Without hot water in the house talking aboutcomfortable life is not necessary. It's not okay to wash the dishes, take a bath, or use the shower. The most common option for obtaining heated water in high-rise apartment houses is to connect the piping of the centralized water supply. However, residents of the private sector and country cottages are often deprived of this opportunity. The solution still exists!
This device is designed for heatingcold water supplied to it, and issuing hot to the consumer. There are gas and electric modifications, as well as using indirect heating. In the first flow of water passes through the heat exchanger, heated by the flame of the combustion gas. Electric, there are two modifications: storage and flow. The latter work by analogy with gas, but use a heater. More interesting are those who accumulate cold water, and then gradually heat it with a TEN. Such models have become most widespread due to relatively low power consumption and ease of use. We will discuss them in detail.
The main advantage of gas water heaters -this is the high capacity of the built-in burner, so that it can be heated in large quantities of cold running water to high temperatures. In other words, if someone likes to luxuriate in the bathroom, the water heater, which uses gas for its work, seems to be the most optimal option.
If you select a device that heats the water atelectricity assistance, then no permits for installation are required. The connection scheme for a boiler of this type is also very simple, so you can do it yourself. From an economic point of view, such solutions are often preferable to gas analogs. The drawback is only in the limited supply of heated water, which can be given once (for storage-type models).
Self-assembly of any equipment mustStart by reading the accompanying instruction. Otherwise, you can not only get a completely inoperative system, but even ignorance damage the device. If you do not go into details, the boiler connection diagram is as follows: piping cold (supply) and hot (outlet) water are connected to the nozzles on the tank. The device is connected to the electrical network and the desired heating value is set by the analog or digital controller. It is necessary to open the tap (a point of draw-off) - and hot water rushes along this way, being squeezed out cold, coming from the water supply system.
But the simplified scheme of connecting the boiler after allcan not serve as an instruction for editing, so let's look at all the key elements in more detail. Most of the electric water heaters come with a power cord and a plug that allows you to connect to the outlet in the usual way. Some manufacturers, however, decide to save a little and "forget" to put these things in the delivery set, as a result of which the owner has to independently buy them. The first important thing is the correctly selected wire.
In addition to the power cord, the wiring itself must bestate to pass through the desired current, and protection - to withstand. Imagine a situation where an electric water heater is installed in the bathroom, where it is plugged into the outlet. Let its power of 3 kW. For 220 V networks, this corresponds approximately to a current of 14 A. The conductor cross-section is 1 mm. sq. m. In this mode, the equipment can work.
The easiest way to power the boiler with electricitysimply plug the power cord plug into an outlet. So many people do. We recommend that you spend a small extra amount and purchase a special electrical device - RCD. Using a residual current device several times reduces the likelihood of an electric shock due to possible malfunctions in the boiler circuits.
- If the RCD "knocks out" for no apparent reason, then it is worth trying to deploy the plug, changing the polarity;
- make sure that the heater is whole (having the skills and the appropriate tool, you can ring the housing).
Wiring diagram of a storage tanknecessarily involves the use of a special device - a safety valve. It is always supplied complete with a water heater, and if for any reason there is no, it must be purchased separately. Outwardly it is a small tube with an additional third output.
Imagine that the owner of the boiler exposed toohigh heating temperature. The closer to the boiling point, the more intensive the expansion. And since the capacity of the tank is tight, the pressure on its walls increases, which can lead to their destruction. The safety valve is mounted on the cold water pipe of the boiler and is designed in such a way as to work when the pressure rises. During installation, you need not make a mistake with its orientation - the body always has an arrow indicating the normal movement of the liquid through the element.
The scheme of connection of the boiler to the water supply system, exceptof said relief valve may include an additional device, a water pressure reducer. It is a small hermetic element with two threaded nipples. For work it does not require connection to electricity.
Although the scheme of connecting the boiler to the water supplycan be carried out without additional elements, with the exception of the safety valve, it is still recommended to think in advance of the ways of servicing the device. Since the supply is carried out directly from the main cold water supply line, if necessary, to replace the heater, to disconnect the pipe connections, etc., it is necessary to disconnect the water supply to the whole apartment. In order to avoid this, it is necessary to install shut-off valves on the supply and exit pipes of the water heater at the installation stage. It is better if they are spherical, not reducing the diameter of the pipe.
Sometimes water heaters are used asreserve hot water source. Usually we are talking about dozens of points of water. Even a 200 liter water heater may not be enough. In such cases, a scheme is used to connect two boilers or even more. It is simple: from the outlet pipe of hot water the first pipe extends to the supply of the cold from the second, and already its output goes to the consumers.
That is, a sequential circuit is used. This allows you to reduce power consumption, as one of the boilers will be less likely to turn on, and do not think about equalizing the pressures.
The products of the Czech producer "Dražice" are veryis popular. The company produces both electric and indirectly heated boilers. The latter is connected with a number of nuances. So, the scheme of connecting the boiler "Dražice" heat exchange (indirect) version is designed for the use of an additional pipe route - the output "Recycling". This line extends from the farthest consumer of hot water, returns to the circulation pump, and from it to the "Recirculation" hole at the beginning of the wiring. As a result, a closed loop is obtained, along which hot water circulates, so that, having opened the tap, there is no need to drain the already cooled.
Scheme of connecting an indirect boiler inMost models are identical. Unless with rare exceptions. The heat source in the house through the heat exchanger heats the water in the boiler itself. Cold supply is performed at the lowest point, the middle branch pipe is intended for recirculation, and the hot one is taken from the upper point. The correct connection scheme for the indirect heating boiler assumes that the heating liquid moves from the top to the bottom, which makes it possible to achieve the greatest efficiency. The most common solution is a three-way valve. In this case, two circuits are used - main (heating) and additional (water supply). While there is no water intake, the heating circuit fluid passes through the heat exchanger, but it is worthwhile to open the tap and the DHW starts circulating through it. Thermostat controls the switching of the circuits.
Scheme of indirect heater connectioncan be implemented differently - on two pumps. The first creates a movement of the coolant in the heating circuit, and the second - in the DHW system. If you need hot water, then turn on the appropriate pump, the heating is switched off and supported by a non-return valve. The connection diagram of the boiler with the boiler depends on the model (it is part of or is a separate device), and also on the chosen implementation.
