ghatikar Posted September 24, 2017 Share Posted September 24, 2017 Solar Water users? and gurus in the house How did you connect the inlet of the tank ( cold water )? Direct to Overhead tank, to the borehole, manually fill using a tap In my solar heater user manual ( Simba make 120 L - looks like made in China) the manual recommends all filling methods which are manual and the tank has overfill discharge outlet which means if I connect to water source the water will flow out from discharge outlet.I also believe the tank and tubes can take max 0.7 bar operating pressure. In addition, the water when heated expands 3 to 5 % which means it needs space to go The reason I am asking is I came across this https://www.aliexpress.com/item/Automatic-water-control-valve-solar-water-heater-feeder-assistant-tank/1935638063.htmlThere is a single and double pipeline model The system I came across only fills at 0.5 bar and the overfill outlet has to be connected to the 2-foot pipe above water level. I believe the water coulm works as counter pressure stopping inlet water.I intend to drain the tank from top outlet using a small 300 watt booster to match my house pressure of 2.5 bar Quote Link to comment Share on other sites More sharing options...
ghatikar Posted September 24, 2017 Author Share Posted September 24, 2017 Pages from the manual Quote Link to comment Share on other sites More sharing options...
___ Posted September 25, 2017 Share Posted September 25, 2017 I'm not familiar with this kind of setup. The low-pressure stuff we have here all have a small reservoir tank on the top, with a float-valve inside that reservoir tank. The cold water supply (typically much higher pressure) simply connects to the float valve in this reservoir. The float-valve thus acts like a pressure reducer. There is a safety/air-vent pipe attached to the top of the tank (the hot water part, not the reservoir on top), and this pipe stands taller than the reservoir. So everything basically fills up to the top of the reservoir and then the only pressure from there on is gravity. Ideally, if you're going to attach mixers to that, then the cold water side should feed from reservoir and not from the high pressure cold water side. Otherwise you must use a traditional (by British standards) two tap setup. Mark and ghatikar 1 1 Quote Link to comment Share on other sites More sharing options...
ghatikar Posted September 25, 2017 Author Share Posted September 25, 2017 @plonkster Thanks, I am on the right track somehow my supplier did not supply the assistant tank and has no idea what I am referring to I have already ordered the assistant tank. So now I have 15 days to adjust and measure the EV tubes efficiency wbr Anil Quote Link to comment Share on other sites More sharing options...
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