Modern man no longer imagine life without hot water. Moreover, not only at home, but even in the country. In the absence of a central supply, many choose establish boiler for heating water. The most popular in recent years is considered a model of indirect temperature rise. It is one of the most unpretentious and yet economical.
What is it?
There are two types of such tools, similar to each other: Boiler direct and indirect heating. The second embodiment is a fluid heater that uses the heat of the heating system.
The main difference from another species is that the assembly does not raise the water temperature by means of electricity, and with a central heating or boiler.
Most often in the form of the outer housing is used barrel. At the same time in recent years become increasingly popular cube installation. They are executed in the style of the main boiler and often installed beneath him, thus saving space in the room.
How the system works?
Many people have heard, but do not know how the boiler indirect heating. The principle is simple. There is an inner vessel, which is made of stainless steel or even plastic. Above it is coated with a special heat-insulating material. Inside often mounted metallic heat exchanger (typically of brass). That it embarks liquid from the boiler. In order to ensure rapid heating, it is made in the form of a helical coil.
The housing is created in the style of the other models of the manufacturer.
For protection from corrosion is built magnesium anode. To protect the system from high blood pressure, use a thermostat and a special valve.
In the market there are also options that have other devices of indirect heating boiler. For example, it can be "tub in the tank", and the coolant is started between the walls. Also, several components are used for heat exchange. Similar designs are found on the market much less often the primary option.
cold water supply is connected to the filling capacity. Also present in the tank outlet for hot. Cold water enters the heater, and the output of the consumer receives the already hot. Each boiler is connected to a conduit through which the coolant passes through the tank and the boiler. Such a system necessarily has a pump to create pressure force to create a circulation of fluid.
dignity
This system has many advantages:
- cylinder operation can not overload the electrical circuits in the room, since it depends entirely on heating and does not consume energy.
- Successful models have highest efficiency and the optimal ratio of the flow part.
- Heat transfer fluid does not interact directly with running water. This can significantly increase the service unit.
- Apparatus for heating water boiler allows to deliver the hot direct - there is no need of preliminary draining.
- The unit can always take an alternative heat source.
- It is possible to use multiple heating elements.
disadvantages
Despite all the advantages, this design also has some disadvantages:
- The initial cost of such a boiler above the electric or gas.
- The first tank heating in 100 liters performed for 1-2 hours, which directly affects heating.
- In most cases, such systems should be installed in separate premises.
What to look for before you buy?
The first thing to take into account - the volume. It is important to understand how much water is consumed and at what frequency to a comfortable existence of the whole family. There averages. So on the day by about one person for personal hygiene is spent of 5-15 liters for utensils - 15-25 liters, shower - 50-100 liters, bath - 150-200.
On average, one individual accounts for about 100 liters of water per day. Of course, it all depends on the preferences and habits of the person. Someone is taking a shower twice a day, and someone one is enough.
We must remember that the larger the volume, the higher the price of the device.
Another important detail in this cylinder is the material of the inner part.
For example, it is better to choose the setting, in which a coil is made of brass. The fact that the metal has higher heat conductivity than the same steel. In addition, to clear these items much easier.
The very capacity must necessarily be protected against corrosion. Cheaper options are covered with enamel or glass ceramic. Expensive models are made of stainless steel.
Also it is necessary to remember the insulation of the entire container. In qualitative models is polyurethane foam or mineral wool. And here are the options to foam it is better to reject.
Connection to the system
There are two options by which to connect the hot water boiler - hydraulic and electrical method. More effective is considered the first scheme.
Thus, using just two pump. The action is aimed at single space heating, and the second - to interact with the boiler. In turn, the electrical connection means automatic switching using relay.
Twin-method consists in moving streams in different directions. Every single line of hot water is connected in parallel. In this mode of operation pumps themselves is regulated by the temperature sensor. After each instrument to create an artificial pressure check valve is installed - it allows them to work in individual mode.
Errors during connection
There are several common mistakes that people often accept when buying such units. Thus, firstly, many people choose not entirely suitable place for installation, since the principle of operation of the boiler depends on the distance from the central outlet of the boiler or heating.
In addition, often found incorrect connection to the cold water pipe. It must be connected to the bottom of the unit.
It is also important to maintain a consistent connection of the coolant inlet and outlet, which is key to the efficient functioning. Optimum performance will be achieved only when the liquid for heating will come on top of the heater.
One of the most important points is considered to connect the pump, because its improper installation entails several serious unpleasant consequences. Thus, should the axis is in the horizontal plane, thus preventing rapid wear of bearings. It is also important to constantly monitor screen filters, protecting the pump from debris.
Water heater with indirect system is considered today one of the most economical of these units, which are used in all types of premises. They come in different designs and volume, which allows you to choose the most the best option.
