They are the most popular on the market, simple to install and use heat exchangers, designed for water 
heating with coil of U-shape They are designed to operate at pressures of 0.6 MPa. They can be installed in all buildings with central heating network. We offer additionally an electric heater to reheat the water. The coil is shaped like the letter "U". To increase the heating surface of the coiled pipe and thus shorten the duration of heating water, we provide a double coil heat exchangers.
We can produce the device according to individual dimensions of the customer.
Product specification:
| WYMIAR | V | D | H | h | h1 | h2 | h3 | Masa |
| TYP | [l] | [mm] | [kg] | |||||
| WB 0.06 | 60 | 360 | 700 | 470 | 170 | 480 | 230 | |
| WB 0.08 | 80 | 360 | 950 | 700 | 320 | 630 | 230 | |
| WB 0.1 | 100 | 360 | 1000 | 780 | 320 | 710 | 230 | |
| WB 0.12 | 120 | 400 | 1000 | 800 | 320 | 730 | 260 | |
| WB 0.15 | 150 | 400 | 1200 | 990 | 320 | 920 | 260 | |
| WB 0.2 | 200 | 450 | 1250 | 990 | 320 | 920 | 280 | |
| WB 0.3 | 300 | 550 | 1320 | 1100 | 420 | 1130 | 340 | |
