Bottom connection through a special unit
There is another scheme of connecting the heating radiator. In its implementation, the heat supply and return flow come from one side, through a special unit, which is connected either separately to the radiator, or with the bottom connection.
This option carries a large heat loss, which reaches about 20%. However, the advantage of such a connection is that the pipes are hidden from view and are not in a visible place. Pipes in this connection can be completely hidden in the wall so that the corner connection knot of the heating radiator will be completely invisible. This connection scheme is most often used in the radial heating system.
In contrast to the partner, has a direct and return pipes, the purpose of which, respectively: to supply hot, return the cooled water. Each radiator in the system is connected in parallel. This increases the heating of the far reaches of the circuit. Two pipes allow you to install regulators in front of each radiator, which set the desired temperature.
The disadvantage is the complexity of installation and increased costs.
Synopsis. The cost is almost doubled, compared to the single-pipe heating system.
HOW TO ADD A RADIATOR TO EXISTING HEATING SYSTEM Pt.1
Natural circulation of water through the batteries
In individual apartments, private houses and cottages, the natural circulation of water is most often used. This system consists of the following elements:
- The pipeline (supply and return);
- heating element;
- expansion tank.
Scheme of the heating system with natural circulation. The coolant moves through pipes, located on a slope.
Water in such a device moves according to the natural laws of physics, without any forced action. The heated liquid rises along the riser and is squeezed out by the cold stream from the return flow and moves to the radiators.
First, the water is heated in the boiler and flows through the batteries, where it gives off heat. Then by the return pipe returns to the boiler already cooled and heated again. The cycle is constantly repeated.
Pipelines are laid with an inclination in the direction of the fluid flow.
When installing a heating system with natural circulation, take into account some points.
- Heating boiler is installed below the level of the radiators.
- The diameter of the pipes is not less than an inch, and in some cases even more.
- The slope of the pipes is about 1 cm per meter.
- Expansion tank. a necessary element of the system.
- The minimum water temperature is 55 C.
- The pressure in this case is small, so the diameter of the pipes should be large.
When installing the pipeline, you need to have as few obstacles as possible for the movement of the coolant: bends, turns, lifts. Choose the most convenient way of laying pipes.
Pipes can be made of different material: plastic, metal-plastic, metal. Each type has advantages and disadvantages. For example, metal plastic is more lightweight, does not require painting. Metal pipes have the ability to heat, which facilitates the heating of rooms.
How to add a radiator to the heating system
You are renovating your apartment or house. The question of what to replace the old cast-iron radiators. You want to choose something more stylish. Some neighbors praise aluminum, others. steel, others. bimetallic radiators. Let’s look at how they differ from each other.
In Leroy Merlin there are three types of radiators: aluminum, steel and bimetallic. We consider the advantages and disadvantages of each type.
- easy enough installation and maintenance;
- stylish design;
- high heat output: instantaneous response to the temperature of the carrier, rapid heating and cooling, and therefore energy saving;
- high working pressure, 16 atm;
- variety of shapes;
- low weight of the section;
- optimal price.
- demanding to the quality of the coolant: high alkali can lead to rust and gas formation, the joints between the sections can begin to leak;
- it is necessary to periodically remove air from the upper collector with the help of the air vent valve;
- the most vulnerable parts of aluminum radiators. screw joints of the sections (if you compare them with steel).
- Steel. Batteries made of this material are best used in private homes: steel radiators require a stable pressure of the coolant. Lasts for 15-25 years (with purified water and pressure control).
- Rapid heating and cooling (only slightly inferior to aluminum radiators in this characteristic);
- high heat output;
- stylish design;
- optimal ratio of cost to power;
- Low operating pressure from 8.7 atmospheres.
- may not be able to withstand the pressure of hydraulic shocks;
- They do not react well to oxygen, which can enter through the pipe system. Steel radiators can be panel or tubular.
The tubular radiators are arranged simpler than panel radiators, respectively, they are more reliable. They have no inter-sectional connections, so the risk of leaks is lower. Tubular batteries are more resistant to water hammer. These radiators have a design reminiscent of a staircase of vertical tubes. colored radiators look the most advantageous, they can decorate modern design interiors.
Panel radiators have a more complex internal structure: zigzag steel plates connected by spot welding are hidden under the housing. The resulting cavities serve as channels through which the hot water circulates. One of the advantages of panel radiators is their flat surfaces, it is easier to clean the dust from them.
Connecting the battery to the heating system
Prior to installation, the battery is assembled and all connections are sealed with packing compound. Before that a wide layer of paste is applied to the threads, distributing it over the future connection, then the hemp is wrapped around the pipe in the direction of the thread. Then put the nut from the faucet and carefully connect the whole structure. Do it by hand at first, and then tighten with a wrench. To install similarly cocks and stoppers Maevsky.
- Install all functional elements on the radiator.
- Blowoff valve is screwed into the euro adapter is placed against the point where the pipe will connect to the flow of heat.
- If the supply and return diameters do not match the spigots, adapters are used.
- Install ball valves.
- Connect the supply and return pipes to the radiator using a method that depends on the brand of pipes.
- Before water supply the assembled system is pressurized with overpressure of water or air up to 3-5 atm. During this process, check that there are no leaks from the connections.
The choice of distribution of pipes depends on the system of connection: one-pipe or two-pipe, and the way of circulation of water in pipes: natural and forced (by means of circulation pump).
One-pipe system is based on the serial connection of radiators. The hot water heated by the boiler passes through all heating sections in one pipe and returns to the boiler. Distribution types for one-pipe system: horizontal (with forced water circulation) and vertical (with natural or mechanical circulation).
In vertical distribution, pipes are perpendicular to the floor (vertical), the heated water flows up and then descends through the riser to the radiators. The water circulates on its own, under the influence of high temperatures.
Two-pipe system is based on parallel connection of radiators to the circuit, that is, hot water is supplied to each radiator individually through one pipe, and the water is discharged through the second. Wiring types. horizontal or vertical. Horizontal distribution is carried out by three schemes: flow-through, dead-end, manifold.
Connection of convectors to the heating system is carried out by the following methods: bottom, top, unilateral and diagonal (cross). Depends on the installation plan of the radiator depends on the circulation of the liquid inside it.
For one-pipe and two-pipe systems, vertical distribution is mainly used for houses with two or more floors.
Ways of connecting the radiators
The classic multi-section radiator consists of several sections that transfer the heat from the coolant to the surrounding air. When assembling the radiator, thanks to the threaded connection, the upper and lower collector of each section are tightly connected to each other, increasing the total length. A closed system is formed, which uses the coolant as source of energy.
There are 3 schemes for connecting the heating battery to the system:
It’s not complicated: step by step instructions for installation of radiators in a private home with connection
Own boiler house provides year-round comfort and coziness: you can turn on the heat supply at any time during the cold summer, turn it off with the advent of warmth in the spring.
Independence from the whims of utility companies and the schedule of heating from the CHP is a distinct advantage of an autonomous system of a private home.