Condensing gas boiler, MCR3 evo 24T/SRK150MG package + reduction kit in shaft 7716670150KDZ

Package boiler system with enameled domestic hot water (DHW) storage tank and integrated manifold

The package includes a wall-mounted condensing gas boiler MCR3 evo 24T and an enameled domestic hot water (DHW) storage tank SRK150MG with a capacity of 150 liters, mounted directly beneath the boiler. The entire system is ready for installation—no additional component selection is required, and the integrated manifold ensures organized and safe hydraulic connection.

The boiler operates on natural gas but can be easily adapted for propane without replacing the conversion kit. It is compatible with various flue gas exhaust systems: horizontal or vertical air/flue duct (C10, C13, C33), chimney (B23p, C93), distributed system (C53), or collective system (C43p). The heat exchanger, made of aluminum-silicon alloy, is cast as a monoblock—resistant to boiler scale and covered by an 8-year warranty.

The burner modulates power from 24% to 100%, enabling precise matching of output to actual demand. Efficiency at low return temperatures (30°C) exceeds 110%, and seasonal heating efficiency reaches 94%. NOx emissions are below 50 mg/kWh—meeting the highest environmental standards.

The DHW storage tank features a spiral heat exchanger with a surface area of 1.14 m², through which heating water from the boiler flows. Domestic hot water is heated without direct contact with the heating circuit—this design prevents contamination and enables a DHW output of up to 825 l/h at an inlet temperature of 80°C. The tank is protected against corrosion by a magnesium anode, and its construction allows for installation of an auxiliary electric heating element as backup.

The hydraulic module includes an A-class modulating pump, a switching valve between the central heating (CH) and DHW circuits, a CH safety valve rated at 3 bar, and an expansion tank with a capacity of 8 liters—all integrated into a load-bearing frame. The control panel with backlit LCD is detachable and can be mounted either below the boiler or on the wall, providing access to basic settings and service menus.

Smart TC thermostat connectivity via Wi-Fi enables remote access to temperature settings, operation scheduling, and energy consumption monitoring. The boiler operates at a maximum working pressure of 3 bar; its dimensions (368 x 541 x 364 mm) and net weight of 25 kg make wall mounting feasible even in confined spaces.

The SRK150MG storage tank has a dry weight of 72 kg and is equipped with a drain valve and a 6-bar safety valve—ensuring safe operation. Heat loss in standby mode is only 0.035 kW, and noise level does not exceed 48 dB(A) at a distance of 1 meter.