tubra®-ÜSTA L/XL
Solar thermal energy
The solar transfer station for stratified loading
- compact modular design
- with high-efficiency pumps
- maximum solar collector area 130 m²,
expandable to 260 m² by cascading - including pre-programmed systems on SD card
Memory loading
ÜSTA XL
combination of tubra®-ÜSTA XL and ÜSTA stratification loading set
- ÜSTA stratification loading set:
for buffer tank, assembly with 2x DN 25
3-way switching valves as double switching incl. insulation
| Typ | tubra®-ÜSTA-L | tubra®-ÜSTA-XL |
|---|---|---|
| Nominal size | DN 25 | DN 25 |
| Nominal capacity (18 l/m2h), max 7K log Diff. prim. 60-34 °C sec. 27-53 °C | 45 kW | 65 kW |
| max. collector surface / cascaded (flate plate) | 90 m² | 130 m² |
| Solar pump (primary side) | Wilo Para 15/8 iPWM2 | Wilo Para15/9 iPWM2 |
| Buffer load pump (secondary side) | Wilo Para 15/7 iPWM2 | Wilo Para 15/8 iPWM2 |
| Dimensions H x W x D | 865 x 525 x 280 mm | 865 x 525 x 280 mm |
| max. working pressure (primary) | 6 bar | 6 bar |
| max. working pressure (secondary) | 3 bar | 3 bar |
| max. working temperature primary flow / return | 140 / 120 °C | 140 / 120 °C |
| max. working temperature secondary | 110 °C | 110 °C |
| Connections (primary) | G1 IG | G1 IG |
| Connections (secondary) | G1 IG | G1 IG |
| Gravity brakes | 20 mbar | 20 mbar |
tubra® accessory selection
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Product portfolio Solar thermal energy
Solar stations/transfer stations from tuxhorn are designed for solar loading of buffer storage tanks.
