ECO solar water heaters
A selective aluminium-titanium collector and a Duro Glass enamelled tank, on a closed circuit that withstands −47°C. With a 3.5kw electric element as a second source.
- Selective collectorFull-plate aluminium-titanium absorber, copper risers.
- Duro Glass enamelFired at 850°C, for hygienic water.
- Closed circuitWith antifreeze, down to −47°C.
- Tested at 15barWorking pressure up to 10bar.
- Sun and electricityA 3.5kw element as a second source.
- Made in GreeceA+ energy label, collectors certified to Solar Keymark.
Hot water from the sun, all year round.
The Mastersol ECO is a closed-circuit solar water heater. The collector and the jacket around the tank are filled with antifreeze, which carries the sun's heat to your hot water. That is why the system withstands frost down to −47°C.
The tank is made of 2.5mm European steel, with Bayer Duro Glass enamel fired at 850°C inside, a magnesium anode against corrosion and 5cm of rigid polyurethane insulation. Every tank is pressure-tested at 15bar.
The collector has a full-plate selective aluminium-titanium absorber, copper risers and 3.2mm tempered safety glass that stands up to hail and heavy rain.
It is dual energy: the sun heats the water and, when needed, the 3.5kw electric element.
What makes the difference
- Full-plate absorberA 0.40mm selective aluminium-titanium sheet across the whole collector, on Ø22 & Ø8 copper risers with laser welding. On top, 3.2mm tempered safety glass that stands up to hail and heavy rain.
- Tank with heat-exchange jacket2.5mm European steel, MAG welded, with Bayer Duro Glass enamel fired at 850°C inside. The 1.5mm steel jacket covers 80% of the tank length. 5cm of rigid polyurethane keeps heat losses to a minimum.
- One-piece aluminium frameA one-piece aluminium frame with a 1.25mm profile, a 0.5mm galvanised steel back and double 4cm mineral wool insulation. 100% neutral silicone.
- Closed circuit with antifreezeThe collector and the jacket are filled with antifreeze, so the system withstands frost down to −47°C. On top of the tank are the fill and vent points of the circuit and the seat of its safety valve (1.5-3 bar).
- Made in GreeceMastersol solar water heaters are made in Greece. The heavy-duty brass connections are marked on the tank: hot water outlet and the connection to the collectors.
Models
Dual energy · 100–300 lt
All models share the same Duro Glass tank, the same selective collector and a 3.5kw element. The litres and the collector area change: choose by the number of people and where you live.
| Model | Tank · collectors | Collector dimensions | Tank length | Tank diameter | Jacket capacity | Tank weight | Collector weight |
|---|---|---|---|---|---|---|---|
| MSG100-15 | 100 lt · 1.5 m² | 1 collector, 1.5 × 1.0 m | 100cm | 50cm | 5 lt | – | 26kg |
| MSG120-15 | 120 lt · 1.5 m² | 1 collector, 1.5 × 1.0 m | 108cm | 50cm | 6 lt | 45kg | 26kg |
| MSG120-2 | 120 lt · 2.0 m² | 1 collector, 2.0 × 1.0 m | 108cm | 50cm | 6 lt | 45kg | 34.3kg |
| MSG160-2 | 160 lt · 2.0 m² | 1 collector, 2.0 × 1.0 m | 128cm | 50cm | 8 lt | 55kg | 34.3kg |
| MSG160-25-1 | 160 lt · 2.5 m² | 1 collector, 2.0 × 1.25 m | 128cm | 50cm | 8 lt | 55kg | 41kg |
| MSG160-3 | 160 lt · 3.0 m² | 2 collectors, 1.5 × 1.0 m · total width 2.12 m | 128cm | 50cm | 8 lt | 55kg | 2 × 26kg |
| MSG200-3 | 200 lt · 3.0 m² | 2 collectors, 1.5 × 1.0 m · total width 2.12 m | 128cm | 58cm | 9 lt | 68kg | 2 × 26kg |
| MSG200-4 | 200 lt · 4.0 m² | 2 collectors, 2.0 × 1.0 m · total width 2.12 m | 128cm | 58cm | 9 lt | 68kg | 2 × 34.3kg |
| MSG300-4 | 300 lt · 4.0 m² | 2 collectors, 2.0 × 1.0 m | 178cm | 58cm | 18 lt | 100kg | 2 × 34.3kg |
| MSG300-5 | 300 lt · 5.0 m² | 2 collectors, 2.0 × 1.25 m · total width 2.62 m | 178cm | 58cm | 18 lt | 100kg | 2 × 41kg |
| MSG300-55 | 300 lt · 5.5 m² | 2 collectors, 2.0 × 1.36 m · total width 2.84 m | 178cm | 58cm | 18 lt | 100kg | – |
Triple energy · 100–300 lt
All models share the same Duro Glass tank, the same selective collector and a 3.5kw element. The litres and the collector area change: choose by the number of people and where you live.
| Model | Tank · collectors | Collector dimensions | Tank length | Tank diameter | Jacket capacity | Tank weight | Collector weight |
|---|---|---|---|---|---|---|---|
| MSG100-15t | 100 lt · 1.5 m² | 1 collector, 1.5 × 1.0 m | 100cm | 50cm | 5 lt | – | 26kg |
| MSG120-15t | 120 lt · 1.5 m² | 1 collector, 1.5 × 1.0 m | 108cm | 50cm | 6 lt | 45kg | 26kg |
| MSG120-2T | 120 lt · 2.0 m² | 1 collector, 2.0 × 1.0 m | 108cm | 50cm | 6 lt | 45kg | 34.3kg |
| MSG160-2t | 160 lt · 2.0 m² | 1 collector, 2.0 × 1.0 m | 128cm | 50cm | 8 lt | 55kg | 34.3kg |
| MSG160-25t-1 | 160 lt · 2.5 m² | 1 collector, 2.0 × 1.25 m | 128cm | 50cm | 8 lt | 55kg | 41kg |
| MSG160-3t | 160 lt · 3.0 m² | 2 collectors, 1.5 × 1.0 m · total width 2.12 m | 128cm | 50cm | 8 lt | 55kg | 2 × 26kg |
| MSG200-3t | 200 lt · 3.0 m² | 2 collectors, 1.5 × 1.0 m · total width 2.12 m | 128cm | 58cm | 9 lt | 68kg | 2 × 26kg |
| MSG200-4t | 200 lt · 4.0 m² | 2 collectors, 2.0 × 1.0 m · total width 2.12 m | 128cm | 58cm | 9 lt | 68kg | 2 × 34.3kg |
| MSG300-4t | 300 lt · 4.0 m² | 2 collectors, 2.0 × 1.0 m | 178cm | 58cm | 18 lt | 100kg | 2 × 34.3kg |
| MSG300-5t | 300 lt · 5.0 m² | 2 collectors, 2.0 × 1.25 m · total width 2.62 m | 178cm | 58cm | 18 lt | 100kg | 2 × 41kg |
| MSG300-55t | 300 lt · 5.5 m² | 2 collectors, 2.0 × 1.36 m · total width 2.84 m | 178cm | 58cm | 18 lt | 100kg | – |
Manufacturer’s data. Data sheets (PDF) and certificates on request.
Questions
Which size do I need?
Mastersol sizes its systems for a normal use of 40 litres of hot water at 40°C per person. As a guide: 1 person, 100 litres with 1.5 m² anywhere in Greece. 2 people, 120 litres with 2.0 m² (1.5 m² is enough in southern Greece). 3 people, 120 litres with 2.0 m², or 160 litres with 2.0 m² in northern Greece. 4 people, 160 litres with 2.5 m² (2.0 m² in the south). 5 people, 200 litres with 3 m², or 4 m² in northern Greece. If you are not sure, call us.
What does dual energy mean?
That the water is heated in two ways: by the sun and, when needed, by the 3.5kw electric element. If you want your heating boiler to heat it too, there are triple-energy models.
Does it withstand frost?
Yes. It runs on a closed circuit with antifreeze and withstands temperatures down to −47°C. The antifreeze is checked and topped up every year, depending on the area.
Is there a version with a horizontal collector?
Yes, the ECO Horizontal, from 120 to 200 litres with one collector. With the collector laid horizontally the system is lower and wider; the collector output stays the same.
What warranty does it have?
5 years on the cylinder, serviced every 2 years. 10 years if you also fit an overheat valve (94°C / 6 bar), a 10 bar closed expansion vessel and a closed-circuit expansion vessel, with a yearly service. 15 years on the collectors and 1 year on the electrical parts. The warranty covers parts, not labour or transport.
Prices and availability for distributors
Send us your company details and the models you are interested in.