| Nominal storage capacity | litres | 503 | 759 | 902 | 1399 | 2018 |
| Energy class | Cell | C |
| Coil tube Ø | mm | 32 | 42 |
| Lower coil surface area | m² | 1.8 | 2.7 | 3 | 3.7 | 4.1 |
| Upper coil surface area | m² | 1.2 | 1.5 | 1.7 | 2.1 | 2.3 |
| Coil maximum operating temperature | °C | 110 |
| Coil maximum operating pressure | bar | 12 |
| Tank (secondary) maximum working temperature | °C | 95 |
| Tank (secondary) maximum working pressure | bar | 6 |
| Weight (empty/full) | kg | 138/641 | 190/949 | 220/1122 | 285/1683 | 415/2433 |
| Heat up time 50°C ΔT (immersion only) | hr | 3.6 | 6.6 | 1.8 | 2.8 | 4.4 |
| Immersion heater option (power/phase) | kW/ph | 3/1 | 12/3 |
| Standby loss at 65°C | kWh/24hr | 2.3 | 2.7 | 2.8 | 3.7 | 4.3 |
| Primary flow rate | l/s | 0.972 | 0.486 | 1.67 | 0.833 | 1.67 | 0.833 | 1.67 | 0.833 | 1.67 | 0.833 |
| m³/hr | 3.5 | 1.75 | 6 | 3 | 6 | 3 | 6 | 3 | 6 | 3 |
| Continuous DHW output @ 50°C ΔT (10/60°C) with primary 80°C on lower coil | litres/ hour | 663.2 | 604.4 | 1009.7 | 928.6 | 1108.3 | 1010.5 | 1360.2 | 1235.9 | 1632.1 | 1306.5 |
| 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 | 631.9 | 620.5 | 927.3 | 913.8 | 1111.4 | 1092.9 | 1498.7 | 1478 | 2290 | 2135.7 |
| Recovery time DHW @ 50°C ΔT (10/60°C) full tank without draw off with primary 80°C on lower coil | minutes | 46.3 | 54.2 | 52.5 | 60.1 | 50.9 | 59.4 | 66.6 | 78.5 | 89.6 | 107.6 |
| Nominal heat transferred by lower coil with primary 80°C and DHW @ 50°C ΔT (10/60°C) | kW | 34.8 | 31.7 | 58.0 | 53.3 | 63.6 | 58.0 | 78.0 | 70.8 | 93.6 | 74.6 |
| Continuous DHW output @ 50°C ΔT (10/60°C) with primary 80°C on upper coil | litres/ hour | 453.2 | 421.9 | 572.5 | 535.8 | 683.7 | 636.8 | 799.6 | 735.8 | 866.1 | 800.9 |
| 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 | 230.5 | 22.3 | 427.4 | 421.3 | 446.9 | 439.1 | 564.3 | 554.6 | 777.4 | 766.5 |
| Recovery time DHW @ 50°C ΔT (10/60°C) full tank without draw off with primary 80°C on upper coil | minutes | 24.0 | 26.0 | 39.4 | 43.5 | 33.3 | 37.1 | 37.5 | 42.2 | 50.6 | 57.2 |
| Nominal heat transferred by upper coil with primary 80°C and DHW @ 50°C ΔT (10/60°C) | kW | 26.2 | 24.3 | 33.0 | 30.8 | 39.3 | 36.6 | 45.6 | 42.1 | 49.8 | 46.0 |
| Continuous DHW output @ 50°C ΔT (10/60°C) with primary 80°C on the lower & upper coil | litres/ hour | 1176 | 1051 | 1530.9 | 1393.8 | 1865.3 | 1669.5 | 2060.4 | 1835.6 | 2379.2 | 2103.6 |
| 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 | 699 | 678.2 | 1014.2 | 989.6 | 1212.9 | 1180.3 | 1741.4 | 1703.9 | 2412.5 | 2368.6 |
| Recovery time DHW @ 50°C ΔT (10/60°C) full tank without draw off with primary 80°C on the lower & upper coil | minutes | 32.0 | 39.0 | 35.7 | 42.6 | 35.5 | 43.3 | 50.4 | 62.3 | 64.2 | 80.9 |
| Nominal heat transferred by the lower & upper coil with primary 80°C and DHW @ 50°C ΔT (10/60°C) | kW | 67.0 | 60.2 | 87.8 | 79.3 | 106.9 | 95.7 | 118.1 | 105.1 | 136.3 | 120.5 |
| Lower coil primary hydraulic resistance | kPa | 18.6 | 5.4 | 11.8 | 3.5 | 14.6 | 4.3 | 15.8 | 4.7 | 19.0 | 5.6 |
| Upper coil primary hydraulic resistance | kPa | 11.6 | 2.9 | 6.9 | 2.0 | 8.1 | 2.4 | 9.4 | 2.7 | 10.2 | 3.0 |
| Lower & upper coil primary hydraulic resistance | kPa | 30.2 | 8.3 | 18.7 | 5.5 | 22.7 | 6.7 | 25.2 | 7.4 | 29.2 | 8.6 |
