
With a single coil
All the water is heated right to the bottom
- Volume: 100—5000 L
- Models: 14
- Vessel: 6 bar
A fully cylindrical three-pass boiler running on liquid and gaseous fuel. Turbulators in the flue tubes keep the heat inside the circuit, while a microprocessor panel controls the burner and the pump system from a single point.

A fully cylindrical design and turbulators in the flue tubes — combustion efficiency up to 95%.
Microprocessor-based — it controls both the burner and the pump system from one point.
A mineral insulation agent on the body and front cover.
Standard build is 4 bar, up to 10 bar on request.
The front covers open — no need to remove the burner.
Large sizes are assembled at the customer's site.
The full model range. The table scrolls horizontally.
| Model | VMEX 80 | VMEX 100 | VMEX 125 | VMEX 150 | VMEX 175 | VMEX 200 | VMEX 250 | VMEX 300 | VMEX 350 | VMEX 400 | VMEX 450 | VMEX 500 | VMEX 600 | VMEX 700 | VMEX 800 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Output (thous. kcal/h) | 80 | 100 | 125 | 150 | 175 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 |
| Output (kW) | 93 | 116 | 145 | 174 | 203 | 232 | 290 | 348 | 406 | 464 | 522 | 580 | 696 | 812 | 928 |
| WidthA (mm) | 707 | 707 | 707 | 757 | 757 | 757 | 880 | 880 | 880 | 984 | 984 | 984 | 1140 | 1140 | 1140 |
| HeightH (mm) | 757 | 757 | 757 | 807 | 807 | 807 | 930 | 930 | 930 | 1034 | 1034 | 1034 | 1160 | 1160 | 1160 |
| Height H1H1 (mm) | 933 | 933 | 933 | 983 | 983 | 983 | 1107 | 1107 | 1107 | 1211 | 1211 | 1211 | 1341 | 1341 | 1341 |
| LengthL (mm) | 1299 | 1299 | 1539 | 1544 | 1744 | 1744 | 1744 | 2039 | 2039 | 1939 | 1939 | 2039 | 2311 | 2311 | 2561 |
| Base lengthL1 (mm) | 742 | 742 | 982 | 987 | 1187 | 1187 | 1187 | 1482 | 1482 | 1384 | 1384 | 1482 | 1734 | 1734 | 1984 |
| Tube diameterE (mm) | 200 | 200 | 200 | 200 | 200 | 200 | 300 | 300 | 300 | 300 | 300 | 300 | 350 | 350 | 350 |
| Tube heightH2 (mm) | 547 | 547 | 547 | 597 | 597 | 597 | 670 | 670 | 670 | 772 | 772 | 772 | 864 | 864 | 864 |
| Hot-water outlet / inletF (DN) | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 80 | 80 | 100 | 100 | 125 | 125 | 125 |
| Water consumption (L) | 118 | 118 | 145 | 160 | 191 | 185 | 285 | 350 | 330 | 383 | 371 | 396 | 620 | 586 | 660 |
| Dry weight (kg) | 360 | 370 | 425 | 460 | 510 | 530 | 635 | 745 | 800 | 900 | 945 | 985 | 1305 | 1385 | 1550 |
| Safety valveS (in) | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1¼″ | 1½″ | 1½″ | 1½″ |
| Water fill / drainS1 (in) | ½″ | ½″ | ½″ | ½″ | ½″ | ½″ | ½″ | ½″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ |
| Condensate drainC (in) | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ |
| Back pressure (mbar) | 0.5 | 1.2 | 1.3 | 2.2 | 2.5 | 3.3 | 3 | 2.8 | 2.5 | 3 | 3.5 | 4.3 | 3.8 | 5.2 | 5.4 |
| Working pressure (bar) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Model | VMEX 900G | VMEX 1000G | VMEX 1250G | VMEX 1500G | VMEX 1750G | VMEX 2000G | VMEX 2500G | VMEX 3000G | VMEX 3500G | VMEX 4000G | VMEX 5000G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Output (thous. kcal/h) | 900 | 1000 | 1250 | 1500 | 1750 | 2000 | 2500 | 3000 | 3500 | 4000 | 5000 |
| Output (kW) | 1044 | 1160 | 1453 | 1740 | 2030 | 2320 | 2900 | 3480 | 4060 | 4340 | 5800 |
| WidthA (mm) | 1463 | 1463 | 1463 | 1463 | 1654 | 1654 | 1654 | 1782 | 1880 | 1940 | 2056 |
| HeightH (mm) | 1483 | 1483 | 1483 | 1483 | 1674 | 1674 | 1688 | 1802 | 1900 | 1980 | 2089 |
| Height H1H1 (mm) | 1664 | 1664 | 1664 | 1855 | 1855 | 1971 | 1971 | 1971 | 2083 | 2315 | 2135 |
| LengthL (mm) | 2549 | 2549 | 2549 | 2754 | 3354 | 4060 | 4060 | 4060 | 5085 | 5085 | 5160 |
| Base lengthL1 (mm) | 1984 | 1984 | 1984 | 2189 | 2784 | 3184 | 3474 | 4515 | 4515 | 4620 | 4620 |
| Tube diameterE (mm) | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 650 | 650 | 650 |
| Tube heightH2 (mm) | 1078 | 1078 | 1078 | 1078 | 1264 | 1510 | 1510 | 1510 | 1750 | 1750 | 1900 |
| Hot-water outlet / inletF (DN) | 125 | 125 | 125 | 125 | 150 | 200 | 200 | 200 | 200 | 200 | 200 |
| Water consumption (L) | 1368 | 1368 | 1368 | 1368 | 2363 | — | — | — | — | — | — |
| Dry weight (kg) | 2180 | 2360 | 2510 | 3450 | 3855 | 4430 | 4945 | 6555 | 6900 | 7420 | 8172 |
| Safety valveS (in) | 2″ | 2″ | 2″ | 2½″ | 2½″ | 2½″ | 2½″ | 2½″ | 2½″ | 3″ | 3″ |
| Water fill / drainS1 (in) | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1½″ | 1½″ | 1½″ | 1½″ | 1½″ |
| Condensate drainC (in) | 1″ | 1″ | 1″ | 1″ | 1″ | 1″ | 1½″ | 1½″ | 1½″ | 1½″ | 1½″ |
| Back pressure (mbar) | 5.2 | 5.2 | 5.8 | 5.8 | 6.2 | 6.2 | 6.5 | 6.7 | 6.7 | 6.6 | 7 |
| Working pressure (bar) | 4 | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 6 | 6 | 6 |
Output is given in thousands of kcal/h. A dash means the parameter is not stated in the manufacturer's source documentation.
Send us your boiler-room parameters — we'll suggest a model, size the output and prepare a commercial offer.