tubra®-eTherm C
Power to heat
External electric heater for loading buffer storage tanks with target temperature for optimal storage stratification.
- heating power 9 kW ( 3 * 3 kW )
- intrinsically safe incl. thermostat, safety temperature limiter, pump control, power contactor
- optional reheating function
- applicable for external energy management systems for thermal storage of PV surplus power
- optimal layer loading for immediately usable heat
- complete use of the available storage capacity in contrast to heating rods
- hydraulic, thermal supplement for energy management systems from
my-PV, Fronius, solaredge, SMA, Varista
Power extension
eTherm cascade
combination of tubra®-eTherm P and tubra®-eTherm C
- total thermal power 12 kW
- stepless modulating
- recommended for buffer tanks from 1500 liters
- PV systems up to 30 kWp, incl. sensors and power electronics
- independent of the inverter or energy management systems
combination of tubra®-eTherm C and tubra®-eTherm C
- up to 50 stations in series connection possible
| Typ | tubra®-eTherm P | tubra®-eTherm C 3 / 9 | tubra®-eTherm S |
|---|---|---|---|
| Design | Heating water | Heating water | Drinking- or Heating water |
| VDE-compliant modulation | Yes | Yes | Yes |
| Usable storage capacity | 100% | 100% | 40 - 80 % |
| Target temperature control for use of accumulator layering | electronic | electronic | - |
| max. operating pressure | 3 bar | 3 bar | - |
| max. accumulator charging temperature | 80 °C | 80 °C | 80 °C |
| Rated output | 0 - 3 kW (13 A) | 3 kW (0,8 / 0,8 / 1,4 kW) 9 kW (3 x 3 kW) | 0 - 3 kW |
| Dimensions H x W x D | 605 x 400 x 240 mm | 605 x 400 x 240 mm | 226 x 302 x 84 mm |
| Electrical connection | 1-phase PE 230 V AC 50 – 60 Hz | C 3: 1-phase / C 9: 3-phase PE 230 V AC 50 – 60 Hz | 1-phase PE 230 V AC 50 – 60 Hz |
| Measurement | 3-phase | * | 3-phase |
| Required Conductor cross-section | 2,5 mm² | 2,5 mm² | 2,5 mm² |
| Rated capacity | 0,2 l | 0,2 l | - |
| Weight | 13 kg | 13 kg | 9 kg |
| Radiator | 0,1-0,8 kW / 0,8 kW / 1,4 kW | 0,8 / 0,8 / 1,4 kW / 3 x 3 kW | 3 kW |
| max. flow rate | 300 l/h | 900 l/h | - |
| Residual delivery head | 100 mbar | 100 mbar | - |
| Target temperature | 30 – 70 °C | 65 °C | - |
| Water connection | G1 AG, Rp 3/4 IG | Rp 3/4 IG | G1 1/2 |
| Circulation pump | Para 15/7 iPWM2 | Para 15/7 iPWM2 | - |
| Power consumption | 3 - 45 W | 3 - 45 W | < 1 W |
| Materials | Brass, stainless steel, copper | Brass, stainless steel, copper | - |
| Interfaces | V-BUS, PWM, S0, 0-10V and zero-potential contacts prepared for remote control and as a communication interface. | Pump connection 230 VAC PWM Heating connection 1 / 3-phase 230 VAC 50Hz, controller V-BUS, SD card | None |
Product portfolio Power to heat
Power to heat stations from tuxhorn store energy in heat accumulators with significantly higher storage capacities than in batteries. They are used exclusively for heating water by means of electric heating element in the flow-through principle.
