Raden's heating radiators from the manufacturer Galetti S.p.A. have proven themselves well among ordinary people. The quality of these devices is confirmed by numerous studies and certificates. And most importantly, such batteries are adapted for use in the harsh Russian climate. They are suitable for use not only in residential and commercial premises, but also in industrial facilities. They differ in ease of installation, according to reviews from numerous consumers, in an affordable price category and a long service life. Thanks to the patented casting technology and the special composition of the topcoat, they are characterized by safety and environmental friendliness in operation.
Testing of samples of Raden's products showed that there was no release of any substances during their operation. Hence, it is absolutely safe to use, even in rooms with small children. The high popularity and demand for this brand is confirmed by the presence of numerous fakes. Therefore, when buying, you should pay close attention to the packaging, accompanying documents and the complete set of radiators.
About the advantages of the Radena brand
Skeptics often like to say that Raden's heating radiators are Italian only "on paper". They are actually made in China. So what? Today, many popular brands have moved their manufacturing facilities to the PRC. It is not the country of origin that is important, but the production process. Apparently, Radena is all right with this, as experts praise the brand for high-quality products.
For example, craftsmen from different parts of the country often claim that Radena heating equipment is considered the most demanded among customers in their particular locality. Excellent durability of products is noted. Let's make a reservation, subject to correct use.
Radena bimetallic radiators are successfully used in both centralized and autonomous heating systems.
There are often cases when the owners, due to ignorance of the basic principles of work, block products with taps on both sides. They think it will be safer that way. This should not be done! Sooner or later, the pressure will reach a critical point, which is due to the gradually accumulating hydrogen inside. After a certain period of time, the device, as they say, explodes.
It is believed that Radena products are one of the few that pass the so-called “5 rubles” test without unnecessary problems. Although the "term" is common among specialists, it is quite possible for an ordinary person to perform the test. It is necessary to put the radiator on a flat surface and try to push a coin of the denomination indicated in the name under it. There shouldn't be any playthroughs.
We have already talked about some of the production aspects above. Another one should be mentioned. Radena radiators are almost the only ones on the domestic market that are painted in sections. Only after applying the protective composition, the different components are combined into a common structure. You untwist the product, it is uniform white everywhere.
Double staining eliminates fading. Even the gaskets are aimed at extending the service life. How? The seemingly insignificant parts are of the self-centering type. Thanks to this, the collector remains level for a long time. "Walking" on the sides is excluded. The absence of a leak is explained by the unwinding effort, the value of which exceeds 50 N. m. If you make a vertical cut of the radiator, you can actually see a wide ellipse instead of a rhombus.Due to this feature, strength and heat output are provided.
The listed advantages are more typical for aluminum, but bimetallic products also combine some of them. Plus, it is exactly a complete bimetal. No compromises like the Rifar. This fact alone speaks volumes. Where the main has been taken care of, the secondary will never be forgotten. Radena is responsible for quality on all counts!
Do not consider our article advertising. On the contrary, we publish independent reviews to provide readers with an unbiased opinion of the various products sold in the market. But if some products have pronounced advantages, it is always appropriate to mention them, which we did. Approach the final choice only after a comprehensive study of most of the options offered.
Features of Raden technologies
Let's talk about aluminum radiators first. Their first and very important feature is the shape of the horizontal and vertical collectors - a wide ellipse. This form creates the least resistance to the flow of the coolant, therefore it passes a lot, and the heat transfer from the sections is good. At the same time, the collector itself experiences less stress, which contributes to an increase in reliability and service life.
The second feature is the wall thickness of vertical pipes: this manufacturer always has it more than 1.9 mm, which is comparable to the thickness of pipes for supplying a coolant. And this is another plus for durability and reliability.
They guarantee warmth and comfort for many years.
Radena bimetallic radiators are equally reliable. It is a complete bimetal, with thick-walled steel manifolds. Moreover, high-carbon steel is used, because of which the pH value can vary over a very wide range: pH from 6 to 10.5.
The third feature: two-stage painting. First, all sections are pre-processed. They are cleaned, then treated with degreasing compounds, preparing the surface for painting. Further, each section inside and outside is covered with a layer of paint (anaphoresis technology). It is corrosion protection
Please note that all surfaces are processed. Inside too
Finding a second campaign that paints the radiators inside will be very tricky. Then another layer is applied on the outside - epoxy powder paint. Spraying takes place in an electrostatic field, which ensures high durability of the coating.
All reviews are positive. It's just hard to believe
The painting is very reliable, does not fade over time and does not change color, does not exfoliate, there is no marriage - this is according to the words of the installers. The paint is uniform on all sides. The sections can be disassembled and assembled, while the appearance does not suffer, chips and mother-in-law are not formed.
Further "little things" that add pluses in favor of radiators:
- Intersection gaskets - graphite, self-centering. Therefore, during assembly / disassembly, the radiator is always even. Never flows.
- The thread is deep and even, not filled with paint.
- The ends are always already cleaned. I took it out of the package and can be collected.
- The spinning force is stable, above 50 Nm. Very reliable and high quality build.
- The radiators are packed in bubble wrap, the boxes are reinforced at the sides and corners, so damage during transportation is a rarity.
All these nuances seem insignificant, but they speak of high quality. And all the "little things" give a burst pressure for aluminum radiators - 52-55 atmospheres. The result is a stable clientele and no complaints.
The flow diagram of the coolant in bimetallic radiators with bottom connection
It looks a lot like a promotional article, but the quality is really high. The information given above is not on the official website (partly there is about painting, and that's not all). Apparently, they are trying to protect the subtleties from competitors. The data was taken from the reviews of the installers (on third-party resources).
Radena
If you want to buy Radena radiators, you are making the right choice, quite economically sound. Today radiators produced under the Radena brand by the Italian factory Galetti are recognized all over the world. High quality and Italian sophistication - Raden radiators will perfectly fit into any interior, allowing you to create a really warm and cozy atmosphere in any home.
Aluminum Radena radiators. This is a good option if you are looking for the best performance / cost ratio. Aluminum radiators have the highest heat dissipation, therefore, they provide economical heating. In addition, such radiators are beautiful and lightweight. Those radiators supplied to the Russian market are adapted to our operating conditions, in particular, to the system pressure standard for Russia.
The only drawback of aluminum radiators is their electromechanical corrosion, which occurs when there are antagonist metal ions in the system, in particular copper. Copper is a "stronger" metal, so it will attract aluminum ions to itself - until the aluminum turns into a thin foil. Therefore, there is an opinion that aluminum radiators cannot be installed in a system where there is an electric boiler with a copper heating element. But if the heating wiring is made of polypropylene or polyethylene pipes, nothing bad will happen to the radiators, since in this case the galvanic pair "aluminum-copper" breaks. Also, the prevention of electromechanical corrosion is the use of passage plugs - nickel-plated, cadmium-plated, chrome-plated.
Aluminum radiators are sensitive to the quality of the water in the system, so they should be installed in houses and apartments where it is possible to control the quality of the water.
Bimetallic Raden radiators. Radena bimetall - universal radiators. They combine all the advantages of steel and aluminum radiators. As statistics show, the most popular radiators are Radena bimetall cs 500. Parameters of one section (depth × width × height): 85 × 80 × 552 mm.
Radiators Radena bimetall cs 500, the price of which is quite affordable, especially when compared with the quality and characteristics of radiators, are really one of the most popular. These are universal radiators suitable for use in private houses, apartments, administrative and other buildings. School? Raden. Hospital? Raden. Government agency? Raden too. If you enter into the search engine "Radena bimetall cs 500 reviews", you can find only positive reviews. Indeed, Raden's bimetallic radiators collect only positive reviews - it is impossible in another way.
Radena bimetal is a radiator consisting of a steel frame and an aluminum case. A steel frame is in contact with the coolant - tubes made of thin but strong steel. Therefore, Radena 500 radiators, for example, or Radena 350, or other Radena models are not afraid of water contaminated with impurities, they withstand a sufficiently high pressure in the system, are resistant to water hammer and other "surprises" from the heating system. Over the years of operation, Raden bimetal radiators collect only positive reviews, regardless of the room in which they were installed.
As for the aluminum case, it increases heat dissipation. In addition, the special design of the housing improves convection by correctly distributing the flow of warm air.
Thus, if you want to buy radiators that are reliable, economical and efficient, you need Raden radiators, the price of which is more than justified.
Technical characteristics of sectional bimetallic radiators of different models
Bimetallic radiators "Radena", presented on sale as sectional products, are designated as CS 150, CS 350, and CS 500 / VC 500.All of them are capable of operating at a pressure of 25 atmospheres, the test pressure of all three models is 40 atmospheres, while the burst pressure is equivalent to 90 atmospheres. The temperature of the coolant also does not differ and is 110 ° C, the same cannot be said about the heat output of one section. In the first case, the parameter is 120, in the second - 135, while in the third - 185 watts.
Radena company at a glance
A variety of sectional type radiators are produced under the trademark in question. Product development is carried out in Italy, whose manufacturers follow European quality standards. The equipment sold directly on the domestic market takes into account the peculiarities of the local climate. Naturally, it has the necessary documents. Otherwise, no one would have allowed goods to be sold in retail outlets.
An example of a Radena radiator in a home interior.
Since Radena covers many market segments, the company's radiators are considered versatile models. If necessary, products can actually heat administrative or residential buildings. Industrial buildings and public buildings are also included in the area of product use.
When applying a protective coating to the surface of heating equipment, again the European requirements for environmental friendliness and safety are observed. Release of harmful substances into the environment is excluded as a fact. After manufacturing, the radiators are packed in a special foil and immersed in durable cardboard boxes. Thanks to this, they are not damaged on the way to customers, which cannot be said about a number of other similar products.
The outside of the packaging contains important information. It includes the model of the radiator, the scheme according to which it should be placed, and the main technical properties.
Be sure to pay attention to the listed data so as not to make a mistake. Each product unit has a technical passport
Radiator packaging and markings on it.
Radena bimetal batteries
As already mentioned, "Radena" is a complete bimetal. What does it mean? That both the vertical and horizontal collectors are made of steel. Why do they do it? The first reason is to exclude contact of aluminum with the coolant, which is very far from the norm in district heating networks. Aluminum is known to be a reactive metal, and at high pH levels it corrodes rapidly, leading to leaks. Therefore, manufacturers set requirements for hydrogen activity: so that there is a guarantee of long-term operation.
Brief data characterizing radiators made of and steel (bimetallic)
The second reason for using steel in radiators is to increase strength. Aluminum and its alloys are soft metal, and since the pressure drops in district heating networks can be very significant, not all aluminum batteries can tolerate them. Especially if, to save money, the walls of the collectors are made thin. And steel, even of small thickness, can withstand higher pressures than aluminum.
In radiators, steel collectors are connected to each other by welding: a vertical tube is welded from the outside in a circle into the collector. But steel has a small coefficient of thermal conductivity, therefore, aluminum is fused onto it, and air duct fins are created. The resulting bimetallic section has high strength, low reactivity, and good heat output.
Technical characteristics of bimetallic batteries "Radena"
Some firms produce radiators in which only a vertical tube is made of steel. They have a higher heat transfer than a full bimetal, but the coolant is still in contact with the coolant. They can not be used in all networks, but the advantages of this option include their lower cost. A full bimetal is much more expensive due to a complex technological process.
Radena produces only full bimetal and uses only high carbon steel.Therefore, the working pressure is 25 atm, the temperature of the medium is 100 o C and the warranty is 25 years. There is one ruler, three center distances: 150, 350 and 500 mm. The price of Radena CS 500 radiators, from trading companies, is about $ 14. And this is the price of a full bimetal. In the specification they are designated Radena CS 150, Radena CS 300, Radena CS - versions with side (standard) connection. There is a radiator with bottom connection, for example, Radena VS 500. Their technical characteristics are shown in the table.
Dimensions (edit)
When choosing such equipment, you should also count on the fact that each model has its own height. For these options, these parameters are 241, 403 and 552 mm, respectively. The distance between the axles is also different and is equal to 150, 350 and 500 mm for each model. When purchasing heating radiators "Radena", which are sold under the brands CS 150, CS 350, as well as CS 500 / VC 500, you must rely on a certain depth and width of the sections. For the first model, these dimensions are 120 x 74, while for the second and third models, these dimensions are 85 x 80 mm.
Aluminum heating equipment
Although many experts offer buyers to buy Raden, this is not a mandatory rule. Aluminum as a material of manufacture is quite good in terms of heat transfer and a number of other important characteristics. If the working environment permits, the application pays off. Some rules still need to be taken into account.
Radena aluminum radiators are used in systems based on water heating. Buildings - administrative, residential, public. Low-rise buildings are suitable.
Manufacturing process and cost
It's time to talk about more serious things. Let's start with a little help, which is that Raden's aluminum heating radiators are made from a number of sections. The latter are cast under high pressure. Then they are connected into a single whole. For this, steel nipples and special gaskets are used.
Radiator aluminum Radena 500.
Products are painted with epoxy polyester. A couple of layers are applied. If you are well versed in various technical subtleties, we add that two methods are used to create a protective coating. The first is cataphoresis. The second is electrostatic spraying. It is a powder enamel. At the very end, the product is covered with a paint compound that belongs to class A.
You need to know the following - both the manufacture and painting of Radena aluminum radiators are done at an acceptable level. There are two types of aluminum products to choose from - R350 and R500. The price of the R350 is from about $ 11.3 per section, R500 - $ 11.8.
Specifications
The basic properties of the R350 and R500 are not very different. We will consider the first option. If the R500 differs in something, we will explain it separately. Normal operation of the radiators is guaranteed at an operating pressure of the heat carrier of 16 atm. As for the test one, it is 24 atm. The burst pressure is 50 atm.
The heat output of one section is very high - 165 W. The R500 has a little more - 192 watts. In order for the heating equipment to serve for a long time, the temperature of the coolant should not exceed 110 degrees. Plus per liter of working fluid, more than 0.02 mg of oxygen is prohibited
Pay attention to pH. Valid value is 6.5 to 9
https://youtube.com/watch?v=WKGFsqCO1uY
One section of the product holds 0.275 liters (R500–0.330 liters). The weight also varies to some extent. R350 - 1.05 kg, R500 - 1.35 kg. Section heights are 431 mm and 581 mm respectively for different models. The center distance is 350 mm and 500 mm (hence the indexes in the name). The remaining indicators are the same again. For example, the depth of the radiator section is 85 mm. Width - 80 mm. The inlets for connection have a diameter of 1 inch. White color.
We believe that the information provided is more than enough to superficially evaluate aluminum products. Let's move on to a more interesting option.We are talking about bimetallic heating radiators Radena, which are even more versatile.
Aluminum radiators "Radena"
The assortment, unfortunately, is not wide. There are only two modifications: with a center distance of 350 and 500 mm. Radena R 350 and Radena R 500 are designated respectively. The cost of one section of aluminum radiators is around $ 11-12. Technical parameters are shown in the table (see below).
They are available only with side connection. For stable operation, it is recommended to install a manual ("Mayevsky" valve) or an automatic air vent. If there are impurities in the coolant, the installation of filters and mud collectors is desirable.
Brief data characterizing aluminum radiators
Where is the best place for aluminum radiators? The best option is individual heating. Here you can adjust both the pH and the pressure yourself. We looked at which environment was optimal and selected the appropriate composition.
You can put it in apartments, but there are a lot of difficulties. According to the rules, any replacement in the heating system must be agreed. The thing is that when replacing radiators, even on one floor, the characteristics of the entire riser change. And it may well be that after replacing the radiator, it will not get warmer, but colder: the system will be unbalanced. In addition, you will need to clarify what pressure and what pH level in your system is considered normal. The maximum temperature of the coolant will also be needed. You can get these data from the housing department, DEZ or other similar organization. Then you can decide whether aluminum radiators are suitable for your apartment, you need bimetallic ones, or maybe only cast-iron ones can live normally with a coolant in your network.
Technical characteristics of Radena aluminum radiators
Radena aluminum radiators feel good at a pH not higher than 9 (and preferably 7-8), operating pressure 16 atm, withstand up to 50 atm. Taking into account the fact that about 9 atm is considered normal, the reserve should be enough even for emergency situations. But if there are serious drops (talk to plumbers - they may know to what extent the drops can be), then it might be better to put bimetallic ones.
