How to set up an oasis gas boiler. Error codes for Oasis gas boilers: meaning and what to do

A few words about the manufacturer

The Oasis company is a well-known manufacturer of equipment designed for autonomous home heating. The product range includes:

radiators
instantaneous water heaters
boilers

The Oasis boiler manufacturer is of Chinese origin, but most sellers position it as a Russian product.
The company itself is quite well known in Asian countries, but in the Russian Federation, water heating heating equipment of the Oasis brand appeared relatively recently. Chinese heating household gas boilers Oasis are distinguished by the thoughtfulness of their operation and the technical part of the device, as evidenced by consumer reviews.

Internal structure of Oasis boilers

The design of the Oasis boiler is designed taking into account complete automation of the operation of the equipment and maximum operating comfort for the user.
One of the characteristic features of the modifications is the presence of a closed combustion chamber. Air intake is carried out from the street, using a coaxial chimney. Combustion products are also removed through the pipe. This makes the operation of boilers as safe as possible. In addition, due to the closed firebox, gas consumption is significantly reduced.

Separately, we can note the presence of two heat exchangers. This solution increases the speed of heating water for domestic hot water, and also allows the device to be started in summer mode, which increases its efficiency.

All Oasis wall-mounted double-circuit gas heating boilers have a high degree of autonomy, achieved thanks to an internal structure that includes:

Burner - a pressurized type device is used. The connected burner is controlled automatically. Electric ignition is provided. Photo sensors are installed on the burner to monitor the presence of gas. After a power outage, the gas supply to the burner is blocked. The boiler uses a coaxial chimney. It simultaneously takes in air and removes combustion products. Not included in the basic package.
Safety group - 2-circuit mounted gas heating boiler Oasis has multi-level protection that prevents spontaneous combustion and the occurrence of explosive situations. Provided: water flow sensor - monitors the pressure of the water supply and heating system, blocks operation if it drops to critical levels. Relief valves are installed to help in case of overheating of the coolant. When the room temperature drops, the antifreeze system is activated, maintaining minimal heating of the heating system.

Oasis boilers have been certified and received permission to operate by Rostechnadzor. This made it possible to operate equipment from a Chinese manufacturer throughout the Russian Federation.

What to focus on in operation

Malfunctions of Oasis boilers are mainly associated with omissions in the installation or maintenance of equipment. A complete list of manufacturer's recommendations can be found in the operating instructions. The most important requirements are the following:

Boiler piping - the internal structure of the boiler contains a circulation pump and an expansion tank. During installation, you will need to additionally install a filtration system. The automation is sensitive to voltage drops, which is one of the main disadvantages of the Oasis boiler. To eliminate possible failure of the control board, you need to connect a UPS.
Lots of noise – the forced-air burner is noisy. The noise level requires installation of the boiler in a separate room. The technical characteristics declared by the manufacturer in this regard are somewhat different from what actually happens. It is especially noisy when the DHW is turned on.
Coaxial chimney - it is extremely important to comply with the installation requirements, strictly adhere to the maximum height, angle of inclination and other parameters. Productivity and efficiency ultimately depend on a quality installation.

The boiler installation standards are quite simple and apply to almost every model of gas equipment. Strict adherence to recommendations is the key to trouble-free operation of equipment.

Chinese doesn't mean bad

For domestic consumers, Chinese equipment is often synonymous with low-quality products.
But Oasis boilers refute this statement. All components from the closed combustion chamber to the temperature sensor are checked for quality and compliance with standards. The only condition for trouble-free operation is the installation and operation of the boiler in accordance with all the rules and in accordance with the manufacturer’s recommendations.

Technical data, instructions boiler OASIS

The OASIS wall-mounted gas boiler for home heating is presented in two modifications, the first model, the simplest OASIS BM, has all the technical data necessary for modern technology, the second model OASIS RT is fundamentally different in its internal filling.

Electronic control panel for gas boiler OASIS.

Turn on the boiler, set the temperature of the DHW and heating system. In summer mode (sun) using the buttons for the DHW circuit and in winter mode (snowflake) for the heating circuit. The transition between modes is carried out by the “mode” button. Ready! The boiler will automatically maintain the set temperature in the DHW system when the hot water tap is opened, and in the heating system, with a turn-on interval of 15 o C.

Control functions with indication output on the liquid crystal display of all OASIS models.

Timer for turning the boiler on and off. The OASIS gas boiler is equipped with an on and off timer. It works very simply. The user determines at what hour of the day the boiler operates and at what hour it is forced to turn off, thus we have 24 timers, one for each hour of the day. This is convenient, since you do not have to calculate the time minute by minute, which can lead to confusion between timers and failure to start. In the event of a power outage, information about the configured timers will be saved. You only need to reset the local time(s).

We draw your attention to some functions of the OASIS household gas equipment:

in SUMMER mode, the timers do not work, since the heating system is turned off in this mode;
The DHW system is a priority in the operation of the boiler, so setting the timers does not affect its operation.

Overall dimensions of the OASIS wall-mounted boiler, the diameters of the connected pipelines, water pipes, gas pipelines, and coaxial chimney are marked.

Internal structure of the gas boiler OASIS model RT with separate heat exchangers.

Internal structure of the OASIS gas boiler model BM with one copper heat exchanger.

Options for connecting chimneys to the OASIS gas boiler.

Description of the installation of a separate chimney in which carbon monoxide is removed through a separate 80 mm pipe. The air supply for gas combustion in a closed combustion chamber is also supplied through a separately laid pipe with a diameter of 80 mm.

Boiler error codes OASIS RT, OASIS BM. Decoding standard errors on all models of the OASIS gas boiler.

Boilers have relatively recently appeared on the heating equipment market. Positioning itself as a large international corporation created by German investors, Forte occupied a niche in the production and sale of bimetallic radiators. In order to expand the sales market, a step was taken to produce.

Currently, the model range is represented by one type of gas equipment - the Oasis NZR boiler. In order to increase the number of potential buyers, 4 main modifications of this boiler were made.

The Oasis NZR double-circuit gas boiler is designed to heat the coolant in the heating system and provide hot running water. Its general characteristics allow it to be used as the main heating device both in private homes and in small office buildings.

4 boiler models have been developed, which differ in rated power - from 13 to 24 kW. The company's marketing strategy allowed boilers with low power to confidently occupy their market segment. The relative shortage of inexpensive and low-power boilers has become a niche that allows Forte to continue its successful advancement in the market.

Specifications

All models of Oasis boilers are wall-mounted and have the technical characteristics presented in the table:

Technical characteristics of Oasis NZR boilers

Like every type of heating equipment, these boilers have some characteristic design features:

Closed combustion chamber. The flow of air to maintain the combustion process occurs using a fan. To implement this process, a coaxial chimney is provided, consisting of two air ducts - a pipe in a pipe. One (external) provides air flow from the street, and the second (internal) removes gas combustion products to the street.
The heat exchanger is made of copper, which increases its functional properties.
Convenient controls. The process of adjusting and monitoring water temperature, both in the heating system and in hot water supply, is carried out using an electronic panel.
Power modulation with electronic system.
Extended boiler operation protection system for the following cases:

Overheating of water.
Critical decrease (increase) in pressure in the water supply system.
Automatic restart when water stagnation occurs.
Protection of electronic components when electrical voltage drops.
Preventing water from freezing in 2 systems.
The presence of a draft sensor to monitor the process of removing combustion products.

Ionization control of the burner flame.

But the main criterion for our citizens remains cost. It is thanks to a well-thought-out pricing policy that sales of these boilers are growing every year.

However, it is worth noting that in addition to the positive factors, there is some negative, which can be characterized by the phrase - not a very good quality. Of course, this does not apply to all products.

For a modern person, one of the main criteria for choosing a product is customer reviews.

The Oasis wall mounted boiler seems to be working, although there is no water circulation in the system. The return pump heats up noticeably. What is the reason?

The dirt filter is clogged or the tap is turned off somewhere, which prevents the passage of coolant. The circulation pump could also fail.

I would like to know for what purpose is a protective thermal sensor installed in the system?

This component stops the gas supply to the burner when the primary heat exchanger fluid overheats.

We installed the Oasis boiler a week ago. Now at the moment of start the wick burns for five seconds, but the main burner does not support the fire, and because of this the device begins to go out. How is it possible to solve this problem?

Judging by the description, the ignition unit is defective or there is a problem with the burner. Just in case, check whether the phasing was disrupted when connecting to electricity.

The heat exchanger can be easily removed from the boiler using a simple screwdriver. Below is a description of the dismantling procedure. Drain the water from the appliance using the drain tap. Then you need to empty the DHW system. Unscrew the heat exchanger mounting screws and remove it from the frame.

I connected this device at the beginning of August. Presumably after 4 months the DHW circuit stopped working, although the heating mode functions as expected. I tried to turn on the hot water, but the unit only displays the temperature and is not going to produce heating. Help, how to fix it?

Most likely the problem is in the 3-way valve. It requires replacement.

Gas double-circuit boiler Oasis BM-16. Connected to heating and water. The heating works normally, but when hot water is turned on, the indicator (faucet) does not light up. This happened in the fall, but within 2-3 days it fixed itself. At the beginning of spring, problems began, the water began to heat up every once in a while, and in the end it did not turn on at all. Please tell me in detail, can I fix it myself or should I look for a professional?

If the boiler's DHW circuit does not work, then the likely reason is the flow sensor, which is installed in the cold water inlet pipe into the DHW circuit. It represents a turbine that could tilt or become clogged, thereby ceasing to give a signal that water is leaking in the pipe. You can check the condition of the sensor yourself by turning off the water and unscrewing the cold water supply from the unit’s pipe. Make sure the sensor is not jammed and can rotate freely.

Who has encountered such a malfunction of the BM-16 boiler? The water in the heating system, shown on the display, heats up to the set temperature, turns off, goes into circulation, resets the temperature, but then does not turn on.

In your case, you need to understand the problem in more detail. Depending on the model, certain actions are possible.

A wall-mounted boiler Oasis NZR-13 was installed. The problem is the following: I set the heating temperature to a maximum of 80 degrees. The heating outlet pipe is very hot, the radiators are slightly warm. I invited a specialist from the service center. He looked and said that a lot of gas is supplied, the unit quickly gains temperature and turns off, but does not have time to flush out the water in the system (pump at third speed). Now he is trying to reduce the gas pressure, and something is not working. Maybe you can tell me where and how this is done?

Most likely, scale has formed in the heat exchanger, which leads to boiling water. The second reason is wear of the pump, weak rotation of the impeller, or simply dirt. The heat exchanger and pump need to be checked and cleaned.

Heating boiler zrt 24 kW. When cold, when first started, it works fine, but with a characteristic noise, as if there was air in the system or like it was boiling. Subsequent warm-ups with the same noise, but the temperature quickly rises and it goes out. DHW is working fine. Explain what the reason could be?

Most likely, the reason is in the pump - the impeller is jammed. Unscrew the plug and try turning the impeller by hand. Another reason could be scale in the heat exchanger.

Heating boiler Oasis zrt 24. When you turn on the hot water, not only does hot water flow from the tap, but the radiators also heat up, and the pump makes a slight noise. All this is in summer mode.

Most likely, the problem is in the operation of the three-way valve and servomotor. Check whether the servo rod is fully actuated when opening the hot water tap. There may be a malfunction of the servo drive or souring of the rod.

Model ZRT-18. Water is leaking from the pressure valve. Does anyone have any ideas or what did they do to fix the leak. In operation for 6 years.

Unscrew and check the leaking valve and replace it if necessary.

The wall-mounted gas boiler Oasis 18 operates at full capacity and does not turn off. The indicator on the display shows an open tap icon, so the gas supply is not turned off, unless manually.

Perhaps the flow sensor is shorted, or the rod in the three-way valve is stuck. Check the flow sensor and stroke.

Oasis zrt 24. When igniting, there is a problem (DHW mode or heating - no difference): the relay switches on and off with a crackling sound, even when a flame appears, and only after a few seconds of burning it burns evenly, without failures. Sometimes it doesn’t light up on the first try, but I’ve never made an error yet. The idea is to test the serviceability of the flame control sensor and the serviceability of the pressure switch.

It is necessary to check the flame ionization sensor, and also clean the ignition electrodes and burner nozzles.

The problem is with the erko dwp 15-50 a circulation pump. The pump volute, plastic, leaked. How to remove the pump?

The pump needs to be replaced. To dismantle the circulation pump, you need to remove the front panel of the unit, unscrew the two screws from the bottom of the pump and remove the two clips on the inlet and outlet pipes of the pump.

Gas wall-mounted boiler Oasis 24 kW. The house (120 square meters) has heated floors. The floors take a long time to warm up, but then retain heat for a long time. The circulation pump turns on every 5 minutes, but there is no point in this, since the burner turns on no more than twice an hour. Please tell me, is it possible to change the pump activation interval? By the way, I’m happy with the boiler, I switched it to propane, it works well, in cold weather the consumption is about 2 cylinders for 6 days. The only thing was that I had to install an additional expansion tank, because when heated, the pressure rose unacceptably and had to be reset to normal, but even after the coolant cooled slightly, the pressure dropped below normal, and it did not work well. I placed 2 cylinders at low pressure in parallel. The cylinders have stopped freezing and are now burning out completely.

Check the service settings - they must correspond to the values of the underfloor heating system and liquefied gas. The pump works correctly, achieving uniform heat transfer by passing the coolant. It is impossible to change the interval at which the pump is turned on; it is only possible to set it to continuous operation.

The Oasis VM-24, double-circuit boiler is in operation. There was a problem like this. When the pump periodically turns on, the turbine turns on along with it and runs for about 30 seconds, then turns off, and the pump continues to drive water. Ignition does not occur because the water in the system has not yet cooled down to the set point. With a circulation pump, everything is clear why the turbine turns on. This doesn't happen often, but I still noticed it.

Turning on the turbine independently does not have any negative impact on the operation of the unit. This can happen when the hot water supply circuit is turned on, which is normal, or due to the fact that an unauthorized turn-on signal is received at the turbine starting capacitor. This can occur due to stray currents, the presence of which can be diagnosed by measuring currents on the gas pipe. If there are currents, it is necessary to install a dielectric coupling.

Wall-mounted double-circuit boiler Oasis VM-24 kW. I bought a house, this unit was installed, it would soon be cold, and the heating was terrible. It runs once, turns off, 2 batteries are hot and the other is warm. Then it turns on only after 4-5 hours, and the batteries quickly cool down. It's +10 outside, and we're already freezing. I thought the thermostat was broken, I disconnected the wires, then connected them together, but it didn’t turn on. Why dont know. In theory, it should have turned on immediately and warmed up. And now a strange nasty squeak appeared. Tell me how to fix everything, please?

A characteristic squeaking sound can come from the expansion tank (it bleeds air from the spool), or from the circulation pump, which needs to be checked and the air bleed through the central plug.

In the VM-16 boiler, water is boiling at the DHW inlet, the flow sensor has burned out, and steam is leaking from the American connection. Gas workers said that these models have this feature.

The cause of such a malfunction, overheating and failure of the DHW sensor could be a heat exchanger that became clogged and failed.

I bought a gas boiler Oasis BM-24. I want to switch it to bottled (liquefied) gas. What pressure should be set? And what other settings need to be changed in the service menu? I already bought the injectors. And another question: should I change the pressure using a pressure gauge or not?

To switch the boiler to work with liquefied gas, you need to replace the nozzles and change the FA parameter in the service menu, replacing 0 with 1. Yes, the gas pressure on the burner should be approximately 80 mm (maximum) and 30 mm (minimum). The pressure is measured at the gas valve fitting.

Model NZR-24. The problem is that it turns off automatically. That is, without errors and for no apparent reason, the unit turns off spontaneously, the display shows OFF. You come up, press the power button, and it continues to work for some time. Then it turns off again. The intervals are always different. Maybe they turn off every hour, or maybe they work normally for a week. It is noticed that it turns off when ignited, that is, it tries to ignite, but something does not work out for it and it turns off. The spark seems normal, gas is flowing. The network is connected via an uninterruptible power supply (but I tried without it - the same thing).

Is there a dielectric coupling on the gas pipe leading to the boiler? If there is no clutch, then we advise you to install it, but if there is one and the unit works like this, then it is possible that the problem is in the control board and it needs to be replaced.

I have a gas boiler Oasis VM-20. The house is new, everything is connected except gas. I decided to fill the system. I unscrewed the plug on the pump, opened the heating taps, and turned on the cold water. And I turned off the feed tap, but no water flowed into the battery system. How do I fill my heating system with water?

Most likely the problem is related to an incorrectly installed heating system, or incorrect installation of the boiler. Check the heating system and all connections or call a technician.

Please tell me, we want to install a wall-mounted boiler in the apartment and are wavering between Oasis BM-16 and RT-16. The first one has a separate heat exchanger, and the second one has a bithermic one. The rest of their parameters are the same. What's the difference? Which one is better to take? Apartment 2/2 brick house, 68 sq. m.

The first model BM-16 has a bithermal heat exchanger, and RT-16 has two separate heat exchangers. In boilers with a bithermic heat exchanger, there is no separate secondary heat exchanger responsible only for the DHW circuit, which makes them cheaper, but the heat exchanger of such models is more sensitive to water quality and if the water is hard, with a high salt content or from a well, the bithermic unit clogs faster. In such cases, we recommend using RT models with two separate heat exchangers.

Tell me who knows. I can’t get the ZRT-18 boiler to work with external control, that is, I put a jumper on the terminals, remove it, but it still works according to the internal temperature settings.

Initially, there is a jumper between the terminals for connecting the room temperature sensor. You must first remove this jumper (bite it) and only then connect the room temperature sensor.

Please tell me why the hot water on the Oasis VM-18 boiler is either boiling water or cold? The settings do not help, I also changed the amount of water.

Check the settings in the service menu, the gas pressure leaving the burner should be set to max-12 mbar, min-2 mbar, the heat exchanger could also be clogged.

The wall-mounted gas boiler Oasis nzr 16 cuts off the gas burner for a split second when supplying hot water or heating. No errors are displayed and it continues to work. What is the reason?

A short-term burner shutdown is possible for several reasons, for example due to a gas valve. It is possible to find out the reason more precisely only on the spot. Such operation is not a malfunction and does not affect its efficiency and performance.

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OPERATION AND REPAIR OF BOILERS
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In this article we will look at the Oasis gas boiler of the NZR series (available in 4 modifications). The number after the abbreviation “NZR” indicates the power of this boiler. For example, the Oasis NZR 13 model has a thermal power of 13 kW.

Since all modifications have similar characteristics, we will denote their numerical expression in a range.

We have a certain residential or administrative area, which has its own dimensions. Managers of household appliance showrooms guide buyers towards them when choosing a boiler. But at the same time, the features of the building or apartment are absolutely not taken into account:

What material is the building made of? For example, private houses made of profiled timber are considered warm, and concrete “Khrushchev” buildings in this regard cause a lot of criticism;
how is it insulated? After all, even in city apartments there are differences. Someone does, for example, internal insulation, glazing of a loggia or balcony;
year of construction (applies to apartment buildings). You need to understand that in different periods there were significant differences in construction technology, and the service life reduces the quality of thermal insulation of premises. Consequently, a more powerful boiler is needed;
location of the house. It can either be “open” to all winds, or, conversely, blocked by other houses, a forest belt, a hill, and the like. The climate in the area must also be taken into account.

The approximate power that the boiler should have is determined at the rate of 10 kW per 100 m 2 of room (ceilings of standard height). But if any mechanism is “driven” to the limit, then it will not work for long. That is why the power calculated in this way is increased by a third (the required reserve).

If a multi-storey building is built using modern technologies, and a private one is well insulated, then you can be guided by the ratio (5 - 7) kW per 100 m2. For old or poorly insulated buildings (“Khrushchev-era buildings”), the “formula” (15 – 20) per 100 m2 is used.

Transcript

1 Gas wall-mounted boilers Oasis 1
2 Product range Model RT with separate heat exchanger system 13, 16, 18, 20 and 24 kW. Model BM with bithermic heat exchanger 13, 16, 18, 20 and 24 kW. 2

3 Technical characteristics 3

4 Internal structure of boilers, RT series Designations: 1. Hole for coaxial pipe (smoke outlet) 2. Hole for coaxial pipe (oxygen inlet) 3. Fan 4. Overheat sensor (thermal relay) 5. Main heat exchanger 6. Burner 7. Servo drive 8 . NTC temperature sensor of the heating circuit 9. NTC temperature sensor of the DHW circuit 10. Three-way valve 11. Gas valve 12. Make-up tap 13. Circulation pump 14. Circulation pump plug screw 15. Pressure gauge 16. Water pressure sensor 17. Air exhaust valve ( automatic) 18. Relief valve 19. Ionization ignition electrodes 20. Air pressure switch 21. Air supply hole 22. Expansion tank 23. Secondary (plate) heat exchanger 24. Condensate trap 4

5 Internal structure of boilers, BM series Designations: 1. Hole for coaxial pipe (smoke outlet) 2. Hole for coaxial pipe (oxygen inlet) 3. Fan 4. Overheat sensor (thermal relay) 5. Bithermal heat exchanger 6. Burner 7. Temperature sensor NTC heating circuit 8. Temperature sensor NTC DHW circuit 9. Gas valve 10. Make-up tap 11. Circulation pump 12. Circulation pump screw-plug 13. Pressure gauge 14. Water flow sensor (flow meter) 15. Air exhaust valve (automatic) 16. Cold water NTC temperature sensor 17. Pressure sensor 18. Condensate drain 19. Air pressure switch 20. Air supply hole 21. Expansion tank 22. Drain valve 5

6 Degrees of protection for Oasis boilers Anti-block system - protection of the pump impeller from acidification Boiler protection from freezing does not allow the coolant to freeze at negative ambient temperatures Automatic start of the boiler in the event of an emergency power outage Automatic start of the boiler in the event of an emergency gas outage 6

7 Additional functions of Oasis boilers The heated floor allows you to connect the boiler to the “Heated Floor” system The timer allows you to set the individual boiler temperature for each hour of operation The self-diagnosis system allows you to determine the exact malfunction of the electronic parts of the boiler 7

8 Installation of the boiler Commissioning and commissioning work must be carried out only by a specialized organization authorized to carry out gas hazardous work 8

9 Warranty obligations The warranty for Oasis gas boilers is 24 months from the date of launch, but not more than 30 months from the date of sale. Warranty obligations apply subject to the following requirements: - Commissioning work must be carried out only by a specialized organization that has permission to carry out hazardous gas work - Maintenance of the boiler must be carried out at least once a year - Mandatory presence of a voltage stabilizer - Mandatory presence of a dielectric coupling - Mandatory presence of grounding 9

10 Additional warranty for Oasis home boilers Legal. address: Rostov-on-Don, st. Krasnoarmeyskaya 142/50, off. 321 Fact. address: Rostov-on-Don, Budennovsky Ave. 62/2, lit. M tel./fax: +7 (863) Dear Partners! In order to increase the level of service to end consumers, as well as to stimulate requests for installation and maintenance services through authorized service centers, it decided to launch the “2+1 year additional warranty” promotion for gas wall-mounted boilers t/m “Oasis”. additional warranty When installing a gas wall-mounted boiler “Oasis” by an authorized service center, the consumer receives an additional year of warranty Conditions: Fill out an application for installation by registering on the website or by calling the hotline: Within 1 business day, a technical specialist will contact the consumer. Forte service to coordinate installation conditions If there is a mark from an authorized service center about a) installing the boiler and b) undergoing its annual maintenance during the first two years of using the device, the consumer receives an additional third year of service as a gift 10

11 Additional warranty for Oasis home boilers Legal. address: Rostov-on-Don, st. Krasnoarmeyskaya 142/50, off. 321 Fact. address: Rostov-on-Don, Budennovsky Ave. 62/2, lit. M tel./fax: +7 (863) Procedure: receiving an application from the buyer, transferring to him the contact information of the service center in the region, the service center installs the boiler, concludes a service agreement with the consumer, ForteHome specialists make an annual call to the consumer with a reminder the need to undergo maintenance, after two years of warranty service, the consumer provides a scan of the passport with a mark on the maintenance completed during two years of warranty service, after which he receives a certificate for the third year of warranty service. Sincerely, Technical Director of Forte Holding GmbH LLC Prosvetov A.S. eleven

12 Universal smoke removal system SEPARATE SYSTEM COAXIAL SYSTEM — Pipe diameters: 100/60 mm — The total length of the pipe should not exceed 3 meters — The end of the pipe should be lowered at an angle of 5 — The pipe should protrude beyond the plane of the wall by cm. — Pipe diameters 80 /80 mm - The total length of the pipes should not exceed 10 meters - The end of the pipe should be lowered at an angle of 5 degrees - The pipe should protrude beyond the plane of the wall by cm - Each bend 90 is equivalent to 1 m of pipe, each elbow 45 0.5 m of pipe 12

13 Operation on liquefied gas When switching to liquefied gas, it is necessary to replace the nozzles on the gas burner and set the value of parameter FA-01 13

14 Operation of the DHW circuit on boilers, RT series 1. Stroke sensor, 2. Three-way valve stem, 3. Flow sensor turbine, 4. Flow sensor housing. 14

15 Operation of the DHW circuit on boilers, BM series Flow sensor 15

Characteristics of Oasis boilers

The Oasis boiler is a gas boiler, but it cannot operate on liquefied gas. All models are designed only for natural gas - conversion to liquefied gas is not provided and is impossible. Due to this, the boiler can only be used in buildings connected to the gas supply system.

In relation to the “average” structure, the Oasis boiler of various modifications is capable of heating the area (m2):

NZR 13 – up to 100;
NZR 16 – up to 120;
NZR 20 – up to 160 – 180;
NZR 24 – up to 200 – 220.

The volume of the membrane (expansion) tank of the gas “Oasis” is 6 liters. This must be taken into account if the boiler is selected for a private home. You may have to install an additional tank (if there is a large volume of coolant).

The boiler heat exchanger is made of copper and can withstand large hydraulic shocks, which is important for apartment buildings where the heating system is pressure tested before each season.

All Oasis gas boilers are double-circuit, so in addition to heating they also provide hot water supply. Depending on the automation settings, the water temperature can be from 36 to 60 0 C. The productivity of the DHW circuit is 10 l/min (for the NZR 24 model - 12 l/min) - quite sufficient to satisfy all the domestic needs of a family of 5 - 7 people.

Basic faults

What to do if an error appears on the display? How to fix the situation? First you need to decipher the meaning of the symbols on the screen, and only after that start looking for a breakdown.

Error codes and solutions

Let's look at what the symbols that the boiler shows mean.

E1 - problems with ignition, no ignition. What could be the reason:

No fuel supply . Turn the shut-off valve; it may not be fully open. If there is high or low pressure in the gas line, you should contact the repair service;
The contacts are loose and clogged . Check the connections from the control module to the ignition unit. Tighten the wiring. If the contacts are oxidized, clean them and reconnect;
The control board is faulty . It is better to entrust diagnosis and replacement to a specialist. But you can inspect the part yourself, look for burns and damage.

The ignition electrode does not work . This happens if the part has moved and is located far from the burner. Remove the casing, inspect the elements and return the electrode to its place. Additionally, clean it with a wire brush. If the burner does not light after this, install a new electrode.

E2 - the fan has been running for 8 seconds, but the pressure switch does not close. What does it mean:

No traction . The pipe or chimney is clogged. To check, light a match and hold it to the inspection window. The flame deviates to the side - there is draft, it burns evenly - no. You can hold a sheet of paper to the ventilation hole. With normal traction, it will tighten, and if the passage is clogged, the leaf will fall.

In this case, you need to clean the chimney on your own side, and call utility workers from the street to clean it. Open the combustion chamber. You will see that there are two tubes connected to the manostat (pressure regulator), which also need to be cleaned;

The air relay is broken . You can verify that a part is faulty using a tester;
The fan does not work . The part is inspected for damage. There are tubes connected to it that may have melted and need to be replaced. Then start the boiler and close the manostat contacts. If the burner lights up, the manostat is broken; if not, the main unit is broken.
Electronics problems . Perhaps the wiring contacts have come loose or the insulation has been damaged. All elements are inspected and tightened.

E3 - the input DHW temperature sensor has failed. Diagnose the sensor and wiring. Replace faulty parts.

Installation and connection

The Oasis boiler is a wall-mounted model. Unlike floor-standing devices, it does not require boiler room equipment; it can be installed even in small rooms.

Important! A gas boiler cannot be installed in living rooms or where there is excess humidity. Most often it is installed in the kitchen.

Fastening is done either with anchors or large screws, since the weight of the boilers is comparable to the weight of a regular gas water heater, and the dimensions are approximately the same.

The described gas boilers are produced with a closed combustion chamber. What does this mean? To ensure the combustion process, an air flow is required. A device with a closed chamber in this regard is isolated from the room in which it is mounted. Air is supplied from outside using a fan equipped with the boiler.

Therefore, before purchasing the Oasis product, you need to think about installing a special coaxial chimney. For private houses this is not a problem, but installation in an apartment will require specialist advice. Although such models are considered safer and more environmentally friendly.

Troubleshooting that prevents the gas heater from igniting

There is a turbocharged gas water heater with electric ignition. When the hot water is turned on, the heater clicks, but does not light up. An electric discharge is heard and the fan turns on.

The first step is to carry out an inspection; to do this, remove the column cover. It is fastened with four bolts: two from below, two from above. We also remove the knobs for adjusting the flame, temperature, and winter-summer mode. Upon inspection, everything seems intact, the wires are not burned anywhere, water is not leaking anywhere.

The principle of operation is that when a water flow appears, the gas valve is activated, an electric discharge is created, the gas is ignited, and at the same time the fan is turned on to draw waste combustion products outside. If the water pressure is insufficient or the hood does not work, the gas goes out and the column turns off.

So, open the tap and see what happens. Water rustled through the heat exchanger tubes, the electrodes gave a discharge, the fan turned on, but the gas did not ignite. Let's check if the relay (microswitch) is working, which is activated when there is sufficient water pressure and opens the gas supply valve. To do this, turn the tap again, the relay tongue should move away.

It works, which means the pressure is sufficient for the gas water heater to operate. Now let's check the operation of the gas valve. To do this, use a screwdriver to move the same tongue away without opening the water. If there is a spark at the electrodes and the fan starts working, then the gas valve is working.

The fault was found quite quickly; the ignition electrode did not produce a spark. There are only two of them: extreme ones. The one in the center is the control one; if there is no flame, it turns off the gas supply.

conclusions

Let's summarize all of the above:

The Oasis gas boiler is perfect for any city apartment or small private house connected to the gas main. It is also advisable to use it for small industrial or administrative buildings;
Provides both heat and hot water;
“Oasis” can be installed even in a small, non-separate room;
Installation of a coaxial type chimney is required. When connected to a common house smoke exhaust system, the boiler must be provided with a separate air flow.

It should be added that the manufacturer provides a 2-year warranty on its products.