
Thermosyphon systems SUNSYSTEM TSS
Thermosyphon system TSS kit includes:
Solar flat-plate collectors SUNSYSTEM PK Select FP
Thermosyphon water tank SUNSYSTEM TSB
Support system for thermosyphon systems
Natural thermal convection of liquids
For inclined / flat roof
Cylinder type heat exchanger
Harp absorber pipe system
Protective solar glass

Due to their excellent absorptance rate of 95% flat-plate collectors SUNSYSTEM PK Select FP are the ultimate choice for domestic hot water supply and central heating support throughout the year.
The collector absorbs solar heat and emits it to the heat carrier circulating in the pipe harp.
The collector absorbs solar heat and emits it to the heat carrier circulating in the pipe harp.
Corrosion-free exploitation of water tank SUNSYSTEM TSB is ensured by titanium enamel and build-in magnesium anode. Operating pressure is 8 bars. Mantle(cylinder-type) heat exchanger operating at pressure 1 bar. Insulation of rigid PU with thickness of 50mm keeps warm the potable water into thermosyphon water tank. Optional equipment of TSB water tank: electric heater as a backup source of heat.


Made of hot-galvanized steel for ultimate corrosion resistance. Designed to resist severe meteorological conditions: Wind speed up to 150 km/h. Snow load up to 1.25 kN/m2 according to ENV 1991-1:3,4. Versions for flat roof and inclined roof


| TSS 150 | TSS 200 | TSS 300 | |||
|---|---|---|---|---|---|
| Thermosiphon system specification | 1x PK SL FP 2.4 | 2x PK SL FP 2.00 | 1x PK SL FP 2.4 | 2x PK SL FP 2.4 | |
| Inclined roof | |||||
| Height H/ Width D/ Length L | mm | 870/1550/2740 | 920/2330/2740 | 920/1630/2740 | 920/2060/2740 |
| Flat roof | |||||
| Height H/ Width D/ Length L | mm | 1900/1550/2300 | 1950/2330/2300 | 1950/1630/2300 | 1950/2060/2300 |
| Volume of heat carrier fluid | L | 17 | 30 | 25 | 30 |
| Overall weight excluding water load: inclined/flat roof | kg | 130/145 | 175/190 | 145/155 | 220/235 |
| Stainless corrugated pipe: Diameter/Insulation | V, ø/mm | DN ø12/13 | DN ø12/13 | DN ø12/13 | DN ø12/13 |
| Decorative corrugated pipe holder | W, mm | 2080 | 2080 | 2080 | 2080 |
| Safety valve | Z1, Z2 | 1/2″ / 1/2″ | 1/2″ / 3/4″ | 1/2″ / 3/4″ | 1/2″ / 3/4″ |
| Roof-top support system TSS for inclined roof | X | yes | yes | yes | yes |
| Roof-top support system TSS for flat roof | Y | yes | yes | yes | yes |
| Flat-plate solar collector specification | |||||
| Height A/ Width B/ Thickness C | mm | 2125/1248/90 | 2125/1020/90 | 2125/1248 | 2125/1020/90 |
| Type of collector connection | E | hollaender fitting 1/2” | hollaender fitting 1/2” | hollaender fitting 1/2” | |
| Inlet/Outlet of collector heat carrier | F / G | R ½” / R ½” | R ½” / R ½” | R ½” / R ½” | R ½” / R ½” |
| Water tank specification | |||||
| Length/Diameter | L/D, ø/mm | 1250/ø520 | 1340/ø580 | 1340/ø580 | 1750/ø580 |
| Cold water inlet / Hot water outler | J / K | R ½” / R ½” | R ¾” / R ¾” | R ¾” / R ¾” | R ¾” / R ¾” |
| Inlet/Outlet of heat carrier (mantle) | M / N | R ½” / R ½” | R ½” / R ½” | R ½” / R ½” | R ½” / R ½” |
| Capacity of water tank | L | 150 | 200 | 200 | 300 |
| Capacity of mantle | L | 6.9 | 8.1 | 8.1 | 11.2 |
| Air vent | O | R ½” | |||
| Expansion vessel: Connection / Capacity | Q | R ½” / 2L | R ½” / 2L | R ½” / 2L | R ½” / 2L |
| Anode | P1 / P2 | yes | yes | yes | yes |
| Recirculation | R | R ½” | R ½” | R ½” | |
| Electric heating element | U, kW/V | 3/~220 | 3/~220 | 3/~220 | 3/~220 |
