Solar Water Heaters
Werstahl - High quality Selective Solar Water Heaters
Werstahl Solar Water heaters, are produced in Greece, under strict standards and quality control. They follow the ISO 9001 Guidelines, are CE and Solar Keymark Certified.
Every Werstahl solar water heater, is thoroughly tested during and after production, to ensure maximum endurance and efficiency. Specificaly, each boiler tank is tested in 15bar pressure and each solar collector is being pressurized up to 12bar.
As a reassurance that you are purchasing a high quality product, we offer 5 years full warranty, covering everything that could ever happen to a solar system.
Technical Specifications & Dimentions
Boiler tanks
Boiler tank's specifications
| Type |
Closed circuit |
| Inner layer |
Enameled with Bayer's Duro Glass, heated to 830oC |
| Outer shell |
AISI type 304 Stainless Steel |
| Inner Steel thickness | 2.5mm European Steel 1204 V.E. |
| Insulation | 60mm thick Polyurethane > 40kg/m3 |
| Connections | Bronze 3/4'' & 1/2'' |
| Electric heater |
4kw with safety thermostat |
Solar Collectors
Solar Collector's specifications
| Type |
Selective with aluminum stripes |
| Welding |
Laser technique |
| Hydroskeleton | Copper tubes |
| Copper tube diameter |
8mm Vertical / 22mm Horizontal |
| Glass |
MISTLITE SECURITY 4.00mm |
| Insulation | Glass wool 40mm x 20kg |
| Copper Weld | with 5% Silver (USA) |
| Frame |
Aluminum monoblock profile |
| Silicone | 100% Neutral IG |
Solar Water Heater Types
Werstahl Solar water heaters come with two types of boilers, one that utilizes two energy sources and one that utilizes a third alternative source:
- Double energy: This type of solar system, produces hot water by utilizing the energy of the sun and also by the use of an electric heater, for the days that are very cloudy and the solar energy is not efficient.
- Triple energy: This type of solar water heater, has the ability to utilize a third energy source, through the use of an extra heat exchanger inside the water tank. This extra energy source could be a gas or oil boiler, a heat pump, a wood burner or anything similar.