Gas boilers Oasis - features, characteristics, malfunctions

Other faults

A situation may arise when the boiler stops heating water, that is, cold water flows from the tap when turned on. Most likely, the problem lies in a malfunction of the turbine, which does not transmit a signal to the sensor, then the flame does not ignite and, as a result, the liquid does not heat up.

The turbine cannot be repaired and needs to be replaced. To prevent a similar situation from happening again with a newly installed turbine, we recommend purchasing and installing a high-quality fluid filter.

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:

1. 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;
2. 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;
3. 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;
4. 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.

Model specifications

The manufacturer offers the buyer five models of Oasis wall-mounted gas boilers.

How the Oasis boiler works

The devices of this manufacturer are dual-circuit. This means that the water heater can provide not only hot water at the tap, but also heating in the room. The heating temperature is from 35 to 60 degrees, the average productivity is 10 liters per minute.

The boiler is equipped with two heat exchangers. One of them is responsible for providing water for heating batteries, the other for hot water supply (DHW). Accordingly, fuel consumption and heating waiting time in the summer are reduced.

Combustion products are removed forcibly. Closed chamber and ensure automatic and safe operation. Flame, gas supply, and flow sensors are installed for monitoring. There is also a safety valve that is activated when the pressure rises.

It can't do without troubleshooting. The equipment is equipped with a self-diagnosis system. In the event of a malfunction, an error is displayed on the display, the meaning of which is indicated in the instructions.

Split system Oasis OT-18 instructions

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• Description
• Characteristics
• Accessories
• Instructions
• Reviews +1000 bonuses for review!

Split system Oasis OT-18 is a modern and functional solution for your apartment!

Control system

Using this air conditioner is very easy thanks to a convenient and intuitive control system. There is also a remote control and an on/off timer, which is very convenient.

Installation

This is a cooling equipment divided into 2 main parts: outdoor and indoor units. The outdoor (external) unit is usually installed on the facade of the building. It is designed to remove warm air from the room. The indoor unit of a split system can be located almost anywhere in the room.

Safety

The air conditioner is equipped with a multi-purpose self-diagnosis system and a protection system against extremely high (low) temperatures.

Peculiarities

The innovative design and scratch- and dust-resistant coating will not leave you indifferent. The air conditioner has efficient aerodynamics and is reliably protected from voltage surges.

Efficient heating

Operating the air conditioner in intensive heating mode allows you to effectively heat the room during the transitional heating period - the time of year when the central heating system is not working.

Noise level

One of the main criteria for choosing an air conditioner is the noise level, so this model has almost silent operation.

Energy efficiency

Energy class A allows you to consume less electricity, which saves your budget.

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The manufacturer's warranty is usually set for one or two years, but for expensive electronics this is not always enough.

Purchasing an additional guarantee certificate allows you to:

• 1. take into account non-warranty risks, such as non-production breakdowns as a result of power surges, fire, flooding, theft, robbery, robbery, natural disasters, supplementing the warranty options from the manufacturer;
• 2. increase the duration of the factory warranty.

You can independently choose the time period for which you want to extend it - it can be 1, 2 or 3 years.

Why does the equipment manufacturer establish a warranty of one, two, or in very rare cases, three years? It's simple. The longer the equipment operates, the higher the likelihood of breakdown. But you don’t throw away your refrigerator, washing machine or laptop immediately after the manufacturer’s warranty expires? Of course not. What if the equipment breaks down after the warranty has expired? You have to pay for repairs out of your own pocket. And often it's a lot of money. The problem will be solved by the “Additional Guarantee” certificate.

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.

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.

Oasis BM-18

• Heating boiler type: gas
• Number of circuits: dual circuit
• Maximum heating power: 18 kW
• Heated area: 180 sq. m.
• Installation method: wall mounted
• Burner type: gas
• Combustion chamber: closed
• Non-volatile: No
• Auto-ignition: Yes
• Built-in boiler: No

Here you can watch a video review of the Oasis BM-18. Find out the characteristics, read reviews about the Oasis BM-18.

Internal structure of Oasis boilers

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

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.

Chinese doesn't mean bad

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.

The Oasis gas boiler can only operate on natural gas; conversion to liquefied gas is excluded; accordingly, it can be installed in rooms connected to the central gas main.

These devices are double-circuit, designed to heat a room and supply it with hot water for domestic needs. The heating temperature of the liquid ranges from 35-60 degrees, the hot water supply capacity is 10 liters per minute.

Equipped with a closed combustion chamber, which significantly reduces gas consumption. The operation of the burner is controlled automatically; there are photo sensors on it that monitor the presence of gas. A coaxial chimney is used for smoke removal; the air required for the combustion process comes from the street.

The design provides two heat exchangers, one for the heating circuit, the second for heating the DHW liquid. Thanks to this, the heating time of the liquid is reduced, and it is also possible to use the boiler in the summer.

It is possible to connect to a room thermostat, which is not included in the package; it must be purchased separately. For safe operation, there are relief valves that are activated if the coolant temperature exceeds the permissible limits. Also, for safe operation, there are flow sensors that monitor the pressure in the heating circuit; in case of non-compliance with the standards, the operation of the system is blocked.

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

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

E4 -

The DHW output sensor is broken. Proceed in the same way as in case of E3.

E5 -

The heating sensor does not work. Similar actions.

E6

- there is no flame. What to do:

• Restart
  . To do this, open and close the mixer several times until ignition occurs. Air has probably accumulated inside, which interferes with normal ignition;
• Pull the contacts to the connectors
  , make sure the insulation is intact.

E7

- low pressure in the line. What could be causing the problem:

• Too little water
  . Perhaps one of the connections has started to leak. Apply a dry cloth to the joints to check for leaks. Seal the connection, tighten the nuts tighter and eliminate the leak;
• The pressure in the distribution tank is incorrect.
  It is necessary to adjust the settings as indicated in the instructions for the specific model. When heated, the liquid expands, causing the pressure to increase. Because of this, the safety valve is activated and releases excess water.

E8 -

the water overheats. What is the reason:

• The heating valve is closed
  , you need to open it;
• DHW or heating systems overheat
  . Diagnose the operation of the bypass valve, as well as the degree of hot liquid flow.

E9 -

The pressure in the system is not normal. The pump is broken, so the burner may not light.

• The pressure in the line
  must be at least 0.1–0.15 Bar;
• Remove the pump.
  Clean its parts from blockages and rinse under running water. Inspect the components for damage, especially the blades.

Thermal sensor is faulty. Diagnostics and replacement are carried out.

We have examined all the errors characteristic of Oasis gas boilers. In addition, users are faced with a malfunction such as lack of heating: when opening the mixer, there is no hot flow. This indicates a turbine failure. It cannot be repaired; it is better to install a new one.

Before starting work on equipment, turn off the gas and water supplies. If the error code does not disappear from the screen after all the efforts, contact a specialist. You should not carry out independent work on the gas line - this is dangerous and can lead to an accident.

Reviews

There are complaints about poor-quality water heating after installation of the structure, when the liquid temperature rises to 40 ° C, not higher. As a rule, the manufacturer does not indicate in the instructions how to deal with this problem.

Experts advise not to carry out any repair work yourself, but to immediately call a specialist / call the service center. Most likely, your boiler will be exchanged under warranty or the necessary repairs will be made.

When purchasing a heating unit, it is important to carefully read all technical characteristics. If the boiler is selected incorrectly, you risk freezing in your home during the cold season. This is associated with some negative customer reviews of the Oasis 24 kW boiler. Users claim that the expansion tank for the heating system of a 180 m² house is not enough. Some solve this problem by installing an additional remote.

There are complaints about the loud operation of the turbine, but in general, users are satisfied with the unit, its compact size, modern design and shape.

Review of gas boiler Oasis VM 16

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.

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.

About the manufacturer

The Oasis company produces equipment that is designed for autonomous heating of premises. The product range includes heating boilers, radiators, instantaneous water heaters, and circulation pumps.

The company has Chinese roots, but in the store you may be presented with Oasis products as Russian. The brand is quite famous in Asian countries, but began to appear in Russia relatively recently.

Chinese gas heating boilers, with regard to technical parameters, are assembled very thoughtfully, this is confirmed by customer reviews.

They can operate on both natural and liquefied gas.

Gas wall-mounted boiler Oasis BM-24 bithermic

Reviews of Oasis RT-24

Advantages: Deception stickers on the boiler

Disadvantages: The boiler is wobbly, there is no guarantee, the circuit board melted and the pump started smoking.

Comment: there is no guarantee, the boiler is out of order, no one wants to take it to repair it, they are just burning that we won’t even pick up the oasis, calls to the service center are generally pointless.

Disadvantages: Price, build quality, noise, Chinese pump, board, heat exchanger leaks, board burned out

Comment: The boiler is cheap from China, bought because of the price, returned after a month of work with screams and fights, the pump burned out, the circuit board burned out, the heat exchanger leaked. I read the reviews here and realized that they were all custom made. It's a pity that you wasted money, time, and frozen batteries.

Comment: We spent a long time choosing a gas boiler for our newly purchased apartment, and since the budget was not particularly large, we chose from economical options. As a result, we came across the Oasis rt-24 model, and we were not mistaken in an excellent choice. The boiler is small, convenient in size, and the design fits well into our interior. We have been using it for two years now and are satisfied with the heating and constant hot water. The compact size is a nice plus in our small apartment. The installation itself was entrusted to specialists. Adequate price allows you to purchase a high-quality and convenient boiler. I consider the manufacturer to be a professional in his field.

Advantages: Price, although there are plenty of such Chinese boilers

Disadvantages: We were left without heating after the new year, it constantly gives errors, the chimney sensor was replaced, the heat exchanger and valve were leaking. Starts up very loud, terrible design.

Comment: We were left without heating after the New Year holidays, the boiler died. We barely found spare parts to bring from Rostov. We waited a week, the batteries had to be defrosted. It's better to overpay and buy something better. I do not advise.

Advantages: safe, easy to use, functional

Comment: The purchase of the boiler turned out to be a little unplanned. My previous boiler suddenly broke down, and I urgently needed to buy a worthy replacement. I chose this boiler because it met all my requirements and performed all the necessary functions. It has a power indicator, thermometer, pressure gauge, auto-ignition, programmer, in general, everything I need. The boiler also has a modern security system.

Advantages: reliable, powerful, productive, multi-level security system.

Disadvantages: worked for 3 heating seasons without any complaints.

Comment: If you need a reliable, powerful and productive boiler with a modern multi-level security system, high efficiency, which will never let you down and will cope with its functional purpose perfectly, then I recommend you the Oasis RT-24. I have had this boiler for 2.5 years (3 heating seasons) and during the entire period of operation of the boiler I have no complaints about it.

Advantages: multi-level security system

Comment: A good gas boiler, which I purchased in the fall of the year before last. I chose a dual-circuit one so that it could be used for both heating and hot water supply. Quite powerful, heats the entire area of ​​my private house. Energy consumption is insignificant, and gas consumption is moderate. Reliable boiler safety and protection system.

Oasis RT-24

• gas convection boiler
• power 24 kW
• heating area 240 sq. m
• double-circuit
• closed combustion chamber
• wall
• expansion tank
• for single-phase network

Average rating of Oasis RT-24 - 3.29 There are 7 known reviews of Oasis RT-24

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