The DEX is a microprocessor‑controlled, pressure‑resistant instantaneous water heater designed for domestic use. It heats incoming mains water to a selectable temperature between 20 °C and 60 °C and can operate with inlet temperatures up to 70 °C, making it compatible with solar pre‑heating.
The manual covers safe installation in frost‑free rooms, wiring requirements, connection procedures, and regular maintenance. It also includes warranty registration details and troubleshooting guidance for common issues.
| Rated capacity / rated current | 48 kW – 27 kW (26 A – 39 A) |
|---|---|
| Electrical connection | 3/PE 380‑415 V AC (400 V AC) |
| Minimum cable size | 4 mm² (6 mm² for higher power) |
| Maximum flow rate | 2.5 – 8.0 l/min |
| Inlet temperature limit | < 70 °C |
| Temperature setting range | 20 °C – 60 °C |
| Weight (filled with water) | 3.70 kg |
| IP protection class | IP25 |
The selectable outlet temperature can be set between 20 °C and 60 °C using the keypad.