DEFRO DBE Optima 12: Product Overview & Application Range
The DEFRO DBE Optima 12 is a wall-mounted electric boiler with up to 12 kW for hydronic central heating systems. The heat output is provided in three stages of 4 / 8 / 12 kW and can thus be adjusted in steps to match the heating demand.
Technology & Equipment
The factory equipment includes a circulation pump, a 6-liter diaphragm expansion vessel, a safety valve, and the electronic control system. In addition, functions for frost protection support and for preventing pump standstill are available.
Everyday Benefits
Thanks to the hydraulic components already integrated in the unit, the DBE Optima can be compactly integrated into a suitably designed heating system. The staged heating output supports demand-based operation, while the control functions support ongoing system operation.
System Integration & Compatibility
The DBE Optima is intended for hydronic heating systems with radiators or underfloor heating and can also be operated together with another heat generator. DEFRO describes its use in closed and, when properly installed, also in open vented heating systems.
Technical Data at a Glance
| Nominal heat output |
12 kW |
| Power levels |
4 / 8 / 12 kW |
| Mains connection for filter/master data |
400 V / 3-phase / 50 Hz |
| Fusing |
20 A |
| Power consumption |
12 kW |
| Max. flow temperature |
80 °C |
| Max. operating pressure |
1.5 bar |
| Expansion vessel |
6 liters, integrated |
| Width |
385 mm |
| Height |
660 mm |
| Depth |
200 mm |
| Weight |
27 kg |
| Energy efficiency class |
D |
Installation
Wall mounting and fixed electrical connection. Electrical connection, fusing, hydraulics, and commissioning may only be carried out by qualified specialists in accordance with the manufacturer's documentation and applicable regulations.
Notes
For the 12 kW version, DEFRO documents, in addition to the standard 400 V three-phase connection, a single-phase connection option with 230 V and 63 A. For the shop and Searchanise master data, the approved standard image 400 V / 3-phase / 20 A is used. The actual connection type must be determined by a qualified electrician.
Scope of delivery
- 1 × DEFRO DBE Optima 12 electric boiler
Components integrated in the device are part of the factory equipment; additional system and connection components are only included if they are specified in the specific offer.