Product Description:

This is a pressurized system, with direct tank and flat panel solar collector combined.We call it compact flat panel pressurized solar water heater.

Open-loop systems are simply and fast way of water heating. They are best suited to warm climate regions because of operating directly with potable water. Open-loop systems are not recommended in regions where water quality is not good enough.

Product Features:

inner tank without heat exchanger
The enamel is coated inside the water tank which is of high corrosion resistance and of great pressure bearing. Our porcelain enamel tanks approved by CE, WATER MARK, ETL, WRAS, EN12977-3
SKThe whole system approved by SOLAR KEYMARK (EN 12976 Standard)
flat-panel-solar-collectorImported blue titanium absorber from Germany with high absorptivity(95%) and low heat loss(5%). High purity oxygen-free copper pipes as circulation system with high thermal conductivity, anti-corrosion pressure-bearing and longer service life. Low-iron tempered solar glass as cover with 92% transmittance. Our flat panel solar collector approved by SOLAR KEYMARK(EN12975 Standard)

High Quality Parts:

round-flange-heating-element-150x150Incoloy 800 Electric Element
CE Approved
pressure-and-temperature-relief-valve-150x150P/T Safety Valve
Water Mark Approved
solar-water-heater-system-controller-150x150Intelligent Controller
CE Approved
3.0mm-thick-enameled-side-plate-with-magnesium-anodeMagnesium Anode

Technical Parameters:

Direct Water Tank:

Tank Capacity100L150L200L250L300L
Outer Tank Diameter(mm)Φ540Φ540Φ540Φ540Φ540
Inner Tank Diameter(mm)Φ440Φ440Φ440Φ440Φ440
Inner Tank MaterialSteel BTC340R(2.5mm thick)
Inner Tank CoatingPorcelain Enamel(0.5mm thick)
Outer Tank MaterialColor Steel(0.5mm thick)
Insulating materialRigid polyurethane foam
Insulation thickness50mm
operating Pressure6bar
Corrosion protectionmagnesium anode
Electric ElementIncoloy 800(2.5kw,220v)
Adjustable Thermostat30℃~75℃
TP Valve7bar,99℃(water mark approved)

Flat Panel Solar Collector:

Dimension2000*1000*80mm
Gross area2m2
Aperture area1.85m2
AbsorberAluminum Plate
Selective CoatingMaterialGermany Blue Titanium
Absorptivity≥95%
Emissivity≤5%
Header PipesCopper (¢ 22*0.8mm)/(¢ 25*0.8mm)
Riser PipesCopper (¢ 8*0.6mm)/(¢ 10*0.6mm)
Cover PlateMaterialLow - iron tempered glass
Transmittance≥92%
FrameAluminum alloy
Base plateGalvanized plate
Base InsulationGlass wool
Side Insulationpolyurethane
Sealing materialEPDM
Max test pressure1.4MP
Max work pressure0.7MP

How It Works:

The system operates on the thermosiphon principle, It adopts the water-water circulation type. Heat adsorption membrane on the flat plate absorbs the solar heat to heat the water in the heat collector directly. Deliver the heated water to the upper part of hot water storage tank via circulation pipe and unheated cold water in the lower part flows into the flat-type heat collector as supplementation. Then cold water is heated and delivered to the hot water storage tank. The circulation of water repeats till all water in the water tank is heated to the specified temperature.

Open Loop Flat Panel Solar Water Heater Works

System Installation Diagram

Installation and Operation Manual:

DownloadFeaturesMain ComponentsMethod of InstallationNoticesCommon Failures and Troubleshooting
Open Loop Flat Panel Solar Water Heater Manual

1.1 Advanced technology
The core parts of the solar water heater – flat plate solar collector and enameled steel inner tank involve numerous national patented technologies. The solar collector with advanced technology in gathering solar energy features water-tightness, high heat absorption, independent heat supply, fast energy output, wide scope of application and long working life.

1.2 Low heat loss
With imported polyurethane foam en-bloc high pressurized, which is of high density and strength, the solar water heater has excellent heat insulation.

1.3 Superb process technology
The inner tank is made of special steel, formed up with advanced punching technology and auto non-electrode replacing welding technology. A special silicate is sintered by high temperature to the inner tank’s walls, forming a special protection layer featuring freedom of leakage, rust/erosion and scaling, thereby effectively preventing leakage between the water tank and the heat-gathering tubing and ensuring the cleanness of water.

1.4 Easy for functional extension
This solar water heater can be equipped with a computerized controller and electric heater. The user has a few options depending on his actual needs.


2.1 Flat plate panel
Flat plate panel
2.2 Water tank
Open Loop Flat Panel Solar Water Heater Water tank
2.3 Bracket (sloping roof & flat roof)
2.3.1 Sloping roof bracket
Sloping roof bracket
2.3.2 Flat roof bracket
Flat roof bracket

3.1 Installation of solar panel
Installation of solar panel
The flat panel(s) is fixed with the “Z” fasteners:
The flat panel(s) is fixed with the “Z” fasteners
3.2 Installation of Water Tank and Bracket
Firstly fix the hunger on the tank.
hunger on the tank
Then set water tank symmetrically on the bracket and fixed with the M9 nuts.
set water tank symmetrically on the bracket and fixed
3.3 Connection between solar panel and water tank
Please pay attention to the following drawing and picture when installing pipelines.
Connection between solar panel and water tank
Connection between solar panel and water tank 2
Connection between solar panel and water tank
If solar water heater is equipped with two or three units of solar collectors, please see the connection of two solar collectors from the marks C and D.
3.4 Installing computerized controller
If the solar water heater is equipped with one computerized controller, please carefully read the Controller’s User Manual before installing and operating the Controller.

The Controller should be located in a prominent location that is accessible to the homeowner. Care should be taken to ensure that the controller is not placed where it is within easy reach of children, near electromagnetic fields or in damp locations.

Attention!
▲ The socket and plug should be connected well.
▲ If electric heater is installed, do connect the live wire, null wire and ground wire correctly with power-leakage protection plug. The socket should be connected to ground reliably.
▲ Use tri-wire plug of safe protection, and the rated current value of socket ≥10A.
▲ Wiring according to controller instruction manual.


4.1 Prohibition of isolation without water
Under normal circumstances, keep the water tank full. If the solar water heater is not used for a long time, the heat collecting tubes should be covered with shade cloth.

4.2 No shadow
The solar collectors face south without shelter.

4.3 Wind stress
When installing solar water heater, please consider the issue of wind resistance, and resultant stress on attachment points.

4.4 P/T valve

4.4.1 Please refer to separate P/T valve instruction manual for operating.
4.4.2 Following installation, the P/T valve lever MUST be operated AT LEAST ONCE A YEAR by the solar water heater owner to ensure that waterways are clear.
4.4.3 The P/T valve should be inspected AT LEASE ONCE EVERY TWO YEARS, and replaced, if necessary.

4.5 Magnesium anode
The magnesium anode should be inspected at the timely basis to extend the life of water tank according to water quality.
Replace the magnesium anode AT LEAST ONCE TWO YEARS.

4.6 Water Quality
In areas with “hard” water, lime scale may foam inside the safety valve and P/T valve. In such regions, it is advisable to install a water softening device.

4.7 Expansion tank
In areas with high temperature weather, the pressure inside water tank rises quickly. It is an optional means to install a suitably sized expansion tank significantly minimize the amount of hot water dumped by the P/V valve due to overpressure.

Assembly, maintenance and repair shall be carried out only by qualified technicians. If the problems fail to be solved, please contact the local distributors/installers.