A boiler stores domestic hot water and provides an instant and constant flow of hot water; it receives heat from an external source via a coil or produces it using an electric resistance element. A single-coil boiler is the most practical solution for projects connected to a single heat source (boiler, heat pump, central heating network). A dual-coil boiler offers greater flexibility for applications requiring the integration of two different sources (e.g., solar collector + boiler or heat pump + boiler) in the same tank. Electric boilers, which do not have a coil, produce heat directly from electricity using stainless steel heating elements. They are particularly popular in areas where mechanical installations are limited and for supplementary heating needs.

In MIT boilers, surfaces in contact with water are coated with a double layer of hygienic enamel. The enamel's thickness, between 200 and 250 µm, is achieved through a boron-silicon-based formulation with added titanium, compliant with the RoHS directive. Surface preparation prior to enameling involves a double bath, which reinforces the glass-ceramic nature of the coating and ensures its longevity through cathodic protection. For the boiler body sheet metal, a low-carbon, hot-rolled material, grade TRKK 6222 (Ereğli), compatible with the enamel, is preferred. Epoxy-coated boilers offer high corrosion protection and a favorable total cost of ownership. The choice between enamel and epoxy is determined on a case-by-case basis, depending on the process and water quality.

To reduce standby heat loss in the storage tank, polyurethane insulation with a density of 42 to 44 kg/m³ is used. This structure significantly limits heat loss and reduces annual energy consumption. For the outer casing, an electrostatic powder coating is applied to galvanized sheet metal for capacities from 100 to 600 L, while a special Winlex casing is used for capacities from 800 to 6,000 L. Surface cleaning with iron phosphate prior to electrostatic painting and a paint thickness of 50 to 80 µm improve the durability and aesthetics of the casing. Thus, the combination of high-quality insulation and a suitable outer casing increases comfort and reduces operating costs.

All MIT boilers are designed for a working pressure of 10 bar. During production, mechanical calculations are verified in accordance with EN 13445 and the European Directive 2014/68/EU on pressure vessels. TEMA principles are also applied to the design and manufacturing process. During production, SRM tubes are tested at maximum pressure to verify the integrity of the casing and coil. After coating and sheathing, final leak and safety checks are performed. This approach guarantees a high level of quality, ensuring longevity and operational safety.

Single-coil boilers are available in capacities from 100 to 6,000 L, double-coil boilers from 160 to 6,000 L, and electric boilers from 100 to 6,000 L. Depending on the project, an electric heating element can be added to double-coil boilers. The coil surface area is determined based on the heat source output and the desired thermal comfort; the hot water draw-off profile, peak demand, and return temperatures directly influence this choice. Interior coatings in enamel or epoxy are preferred depending on the water chemistry, hygiene requirements, and budget; exterior coatings in painted or Winlex material are preferred depending on architectural and site constraints.

For optimal selection, please provide us with the desired domestic hot water flow rate and daily/peak consumption profile, the supply water temperature and the desired temperature, the type and power of the heat source (boiler, heat pump, solar, electric), the number of coils required, the dimensions of the installation area, duct and door openings, water analysis (hardness, chlorides, etc.), your insulation and lining preferences, and the power supply characteristics for electric solutions. With this information, our team of engineers will optimize the capacity/coil combination and the most suitable material/lining options to quickly provide you with a precise proposal.