Technical characteristics of the gas water heater Oasis - detailed overview of models

Malfunctions happen in any equipment, regardless of the manufacturer. Be it a famous German brand or its Chinese equivalent. The difference is that in the second one they occur more often.

The breakdown of such an irreplaceable device as a geyser creates a lot of inconvenience. If the malfunction is not related to a gas leak, in most cases, you can repair the Oasis geyser yourself. We will talk in detail about what kind of breakdowns are most often diagnosed in speakers of this popular brand among users, as well as how to fix them in this publication.

General description of the model range

Oasis instantaneous gas water heaters will fit perfectly into the interior of an apartment or house. Thanks to their compact size, they take up little space and weigh no more than 11 kg. The model range includes options with and without chimney.

Presented models with power up to 26 kW. The maximum gas flow reaches 2.6 m³/h. Built-in safety sensors automatically turn off the system in the event of a sharp increase in temperature, lack of traction, or gas leak.

The mesh water filter protects against debris and blockages in the pipes. On the body of the Oasis speakers there are knobs for regulating the water temperature and gas supply power.

There is also an LCD display on which the desired temperature mode is set and error codes are displayed when they occur. Ignition occurs automatically if you open the water tap. Shutdown - when closing.

Other faults

Also, malfunctions of the water heater can be caused by the following reasons:

Ignition system failure

In speakers without an igniter (electronic ignition), the spark is generated by the batteries; perhaps they have run out.
The battery capacity is not always enough for a year, as the manufacturer promises. In other models, a spark is produced by a piezoelectric element triggered by a turbine installed in the water supply.

If the water pressure is weak, such an ignition device will not work.

When buying a column, you need to pay attention to the minimum water pressure that it requires for normal operation. In columns with an igniter, the latter can become clogged: its flame becomes weak, sometimes yellow (this is how the lack of air in the gas-air mixture manifests itself). As a result, it either cannot ignite the main burner at all, or does this after a large volume of gas has entered, as a result of which the column ignites with a characteristic bang

After cleaning the igniter the situation returns to normal.

As a result, it either cannot ignite the main burner at all, or does this after a large volume of gas has entered, as a result of which the column ignites with a characteristic bang. After cleaning the igniter the situation returns to normal.

In columns with an igniter, the latter can become clogged: its flame becomes weak, sometimes yellow (this is how the lack of air in the gas-air mixture manifests itself). As a result, it either cannot ignite the main burner at all, or does this after a large volume of gas has entered, as a result of which the column ignites with a characteristic bang. After cleaning the igniter the situation returns to normal.

The membrane of the water unit has exhausted its resource

This element, made of a polymer material, must have sufficient elasticity, but over time it loses it, becoming rigid, and may even crack. It can also become overgrown with lime deposits.

Accordingly, the column will stop turning on, even if the user opens the tap completely.

The membrane must be inspected and if its condition is truly unsatisfactory, it must be replaced.

Control module board burnt out

This often happens with imported speakers, which are very sensitive to the quality of the power supply. They should be connected through a stabilizer.

It is also useful to know that smart speakers with electronics should not be turned off at night.

Device

The design of the Oasis geyser is simple. The delivery set consists of:

• from a panel with control knobs, an LCD screen, a fire monitoring window;
• a heat-resistant heat exchanger in which scale does not form due to the special coating;
• burners;
• water, gas pipes;
• fastening elements.

The burner in the Oasis equipment fires automatically when the coolant enters. Cold water is heated in the heat exchanger due to the combustion of fuel, and is supplied heated to the tap.

The ionic coating of the heat exchange surface prevents scale from appearing, and the magnetic filter protects the housing from corrosion. The LCD display shows the operating temperature, and when a malfunction occurs, a breakdown code.

The water heater operates on a gas mixture, so before installation it is important to have permission from the relevant authorities. Installation according to the placement plan is carried out by gas workers. It is important to comply with the requirements for the room where the Oasis speaker will be located:

• the presence of a good exhaust hood and ventilation system;
• volume more than 8 m³;
• cladding of surrounding surfaces with heat-resistant materials.

Also take into account the following:

• the installation of the device should be such that it is convenient to observe the combustion of gas;
• it is necessary to provide a free space in front of the front of the device of at least 60 cm;
• It is prohibited to place heating devices under gas equipment.

The gas service carries out the first switch-on, filling out warranty documents. Before the first and subsequent starts, it is recommended to check the draft, tightness of connections, and unhindered opening of gas valves.

Full disassembly service

Do not be afraid to disassemble the water heating installation, the procedure is not that complicated. You will need the most common tools - screwdrivers, pliers, standard wrenches. What to do before starting work:

1. Close the taps of the cold water, hot water and gas supply pipelines. Unplug the turbocharged dispenser from the outlet.
2. Substituting the container, unscrew the union nuts (American) on the connection of the water pipes. Disconnect the connections from the unit without losing the rubber gaskets.
3. For convenience, it is recommended to remove the gas heater from the wall. It is not easy to disassemble and clean a unit that is hung too high or installed in a narrow niche.
4. To dismantle the water heater, disconnect the gas line and the chimney pipe. Remove the unit from the hooks.

Burner

The operation of the Oasis gas water heater depends on the burner. This element is made of heat-resistant steel. Ignition is carried out automatically from 2 batteries when you open a hot water tap. This process takes about 7 seconds, but when you first turn it on it reaches 1 minute.

All Oasis gas models do not have a flame modulation system. The burner power can only be changed manually.

Initially, the gas water heater runs on natural gas. To connect bottled fuel, replace the nozzles and regulator knobs.

It is important to monitor the flame through the window on the body of the gas equipment. If it smokes or sparks, clean the burner:

• turn off the column;
• turn off all taps;
• disassemble the device;
• remove dust and soot deposits with a brush;
• Use a damp cloth to remove fumes from the collector and nozzle;
• remove the burner device;
• wash contaminated elements with soapy water;
• All components are dried dry;
• everything is put back together.

Before turning on, check the tightness and traction. A clogged gas burner impairs performance and, due to the large release of carbon monoxide, leads to gas poisoning. It is recommended to clean this element at least once a year. Under normal operating conditions, the flame on the burner is blue.

How to extend the life of the column?

The longevity of a speaker depends on many factors. The main part of them is laid at the manufacturer, the rest are determined by operating conditions.

By following some rules and recommendations, you can significantly reduce the number of breakdowns and extend the life of the column.

Features of using batteries

Of all the parts, batteries require the most frequent replacement.

For geysers, you should choose only alkaline batteries made using Alkalin power technology, size “D” and the first letter “L” in the designation is LR20. Their capacity and service life are five times greater than those of salt ones: from 1 to 1.5 years.

High-quality batteries cost from $1.2. There is a radical way to reduce the cost of replacing batteries - converting the speaker to power from the mains.

To do this, you can buy a special 3 V power supply, or use a 5 V mobile phone charger with an additional stabilizer.

The main requirement is that its power is sufficient for ignition, which occurs at a supply voltage of 3 V and a current of 350 mA.

In case of a power outage, you can always keep batteries in reserve; fortunately, alkaline batteries have a shelf life of 5 years or more.

Column heat exchanger quality

When choosing a column, special attention should be paid to the quality of the heat exchanger. The type of metal and its quality have a great influence on the lifespan of the radiator. They are made of galvanized steel, stainless steel, copper.

The most durable of stainless steel, but inferior in thermal conductivity to copper. Accordingly, they are less economical and have lower efficiency. Copper is the most efficient in heat transfer, but also the most expensive.

The high cost of copper leads to the fact that manufacturers save as much as possible on the thickness of the heat exchanger wall, bringing it down to 0.5 mm, which significantly reduces the service life.

For the same reason, other metals are added to copper. The alloy obtained in this way may have unpredictable properties. As a result, such a heat exchanger cannot even be soldered.

System water quality

If the water in the system is subjected to frequent chlorination, this will negatively affect the condition of the copper heat exchanger. In combination with the thinned walls of the pipeline, this can quickly lead to corrosion and the appearance of fistulas.

Increased water hardness in combination with heating causes no less problems. Scale deposits require periodic washing.

You can improve water quality using aquafilters and magnetic softeners. Detailed information and rules for choosing a filter for purifying tap water are given in the following publication.

Specifications

Oasis instantaneous water heaters with a power from 12 to 26 kW are capable of heating up to 13 l/min. The speakers turn off automatically if there is no water or gas supply. Heat-resistant heat exchanger, does not heat the housing.

For long-term, high-quality operation of the Oasis gas water heater, the manufacturer recommends:

• annually carry out full maintenance with replacement of sealing elements, lubrication of connections, checking the operation of sensors;
• regularly change filters in the water heater;
• keep the burner clean;
• wipe the body from dust and dirt;
• clean the chimney;
• Before each use, inspect the device;
• Protect the water heater from freezing.

For wintering, turn off the gas water heater completely, drain the remaining water, and dry all the elements dry. It is important to keep the machine clean both inside and out. It is prohibited to use strong chemicals containing abrasives to remove dust and dirt.

It is recommended to additionally install gas and water filters, and also to prevent overheating above 45°C to extend the life of the Oasis water heater. In case of scale formation due to hard water, wash with 10% citric acid solution. In this way, the heat exchanger, pipes, and all connections are cleaned.

If repairs are necessary, it is important to purchase original spare parts for Oasis geysers from service organizations.

Rules for replacing a gas water heater in an apartment - important tips and nuances in our article.

Possible reasons

In case of incorrectly connected pipes, the water heater protection system itself blocks the gas supply, which is why it does not turn on. The pipe connection diagram is very simple:

The gas supply pipe is connected on the left, the cold water supply pipe is connected in the center, and the hot water outlet pipe is on the right.

It is also necessary to ensure that all gas supply valves are in the open position. It may well be that after installing new equipment you simply forgot to turn on one of them. All taps with yellow handles must be open.

No or poor draft in the chimney.

Accumulated soot, construction debris or other foreign objects entering the chimney can prevent combustion products from being removed through the chimney, which poses a danger not only to the health, but also to the lives of residents.

hood

You can easily check the presence of draft in the chimney yourself. To do this, you just need to bring a burning match to the inlet. If its flame rushes towards the hole, then the chimney is working properly. Otherwise, you will have to look for the reason why there is no traction. As you can see, an ordinary match can help eliminate a dangerous malfunction and protect your household from carbon monoxide poisoning.

If there is no draft, make sure that there are no obstacles above the ventilation shaft exit, such as a satellite dish. In this case, the problem can be completely solved without seeking help from specialists.

If no external circumstances interfere with the proper operation of the chimney, then you are definitely dealing with contamination. What to do in this situation? Of course, you can try to clean it yourself, but there is a possibility of damaging the branches from neighboring apartments.

Increased relay sensitivity.

The most likely cause of the malfunction is the increased sensitivity of the thermal relay, the protection of which is activated against overheating, stops the gas supply and the column goes out.

Parameter table

The speaker manufacturer Oasis produces devices capable of heating from 6 to 13 l/min. The model range of the Standard series is presented in the table.

All models operate continuously at low gas pressure, are equipped with a safety system, and weigh less than 11 kg. The columns are painted white, but cladding with a pattern can be ordered.

Some water heaters are available with a flueless system, this makes installation in apartments easier. Some models are equipped with a “winter-summer” system that controls fuel consumption depending on weather conditions.

Specifics

PKO Pipe Coil JSC, which produces Astra gas water heaters, has been around for more than fifty years. Perhaps our grandparents also used his products. True, then this company was called differently.

The Astra column is necessary for working with hot water supply. Only gas is used as fuel.

The design of such a column is very simple and includes several components. The main part – a rectangular body – is fixed to the wall. The front panel contains windows for ignition and combustion control, a power button, and gas supply adjustment knobs. At the bottom there are connecting elements with threads on both sides of the gas supply, cold and hot water, and on top there is a section of the chimney pipe.

All key components are located in the middle of the case and secured to the panel located at the rear. It also includes holes for fastening. The firebox is made of good fire-resistant material that has a long service life. Ease of execution is considered an advantage in the model market and provides the manufacturer with great demand for its own products.

The working principle is as follows: in order for gas to enter the gas block and the ignition wick, you need to turn the ignition burner knob to the left and turn on the device by pressing the button - the burner will methodically turn on. The hot water outlet temperature is set by the position of the control knobs. By turning from the right side to the left, the gas supply increases, thus increasing the water temperature, and from left to right, on the contrary, it decreases.

According to functionality, the components of the column are figuratively divided into water and gas parts. On the market you can choose repair kits and spare parts for any unit separately, as well as the entire unit.

The technical properties of Astra speakers make it very easy to compete with other manufacturers. The main advantage is the power of the device: for certain models it is equal to or even exceeds 20 kW. A large firebox and relatively low gas consumption distinguishes this brand perfectly.

Naturally, each model has its own small details in the characteristics, but general values ​​can be derived. For example, the hot water supply is approximately 10-12 l/min, the outlet water temperature range is 35-60 degrees, the operating pressure range is 0.5-6 bar.

The manufacturer also thought about the safety of its own products. If the burner goes out, the water supply will end.

Each model comes with a passport and instruction manual, which outlines operating rules and non-hazardous work in more detail, and also includes an important diagram of the device.

Now on the market there are a lot of gas-powered speakers with an original color palette. Consumers sometimes make the mistake of giving preference to color over technical specifications. The Astra gas water heater does not strive to distinguish itself due to its appearance, but focuses on its ability to work and has its own range of models.

Model 8910-00.02

has high power - up to 21 kW and an operating capacity of 12 l/min. Dimensions – 700x372x230 mm. The chimney has a diameter of 120 mm. Gas consumption per hour is 2.3 cubic meters. m. Ignition occurs manually.

Open type firebox. It is not difficult to study cravings. The gas pipe for connection has a cross-section of 3?4 inches, the water pipes - 1?2 inches. The weight of the device is 15 kg.

Model 8910-08.02

has slightly low power (up to 18 kW) and productivity (10 l/min). However, fuel consumption is also lower - 2 cubic meters. m/h. The weight of the unit is 14.7 kg. Otherwise, the device is very similar to the previous model. Ignition is also done manually

Model 8910-15

It has one significant difference - this system has electronic ignition of the burner, which is very comfortable. Now there is no need to worry about the availability of matches.

The power of the unit can reach 20 kW, productivity – 10 liters of hot water per minute. Gas consumption is 2 cubic meters. m/h. Speaker weight – 13.9 kg. The diameter of the chimney is 135 mm.

Model 8910-16

It is also equipped with an electronic automatic burner ignition control system. This automatic device is a record holder for power (up to 24 kW). The device heats water at a speed of 12 liters per minute. Gas consumption – 2.3 cubic meters. m/hour. The weight of the device is 14.7 kg.

It should be noted that spare parts for Astra speakers can be easily found at inexpensive prices.

Features of repairing old models

First of all, you need to determine why the geyser slams and makes noise when you turn on the water, and if all of the above shortcomings have already been eliminated, but the cotton still persists, then you need to check the functional condition of the product.

Let's start by looking at simple samples of equipment with wicks that are used to ignite a flammable mixture.

In such models, a loud popping noise often occurs when the design parameters do not match the flame contours. Timely ignition of the burner does not occur if the fire size is small or too large. The cause of this problem is considered to be mechanical clogging of the nozzle holes. Through these holes, a dosed supply of gas is formed.

Old models of geysers break down. The cause of the popping sound when turned on is most often a clogged nozzle, burner, or lack of traction

To troubleshoot the problem you will have to do the following:

The main casing is dismantled in order to provide full access to all internal components of the column. The block where gas and air are supplied (many manufacturers use this structure) must be disconnected from the pipe system. Next comes cleaning the nozzle. The most commonly used wire is a soft type of metal. It can be copper or aluminum

The procedure is carried out carefully, so that the calibrated hole is not damaged. Assembly is performed in the reverse order, paying special attention to the integrity of threaded connections and seals.

The jets may become clogged in the main burner. With such a blockage, switching on is also carried out with a bang. When disassembling the device, you need to remember that some components and elements, for example, gaskets, valves, thermocouples, are not very durable, so they must be handled extremely delicately.