Modern energy have a high cost, so each owner of an apartment or a country house think about how to make the heating system more energy efficient. Not so long ago it did not have the ability of users to regulate the flow of heat into the room, thereby saving consumption. The construction industry is constantly improving and is now available a special device - thermostatic valves. This is simple, reliable and inexpensive elements allowing to maintain the desired indoor air temperature and to regulate power consumption. The principle of operation, types and characteristics of the thermostatic valve discussed below.
Assigning device
It happens that in the premises, in addition to the radiators, are the other heat sources - household appliances, gas or electric stoves, and so on. On sunny days, the temperature rises and the house becomes warmer than normal.
Important! The task of a thermostatic valve fixed to the heatsink - automatic temperature control, during which it takes into account the temperature fluctuations in the room at a height of 2 meters.
Thermostatic valve for radiators provides reliable thermal equipment. Including it in the heating system, it is achieved an optimal and comfortable temperature in the room and, at the same time, saves money spent on power consumption. Valve stabilizes the operation of the heating system if the pressure drops or disappears in it.
Design
There is a large variety of models such valves, but their design is similar.
Mandatory arrangement involves the following elements:
- housing, usually made of brass;
- mixer is used as a direction controller;
- control lever;
- Other small details in the form of gaskets, nuts and so on.
The valve body 2 inputs and 1 output. Inputs received through different temperature liquid, and after it goes out, pre-heated to the required temperature. In the interior of the housing is a mixer regulating direction. This element, depending on the valve model, functions differently. A simple embodiment - a spring locking element responsive to temperature and pressure, respectively, and mounted in the construction. If the spring tension is increased, the outlet temperature decreases.
The control knob is needed in order to set a specific position of the valve. With the help of the spring constant is set and adjusted position of the locking part.
Principle of operation
In the housing device, in the frontal and right nozzles, the coolant circulates up until its temperature reaches the set value. The thermostatic valve is set to maintain the desired outlet temperature, in the liquid mixing in cold or hot water. If the parameters do not converge, the external drive device acts on the plunger. When it begins to move in the housing opens all 3 channels. And as soon as the temperature parameters are stabilized, the front inlet is blocked.
There is considerable diversity of thermostatic valves and three-way valves. One variety is similar to a ball valve. In this model, the switching valve consists of a ball with a sample instead of the seat cone. To redistribute the heat transfer fluid actuator acts on a rod with a fixed ball, turning it. Such valves have a low capacity, so are used only in domestic heating systems. Briefly, the thermostatic valve sets the desired water temperature.
What types of valves are
Design features - is not the only thing that distinguished modern thermostatic valves. These elements are made of different materials, have different diameters and connection methods. Take a look at the main types.
Material
The main condition - the material from which the valve must be resistant to mechanical stress and corrosion. The reason is that the element is in continuous contact with a liquid - the coolant.
The material from which made the valve depends operational and technical characteristics of the product. It is recommended that the valve has been made of copper, brass or iron. Copper options are expensive, but for a long serve. Brass samples also have long life and do not cause complications during the operation. In general, to make the right choice, it is better to seek advice from experts of the company, which will adjust the heating system.
control method
species secrete two devices on this parameter:
- electrical;
- manual.
Often set the manual option, visually similar to an ordinary ball valve. More recent models of the electrical filling are popular in private homes - they are controlled automatically, distributing the heat around the room. Adjust the thermostatic valve is simple - the user puts the desired heating temperature for each room and the instrument supplies the working fluid to the radiator. If desired, such a system is combined with the "warm floors", but required to consider a method of creating a protective coating for pipes.
Wiring diagram
Figure out what is in the valve and on what basis it works, look at the various circuits connected. It all depends on the purpose for which is set thermostatic balancing valve.
Why the need for valve:
- Protects solid fuel boiler condensate from impact and thermal shock that occurs due to a sudden power outage.
- To coolant circulating in the system "warm floor" is not warmer than 45 degrees Celsius.
- It maintains the desired temperature of the coolant in the heating system, and hence the pressure in the pipeline.
To protect the thermal unit, the solid fuel is not allowed, so that its contour fell The cooled water from the heating system. For this boiler is connected by a special scheme, which includes not only the mixing valve, but also bypass. Operation of the circuit is as follows: heat transfer fluid will circulate in a small circle through the bypass as long as the heat source to warm up. When the temperature reaches + 50-55 degrees Celsius, will begin to open the valve, mixing in cold water from the system. When the boiler is released to the operating temperature, the bypass and block the entire flow starts flowing through the radiators.
Similar functions when connected to the system "warm floor". Pump ensures coolant circulation in the loop as long as it will not cool down. Once that happens, the sensor is activated and the valve and the system will start adding the hot water from the boiler.
This important detail is also used when tying the solid fuel boiler and buffer tank, which acts as the heat the battery. For its effective heating temperature should reach a level of + 70-85 degrees Celsius, which is higher than the norm for the radiators. Thermostatic valve is used to lower the temperature. To this end, it is set for capacity, paired with pumping equipment.
Note! When setting the mixing valve, the pump must be positioned on the side where the pipe is always open faucet.
Often switching thermostatic valves are installed in a large cottage with a complex heating system, with gidrostrelkoy and distribution manifold. Each circuit in such a situation requires a certain temperature. The highest rate of heat boiler is needed, therefore, is not supplied thereto regulating the temperature. But for other consumers is supplied as hot heat transfer medium, so it is connected through thermostatic valves.
Special features
Heating system collected under various schemes, which will depend on the location of the hot water pipes, plugs, and control valves. Before starting the installation, you need to shut off the coolant to the radiator and drain the remaining water.
When one pipe heating system hot water is circulated through a conduit and heating devices connected in series. The coolant supplied to the radiator by means of a special pipe installed above. The circuit passes through the battery and is on the other hand, forwarded to the highway. When connecting the thermostat is mounted on a bypass connecting the forward and reverse tube heating appliance. And even if the valve is closed, the hot water will still continue to move. the thermostat may fail because if you do not install a bypass pipe. If you disconnect a battery, failure is not only the valve, but also for the entire heating system.
In two-pipe systems, the situation is different, since it is fed by a tube heat transfer fluid, and on the other it is given. Jumper, i.e. bypass such a situation is not required, so the thermostatic valve is installed on the supply pipe. Control valve is effective in individual heating systems. And it is relevant to centralized networks, but considering the fact that the hot water meter is provided.
Before you begin setting up the thermostat in the first place need to isolate the room from heat loss. To do this, close all doors and windows. Next, the valve is set to maximum heat output, and include heating, after which the room temperature is measured. After its increase by 5 degrees, the valve is closed. Now we need to wait a little bit and gradually open the regulator until then, until the water comes. This provision should remember.
