Polyurethane foam insulation type 250L pressurized solar water heater
Are there more and more users using 250L pressurized solar water heater, but many users have not cleaned water heaters for years. If the water heater is not cleaned for a long time, a large amount of scale of the 250L pressurized solar water heater will be generated, and the service life of the 250L pressurized solar water heater will be significantly reduced.
First: scale of the solar water heater will reduce thermal efficiency
Because the scale has a low thermal conductivity, thick scale is a thermal resistance, which reduces the heat transfer efficiency of the water heater.
Second: scale of the solar water heater will reduce the circulation of the water heater
After scaling in the vacuum tube of the solar water heater, the scale prevents the water flow inside the water heater from circulating, which will cause the heat in the vacuum tube not to be transmitted inside the water tank, resulting in slow heating.
Third: scale of the solar water heater will make the sensor ineffective
After scaling in the vacuum tube of the solar water heater, the temperature sensing element inside the sensor cannot sense the change of the external water temperature in time, so that the displayed temperature is lower than the actual water temperature.

(1) Specification:
Inner Tank:
Food grade SUS 304 stainless steel/316 stainless steel, 1.2mm, diameter 360mm
Out Tank: Galvanized steel/201 stainless steel/304 stainless steel, 0.4mm, diameter 460mm
Insulation: 50mm high-density polyurethane foamed
Inlet&Outlet: 1/2” or 3/4”, stainless steel
Vacuum Tube: QB-AL-N/AL-47mm/58mm-1800mm
Heat Pipe: Red copper, 1.0mm*14mm heat pipe head, 0.6mm*8mm heat pipe
Water Tank Bracket: Galvanized steel sheet, 1.5mm/201 stainless steel, 1.2mm/aluminium alloy, stainless steel screws & nuts
Accessories: Electric heater, magnesium anode,TP valve, TK-7Y digital controller and so on.

(2) Optional Accessories and their Function:
PT valve: temperature and pressure safety valves, with dual temperature and pressure protection;
Electric backup: to heat water when rainy and cloudy days;
Magnesium bar: to soften water in hard water area;
TK-8A/TK-7/TK-5 digital controller: to control water level, feed water automatically and control the operation of electric heater at a certain tempeature as we except
Check valve: to prevent hot water from flowing backwards
(3) Application:
The main use is for family use, such as bathing, cloth washing and so on.
Solar water heater with assistant tank model is widely used in apartment, hotel and school.
Also it can be used for swimming pool, farm.





FAQ:
1- What is your Delivery Time?
LCL order/Sample order: within 7 days.
Full container order: 7-14days.
2- What is your Guarantee Time?
5 years.
Provide you with 1%-2% extra accessories and vacuum tubes, they are free for you.
3- Can you accept OEM ?
YES.
4- What is your Payment Term?
We accept T/T or L/C at sight, Western Union.
5- What is your MOQ?
1 set.
6- What is your Packing?
LCL order/Sample order in wood cartoon.
Full container order in high quality standard export carton.

7- What is your FOB Port?
We accept FOB Shanghai, Ningbo etc.
8- What is your Monthly Production Capacity?
10000 sets.
9- What is your Shipping Term?
By Sea/Air/Rail.