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,
    can be extended to 260 m² by cascading
  • including pre-programmed systems on SD card
Scheme ÜSTA L/XL
Memory loading ÜSTA XL

combination of tubra®-ÜSTA XL and ÜSTA stratification loading set 

  • ÜSTA stratified loading set:
    for buffer cylinder, assembly with 2x DN 25
    3-way changeover valves as double changeover incl. insulation
System ÜSTA XL
Typtubra®-ÜSTA-Ltubra®-ÜSTA-XL
NenngrößeDN 25DN 25
Nennleistung Low flow (18 l/m2h)
max 7K log Diff. prim. 60-34 °C / sek. 27-53 °C
45 kW65 kW
max. Kollektorfläche (Flachkollektor)90 m²130 m²
Solarpumpe (Primärseite)Wilo Para 15/8 iPWM2Wilo Para15/9 iPWM2
Speicherladepumpe (Sekundärseite)Wilo Para 15/7 iPWM2Wilo Para 15/8 iPWM2
Abmessungen H x B x T865 x 525 x 280 mm865 x 525 x 280 mm
max. Betriebsdruck primär6 bar6 bar
max. Betriebsdruck sekundär3 bar3 bar
max. Betriebstemperatur primär VL/RL140 / 120 °C140 / 120 °C
max. Betriebstemperatur sekundär110 °C110 °C
Anschlüsse primärG1 IGG1 IG
Anschlüsse sekundärG1 IGG1 IG
Schwerkraftbremse20 mbar20 mbar

tubra®-Selection of accessories

Product portfolio Solar thermal energy

Solar stations/transfer stations from tuxhorn are designed for solar loading of buffer storage tanks.

tubra-ÜSTA S / M

Nominal power
10 / 25 kW

see product

tubra-PGS 01

Rated power 13 kW
max. Collector area
Low 43 m² / High 26 m²

see product

tubra-PGS XL

Rated power 58 kW
max. Collector area
Low 116 m² / High 70 m²

see product