Standards for the installation of gas columns. Installation of gas column prices.

Such a water heater is one of the cheapest ways to make up for the lack of hot water in the apartment. But to install such equipment without experience and special knowledge is unlikely to work. Only qualified specialists can guarantee high-quality and safe installation. Prior to the purchase of the device and the beginning of the installation work, care must be taken to permit installation from the services responsible for gas supply and administration.

Resolution

To get permission for the gas column, you need to prepare a package of documents. Their list and duration of the procedure depends on the complexity of the installation work:

  • more complex and time-consuming will be obtaining permission for a new column;
  • the permitting procedure for reinstalling the same equipment in the old place is much easier.

Documents for new equipment

In this case, it will be necessary to re-equip the water supply, gas pipeline, and chimney. Permission for such large-scale and risky work is issued by the relevant services. To obtain it you will need:

  • the certificate on a condition of ventilating channels from service of the control of chimneys and ventilation;
  • the technical passport of the device for the preparation of the project for its installation, if it has not yet been purchased, you can confine yourself to indicating the model;
  • the project itself, which is ordered in the relevant gas supply service;
  • a statement to the administration of the settlement on the conversion of housing (served with a ready project);
  • a statement to the gas service about the work.

Documents for reinstallation

In this case, the package of documents is smaller. To receive them, you will also need to contact the management company and the specialized service. The package includes:

  • certified copies of the water and gas supply project, the chimney in the house;
  • plan under the column with the characteristics of the device;
  • a statement to the gas service about the replacement of equipment;
  • statement on repair work on communications.

When all the necessary permits on the hands can install a gas column. It is better to entrust this to specialists of the gas service or commercial organizations with a good reputation.

They will be able to install the device professionally strictly according to the requirements of the current SNiP.

Self-Installation

Experts do not recommend mounting the gas column to its own forces. Even with minor errors in the installation, it creates a threat to those who live in the apartment, and for the rest of the inhabitants of the house. Incorrectly installed installation of such a device can cause leakage, which will cause poisoning, fire or explosion with damage or collapse of housing. In all cases, the likelihood of a lethal outcome is high. The least trouble with self-installation may be a loss of warranty for newly acquired equipment.

Equipment for installation

To perform the installation work, you will need a set of materials for connection to the gas and water supply, chimney, fasteners to securely hang the device on the wall. Regardless of the model, among the materials should be:

  • millimeter tube of galvanized metal, which will withstand high temperatures and will not burn out prematurely;
  • filters for cleaning and softening water, which will slow down the formation of scale and prolong the periods between cleaning;
  • ball valves, couplings, adapters, tees for connection of communications;
  • a special hose for connecting the gas pipe and the corresponding heater pipe;
  • fasteners for hanging equipment on the supporting wall (dowels, anchors, liners, drills).

The room

This heater can not be placed in each apartment. According to SNIP it can be installed in a kitchen or technical room.

Such a premise should:

  • have an area of ​​at least 8 m3;
  • ceilings with a height of 2 meters;
  • walls of non-combustible materials.

A supporting wall of less resistant materials should be protected with a shield of heat-insulating cardboard (3 - 5 mm) and galvanized metal sheet (1 mm). The space for accommodation should provide sufficient free space around the device:

  • from the side panel to the wall not less than 15 cm;
  • from the front panel to any object opposite, from 60 cm:
  • not less than 10 cm from the plate.

The height of the device is adjusted by the viewing window of the front panel, which should be at eye level.

Installation

If the installation works are carried out in a new location, the invited specialist should:

  • to cut in a tube of giving of gas;
  • to mount a gas meter;
  • conduct cladding of the supporting wall with a heat shield;
  • prepare the outlet from the water supply pipeline and the pipe to remove the heated water.

Then the heater itself is installed:

  • the device is suspended by means of fasteners installed in pre-drilled holes;
  • the hose from the tie is connected to the corresponding nozzle of the device;
  • the water inlet connection is connected to a pipe of cold water;
  • the outlet pipe is connected to a pipe for dispensing heated water;
  • on the branch pipe for the removal of smoke fix the chimney flue and the thrust sensor;
  • the reverse end is connected to the adapter installed on the hood.

Checking

After the installation work is completed, a performance check is performed. To do this you need:

  • open the gas supply to the gas pipeline valve;
  • using a soap solution, check for leaks in the gas hose connections;
  • open the hot water tap.

Running the column and leaving the heated water from the tap indicates a successful installation and that the device can be used for domestic purposes.

After that, the gas service specialist is sealed with a gas meter, the owners are given:

  • the certificate of acceptance of the device in operation;
  • the certificate of technical supervision and the Ministry of Emergency Measures on conformity to technical requirements and requirements of fire safety.

The heater installation project is entered in the BTI documents, which completes the official registration for the right to use the water heater.

If the installation of the gas column will be carried out in the same place, as well as the new device according to the technical characteristics will correspond to its predecessor, you should not have any difficulties with the design of the work.

The main requirement: the column must be certified and must be allowed to be installed by the regulatory authorities.

Before starting work, you need to contact the Housing department for providing certified copies of the project of your home. Specifically: you need a plan for the installation of gas, water, as well as smoke removal, a plan indicating the location of the gas column and its technical parameters.

After receiving the above information, it is necessary to write an application to the city gas service with the request to permit the replacement of the column, provided that the former site of its installation is preserved, as well as an application for repair / replacement of the gas and waterways of this section.

The technician must perform these works, after which you receive a signed certificate and, in fact, a column established according to all requirements and standards.

Another case is when the gas column in the apartment is installed in a new location.

This installation of gas columns will pull the change in the supply of gas and water pipes, as well as a change in the chimney system. This, of course, is a more complex and painstaking process.

Documents for installing a gas column

  • certified certificate on the technical condition of the chimney (is the service control of ventilation and smoke channels);

IMPORTANT! It is the chimney, not the ventilation system!

  • the passport of the purchased column: in the case when you have decided on the choice of the device, but you have not yet purchased it, just specify the model of the column (the data will be needed when compiling the project in GORGAZ);
  • a draft installation with a clear indication of the technical specifications for changing the location of the installation of the column (the project is also ordered in GORGAZ);
  • drawn up and signed by the right holder of the apartment an application for its reconstruction (submitted to the city administration);

IMPORTANT! When submitting such a statement, you will need to have on your hands a ready-made project of reorganization work, documents for this apartment and documents confirming your ownership of these square meters.

  • application for work (submitted to GORGAZ, having an approved project on hand).

Gas workers after approval of the plan of all works, if you still managed to get permission to install the column in a new place, you will have to:

  1. make a cut-in in the gas supply pipe;
  2. put the gas meter;
  3. hang a column;
  4. paint the gas pipe in yellow (accepted standard for marking gas pipes);
  5. to wall behind the column with non-combustible materials.

In addition, a separate water pipe must be installed.

When the work is completed, you will have to call a specialist from the district operating gas service. He will set up and run the column. After that, a gas meter is sealed.

And that is not all. You will also need to install the column to receive an act from the fire department, an act from the technical supervision and an act of accepting the column in operation. And the new project should be necessarily brought in BTI.

When choosing a column, be guided by:

  • columns Viessmann, Buderus, Bosh, Wolf and Vaillant;
  • circulating pumps for hot water systems from Grundfos or Wilo;
  • water treatment equipment from Grunbeck;
  • metal-plastic pipes, fittings to them, air vent and safety groups from the German company Oventrop.

Installing a gas column in an apartment: it's important to know

For the device of the chimney, it is forbidden to use a ventilating aluminum corrugated tube! The column setting norms prescribed in the GOS V.2.5-20-2001 for the execution of the chimney design require the use of exclusively stainless or galvanized steel pipes. The thickness of the pipe must be at least 1 mm.

Any decorative panels, by which many tenants close the gas equipment, must be easily removable, i.e. Access to the column should not interfere with anything, and panels or decorative boxes must be made exclusively of non-combustible materials (see SP 41-108-2004).

The gas shut off the gas supply to the new gas column should be mounted near the column and have a yellow handle (see SNiP 2.04.08-87).

In modern gas columns modulating burners may have some inertia. Therefore, in order to avoid emergency situations, the supply of cold water to the column is carried out exclusively on the mechanical filter by a separate pipe (3/4 "size will be more than enough) directly from the riser. Also from the riser lead another pipe to the mixers in the kitchen, as well as in the bathroom and to the drain tank.

IMPORTANT! Before the mixers, check valves should be installed, each at 0.5 Atm.

To equip the hot water outlet pipe heated by the column, it is best to use a meter tube of tempered copper. The diameter of such a tube should be about 15 mm. Instead of copper, you can use corrugated stainless steel.

Only having fulfilled all the conditions of installation can be calm that in the next 10 years there will be no breakdowns in the water heating system, and also that you will not have to hide from regular inspections of the gas inspection.

Brief instructions for installing the gas column

This information should not be regarded as a guide to action. To replace the column with one's own hands, as well as work with any gas equipment is prohibited, not only by law, but also by common sense: such "initiative" in a multi-apartment building can lead to disastrous consequences.

For work use:

  • certified gas column;
  • PVC water pipe;
  • fittings like "American";
  • pipe cutters;
  • soldering iron;
  • metal-plastic pipe for gas supply;
  • fittings for metal-plastic;
  • gas valves;
  • salt and magnetic filter;
  • the Maevsky crane;
  • a conventional water tap;
  • commensurable wrenches;
  • drill;
  • as well as dowels and screws.

The course of work and the main requirements for them:

The choice of the location of the installation of the column should be based on the possibility of fitting the hood according to all the rules and regulations, the convenient location of the column, and the possibility of supplying communications.

The room volume, in which the column will be installed, should be from 8 m³ and more.

The columns are installed only on fireproof walls. In another case, the hard-to-combust surface is faced with a galvanized sheet from 0.8 to 1 mm thick, previously fixing a basalt heat-insulating cardboard sheet 3 to 5 mm thick on the wall.

IMPORTANT! On wooden walls installation of columns is forbidden!

The column is hung on the wall, given that the height of the installation can be arbitrary, but do not contradict the rules for installing the air vent. From the side panel of the column to the wall should be at least 15 cm, and the front of the column should be left at least 60 cm.

In the place of installation, the columns are marked with fixing points, then drilled with a drill. The column is attached to self-tapping screws.

The installation standards for the connection of the column and the water supply system include the use of metal pipes or flexible hoses with an internal diameter of at least 13 mm. At the same time, the length of the hose or pipe should not be more than 2.5 m (similar parameters must be met when installing the connection to the gas supply system).

The gas connection to the column must be installed only when the shut-off valve is installed.

Before installing the chimney check the traction. Under normal conditions, it should be approximately 1.96-29.40 Pa (depending on the type of room).

The gas discharge pipe must have at least 110 mm in diameter, while its length can not exceed 2 m, but it can not be less than 300 mm. The slope of the flue gas pipe must be at least 2 ° upwards.

IMPORTANT! Independently to carry out the first start-up of water on a column it is also forbidden. All works concerning testing the system, installing a new column or dismantling the old one should be done only by qualified representatives of GORGAZ.

The installation scheme of the column should go with the product. There are also given the manufacturer's advice on installing this device.

For installation of columns, only kitchens and non-residential premises suitable for placing data of heating appliances are suitable.

However, in the bathroom installation rules are forbidden to mount the column, because this room does not meet the basic requirements (see SNiP 2.04.08-87 GAS SUPPLY).

In the previous regulatory documents, the installation of columns in the bathrooms was allowed. But after the change of the legislation there can be a talk unless about transfer of a column from a bathroom in kitchen or any other uninhabited premise if necessary to replace the device the new.

The requirements for the installation of columns also allow one to consider each individual case: for example, in a private house that does not belong to a typical building, installation of a column in a wide corridor or a windowless room can be provided, but with an exit, however, to a spacious room with a window.

Installing the gas column

Installing the gas column: price

The cost of work will depend on the column's capacity, and also on the manufacturer. For example, the installation of a domestic column will cost about $ 40, and foreign - $ 60 or more. To install a column in a house up to 15 liters, you will have to pay just over $ 55, and from 15 liters - $ 70 or more.

How much does the chimney installation cost?

On average, from $ 15 to $ 20, taking into account the cost of the required materials.

Given the installation parameters, we get the price for installing the column

  • in Kiev - from 350 to 600 UAH;
  • in Moscow - from 1,600 to 2,800 rubles.

Those wishing to acquire a gas flow-through water heater should take into account the fact that the well-known to computer programmers the principle of "Plug and Play" - "insert and play" - to this device is not applicable.

And it's not about editing and connecting - they just do not represent special complexity, but, so to speak, on the legal side of the issue.

After all, like any gas equipment, the column refers to devices with increased danger, so that all the processes associated with putting it into operation are under the watchful control of special services. In this article we will talk about how to install a gas column, and what documents and recommendations should be followed.

  The main list of requirements concerning this procedure is set out in SNiP 42-01-2002, devoted to gas distribution systems.

In special cases, other normative acts can also be "connected."

For example, with the practice of using plastic pipes and valves for the gas supply system, which is very common today, the requirements of SP 42-101-2003 (dedicated to metal and foam gas pipelines) should be taken into account.

Current regulations require that gas stoves be installed only in kitchens.  At the same time, the following requirements are imposed on the premises and equipment:

  1. The minimum area of ​​the kitchen is 8 square meters.
  2. Ceiling height - from 2 m.
  3. The wall on which the water heater is attached, as well as the masking panel, must be made of non-combustible materials.
  4. In the presence there should be a smoke channel with a diameter of at least 120 mm.
  5. The minimum distance to the wall for the side of the water heater is 15 cm, for the front panel - 60 cm.
  6. The length of the supply pipe should not exceed 2.5 meters, the diameter - not less than 13 millimeters.
  7. Gas supply pipes should be provided with unimpeded access, that is, a hidden gasket is excluded. It is allowed to lay in a box with an opening lid.
  8. On the gas supply line next to the water heater, a well-marked faucet should be installed (the handle is painted in yellow).
  9. It is not allowed to use a corrugated air duct for the extraction of combustion products, which is equipped with kitchen hoods. The pipe must be steel (more durable are galvanized and stainless chimneys) with a wall thickness of at least 1 millimeter.
  10. Under the door of the kitchen there must be a gap for access to outside air.
  11. The distance from the column to the cooker and other sources of open fire should be more than 10 cm.

After installation, the column is placed on the gas meters. The condition of her and the chimney is subject to annual inspection.

In some cases, permission to install a gas water heater can not be obtained:

  • if the kitchen is not a separate room (concerns studio apartments);
  • if the user intends to install the column in a living room, bathroom or on the balcony;

If the unit is supposed to be hung on a wall behind which a living room is located, do not wait for the "blessings" of gas workers.

Algorithm of installation

Consider how to connect the gas column in steps. If the column is installed for the first time or the user has decided to change its location, it is necessary to order the project by contacting Gorgaz or any licensed design firm.

If it is supposed to simply replace the water heater with a more modern one, the project is not needed.

In this case, the user must obtain certified copies of water and gas supply in the Housing and Communal Services Department with the location of the column, and then write an application to the Gas Economy Service to replace it. Of course, gas workers will install the column you bought only if it is certified and "recognized" by official bodies. After the installation is completed, the Act of commissioning is drawn up.

If for some reason gasmakers can not take up the installation of the column and the user has to attract extraneous performers, the latter should be chosen very carefully. If you run into amateurs, the case may end in a serious accident until the gas explosion.

Please note that the characteristic feature of "hackers" is the readiness to install any gas equipment without a project.

Preparation of consumables

Installation of the column will cost a little less if you buy something in advance. Here's what you need to acquire before the arrival of the masters:

  1. A piece of steel pipe with a wall thickness of at least 1 mm, through which the column will be connected to the chimney. The diameter must be specified in the operating manual supplied with the instrument. In some models, such a part is included.
  2. A ring-rosette that will allow the entrance of the chimney to be shaped.
  3. Water filter. If its quality is satisfactory, an ordinary domestic filter of coarse cleaning, commonly referred to as a sump or an oblique filter, will come off. If the water contains a large amount of hardness salts, a filter with the softening effect will be needed. Without it, the column will very often have to be descaled.
  4. Mounting kit consisting of necessary fittings, pipe parts (corners, tees, adapters, couplings), sealing material and fittings.
  5. With a gas hose.
  6. Drills for work on concrete and dowels.

Also before the installers arrive it will not be superfluous to check the completeness of the water heater, if you forgot to do it in the store.

Before inviting masters, make sure that the root valves on the water supply lines are tight. Sometimes they present an unpleasant surprise, because of which the installation process is not only prolonged, but also costs a little more.

Installation of equipment

The sequence of actions for installing the column usually looks like this:

  1. The wall is marked: holes will be made on it. The column should be located at a sufficient distance from the plate and at such a height that the viewing window was just at the eye level of the user. The length of the vertical section of the stack from the column should be 500 mm or more with a ceiling height of 2 meters and at least 250 mm if the distance from the ceiling to the floor is equal to or greater than 2.7 meters. Also, the requirements of the norms mentioned above should be taken into account.
  2. Drilling holes, they put in the cores of dowels, and then fasten the mounting hooks, on which the column is hung.
  3. A tee with a ball valve and a filter is inserted into the cold water pipeline, which is connected by a pipe or a hose to the inlet connection of the water circuit of the column. In the collector scheme, the pipe is laid from the manifold branch, and a ball valve and filter are mounted on it. Note that the input and output fittings are not equal - it is important to identify the input. If a steel pipe is used for the connection, it is necessary to seal the threaded joints with a stick, flax, FUM tape or "Tangit Unilok" thread. In the case of using a hose (flexible piping) in the application of the sealant is not necessary - the tip of this element is already equipped with a gasket.
  4. Similarly, a hot water pipe is connected to the outlet.
  5. Then, smoothly open the root valve on the cold water line. In this case, you need to monitor whether there will be a leak in the joints. If there is - you need to squeeze the nuts (the length of flexible liner) or add a sealant.
  6. The gas connection of the column and the tap on the gas supply line are connected by a hose, which must be clamped with clamps. The tightness of the joints is checked with a soapy foam - in the presence of leaks, it begins to bubble.

It remains to fix the pipe on the smoke pipe and mount the traction sensor according to the instructions. The second end of the pipe is inserted into the duct of the chimney by means of a special adapter. Now you can perform a trial run.

When designing water supply systems, it is necessary to correctly select the pipe parameter. Here are tables of diameters of steel pipes, their mass, material and thickness.

Cost of installation of a gas column

We will quote the average level of prices for different types of work:

  • dismantling of the old column: 250 rubles. (if it has not been disconnected from communications, it is necessary to pay another 900 rubles.);
  • installation of a new column (with connection): 1900 rubles;
  • installation of a gas crane: 100 rubles;
  • fastening flange to the chimney: 350 rubles;
  • flue gasket: the price of work depends on the length, the minimum is 800 rubles;
  • additional payment for the independent purchase of materials by the master: 500 rubles;
  • column setting: 1200 rub.

If there is a need for any additional work, they are paid by agreement.

Thus, the connection of the column costs, on average, 4500 rubles. (the cost of materials is not included).

Rise in cost of work takes place under the following circumstances:

  1. If the master had to purchase additional materials in the store.
  2. If necessary, lay pipes longer than 1 m (regarded as a separate type of work).
  3. If you had to change the old chimney pipe from the place of connecting the column to the chimney.
  4. If the root valve on the water pipe was not leaking.
  5. If it is necessary to replace the existing gas tap.
  6. With a significant removal of the object (outside the city).

Usually it takes only one working day to complete a set of works.

For a fee, the column can be installed a few hours after the request is made or the next day.

Installing the gas column with your own hands

From what has been said above, it can be seen that the installation and connection of a column is not a difficult job.

It is only necessary to remember that the water heater should be properly set up, because the factory settings are suitable only for trial start-up.

Adjustment work should only be carried out by a specialist. If an amateur takes over for them, the work of the device can be uneconomic, and he himself will require repairs in the near future.

And most importantly: the independent connection of any gas equipment is prohibited by law and entails the payment of a significant fine. Neglect these requirements should not be, because if the connection is incorrect, it can result in a gas explosion. Sometimes, when the ignition system is poorly regulated, the column lights up with a loud pop.

This phenomenon helps to see firsthand the danger inherent in natural gas: even a small amount of it, which managed to accumulate over the burner in a few seconds, when it comes into contact with a spark or flame, immediately detonates. If, due to improper connection, the gas fills the entire kitchen, the explosion will be thousands of times more powerful and will be able to destroy not only the apartment of the unlucky fitter, but the entire entrance.

The instruction given above is given not for practical use, but for giving the customer the necessary awareness. She will allow him to feel more confident when discussing with the performer the list and cost of work.

New generation gas columns have a number of advantages and functions, so choosing a device is not so easy. In order not to regret the money spent, you should know,. The next article is devoted to this.

The device for sewerage and drainage system for the bath is described on the page.

Video on the topic

Gas column  - this is not a refrigerator, which is enough to just plug into the outlet immediately after the purchase is delivered to the house. Such devices can not be sold without appropriate service support. The water heater will only work most efficiently when it is properly installed and adjusted. There are many objective reasons that must be taken into account when installation of gas columns in the apartment. Otherwise, this will entail not only problems with operation, but will also call into question the safety of the user's life.

At first, connection of a water heater in the house  to the centralized source of gas supply should be carried out only with the help of a metal hose, and not a rubber hose,

Secondly, it is necessary to find out the diameter of the section of the chimney, since in the case of its ignition, it is not possible to secure it to separate elements of a common system. In addition, it is desirable to install special filters for gas and water, since both these substances are not very clean.

Service firms that have a license for installation, all these nuances are observed. But at the same time there is an impressive number of so-called "wandering installers" who do not burden themselves with such knowledge. Therefore it is unreasonable to risk the quality of installation and operation of the column, pursuing the desire to save 1500 rubles.

→ Consumables for work


Cost of services

→ Requirements for installing gas columns.

Norms and rules

→ The use of gas flow-through water heaters is regulated by the rules and regulations concerning household appliances in which gas is used. Installation and maintenance of these devices can only be carried out by a qualified technician in accordance with current regulations.

Placement of the water heater.

→ Place the heater in the immediate vicinity of the flue gas duct.

→ It is forbidden to place a column above a plate and in general above any device that form fatty pairs, in order to avoid disruption of the apparatus due to contamination.

→ The wall and mount must withstand the weight of the unit.

→ It is necessary to observe a free space around the water heater at least 100 mm from each column wall.

Additional requirements.

→ The water pressure in the unit, taking into account the thermal expansion of the water, should not exceed the maximum pressure.

→ Provide expansion tank if necessary.

→ Avoid excessive pressure loss.

→ Be sure to attach the unit to the chimney using a pipe of the appropriate diameter from the corresponding material (aluminum or stainless steel).

The apparatus using natural gas for operation is considered the most advantageous variant of the water heater. If there is a need to replace the old column with a new one, the owner of the equipment must know what documents are needed for this and what work is required.

When is the replacement necessary?

Replace the old column with new equipment decide if:

  • The device does not turn on at all.
  • The main nodes of the column are out of order.
  • They want to replace the outdated model with a more modern one.



Important nuances

  • The installation of a gas heater should be handled by professionals who are able to work with gas equipment.
  • If the water heater is in the bathroom, and so often in old houses built in the 50's and 60's, it is not necessary to transfer it, although the installation of new columns in such a room is not recommended because of insufficient volume (it should be at least 15 m3) and the absence of a window.
  • It is important to make sure that the ventilation of the room is sufficient.
  • If you want to hide a new column behind decorative panels, you should make sure that they are non-flammable and easily removed.



How much does the replacement cost and what does the cost depend on?

On average, you need to pay about 3000-5000 rubles for installing the column.  Depending on the model and the manufacturer, the price can be as low or higher. Separately, they pay extra for the dismantling of the old apparatus (this costs about 300-800 rubles).

The cost of replacing the column includes the call of a specialist at home to disconnect the equipment from communications, dismantle the speaker, and install and connect a new device. Also, the master takes charge for the work on adjusting the column.

The cost of works will be higher if:

  • You must additionally purchase any materials for installation.
  • Need to conduct additional plumbing work.
  • It is required to replace the chimney.
  • It is necessary to replace the gas cock.



Required Documentation

In the case of installing a new column, instead of the old one, the following documents are required:

  • A copy of the project from the Housing Office, which marked the location of the column, the features of gas and water supply, as well as smoke removal.
  • Passport for a new column. If the device is not yet purchased, you can simply specify the model.
  • Act on the state of the chimney.
  • A statement to the gas service about the need to replace equipment while maintaining the old installation site.
  • Application for permission to work on the gas main.





Dismantling the old speaker

Work on replacing the column begins with the dismantling of old equipment:

  • First turn off the gas supply and unscrew the gas hose.
  • Then, turn off the water supply by tightening the corresponding tap.
  • After that, the column is disconnected from the chimney.
  • Once the equipment is completely disconnected from the communications, the column is removed from the fastenings.