| Type | OG-05-205 | OG-05-305 | OG-05-405 | OG-05-505 |
| Tank Capacity (Lt.) | 200 | 300 | 400 | 500 |
| Type of Material | ST-37 | ST-37 | ST-37 | ST-37 |
| Max.Tank Pressure (Bar) | 10 | 10 | 10 | 10 |
| PU Insulation Thickness (mm) | 50 | 50 | 55 | 55 |
| Max.Operating Temperature (ᵒC) | 90 | 90 | 90 | 90 |
| Height (H) mm. | 1470 | 1710 | 1525 | 1825 |
| Diameter (D) mm. | DN 570 | DN 570 | DN 750 | DN 750 |
| Serpentine Surface Area (m2) | 2.1 | 3.2 | 3.8 | 4.2 |
| Serpentine Pipe Diameter (inch) | 1 | 1 | 5/4 | 5/4 |
| Circulation Pipe Diameter (inch) | 3/4 | 3/4 | 5/4 | 5/4 |
| Hot Water Pipe Diameter (inch) | 3/4 | 1 | 1 | 1 |
| Cold Water Pipe Diameter (inch) | 3/4 | 1 | 1 | 1 |
| Resistance Inlet (inch) | 6/4 | 6/4 | 6/4 | 6/4 |
| Sensor Inlet (inch) | 1/2 | 1/2 | 1/2 | 1/2 |
| Energy Efficiency Class | A/B/C | B/C | C | C |