Copper coils solar water heater

Features:
1, At inside of tank, there have copper coils as heat exchanger, The hot water is not directly flow out from solar tank, but flow out from copper pipe, so it have some beneficial:
A) When cold water flow into one end of copper pipe, same time, hot water flow out from another end, all procedure is no pollution, so it is drinkable.
B)because flow into and flow out is same time, so the water outlet have pressure same as water inlet.
C) The solar tank can be put some antifreeze in water for prevent cold weather, the special feature is difference with others solar system, because the water and antifreeze inside of solar tank only be used as heat transfer media not directly to be used

2, Assistant tank:
A)Assistant tank have a float valve, when you put water into solar tank at first time, if the solar tank is full, the assistant tank will controll to stop into water.
B)When the water inside of tank have been evaporated, the water inside of assistant tank will into mainly tank, so the float valve will drop down, and cold water will into assistant tank again.

3, Accessories for your optional:
A)Magnesium rod: If the local water is hard water, the magnesium rod can soften water, it will protect the solar tank
B)Electric heater: When the weather is not well, rainning or cloudy, water temperature could not satisfy your demand, electric heater will help you to satisfy your demand.
C)Controller: It will showed water temperature and water level inside of solar tank.

4, Material:
A)Inside of solar tank: Red copper, φ 12mm or 16mm
B)Internal tank: SUS304-2B
C)Outer shell: Color armor plate
D)Insulation layer: Polyurethan foam
E)Frame: Galvanized steel with powder coating
F)Vacuum tube: φ 47mm/1500mm or φ 58mm/1800mm
G)Quantity of tubes: 12, 15, 18, 20, 24, 30, 36
H)Capacity: From 60Liters to 300Liters

5, Usefull life: 15years

6, Warm prompt: The pre-heating solar water heater is more suitable for sunny area.