How to choose a bimetallic radiators - the selection criteria and the calculation of the required number of

By Admin | Heating And Heaters
15 April 2016

Many of those who live in high-rise buildings, with interest looked at modern bimetallic radiators.Painfully feel like messing around with the heavy cast-iron batteries, and light and beautiful aluminum are not suitable for an apartment - can not withstand the pressure.But the apartments are perfect for durable and stylish bimetallic radiators - how to choose them, we'll tell you.

Criteria for selection of bimetallic radiators


  1. design bimetallic heaters
  2. Which is better: a model of several sections or whole?
  3. What radiators reliable and durable
  4. Which manufacturer to stop a choice
  5. We select the distance between the axles
  6. on the exterior of bimetallic radiators
  7. How much heat gives the radiator
  8. Operating pressure - an important characteristic
  9. How to choose how many sections of the radiator must be
  10. Video: Tips on replacing bimetallic radiators

design bimetallic heaters

housing these figurative

ly-finned radiators made of aluminum alloy, which features a great heat loss.Under the housing is heating circuit, made of pipes (copper or steel).

Filling bimetallic radiators
This "filling" makes battery adequately resist the attack of chemical and mechanical impurities present in the hot water for heating.

steel, which consists of the core tube, very strong.Therefore, the radiator will sustain, even at high pressure.It may be 20 or even 40 atmospheres (some models up to 100 atmospheres).And the temperature at the heat medium can be raised up to 110 or 130 degrees.If you need more specific figures, it is necessary to look into the passport of a particular sink.Aluminium is not only increases the heat output, but also greatly facilitates device.In addition, the complex shape of the hull has a very nice design, giving an excellent view of the radiators.

The characteristics of these radiators are quite suitable for apartments in buildings of varying heights, and for individual houses with autonomous heating systems.But do not rush immediately to shop - first we'll show you how sensible approach to the issue of their choice.

Which is better: a model of several sections or whole?

bulk bimetallic radiators consists of sections.Their is usually an even number.These elements made in the factory, are combined into one common heat sink.The joints between all sections are sealing gaskets fixed nipples.

Untwisting radiator sections
This option is convenient because you can always add on or subtract the required number of sections - experienced master easily handle it.

monolithic design is good to be able to cope with the enormous pressure - up to 100 atmospheres.After all, it is within the monolithic core of steel, the strength of which is higher than the sectioned.Top steel tubes covered with aluminum cladding.Although less than the previous model, but there are shops and such models.


When selecting then you need to look in the direction of a working pressure you need, if your network contains a powerful centralized hammering, choose monolithic devices.But they are more expensive, so in all other cases, it will stop at the breakout.What

radiators reliable and durable

Batteries bimetal may be slightly different materials used.Thus, there are two types of radiators.

  • first made entirely on the basis of a skeleton of steel.
  • The latter have only reinforced with steel channels through which hot coolant flows.

Radiators the steel frame of a high quality and reliable.After all, they have hot water is not in contact with the aluminum alloy so severe corrosion was observed.Flowing like the product will not be sure.Thus, selecting a particular model, despite its cost and weight.The heavier the battery, the more expensive it is.Radiators made on a steel frame produced such brands as:

  • Italian company Global Style;
  • Italian company Royal Thermo BiLiner;
  • Russian company Santechprom BM.
  • Russian company Rifar - model Monolit

the radiator, where the frame is not completely steel (which, incidentally, is called polubimetallicheskimi) higher heat loss.And where the value for a one-fifth less than the steel frame of the radiator.The top three popular manufacturers can also list:

  • Russian company Rifar (except model Monolit);
  • Italian company Sira;
  • Chinese company Gordi.

If you need a cooler for an apartment high-rise building with a centralized heating system and old pipes, then your choice is a true bimetallic radiator made based on a steel frame.

Which manufacturer to stop a choice

If you are in thought, bimetal radiator which company to choose, we will try to orient you in this variety.To say that some well-known company for the production of radiators drives a marriage, you can not.It is usually sold as certified products, and is therefore defective product should not be in principle.However, there are some differences from the cheap radiators more expensive.For example:

  • for their production takes a little less steel and aluminum.
  • they are less complicated in design.
  • Painting made on a budget option.

As you can see, it is not as critical parameters.So very bad battery, standing about 400 rubles for each section can not be called.They just are not as beautiful, and the pressure can not be compared with more expensive models.However, his work they will perform.

But some of them may be polubimetallicheskimi, they sharply differ in price, it is possible to understand at once looking price lists and catalogs.On the firms that produce them, we said above.

We are most often found in Sales radiators firms Rifar, Sira and Global.One section of the domestic (rifarovskih) radiator is from 350 to 400 rubles.In the Italian section of the batteries will be more expensive - from 420 to 500 rubles apiece.Specifically - to go to the store and look certain models.For manufacturing companies produce sections with different heat output, design and construction.Therefore, we can always choose radiator, focusing on the amount available in your wallet.

Table: Comparative characteristics of different manufacturers and models of bimetallic radiators

Brand country Manuf. Model th Dist between axes, mm Dimensions H / W / D (section) Maxim.Operating pressure bar. Thermal power V volume of water in the section,
Weight Max.temp.tepono-extension kit

STYLE 350STYLE 500STYLE PLUS 350STYLE PLUS 500 350 500 350 500 425/80/80575/80/80425/80/95575/80/95 35 125168140185 0,160,20,170,19 1,561,971,51,94 110

BiLiner Inox 500BiLiner 500 500 574/80/87 20 171 0,2 2,01 90

TENRAD 350TENRAD 500 350500 400/80/77550/80/77 24 120161 0,150,22 1,221,44 120


RIFAR Forza 350RIFAR Forza 500RIFAR MONOLIT 350RIFAR MONOLIT 500 350 500 350 500 415/90/80570/100/80415/100/80577/100/80 2020100100 136202136194 0,180,200,180,20 1,361,841,52,0 135

Gordi 350Gordi 500 350500 412/80/80572/80/80 30 160181 0,210,3 1,41,7 110

Gladiator 200Gladiator 350Gladiator 500 200 350 500 275/80/80423/80/80 30 90140185 0,10,130,42 0,650,851,6 110

We select the distance between the axles

functionally different models of bimetal radiators are usually equivalent.But the distance between the axes of the collectors they differ.


models are available with standard of its values ​​(50 and 35 centimeters) and nonstandard.For example, if your goals are suitable for radiators minimum or maximum height, keep in mind the following points:

  • small distance between the axles (20 centimeters) is only the models of firms BiLUX, RIFAR and Sira.
  • large distance between the axles (80 centimeters) is only the models made by the Italian firm Sira.

can point out some advantages of our products manufacturer - RIFAR.He makes a line of radiators RIFAR MONOLIT, in which the core is solid.Another line - RIFAR FLEX - may be rounded off in accordance with the wishes of the customer.

Rifar Flex
This is useful in the apartment where the angles are not straight and rounded.Such radiator and design will flow optimally, and layout is perfect.

on the exterior of bimetallic radiators

Well, there's only one may ask yourself, how to choose a bimetal radiators.Everyone is free to choose according to taste, as well as registration of the apartment.On the colors we can say this: white battery can be found in such manufacturers as RIFAR and Sira.If the bright white color seems too cutting eyes and lovelier shade of warm milk, then buy a radiator company Global.

How much heat radiator gives

Section bimetallic model gives heat at about cast-iron section.This is where some 150-180 watts.Detail - in particular the passport model.Of course, better to take such a device, which has more than this figure.

Operating pressure - an important characteristic

In the central heating pressure often "play tricks".It happens, and hammering happen.That is something they must confront the battery.We products from bimetal press statement - from 20 to 35 atmospheres.This is enough even for the apartments, not to mention private homes.But of course if you need to withstand high pressure radiator, then select solid models that can withstand pressures up to 100 atmospheres.

How to choose how many sections of the radiator must be

Power can range from 160 watts to 2.4 kilowatts.Depending on what area of ​​the heated room is selected and a radiator of a certain power.You do not know how to choose, how many sections need bimetallic radiators?You can go two ways.The first - to entrust it to competent people.They get you on the nose all count.For any room - even in high-rise apartment, even in your own cottage with central heating.

not want to trust anyone calculations - please.You can also most.Will, of course, not so perfect for sure, but it is not critical.But the method of calculation is quite simple.For him, it is necessary to know some guideline values.This heating power (in watts) that is needed to heat one square meter of the room where the radiator will be placed.Consider three ways.

  • one window in the room and one wall facing the street.The ceilings of 250 to 270 centimeters tall.Power to heat one square meter you need 100 watts.
  • one window in the room and the two walls facing the street.Ceilings are the same.The power required to heat one square meter - 120 watts.
  • in the room with two windows and two walls facing the street.Ceilings new standard.Outside the regulatory power - 130 watts.


1. Power rating multiplied with the area - this will be the thermal capacity of the entire battery, which is needed for a particular room.In the case of homes with high ceilings and a large window area is further multiplied by 1.1.This factor correction.

2. Take passport radiator and discharged from a thermal power of one section.If your passport does not have this value, we find on the of the manufacturer.Divide the number in the first paragraph on this parameter, we obtain the number of sections.The task is solved.Oh, and one more thing: If the radiator is available only with an even number of sections, and you get an odd number, you will have to round it off, while increasing.

But when it comes to sectional radiators, some sellers take off or add the required number of units and sell as much as you need.

Calculation example:

We want to put a bimetallic battery Sira RS500 in a room in which there is only one window.The wall facing the street, is also one.But the high ceilings, three-meter.Area is 19 square meters.Start the calculation.

consider the overall thermal capacity, we need to heat the room.To do this, multiply the square (19 square meters) on the specification (100 watts) and a correction factor of 1.1 (it was used as ceiling height than the standard values).

100 x 19 x 1.1 = 2090 (W).

looked into the passport of the radiator, it turns out that one section has its thermal power equal to 199 watts.

2090/199 = 10.5 (pieces).

This desired number of sections.Naturally, you need to round up to the nearest whole number.Since the parameters closest ten sectional model, it makes sense to put it.So, we will need 10 sections.As you can see, the calculations do not represent special complexity.

Video: Tips for replacement of bimetallic radiators

  • reviews the use of bimetallic radiators
  • reviews heating radiators of various kinds and brands

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