Indirect heating storage water heater 200 liters: review of wall-mounted and floor-standing models

Created: 09/14/2018
Updated: 02/19/2021 18:45:31 Share:
Author of the article: Konstantin Borisovich Polyakov

*Review of the best according to the editors of expertology.ru. About the selection criteria. This material is subjective in nature, does not constitute advertising and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required.

Among the wide variety of water heaters, buyers show particular interest in indirect heating boilers. Externally, these models do not differ from conventional storage devices. Most often, manufacturers settle on a rectangular or cylindrical body shape. Indirect boilers have their pros and cons. Experts recommend paying attention to several technical parameters.

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The best floor-mounted storage water heaters per liter

Thermex Champion Floor ER 200V

An electric water heater is a storage type device . The device is equipped with high-quality

thermal insulation made from environmentally friendly materials for better heat conservation.

Inside the container there is a special bioglass porcelain coating that prevents water pollution.

The body of the device is equipped with a thermometer that allows you to monitor the temperature of the liquid inside the tank.

Corrosion protection is carried out using a magnesium anode. built-in overheating protection will extend the period of safe use of the water heater.

Characteristics:

• power: 6 kW;
• power supply 220V/380V;
• shape: round;
• pressure;
• control: mechanical;
• max water heating temperature: + 70 degrees;
• material of the internal coating of the tank: glass ceramics;
• water supply: bottom;
• weight: 56.7 kg;
• dimensions: 56*121.6*67.2cm.

Advantages:

• easy installation;
• simple and intuitive controls;
• three-stage heating;

Flaws:

• dim operation indication.

Timberk SWH RS5 200 V

A semi-industrial storage water heater has a number of advantages . Installation is carried out on the floor surface.

The high level of wear resistance of the case is guaranteed by a specialized high-quality coating.

Durable and practical stainless steel, up to 1.8 millimeters thick, is used to produce the inner container..

The heating element is made of stainless steel and has a protective coating that prevents it from rusting.

High-quality thermal insulation will effectively maintain the temperature of the coolant and is made of dense synthetic foam.

High safety of use is ensured by the presence of a pressure and temperature check valve.

The convenience of maintenance and repair of equipment is supported by the separate location of the temperature limiter and thermostat.

Characteristics:

• power: 6 kW;
• power supply: 380 V;
• shape: round;
• pressure;
• control: mechanical;
• max water heating temperature: +75 degrees;
• material of the internal coating of the tank: stainless steel;
• water supply: from above;
• weight: 53kg;
• dimensions: 52*156*52cm.

Advantages:

• large volume;
• liquid heating rate;
• democratic price.

Drazice OKC 200 NTRR

The indirect heating boiler features a built-in double heat exchanger, which allows you to get twice as much water heated to the desired temperature per unit of time.

The device is durable and reliable. The outer case is made of metal and reliably protects the internal parts of the device from possible deformations and mechanical damage.

The heat exchanger outlets are located on the sides of the water heater, facilitating repair and maintenance processes.

The degree of heating of the coolant can be controlled using the built-in temperature indicator.

The kit includes a safety valve that will prevent overheating of water and surges in water pressure, thus extending the service life of the water heater.

Characteristics:

• flow-storage;
• heating power: 32kW;
• power supply: 230V;
• shape: round;
• indirect heating;
• control: mechanical;
• max water heating temperature: + 80 degrees;
• material of the internal coating of the tank: enameled steel;
• water supply: side;
• weight: 108kg;
• dimensions: 52.4*140*52.4cm.

Advantages:

• vertical installation method;
• high-speed heating of large volumes of water;
• convenient installation and maintenance.

Flaws:

• The use of a water heater is only possible if there is a heating boiler.

Buderus Logalux SU200

The boiler is intended for indirect heating . This is a high-quality storage tank for producing a significant volume of heated water.

Thermal insulation made of polyurethane foam ensures that the water temperature inside the boiler is maintained . The magnesium anode reliably protects the tank from corrosion.

The device is equipped with adjustable legs for stability on imperfectly level surfaces.

Characteristics:

• flow-storage;
• heating power: 3.5 kW;
• power supply: 230V;
• shape: round;
• indirect heating;
• control: mechanical;
• max water heating temperature: + 80 degrees;
• material of the internal coating of the tank: enameled steel;
• water supply: side;
• weight: 108kg;
• dimensions: 52.4*140*52.4cm.

Advantages:

• high-quality heating without interruptions;
• long-term temperature retention;
• adjustable legs.

Thermex Combi ER 200V

The combined type water heater is equipped with a built-in heat exchanger . This solution is perfect

to meet the needs of a private cottage, mini-hotel, small production.

Depending on the situation and season, the device can heat water either using electricity or using the coolant of the heating system.

The internal storage tank and heat exchanger are made of high quality steel with a bioglass-porcelain coating that is resistant to water hammer and temperature fluctuations.

The container is reliably protected from corrosion using anodizing technology.

The built-in recirculation system maintains a constant fluid temperature.

Characteristics:

• flow-storage;
• power: 3.2 kW;
• power supply: 230V;
• shape: round;
• indirect heating;
• control: mechanical;
• max water heating temperature: + 75 degrees;
• material of the internal coating of the tank: bioglass porcelain;
• water supply: side;
• weight: 74kg;
• dimensions: 54*145.3*63.7cm.

Advantages:

• The tank heating time is only 3 hours;
• the liquid does not cool down for a long time;
• The combination of an electric heating element and a built-in heat exchanger saves energy.

The best boilers up to 100 l

No. 3. Baxi Premier plus 100

This Italian model is a high-quality assembled boiler, the heat accumulator of which is made of stainless steel. It has a built-in thermostat, space for installing a tubular electric heater and a spare coil.

Let's look at its technical characteristics:

• power – 3000 W;
• volume – 100 l;
• pressure (inlet) – 7 atm.;
• Max. water temperature – +65 °C;
• time for heating water to +45 °C is 10 minutes.

The installation diagram is quite universal. This water heater can be installed both on the wall and on the floor.

pros

• thermal insulation is made of high-quality material;
• not afraid of corrosion;
• water heats up quickly and evenly;
• light weight;
• installation versatility.

Minuses

• the lowest maximum water temperature.

Baxi Premier plus 100

Reviews of the indirect heating boiler Baxi Premier plus 100

No. 2. Protherm WH B100Z

Czech wall model, the container of which is made of steel and covered with enamel. This water heater comes with the following components:

• steel coil;
• titanium electrode;
• three-way valve;
• three-pin thermostat;
• thermal insulation made of polyurethane material, the thickness of which is 3.5 cm.

Let's look at its technical characteristics:

• power – 1920 W;
• volume – 95 l;
• pressure (inlet) – 6 atm.;
• Max. water temperature – +80 °C;
• time for heating water to +60 °C is 18 minutes.

Two things are noted about this boiler. The first is that by installing a boiler from the same company, the boiler works more efficiently. The second is that after a long time with irregular maintenance, the technical characteristics do not undergo qualitative and quantitative changes.

Installation can be done on the wall.

pros

• wall mounting will save space;
• the set temperature lasts a long time;
• two types of protection – against corrosion and bacteria;
• nice design;
• high quality insulation.

Minuses

• it is not possible to install a tubular electric heater;
• low power;
• high price.

Protherm WH B100Z

No. 1. Gorenje GV 100

This model from a well-known Slovenian company has mechanical control. Its design is quite simple:

• steel tank with enamel coating;
• heat exchanger made of stainless steel;
• dial thermometer;
• two indicators - power and heating.

In order for the boiler to work properly, two valves were added to the design - a non-return valve and a safety valve. In addition, there is overheat protection. Also available is a magnesium anode which serves the same purpose as the valves.

Vertical position is the standard installation scheme using floor mounting. You can connect a gas boiler to it. An alternative option is to connect the central heating system to it.

Let's look at its technical characteristics:

• power – 3000 W;
• volume – 100 l;
• pressure (inlet) – 6 atm.;
• Max. water temperature – +85 °C;
• time for heating water to +45 °C is 15 minutes.

pros

• stainless steel as the basis of the structure;
• external insulation is made of high quality material;
• short heating time to the optimal temperature;
• build quality;
• small dimensions;
• affordable price.

Minuses

• Replacing the anode yourself is a rather difficult procedure.

Gorenje GV 100

Installation and connection methods

Water heater design

You can install a Termex water heater yourself. To do this, you must carefully study the passport supplied with the device. You also need to have the appropriate tools and will have to acquire additional materials. When installing, proceed as follows:

1. Select a location for installing the water heater.
2. Determine the possibilities of electrical wiring in the house. If there are not enough of them, you will have to lay a new cable from the electrical panel to ensure a secure connection.
3. Ensure that the electrical appliance is grounded.
4. Mount the water heater strictly according to the instructions, which describe the number of holes, types of fasteners, location and sequence of connecting hoses.

The best boilers up to 150 l

No. 3. Baxi Premier plus 150

Baxi Premier plus 150
This model has two installation methods - on the floor and on the wall. Let's look at its technical characteristics:

• pressure (inlet) – 7 atm.;
• power – 3000 W;
• volume – 150 l;
• Max. water temperature – +65 °C;
• time for heating water to +65 °C is 15 minutes.

The design includes the ability to install a tubular electric heater, which can heat up to +45 °C in two and a half hours. There is a recirculation circuit through which water can enter the coolant in a short time.

pros

• two built-in thermostats – for safety and temperature maintenance;
• short water heating time;
• high efficiency of the heat exchanger due to its design;
• strength is at a high level;
• light weight.

Minuses

• incomplete compatibility of the temperature sensor with the boiler;
• quite high price.

Baxi Premier plus 150

No. 2. De Dietrich BP 150

De Dietrich BP 150
This model of a cylindrical water heater has a rather interesting design. In addition, the water heater of this company is known for its high-quality assembly.

The design includes the following components:

• tank – steel outside, glass ceramics inside;
• dial thermometer;
• side flange;
• magnesium anode;
• thermal insulation made of polyurethane, the thickness of which is 5 cm.

Let's look at its technical characteristics:

• power – 3300 W;
• volume – 150 l;
• pressure (inlet) – 6 atm.;
• Max. water temperature – +90 °C;
• time for heating water to +50 °C is 17 minutes.

The height of this boiler is one meter and its weight is slightly less than 90 kg. Mount it vertically.

pros

• high resistance to corrosion;
• you can turn it on and not configure it – the device will start working immediately;
• easy installation and dismantling;
• high-quality assembly;
• reliability at the European level;
• nice design.

Minuses

• heavy in weight.

De Dietrich BP 150

No. 1. Vaillant VIH R 150

Vaillant VIH R 150
This German-made model is made of stainless steel. The inside of the tank is covered with enamel. Its design includes the following elements:

• spiral heat exchanger made of stainless steel;
• check valve;
• dial thermometer;
• magnesium anode;
• drain valve;
• thermal insulation material.

Let's move on to consider its technical characteristics:

• pressure (inlet) – 10 atm.;
• power – 2600 W;
• volume – 144 l;
• Max. water temperature – +85 °C;
• time for heating water to +65°C is 23 minutes.

You can install this water heater on the floor. You can connect in two ways: through boilers (atmoVIT and iroVIT have the greatest compatibility) or through a central water supply.

pros

• height adjustment of legs;
• high-quality heating element;
• good build quality;
• compatibility with gas-type boilers;
• nice design.

Minuses

• Installation is a little difficult.

Vaillant VIH R 150

Top rating according to KP

1. Thermex Combi Inox IRP 150 V (RUB 37,650)

The Thermex Combi Inox series of boilers (in addition to this unit with a volume of 150 liters, but also includes models with a 200 and 280 liter tank) attracts the attention of buyers for several reasons. First of all, this is a combined heating method - the ability to work from an indirect heat exchanger (power 24 kW) and from a heating element (maximum electrical power 6 kW). The internal tank and coil are made of stainless steel.

This model has the usual cylindrical shape and a white body. Mounted on the floor, without the possibility of wall mounting. The water connection is made on the side.

The maximum permissible operating pressure is up to 7 atmospheres. It is also worth noting that the control type of this device is mechanical, unlike many competitors. It differs from electronics in its simplicity and reliability.

+ Combined heating method + Adjustable power of the electric heater - 2, 4 and 6 kW + Availability of a safety valve, thermostat + Warranty period for the internal tank - 6 years

– General warranty is only 1 year – High cost

2. Drazice OKC 125 NTR (RUB 23,100)

Reliable and unpretentious, this representative of the Czech manufacturer is able to solve your problems with the lack of hot water, which, unfortunately, often arise in many cities. The tank capacity is 113 liters, which is more than enough for a family of 2-3 people.

This water heater is directly connected to the heating boiler circuit. And thanks to a special system of tubes through which the coolant circulates, you can heat water to a temperature of 80 degrees in just 17 minutes.

+ Fast heating + Relatively low cost + Large tank

– Operates at a pressure no higher than 6 atm, which makes it necessary to monitor this indicator with centralized heating – Installation of an auxiliary heating element is not provided

3. Protherm FE 200/6 BM (RUB 38,700)

This spacious model with a 184-liter tank is compatible with many types of boilers. A titanium anode will reduce the formation of corrosion stains and scale inside the tank, and the lower location of the tubular heat exchanger will ensure rapid heating of the water. A spacious tank will provide hot water to a family of 4-5 people.

An additional protection system will eliminate the consequences of overheating, and a thermal insulation system using a polyurethane “coat” will keep the water warm for a long time.

+ Capacious tank + Antibacterial coating of the tank + Sensor that regulates the water temperature

– Relatively high price – Installation of an auxiliary heating element is not provided

4. Baxi Premier Plus-150 (RUB 41,600)

Despite the rather high cost, this device is one of the recognized leaders on the market. To a greater extent, this status is achieved due to the quality and reliability of components and assembly, which are guaranteed by the manufacturer.

The internal tank with a volume of 150 liters is made of stainless steel. The additional heat-insulating layer is made of foamed polyurethane, which allows for maximum reduction of heat loss. And to ensure fast and smooth heating, the device features “coil-in-coil” technology.

Another advantage is the possibility of both wall and floor installation.

+ Universal installation + Fast heating + High quality

– Relatively high price

5. Gorenje GBK 150 ORLNB6 (RUB 22,500)

This device will delight you with its high efficiency and excellent quality, which are guaranteed by the popular Slovenian brand. In addition, the device also stands out for its wide functionality.

Thus, the equipment uses two “dry” electric heaters of 1000 W each as additional heating sources. A large magnesium anode will help cope with corrosion.

It is worth saying that the system is equipped with frost protection, so the boiler can be installed even in an unheated room. At the same time, the heater is equipped with an electronic control system, making it quite quick and convenient to configure.

The main advantage of this model is the innovative antibacterial system. If there is no heating of more than 65 degrees for 120 minutes, the device will automatically heat the water to reduce the number of microorganisms in it.

+ Relatively low price + High-quality thermal insulation + Anti-freeze system + Electronic control + Capacious tank

– Only vertical installation option is available – Operates at a pressure no higher than 6 atm, which makes it necessary to monitor this indicator with centralized heating

6. Gorenje GBK–80 ORRNB6 (RUB 19,650)

Due to the tank volume of 80 liters, which is less than most analogues, the device is very compact. The tank capacity is enough to provide warm water to a small family of 2-3 people. Moreover, the device has two water points, so it can be used for the kitchen and bathroom at the same time.

The electronic control system will allow you to accurately adjust the required temperature to which heating will occur. In total, the temperature range is from 20 to 75 degrees. For an additional heating system, the equipment design provides two heating elements of a “dry” arrangement.

It is also worth noting that this model is very safe and is protected from corrosion, overheating and switching on without water. In addition, there is a reliable system of antibacterial protection and anti-freeze, which allows you to install the equipment in an unheated room, for example, in a country house.

+ Relatively low price + Safety + Electronic control + Several water points + Compact dimensions + Anti-freeze system

– Operates at a pressure no higher than 6 atm, which makes it necessary to monitor this indicator with centralized heating – Small tank volume

7. Hajdu AQ IND150FC (RUB 20,690)

This water heater is in demand among buyers due to its affordable price and fairly wide functionality. The device is equipped with several water collection points. In addition, it is possible to install an electric heater with a power of 2 or 3 kW.

The inside of the tank is covered with glass enamel, which protects the steel from corrosion for a long time. The heat exchanger itself is made of ordinary steel with protective enamel. At the same time, thermal insulation made of polyurethane foam and a polymer paint layer on the outer surface allow the water to remain hot for a long time. Among the disadvantages, it can be noted that the device has a heating limit of up to 65 degrees and a small heat exchanger area - 0.81 sq.m.

+ Relatively low price + High-quality thermal insulation + Possibility of installing an additional electric heater + Several water collection points

– Heating limitation 65 degrees – Small heat exchanger area

This is interesting: Rating of the best hobs made of glass ceramics and tempered glass in 2019 (TOP 15)

The best boilers up to 200 l

No. 3. Protherm FE 200 VM

Protherm FE 200 VM
Another Czech model from Protherm, but with a capacity of 200 liters, was included in our rating. Its controls are mechanical; the body is made of stainless steel coated with enamel.

The design of the water heater includes the following elements:

• heating temperature limiter;
• dial thermometer;
• thermal insulation made of polyurethane;
• magnesium anode.

Let's look at its technical characteristics:

• pressure (inlet) – 6 atm.;
• power – 1920 W;
• volume – 184 l;
• Max. water temperature – +80 °C;
• time for heating water to +55 °C is 30 minutes.

Installation is carried out in a vertical position on the floor, since all the water supply is located on top.

pros

• twin type heat exchanger;
• protection against bacteria and corrosion;
• long-term maintenance of the set temperature;
• high-quality thermal insulation;
• nice design.

Minuses

• possible incompatibility with boilers - more information needed.

Protherm FE 200 VM

No. 2. Baxi Premier plus 200

Baxi Premier plus 200
The Italian company Baxi has released a water heater in its series of Premier Plus boilers with a volume of 200 liters. There are three water heating modes known for this model:

• boiler;
• heating element;
• recirculation circuit.

Let's look at its technical characteristics:

• inlet pressure – 7 atm;
• power – 3000 W;
• volume – 200 l;
• Max. water temperature – +65 °C;
• time for heating water to +45 °C is 20 minutes.

Important! Use the thermostat reading if you want to keep your boiler running longer.

Floor mounting possible. As an alternative, you can hang it on the wall.

pros

• two types of installation;
• not afraid of corrosion;
• the design is extremely durable;
• ease of installation and dismantling;

Minuses

• mediocre design.

Baxi Premier plus 200

Reviews of the indirect heating boiler Baxi Premier plus 200

No. 1. Drazice OKC 200 NTRR

Drazice OKC 200 NTRR
Czech model, but from another company – Drazice. The body is made of enameled steel. It contains the following elements:

• heat exchanger (quantity – 2 pcs.);
• power indicator;
• overheat protection;
• dial thermometer;
• magnesium anode;
• safety valve;
• 6.5 cm thick polyurethane insulation.

Let's look at its technical characteristics:

• pressure (inlet) – 6 atm.;
• power – 4800 W;
• volume – 208 l;
• Max. water temperature – +90 °C;
• time for heating water to +60 °C is 28 minutes.

Due to the non-standard number of heat exchangers, the boiler can be connected to two boilers at the same time - the person who prefers it will simply use it.

Important! Since the eyeliner is at the top, it can only be installed in a vertical position.

pros

• connection to two boilers at a time;
• high-quality thermal insulation;
• the second heat exchanger is practically free;
• frost protection;
• easy installation and dismantling.

Minuses

• It will be difficult to install due to the location of the liner at the back.

Drazice OKC 200 NTRR

Connection diagram

A water heater, even the most reliable and well made, may not give good results. The main reason for this development of events is an illiterate connection diagram or a violation of the optimal principles of system design

Maximum attention should be paid to the security group. This kit is often mounted on the cold fluid inlet and replaces a simple valve

The reason is simple: if the thermostat breaks, the increase in temperature and pressure can be very rapid.

Only immediate release of liquid to the outside can prevent an explosion. The safety group is far ahead of simple valves in terms of throughput and effectively copes with this task. It contains a built-in check valve; moreover, some models also contain drain or shut-off ball valves. Fittings for water supply are produced in a wide range, and there is no unified architecture for it. To introduce cold liquid, a block with a ½ or ¾ inch thread is used.

In addition to this part and the check valve, a ball valve is installed that will help cut off the water. By default, the pressure gauge socket is blocked. But if owners are interested in the inlet fluid pressure, they can remove the plug themselves and install a meter.

Strictly speaking, the drain key does not work on its own, but in close conjunction with the safety valve (opening it and clearing the way for water to enter the sewer). The connection to the siphon is equipped with a 1-inch thread. An additional hole is provided for air intake. Please note: it is recommended to form the most elegant drain into the sewer pipe. Even such a utilitarian part will benefit from high-quality design.

Safety groups for boilers are produced by many companies: both Russian and foreign. The differences between them are primarily due to the tank capacity they can handle. Thus, the Stiebel Eltron ZH 1 product, despite its strange appearance, is quite functional and can work with tanks of 200-1000 liters. The system is equipped with a shut-off valve, check valve and safety valve (the latter is complemented by a drain pipe). There is also a pressure reducer. True German quality results in a very significant price for the product.

Simpler modifications are essentially just an improved version of the valve. The correct choice, in addition to the purely financial component and total capacity, always takes into account the thread diameter. The vast majority of safety groups are connected to drains with a corrugated thread or are supplied with a siphon. As for the availability of additional parts, they expand the consumer's options... but also increase the bill.

As for the manufacturer, what is important here is not so much the name of the company as its integrity. Even in Asian countries, many things are done properly, but European brands are no longer a 100% guarantee of reliability

But, in addition to protective equipment, attention should be paid to the main working part, namely connecting an indirect heating boiler with a built-in heating element. This work does not differ significantly from connecting a classical electrical type device

The mains voltage is supplied through zero and phase to the input terminals on the thermostat. The zero is attached with a screw to the drive body. Next, the zero is connected to the first contact of the heating element, the second is attached to the output of the regulator, and the phase is introduced to the input of the control unit.

The degree of heating is also adjusted before turning on, but after filling

Important: start-up must be carried out with the protective device turned on. This will prevent unpleasant surprises

The thermostat in the described circuit actually replaces the fuse. Some models are distinguished by the structural fusion of a thermostat and a thermostat, but this will not affect the essence of the work in any way

The choice of a residual current device should be given special attention: the safety of both the equipment itself and the people who will use it depends on it.

Connection directly to the boiler terminals (without mediation by an additional socket) is recognized by all experts as the most correct and rational solution. If an additional connection point is still needed, it should be placed only after the differentiating machine. In case of urgent need, it is recommended to consult an experienced electrician.

The best boilers up to 300 l

No. 2. Gorenje VLG300B1-1G3

Gorenje VLG300B1-1G3
Another model from Gorenje made it into our rating. With a volume of 285 liters and a nicely designed enamelled steel body, the KGV 300-1 is a fairly powerful water heater. It includes the following elements:

• dial thermometer;
• safety valve;
• overheat protection;
• magnesium anode.

Let's look at its technical characteristics:

• pressure (inlet) – 6 atm.;
• power – 5540 W;
• volume – 275.5 l;
• Max. water temperature – +85 °C;
• time for heating water to +50 °C is 22 minutes.

The large weight of the structure (140 kg) forces the boiler to be installed only vertically. What’s more interesting is that there is support for solar collectors to the water heater itself, which is an additional advantage.

pros

• support for solar collectors, allowing them as an alternative heating source;
• thick layer of insulation (5.7 cm);
• environmental friendliness of the thermal insulation layer;
• efficiency due to the solar collector;
• nice design.

Minuses

• The summer season is the time for problems in the operation of the boiler. The main thing is to make sure it works correctly.

Gorenje VLG300B1-1G3

No. 1. Protherm FS B300S

Protherm FS B300S
Czech boiler in the shape of a cylinder with a steel tank and an enamel coating inside. Has mechanical switches. A double heating element heats the water. Equipped with the following components:

• double heating element;
• titanium anode;
• temperature limiter;
• protection against bacteria;
• recirculation circuit;
• drain fitting;
• thermal insulation made of polyurethane.

Let's look at its technical characteristics:

• inlet pressure – 10 atm;
• power – 4600 W;
• volume – 295 l;
• Max. water temperature – +85 °C;
• Warm-up time to +45 °C – 16 minutes.

Can only be installed on the floor.

pros

• double heating element quickly and easily heats water;
• easy connection of the water heater;
• long-term maintenance of water at a certain temperature;
• high-quality thermal insulation;
• The presence of a recirculation circuit will allow you to quickly heat the water.

Minuses

• There are no significant shortcomings.

Protherm FS B300S

Water heater rating

The rating includes the most popular representatives of high quality and optimal price. To identify the best models, the technical characteristics of the product were carefully studied, and the opinions of qualified service center employees were taken into account. Important indicators included information about the most common problems, service life and reliability of the models. When selecting the best water heaters, the following characteristics were taken into account:

• Type of heater;
• Sources of energy used;
• Storage tank tank volume;
• Possibility of placement in the interior;
• Type of water supply;
• Types of ignition;
• Power;
• Easy to install and connect.

In addition to the listed criteria, the price of the product was taken into account, as well as its compliance with quality.

The best steam generators

About the selection criteria

Before choosing the best option for this type of boiler, you need to understand what to look for.

We decided to briefly talk about the most significant criteria of all. Their knowledge and understanding will help you choose the most suitable option for you.

Storage tank volume

Its quantity is determined by daily needs and the boiler to which the water heater will be connected. If it is calculated incorrectly, there will be a problem with the appearance of hot water in several places at once. To prevent this from happening, you need to calculate the required volume in your boiler. As a rule, one person uses, on average, up to eighty liters of water per month. So much is spent not only on hygiene, but also on washing dishes.

Conclusion: you need to take a boiler with a reserve volume so that there is enough for everyone.

Volume is an important criterion when selecting a high-quality water heater

Storage tank material

Today tanks are made from three materials:

• steel with enamel;
• "stainless steel";
• titanium coating.

Titanium is rarely used, but its strength is much higher, as is its price.

Conclusion: the tank must be made of a material that is resistant to corrosion. In addition, you need to pay attention to the presence of a magnesium anode.

Heat exchanger structure

There are two options for its structure.

1. "Matryoshka" With this structure, one tank is located in another. The one inside is filled with water. The one on the outside is where the coolant circulates.
2. Heat exchanger with coil. Typically one coil is used, although more than one can be used.

Important! If there are two coils, the boiler can be connected to a second heat source.

How does an indirect heating boiler work?

heating element

If you have a tubular electric heater, the boiler can be used all year round. If it is impossible to connect an alternative heating element, the water heater will heat from the mains.

Inlet pressure

This indicator is one of the determining criteria when installing it in an apartment, since central heating often fluctuates.

Conclusion: you need to take durable boiler models.

It is important to consider what water pressure will be at the inlet

Find out more about the correct connection of an indirect heating boiler with your own hands - in the article you will find detailed step-by-step instructions.

Diagram using a hydraulic boom

In “multi-circuit” heating systems

To balance the coolant flows in different parts of the circuit with their own circulation pumps, a hydraulic distributor is often used:
hydraulic arrow
.

This is the connection diagram for an indirect heating boiler

uses several heating lines: radiator, heated floor, boiler heating circuit, etc. It can function without a hydraulic module combined with manifolds, but then it is necessary to provide for the installation of balancing valves to compensate for pressure drops in various “branches” of the system.

When designing such systems, it is imperative to use the experience of professional practitioners.

About manufacturers

Boilers are a fairly narrow-profile product, known in detail only to professionals in their field. We offer you a table with a brief description of well-known companies whose products deserve attention due to their high quality.

Table No. 1. Manufacturers

The best manufacturers offer only high-quality devices

Which indirect heating boiler is worth purchasing?

As mentioned earlier, choosing a boiler requires taking into account a large number of criteria. Among them, several important ones stand out.

1. Number of people.
2. Water consumption rate.
3. Number of water points.
4. Storage tank volume.
5. Power.
6. Inlet pressure.
7. Water heating speed.

Taking into account all the above criteria, we decided to help you choose water heater models that are suitable in most cases.

1. If you have a small living space and you live alone or with someone, then a boiler model like the Gorenje GV 100 will be more than enough.
2. If you have a larger living space and your family consists of 2-3 members, then you should take the Baxi Premier plus 150.
3. A two-story house in which four people live? Then you need to pay attention to the Drazice OKC 200 NTRR model.
4. If your life is at the “luxury” level, then there is only one option for you - Protherm FS B300S.

Electric water heater design

Storage systems are interconnected components that provide the consumer with heated water. The equipment is as follows:

• a cylindrical housing that houses the remaining components. Up to 15 liters plastic, for larger volumes use metal-plastic;
• heating elements or heating elements;
• steel storage tank or tank equipped with a special heat-insulating layer (to reduce heat loss). The inside is covered with glass porcelain. To prevent corrosion, the system is equipped with a magnesium alloy anode;
• control unit with operating mode indication;
• electrical connection diagram;
• water supply connection plan, outlet pipes;
• built-in protection system for internal components.

The boiler device provides hot water only after the tank is fully heated. The operating principle of the equipment is based on the principle of separating liquids having different temperatures. To drain the prepared water, a special supply pipe (valve) is used.

Note! Depending on where the heater will be used, select the required tank volume in liters. For a summer house, a capacity of up to 15 dm³ will be enough, but for a private house it is better to purchase a heater with a larger volume

Poll: Which boiler is better?

Which indirect heating boiler will you choose?

Gorenje GV 100

16.67% ( 1 )

Protherm WH B100Z

0.00% ( 0 )

Baxi Premier plus 100

0.00% ( 0 )

Vaillant VIH R 150

16.67% ( 1 )

De Dietrich BP 150

0.00% ( 0 )

Baxi Premier plus 150

0.00% ( 0 )

Drazice OKC 200 NTRR

33.33% ( 2 )

Baxi Premier plus 200

33.33% ( 2 )

Protherm FE 200 VM

0.00% ( 0 )

Protherm FS B300S

0.00% ( 0 )