Review of the best Drazice water heaters of 2024

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 boiler from the manufacturer Dracize. Most of these indirect heating tanks are large enough to meet all the family's needs. This review will describe all the necessary information about the best models of boilers of the Czech company.

Brief information

The company "Drazice" 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 buyers and is distributed almost all over the world. Boilers "Drazice" regularly take first place in the nomination for the best heating tanks.

By their structure, Dracize heating tanks represent a worthy alternative to flow-through boilers, which have occupied the leading positions in the vast Russian market for too long. Moreover, combined and indirect heaters can provide the highest efficiency and minimum 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 can boast of. The fuel cell system, this is what makes Czech heaters different. The bottom line is that, unlike conventional flow tanks, with spiral heaters immersed in water, special dry ceramic tubes are installed in Drazhice 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 from corrosion, this is facilitated by the absence of a galvanic reaction due to the identity of the alloy of the body and pipes.

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 reduce the regular cleaning of tubes from various types of sediment. The long life of the tank itself is facilitated by the presence of a magnesium anode - it also provides protection against rust.

Another advantage of these tanks is the installed service holes on the body - they are necessary for free access to the inside of the tank. It should be noted that absolutely all Dražice products are developed and manufactured in the Czech Republic.

Drazice heater options

The heaters of the Czech manufacturer have the following design features:

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

Dracize manufactures two types of boilers:

1. Indirectly heated heaters up to 1000 liters;
2. Combined heaters 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, special pumps and mixers will provide the circulation of the liquid.

The most important difference between a combined 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 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 are distinguished by the fact that the liquid is located in the inner tank, and the coolant is in the external 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 a cost.

In the case of purchasing these models, it is worth considering the fact that budget options have too weak a metal layer on the outer surface of the tank. It is dangerous to form 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 the following steps into account:

1. Hanging devices must be fixed on anchors or brackets;
2. Models that are intended for floors must be placed exclusively on a flat surface;
3. To ensure fast 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 switch or manifold can be installed.

There are several connection schemes:

• By means of 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 case - this will save heat. The safety valve, in turn, must be installed at the outlet end of the cold water pipe.

Functioning of indirect heaters

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

A coil or a spiral is installed in the inner part of the tank. Next comes the coolant inside. Further, in turn, the pump begins to circulate the coolant.After that, the inner part 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 a working circle, the heat carrier must return to the system again. It is very convenient that in summer it is possible to integrate an electric heating element into the indirect heater system.

• Efficiency - there is no special 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 suitable;
• Safety - there is a protective system against short circuits and overheating;
• Comfort - the presence of providing several water points at once;
• Maintaining the temperature - in the case of using liquid from under the boiler in the bathroom, hot or cold water can flow into the kitchen. This happens with conventional flow-through boilers, but not indirectly. 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 the 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;
• Heat exchanger design - there are several types of heat exchangers, namely coil or spiral;
• Tank in tank - the existing tanks are combined, one of them is filled with a 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 lies in the frequent surges of energy in the house pipeline. Subsequently, various types of contamination occur in the safety valves. Installing a reducer to the water intake point will help prevent this problem.
• The presence of heating elements - in the event of a heating shutdown at any minute, the situation can be corrected by special heating elements that run on electricity or gas.

Combination heater operation

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 in conventional heating using a heating system, and the second - thanks to an electric heating element. This system is characterized by energy savings during the heating season, and in the warm season, heaters with the help of heating elements are possible.

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

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

• Minimal heat consumption due to the heat-insulating polyurethane foam layer;
• Constantly maintained fluid temperature;
• A special surface of the tank that repels harmful microbes;
• The presence of a thermostat to maintain the selected water temperature;
• Duration of operation;
• Very fast heating of the liquid;
• Functioning during 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.

Review of the best Dracize water heaters

Dracize OKS NTR / Z

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

The water can be heated for 40 minutes. The tank is covered with enamel from the inside, a magnesium anode is installed in the system, which eliminates corrosion. A layer of thermal insulation 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 enamel layer - 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, hinged for walls. Has an indirect type of heating. It also has the ability to install an electric heating element.

The liquid can warm up for half an hour. The heat loss level is one and a half kilowatts per hour. The system has a magnesium anode. The boiler is not susceptible to corrosion or galvanic effects. A service opening, thermostat and thermometer are integrated in the housing. The volume of the models ranges from 100 to 200 liters.

• An electric heater can be installed;
• Low cost;
• Service hatch;
• Fast heating rate - 30 minutes.

• Small tank capacity.

Dracize OKC NTR

There are several models available with different markings. Basically, they represent 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 the 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 heating time of the liquid is half an hour. The cost of the heater varies from 25 to 50 thousand rubles.

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

• Small tank capacity.

Dracize OKC NTR BP and NTRR BP

The abbreviation stands for 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 floor-standing. The heater is vertical according to the housing location. The inner tank is enamelled. There is a service compartment at the bottom of the heater. There is a special connector for connecting the system to a solar battery.

• The ability to connect to a solar battery;
• Low cost;
• Large tank volume - 300 liters;
• Service hatch;
• Easy installation of the heater.

• Long heating time - over 40 minutes.

Dracize OKCE NTR

According to its scheme, this is a combined budget class device that costs from 30 to 70 thousand rubles. The tank volume 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 be operated with or without a boiler. The power of the heating element is 2.2 kW. The body is equipped with polyurethane foam insulation.

A sensor for measuring temperature is located on the frame. The valve is operated by a thermostat. When the water cools down, 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 rusting. The sediment can be cleaned through the side service hatch. The electric heating element is covered with a metal shell, so it is unlikely to break.

• Service hatch;
• High speed of water heating;
• Possibility of heating the liquid with different heat sources;
• Large tank volume;
• High quality thermal insulation layer.

• 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 rather large family. The liquid is heated in half an hour, and it heats up to 60 degrees. The heater frame has a cylindrical shape, it is mounted on the wall. The water is heated due to the incoming heat from the heating battery.

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

• Fast 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 wrapped in a metal sleeve.

• High price

Reduction of technical characteristics

Name	Displacement	The cost	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

Output

The Czech manufacturer produces truly high quality heating tanks. This is evidenced by the long service life, almost every model is economical and fast in heating, and the inner and outer shells are 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, the indirect type boiler will 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. Combination heaters are considered more powerful and more expensive, and because of this, they are not suitable for every customer. They are very convenient to work with and are capable of heating with several elements, which further creates additional comfort.