David27 Posted January 31, 2021 Posted January 31, 2021 Good day Guys, I have a client that has a solar panel (Collector) connected to his Geyser, with a controller and circulation pump. He would like the circulation pump to run during a Power Outage (Load Shedding) from the back up Inverter, and obviously NOT the geyser element. Pump Only.. Is there anyone that can give me some advise as to how connect this this up, using perhaps a Relay...??? Quote
FixAMess Posted January 31, 2021 Posted January 31, 2021 1 hour ago, David27 said: He would like the circulation pump to run during a Power Outage (Load Shedding) from the back up Inverter, and obviously NOT the geyser element. Pump Only.. Is the pump A/C or DC? Most DC pumps run from a battery and will still pump during load shedding provided the pump is good. Some of the DC pumps are even solar connected to charge the battery when A/C is off. What controller is it using , geserwize? Quote
Speedster Posted January 31, 2021 Posted January 31, 2021 14 minutes ago, FixAMess said: Is the pump A/C or DC? Most DC pumps run from a battery and will still pump during load shedding provided the pump is good. Some of the DC pumps are even solar connected to charge the battery when A/C is off. What controller is it using , geserwize? I've got this. Geyserwise controlling a 12V pump, with 10W solar + battery backup Quote
David27 Posted January 31, 2021 Author Posted January 31, 2021 26 minutes ago, Speedster said: I've got this. Geyserwise controlling a 12V pump, with 10W solar + battery backup It is an AC Pump 220V. so it must be switched by the Inverter, via the controller, only activating the circulation pump, when the temperature in the collector reaches a certain degree. Quote
FixAMess Posted January 31, 2021 Posted January 31, 2021 1 hour ago, David27 said: It is an AC Pump 220V. so it must be switched by the Inverter, via the controller, only activating the circulation pump, when the temperature in the collector reaches a certain degree. Why don't you just move the controller + pump to the essential side? Quote
Speedster Posted January 31, 2021 Posted January 31, 2021 (edited) 41 minutes ago, FixAMess said: Why don't you just move the controller + pump to the essential side? Probably because the AC pump draws power via the controller, which also powers the element? (Guessing here). If correct he's going to have to find a way to split the power to the pump. Perhaps change the controller to the essential side by running a new cable for it and use the old cable to power the element. Then have the controller activate a contactor for the element which now draws power from the non-essential. Or switch the pump to 12v if the controller allows. Edited January 31, 2021 by Speedster Quote
David27 Posted January 31, 2021 Author Posted January 31, 2021 1 hour ago, Speedster said: Probably because the AC pump draws power via the controller, which also powers the element? (Guessing here). If correct he's going to have to find a way to split the power to the pump. Perhaps change the controller to the essential side by running a new cable for it and use the old cable to power the element. Then have the controller activate a contactor for the element which now draws power from the non-essential. Or switch the pump to 12v if the controller allows. Yes you are correct. that is exactly what I should do, Thank you. I also got the the advise from Pierre. Quote
nevinvert Posted March 10, 2023 Posted March 10, 2023 If it is a Geyserwise system, I would have thought it provided the option of 2 separate power inputs; one for the pump and control panel and separate one for powering the heating element. Not splitting the inputs means no circulation during midday blackouts and no heating by the sun. Wow! Quote
Hartswater Posted May 12, 2023 Posted May 12, 2023 Nevinvert som my probleem pragtig op Ek het 'n solar split unit saam met my 150lt geyser. Ek wil weet hoe, indien moontlik ek die probe, die screen en die circulation pump kan koppel op my inverter? Die gebeur nou met beurtkrag van 10 vm tot 2 nm dat my geyser se temperatuur slegs 45 grade Celcius bereik. Met geen beurtkrag gedurende die dag bereik ek 'n temperatuur van 52 grade Celsius. Sal waardeer as iemand kan help? Kan ek my selnommer hier noem? Dankie by voorbaat Quote
Cassie Posted May 14, 2023 Posted May 14, 2023 On 2021/01/31 at 11:24 AM, David27 said: Good day Guys, I have a client that has a solar panel (Collector) connected to his Geyser, with a controller and circulation pump. He would like the circulation pump to run during a Power Outage (Load Shedding) from the back up Inverter, and obviously NOT the geyser element. Pump Only.. Is there anyone that can give me some advise as to how connect this this up, using perhaps a Relay...??? Its very easy (I assume your client is using an AC circulation pump) : 1. Use a transfer switch to render AC power to the Geyser either from the Mains (Eskom) or the inverter backup system 2. Have a Geyserwise Max installed. 3. During load shedding I transfer the power supply with the transfer switch to the Inverter backup and ensure that on the Geyserwise Max the element is not selected at all. For this reason, I do not use the program timer to switch the element on. 4, The alternative is to install a DC circulation pump with a 10w solar (PV) panel and 12v battery - this will eliminate 1. and 3. above. This is what I'm going to do next, Quote
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