Two-circuit parapet gas boiler which manufacturer is better

Selecting the ideal gas boiler for home heating is an important choice that affects comfort and energy efficiency. The capacity to supply both hot water and heating makes the two-circuit parapet gas boiler stand out among the available options. It’s important to know which of these boilers might be the best fit for your needs because different manufacturers offer different versions of these boilers.

The way two-circuit parapet gas boilers work is by heating water for home hot water use as well as the central heating system. They are popular options for residential heating solutions because of their dual functionality, especially in spaces that are small or cannot accommodate a separate hot water tank. But not every boiler is made equal, and different producers might provide boilers with different features, levels of dependability, and capacities.

A number of factors are taken into account when determining which manufacturer makes the best two-circuit parapet gas boiler. The efficiency of the boiler is one important factor to consider, as models with higher efficiency can result in lower energy costs and a smaller environmental impact. Furthermore, dependability is crucial because it guarantees that the boiler will function consistently and require little maintenance over its lifetime.

Service and support availability is another important factor. Choosing a boiler from a reliable manufacturer with a robust service technician network can ease your mind, knowing that help is close at hand in the event of any problems or maintenance requirements. Furthermore, customer satisfaction scores and warranty coverage can provide information about the general caliber and dependability of a given manufacturer’s offerings.

Additionally, it is imperative to evaluate the distinct features and functionalities provided by various manufacturers. Certain features, like their advanced control systems or ability to work with renewable energy sources like solar thermal panels, might better suit your needs and preferences than others. By weighing these factors, you can decide which manufacturer provides the best option for your home’s heating requirements.

What is a parapet gas boiler – device, principle of operation

Device parapet heating boiler on gas

The internal mechanism of the parapet gas equipment was created to stop oxygen from burning in the space where the boiler is located. Many design adjustments were made with this goal in mind. The end product of the modifications is a gas-fired boiler, which has the following characteristics:

  • Energy independence – the boiler in the basic modification, is able to operate without electricity.
  • Sealed combustion chamber – primary and main gas burner, built into the closed furnace chamber. During combustion, air intake directly from the street is carried out.
  • Vertical heat exchanger – built into the upper part of the furnace. Vertical hollow plates, made of heat-resistant steel. The coolant circulates inside. Hot water supply, provides a built-in copper coil.

  • The principle of operation depending on the time of year. Parapet two-circuit gas boiler, has two operating modes, depending on the season. In the winter season, the heating medium and hot water is heated. Heating takes place alternately. If the boiler starts heating water for DHW, the heat supply is switched off and vice versa.
    The principle of operation in summer time, excludes the use of a heating exchanger. It is carried out exclusively heating hot water, through a copper coil.
    Gas consumption differs in different modes. When heating DHW in summer, the cost is only 30% of the total energy consumption during the heating season.
  • Automation – conventional boilers, equipped with a mechanical thermostat gas supply. Regulation is carried out by means of a rotary mechanism connected to various sensors. Some modern models are equipped with a microprocessor controller, regulating the boiler in automatic mode.
  • The parapet boiler’s internal design and operation are similar to those of many classically designed units. However, some variations allow for a wider range of applications for the apparatus.

    How a parapet boiler differs from a chimney boiler

    The closed-type parapet gas boiler is energy-independent. All operations, including gas combustion, are carried out in a closed, hermetically sealed furnace chamber. The primary distinctions from the traditional units are as follows:

    • Absence of a classical chimney. In classic boilers, the air intake is carried out directly from the room. After combustion of gas, the combustion products escape into the vertical chimney under the action of natural draught. In the parapet equipment, air intake and removal of combustion products, occurs with the help of a coaxial chimney pipe.
    • Special design of the furnace chamber – steel heat exchanger, two burners, DHW coil, enclosed in a sealed chamber, connected to a coaxial chimney. Air intake is carried out along the outer contour of the chimney, after which, comes to the burner from below. The heated air passes through the vertical heat exchanger and is discharged from the boiler drum through the core of the coaxial pipe.

    For a 10 kW parapet boiler, the typical gas consumption is approximately 1 m³/hour. A two-circuit unit will use between 15% and 20% more fuel to heat the district heating water.

    Which parapet boiler is better to choose

    Pay attention to the heating boiler’s extra features and thermal properties when selecting any model. Included in the computation are the unit’s capacity, the potential to heat water for household purposes, and the location of the factory producing the heating apparatus:

    • Capacity – average capacity values, calculated according to the formula 1 kW = 10 m². This formula is suitable for well-insulated buildings in medium-sized regions of the Russian Federation, having a ceiling height of no more than 2.7 m.
    • Functionality – parapet single-circuit gas boiler, works only for heating. To connect DHW, it will be necessary to install an indirect boiler, which will require additional financial costs. Two-circuit parapet gas boilers, in this respect are convenient, as they have a built-in function of water heating and a switch that allows you to switch the unit to summer or winter mode of operation.
    • Manufacturer – the rating of the most reliable boilers, headed by German manufacturers, Austrian and Czech models are right behind them. Domestic parapet gas boilers, with a closed combustion chamber, have an attractive price and good thermal characteristics.

    Reviews indicate that Russian and European businesses are the top producers of gas parapet heating boilers. The latter’s products are fully suited to domestic operating conditions and are sold at a reasonable price, despite being somewhat less automated and more economical than those of their European competitors. Commonly utilized models produced by nearby foreign factories:

    • Domestic gas parapet boilers of Russian production – Lemax, Gefest, Barsky Mashzavod, Helios, Danko, Konord, HeatLine, Taganrog Gazoapparat,
    • Ukrainian gas heating boilers of parapet type, for apartments and private houses – Termomax, ATON, Atem, Mimax, Termotechnik, Mayak, Dani, Proskurov, ROSS, Ochag.

    Parapet boilers from Russian and Ukrainian manufacturers are two to three times less expensive than those from European manufacturers.

    How to install a parapet heating boiler

    The technical specifications and guidelines that relate to the room where the gas equipment will be installed, the connected chimney, etc., must be followed when installing a parapet boiler. The installation process and guidelines are outlined in DBN B.2.5-20-2001, SNiP 31-02-2001, SNiP II-35-76, SNiP 42-01-2002, and SP 41-104-2000.

    Installing parapet gas boilers in a private residence or an apartment within a multi-story building is permitted. In addition, the space needs to fulfill the minimal specifications outlined in the aforementioned guidelines. Strict adherence to the installation’s guidelines and order is necessary throughout.

    Room requirements for the parapet boiler

    Installation restrictions specify the minimum dimensions and height of the space required for the boiler room. The specifications for ventilation, lighting, and other aspects are also provided. ο:

    • Parapet boilers up to 30 kW, can be installed in a room with a total area of up to 7,5-8 m². It is allowed to use the kitchen and utility rooms for needs.
    • The minimum ceiling height is not less than 2.2 m.
    • Ventilation of the room – in the boiler room must be present working supply and exhaust ventilation. Doors are installed without thresholds. Opening windows are mandatory.
    • Lighting – for every 1 m³ of boiler room, there must be at least 0,03 m² of window opening.
    • Features of operation – maintenance of gas equipment is carried out at least once a year. Together with the boiler operation, the operation of the supply and exhaust ventilation is checked. An inspection report is drawn up.
    • Commissioning of the boiler, is possible only after inspection by a representative of the supervisory authorities, compliance with all requirements regarding the correct connection of gas equipment.

    Chimney for parapet boiler

    It is not possible to connect the parapet boiler to a conventional vertical chimney. It is possible to connect only coaxial pipe due to internal design. A vertical coaxial chimney can be used when multiple gas boilers are connected at the same time.

    A proper connection to a horizontal chimney needs to meet a number of specifications:

    1. Horizontal section, the total should not exceed 3 meters.
    2. When passing through the floor slabs, use a special block – partitioning.
    3. On the chimney header, install a condensate trap and wind protection.
    4. The chimney is installed at a slight slope away from the boiler to prevent condensate from flowing inside the unit.

    Stainless steel or plastic make up the pipe that passes through the wall to remove combustion products. Because of the low temperature of the exhaust gases, any kind of chimney can be installed. Practical experience has demonstrated that installing a stainless steel coaxial pipe is more sensible.

    How to protect a parapet boiler from wind

    When installed correctly, parapet models function almost flawlessly. Blowing boilers are a sign of several issues, including improper automation settings, chimney connections, and other issues.

    Eliminating the source of work malfunctions will be necessary if the intensity of work stoppage occurs more than once in several heating seasons.

    A gas parapet boiler may go out for any of the following reasons:

    • There is no wind protection on the head of the chimney. The casing, manufactured in factory conditions, already has a special insert, protecting against wind gusts. The protection can be made of any galvanized steel, attaching it to the casing with press washers or rivets.
    • Incorrect settings are set – in order not to blow the parapet boiler, it will be necessary to lower the permissible gas pressure, at which the module will remain operational.
    • Insufficient draught intensity – the device of the gas duct is made in such a way that the slightest disturbance in the draught characteristics, will lead to the boiler shutdown. To eliminate problems, check the correctness of the chimney connection and correct any mistakes made.

    It is advisable to entrust the installation of the unit to a qualified specialist licensed to perform these works in order to prevent potential boiler shutdowns due to wind gusts.

    Weaknesses and strengths of parapet type boilers

    Owner testimonials regarding parapet gas heating boilers made it possible to assemble a brief list of benefits and drawbacks for this kind of heating equipment:

    • Minuses – parapet models have a small capacity and are not designed for heating large areas of premises. The boilers are suitable exclusively for heating small private houses and apartments. The equipment is sensitive to errors made during the installation of coaxial chimney.
    • Pros – compact size and the ability to choose the boiler, with the necessary side of the connection to the heating system. Models are distinguished by low cost, energy efficiency and efficiency, in the range of 98-100%. Closed furnace chamber and the absence of negative impact on the microclimate of the heated room, reduce the requirements regarding their installation.

    Certain benefits and drawbacks can be discovered firsthand by reading through the evaluations of customers who have actually used the product. Technically speaking, parapet equipment has even more benefits than drawbacks, with incorrect installation being the primary cause of the latter.

    Boilers of the parapet variety are affordable, dependable, and very well-liked by homeowners.

    Warm water flooring’s power and temperature calculations

    Principle of operation and customer feedback on the parapet gas boiler

    If an owner prioritizes efficiency, safety, and practicality when designing a heating system, he should take parapet gas boilers into consideration. These boilers can serve as basic devices for heating the coolant in the circuit. In contrast to conventional gas-fired heaters that have large, bulky dimensions, parapet models feature a neat, compact, rectangular body with an integrated chimney. The boilers’ ease of installation, high maintainability, ease of operation, and availability of maintenance are all determined by these design differences.

    Specificity of parapet boilers device

    Prior to purchasing a parapet gas boiler, the buyer should educate himself on the ins and outs of how it works. These devices stand out primarily for their energy independence, closed combustion chamber use, and simple combustion product removal via a coaxial chimney. The creators were able to incorporate the advantages of both eco-friendly convectors and conventional gas boilers into a single device thanks to this design. Consequently, the positive reviews for the parapet gas boiler indicate that it is a useful and safe heater that can be used to efficiently heat small spaces.

    The following components serve as representations of the boiler device:

    • gas valve;
    • burner for combustion of the energy carrier;
    • hermetic type combustion chamber;
    • vertical gas duct;
    • steel casing.

    The integrated vertical gas duct, which allows flue gases to be released outdoors and draws air from the street to create the ideal gas-air mixture, appears to be the only feature that sets the parapet boiler apart from the traditional analog design at first glance. The following features become apparent when we examine the parapet boiler’s design features in greater detail:

    1. steel body with special holes is involved in the process of convective heating of air, and improves the efficiency of the boiler;
    2. the use of a closed combustion chamber makes the appliance safe and protects the household from accidental carbon monoxide poisoning;
    3. the presence of a unique gas burner device ensures maximum productivity and efficiency of the device;
    4. energy independence of boilers increases the autonomy of the heating system and eliminates the need to use forced blowing.

    Gas boilers with a two-circuit parapet design that have been somewhat modified are priced starting at $200. These models’ device is distinguished by the inclusion of an extra circuit. It contributes to the process of providing hot water for household requirements. The water flows through the extra circuit and heats up to the temperature that the thermostat has set. When opening the matching tap in the kitchen or bathroom, it can be utilized by the residents. This apparatus enhances the boiler’s performance and broadens its range of use.

    Operating principle

    Reviews of parapet gas boilers, which are available on manufacturer websites, vary in terms of appearance, price, and performance attributes depending on the model. Nonetheless, the majority of models operate on a similar principle. It can be schematically shown as consisting of multiple stages.

    First, the pilot burner is lit using a piezo ignition system, and after that, gas is fed to the main burner.

    The coolant circulates through the heat exchanger’s walls, which are heated by the combustion gases. The automation tells the boiler to stop operating and extinguishes the burner when the coolant reaches a predetermined temperature. The boiler’s operation is then controlled by a thermostat and temperature sensor system that sends commands to turn the appliance on and off in response to changes in the room’s temperature.

    Model range

    Boiler models with parapets are currently available in a broad range of models from various manufacturers.

    The product line includes boilers with varying capacities that are intended for residential and apartment heating.

    In addition, boilers are categorized based on their operational features, number of circuits, and installation type. The cost of the gas boiler and how well it performs in the heating system are determined by these factors. It is advisable for astute purchasers who wish to research heater models before settling on a specific model to examine offerings from the top companies in the home heating equipment industry.

    Boilers from the brand "Termotechnik" – reliability and affordable price

    Customers looking for a dependable and superior heating option ought to consider parapet boilers manufactured under the "Termotechnik" brand. The devices are put together within the borders of Russia and are reasonably priced because the manufacturer does not have to pay for export expenses or customs duties. Gas boilers Thermotechnik reviews about, which talk about the stability and durability of devices, have all the characteristics of a practical and dependable heater despite their accessibility and straightforward design.

    Particular variations among "Thermotechnik" boilers:

    • high maintainability;
    • availability of spare parts and repair kits;
    • inexpensive price;
    • adaptability to work in difficult conditions;
    • ease of maintenance.

    The gas boiler Taiga, with a power range of 5 to 20 kW, deserves special attention in this brand’s lineup. The network has reviews of the Parapet gas boiler Taiga, which is a skillfully constructed, well-designed appliance with a 90% efficiency rating. Because the boiler has Italian automatics installed, using it as a basic heating appliance ensures the circuit will operate steadily and dependably.

    Helios" boilers – excellent price and a solid warranty from the manufacturer

    "Helios," a Ukrainian brand, makes decent-quality parapet boilers. These devices are also distinguished by their affordable price, simplicity of operation, and ease of installation. Furthermore, Helios boiler gas offers several competitive advantages, with prices ranging from 180 to 250 dollars based on capacity.

    Benefits of the "Helios" parapet boiler:

    1. high efficiency;
    2. wide model range;
    3. possibility of installation in open and closed heating systems;
    4. availability of reliable Italian automatics
    5. high level of safety.

    Boilers from the brand "Luch" – functionality and reliability

    Taganrog is where Parapet Gas Boiler Luch is made. This boiler is not like its counterparts because of its small size, easy installation, and low cost. Homes ranging in size from 80 to 180 square feet can be heated with a variety of boiler models. When choosing the boiler capacity, keep in mind that wear and tear on the device shouldn’t be a factor. Experts advise choosing the device’s power based on the specifications of the heating plan, which was created by skilled heating engineers.

    The following list illustrates how the parapet models from the "Luch" brand operate in specifics:

    • rational consumption of gas;
    • complete combustion of the energy carrier in a sealed chamber;
    • convenient location of spigots for connecting the gas supply mains;
    • low heat losses;
    • The presence of a tubular heat exchanger, providing maximum boiler performance.

    Customer feedback

    When purchasing a boiler gas two-circuit parapet, owners can assess which manufacturer is better by reading user reviews from people who have used similar products. Customers who use smoke-free boilers in their homes typically speak with one voice regarding the device’s safety and usefulness. Affordability, the ability to use boilers in confined spaces, and the modification of devices to function in domestic settings are also emphasized.

    Customer reviews of Parapet Gas boilers should be closely examined in order to determine what drawbacks they may have. Individuals who have used parapet boilers in the network and would like to share their negative experiences point out the following subtleties:

    1. The sensitivity of the boiler to blowing (noted in strong gusts of wind);
    2. limited heating area;
    3. the need for competent connection of the chimney, requiring the call of a specialist.

    Among the vast array of heating appliances, parapet boilers are a cost-effective and useful option. They can be incorporated into the heating circuits of homes, apartments, vacation homes, offices, and other real estate types since they satisfy all user requirements for heaters. These boilers ensure economical resource usage, come in a variety of capacities, and reduce heating costs thanks to their low heat loss.

    Two-circuit parapet gas boiler: selection by parameters

    Parapet gas boiler with two circuits: parameter selection

    Heating is a crucial component of a home’s winter comfort, but in order to achieve optimal heat transfer efficiency, it must be installed in compliance with the specifications of the equipment. It’s important to understand a few of the features of a parapet gas boiler if you plan to install one. Additionally, it’s important to comprehend the variations among gas boilers of the parapet type before selecting the appropriate model.

    Advantages of two-circuit parapet boilers

    Benefits of boilers with two circuit parapets

    • small size and overall compactness of the equipment;
    • can be located in any room, even in the kitchen;
    • Convenience of installation: under the window sill or above the table;
    • Availability of coaxial pipes for easy smoke extraction.

    Wall mounted parapet models

    Installing a parapet gas heating boiler is simple, particularly if it’s a wall-mounted model. According to the specifications of gas engineers, they do not require a specially equipped room, in contrast to floor standing models. Moreover, a standard vent and the existence of a ventilation hole are sufficient for their installation; a chimney outlet is not required. There’s no need to construct an elaborate chimney system, adhere to strict regulations, or find sufficient room for the boiler.

    Wall-mounted models also have the benefit of being able to connect at any point in the system. A beautiful appearance won’t take away from the overall design of the space; it will simply make the kitchen or bathroom cozier.

    Boilers that are mounted on walls have an automated control system. They also don’t require radiators where they are installed because they have a piezoelectric ignition system.

    Peculiarities of installation

    A lot of owners are attempting to learn how to install a Thermo gas boiler under a parapet. To accomplish this, acquaint yourself with the conditions outlined in the state regulatory documents pertaining to the installation of said equipment. To avoid wasting time researching "Gas Distribution Systems" and "Gas Supply" regulations, it is preferable to work with Gorgaz, a service that specializes in the specifics of connections and building and equipment requirements.

    You should carefully read the specifications as they will detail the specifics of the connection in your house. In order to accomplish this, you must submit an application to the city gas supply service, clearly stating how much fuel is needed each hour. You can study the technical requirements for the boiler installation and system installation once the application has been reviewed and approved.

    It is not only unsafe but illegal to install the boiler yourself, so you should avoid doing it yourself. Many people may suffer as a result of your actions, particularly if you live in an apartment.

    After reading through all of the instructions, you can move on to the project "Gas Supply," which outlines the location of the boiler and the plan for installing a gas pipeline to it, as well as the design of the heating system. Following development, the project and the following documents are submitted to the service for approval:

    • technical passport for the boiler;
    • Boiler operating instructions;
    • certificates certifying compliance with technical requirements and sanitary and hygienic norms;
    • expert opinion on the compliance of the boiler with the mandatory requirements.

    The installation can only be started with the State Gas Company’s approval.

    Installation requirements

    • it is forbidden to install the boiler on combustible materials;
    • cannot be placed in corridors, bathroom, basement, balcony;
    • it is forbidden to install the boiler in a poorly ventilated room or in a room without windows;
    • You cannot install a boiler in a dormitory.

    Installation conditions

    1. The first thing to do is to correctly select the parameters of the room for the installation of the Thermobar gas boiler.
    2. The square of the room where the boiler will be installed must be at least 4 square meters.
    3. The width of the entrance door should not be less than 80 cm.
    4. Good lighting and high ceilings are a must.
    5. The presence of an earthing circuit and cold water piping.
    6. The chimney must meet the requirements that depend on the power of the equipment, so it is important to choose a parapet gas boiler Colvey parameters.
    7. The walls of the room must be level.

    Two-circuit models are best positioned in the kitchen next to the gas stove if they meet these requirements. Should the boiler be floor mounted, an independent room is necessary.

    Features of installation of a wall-mounted boiler

    Important information: You are not allowed to install the boiler or any other equipment by yourself.

    First, preparatory work must be done, which calls for the presence of experts who are authorized to perform this kind of work and adherence to the 15–25 degree Celsius temperature range.

    1. Fixing the boiler bracket.
    2. Connect water. If the model is two-circuit, it is important not to forget about the need for a mesh filter.
    3. Connect the equipment to the gas tap.
    4. Using a three-core wire, connect the electricity supply.
    5. It is necessary to connect the coaxial pipe to the boiler, which is led through the wall to the street. Before starting the equipment should fill the system with water. After that, a check for gas or water leaks is carried out.

    The natural draught might not be enough to remove the combustion products if the boiler is very powerful. In this instance, a forced extraction—which is built into the attic or the space between floors—is necessary. Install a pipe with a hatch for this reason; it will be simple to clean.

    Choosing the correct manufacturer is essential when selecting a two-circuit parapet gas boiler for your home’s heating requirements. The features, quality standards, and customer service provided by different manufacturers can have a big impact on your overall satisfaction and the effectiveness of your heating system. When comparing options, it’s critical to take into account elements like user reviews, warranty coverage, energy efficiency, and dependability. Making an educated choice that guarantees your home will function and feel as comfortable as possible can be facilitated by doing extensive research and speaking with professionals.

    Installation of floor standing and parapet boilers

    The inclusion of transport wheels or special legs facilitates simple installation and delivery. They therefore don’t create problems. Additionally, these models are sold assembled, which simplifies the work for experts. The greatest substitute for wall- and floor-mounted models is the parapet unit. Due to the energy-independent heat generator it possesses, two-room apartments can have independent heating.

    It is important to keep in mind that there are some boiler models that do not always meet the specified specifications, known as exceptions. Furthermore, heating a wooden room is not always possible according to the requirements and specifications.

    Boiler installation is not an inexpensive process. This is caused, first and foremost, by the intricacy of the mechanism, the workers’ accountability, and the requirement that only certified professionals be called in order to establish a connection. You cannot save money because it is not permitted for you to handle the installation on your own. The cost of such a treat will range from $300 to 650 dollars, depending on the type of boiler and how complicated the connection is.

    This price covers start-up, safety precautions, installation, delivery, and part purchases. It also includes filling the system with water and verifying all parameters.

    Gas boilers parapet type

    Criteria Recommended Manufacturers
    Reliability Bosch, Viessmann
    Energy Efficiency Worcester Bosch, Vaillant

    It’s important to weigh a number of considerations before selecting the best two-circuit parapet gas boiler for your house. There are numerous manufacturers available on the market, each with unique advantages and disadvantages. To make sure you invest in a boiler that successfully satisfies your heating and insulation needs, it is imperative that you evaluate these factors.

    The manufacturer’s credibility and dependability are important factors to take into account. Investigating consumer feedback and industry rankings can yield insightful information about the effectiveness and caliber of various brands. Seek out manufacturers who have a history of creating boilers that are reliable, long-lasting, and efficient.

    The unique characteristics and functionalities of the boiler models that each manufacturer offers should also be taken into account. Compare things like compatibility with your current heating system, energy efficiency ratings, and heating capacity. Certain manufacturers might provide extra features like advanced control options or integration with smart homes, which could improve the overall efficiency and comfort of your heating system.

    Remember to evaluate each manufacturer’s level of after-sale service and customer support as well. In order to guarantee that your boiler runs smoothly and effectively for the duration of its life, a trustworthy manufacturer should provide prompt customer service and dependable maintenance services. Take into account elements like warranty coverage, parts availability, and ease of making service appointments.

    In conclusion, it’s critical to take reputation, product features, and customer support into account when determining which manufacturer of two-circuit parapet gas boilers is best suited for your house. You can make an informed choice that will guarantee your home has the best possible insulation and heating by carrying out in-depth research and analyzing the advantages and disadvantages of each option.

    What type of heating you would like to have in your home?
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    Sergey Ivanov

    I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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