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| Brand | Stiebel Eltron |
| Supplier code | 236740 |
| EAN Code | 4017212367407 |
| Discount group | 094 |
| Mounting method | Upper/lower structure |
| Width | 225 mm |
| Height | 466 mm |
| Depth | 116 mm |
| Weight | 3.1 kg |
| Nom. power | 27 kW |
| With tap/mixer tap | No |
| With display | Yes |
| Heating system | Bare wire |
| Type of arrangement | Electronic |
| Safety shutdown | Electronic |
| Asset management | Electronic |
| Temperature indication | Digital |
| Energy efficiency class | A |
| Suitable for KNX | No |
| Nom. content | 0.4 l |
| Operation | Manually |
| Pressure vessel material | Plastic |
| Suitable for preheated water | Yes |
| Connection capacity | 27 - 27 |
| Degree of protection (IP) | IP25 |
| Nom. voltage 1 | 380 V |
| Nom. voltage 2 | 400 V |
| Nom. diameter hot tap water | 1/2" (15) |
| Energy efficiency class (812/2013/EU) | A |
| Nom. diameter cold tap water | 1/2" (15) |
| Suitable for plastic pipe | Yes |
| Max. working pressure | 10 bar |
| External pipe diameter cold tap water | 21.5 mm |
| External pipe diameter hot tap water | 21.5 mm |
| Cold tap water connection | External thread |
| Hot water connection | External thread |
| Max. permissible operating pressure | 10 bar |
The STIEBEL ELTRON DEL 18/21/24 Plus comfort instantaneous water heater offers desired temperatures up to the maximum output, accurate to the degree. The closed, pressure-resistant appliance also supplies multiple taps with hot water in a convenient and energy-saving manner, for example in the bathroom and kitchen. The electronically controlled appliance is suitable for all commercially available pressure taps. High level of operating convenience with under-sink installation, as the top cover and the control unit can be rotated.
Comfort features
The 3i technology saves up to 30% energy and water through electronic power control. Nevertheless, the same 3i technology ensures that the desired temperature is achieved up to the power limit, accurate to the degree. The desired temperature, current consumption and the status and service display are easy to read on the multifunctional display with backlight. The desired temperature is continuously and digitally set using a rotary knob. For the shower area, this is possible very precisely in 0.5° C increments. Memory function for two programmable desired temperatures. An LED indicator warns of scalding at temperatures above 43° C.
The main features
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