How to properly install the hood above the gas stove. At what height to hang the hood: installing a fume hood, tips and tricks How to mount the hood over a gas stove

The hood is one of the most important elements of kitchen appliances. The comfort of being in the kitchen, the safety of the wall covering, ceilings and furniture, the aesthetic appearance of the kitchen depend on its choice and placement - a modern hood has long been an important element of decor.

The exhaust system is especially relevant in a kitchen with gas stoves - unlike other types of hobs, gas heats up the air to a great height, emits harmful decomposition products during its combustion, and burns out oxygen.

For intensive cooking, air purification is essential in the room.

When deciding how to install a hood above a gas stove, you should be especially careful about the type of exhaust system, not every design provides optimal operation in rooms with gas.

Primary requirements

Functionality

The through-flow hood will remove the polluted air, the circular hood will clean the polluted air with filters and return it to the room

All hoods are divided into two large groups: circular and flow-through, in the former, air is passed through filters and returned back. At the same time, high humidity will remain in the room, many harmful decomposition products during gas combustion, air with a low oxygen content - the norms for the content of harmful substances may be exceeded.

When using flow-through types, polluted air is removed outside the kitchen area and replaced with fresh air - this type of exhaust system for gas hobs is preferable.

Aesthetics

The exhaust system must fit perfectly into the interior without disturbing the appearance of the kitchen. To do this, the hoods are built into furniture (cabinets above the stove), the color of the work surface, the case, or the design corresponding to the style of the kitchen is selected.

Many people forget about this, installing especially popular lately modern inclined high-tech models of glass and metal, with black glossy surfaces, in any kitchens that often resemble classic or Provence style with light wood-like furniture.

Efficiency

The exhaust system in the kitchen should eliminate as much as possible all the negative consequences when cooking food: foreign odors, water vapor with the smallest droplets of fat, particles of soot and soot in the air, high humidity. The gas cooker hood must be correctly installed above the hob and have the appropriate power and performance.

Classification

According to their design, all existing hoods can be divided into several groups.

Flat

Flat options have a minimalist design and will not stand out from the rest of the kitchen

A very common form, a flat worktop is parallel to the hob. They take up little space, mainly the design is used in circular forms.

Dome

These models capture more air during cooking

One of the most common designs, in appearance, resembles a dome, lowered over the hob along a square pipe at the top. In almost all designs, this pipe is part of the air duct, and dome hoods are built into a flow-through exhaust system - such designs are very rarely used in circular designs.

Retractable

Retractable models are practical, but have a short length, so they capture less air when working

To increase the service area, the working surface of the hoods is often increased by a pull-out module. Usually, such models are built into the lower part of a wall-mounted kitchen cabinet, in which an air duct can be hidden, or in the case of circular ones - there is space for placing kitchen accessories. Retractable - a very convenient design when installing an exhaust system in small kitchens.

Corner

Corner models are not so widely used, so the choice of design and functionality may differ from standard options

Placed in the corner of the kitchen, they are designed for a gas stove, deployed at an angle of 45 degrees to the main wall. The working surface of the hood has the shape of a square with a truncated corner.

Island

Island options become exclusively in the islands in the kitchen

Designed for placement in large kitchens if the hob is located in the center of the room. Typically, the hood is lowered over the hob on a square duct.

Inclined

Inclined models have a stylish look and standard functionality

A modern solution for kitchen exhaust systems, in which the worktop is positioned at an angle to the hob. This allows a tilted model, with the same area as a flat horizontal one, to take up less free space in the kitchen. The design looks most aesthetically pleasing in modern high-tech kitchens.

Tabletop

More recently, a new kind of hoods has appeared, saves space for wall cabinets or shelves

The device is mounted on the table next to the hob. During operation, its suction working panel extends vertically upward and air is pumped out.

Hoods are classified according to the installation method as follows:

Suspended. It is fixed directly above the slab using cables or on the duct.
Embedded. Installed in kitchen furniture from the bottom of hanging cabinets.
Wall mounted. Attached to the wall above the hob.

Installation height

Installation height depends on the average height of the person in the family

The main parameter during installation is the distance between the hood and the gas stove, it should not be less than 750 mm. and no more than 900 mm.

This distance is selected taking into account the ergonomic indicators of the hostess, depends on the power of the hood - more powerful structures can be placed higher. Also, the installation height of the hood above the gas stove in many cases directly depends on the manufacturer's recommendations, which must be followed in the first place (these requirements are described in the instructions for the device).

The size

The second main parameter, the width should not be greater than the width of the hob. If structurally it rises to a height greater than the recommended one, its overall dimensions or suction power must be increased.

When deciding how to correctly install the hood over the gas stove in the case of using an inclined model, they usually focus on the lower edge of the air intake - the minimum distance to the stove should be 550 mm.

Another important parameter of the hood is its depth, usually this parameter corresponds to the dimensions of the hob and is typical for its width.

Installation of exhaust systems

Installation may vary depending on the type of systems

It is quite easy to install a kitchen hood with your own hands if you follow the instructions and work order. Often the manufacturer produces kitchen hoods that combine two modes of operation - circular and flow.

Circular hood installation

Using circular mode in kitchens with a gas hob is not a very good solution. An autonomous circular hood above the gas stove will not be able to provide the necessary comfort in the kitchen; its carbon filters, unlike electric stoves, will be more quickly clogged with gas combustion products, which will lead to additional economic costs.

The installation of a circular cooker hood usually does not cause big problems: it can be attached directly to a straight wall or in a corner, built into furniture, lowered over the hob along a pipe or on cables. The sequence of work when installing it on the wall is as follows:

The place of connection is preliminarily determined, if the socket near does not fit too well or it is located far, the point is transferred. In this case, it may be necessary to chisel the walls and install a new outlet with wiring for connection.
Attachment points are marked in the wall at the desired height, which specify the location of the hood, holes are drilled with a perforator and dowels are driven in. It is important to control the correctness of installation using a building level - the working surface of the hood should be located strictly horizontally above the stove.
The hood is screwed to the wall with screws through the mounting holes, if the gas pipe interferes, it is removed from the wall and is attached to long studs with nuts. Also, between the wall and the hood, you can put a bar of the appropriate thickness and attach the hood to it or to the wall on dowels with long screws through the bar.

Installation of a flow hood

When deciding how to hang the hood over the stove, you should know that the flow-through one will require the installation of a duct system to connect it to the ventilation hole of the general house shaft, or an external air outlet in the wall, window or ceiling.

Installation of air ducts with the installation of a hood is easy to do with your own hands, if you follow a certain order of work.

Required tools and materials

Selection of air ducts. For the installation of flow systems in everyday life, two types of air ducts are most often used: corrugated aluminum or plastic of square or round cross section.

Example of an aluminum corrugated pipe

There is a place for a ventilation device in any modern kitchen. The distance from the stove to the hood determines the effective operation of this structure.

Types of hoods and their purpose

The hood protects the kitchen space and furniture from contamination with the smallest particles of fat and impregnation with a mixture of various odors. No one will be pleased to feel an unpleasant odor from curtains or upholstered chairs, which can also penetrate other living rooms.

All devices, according to the principle of operation, are divided into:

circulating (with built-in filter);
hoods with air duct (connected to the ventilation system).

In recirculating models, the air is cleaned with a charcoal filter and returned to the kitchen. Such hoods are effective only in small rooms where it is not possible to install an air duct, and the distance between the stove and the hood should be small.

The second type is characterized by better quality work, since air is completely removed from the room. Installed in large rooms.

Types of exhaust devices:

Where should the hood be located?

When buying a hood, along with it, the kit always comes with instructions for use, which indicates where and at what distance from the stove the device should be located. The exhaust structure can be built into the wall cabinet, or it can be located under it, the main thing is that its size coincides with the dimensions of the hob, and it hangs exactly above the stove. Also, even before purchasing the hood, you need to consult with specialists about its power. For example, a small appliance is not suitable for a large kitchen space, and in a small kitchen there is no need to install a very powerful unit.

How to determine the optimal distance from the hob to the extractor hood?

The distance from the hob to the hood is determined by the established standard. If there is an electric stove in the kitchen, then the exhaust hatch should be at least 65-75 cm from it, and if the hood is above the gas stove, the distance between them is 75-85 cm.In the case when the device has an inclined surface, the installation parameters change slightly :

the distance from the gas stove to the hood is reduced to 55-65 cm;
the height above the electric hob is reduced to 35-45 cm.

You also need to take into account the height of the person who will be most of all at the stove, and the general interior of the kitchen.

Why is it necessary to comply with the standards for installing an exhaust hatch?

These are the optimal parameters for installing the hood, contributing to its efficient operation. It is not recommended to decrease or increase them. If the device is located high, its capacity for absorbing air may not be enough, then odors along with fat droplets will quickly spread everywhere. A low hood setting can interfere with the cooking process. So not only will it be inconvenient to approach the gas / electric stove and put high pots, but there is a risk of heating the structure, igniting it and breaking the paintwork.

Thus, the question of what distance from the stove to the hood should be can be answered unequivocally: 75-85 cm in the case of a gas stove, and 65-75 cm above the electric stove.

Factors affecting the location of the exhaust structure

When purchasing and subsequent installation of the hood, the following factors should be considered:

Type of hob. Do you need to calculate the distance between the hood and the gas stove or electric stove?
The declared power of the device.
Kitchen design / interior.
Compliance with the norms for the installation of the ventilation hatch specified in the data sheet.

Compliance with these conditions for the installation and operation of ventilation equipment will allow you to use the device as efficiently as possible and protect the kitchen from unpleasant odors and grease.

Installation rules for ventilation equipment

Optimum performance of the appliance depends on the following factors and installation rules:

the device must comply. Then all the hot contaminated air flow will be completely sucked in by the hood and taken out into the street, or cleaned through a filter and fed back to the kitchen. The standard dimensions of the device are from 60 to 90 cm.
Properly installed hood above the stove. The distance from the appliance to the stove must not contradict fire safety standards and depends on the type of stove. The required distance from the stove to the hood is always indicated in the data sheet of the device.
Connecting the device to the network.
Installation of exhaust pipes, if required by the design of the exhaust hood.

It is better to entrust the installation of ventilation equipment to professionals. But for those who are confident in their abilities, it will not be difficult to hang the device with their own hands.

Installing a circulating hood is not difficult. First you need to measure its height and mark with control points. Then you should drill holes in the wall for the fasteners. Further, the device is mounted to the wall or to wall cabinets using self-tapping screws and special hooks included in the kit.

Hoods of another type of air purification are installed in the same way as circulating ones. Only here it is already necessary to connect the air pipe to the umbrella body. The pipe can be plastic or foil.

At the end of the installation of the equipment, it is necessary to carry out a control check of its operation (mainly for the second type of models). If the hood does not function or is too noisy, it is worth checking again all the joints of the device with the ventilation pipes, their integrity.

Air duct arrangement

The air duct should not have a lot of bends, as this will significantly complicate the discharge of polluted air. It is desirable that the pipes are short, straight and contain few elbows. Changing the direction of the duct is carried out in a place with a large bend radius. The diameter of the outlet pipe must correspond to the opening in the hood structure. It is not recommended to deliberately narrow the holes and mount additional connecting elements between them. This impedes the free flow of air, thus creating a large load on the working motor of the hood. Excessive noise may be generated.

Most often, these structures are made of thick foil, and then masked with PVC boxes / drywall so as not to disturb the interior of the room.

Where should the hood be located?

An electrical outlet for connecting an exhaust hatch is usually installed at a height of 2-2.5 m above floor level. Thus, it should be located 10-20 cm above the wall cabinets.It is also displaced to the left or right of the duct by 15-20 cm.

Conclusion

In the article above, the types of ventilation devices were considered, at what distance from the stove to hang the hood, methods of air purification.

With proper installation of the exhaust device, the device will provide clean air in the room and cleanliness of the surrounding interior. When choosing and buying an umbrella, it is necessary to take into account the correspondence of its power to the cubic capacity of the kitchen, its appearance, as well as the methods of air purification: full exhaust through the air duct or circulation of the purified streams.

The main points for installing a specific model of the device and the distance from the stove to the hood are described in the instructions. Generally accepted standards for determining the installation height of the device: from 75 to 85 cm for gas stoves; from 65 to 75 cm for installation above electric stoves.

No modern kitchen is complete without a hood. They are relevant in separate kitchens, but are especially important when the apartment is a studio, where the kitchen space is combined with the living room and all the smells immediately spread throughout the room. The article will talk about how to choose the right one and how to assemble the hood in the kitchen with your own hands.

The installation method of the hood directly depends on its model. Therefore, first you need to consider what types of hoods are.

Types of kitchen hoods

A cooker hood is a device that filters the air over a stove or hob. They are classified according to several parameters.

Difference in the way of air purification

Hoods with a flow-through cleaning system... They do an excellent job of cleaning the air from oily fumes and soot. They are connected directly to the ventilation shaft. For maximum efficiency, the hood should be the same size or larger than the hob. In order for the flow system to cope, powerful and rather noisy motors are installed on it.

Recirculating hoods... They have charcoal filters. Passing through them, the air is cleaned and gets back into the room. Filter cartridges need to be replaced frequently and cannot be washed. Most often, flat models of hoods are equipped with such a system.

Advice: there is a filter in any type of hood. But somewhere it consists of several metal grates assembled that can be washed, and somewhere it is a disposable charcoal one. If in recirculation models its function is clear, then in flowing hoods it protects the ventilation shaft from large fat particles.

Important. Modern models of hoods are equipped with a special ARS system. As soon as something burns on the stove, it automatically turns on. In addition, it has a motion sensor, if you approach it, the backlight lights up brighter.

Difference in mounting method

Dome or fireplace... These are high-power devices. They are often supplemented with great functionality. They are attached to the wall above the slab, taking up all the space above them. Do not need to change filters.
Embedded. These compact models are almost invisible on the kitchen set, as they are built into a special niche. They require a direct connection to the ventilation, which allows them to perfectly cope with grease and unpleasant odors. The grilles are metal and require regular cleaning. Dishwasher safe.

Island. They require a lot of space, as they are attached to the ceiling above the slab. They are equipped with a powerful motor that can cope with the cleaning task as quickly as possible. This is due to the fact that they are often installed in the middle of the kitchen, above the working island. Hoods from this category have beautiful designs and high prices.
Flat. They are mounted when there is no access to the ventilation shaft. This self-contained device is mains powered. It has a medium-power fan that blows dirty air through replaceable cartridges. The cost of the hoods themselves is low, in contrast to the filters, which will have to be purchased periodically.
Corner. Relevant if the stove is located in the corner of the kitchen unit. Due to the popularity of the form, it is produced with a flow-through and recirculation system.

Important . When choosing a model, you need to pay attention to its height. When installed, it should be located above the gas surface at a distance of 75-80 cm, and above the electric surface - from 65 to 80 cm.

Which hood to choose

The hood is chosen at the design stage of the kitchen set. You need to know in advance its exact dimensions and mounting method. In addition to these parameters, it is worth considering the noise level (especially important for studio apartments), the control method and operating modes.

Tip: the hood power should be calculated based on the overall dimensions of the kitchen area.

Power

As a rule, household hoods all have almost the same power. But there are interior models that, having a beautiful design, are low-powered and will need to work for a very long time to clean the air.

If a cleaning system is chosen for catering, then the power rating is very important. The higher it is, the better.
To accurately calculate the power, it is worth resorting to the formula, which consists of the ratio of the cubic volume of the kitchen and the performance of the hood. For example, the length of the kitchen is 6 m, the width is 3 m, the height of the ceiling is 3 m. The cubic volume is 54 m³. The resulting value is multiplied by 10 and get 540 m³ / h. It is in this form that the power is indicated by the manufacturer in the characteristics. The resulting value is the lowest acceptable when choosing a hood, otherwise the model will not cope with air purification.

Operating modes

Almost all modern hoods have several operating modes. In some cases, it is a push-button switch that can select one of two modes. But more often - several buttons (4 or more). More expensive hoods have touch control.

Noise level

The noise level is influenced by the air capacity (a parameter that is calculated with the volume of the kitchen) and the fan power. The higher they are, the higher the noise will be.
But, as a rule, inexpensive options are more noisy due to the lower quality of the materials used. Therefore, it is worth checking its work even when buying in a store.

At what height should the hood be installed correctly

On average, its lower edge should be 65-90 cm higher than the slab. The lower, the more efficient its work. But if you fix the hood below 65 cm, its individual elements may deteriorate due to high temperature, too strong steam or grease splashes. And it will be inconvenient to cook. You can set it above 90 cm only if the owner is tall and the power of the device is sufficient.

Advice: if the stove is electric, then the installation height of the hood is 65-70 cm, and if it is gas, then 75-90 cm.

Do-it-yourself dome hood installation

Dome hoods have a flow-through filtration system and require a direct connection to the ventilation shaft. For the fan to work, there must be an outlet near it.
Before assembling the hood, the kitchen unit must already be installed. Considering the height and width of the product, markings are made for it.
The hood must be firmly attached to the wall. Therefore, under the fasteners for the hood in the kitchen, holes are first drilled (if the wall is wooden) or hollowed out with a perforator (if it is concrete or brick). Dowels are inserted into them and fasteners for the hood (which are included in the kit) are screwed to them with the help of bolts.

When the frame is fixed on the wall, the stage of connecting the hood comes with your own hands. To do this, a corrugation is put on the upper part of the dome up to the air duct and hermetically fixed with a clamp. The other end is brought to the ventilation grill and fixed. To make it hermetically sealed, they sell plastic contours.
Using a lighted match, they check the hood's performance and if everything is fine, the corrugation is closed with a decorative overlay, which is provided with the hood.

How to install a built-in hood with your own hands

Unlike a dome hood, a built-in hood is almost invisible on a kitchen set. It is installed either in a wall box or in a pull-out panel. Let's consider an easier way to install in a locker.

The wall cabinet into which the hood is built is ordered strictly according to its dimensions. These characteristics should be included in the instructions for the hood.

Tip: if the kitchen is already ready, then you will have to make adjustments to the size. And if the cabinet itself can be reduced on its own, then its facade will have to be ordered again.

Since the hood is built-in, its bottom edge should be at the level of the cabinet. Therefore, the bottom is raised to the height of the device and screwed to it. The weight of the structure is quite large, it is necessary to assemble the cabinet especially carefully. It is recommended to fix the bottom with Euro screws.

The cabinet will mask the duct. A hole for the corrugated pipe is cut in it with a jigsaw. If the ventilation shaft is located in the wall behind the cabinet (this is often done in country houses especially for hoods), then the back wall is also cut out. If like in an apartment near the ceiling, then the top one.
The cabinet is placed on the floor, on its side and the hood body is screwed to it, on self-tapping screws. Then everything is put into place and firmly fixed. Due to the high weight of the hood, it is not enough to bolt it to the wall. For reinforcement, a metal profile for wall cabinets is first screwed to the wall, and the assembled structure is already hung on it.
Further, a corrugated pipe is fixed to the hood and ventilation. The hood is connected to an outlet and tested for performance. It remains to attach the front of the cabinet, and the work is over.

How to install a flat recirculating hood

It is a suspended structure that hangs over the hob. Since the cleaning system in it is recirculating, therefore, it does not have an air duct and its shape is flat.

There are holes on the hood for fixing it on the wall. Under them, holes are made in the wall with a perforator and dowel-nails are inserted.
Sheds are attached to them (if they are included) and the hood is fixed to them.
It remains only to connect it to the network and the hood is ready for operation.

The principle of installing the hood is simple, but there are nuances on which the quality of its operation and ease of use will depend.

How to properly connect the air duct to the hood

Only when building a house on your own can you design a ventilation hole in the kitchen for the hood in such a way that it will be located next to it, and only a small adapter is needed to connect. In all other cases, either a flexible corrugated pipe or a plastic rigid pipe for the duct is used.
If the choice fell on a plastic smooth pipe, then fittings in the form of rotary corners are needed. You will also need at least 2 adapters that connect the air duct to the exhaust and ventilation.

All joints fit tightly to each other, but in order to achieve complete tightness, they are planted on a sealant.
The main advantage of such a pipe is its beautiful appearance, which does not need additional decoration with screens and boxes.
It is much easier to work with a plastic corrugated tube, but due to its low aesthetics, it is desirable to mask it.
If you have to bend pipes or corners for laying to ventilation, then the corrugated pipe is simply irreplaceable. It easily bypasses all obstacles without additional connectors.
Corrugation is sold in different diameters, you need to choose according to the size of the hole on the hood.

One end of the corrugation is attached to the hood and tightened with a clamp. The fixation is strong and additional insulation is not required. It is attached to the ventilation with a lattice.

Advice: if there is a suspicion of a deterioration in the performance of the hood, the corrugation must be replaced. During operation, fat and fumes accumulate in it, which impede effective work.

How to properly connect the air duct to ventilation

There is ventilation in every apartment, it is located in the kitchen and bathroom and is a grate and an opening behind it, which goes into the ventilation system of the shafts of the house.
To attach a hood to it, a special shield is bought in a household goods store. It is the same size as the ventilation grill.
The grille is removed and a shield is fixed in its place, which is made of molded plastic with a round hole for the air duct pipe.

Unfortunately, direct connection, although simple, has an important disadvantage. When designing old houses, ventilation was not provided for the use of ventilation hoods in every apartment. Therefore, through the common channel, the smell through the hood can be drawn into neighboring apartments. In addition, the pressure of the air flow in the mine will change, and only the most powerful hoods will be able to draw air into it.

To avoid this, you can invite a specialist ventilator, who, after an on-site inspection, will give recommendations on the choice of the hood model, its capacity. Perhaps, and will carry out the necessary cleaning of ventilation.
You can also make ventilation yourself by connecting the air duct directly to the street through the window.
The last option is to install a recirculation hood, which does not require an air duct.

Advice: in modern houses, individual ventilation ducts are provided and such problems will not arise.

DIY kitchen hood installation video

Where is the best location for the outlet for the hood?

Very often, hoods have a wire that is too short to reach a regular outlet. And most homes don't have a dedicated outlet for it. Therefore, you either have to do the wiring and cut the walls, or use an extension cord.
If repairs are being made in the kitchen, then it is advisable to make a separate outlet for the hood.
It should not be located in the immediate vicinity of the stove and sink. It is best done at the top, to the right or left of the hood.
To protect against power surges and motor burnout, the outlet is grounded.

Assembling and installing the hood is a fairly simple process that you can handle yourself. But it is important to follow the instructions that are given for a particular model. And then the kitchen, and the whole apartment, will be under reliable protection from burning and strong odors.

It is difficult to imagine a modern kitchen without such a household appliance as a range hood. Its main purpose is to remove contaminated air masses and unpleasant odors outside the exploited space. Today, no one counts on ventilation in the form of ducts, because over time, the ducts become dirty and narrow, as a result of which their efficiency greatly decreases. Therefore, a cooker hood installed above a gas stove is the ideal solution for removing contaminants coming from the stove.

The classification of exhaust devices is based on the principles of operation and installation methods. There are two positions that differ from each other in the principle of operation of the device. Accordingly, their technical component is also different.

Flow hoods. A simple model in which a fan is installed. Their main task is to remove polluted air outside or into the ventilation system of the house.
Recirculation hoods. Filters are installed in their design, through which polluted air is driven by a fan. It is cleaned and returned back to the premises. In this case, no outdoor connections or ventilation ducts are required. Therefore, the installation of such a hood above the stove is the easiest.

Varieties of hoods in the kitchen

Recirculation hoods, in turn, are represented by a wide range of models:

Wall-mounted - they are mounted to the wall above the slab. The device has mounting holes through which holes are made in the wall. Fastening is most often done with metal dowels. This type of hood resembles a dome in its shape, therefore they are also called dome or fireplace hoods.
Suspended. These are the most common models because they are attached to the underside of a wall cabinet that hangs over the hob. Mounting method - bolted connection to the cabinet. That is, before you hang the cabinet and the hood, you should attach them to each other on the table and mark the connection points. Then, through holes are made in the lower plane of the cabinet with a drill and a drill. And then you can do differently: install and fix the cabinet on the wall, and then attach the hood to it with bolts, or make a connection on the table, and then hang the entire structure on the wall.
Embedded. These models are very popular today. This is due to the fact that you do not have to select the device in color and shape, because it will be hidden in a wall cabinet specially made for it. Only the control panel will be visible. Therefore, before installing the hood above the gas stove, you need to remove its dimensions and make a cabinet for them. Or, conversely, select the desired device for the size of the cabinet. True, before that you will have to accurately calculate its power so that it matches the dimensions of the kitchen apparatus. As for the installation, there are no difficulties here. The hood is simply installed in the cabinet and closed with a door.
Inclined. This type of hood is gradually gaining popularity due to the unusual installation. The device consists of two parts: a hood and a mounting panel, which is fixed to the wall above the gas stove. The equipment is made as follows: a horizontal line is drawn on the wall above the slab, then the mounting locations for the holes are marked, after which the panel is applied to the applied line, and an exhaust device is inserted into it.
Island. Installing such a hood over a gas stove is a special case. Firstly, the device got its name only because they are installed above the stove, which is part of the island of the kitchen set. Secondly, the hood is attached to the ceiling using special collets and studs. Installation takes place in this way: collets are attached to the ceiling, studs are suspended on them, which are attached to the first through the thread. Likewise, the studs are attached to the hood. Then the resulting fastening system is closed with a box. If a recirculating hood model is installed above the island, then the decorative box can be omitted. This design is secured with cables that will be visible. There are designs in the fastening of which a combined method is used, that is, studs with collets and cables are used.
Corner. These are conventional wall-mounted units that attach directly to the wall. Only they are mounted not to one wall, but to two adjacent walls, that is, to the corner of the room.

Ventilation duct installation

The ventilation duct is a part of flow-through devices that are made of plastic in the form of pipes of a round or rectangular section, or in the form of a corrugated pipe.

In hoods, the outlet has a circular cross-section, so it is ideal if the ventilation duct is circular. Today manufacturers offer various adapters: from round to rectangular, from one diameter to another. That is, it became possible to use any pipes, regardless of their shape and size. The main thing is to choose the right adapter.

The pipe sections are connected to each other through double-sided couplings or bends. Pipes are usually slightly smaller in diameter than fittings, so they fit easily into each other. At the same time, the complete tightness of the joint is maintained, which is very important in the ventilation system. A corrugated pipe is a single channel that can be bent if necessary. At the hood, it is also connected via an adapter. Fastening is done with plastic or metal clamps.

Technical indicators

In order to accurately answer the question of how to properly install the hood over a gas stove, two more positions should be additionally indicated:

Hood installation height. As for the gas stove, this size should be 85 centimeters.
Device power. It is calculated using a formula that includes the volume of the room (kitchen) and air circulation. The first is the floor area multiplied by the ceiling height. The second is the standard value, which is indicated by sanitary standards. For the kitchen, this figure is 12 m³ / hour. But for a room where a gas stove is installed, this coefficient is 15-20 m³ / hour, depending on the intensity of the device.

Air exchange in the kitchen with a gas stove is organized in two types - general and local. The exhaust device directly above the hob ensures not only the elimination of gases and odors from the entire living space, but also necessarily in order to comply with safety measures and a comfortable stay. To do this, you need to know not only how to calculate the required geometrical parameters, but also how to properly install the hood over the gas stove.

Documentary base

The operation of gas equipment, its maintenance requires compliance with the approved rules and regulations of construction. These include:
regarding the requirements for mandatory forced ventilation of such premises - SNiP 2.04.05-91;
standards for the hourly volume of exhaust air removed - at least 90 cubic meters for 4-burner stoves - SNiP 2.08.01-89;
the required performance of the ventilation unit in the hood above the gas stove is at least 200 m3 / h (GOST 26813-99).

These and other documents provide answers to emerging questions on the topic: how to install a hood above the stove?

In the operating mode, the hood is obliged to localize the spread of odors, vapors, drawing them into the air duct. At the same time, the distance from the surface of the stove to the edge of the hood should be optimal in order to allow free work at the stove.

Performance calculation formula

Installing an extractor hood above the gas stove will be justified if it completely removes the exhaust air. The required power of the device is determined by the formula:

N is the required power,

Q is the volume of circulated air in the kitchen.

In turn, the volume is determined as follows:

where: a, h, b - length, height and width of the kitchen area, respectively.

According to the standards, the height of the hood is selected based on:

exhaust capacity;
human growth at the stove;
architectural features of the premises.

This explains the size range: with a direct hood, its height above the gas stove is selected from 75-85 cm, the inclined model of the hood in the lower part is 55-65 cm. In this case, the width of the working part of the exhaust structure must be no less than the same size of the hob or even overlap the width of the slab. Therefore, they first buy a gas stove, and only then the hood is selected. Standard dimensions are usually indicated in the operating instructions. They can be changed to adjust the height of a person, but not downward.

Attention! All devices for air purification from smoke and combustion products must be certified for installation in the kitchen.

When connecting the system to the ventilation hose, bends should be avoided or made so that they are as small as possible, and the branch itself is of the minimum length. The air outlet is composed of short and straight sections. In a situation requiring a change in its cross section, adapter clips are used.

Types of hoods and principle of operation

Local exhaust - turns on during cooking

There are two options:

The exhaust device works to remove unnecessary vapors, fats, odors along with the air. During recirculation, the flow, passing through the filters, is purified and returned back.
The hood is connected to the ventilation arm. Dirty air masses, being captured, are immediately transported from the room. Alternatively, direct output through the wall directly to the street.

Options for selecting a hood

The main indicator of the exhaust apparatus is the maximum allowable volume of exhaust air per unit of time. The capacity of the hood is indicated in its passport.

Installing the hood above the stove takes into account:

the width of the hob;
dimensions (area) of the kitchen;
ceiling height;
the number of living households;
frequency of food preparation.

According to this indicator, a model of the required performance is selected and the height of its suspension is determined. It is better to purchase a model with several adjustable power modes.

Hood installation

Preparation

Before proceeding with the installation, select the correct place for the equipment - gas stove + hood. In the photo there is an electric stove - recommendations are relevant for gas facilities.

Before installing the hood over the gas stove, you must first prepare the room.

Mark on the kitchen plan the location of all communications, as well as the installed devices, if the installation is carried out in an already operated room.
The volatility of the hood assumes the presence of an outlet (but not above the stove!) With 220 V connected. A model with an automatic switch is preferable: it always turns off in time in the event of a short circuit or fire. If the kitchen is not equipped with a grounded outlet, the rules for installing an exhaust hood over a gas stove prescribe a separate RCD (16 A) in the ESH. Connect to the network a line of three wires "zero", phase, "earth" in yellow insulation with a green strip drawn along.
The value is measured between the drafting device (bottom edge) and the surface of the stove (burner).
The completeness of the packaging is checked for the presence of the necessary fasteners, hooks, dowels, etc.
The place of fastening of the structure is marked.

Installation

the duct is assembled. It can be square or round. Standard version - size 130x130 mm It is better to choose a plastic structure with smooth inner surfaces. Its diameter should be the same along its entire length, correspond to the section of the ventilation opening and, preferably, have a check valve.
The puncher drills holes for the hoods.
Screws are screwed in.
Using the level, the horizontal installation is checked.
The hood is hung (without a box).
Connected to a chimney connected to a duct.
The hood is connected to an electric point. With a missing or short cord, an autonomous line is drawn from the shield or it is diverted from the outlet closest to the hood. It is strictly prohibited to make twists insulated with insulating tape at the places where the missing part of the cord is added.
A test run of the technical device is carried out in all modes.
During normal operation, the box is fixed at the final stage.

Installation options for exhaust technology

According to the mounting design, exhaust devices are:

built-in type - the entire installation is masked in a hanging cabinet;
fireplace and dome type - structures are fixed on the wall;
island model - assembled on the ceiling;
corner hood - placed in the corner;
flat model - assumes two planes of fixation: from the back - to the wall, from above - into the hanging cabinet.

In any of the models, a certain type of filtering elements are provided that absorb strong odors, grease and other secretions.

Used as filters

Grease traps - installed only in kitchens with a ventilation shaft.
Carbon filters are elements of modern cleaning systems with a recirculation mode of operation.

Even with the observance of the rules for installing the exhaust system and operation, the efficiency of work will be underestimated if preventive maintenance is not carried out in time: clean surfaces, change filters. Thus, it is not difficult to create the conditions necessary for a safe and comfortable stay in the kitchen. Various methods are used for this. But it is the forced system with a local hood above the stove that is considered the most optimal and common option.