Review of the best Drazice water heaters of 2022

For every homeowner, there is a unique opportunity to get rid of the sudden shutdown of hot water once and for all and install an excellent Dracize boiler. Most of these indirectly heated tanks have sufficient volume to meet all the needs of the family. This review will describe all the necessary information about the best models of boilers of the Czech company.

Brief information

The Drazice company began its existence at the beginning of the twentieth century, and the production of heating tanks - about 60 years ago. Each product of the Czech company is well known to many customers and is distributed almost all over the globe. Boilers "Dražice" regularly take first place in the nomination of the best heating tanks.

In terms of their structure, Dracize heating tanks represent a worthy alternative to flow-through boilers, which have occupied a leading position in the vast Russian market for too long. Moreover, combined and indirect heaters can provide the highest efficiency and the lowest level of energy consumption.

Feature and uniqueness of boiler technology

The heating tanks of the Czech manufacturer, first of all, are distinguished by unique energy-saving technologies, the best materials in the composition and strict quality control. Of course, this is not all that the Dracize boiler boasts. Fuel cell system, this is what distinguishes Czech heaters. The bottom line is that, unlike conventional flow tanks with spiral heaters immersed in water, special dry ceramic tubes are installed in Dražice heaters. Also very important is the coating that envelops the heating elements, they consist of the same metal as the tank itself.

A feature of this solution is the complete protection of the boiler against corrosion, this is facilitated by the absence of a galvanic reaction due to the identity of the alloy of the body and tubes.

The ceramic coating of the tubes is very resistant to hard water, which is why the heaters of the Czech manufacturer have a long service life.Reducing operating costs can be reduced by regularly cleaning the tubes from various kinds of deposits. The presence of a magnesium anode helps to extend the life of the tank itself - it also provides protection against rust.

The next advantage of these tanks are the installed service holes on the body - they are necessary for free access to the inside of the tank. It is worth noting that absolutely all Drazice products are developed and manufactured in the Czech Republic.

Dražice heater options

Heaters of the Czech manufacturer have the following design features:

• The ability to select and control the heating temperature from 5 to 80 degrees;
• The presence of special protection of the tank from overheating or hypothermia;
• Ability to minimize heat loss.

Dracize manufactures two types of boilers:

1. Heaters with indirect heating, designed up to 1000 liters;
2. Heaters with combined heating, designed up to 200 liters.

The main question remains - what is the difference between them, and which option is better?

In any case, both options are storage devices, in the interior of which water circulates, heated by a special boiler or an alternative heat source. In order to connect the device to the boiler, it is worth using the appropriate pipeline, and, in the meantime, the circulation of the liquid will be provided by special pumps and mixers.

The most important difference between a combined heater and an indirect heater is the presence of an electric heating element. But, nevertheless, in both versions there is a tubular heat exchanger.

Thanks to the heating element, the unit is able to heat the liquid even when the heating system is turned off, that is, autonomously.

Upgraded Combined System

Recently, a Czech company has developed a new version of the combined heater. Models are now available that can function and heat liquid with gas. Such carriers differ in that the liquid is located in the inner tank, and the coolant is located in the outer tank. Naturally the units are equipped with gas burning systems.

The advantages of such options include the ability to use various energy sources, and the disadvantages are too high cost.

In the case of purchasing these models, it is worth considering the fact that budget options have a too weak metal layer on the outer surface of the tank. This is dangerous by the formation of some cracks after a certain time. In order to avoid the annual replacement of the anodes, it is better to buy more expensive models of combined gas heaters.

Installation method

The standard connection option takes into account the following steps:

1. Suspended apparatus must be mounted on anchors or brackets;
2. Models that are designed for floors must be placed exclusively on a flat surface;
3. To ensure rapid heating, it is worth installing the device above the level of the boiler itself;
4. The return and inlet pipes must be placed on a straight line towards the boiler;
5. If necessary, a hydraulic arrow or manifold can be installed.

There are several connection schemes:

• Through a three-way valve;
• Through an additional pump designed for fluid circulation.

Convenience in dismantling the structure can be ensured by the installation of valves at both ends of the pipes. Of course, it is best to place them very close to the body - this will save heat. The safety valve, in turn, must be installed at the outlet end of the cold water pipe.

Operation of indirect heaters

An indirect type device is just right for a user who is tired of paying large, wasteful bills for excessive electricity consumption. Water is heated by contact with a heat carrier. This type of heaters are great for connecting water lines in high-rise buildings and private houses, as well as gas boilers and batteries that are charged from the sun. How does this system work?

A coil or a spiral is installed in the inside of the tank. Next comes the coolant. Further, in turn, the pump begins to circulate the coolant. After that, the inside of the tank is filled with liquid from a pipe with cold water, and the heat carrier begins to heat it to the required temperature. It should be borne in mind that by connecting the heater, the heating efficiency will not decrease.

Having completed the working circle, the coolant must return to the system again. It is very convenient that in the summer it is possible to integrate an electric heating element into an indirect heater system.

• Profitability - there is no particular need for auxiliary energy sources;
• Benefit - the family can receive constant heating of a liquid with a volume of 20-200 liters;
• Practicality - absolutely any heat source can be used;
• Security - there is a protective system against short circuits and overheating;
• Comfort - the presence of providing several points of water pressure at once;
• Maintaining the temperature - in the case of using liquid from under the boiler in the bathroom, hot or cold water can go into the kitchen. This happens with conventional flow boilers, but not with indirect ones.Thanks to this function, the water in the tank will be maintained at a stable temperature.

• Overpriced device;
• Heating water takes a long time - for faster heating, it is worth installing a heating element;
• For further efficient operation of the system, the heating tank must be placed as close as possible to the heat carrier.

Boiler options

The heating tank can be selected based on the following criteria:

• The volume of the internal tank - in this case, a lot depends on the number of people and the goals set;
• The design of the heat exchanger - there are several types of heat exchangers, namely a coil or a spiral;
• Tank in a tank - the existing tanks are combined, one of them is filled with coolant, and the other is filled with liquid;
• Tank material - available in stainless steel and titanium;
• Pressure level - this is mainly indicated in the relevant documentation. The value ranges from 5 to 12 bar. This characteristic plays a very important role in multi-storey buildings. The problem is frequent power surges in the house pipeline. Subsequently, various kinds of contamination occur in the safety valves. Installing a reducer to the place where water enters will help prevent this problem.
• The presence of a heating element - in the event that the heating is turned off at any moment, the situation can be corrected by special heating elements operating on electricity or gas.

Operation of combined heaters

In addition to the main tank with a coil, the heater is equipped with an auxiliary heating element. The liquid in such can be heated in several ways.The first method is the simplest and consists of conventional heating with a heating system, and the second - thanks to an electric heating element. This system is inherent in saving electricity during the heating season, and in the warm season it is possible to use heaters with the help of a heating element.

There are several types of combined heaters depending on the installation method:

1. Boilers for walls - they are divided into vertical and horizontal;
2. Boilers for floors - they are characterized by huge sizes;

• Minimum heat consumption due to the heat-insulating, polyurethane foam layer;
• Constantly maintained liquid temperature;
• Special tank surface that repels harmful microbes;
• The presence of a thermostat to maintain the selected water temperature;
• Duration of operation;
• Very fast liquid heating;
• Functioning in the warm season.

• An auxiliary circulation pump is required;
• Complete dependence on the operation of the boiler;
• Before buying, you need to clarify the functioning of all systems.

So, now directly about the best models of the Czech company.

Overview of the best Dracize water heaters

Dracize OKS NTR/Z

This model is a budget option - the approximate cost is 24-26 thousand rubles. The boiler is characterized by indirect heating without electrical elements. It is a vertical heater. There is a temperature controller, as well as the ability to connect a circulation pump and a three-way valve.

Water can be heated within 40 minutes. The tank is enameled from the inside, a magnesium anode is installed in the system, which will eliminate corrosion. A thermal insulation layer protects the tank from temperature loss.There are five models in the assortment, which differ in tank volume (80-200 liters).

• Low cost;
• It is possible to connect a pump and a three-way valve;
• Thick layer of enamel - 3 mm.

• Long heating time - over 40 minutes;
• Small tank capacity.

Dracize OKCV NTR

Another budget option, the cost of which is 30 thousand rubles. The heater has a horizontal shape, a rounded body, by type - hinged for walls. It has an indirect type of heating. It also has the option of installing an electric heating element.

The liquid can warm up within half an hour. The level of heat loss is one and a half kilowatts per hour. The system has a magnesium anode. The boiler is not susceptible to corrosion or galvanic effect. The housing has a built-in service hole, thermostat and thermometer. The volume of models ranges from 100 to 200 liters.

• An electric heater can be installed;
• Low cost;
• The presence of a service hatch;
• Fast heating speed - 30 minutes.

• Small tank capacity.

Dracize OKC NTR

There are several models with different markings available. In fact, they indicate the number of liters in stock (100-250 liters). The features of the heater include the presence of a redundant connection to various heat sources.

By type of installation, it is floor-standing. The inside of the tank is covered with an enamel layer. A magnesium anode is installed in the system, and the thermal insulation layer is 40 millimeters. The liquid heating time is half an hour. The cost of the heater varies from 25 to 50 thousand rubles.

• The possibility of heating the liquid from different heat sources;
• Rapid heating of water - 30 minutes;
• Easy installation of the boiler;
• Relatively low cost.

• Small tank capacity.

Dracize OKC NTR BP and NTRR BP

The abbreviation means the number of connected thermal media. This series is considered the newest, and its cost is 35 thousand rubles and more. The volume of the tank is designed for three hundred liters, and the type of installation is outdoor. According to the location of the body, the heater is vertical. The inner tank is covered with enamel. At the bottom of the heater there is a service compartment. There is a special connector for connecting the system to a solar battery.

• Possibility of connection to the solar battery;
• Low cost;
• Large tank volume - 300 liters;
• The presence of a service hatch;
• Easy heater installation.

• Long heating time - over 40 minutes.

Dracize OKCE NTR

According to its scheme, this is a combined device of a budget class, which costs from 30 to 70 thousand rubles. The volume of the tank is 300 liters. The boiler is provided with very fast heating of water - 25 minutes, while the liquid reaches 50-70 degrees. The heater is provided with autonomous operation, and the reason for this is the built-in heating element. The unit can work with or without a boiler. The power of the heating element is 2.2 kW. The body is equipped with polyurethane foam insulation.

There is a temperature sensor on the frame. The working process of the valve is carried out by a thermostat. When the water cools, the valve opens and the coolant enters there. The inside of the tank is covered with enamel. There is also a magnesium anode that resists rust. It is possible to clean sediments through the side service hatch. The electric heater is covered with a metal sheath, so its breakdown is unlikely.

• The presence of a service hatch;
• High water heating rate;
• The possibility of heating the liquid with different heat sources;
• Large tank volume;
• High quality thermal insulation.

• High price.

Dracize OKC/1

This boiler is considered a standard class, and its cost starts from 59 thousand rubles. The calculation of the tank capacity is made for a fairly large family. The heating of the liquid occurs in half an hour, and it warms up to 60 degrees. The frame of the heater has a cylindrical shape, it is mounted on the wall. Heating of water happens due to receipt of heat from the heating battery.

The power of the heating element is 19 kW. Good thermal insulation prevents the liquid from cooling down. Autonomous operation of the tank is provided by a ceramic heater, which has 2 kW. The element itself is covered with a metal sleeve, which prevents contact with the liquid. It only takes a couple of minutes to replace the heating element. In the workflow, you can use several heating elements at once, because of this, heating will be much faster.

• Rapid heating of the liquid;
• Easy replacement of the heating element, using a special hole;
• The presence of several heating elements;
• The heating element is covered with ceramics and shrouded in a metal sleeve.

• High price

Data reduction

Name	Displacement	Price	Power	Heating time
Dracize OKS NTR/Z	80-200 liters	24-26 thousand rubles	2 kW	40 minutes
Dracize OKCV NTR	100-200 liters	30 thousand rubles	2.5 kW	30-40 minutes
Dracize OKC NTR	100-250 liters	25-50 thousand rubles	2.5 kW	40 minutes
Dracize OKC NTR BP and NTRR BP	300 liters	35 thousand rubles	3 kW	30 minutes
Dracize OKCE NTR	300 liters	30-70 thousand rubles	2.2 kW	25 minutes
Dracize OKC/1	250-300 liters	60 thousand rubles	2 kW	30 minutes

Conclusion

The Czech manufacturer produces truly high-quality heating tanks. This is evidenced by a long service life, almost every model is economical and fast in heating, and the inner and outer coating of the shell is treated with a polyurethane foam heat-resistant layer.

Drazice offers the buyer several options for heaters, which are divided into combined and indirect. For the average user on a low budget, of course, an indirect type boiler would be the best option, as it is more economical and practical. The resources spent on the operation of such units are spent to a minimum, and the effect is worthy. Combined heaters are considered more powerful and more expensive, and because of this they are not suitable for every buyer. They are very easy to use and are able to heat with several elements, which further creates additional comfort.