How to troubleshoot a Mimax boiler

Mimax VEGA is a completely new gas boiler with high efficiency. Development engineers achieved efficiency values ​​of up to 92% thanks to comprehensive improvement work. The Mimax VEGA boiler received an “OPTIMA” atmospheric burner. Material of manufacture: stainless steel. The “OPTIMA” burner helps save gas and has increased efficiency coefficients for natural gas combustion. In addition, the special design of the heat exchanger and rectangular turbulators increase performance.

First of all, we need to figure out what “KGS” means in the product name and decipher the abbreviation. The designations are actually intuitive and there is nothing complicated in the markings: Let's look at an example, gas boiler Mimax VEGA KSGV - 12.5

Mimax is a trademark, production is located in the city of Taganrog; K – boiler; C – steel; G – gas; B - this index appears only to designate dual-circuit equipment with the ability to prepare hot water. Accordingly, the absence of the “B” index tells us that this is a single-circuit model suitable exclusively for heating; 12.5 – rated power 12 kW.

Mimax VEGA selection of the required boiler

Often the consumer is faced with the need to choose a gas boiler according to his needs. Let us remind you that there is a general recommendation, and you need to choose a unit depending on the area, taking into account that 1 kW of power heats 10 square meters. Modern insulation materials help reduce this requirement, and it may turn out that 0.7 kW per 10 m2 will be quite sufficient. For your convenience, we have prepared a selection table for Mimax VEGA gas equipment:

In an effort to ensure maximum control comfort, the manufacturer equipped the Mimax VEGA gas device with “SIT” automation from a renowned European supplier occupying a leading position in the production of gas equipment. The units use a EuroSit 630 gas valve and are equipped with a 710 MINISIT gas valve for 25 and 31.5 kW units.

We are proud of the gas burner device of our own design and manufactured at the plant’s production sites. The devices are equipped with a built-in gas reducer and are equipped with piezo ignition. As basic protection, each Mimax VEGA boiler has a draft sensor and an additional sensor against excessive heating of the equipment.

I would like to dwell on the issue of preparing hot water in a dual-circuit device. According to the characteristics declared by the manufacturer, we have very modest indicators. KSGV-12 - 4.2 liters per minute, KSGV-16 - 5.4 liters per minute, KSGV-20 - 8.3 liters per minute, KSGV-25 - 10 liters per minute, and KSGV-31 - 11.6 liters per minute. Thus, the Mimax VEGA boiler with a power of 31 kW more or less copes with the task of providing domestic hot water.

But not everyone buys such a powerful boiler. As we know, to heat a house up to 100 m2, a 10 kilowatt device is enough for us. Such indicators make it irrational to use a powerful boiler in a small room for preparing hot water. Such high rates will require additional gas consumption. In relation to the Mimax VEGA boiler, an indirect heating boiler is ideal for arranging DHW.

How to start a gas boiler: preparation

There are simple instructions explaining how to start the gas boiler shown in the photo. The initial start-up is carried out when the installation and wiring of all elements of the heating equipment is completed, and the correctness of the work has been verified by the relevant authorities.

The location of the heating unit must be selected in accordance with safety standards and regulations that prevent fires. The boiler must be located at a certain distance from the wall, which depends on the manufacturer's recommendations. By the way, for some models of gas appliances this requirement is not relevant. You should also make sure that there are no flammable materials or objects nearby.

In addition, it is prohibited to place boilers near windows, as their operation will be disrupted. The even position of the device body is of no small importance - even minor distortions are unacceptable.

When solving the problem of how to start a gas boiler, special attention should be paid to the supply of pipes from the gas main. They do not carry out these installation works themselves, but invite specialists from the relevant services who are involved in connecting, sealing and, if necessary, installing a gas meter.

Before you turn on the gas boiler, you should lay a separate power line specifically for the heating unit. The equipment must be equipped with an electrical cable and plug, and an outlet must be installed next to the device, separating it from the others.

After this, the boiler is connected to the chimney pipe, in which the draft and its performance are checked. She must go outside. The installation work to install the chimney depends on the type of heating device.

When preparing for startup, the boiler is disconnected from the power supply to fill it and the heating system with cold water. Then they check for leaks, turn the thermostat to the maximum value so that the operating mode switch lights up in automatic mode.

Gas boiler Mimax VEGA application

According to the general instructions from the manufacturer, the Mimax 12.5 VEGA boiler is intended for use as a heating device in individual residential premises and public buildings. The hydraulic part of the heating system must be made with mandatory gravitational or forced movement of the coolant using a pump.

According to the instructions, the manufacturer recommends using plain water in the heating circuit, but as experience and consumer reviews show, adding glycol-containing solutions to it up to 30% does not greatly affect the performance of the equipment.

The Mimax VEGA device is operated exclusively on low-pressure natural gas without the possibility of reconfiguring its operation from the supply of liquefied fuel. Combustion products are removed by connecting a conventional chimney to the boiler.

Review, design, automation of the Conord gas boiler (Rostov-on-Don)

Conord floor-standing gas boilers have positive reviews, which can increasingly be found on various thematic forums. Let's consider the model range, technical characteristics, device, types of automation (gas burner devices), using the instructions for use.

Model range and description of Conord boilers Floor-standing gas boilers Conord are produced with a power from 8 to 30 kW. They come as single-circuit : KSts-G-8, KSts-G-10, KSts-G-12, KSts-G-16, KSts-G-20, KSts-G-25, KSts-G-30; and double-circuit: KSts-GV-10, KSts-GV-12, KSts-GV-16, KSts-GV-20, KSts-GV-25, KSts-GV-30.

Single-circuit devices can only be used for heating premises with an approximate area of ​​30 to 300 m2. Conord double-circuit gas boilers can be used for both water heating and hot water supply (DHW).

It is worth noting that if you plan to use a double-circuit boiler to fully utilize the DHW circuit, you need to buy a Conord boiler with a power rating of 16 kW or more. In this case, it will produce from 8.5 liters of hot domestic water per minute.

There is no point in buying, for example, a double-circuit boiler KSts-GV-10 with a power of 10 kW. Of course, it will not give you a good volume of hot water. Boilers can be used in both open and closed heating systems.

Installation of floor-standing gas boilers Conord

The boiler consists of a steel firebox 3 mm thick, a casing, a water jacket, smoke pipes with turbulators built into them to increase the efficiency of the boiler, a gas burner device (automation), a layer of thermal insulation made of basalt cardboard, and a thermometer to monitor the temperature of the coolant. In double-circuit models, a special coil for the water circuit is installed around the smoke pipes.

The coolant inlet and outlet, as well as the DHW coil, are located on the rear side of the boiler body. The thread diameter of the heating connection pipes for all models of this brand is 2 inches or 50 mm. For DHW circuit 1/2 or 15 mm. The chimney diameter for models with power from 8 to 12 kW is 115 mm, for 16 kW and above - 150 mm.

Due to the built-in turbulators and good thermal insulation, the efficiency of the Conord boiler reaches 90%. These heating devices are capable of operating at reduced gas pressure and are completely energy independent of electricity . The manufacturer claims a boiler service life of 15 years and a factory warranty of 3 years, which is also indicated in the operating instructions.

Automation for gas boilers Conord

Three types of automation can be installed on floor-standing boilers of this brand :

— domestic type AGU-T-M

— Italian Euro SIT

- American Honeywell

Our domestic automation is the simplest and most inexpensive. It is installed not only on boilers from the Conord plant, but also on some other Russian-made models. Starting occurs manually by ignition using a match or lighter.

In general, the automation is not particularly fancy and is easy to use. Its only drawback is its very frequent breakdowns. And since a breakdown can occur at the height of the heating season, leaving a living space without heating for several days is not the best idea.

Euro SIT automation consists of a sectional burner and Polidoro tubes , as well as a safety system : igniter with thermocouple, temperature sensor, SIT gas valve, draft sensor and wires. If the pilot burner goes out, the gas is turned off, or there is no draft in the chimney, the automatic system instantly shuts off the gas supply to the burner. Ignition occurs by pressing the piezoelectric element button. The coolant temperature is provided by the gas valve and set by the thermostat knob. More and more ordinary users note SIT as durable and quite safe, thanks to the built-in automatic protection against gas leaks.

Honeywell automation from an American manufacturer has similar technical characteristics to a EuroSIT gas burner device. The principle of operation is the same, it differs mainly in the manufacturer and material of some elements. Ignition is carried out by pressing the handle to the right of the thermostat and then turning it to the stop position to operate the boiler in economical mode.

Advantages of Conord gas boilers

— wide model range — three types of automation — cost-effectiveness — high efficiency — in case of boiler malfunction it’s easy to find spare parts — good thermal insulation

Disadvantages of Conord boilers

— price.

Possible malfunctions of the Mimax VEGA boiler and their elimination

As we can see, the design of the Mimax Vega boiler is not complicated and quite reliable. However, there are a number of cases where malfunctions occur. It should be remembered that specially trained people with the appropriate documents are allowed to repair breakdowns of gas communications and gas valves.

Below we provide a list of breakdowns, causes and their elimination. However, we strongly recommend that if you encounter damage that you cannot repair on your own based on the recommendations, it is better to transfer the repair task to the official supplier from whom you purchased the device.

Mimax VEGA boiler technical specifications

Below we present all available technical characteristics for seven modifications of boilers. Please note that when putting a cold boiler into operation, you will most likely find droplets of water on the walls of the firebox. This is nothing more than the formation of condensation; it flows onto the floor, creating the illusion of a leak in the device. Don't be alarmed, this is not a malfunction. As the equipment warms up, the condensate will evaporate.

All Mimax Vega devices are subjected to bench tests and adjusted by plant specialists in various simulated conditions close to real ones. Factory services strictly prohibit the consumer from independently adjusting the automation!

We have described the principle of ignition of equipment with similar automation more than once; it is exactly the same as, for example, the Conord boiler; the article gave an algorithm and described the ignition procedure in sufficient detail. How to light a gas boiler with Eurosit630 automation, watch the video:

Boiler Mimax vega advantages

• In-house production of gas burner device AGU-T-M.
• Atmospheric gas burner made of stainless steel.
• Optimal use of energy when burning fuel, thanks to turbulators.
• Equipped with EUROSIT automation from a leading Italian supplier.
• Thick walls of the heat exchanger, at least 3 millimeters; cold-rolled steel is used in their manufacture.
• The combustion chamber with thermal insulation with basalt wool provides additional safety.
• Affordable pricing policy of the company.

Mimax vega boiler disadvantages.

Considering the low price, and not carping about domestic details in the field of design, no significant shortcomings in the operation of the equipment were identified. The new line of heating equipment has proven itself to be a reliable device in operation. The latest modern technologies and improved materials help Mimax engineers produce multifunctional boilers, taking into account our climatic conditions.

Russian latitudes are mostly harsh and unpredictable, however, Mimax VEGA boilers adequately cope with the task in bad weather. The use of a heat-insulating thermally stable layer helps to retain the necessary heat in the coolant and not waste it.

Classification of Mimax heating boilers

The following models of Mimax heating boilers are distinguished:

• Vega;
• parapet;
• Titanium;
• heating systems with one and two circuits;
• solid fuel.

Mimax Vega Series

The Mimax Vega heating boiler is economical and efficient, with an efficiency of 91%. The device operates on atmospheric burners made of stainless steel. The design consists of a gas reducer, a draft sensor, piezo ignition, and a boiler overheating sensor. The automation is manufactured by the famous Italian company SIT. The body is coated with powder enamel, which has anti-corrosion properties.

Heating is also in demand among buyers.

If, then you can use gas heating even without a central gas pipeline.

Mimax parapet boilers

KSG (P) – parapet boilers. Suitable for rooms where there is no chimney (see). They are installed in cottages and apartments. They are characterized by ease of installation and operation, versatility and high efficiency. In their manufacture, high-strength metal with a thickness of 2.5 mm is used. The estimated service life is more than 20 years. Efficiency 91%. The products are equipped with Italian automatic equipment, which improves their technical and operational characteristics.

Mimax Titan Series

Titan boilers are compact and have increased power. The product is made of stainless steel. The metal thickness is on average 3 mm, so the unit lasts a long time. The body is insulated. Compared to previous versions, the boiler is equipped with an enlarged combustion chamber, which results in better heat removal. Heaters can be equipped with heating elements.

Mimax single and double circuit boilers

Hot water domestic models operating on natural gas are KSG (M) and KSG (IR), as well as KSGV (IR) and KSGV (M). The first two types are single-circuit, and the second two are double-circuit. The efficiency of the equipment is at least 88%. Suitable for areas from 70 sq. m up to 400 sq. m. Models without a DHW circuit have built-in atmospheric gas burners and unique Optima automation. Boilers with water heating have domestic automatics AGU-T-M, as well as Maxima burners made of stainless steel.

Floor-standing ones do not depend on electricity and can work in both open and closed heating systems.

For each model, which also contains information about the configuration of the unit.

Solid fuel boilers MImax

KST, KSTG, KSTV, KSTGV are markings for Mimax solid fuel boilers. This line is distinguished by increased operational and technical indicators. Made from 3 mm steel. They can operate on various types of fuel - wood, coal, anthracite, etc. Domestic automation AGU-T-M allows devices to last for decades and increases their reliability and practicality.