ÜSTA S/M ISO
    ÜSTA S/M ISO
ÜSTA S/M
    ÜSTA S/M
ÜSTA S/M without controller
    ÜSTA without controller

tubra®-ÜSTA S/M

Solar thermal energy

The solar transfer station for stratified loading

  • compact modular design
  • with PWM-controlled high-efficiency pumps
  • maximum solar collector area 50 m²
  • including pre-programmed systems on SD card
Scheme ÜSTA S/M
Memory Loading ÜSTA

combination of tubra®-ÜSTA 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
System ÜSTA S/M                                              
Typtubra®-ÜSTA-Stubra®-ÜSTA-M
Nominal sizeDN 20DN 20
Nominal capacity (18 l/m2h),
max 7K log Diff. prim. 60-34 °C
sec. 27-53 °C
10 kW25 kW
max. collector surface / cascaded
(flate plate)
20 m²50 m²
Solar pump (primary side)Para 15/7 iPWM2Para 15/8 iPWM2
Buffer load pump (secondary side)Para 15/7 iPWM2Para 15/7 iPWM2
Dimensions H x W x D575 x 400 x 275 mm575 x 400 x 275 mm
max. working pressure (primary)6 bar6 bar
max. working pressure (secondary)3 bar3 bar
max. working temperature
primary flow / return
140 / 120 °C140 / 120 °C
max. working temperature secondary110 °C110 °C
Connections (primary)G 3/4 IGG 3/4 IG
Connections (secondary)G1 ext., flat sealingG1 ext., flat sealing
Gravity brakes20 mbar 20 mbar

tubra® accessory selection

Product portfolio Solar thermal energy

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

tubra-ÜSTA L / XL

nominal power
45 / 65 kW

see product

tubra-PGS 01

nominal power 13 kW
max. collector area
low 43 m² / high 26 m²

see product

tubra-PGS XL

nominal power 58 kW
max. collector area
low 116 m² / high 70 m²

see product

Product image ÜSTA S M Iso 648
ÜSTA S / M
Product image ÜSTA S M 648
ÜSTA S / M
Product image ÜSTA S M without control Iso 648
ÜSTA S / M
Product image ÜSTA S M without controller 648
ÜSTA S / M
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