Installation of sealed window structures entails a deterioration in the microclimate of the room: humidity rises, a lack of oxygen and air stagnation appear. Problems can be easily solved by placing a supply valve on plastic windows - the device normalizes natural ventilation and stabilizes air exchange.
We will tell you how to choose the right ventilator to ensure the supply of fresh air to rooms with plastic window frames. We have described in detail the proven in practice popular device models. For independent home masters, we provide detailed installation instructions.
Do I need to install a supply valve?
The basis of a normal indoor microclimate is the availability of an effective ventilation system.
The air must constantly circulate - contaminated with excess carbon dioxide is removed through the hood, and clean comes from the outside.
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Prerequisites for installing a supply valve
Leak tightness and ventilation
View of the supply valve on the plastic frame from the street
Appearance of the device from the premises
The specifics of the supply air
Open sash with air intake
Supply valve on a wooden frame
Mounting on a plastic window
When designing Soviet-built houses, special attention was paid to exhaust ducts, and supply air ducts were not equipped. The intake of fresh air occurred naturally - through the cracks in the wooden window frames.
The normal air speed in a residential building or apartment is 0.15 m / s. A significant increase in the indicator provokes a draft, and a decrease will stop air exchange
Metal-plastic analogues are equipped with air chambers in sashes and frames, sealed double-glazed windows and perimeter seals.
Modern designs isolate the room from street noise and retain heat, but paralyze the normal functioning of ventilation. As a result, the microclimate worsens - the air becomes stale, humidity rises, people experience a lack of oxygen, and black mold appears.
Old imperfect constructions effectively coped with the task, providing a sufficient flow of air even in winter. The lack of wooden frames - poor noise and heat insulation
An attempt to restore air circulation by opening a window in the ventilation mode cannot be considered a good solution for the following reasons:
- the advantages of "plastic" are reduced to zero - the effectiveness of the thermal insulation of the room is reduced;
- ventilation works only with the window open, which is especially problematic to organize in the cold season or in windy weather;
- the air flow is uneven and uncontrolled - drafts appear.
Some manufacturers of window systems took into account the consequences of complete tightness and improved metal-plastic constructions.
Violation of air exchange negatively affects the health and livelihoods of people. Condensation appears on the windows, slopes and walls become moldy - the concentration of toxic substances rises
Special ventilation fittings:
- ventilated profiles;
- opening limiters;
- partially breathable seals;
- glazing beads with regulating valve.
To ensure the flow of air through a previously installed window, a supply valve is used.
Due to the ventilation valve, air is exchanged in the room without heat loss. The device protects the room from noise and dust (+)
Principle of operation of the supply valve
In fact, the supply valve is a slit with dampers in the window structure. The ventilator is part of the natural air exchange.
The device works due to the difference between the pressures inside and outside the room. For the effective functioning of the “air inlet”, an exhaust ventilation system is needed.
In the hot season, to ensure circulation of the air flow, you will need to turn on forced ventilation. Hood will accelerate the flow of fresh air
Standard equipment of the ventilation valve for plastic windows:
- Air intake - the outer part of the device mounted on the outside of the frame. The inlet block has an anti-insect grille and a visor that prevents snow and rain.
- Through gap - a telescopic channel through which air flows. The element crashes into the window frame.
- Inside - is installed from the inside of the room. The exhaust block is equipped with a nozzle, a throughput adjustment valve and a filter.
Street air enters the air inlet, moves along the telescopic channel and exits through the nozzles. Further, under the action of convective flow from the heating radiator, the air rushes to the ceiling and warms up.
Heated air is lowered into the living area at a certain distance from the window, maintaining a comfortable indoor temperature
In general, according to building regulations, the installation of plastic windows in houses not equipped with mechanical ventilation should be accompanied by modernization of ventilation. For example, by installing a wall inlet valve, the features of which we recommend that you familiarize yourself with.
Which valve to choose?
To choose the optimal model of ventilator for installation on plastic windows, you need to determine the method of installation and the type of adjustment. The quality of the device largely depends on the company of the manufacturer, and the performance on the technical characteristics of the device.
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Cost as an argument in choosing a supply
Window shape and installation location
Features of installation and complexity of work
Efficiency and adjustment
Types of ventilators by type of construction
Supply valves for PVC windows according to their design features are divided into three main groups:
- folded;
- slotted;
- waybills.
Folded models
Microventilation of the room in this case is carried out by a slot in the frame. The window can be equipped with such a device without dismantling the double-glazed window.
Advantages of folding valves:
- affordable cost;
- preservation of heat and sound insulation qualities of the window;
- simplicity and speed of installation;
- the possibility of automation.
Minus - low throughput (up to 5 cubic meters / h). To increase the flow of air, experts recommend installing two valves on one window.
Folded “air inlets” are often equipped with humidity sensors. Preference should be given to models where the sensor actuator is remote from the ventilation duct - this ensures accurate valve operation
Slit climate devices
Fresh air here enters through a slot with a width of 17-40 cm and a height of 12-16 mm. The valve has an inlet and control unit. Advanced models consist of one universal box.
Advantages of slotted models:
- sufficient throughput (about 20 cubic meters / h);
- protection against external factors;
- the ability to install without removing the glass.
The disadvantage is the difficulty of installing two-block models that require milling of the window block. This minus is deprived of cheaper analogues. Simple “air inlets” allow air to flow through the space between the sash and the frame.
To install the simplest ventilator, it is enough to remove part of the standard seal on the frame and place the valve according to the manufacturer's instructions
Overhead valve models
Such valves are similar in principle to slotted models. The main advantage of the device is high productivity (up to 100 cubic meters / h). “Pritochniki” are placed both in blind and open windows. However, the installation is carried out before the installation of the double-glazed window.
Overhead type devices are usually used in industrial and office premises, installation in a house or apartment is impractical. In addition, such valves allow street noise and degrade the thermal insulation of the window.
Ways to control the window "inlet"
Depending on the device of the valve for plastic windows, the intensity of the supply ventilation can be constant or adjustable. The optimum microclimate parameters can be achieved with the help of a ventilator with the possibility of regulation, which can be automatic or manual.
The operation of an automatic valve is based on one of the principles:
- Stabilization of air supply due to the pressure difference between the room and the street. The owner sets the allowable range of air flow, which is maintained by the device under various atmospheric conditions.
- Air circulation adjustment with polyamide sensor. The valve cross-section increases with excess moisture, and when optimal microclimate is achieved, it decreases.
Minus automatic devices - high cost. In addition, in some models it is not possible to completely block ventilation.
The principle of the physical law is the cornerstone of the operation of the hygro-adjustable drive: with a decrease in humidity, the matter narrows, and with an increase, it lengthens
The air flow in the mechanical device is adjusted by changing the position of the valve or curtain.
Manual setting method allows you to independently choose the time for airing the room. Such a method is more crude - unconsciously, a person alone can allow the occurrence of drafts and overcooling of the room.
Selection of the main characteristics of the valve
When choosing a ventilation valve, special attention should be paid to the following parameters:
No. 1 - Performance Range
The value of the indicator depends on the pressure drop at the outlet and inlet, as well as on the flow area of the “supply air”. When evaluating the models, it should be borne in mind that in the technical characteristics the throughput is always indicated with reference to the pressure difference.
It is not necessary that a device with a capacity of 15 cubic meters. m / h at 10 Pa will allow a greater air flow than the analogue with an indicator of 12 cubic meters / h at 5 Pa.
Valves with a flow rate of 20-35 cubic meters / h at a static pressure of 10 Pa provide normal air exchange in the room
No. 2 - Soundproofing
Most metal-plastic windows have a sound insulation index of 30-35 dB. The supply device must meet such characteristics that after installing the valve, the noise level in the room remains the same.
No. 3 - Temperature Operating
Water vapor escapes through the ventilation device. In winter, this is fraught with complete icing and equipment failure.
In modern systems, the principle of “thermal break” is used - a plastic insert is placed between the metal inner and outer parts.
No. 4 - Possibility of adjustment
For residential premises, it is undesirable to choose devices without the ability to control air exchange. Constantly there is a need to change the intensity or completely block the ventilation duct.
It should be remembered that the window inlet is only an addition to the ventilation system of the apartment. If it does not work, you need to restore the performance of the ducts. We recommend reading about how recovery measures are carried out in our article.
Overview of popular ventilator models
There are quite a lot of models of ventilation valves from different manufacturers on the market. As in every industry, there are leaders: Aereco, Air-Box, Helios, Vents and Siegenia.
Aereco valves of the ENA2 series, as well as Helios products with the letter designation “S”, are characterized by increased sound insulation (+)
Aereco (France) offers various modifications of ventilators. Automatic valves are equipped with a V8 sensor and operate on the principle of hygroregulation. The sensor actuator is located away from the air stream.
Aereco ventilation valves for arranging plastic windows are available in several colors: white, teak, beech and gray. Visors can be purchased separately for better acoustic protection.
Popular models Aereco:
- ENA2 - Available in three variations of various capacities. Production material is plastic, the maximum throughput of the model range is 35 cubic meters. m / h, sound insulation - 37 dB.
- EMM - The main difference from previous products is a mobile outdoor unit.
- EMF - lack of hygro-regulation system. The model is equipped with a manual mode switch.
Air box (Russia) produces plastic “stitches” of manual regulation. The main advantage of the models is the ease of installation, the disadvantage is the lack of automatic control of the humidity level.
There are no outdoor units as standard on Air-Box valves. A narrow plastic case is installed only from the inside of the room on the casement
Series Air box:
- Standart - the valve is mounted without milling. The main purpose of the valve is to prevent condensation on the PVC windows. The volume of incoming air is 4.8 cubic meters per hour with a pressure drop of 10 Pa, sound insulation is 32 dB.
- Comfort - two installation methods are possible. Inserting the ventilator into the frame increases its productivity from 31 to 42 cubic meters per hour. The inlet can be used in any swivel and tilt-swing constructions.
- Comfort s - it is mounted only on profiled holes. A feature of the model is the two-sided direction of air flow, which provides better ventilation of the room. The valve capacity is 40-42 cubic meters / h.
Reenson (Belgium) produces slotted ventilation Aerovent. The valve is equipped with a filter and mosquito net. Manual control with a cord is provided - operation is carried out in two modes: “closed” and “open up”.
The main characteristics of Renson Aerovent: body material - aluminum, air flow - 21 cubic meters / h at 10 Pa, sound insulation - 33-42 dB
Installation example of a perforated ventilator
It is advisable to mount the valve for perforation in the upper part of the window. The complexity of the work lies in the need for frame milling - here you can not do without special equipment and skills with a power tool.
Preparatory work
When planning a valve insert, some points need to be considered:
- installation of the ventilation device is best done on the removed leaf;
- installation is carried out in the warm season;
- when cutting holes, it is necessary to work carefully so as not to damage the seal on the sash.
The shutter is removed from the hinges, installed in an inclined or vertical position.
A part of the hardware trim (scissors and an angular gear) is removed from the frame, reciprocal strips are removed - they can interfere with milling
List of required tools
For the installation of the “inlet” you will need:
- electric drill and drill (diameter - 5 mm and 10 mm);
- fine-grained file;
- jigsaw;
- pattern for marking holes;
- silicone sealant.
It will be possible to prepare a groove without a template, however, it is easier to work with it. You can make a template yourself from plywood or hardboard.
Phased installation and mounting
The whole process of installing the supply valve is divided into several stages:
Stage 1. Markup. To put on a template on a vertical ledge and to mark the place of insert of the device.
Stage 2. Sash milling.Drill a large diameter drill a few holes in a row and connect them using a jigsaw. Repeat surfacing the frame.
The window chambers opened during the milling process must be filled with sealant - this will prevent moisture from entering and the appearance of a whistle during air circulation
Stage 3. Installation of the mounting plate and valve. Treat the back side of the strip with sealant, attach the part to the sash and fix it with self-tapping screws.
Install the indoor unit of the ventilation device to the frame and snap the fasteners onto the bracket. Check that the valve is even and firm.
Stage 4. Installation of a peak. On the outside of the frame, secure the protective visor with screws. Seal the joint between parts. When installing, it is advisable to use insurance.
Stage 5. Installation completion. Fit the furniture harness back into place and hang the sash on the hinges. Set ventilation mode on the ventilation unit.
Valve installation example without milling
Installation of fresh air ventilation without perforation of the sash takes a little time and does not require special skills.
Of the tools you will need:
- stationery knife;
- screwdriver or screwdriver;
- ruler.
The necessary valve components are supplied complete with a “supply air”.
The standard set includes:
- valve;
- one long and two short seals;
- plugs for fixing the device;
- self-tapping screws.
First you need to determine the location of the valve and mark it with a pencil. Optimal - install the device in the center of the sash.
If the sash is too narrow, then the “inlet” should be shifted slightly to the side so that the valve does not block the window fittings
Make cuts at the marked points with a sharp knife and remove the seal from the groove.
To install the valve in an open groove, place fixing dowels - one in the middle and two at the edges. Remove the protective film from the adhesive tape and attach the device in the desired position.
The valve is attached to the profile with self-tapping screws, which are screwed into the installed dowels through the holes of the “inlet”. Instead of the standard gasket, install the small gaskets from the kit.
On the frame, it will also be necessary to replace the seal with a narrower one, so that the valve can let air flow through. Changes made will not affect the sash's performance.
At the end of the installation, it is necessary to adjust the valve by changing the position of the engine. The right position - the largest influx of air, the left - closing the gap
If the installation of the supply device on a plastic window does not lead to the expected results, ventilation in the apartment requires serious modernization. We recommend that you familiarize yourself with the methods of regularly providing the apartment with fresh air.
Video materials will help to better understand the installation technology of different types of ventilation valves.
Video # 1. The installation procedure of the slotted valve without milling the window frame:
Video # 2. Supply valve insert technology:
Ventilation valves do not replace air conditioning systems that refresh and change the temperature of the room. At the same time, “air inlets” are an excellent alternative to open air vents and sashes. The installation scheme of the valve can be done by any home master.
We are interested in your opinion and your stories about the hand-mounted installation of inlets on plastic windows. Please write comments in the block below. Ask questions here, post photos with purchased devices or installation steps.