Indirect fired Fast boiler and buffer tank in 1 (housing) CDWT-250L Duplex 2205 Boiler tank 190 liters, Buffer tank 60 liters, with coil(Spiral) Heat pump boiler

CDWT-250L - Fast Boiler Tank & Buffer Tank in One Housing - 250 Liter (190L + 60L), Duplex 2205 stainless steel, with Coil for Heat Pump

Coolmark's CDWT-250L Fast Boiler & Buffer Tank Combination offers a powerful, compact and energy-efficient solution for modern heat pump systems. This unit combines a 190-liter boiler tank and a 60-liter buffer tank in one rugged Duplex 2205 stainless steel enclosure. Ideal for installations where space is limited but performance must not be compromised.

Both tank parts are made of Duplex 2205 stainless steel, which ensures excellent corrosion protection, long life and reliability under pressure. This 2-in-1 unit is perfect for both residential applications and light commercial installations.

The integrated spiral heat exchanger (coil) has a surface area of 1.7 m² and is optimized for use with low-temperature sources, such as air-to-water heat pumps. As a result, domestic hot water is heated quickly and efficiently even at low flow temperatures.

The unit is equipped all around with 50 mm high-density PUR rigid foam insulation. This minimizes heat losses and contributes to a sustainable and energy-efficient heating system. Its compact dimensions and smart connection options make this boiler easy to install in smaller technical rooms.

Key Benefits:

• 2-in-1 system: 190L boiler tank + 60L buffer tank in one housing

• Made of Duplex 2205 stainless steel: corrosion-resistant, pressure-resistant and potable water suitable

• Spiral heat exchanger (1.7 m²): fast heat transfer, optimized for heat pumps

• 50 mm PUR insulation: excellent thermal protection, low standstill losses

• Compact & efficient design: ideal for homes or technical areas with limited space

• Multiple connection options: flexible integration into existing and new systems

Technical specifications (summary):

• Total volume: 250 liters

• Boiler tank: 190 liters

• Buffer tank: 60 liters

• Material: Duplex 2205 stainless steel

• Insulation: 50 mm PUR rigid foam

• Spiral surface area: 1.7 m²

• Heat exchanger output at 80/10/45 °C: approx. 18.7 kW

• Max. working pressure (tank): 10 bar

• Max. working pressure (coil): 16 bar

• Max. temperature: 95 °C

• Dimensions (h x Ø): 1350 x 650 mm

• Connections: G 1¼", G 1", sensor inputs

Applications:

• Air-to-water and soil-to-water heat pumps

• Solar water heating systems and hybrid installations

• Residential construction, apartments, commercial construction

• Renovations, compact technical rooms

• Small business and agricultural applications

The CDWT-250L is the choice for those looking for a durable, compact and powerful boiler solution for heat pump systems. With high-quality materials, efficient heat transfer and smart construction, this unit is prepared for tomorrow's energy demands.