one of the main features distinguishing Prana ventilation system from the reverse ventilators. After all, reverse ventilators work in turn for the intake and extract. Therefore, for their proper operation one should install two such asynchronous installations.

Let us have a look at some distinctive aspects of reverse installations and the PRANA recuperator operation.

Due to such proportional distribution of intake air flow and extract air flow, it is possible to prevent undesirable and dangerous reverse thrust. Its inoffensive appearance can result in the spread of odours from the kitchen and toilet facilities throughout the apartment or house. However, the real threat to one’s life is presented by the products of combustion, which are not removed via exhaust channels, but are leaking into the living space. Carbon monoxide poisoning is the main threat posed by unbalanced ventilation system.

Particularly for this reason reverse ventilators should be installed in pairs. When one ventilator is working to extract, the second compensates it with intake. Ignoring this recommendation of designers and manufacturers may lead to irreversible consequences. The first reverse inverter units, developed by German engineers, were even sold as a pair only. Where Prana recuperator is designed for operation as single unit operating in the full-fledged manner.

In regard to the efficiency factor we should also consider the fundamental differences. Since PRANA recuperator constantly and simultaneously manages two oppositely directed air flows, it demonstrates consistently high efficiency when operated in the selected performance mode.

While the efficiency factor for reverse installations is specified by the manufacturers at the peak moment of the heat exchanger. With each next second following the peak moment the heat exchanger, and consequently the intake air becomes cooler.

Installation of industrial series (PRANA 250, PRANA 340A, PRANA 340S)

  • tempering intake air heater

  • intake into the premises

  • flexible inset

  • exhaust from the premises

  • filter-box

  • PRANA 340S

  • control unit

  • acoustic absorber

The ventilation modules of the industrial series, designed for free placement inside a premise (PRANA-250 or PRANA-340S), are mounted to the load bearing surface with the help of collars or hangers. The intake and extract air ducts are connected to the ventilation system, depending on the ventilation system design.

If the working module of industrial series (PRANA-340A or PRANA-340S) is designed for installation in the wall, a hole must be drilled through the wall of the corresponding diameter, with the slope of 3-5 degrees outwards on the upper part of an external perimeter wall.

  • PRANA 340A (industrial) – a hole of 350 mm;

  • PRANA 340S (industrial) – a hole of 350 mm.

The working module is installed in the hole with the help of building foam or any other sealant. To ensure normal operation of the ventilation system, the outlet duct (outside) should project beyond the wall boundary at such a distance as to ensure free intake/extract through the ventilation duct placed on the frame of the ventilation system. On your order, the system may be equipped with outlets for intake/extract ventilation channels indoors.

Connection to the electric power system

PRANA ventilation system is connected to the fixed electric power system with voltage of 220V and frequency of 50Hz.The maximum system consumption varies from 32 to 310 W/h, depending on the model.

The device is controlled by remote control unit or by the switch that regulates modes of operation of inbuilt fans in the ventilation system frame (switch on, switch off, adjust).

ATTENTION! The ventilation system is connected to the electric power system only by a professional electrician, in accordance with working norms and documents.

For connection of the ventilation system (residential and industrial lines) it is necessary to:

  • Connect the contact terminals 1 and 2 (pic.) to the power system using a two-wire power cable with a cross-section of at least 0.75 mm2. If the package includes a rheostat switch, it is connected to the power system subsequently.

  • Power up the ventilators.

  • Complete visual test inspection for ventilation system operation.



Mode description

Remote control (unit)

Rheostat switcher


Ventilators are switched off

A recuperator provides air exchange at the expense of the pressure outside and inside the premises.

Micro ventilation:

PRANA (residential): 7-8m3/h; 3-5 m3/h

PRANA (semi-industrial): 9-15 m3/h

PRANA (industrial) 15-20 m3/h


Both ventilators are switched on

A recuperator provides maximum intensive air exchange in the premises at the expense of two ventilators in the maximum mode.

Air exchange:

PRANA (residential): intake 125m3/h; extract 105 m3/h

PRANA (semi-industrial): intake 235  m3/h, extract 220 m3/h

PRANA (industrial) intake 1100 m3/h, extract 1020 m3/h


Both ventilators are switched on

A recuperator provides formal air exchange in the premises at the expense of two ventilators with reduced power. Noiseless mode (mode with minimum noise up to 26dB)

Air exchange:

PRANA (residential): intake 25m3/h; extract 21 m3/h

PRANA (semi-industrial): intake 70m3/h, extract 65 m3/h

Safety requirements:

  • Protection against electric shock is determined by the type of protection that applies to devices in according to GOST 3135.0-95.

  • UHL 4.2 ventilation system according to GOST 15150-69.

  • The degree of protection against interference into dangerous parts and penetration of water: IP24.

ATTENTION: All installations and electrical connection works (services) are carried out only after disconnecting the product from the electrical power network.

ATTENTION: Ventilation system operation is prohibited if there is danger of foreign objects interference into the flow channel of the frame as they could block or damage the fan blades of the working unit of any ventilator.

ATTENTION: The ventilation systems must not be used in the premises where the air contains aggressive substances or the temperature does not meet the parameters indicated.