Garanterm water heater models - operating instructions

First meeting

Garanterm is a water heater with a long warranty period.
It is in this way that the manufacturer demonstrates the reliability of these devices. During the development of models, maximum attention is paid to the quality of materials. They are not subject to corrosion due to the use of cold welding

The range of Garanterm water heaters is quite large. For example, with a stainless steel tank there are four series:

• Image. The design is stylish and modern, the panels have a mirror finish. This group combines devices that hold from 30 to 100 liters of water. Storage tanks – 2, temperature regulators – 2. Heating element – ​​heating element (type – dry). The equipment does not require annual maintenance. Power consumption – 2000 W. There are three adjustment modes. Devices in this series are reliable, efficient and economical.
• Rondo. The devices are equipped with two heating elements, the power of which is from 2 to 6 kW. Heating of the liquid occurs in record time, which makes devices in this series the most economical. The model line includes water heaters with a capacity of 30 to 300 liters. There is a regulator for switching power (3 modes). Currently the most popular series.
• Smart. This group includes narrow devices (diameter does not exceed 27 cm). Maximum volume – 50 l, minimum – 30 l. The Garanterm storage water heater of this series consumes 2000 W. To increase the level of efficiency, the manufacturer increased the thermal insulation layer, so that the heated water remains hot for a long time. Compact dimensions make it possible to install devices of this series in small apartments.
• Narrow. Devices with a volume from 30 to 100 liters have a flat body. Equipped with two storage tanks and heating elements. Power and temperature are adjustable. The devices are efficient and economical. Due to the good thickness of the thermal insulation, they can maintain high water temperatures throughout the day.

No less popular are models with a reinforced surface of the internal walls of the tank. Compared to classic devices, they use technologies that significantly increase the level of protection against corrosion and rust, and also maximize the protection of the coolant.

If water does not enter the boiler

If the described reasons have been eliminated, there is water pressure, but the boiler still cannot be filled, the cause may be an incorrect connection (the inlet and outlet pipes are mixed up) or a clogged mesh filter pad. It's easy to fix these problems: unscrew the hoses, rinse the filter and put everything back in the correct order.

Water heater operation diagram

Another cause of the malfunction is a broken check valve. It is installed at the entrance to the storage tank and does not allow water to return to the water supply. It can also release excess pressure when overheated. Over time, the valve spring becomes clogged with particles of scale and rust, causing the valve to jam. Disassembly and thorough cleaning will help resolve the problem. If it was not possible to clean the part and restore its functionality, you will have to look for a replacement.

Having figured out why the boiler may stop working normally and how to eliminate the most common malfunctions, it is worth focusing on preventive measures.

Most breakdowns can be avoided by following simple care recommendations:

• Do not overheat the water. Lower temperatures mean scale forms more slowly, leading to breakdowns.
• The design of many boilers includes the use of softening cartridges. Don't skimp on water softening, as this will help you avoid spending on repairs.
• When leaving for several days, turn off the device without draining the water. But turning it off at night to save energy is impractical due to the high wear and tear on the electrical part.

You can solve the problem yourself. Let's look at the most common malfunctions of water heaters.

Ways to solve problems with equipment

During the operation of instantaneous and storage water heaters, certain problems may arise. Most often this is the appearance of an unpleasant odor and mold flowing from the tap along with warm water.

This situation occurs when the heating temperature is set to 40 degrees or the device has not been used for a long time. These are favorable conditions for the development and reproduction of mold and fungi.

To eliminate this problem and not set the maximum heating, you can select the economy mode, if one is provided for a particular model. In the eco mode settings, the limit water heating temperature is set at 50-55 degrees.

It is important to use the correct boiler connection diagram recommended by the manufacturer

Secondly, you cannot connect to a hot water pipeline. Depending on the technical characteristics of the device, they are designed to work with water whose temperature ranges from 2 to 30 degrees.

This is the average range of acceptable values. A specific model may have its own limit values ​​for the temperature of running water, for example, from 5 to 20 degrees.

The third problem is when warm water stops flowing while the instantaneous water heater is running. One of the reasons is problems with incoming water pressure.

Some models require a special low-pressure mixer to operate. If it does not correspond to the technical capabilities of the device, the shutdown mechanism is triggered. The heater can resume operation only after the pressure normalizes.

Another reason is if the water supply through the water supply is cut off. It's not difficult to fix this; you just need to restart the supply.

Fourthly, the water may be running too hot. This problem in models with an automatic temperature control system indicates its breakdown and requires an urgent call to a specialist. For flow-through devices, it is necessary to increase the water flow at the inlet or clean the supply pipes.

If the owner values ​​the warranty service of an expensive device, then he will have to call a specialist to eliminate any malfunction and perform annual maintenance.

The fifth problem is too cold water, which does not satisfy the wishes of the water heater owner. In this case, the thermostat of storage units is likely to break down.

It would be a good idea to check the set temperature, because one of the family members may have changed the minimum water heating temperature.

For flow-through devices, this problem may indicate problems with the power supply. The second option is to increase the heating power.

After the service life specified by the manufacturer has expired, you should not continue to use the equipment. It needs to be dismantled and disposed of.

If this is an electric model, then it is better to cut off the wire connected to the network. This measure will protect against accidental use of the device by third parties.

How to repair a boiler with a faulty thermostat?

The easiest way to check the functionality of the protective thermostat is with a lighter. After making sure that the button is pressed, we heat the copper tip of the temperature sensor. For a working part, the protective mechanism will soon work, breaking the circuit and pushing out the button. A faulty thermostat will have to be replaced - it cannot be repaired.

Green circles indicate buttons in various thermostat models.

Drain the water

Before cleaning the boiler, you need to get rid of all the liquid inside it. If the water heater is located directly above the bathtub, you can place a large container under it and drain the water while removing the heating element. Study the structure of the boiler: if the electric heating device is screwed into the tank, carry out two procedures simultaneously. If in order to remove the heating element you need to unscrew several nuts, it is better to drain the water in advance. If properly connected to the water supply, there should be no problems with cleaning.

1. Be sure to disconnect the device from the mains and close the main water supply tap.
2. Turn off the cold water, turn on the hot water at the nearest faucet and wait until it drains.
3. Connect the tube to the drain fitting, direct it to the sewer, open the tap and drain the water.

There is another option - if there are no taps or drain pipes, empty the tank using the safety valve. Cleaning the boiler yourself using this method is a long process, so it is better to wait until the water cools down. If there is no fitting, disconnect the hot water tube and place a bucket. Gradually unscrew the safety valve until liquid flows out.

Possible malfunctions and ways to eliminate them

If the water heating indicator on the body of the heating tank does not light up, the water does not heat up, and the body is electrified, you should check the heating element with a tester. To do this, it is enough, after removing the latter, to apply the multimeter probes to the contacts and look at the resistance. If “1” is displayed on the display, we can conclude that the heating element is unusable, a rupture has occurred and needs to be replaced.

If you notice a leak in the tank, repairing it yourself is not always possible, since not in all cases the cause of the breakdown is wear of the sealant, which can be replaced. Most often, the cause is wear and tear of the tank itself, the appearance of holes in it, eaten away by corrosion. In this case, repairing the unit will be quite problematic. The leak can be welded, the holes sealed or sealed, but after a certain period of time the tank will still become unusable, as the holes will expand. In case of this unpleasant incident, in any case, it is necessary to replace the housing or purchase a new storage water heater.

Here, in essence, are all the basic principles of how to repair a boiler with your own hands. We recommend that if you have insufficient experience working with electrical equipment, contact a specialist or service center.

Important Tips

Cleaning a boiler is a simple process, but it is better not to carry out the procedure alone - water heaters can be very heavy.

• If you use chemicals, make sure that they do not come into contact with rubber seals - they may lose elasticity, causing the boiler to leak.
• Double check every operation you perform. The water heater will not work after assembly if done incorrectly.
• Connect and disconnect power only when the tank is full of water.
• When you have finished flushing, fill the boiler with water and wait a while. If the flange does not leak, great, you can use the device.
• If you use chemicals, be sure to wear gloves and a protective mask.

Now you know how to clean a boiler without calling a technician. This is a fairly simple and relatively quick process that any owner can handle. The main thing is to carry out this operation in a timely manner so that the device serves you for a long time. Remember: professional boiler repair is a costly process.

The Garanterm water heater is a universal source of hot water at any time. A dry heating element is used as a heater. For owners of houses without gas supply, an electric boiler is the most reliable and economical way to provide themselves with hot water.

Aids

Removing a copper heat exchanger from an indirect heating device is not so easy, but conventional large-capacity models can take all day to disassemble and reassemble. In this case, cleaning the boiler with chemicals will help, without disassembling or removing the device.

Visit the store and buy a product created specifically for such purposes. As an alternative, you can prepare a concentrated solution of citric acid (half a kilogram of acid per 2 liters of water). It doesn't matter what exactly you choose.

To pour the product inside, empty the container by a third through a hot water tap. Connect the hose to the drain fitting and pour the solution through it, while lifting the end of the pipe above the boiler. Leave for several hours. Then drain the solution and rinse the tank, draining the water several times and refilling it again. Connect the device, heat the water and drain it again. The water heater is ready for use.

Main types of water heater breakdowns

Even simple heating devices sometimes break down. If malfunctions occur, owners must contact company representatives to obtain warranty service.

• Sometimes water heater tanks begin to leak. If a problem is detected, the equipment should be disconnected from the power supply, shut off the water supply and empty the tanks.
• Due to poor quality water, the heating element becomes covered with scale, its ability to heat water is reduced, and it burns out. If the heating element burns out, the owners must turn off the device from the network and call a technician to replace the heating element.

Preventative cleaning of the heating element is performed as follows:

1. Turn off the water and electricity supplies.
2. Drain water from tanks.
3. Unscrew the bolts holding the panel on the sides of the device.
4. Using a wrench and a screwdriver, remove the heating elements.
5. Remove scale with citric acid poured into the tank for 3–5 minutes.

You can remove a small layer of scale with a knife. To do this, hold the heating element with one hand, and carefully remove the scale with the other.

Why are safety valves important for water heaters?

Let's understand the design of the safety device for the water heater and the principle of operation.

Device

The device itself is very simple. The design consists of two cylinders. One is large and the other is smaller. The cylinders are located perpendicular to each other.

1. Big cylinder. It contains a poppet valve, which is pressed by a spring. It ensures water flows in one direction. A poppet valve is essentially a check valve. On both sides the cylinder has a thread for connecting to a pipe and a heater.
2. Small cylinder. It is placed perpendicular to the first and has a smaller diameter. The cylinder is equipped with a drainage pipe with a poppet valve inside. It works in the opposite direction.

Principle of operation

There is nothing complicated about the operation of a water heater safety valve.

1. Under pressure from cold tap water, the check valve opens and the heater tank is filled.
2. After filling the tank with cold water, the pressure in the tank becomes higher than the external pressure and the valve closes. It will open as water flows.
3. The second valve has a powerful spring, which is triggered by increased pressure in the boiler. When water heats up, the pressure in the boiler increases. And if it exceeds the permissible value, then the spring is activated and excess water is discharged through the drainage hole. So, the pressure in the boiler is equalized to normal.

To clarify the operation of the device, we will simulate several situations.

• Let there be no valve at the inlet to the heater that would block the reverse outflow of cold water supplied to the tank. Even with stable pressure in the water supply, such a unit will not be able to work. The fact is that as the water in the tank heats up, the pressure increases. At some point, the pressure in the tank may exceed the pressure in the water supply, and hot water will begin to flow into the water supply system. So, hot water can flow from a cold water tap or from a toilet cistern.
• There are times when the pressure in the water supply system drops (this often happens at night, when the load at the water pumping station decreases). In this case, the water from the tank is drained into the water pipes. Heating elements idle heat an empty tank, which leads to inevitable burnout. Of course, in theory, the automation should prevent the overheating process. However, not all models are equipped with this function. And automation can simply fail at the most difficult moment.

Having considered both situations, someone will say that this can be avoided by installing a simple check valve. There are craftsmen who do just that. But they don’t even suspect that they are setting a time bomb in their home. It’s terrible to think what consequences can be expected if the thermostat fails.

There is no way out of the tank for boiling water. The pressure rises, and with it the boiling point of water rises. If you open the tap, the pressure may drop, and the boiling point also drops. This will cause the water to instantly boil, resulting in the formation of a huge amount of steam, which can cause a violent explosion.

Dangerous situations can be avoided by installing a properly functioning water heater valve.

The main advantages of a safety device for a water heater.

1. Blocks the reverse flow of water from the heater into the water pipe.
2. Prevents sudden changes in pressure in the water supply system.
3. When pressure increases, it releases excess water from the boiler.
4. By equipping the safety device with a lever, water can be drained for maintenance work.

Popular models

It is very important to choose a water heater that is suitable in size and power. To purchase the optimal equipment, you must be guided by several selection criteria:

Size. In city apartments it is not possible to dedicate an entire room to a full-fledged boiler room, so the equipment is located in the bathroom or kitchen. So that it does not take up much space, owners choose small water heaters. Form. Sometimes, to save space, it is advisable to buy a boiler of an unusual shape (narrow cylindrical or flat). It will depend on the characteristics of the location for the boiler. Power

In houses with weak wiring, it is important to install a low-power device. This will reduce the risk of a short circuit. Appearance

This parameter is especially important for devices installed in an apartment. The water heater will be in a visible place, so choosing an attractive product is very important.

For apartment

Water heater Garanterm GTN 80 V

A boiler in a city apartment can relieve owners from discomfort during a hot water supply outage. The water heater operates only a few weeks a year and is located in a visible place, so owners prefer small structures. The most popular models for apartments:

• Garanterm GTN 80 V. The shallow depth of the device allows it to be installed in the kitchen above the sink or in the bathroom. Thanks to its small size, the device does not create discomfort when working in the kitchen. Two tanks make it possible to simultaneously heat and consume water; the impressive volume of the boiler can provide water for a large family.
• Garanterm GTR 50 V. Narrow and tall wall-mounted boiler. Easily fits in a small space. The power of the device is 2.0 kW.
• Garanterm ER 50 V. A good model for installation in an apartment as a backup source of hot water. A small wall-mounted cylindrical water heater easily fits in the bathroom and provides water to an average family of 3-4 people.

For a country house

Boiler Garanterm ER 50 V

In country houses where people constantly live, the water heater becomes the only source of hot water. When choosing a boiler, its reliability and tank volume are put in the first place. Popular models for private homes:

• Garanterm ER 50 V is a good option not only for an apartment, but also for a private house. It is ideally installed in a special boiler room or in a bathroom. An economical 1.5 kW model heats the entire volume of water in 75 minutes.
• Garanterm GTR 80 V. The narrow boiler is easily installed in the bathroom, invisible in the interior, and fits in almost any niche. The fast heating function allows you to raise the water temperature to 75 degrees in just 130 minutes.

Design and operating principle

An electric water heater is a device designed to autonomously provide a real estate property with hot water. Often, apartment owners in multi-storey buildings install heaters in order to freely use water during periods of planned shutdown of centralized hot water supply. The principle of operation depends on the specific type of equipment, so when choosing, you must first familiarize yourself with the technical characteristics.

Flow-through

Flow-type heaters are suitable for use in cases of rare and short-term shutdowns of hot water supply. The liquid passes through the heating element and becomes warmer, so the device is able to dispense any amount of water without restrictions. It is important to take into account that the water will be warm, not hot, and it will not be possible to connect several taps at the same time.

As a rule, flow-through designs find optimal use in the kitchen.

Cumulative

The storage model is characterized by increased dimensions and is made in the form of a tank connected to pipes. Cold water first enters the tank, and then it is heated inside to a set temperature. Household storage heaters are valued for the following characteristics:

• economical fluid consumption;
• the ability to always have a supply of hot water with a temperature within 60-90 degrees;
• ease of operation and selection of heating temperature;
• universal purpose - installation is possible in a home, office, or country house.

Garanterm ER 80 H Origin

The Garanterm ER 80 H water heater is installed horizontally. The body is classic (cylindrical), covered with snow-white enamel. Mineral Glass and Dry Coat reinforcement technology was used in production. Water heater dimensions: 44.5×79.8×44.5 cm. Volume – 80 liters. Without water, the device weighs a little more than 22 kg. There is one heating element, operating with a power of 1.5 kW. In order to heat water to 45°, the device takes almost 3 hours. The tank is made of sheet metal, the pipe connections are made of stainless steel. Electrical protection system – IPX4. The water heater is equipped with a magnesium anode and a safety valve.

The model belongs to budget options, the cost of which varies between 5500-6500 rubles.

Technologies

Garanterm is a water heater that uses innovative technologies. Let's look at them:

• Point Y is a system that significantly increases the reliability of the connecting point of three seams. The essence of the technology is the use of cold welding. Due to the fact that the chrome surface does not heat up, the strength of the connection increases by 30%.
• Flat Tank – the use of two storage tanks. Used in flat models with dry-type heating elements.
• SuperFoam – thermal insulation efficiency. As a rule, all models use polyurethane, which has a low level of thermal conductivity. Thanks to its use, it was possible to significantly reduce heat loss.
• Cold Metal Transfer is a cold welding technology that maximizes the quality of stainless steel.
• Dry Coat is a system for protecting the surface of the internal walls of the tank. The enamel is applied in an even layer and firmly fixed.

Product Features

The Garanterm storage device is capable of pre-heating a sufficient amount of water: from 50 to 100 liters. This is enough to wash all members of a large family one by one. The engineers who designed the water heater took care of space in the bathroom and created a flat-shaped device with a shallow depth. This makes the device ideal for installation in small spaces. The laconic and simple design of the device allows it to fit into the interior of any room.

The device is equipped with a fast heating function. Thanks to the presence of two tanks, the boiler is able to simultaneously heat water in one tank and consume it from the other.

Advantages and disadvantages

Each device has its own advantages and disadvantages. Garanterm water heater is chosen for several reasons:

• the presence of two tanks, allowing you to simultaneously consume and heat water;
• compact size despite the large volume;
• heating 50 liters of water in just 105-115 minutes to a temperature of 75 degrees;
• The warranty period is 7 years;
• low price;
• heating power regulator, which allows you to adjust the intensity of the heating elements.

It is impossible to create an ideal heating device, so even Garanterm products have disadvantages:

• Compact - due to its shallow depth, the tank takes up very little space, but engineers were able to achieve this by reducing the thickness of the insulation on the side walls. After the device starts operating, they become noticeably warm. Due to insufficient insulation, heat loss increases - this leads to frequent activation of the heating element to maintain a constant water temperature.
• Some models of water heaters are made as simple as possible; they do not have a temperature indicator, so it is difficult for owners to determine the remaining water in the tanks.

A Garanterm boiler is an inexpensive way to provide your home with hot water. All models are designed as simply as possible, making repairs and troubleshooting easier. At the same time, the device perfectly performs its main function - heating and maintaining water temperature.

Technologies

Before purchasing a Garanterm boiler, you need to familiarize yourself with the structural features of the device. The manufacturer of water heaters uses the latest developments to create them:

• Point Y. Models are made of stainless steel with a chrome-plated surface. This material loses up to 30% of its strength when heated, and Point Y technology increases the strength of the connection due to cold welding.
• Flat Tank - allows you to use 2 tanks simultaneously for more efficient water heating.
• To preserve the beneficial properties of the body material, the Cold Metal Transfer cold welding system is used.
• The strength of the protective layer on the inner surface of the tanks is ensured by Dry Coat technology.
• Polyurethane is used for thermal insulation. It has low thermal conductivity and is used using SuperFoam technology, which significantly reduces heat loss.

The combination of modern technologies used for the production of water heaters ensures high quality devices, long service life, ease of repair and ease of use.

Popular lines

Each Garanterm series has its own characteristics that distinguish them from their analogues. Series of stainless steel boilers:

• Image is a line of water heaters with a modern design. The mirror coating of the body allows the boiler to be not only a heating device, but also an interesting element of bathroom design. The series combines designs of different sizes, so each owner can easily select the appropriate equipment for his family. There are 2 tanks, dry heating elements and 2 temperature controllers. For ease of use, there are 3 operating modes of the device.
• The Rondo series are the most popular water heaters. They are distinguished by record-breaking fast water heating and efficiency. Equipped with a switch with which owners select one of three operating modes. The appearance of the boiler is universal: a white body with a minimum number of elements.
• Narrow is a series of water heaters with a thick layer of insulation. The water inside the two tanks retains heat throughout the day. The power and maximum heating temperature are set by the owners before starting the device.
• The Smart series are small-volume devices, up to 50 liters, designed for a small family. Boilers are tall and narrow; thanks to their unusual shape, they easily fit into small niches or in the corner of a room.

To further protect the internal walls of the tank from corrosion, engineers have developed a system for reinforcing the enamel with mineral particles. This increases the service life of equipment and prevents damage to tanks. Among the series of reinforced water heaters, Origin Slim is distinguished. These are devices with tank volumes from 30 to 80 liters. Cylindrical-shaped boilers can be placed on the wall either vertically or horizontally; they can easily be placed in a city apartment in the kitchen under the ceiling or in the bathroom.

Reliability check

Garanterm is a water heater whose reliability you can be 100% sure of. The company conducts various tests for strength and safety. Let's figure out exactly how devices are tested in production.

• Acid solution (30%). By creating an acidic environment inside the tank, the durability of the enamel coating was tested for one month. No rust or metal corrosion was detected.
• High power water hammer. The Garanterm water heater (the instructions contain this information) was tested for the strength of the storage tank for 86 hours. In one second, two fairly strong water hammers were delivered. There were 150 thousand cycles in total. This indicates that the warranty period for the tank material is about 20 years.
• High pressure test. Over the course of 3 minutes, the pressure inside the tank was increased to 24 atmospheres. The test results showed that the walls and coating were not deformed, and no leaks were found.
• Temperature changes. In order to test the strength of the storage tank, in laboratory conditions, the temperature inside it was first sharply raised to 93°, and then dropped to -20°. There was no deformation.

How to check a water heater thermostat

To check the serviceability of the thermostat, you need to measure its resistance using a household ohmmeter or multimeter. To do this, you will need to remove the thermometer and connect the tester to its contacts, setting the handle on the device to the maximum value.

This thermostat will need to be replaced with a new one. You can choose a new thermostat based on the brand of water heater, tank volume, size and power of the heating element.

In addition, when choosing, you will need to consider:

• The amount of current for which the thermostat is designed;
• Device functions (adjustment, protection);
• Type of thermostat (rod, capillary, electronic).

When choosing a regulator in a store, you should show the consultant the passport from the boiler. This will allow you to choose the most suitable device.

When should cleaning be done?

The boiler needs to be cleaned approximately every two years. Start the process if you notice the following interruptions:

• the device began to heat the water for too long or switched off frequently;
• the boiler makes a loud hissing sound when operating;
• a yellow liquid with the smell of hydrogen sulfide pours out of it.

If you use the water heater at maximum temperatures, you will have to clean it more often (scale and build-up on the tank form faster). To extend the life of the device, heat the water to 60-70 degrees Celsius.

Another good piece of advice - to reduce the number of breakdowns, do not buy water heaters with heating elements made of ferrous and galvanized metals. Such parts are less resistant to rust and do not cope well with heating water.

Give preference to magnetic thermostats.

DIY boiler repair

Tanks that heat water, like any equipment, can unexpectedly fail. Typically, failure is associated with wear of parts inside the boiler or improper use. Returning a water heater to working condition is usually a simple matter, but to do this, you need to accurately determine the cause of the equipment breakdown and properly eliminate it.

Cleaning the heating tank

Flushing the inside of boilers is as important as cleaning the heating element. Place a bucket, open the cold water tap and wait until it washes away the remaining scale from the water heater. For convenience, you can remove the device from the wall.

In case of particularly heavy soiling, remove the scale manually. Do not use abrasives or hard objects - this is unacceptable on an enamel surface. Do not touch the magnesium rod; if anything happens to it, you will have to buy a new part. If you cannot remove scale, you must dismantle the device and clean it with chemicals.

After cleaning, assemble and connect the water heater. Remember: all parts must be dry.

Care and maintenance features

Both storage and flow models require care and periodic maintenance.

Trouble-free equipment service can be ensured by:

• correct operation;
• care;
• timely service.

By following the manufacturer's instructions and recommendations for operating the water heater, you can protect the equipment from accidental breakdowns.

It is advisable that during operation the device should not be splashed with water, and that it should be securely fastened to the wall

As for care, all models, without exception, are extremely undemanding. It is enough to periodically wipe off dirt from the surface of the device. A soft rag or sponge soaked in a soap solution is suitable for this.

Neither storage nor instantaneous water heaters should be watered with detergents. Also, as necessary, you need to change/clean the coarse filter.

As for maintenance, all requirements are clearly indicated by the manufacturer in the instructions for a specific model. If this is gas equipment, then specialists from the relevant service will definitely come to check it.

Electric models can be serviced independently, if this option does not contradict the warranty conditions.

Some manufacturers stipulate that installation, first start-up of equipment, periodic maintenance and replacement of spare parts must be carried out by a specialist from the dealer company.

He is obliged to put a mark on the warranty card about all work performed, certifying his signature with the company’s seal. Otherwise, the owner of the water heater loses the right to use the warranty card if such a need arises.

Many home craftsmen neglect the warranty and carry out all installation, further maintenance and repair work themselves. This option costs them much less than calling specialists

Servicing of storage water heaters is most often suggested to be carried out once a year. Carry out all the work yourself or invite authorized specialists - this depends on the manufacturer’s recommendations. Do-it-yourself maintenance often risks voiding the warranty.

For cumulative models, the following work must be carried out annually:

• clean the heating element from scale;
• remove sediment accumulated in the tank cavity;
• assess the condition of the magnesium anode and replace it if worn.

All work is carried out with the water heater turned off and disconnected from the network. In some cases, if the water has a large amount of impurities, you will have to change the filter more often and remove scale. The magnesium anode may wear out faster.

You may be interested in the step-by-step instructions for replacing the heating element with your own hands, discussed in our other article.

The internal space of the storage heater should be cleaned as plaque and scale forms on the walls and on the heating element

If the storage unit is installed in the country house and no one will use it during the cold season, then you must take care of draining the water from the container. Also, you must remember to completely disconnect the device from the power supply before doing this.

Maintenance of instantaneous water heater models is also carried out as needed. The frequency of these works will become clear during operation.

As soon as the water pressure has noticeably weakened and scale has appeared, it is necessary to clean the individual elements of the device:

• a mesh filter or coarse filter installed on the water supply;
• aerator-tabs installed in the tap hole;
• tab installed in the shower head, if the device is equipped with this element.

Clean the outside and remove filters only when the power to the water heater is turned off. If you do not remove the plug from the outlet, you may receive an electric shock when removing the prefilter.

Boilers that process pre-treated water may require less frequent maintenance work - once every 2 years.

Troubleshooting algorithm

Before you can fix a problem, you must first find it. Troubleshooting involves supplying electricity to some parts of the circuit, so all work must be carried out carefully, wearing appropriate protective equipment (gloves, safety glasses).

Troubleshooting algorithm and eliminating the cause:

• Make sure that internal damage is not mechanical in nature. For example, a common problem is low fluid outlet pressure. This can happen due to a simple clogging of the watering can, which is installed on the water tap. Fluid inlet and outlet pipes may also become clogged. They must be cleaned with a special solution at least once every six months.
• If the mechanical part is working properly, then you should start with the input voltage. To do this, you need to purchase a multimeter - a device that allows you to make electrical measurements. Having set the appropriate value on the device (alternating voltage), one probe must be placed on a phase in the terminal box, the second - on zero. A value of 220 V should appear on the multimeter screen. The tolerance is a value greater or less than 10 V.

Inexpensive multimeter for repairing household appliances

In this way, you can check the incoming voltage on any component of the device.

• To check the temperature sensor, it is necessary to measure the voltage at the output of the device and simultaneously monitor the temperature of the liquid. If the temperature rises above the set value and the sensor does not break the circuit, then the element is faulty. If voltage comes to the input of the sensor, but does not come out of it (even when the water has not yet warmed up), this also means that the element is faulty.
• The next element in the circuit is a relay that switches the power supply from one heating element to another. It is enough to forcefully apply operating voltage to its input, and the relay will pass it through itself. If there is no voltage at the output of the element, this means the relay is faulty.
• The last and most important element of the water heater electrical circuit is the heating element. The heating element is a curved tube with a metal spiral inside, on top of a ceramic body. An electric current flows through the spiral, it heats up and transfers some of the heat to the liquid. To check the heating element, it must be removed and checked for resistance. Too much resistance means breakdown of the element and, accordingly, its replacement.

1500 W heating element

Sometimes the best and most reliable way to determine a malfunction is a visual inspection of a household appliance. For example, the cause of a drop in pressure may be a simple tank leak caused by a long service life and poor quality water.

Customers' opinions

“I have been using a 50-liter Smart boiler since 2013 - it fits perfectly into the niche with all communications. I clean it regularly, look at the seams from the inside - no reason to worry. Both heating elements are original. I insulated the outside of the casing myself with foil insulation, but overall I’m happy with this water heater.”

Vladimir Timchenko, St. Petersburg.

“So I read other people’s reviews and understand: domestic manufacturers don’t have it all the time. My 80 liter Garanterm Rondo has been working great for 5 years. Yes, it needs to be cleaned, I’ve already replaced the burnt heating element, but there are no leaks, the water heater functions stably, and for its price it’s generally excellent.”

Mikhail Leonidov, Kirov.

“Garanterm and I were very unlucky - twice in a year and a half we had to be replaced because of a leaking tank. It’s good, at least the store doesn’t unlock it. But I’m already thinking about taking a regular enameled water heater instead of stainless steel. It seems that they are more reliable, and the price is almost half as low. It definitely makes sense."

Victor, Nizhny Novgorod.

“I somehow stopped liking the 80-liter Garanterm Narrow as soon as I brought it home. For some reason, the outlet pipe (for hot water) turned out to have a different internal diameter, so I had to cut out an additional gasket to install the hose. Cold is fine. The fasteners are skewed, the anchor will be loaded unevenly. And I have tiles that cover the entire wall, that is, one step to the left, one step to the right - it will crack. If it turns out like this at work, I’ll be completely disappointed.”

Andrey, Moscow region.

“Due to a lack of money, at one time I had to buy a simple and budget water heater. The consultant at the store advised me to take an enameled tank from the Garanterm ES series instead of stainless steel, for which I thank him very much. We saved a lot of money on the purchase and have been using hot water for 6 years without any problems. The anode was changed three times, the heating element is still the old one.”

Roman, Moscow.

Price

Judging by the reviews, Garanterm products sometimes present unpleasant surprises, especially when the quality of tap water is low and maintenance is irregular. But in fact, these boilers perform no worse than many famous brands in operation, and they can be purchased at more affordable prices.

Briefly about the manufacturer

The equipment of the Chinese company Garanterm fully meets the requirements of modern customers and current trends. In each product, professionals have combined stylish design, high productivity and excellent quality.

The brand offers a huge range of models that differ in size, efficiency, price and other parameters. Regardless of the type of device, each product unit combines characteristics such as: productivity, convenience, reliability and aesthetics.

In the production of heaters, the company uses advanced technologies, the latest techniques and innovative equipment. A team of professionals is doing everything possible to make smart solutions available to most customers.

Installation methods

Installation of water heaters is very simple. It can be performed by anyone with due diligence and instructions. Each device comes complete with fasteners and everything necessary to connect the boiler to the water supply and electrical networks.

Types of fastenings

There are several types of water heater mountings. Each owner chooses a suitable model based on the characteristics of the place where the device will be installed:

• Horizontal is an excellent option for installing a boiler above a sink in a kitchen or bathroom. It is usually used in apartment buildings where saving space is a top priority.
• Vertical is the classic way to install boilers. It is used in private homes to save square meters in the boiler room or in apartments. Narrow water heaters located in small niches or in the corner of the room are the most economical option for placing equipment.

Some devices can be installed both vertically and horizontally.

Connection

Connecting to a single source is a simple and inefficient way to use a water heater. The 50 liter model is capable of providing water to several sources.

1. Using the included mounts, the equipment is installed on the wall at a distance of 30 cm from the ceiling.
2. The cold water supply pipe is equipped with a safety valve.
3. Water is removed from the boiler. To do this, you need to open the water supply and drain valve.
4. The water heater is connected to the electrical network using a special connector; if necessary, the owners can extend the wire themselves.

After completion of the work, all connections must be additionally sealed.

Installation of instantaneous water heater

Below I will describe the installation process of the Thermex System instantaneous water heater (Termex System) , a photo of which is given at the very beginning of the article. Here is the box from under it:

Instantaneous water heater Termex system_box

The erotic fantasies of designers of other heaters will play out more strongly, read the article to the end

It is mounted on the wall using ordinary dowels, its weight is light, so there are no problems. The main thing is to take into account that in addition to the electrical wire a WATER wire is also connected; you need to buy water hoses of the required length in advance.

Cleaning the heating element

The boiler must be cleaned immediately - wet scale is much easier to remove than hardened scale. The bulk will be located at the heating element. There are several ways to clean an element.

1. Remove dirt by hand. Remove the top thick layer of scale from the surface of the heating element with a knife or a stiff brush. Act carefully so as not to damage the surface of the element with sudden and careless movements. Afterwards, you can treat the heating element with sandpaper - the cleaner it is, the better it will work.
2. You can buy a huge number of descaling products in the store. It is better to purchase a cleaning product for electric kettles - its operating principle is the same as that of a boiler. Take any enamel container, add liquid (read the proportions on the package first). Leave it for a while.
3. Instead of ready-made products, you can use the following. Fill a small container with a solution of citric or acetic acid. Place the element in a bottle and leave for a day. To increase cleaning efficiency, place the container with the heating element on low heat (30 minutes).

Instructions for starting the boiler for the first time

Boiler installed

Whether the installation work was carried out by specialists or the owner does not matter. In any case, you need to check the operation of the system. To do this, following the given tips, you need to start the heater for the first time.

To do this, following the given tips, you need to start the heater for the first time.

We start by checking the correct connection of the systems that are responsible for heating the water. Fidelity, reliability of connection of phase and neutral wires, presence of grounding. The functionality of the circuit breaker should also be checked. To do this, use a device - a tester or a special electrician's screwdriver. Next comes the search for leaks in the system. It would be useful to control the connection of underwater pipes. Presence and diagnostics of check valve operation. Running water into the boiler

Attention, the correct sequence of actions for the first and subsequent starts of the system will be described in the next section. Repeated search for water leaks in pipe installation areas

Diagnostics of heater operation. Turn on the device by pressing the power button. Fixing the initial temperature sensor readings. Recheck after 15 minutes

An increase in indicators indicates the correct connection of the heating elements.

Study the recommendations on how to connect the boiler to the water supply, follow safety rules.

Read how to make an indirect heating boiler with your own hands.

How to drain water from a boiler: tips, recommendations, step-by-step instructions in our article.

Removing scale

If the boiler does not heat the water to the required temperature, but still makes noise when turned on, it means that scale has formed on the heating element, which you need to clean yourself. This is not difficult to do; you just need to unplug the equipment, drain the water from the tank and disassemble the housing to remove the heating element. You won’t have any difficulties disconnecting the plug from the socket, but draining the water may make repairs a little more difficult. We immediately recommend watching a video lesson that shows a simple method for solving this difficulty:

After you empty the tank, you will need to disassemble the boiler yourself. To do this, carefully disconnect all the fastons connected to the thermostat and unscrew the bolts, of which there are usually 6 pieces.

When removing the heating element, some more water that remains in the tank will pour out. It is recommended to clean the heating element itself immediately, while it is wet and scale deposits have not hardened. For cleaning, we recommend using special products that can be sprayed onto the heater. After some time, the deposits can be easily removed with a wooden spatula or even a dull knife. Also, for repairs, you can boil the heating element in a bucket with the addition of a special acid to the water, which will effectively solve the problem. To be sure to get rid of scale, we recommend using fine-grained sandpaper (“sandpaper”) to clean the tubes to a metallic color.

Simultaneously with the repair of a boiler that heats water for a long time or poorly, it is recommended to replace the magnesium anode, which protects the tank from corrosion. To do this, dismantle the worn rod and purchase exactly the same one so you can replace it yourself!

After this, you need to reassemble the boiler in the reverse order and check whether the weak water heating was repaired. Do not forget that first of all you must fill the tank completely with water, after which you will connect the plug to the power supply and start.

We draw your attention to the fact that there is a situation when the boiler does not heat the water because the heater is broken. In this case, self-repair consists of testing it with a multimeter, setting the resistance measurement mode. We will tell you about this below!

The basic operating principle of a storage water heater

Before connecting the device to the electrical network and water supply system, it would not hurt to better understand how the device actually works.

Such knowledge will not be superfluous at all, since you will also have to deal with the maintenance of the water heater during its operation.

The basic principle of operation of the device is to fill the reservoir with water, heat it to a certain temperature and further maintain this temperature value throughout the entire operation. (See also: How to connect a boiler with your own hands)

So, what can a storage water heater provide you with:

1. Depending on the volume of the tank in the device you prefer, you will always have hot water, regardless of how the central heating system works. During a short power outage, the water in the heater will still remain hot for a significant period of time.

A storage type device can be connected in such a way that hot water will be supplied to both the kitchen and bathroom. Instantaneous water heaters, for example, simply do not have this advantage.

Connecting the device to the network does not require a complete replacement of the wiring and installation of an additional 380 Volt outlet.

(See also: Installing a storage water heater with your own hands)

The water pressure in the system can be very minimal. This fact will in no way affect the operation of a storage-type water heater, unlike geysers, for example.

The correct connection diagram for an electric water heater ensures that the water can heat up to 80 degrees Celsius.

Despite the thermostat built into the device, thanks to which it can automatically turn on and heat the water, hot water maintains its temperature inside the tank for a long time.

(See also: How to disassemble an Ariston water heater)

Of course, there are no ideal things, as well as devices, and therefore storage water heaters have some disadvantages.

1. It takes a certain amount of time to heat the water. The larger the tank volume, the longer it will take. It’s not very convenient when you urgently need to go somewhere, but it’s impossible to take a shower, because after washing all the household members there is simply no hot water left.

Another inconvenience is the size of the water heaters. Not even large storage type devices, I have significant dimensions. Such a water heater, even the smallest one, cannot be installed under the sink.

If you rarely use the full volume of water, and it is forced to constantly heat up and cool down, you cannot use it for drinking.

The most common breakdowns and how to fix them

Instantaneous water heaters are quite simple in design if they do not have additional electronic control units. If any malfunction occurs, you can simply seek help from the list in which they are all listed. The list of faults also includes methods for eliminating them.

Failure No. 1: burnt-out heating element

The most common breakdown in which a household appliance continues to function even when the warning light is on, since the electric current reaches the heating element, but does not pass through it.

Burnt water heater heating element

We repair the heating element in the following order:

1. Disconnect the water heater from the electrical network and drain the water from it.

2. Remove the heating element. To do this, you need to unscrew several bolts securing it to the body of the water heater.

3. Attach the working probes of the multimeter to the two main terminals of the heating element, having previously set the resistance measurement. The operating resistance of the heating element is 32-35 Ohms. If the multimeter shows one, this means that the heating element is damaged.

Installation of the element occurs in the reverse order. Also, do not forget about the rubber gasket under the heating element. If the gasket has become unusable, it should be replaced.

Failure No. 2: clogged household appliance

The consequence of a clogged water heater may be too low water pressure at the outlet. An incomprehensible noise is also heard, similar to the passage of large debris through the pipes of the system.

In case of such a breakdown, all working elements of the electrical circuit remain intact, so troubleshooting can take a lot of time. A clogged water heater does not require repair; it only needs to be thoroughly cleaned.

Water heater clogged

The procedure for cleaning an instantaneous water heater:

1. The device should be de-energized and all water drained from the system.

2. It is necessary to remove 2 wires from the heating element: phase and neutral. Then unplug the heating device and rinse it thoroughly in hot water. It is prohibited to use hard objects to remove scale and rust, as this can damage the body of the element.

3. Rinse the water intake and discharge pipes under low pressure. For the best effect, it is allowed to use household chemicals with a mild effect, without active elements.

4. Install the heating element in the reverse order. Turn on the device and check its functionality.

Failure No. 3: power switch does not work

Multi-stage power switches are installed mainly on the latest generation boiler models. This allows you to accurately regulate the water temperature and save on electricity. The consequence of a breakdown of the power regulator: the device does not respond in any way to the rotation of the operating mode switching handle. The outlet may contain slightly heated liquid, but the pressure remains normal.

Standard power switch

Most often, the power switch is a variable rheostat, which can be checked using a multimeter. It is necessary to connect probes to the terminals of the element and smoothly rotate the adjusting knob. If the resistance changes, then the rheostat is working; if not, then it should be replaced. When replacing, it is necessary to mark the wires and connect them to the corresponding switch terminals. It is better to buy an original switch rather than a cheaper analogue.

Failure No. 4: the external tank is broken

Over a long period of use, the water heater tank may become leaky. The integrity of the material is also affected by the quality of the heated liquid - very often, after several months of operation, scale forms on the surface of the heating element.

Damage to external tank

If the housing is broken, the liquid pressure at the outlet drops sharply, and the device body may be covered with liquid leaks. This malfunction is determined quickly through visual inspection.

Another reason for water leakage can be a worn-out rubber gasket under the heating element - the so-called flange. To replace the gasket, simply drain the water, disconnect the water heater from the mains and remove the heating element. Having taken out the old gasket, you need to put a new one in its place and reassemble the device in the reverse order.