Specifications
solar water heater
(1)CE,ISO,SGS
(2)low pressure
(3)High Quanlity 15 years at least
Non-pressurized solar water heater
(1) Specifications:
1. Outer tank: colorful steel
2. Inner tank: SUS304-2B or 316 food-grade stainless steel thickness≥0.4
3. Sealing Ring: Excellenrt Silica gel material. life is twice longer than common Silica gel.
4. Vacuum tuber: High-efficient vacuum tube
*High-Efficient heat-collection function: New generation of vacuum tubes, use molecular nanotechnology, greatly enhance heat-absorption by 20 percent, higher water temperatures.
*Adopts the international advanced film-coating technology, solar thermal conversion rates extremely high, absorbing heat even if the cloud weather.
*Vacuum tube strictly choose high-borosilicate glass 3.3 so that it has low coefficient of thermal expansion and higher intensity. Hail-resistance:25mm
5. Insulation: 55mm polyurethane keep heating do with aging the cell is small and uniform reasonable density excellent insulation
6. Frame: thicker galvanized steel , Anti-corrosive.and Anti-ultraviolet, installed in the slope and flat place freely.Strengthen hail-resistance. Angle:20-80 degree.Through oxidation process.It increase wind resistance.,life is longer than common frame. Beautiful appearance.
7. Automatic operation: Digital controller shows water temperature and water lever,water loading automatically ,heating automatically ,controlling automatically.
Description | Solar W ater H ea ter |
| Material of out tank | 0.4mm thickness color steel |
| Material of inner tank | Food grade 0.4mm thickness SUS304 stainless steel |
| Tank insulating layer | 55mm 45kg/m³ high-density polyurethane foamed |
| Inlet and outlet hole | Male G 1/2, 3/4 |
| Max pressure | 0.05 Mpa |
| Solar collector tube | 3.3 Borosilicate glass with N/Al coating |
| Thickness of glass tube | 1.6mm |
| Vacuum tube tightness | P≤0.005 Pa |
| Absorption | as=0.93-0.96 (AM1.5) |
| Emission ratio | εh=0.04-0.06 (80C±5C) |
| Idle sunning property parameters | Y=220~260m2.C/KW |
| Average heat loss coefficient | ULT=0.6~0.7W/(m2.C) |
| Bracket: | 2.0mm thickness aluminum alloy |
| Structure of tank | 5 holes for air vent,overflow,water inlet and outlet,electric heater |
| Welding: | Argon arc welding |
| Fastening pieces: | Made of stainless steel screw |
| Absorber area | 2. 249 m² |
| Tube quantity | 20 tube 58x1,800mm |
| Tank capacity | 200L |
| Assistant tank | 5L |
From its early beginnings in 2000 Redao (originally called Alinsidun Technologies) is a designer and manufaturer of solar water heating prodcts in China. All of our products are designed to ensure robust performance over a long lifespan. All Redao products are complied with CE, ISO9001-2008.
With our dedicated and experienced team, our specialised manufacturing base, as well as the continued focus on technical solutions and customer service, we are sure that Redao will remain the supplier of choice for many throughout the coming years.
Redao strives to maximize production outputs and quality using the very lastest in manufacturing techniques, and uses equipment with proven reliability and the flexibility to adapt to fast changing requirements of customers. If you are interested in Redao water heater system, please feel free to call us.
Redao brief profile:
2000>Alinsidun establish, the former name of Redao. Production of solar water heater tank begins.
2001>Alinsidun develop its first solar water heater. Rush production begins.
2002>Alinsidun opened sales and distribution office in Shanghai, China.
2003>Alinsidun was awarded "Observing contract & Valuing Credit Star factory" by Zhejiang Quality Examinations and Appraisal Center.
2004>Export production begins.
2005>Alinsidun observed Good Quality control system by Chinese Product Quality Management center. At the same time, Alinston became the mumber of China Solar water Quality Control System.
2006>Alinsidun was awarded "China Solar Water Heater Most Famous Brand" by China Product Quality Management Center.
2007>Alinsitun complied with the Quality Assurance Requirements of ISO 9001-2000
2011>Redao became the company name instead of Alinston, and Redao solar water heaters complied with CE certification. In Aprial, Redao complied with ISO 9001-2008.
2012>QAL mark registered.
