In the summer, due to the disconnection of hot water, many of us are puzzled by the purchase of an electric water heater or a boiler for heating water. The choice of boilers on the market is quite large. They are both flow and accumulative. There are plenty of manufacturers too. Among the most popular are companies such as Electrolux or.

Buying a water heater is not difficult, but it also needs to be installed correctly. The principle of installation and connection of the boiler is the same for most models and rarely depends on manufacturers. Today we'll talk about how to connect the boiler to the water supply in the apartment correctly, we will analyze all the intricacies of connecting and the materials that are best used for this, as well as how to drain water from a storage boiler.

Connecting a storage water heater (boiler)

In order to correctly connect the water heater to the central water supply system, let's look at the tank itself. To connect to any water heater there are two threaded fittings.
On some models, there is also a third fitting. It is needed to drain the remaining water from the tank when it is dismantled. The fitting with a blue ring is the cold water inlet, the red ring is the hot water outlet.

Before you connect the boiler with your own hands, you must decide in advance how you will connect it. There are three most common connection types:

- for polypropylene pipes;

- on metal-plastic pipes;

- for flexible hoses.

Metal-plastic is gradually leaving the market, giving way to pipes and fittings made of polypropylene. Of course, it is easiest to connect the tank to flexible hoses, but they have a very narrow conditional passage, and this can affect the performance of the water heater.

We recommend connecting the water heater to polypropylene. You may have to tinker a little, but the connection will be of high quality and it will look much better and more pleasant from the outside. As a rule, the diameter of the fittings on most water heaters is 15 mm or half an inch 1/2.

Connecting the boiler with flexible hoses

- two polypropylene couplings with American women;

- ball valve made of polypropylene;

- brass tee;

- brass;

— back-safety valve;

- a meter of polypropylene pipe and a pair of couplings for soldering;

- apparatus for soldering pipes.

Couplings with American women are needed to switch from a metal half-inch thread to polypropylene. In addition, Americans can always unscrew and dismantle the boiler. A polypropylene tap must be placed at the outlet of the water heater to shut off the flow of water from the tank.

Connecting the boiler to polypropylene

This valve is usually supplied with the boiler; without it, the water heater will not work correctly. It has two ends with external and internal threads. Thread diameter standard 15 mm. At one end we wind it onto the inlet fitting of the boiler, and then at its other end we wind a coupling with an American or flexible piping.

The valve has three functions:

- prevents the flow of water in the opposite direction;

- prevents a jump in excess pressure in the tank itself.

- discharge of water into the sewer through a special drain

Scheme of connecting the boiler to the water supply

If a special outlet for draining water is not provided on the tank body, then it is possible to install a threaded tee made of brass or polypropylene at the very inlet in front of the check valve, or at the hot water outlet. And already on the side we put a brass ball valve, preferably with a "butterfly". It will take up less space than a long arm faucet.

On this tap, you can pre-pull, for example, the usual one for draining water, into a container prepared in advance for this. In the event that it is necessary to completely drain the water from the boiler, simply open the tap and wait until all the water has flowed out of it.

After you have hung the boiler, connected everything, you need to check all connections for leaks. As you can see connect the boiler to the water supply in an apartment is not as difficult as it seems at first. If everything is done correctly and slowly, then you can save some money on the services of installation organizations. Watch the video.