| Content | | Liter | 300 | 400 | 500 |
| Cold water drain | AF | 1" | 138 | 143 | 143 |
| Solar return | RS1 | 1" | 278 | 303 | 303 |
| Sensor sleeve | 1 | Ø 20 | 392 | 423 | 423 |
| Solar flow | AS1 | 1" | 798 | 763 | 848 |
| Heating flow | AS2 | 1" | 1.228 | 1.183 | 1.420 |
| Circulation | 2 | 1" | 848 | 833 | 973 |
| Sensor sleeve | 3 | Ø 20 | 1.062 | 1.023 | 1.259 |
| Heating return | RS2 | 1" | 898 | 903 | 1.098 |
| Hot water | AC | 1" | 1.398 | 1.368 | 1.633 |
| Flange Ø 180 mm | FL | mm | 358 | 376 | 376 |
| Connection for electric heater | 4 | 1 1/2" | 848 | 833 | 973 |
| Thermometer | 5 | 1/2" | 1.268 | 1.225 | 1.490 |
| Height | | mm | 1.532 | 1.502 | 1.777 |
| Diameter without insulation | | mm | 550 | 650 | 650 |
| Diameter with insulation | | mm | 650 | 750 | 750 |
| Max. Operating pressure | | bar | 6 | 6 | 6 |
| Max. Operating temperature | | °C | 95 | 95 | 95 |
| Heating surface up / down | | m² | 1 / 1,4 | 1 / 1,5 | 1,2 / 1,8 |
| Energy efficiency class | | | B | C | C |
| Standby loss | | kWh/24h | 1,68 | 1,90 | 2,25 |
| Weight | | kg | 124 | 146 | 160 |
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