Two functions, one tank
Combines heating system buffer volume with flow-through domestic hot water preparation.
Hygienic Domestic Hot Water and Heating Buffer Tank
Solitank Series
The Solitank Series combines a heating water buffer with on-demand domestic hot water preparation through an AISI 316L stainless steel heat exchanger. Five nominal models—200, 300, 500, 800 and 1000 L—can be integrated with heat pumps and boilers.
3.8–8.7 m² exchanger area
AISI 316L stainless steel
6 bar working pressure
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Flow-through domestic hot water
Heating buffer tank
No anode required
Highlights
Hygienic hot water and a heating buffer in one.
Solitank stores heating circuit water and heats domestic water on demand as it passes through the stainless steel exchanger.
AISI 316L exchanger
The corrugated stainless steel domestic water exchanger offers 3.8–8.7 m² of surface area, depending on the model.
Five nominal models
200, 300, 500, 800 and 1000 L models have actual tank volumes of 170, 245, 460, 850 and 1030 L respectively.
Insulation and backup heat
200–500 L models use 50 mm PU insulation; the 800 and 1000 L models use 80 mm sponge insulation. An electric heater is optional.
Heating buffer and flow-through hot water.
Solitank provides heating buffer volume in heat pump systems while domestic water is heated on demand as it flows through the AISI 316L stainless steel exchanger.
Technical data
Solitank technical specifications.
| Specification / model | Solitank 200 L | Solitank 300 L | Solitank 500 L | Solitank 800 L | Solitank 1000 L |
|---|---|---|---|---|---|
| Energy efficiency class | C | C | D | E | E |
| Heat loss (W) | 74 | 85 | 140 | 195 | 220 |
| Nominal model capacity (L) | 200 | 300 | 500 | 800 | 1000 |
| Actual tank volume (L) | 170 | 245 | 460 | 850 | 1030 |
| Weight (kg) | 67 | 85 | 106 | 165 | 190 |
| Dimensions, height × diameter (mm) | 1200 × 540 | 1750 × 540 | 1700 × 750 | 1850 × 1010 | 2150 × 1010 |
| Max. permissible boiler water temperature (°C) | 95 | 95 | 95 | 95 | 95 |
| Max. tank working pressure (bar) | 6 | 6 | 6 | 6 | 6 |
| Insulation material | PU | PU | PU | Sponge | Sponge |
| Insulation thickness (mm) | 50 | 50 | 50 | 80 | 80 |
| Outer casing material | Static-painted galvanized steel sheet | Static-painted galvanized steel sheet | Static-painted galvanized steel sheet | Artificial leather | Artificial leather |
| Exchanger water volume (L) | 12 | 12 | 13.5 | 22.5 | 27.5 |
| Domestic water exchanger area (m²) | 3.8 | 3.8 | 4.3 | 7.2 | 8.7 |
| Max. exchanger working pressure (bar) | 6 | 6 | 6 | 6 | 6 |
| Feed water inlet / outlet | G 1 1/4″ | G 1 1/4″ | G 2″ | G 2″ | G 2″ |
| Underfloor heating inlet / outlet | G 1 1/4″ | G 1 1/4″ | G 2″ | G 2″ | G 2″ |
| Electric heater connection | G 1 1/4″ | G 1 1/4″ | G 2″ | G 2″ | G 2″ |
| Domestic water inlet / outlet | G 3/4″ | G 3/4″ | G 3/4″ | G 3/4″ | G 3/4″ |
| Sensor connection | G 1/2″ | G 1/2″ | G 1/2″ | G 1/2″ | G 1/2″ |
| Drain connection | G 1/2″ | G 1/2″ | G 1/2″ | G 1/2″ | G 1/2″ |
Technical notes
Model names indicate nominal classes; actual tank volumes are listed separately. The domestic water exchanger is AISI 316L stainless steel. The 200, 300 and 500 L models use 50 mm PU insulation; the 800 and 1000 L models use 80 mm sponge insulation. No anode is required. An electric heater is optional. G denotes the threaded connection size. Consult the current manufacturer documentation before installation.
Model names indicate nominal classes; actual tank volumes are listed separately. The domestic water exchanger is AISI 316L stainless steel. The 200, 300 and 500 L models use 50 mm PU insulation; the 800 and 1000 L models use 80 mm sponge insulation. No anode is required. An electric heater is optional. G denotes the threaded connection size. Consult the current manufacturer documentation before installation.
Application
How does Solitank work?
It buffers heating water and heats domestic water on demand.
Application
How does Solitank work?
Heating circuit water is stored in the tank. Domestic water is heated while flowing through the AISI 316L stainless steel exchanger inside it; a full tank of potable water is not stored.
Capacity
Which Solitank model should I choose?
Compare the 200, 300, 500, 800 and 1000 L nominal models.
Capacity
Which Solitank model should I choose?
Assess simultaneous hot water demand, heating load, heat pump flow rate and actual tank volume together. Actual tank volumes for the nominal 200/300/500/800/1000 L models are 170/245/460/850/1030 L respectively.
Maintenance
Does it need an anode?
The domestic water exchanger does not require an anode.
Maintenance
Does it need an anode?
The exchanger is made of AISI 316L stainless steel and the manufacturer states that no anode is required. A qualified technician should still check water quality, pressure and safety components in line with the product manual.
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