• Best quality
  • Quick assembly
  • Longevity





SolexMaxi TW up to 100 m²

Field of application: for charging buffer storage tanks
Application range: up to 100 m² collector surface
with heat quantity measurement according to the BAFA promotion directive for solar thermal systems
The CE-conformity of the installation has been certified according to DIN EN 60335.

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Our offer is exclusively aimed at corporate clients.

Operating data
Max. operating pressure primary: 6 bar
Max. operating pressure secondary: 10 bar
Max. operating temperature primary: 120 °C
Max. operating temperature secondary: 95 °C
Controller: SC5.14
Check valves: primary: 2 x 200 mm wc / secondary: 1 x 150 mm wc
Pressure gauge: 0-6 bar, resistant to high temperatures
Shut-off valves: Ball valves and piston valves
Sensors: 2 x Pt1000 (integrated) / 2 x Pt1000 (enclosed)
Heat exchanger: B25TH, 60 plates
Safety valve: primary: 6 bar / secondary: 10 bar
FlowRotor: 2-50 l/min
Airstop: yes
Number of check valves: 3
Height: 829 mm
Width: 674 mm
Nominal diameter: DN 25 (1")
Depth: 298 mm
Installation length: 716 mm
Centre distance: 120 mm
Connection primary: 1" int. thread
Connection secondary: 1 ¼“ ext. thread
Valves and fittings: Brass
Gaskets: EPDM / AFM34
Insulation: EPP
Piping: Stainless steel
Check valves: Brass
Heat exchanger: Solder: copper,Plates + connecting pieces: stainless steel
Design data
Operating mode LowFlow: 15 l/(m²xh)
Operating mode HighFlow: 25 l/(m²xh)
Collector surface LowFlow: 100 m²
Collector surface HighFlow: 80 m²
Output LowFlow: 50 kW
Temperature difference LowFlow: 33 K
Temperature difference HighFlow: 12 K
Boundary conditions: Irradiation = 800 W/m²; efficiency ᵑ0.05 = 65%
The compact and completely premounted transfer station for high-flow operation, completely insulated, with generously dimensioned stainless steel plate heat exchanger, with preset and prewired controller, assures a simple and quick installation as well as a safe commissioning.

Connections primary: 1" internal thread, connections secondary: 1 ¼" external thread

All fluid-carrying parts made of brass or stainless steel, fully assembled - self-sealing or flat-sealing

Premounted on steel wall bracket
can be easily mounted to the wall Full port ball valves or piston valves

Check valve in the return ball valve, can be opened, 200 mm wc, especially for solar systems, prevents unwanted circulation.

Solar circuit with large ball valve handles
easy handling, visible closing position, with integrated full metal thermometer 0-160 °C, can be pulled off, with immersion sleeve integrated in the ball valve, piston valves in the secondary circuit

Airstop in the flow line
for permanent deaeration of the heat transfer medium

Basic version with solar circulation pump by Grundfos, Premium version with high-efficiency pump by Wilo (PWM for speed control), already installed and prewired, adapted to the performance of the transfer station, pumps can be isolated completely, no draining necessary during pump service

Premium version: electronic flow rate sensors for the performance depending on speed control of the secondary pump as well as heat quantity balancing (secondary), pressure sensors with evaluation unit for system monitoring

Flush and fill unit integrated
two fill and drain valves (on the safety group and on the elbow gland of the heat exchanger) permit filling and flushing of the primary circuit as well as only the heat exchanger, secondary circuit with vent valve at the highest point of the heat exchanger

Solar safety group
solar pressure relief valve 6 bars, pressure gauge resistant to high temperature 0-6 bars with valve, flat sealing connection for an expansion tank, secondary side with pressure relief valve 10 bars

Compact design insulation with optimised function
made of durable elastic EPP, entirely insulated valves and fittings - excellent ventilation and cooling of the pumps, minimal heat losses