What is a gas double-circuit wall-mounted boiler Baxi + its advantages and disadvantages

Are you considering replacing your house’s heating system? A gas double-circuit wall-mounted boiler is something you should think about, and the Baxi model is a good one. This boiler heats your house and provides hot water, all while saving space and being efficient. Let’s examine the features, benefits, and possible drawbacks of the Baxi gas double-circuit wall-mounted boiler.

Due to its small size, the Baxi gas double-circuit wall-mounted boiler is well-suited for homes with limited space. In contrast to conventional boilers, which need different units for hot water and heating, the Baxi combines the two uses into a single, streamlined wall-mounted unit. This reduces the need for space and makes maintenance and installation easier.

The Baxi boiler’s effectiveness in heating water is one of its best qualities. It guarantees that you always have hot water on demand, even during periods of high usage, thanks to separate circuits for heating and hot water. This efficiency maximizes the use of gas for heating, which can result in lower energy bills for you.

Like any appliance, the Baxi boiler has some things to keep in mind. The size of the boiler’s hot water tank might be a constraint, depending on how frequently your home uses hot water. You may need to carefully consider the tank size if you have a large household with high hot water demand to make sure it meets your needs.

To sum up, the Baxi gas double-circuit wall-mounted boiler provides many homes with an effective and room-saving solution for their heating and hot water needs. This heating system is a popular choice for homeowners who want to upgrade their systems because of its energy efficiency and compact design. To ascertain whether the boiler’s features suit your needs, it is necessary to evaluate the unique requirements of your home.

A gas double-circuit wall-mounted boiler Baxi	is a type of heating system that provides both hot water for taps and heats the home.
Advantages	include space-saving installation on walls, efficient heating, and continuous hot water supply.
Disadvantages	may involve higher initial cost, maintenance needs, and dependency on gas supply.

Double-circuit boilers from Baxi

Since double-circuit installations are the most practical and effective for private home systems, Baxi manufactures a lot of them. These installations’ design and operating principle are essentially the same as those of general design guidelines.

The total authenticity of the parts and components that prevent substitution with other elements is a characteristic of Baxi equipment. The manufacturer takes great care to protect installations from outside influences, and they have developed a system that allows all boiler components to be monitored and self-diagnosed.

Adaptation to our nation’s technological conditions, low or unstable gas pressure, and power supply network voltage fluctuations are extra bonuses.

The only things that separate wall-mounted and floor-mounted samples from one another are the placement of the connecting pipes and, in some cases, the type of heat exchanger.

This is a succinct summary of your article’s main thesis: As we investigate the Baxi gas double-circuit wall-mounted boiler, we learn about its features, advantages, and disadvantages. This space-saving heating solution is perfect for homes with limited space because it effectively provides both hot water and central heating. Though it is praised for its convenience and energy efficiency, prospective users should consider these benefits against the initial cost and maintenance requirements. Come explore what makes this boiler unique among home heating options with us. In an effort to be clear and understandable, this statement highlights the emphasis on functionality, benefits, drawbacks, and suitability for various households.

How they work

Private home heating systems can be designed to heat only (single-circuit) or to heat and supply hot water (double-circuit).

Double-circuit boiler design is an intricate model of a single-circuit unit that comes in two flavors:

• With installation of a secondary heat exchanger.
• Using a bithermal heat exchanger.

The primary heat exchanger’s heated coolant is transferred to the secondary heat exchanger in the first design option. The hot heating agent is fed to the analysis points after passing through a secondary plate heat exchanger, which converts some of the heat into cold water.

The bithermic heat exchanger and a conventional unit have the same appearance. It all comes down to the intricate cross-sectional shape of the tube, which has another one installed inside of it, which resembles a rhombus. Hot water travels along the inner, diamond-shaped cavity while the coolant travels along the upper portion of the formed cavity.

Such a unit has a much higher efficiency than a traditional plate device, but cleaning and maintenance are very challenging. A water softener or filter is necessary for boilers that use bithermic heat exchangers.

Two heat exchanger designs are thought to be more dependable because they require less upkeep and cleaning.

It makes sense to favor installations with simpler, quicker maintenance procedures given the erratic quality of water in water supply systems and the widespread practice of drawing water from personal wells.

Advantages and disadvantages

The following are some benefits of Baxi double-circuit boilers:

• Organization of heating and hot water supply using one installation without the need to connect additional devices.
• High-quality assembly, compliance with all European standards.
• Environmentally friendly equipment.
• Adaptation to Russian technological conditions and climate characteristics.
• The ability to independently determine and signal the occurrence of failures or failures of installation components.
• Economical, relatively low gas consumption with efficient and active work.

Drawbacks are taken into account:

• Dependence on the availability of electricity, on water quality.
• High cost of boilers and spare parts.
• Inability to replace parts with analogues from other manufacturers.

With rare and sporadic exceptions, every installation of this type has both benefits and drawbacks built in.

What series and models are dual-circuit

Baxi offers a number of dual-circuit unit series.

Among them are:

• Slim. A series of floor-standing boilers with a cast iron primary heat exchanger, the power of which ranges from 15 to 62 kW. They have the ability to switch to conventional heating mode and to a heated floor system. Full set of functions, possibility of remote control using a remote control (purchased separately).
• Nuvola. Wall-mounted boilers with a power of 24, 28 and 32 kW with an open or closed combustion chamber. Equipped with a removable control panel that can be installed in a convenient place. A special feature of the series is a heating tank with a magnetic anode, which allows you to work with hard water without harmful effects on the internal surfaces of pipelines and containers.
• Luna. The series is represented by models with a power of 24,25,28 and 31 kW. Boilers in this line are the most expensive, but user ratings are not the most flattering. With a large set of functionality, there is a lack of design and frequent failures of various components.
• Eco. There are two series, 4 and 5 generations with a closed turbocharged burner. The power of the units is 10, 18 and 24 kW, the presence of a fully functional primary heat exchanger and a stainless steel plate secondary. It is noteworthy that all boilers are the same design, only in different models the power is limited by software.
• Main. High-quality boilers with compact body sizes, digital display, wide range of capabilities. The power of the models is 15, 18 and 25 kW. All units are equipped with a built-in water filter. The main feature of the models is a bithermal heat exchanger, which has high heating efficiency and allows for significant fuel savings.

The only ways that Baxi boiler models and series vary from one another are in small details. They all share a similar design and equipment.

Specifications

Now let’s examine the boiler technical characteristics table:

Characteristic	Slim	Nuvola	Luna	Eco	Main
Efficiency	90%	92.9%	92.9%	91.3-92.9%	93.1%
Exhaust temperature	85°	85°	80°	85°	80°
DHW temperature	65°
Gas consumption	2.59-3.49 m 3 / h	2.78 m 3 /h	2.78-3.52 m 3 / h
Primary heat exchanger material	Cast iron	Stainless steel	Copper	Stainless steel	Copper
Chimney type	Separate/Coaxial
Power supply	Single phase, 230 V 50 Hz

Only the broadest traits shared by every model in a specific series are provided.

What"s included

Included in the boiler package are:

• Primary and secondary heat exchangers.
• Circulation pump.
• Gas burner closed or open type.
• Fan to supply fresh air to the combustion chamber.
• Expansion tank.
• Three-way valve.
• Gas valve.
• Sensor system.
• Control board.
• Connecting wires and pipes.

Certain boiler models come with extra components that serve as performance monitors or protective measures.

Installation of a wall-mounted double-circuit gas boiler Baxi

Boilers with a double circuit design by Baxi function according to standard principle. Through the system, the coolant is circulated using a circulation pump.

It enters a three-way valve at the outlet, where it combines with a specific amount of cold return to create the heating circuit’s desired parameters. A secondary heat exchanger uses the thermal energy from the heated heating agent to heat water.

A fan that creates the desired mode and supplies air flow ensures gas combustion in the combustion chamber. Sensors that communicate with the control board continuously monitor all operations and parts.

The sensors alert the owner to emergencies by showing an error code on the display so they can take the necessary action.

How to set it up correctly

The purchased boiler is brought to the location and placed in the allotted space. The pipes are connected to all pertinent pipelines, including coolant, gas, and water.

First boiler configuration:

• Electricity is connected.
• The gas supply valve opens.
• The desired operating mode is set – “summer” or “winter”.
• By pressing the corresponding buttons on the sides of the display, the temperature of the extract air and domestic hot water is set.

Following this, the boiler and burner will both turn on. The presence of air in the system could cause an error and block the boiler.

When this happens, pressing the "R" button resets the error, and the process is repeated until a successful outcome is achieved.

User manual

Boilers do not operate under any particular conditions or requirements. All the user needs is attention, occasional upkeep, and prompt error correction. They show that a fault has occurred and are shown on the display.

Rebooting and restarting the boiler is standard procedure because random signals or power surges frequently result in the occurrence of errors. Only workers from the service center are permitted to perform repairs.

It is not advised to perform such tasks independently as the outcome might not meet the owner’s expectations.

Technical faults and error codes

A sensor system detects all boiler malfunctions or breakdowns instantly and outputs an alert in the form of a digital code beginning with the letter "E" (error).

The most typical errors and behaviors by owners:

• E01. No flame on the burner. Possible reasons: lack of gas (check the valve), burner nozzles clogged with soot, problems with the sensor itself.
• E02. Thermostat overheating. The problem occurs either when the water moves too slowly, or when the heat exchanger is contaminated from the inside with lime deposits.
• E03. Fan stop. Check it for functionality and, if necessary, replace it.
• E05. Failure or short circuit of the air temperature sensor.
• E06. Failure or short circuit of the DHW temperature sensor.
• E10. Reduced coolant pressure. The most likely cause is a leak in the heating circuit. Most often occurs when using heated floors, since external radiators signal themselves by the appearance of puddles or streams of hot water..
• E25-26. Blockage or failure of the circulation pump, failure of the corresponding sensor.
• E35. False flame signal. There may be water on the board, breakdown of the sensor on the case, etc.P.
• E96. Power supply voltage too low.

As the complete list of mistakes is considerably longer, it is advised to have the user handbook alongside the boilers. It is easier to look at the list at the appropriate time rather than trying to memorize these codes by heart.

Boiler connection

When taking a bath or shower, you can use the boiler to eliminate surges and stabilize the DHW temperature. Hot water from the boiler is directed into a storage tank, which is the most straightforward and affordable design option.

The missing volume is promptly replenished from the boiler upon dispensing it. A connection to the hot water pipe is established.

Using more sophisticated and costly options is not recommended because the costs will be disproportionate and unjustified by the outcomes.

Wall-mounted gas double-circuit boilers, such as the Baxi, are a practical way to heat homes and provide hot water. Their small size, which is frequently concealed in utility rooms or kitchen cabinets, blends in nicely with contemporary living areas. By efficiently heating water for domestic use and heating systems, these boilers guarantee a consistent supply of hot water and warmth throughout the house.

Efficiency is one of the key benefits of a Baxi gas boiler. Compared to older or less efficient models, these boilers can result in lower heating bills because they are made to maximize energy use. They’re also eco-friendly options because they frequently have energy-saving features like high-efficiency pumps and modulating burners.

Like any technology, Baxi boilers are not without flaws, though. Costs associated with installation can be rather high, particularly if replacing an older heating system or requiring more plumbing work. Another factor to take into account is maintenance; although newer boilers require less maintenance than older ones, routine servicing is still advised to guarantee longevity and optimum performance.

To sum up, a Baxi gas double-circuit wall-mounted boiler provides modern homes with dependable and effective hot water and heating solutions. With its energy-saving features and small size, it’s a good option for homeowners looking to replace their heating systems. Prospective purchasers should, however, balance the long-term advantages of comfort and energy efficiency against the initial installation costs and continuing maintenance.

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