| Technical parameters | Model 1.4 kW | Model 2.3 kW | Model 3.6 kW |
| Type specification | VA113 | VA124 | VA136 |
| Voltage protection at 230V ~50 Hz | 6 [A] | 10 [A] | 16 [A] |
| Level of protection | IP 24 | IP 24 | IP 24 |
| Minimum water pressure | 0.05 bar | 0.05 bar | 0.05 bar |
| Thermostatic range of operation | from 20 °C to 80 °C | from 20 °C to 80 °C | from 20 °C to 80 °C |
| Anti frost safety operation | 7 °C | 7 °C | 7 °C |
| Thermal overload protection | 90 °C | 90 °C | 90 °C |
Time for temperature rise 30 °C - 65 °C | about 15.5 min | about 8.5 min | about 4.6 min |
Time for temperature rise 12 °C - 65 °C | about 21 min | about 12 min | about 8 min |
| Dimensions (h/w/d) mm | 35 / 25 / 23 | 35 / 25 / 23 | 35 / 25 / 23 |
| Weight | 5.8 kg | 5.8 kg | 5.8 kg |