| Nominal storage capacity | litres | 498 | 789 | 1038 | 1443 |
| Energy class | C |
| Coil tube Ø | mm | 32 | 42 |
| Lower coil surface area | m² | 1.8 | 2.7 | 3.5 | 3.8 |
| Upper coil surface area | m² | 1.0 | 1.6 | 1.8 | 1.9 |
| Coil maximum operating temperature | °C | 110 |
| Coil maximum operating pressure | bar | 12 |
| Tank (secondary) maximum working temperature | °C | 90 |
| Tank (secondary) maximum working pressure | bar | 10 | 8 |
| Weight (empty/full) | kg | 108 / 597 | 188 / 977 | 223 / 1261 | 318 / 1761 |
| Heat up time 50°C ΔT (immersion only) | hr | 3.6 | 6.6 | 1.8 | 2.8 |
| Immersion heater option (power/phase) | kW/ph | 3 / 1 | 12 / 3 |
| Standby loss at 65°C | kWh/24hr | 2.4 | 2.8 | 3.2 | 3.9 |
| Primary flow rate | l/s | 0.972 | 0.486 | 1.67 | 0.833 | 1.67 | 0.833 | 1.67 | 0.833 |
| m³/hr | 3.5 | 1.75 | 6 | 3 | 6 | 3 | 6 | 3 |
| Continuous DHW output @ 50°CΔT (10/60°C) with primary 80°C on lower coil | litres/hour | 696.5 | 634.6 | 1009.8 | 928.5 | 1291.1 | 1175.6 | 1360.2 | 1235.9 |
| 10 minute peak DHW draw off @ 50°C ΔT (10/60°C) with primary 80°C on lower coil and tank warmed @ 60°C | litres | 614.1 | 603.8 | 927.3 | 913.8 | 1253.2 | 1233.9 | 1675.4 | 1654 |
| Recovery time DHW @ 50°C ΔT (10/60°C) full tank without draw off with primary 80°C on lower coil | minutes | 50 | 58.4 | 55 | 64 | 56 | 65 | 78 | 92 |
| Nominal heat transferred by lower coil with primary 80°C and DHW @ 50°C ΔT (10/60°C) | kW | 40.5 | 36.9 | 58 | 53.3 | 74.1 | 67.4 | 78 | 70.8 |
| Continuous DHW output @ 50°C ΔT (10/60°C) with primary 80°C on upper coil | litres/hour | 399.0 | 369.7 | 572.5 | 535.8 | 683.7 | 636.8 | 720.3 | 670.0 |
| 10 min peak DHW draw off @ 50°C ΔT (10/60°C) with primary 80°C on upper coil and tank warmed @ 60°C | litres | 236.5 | 231.6 | 387.6 | 381.0 | 446.9 | 439.1 | 632.1 | 623.7 |
| Recovery time DHW @ 50°C ΔT (10/60°C) full tank without draw off with primary 80°C on upper coil | minutes | 29.2 | 32.7 | 32.0 | 36.0 | 37.1 | 41.7 | 41.0 | 46.0 |
| Nominal heat transferred by upper coil with primary 80°C and DHW @ 50°C ΔT (10/60°C) | kW | 23.2 | 21.5 | 33.0 | 30.8 | 39.3 | 36.6 | 41.4 | 38.5 |
| Continuous DHW output @ 50°C ΔT (10/60°C) with primary 80°C on the lower & upper coil | litres/hour | 1095.4 | 1004.3 | 1530.9 | 1393.8 | 1897.9 | 1697.6 | 2028.1 | 1808.0 |
| 10 minute peak DHW draw off @ 50°C ΔT (10/60°C) with primary 80°C on on the lower & upper coil and tank warmed @ 60°C | litres | 680.6 | 665.4 | 1014.2 | 989.6 | 1354.3 | 1320.9 | 1781.0 | 1744.3 |
| Recovery time DHW @ 50°C ΔT (10/60°C) full tank without draw off with primary 80°C on the lower & upper coil | minutes | 34.3 | 41.9 | 35.7 | 42.6 | 40.2 | 49.2 | 52.8 | 65.1 |
| Nominal heat transferred by the lower & upper coil with primary 80°C and DHW @ 50°C ΔT (10/60°C) | kW | 63.7 | 58.4 | 87.8 | 79.3 | 108.8 | 97.3 | 116.2 | 103.6 |
| Lower coil primary hydraulic resistance | kPa | 18.6 | 5.4 | 11.8 | 3.5 | 19.6 | 5.4 | 15.8 | 4.7 |
| Upper coil primary hydraulic resistance | kPa | 10.1 | 2.8 | 6.9 | 2.0 | 8.1 | 2.4 | 8.5 | 2.5 |
| Lower & upper coil primary hydraulic resistance | kPa | 28.7 | 8.2 | 18.7 | 5.5 | 27.7 | 7.8 | 24.4 | 7.2 |
