1. Product Description
SFD is a domestic solar water heater that actively performs natural circulation by virtue of the thermosiphon principle. The water tank itself is not bearing any pressure, but through the built-in copper coil in the water tank, the running water is exchanged immediately for purpose of fresh high-pressure hot water.
In areas with low latitudes and high temperatures, such as Puerto Rico, Jamaica, Indonesia, etc., people directly use SFD solar water heaters for shower. However, in high-latitude and low-temperature areas, such as South Korea, Denmark, Poland, etc., people often use SFD products as preheating equipment, combined with gas water heaters, to provide medium-temperature hot water for bath, kitchen or heating floor heating.
2. Features and Specifications
The water tank has a built-in copper coil (heat exchanger) for secondary instant heat exchange. The difference between the hot water outlet temperature and the tank temperature is less than 2 °C. The hot water outlet pressure is high and equal to the tap water pressure. The copper coil test pressure is 0.9Mpa, but the water tank itself does not bear any pressure. The water tank is only used as a heat storage medium, and fresh hot water in the copper coil is used for dometic hot water directly.
The inner tank is made of food grade stainless steel SUSU304 by fully automatic argon arc welding and double-sided argon gas protection to effectively prevent the surface from being oxidized. Strict welding process control is better to protect the crystal structure of SUS304 from damage. The inner tank can be used for more than 15 years.
The solar water tank is made of polyurethane insulation, good process and thickness of 55mm to ensure that the temperature drop of hot water within 12H is less than 2°C.
Double-layer solar vacuum collector tube with AL/N/AL/SS/CU coating, absorption rate >92%, reflectivity<8%. and service life 15 years.
It can be combined with gas, electricity and other energy sources and can automatically control automatic switching.
The SFD series mainly has models, 150L, 180L, 200L, 250L and 300L, to suit the needs of families in different regions.
Automatically add water in the tank.
Auxiliary heating equipment.
Anode protection, protect the inner tank from corrosion.
Automatically control the outlet temperature according to the setting.
3. Product Installation and Cases
SFD can be installed on the ground, on a flat roof or on a sloping roof. The frames are fixed connected with base (ground or roof).
Installation and use steps: Select the installation location, assemble frames, place tank on the tank holder, install glass solar vacuum tube, connect hot and cold water pipe, supply water, make inspection, fix the screws, use in normal, make regular inspection and maintenance.
4. Warranty and Certificate
5. Packaging and Transportation