dax021

Could really use this and would love to come and fetch it. DM me or call/WhatsApp. Peter 0827788003. Thank you kindly

You pipped me to the post. Even if you don't use the rocket side of things the concept could be used i.e., the clay couch you build will become your sand battery heated by however you would have heated a conventional sand battery

Have also been wondering, and am keen to know.

That's good to hear. Wishing him a speedy recovery to full health

How is @TaliaB doing? Trust the op went well!!

Thanks @Scorp007 My thoughts are with him

@Scorp007 any update on @TaliaB? Hope he's on the mend.

Wow, sterkte @TaliaB. Wishing you a speedy recovery

I reversed the fans on my 48V 3kVa Plus model when I first read this thread and noticed that the fans definitely run more often and for longer than before. I have never actually measured temperatures and have not changed them back to standard (often thought I should but never get around to it) and have never had even a minor hiccup with the inverter in about ten years of offgrid use.

Brand new Kwikot installed a month ago soon after I moved in here. First time I looked in the ceiling I noticed it was leaking in 2 places, so the seller had it replaced under her insurance. I still had to pay in R2500 excess, which I was not happy about. I don't see any other PRVs on my line, in fact I can't even find a shut off valve on either side of my meter. If I close the tap feeding the geyser, half the house's water supply is cut, but the rest is still open. Weird setup, in my mind. The solar geyser came from a friend's house, he removed it when he did renovations to his bathroom. It is not open to atmosphere, but I remember it had vacuum breakers on it. Unfortunately, he didn't take note or photos of how it was connected, but it was mounted outside and had 22mm pipes going through his tiles and connected to his internal geyser. I contacted the solar geyser manufacturer, but they said they can't help, get a plumber. I don't need this extra expense, and I am more than capable of connecting everything up safely, as long as I can get the correct info. Thanks for all the advice, I really appreciate it, and am looking forward to more and coming up with a plan.

Thanks for pointing this out. I started the confusion by getting the scale wrong to start with. So, if I add a 400kPa PRV to the cold inlet will my diagram work? I haven't tested my water pressure (I will), but suspect it is not 600kPa anyway

Hi TaliaB, thanks. So, in the edited drawing I have removed the line back to the 4Kpa geyser. Is this basically what you have suggested? Solar Geyser Setup 1.pdf

The circulation pump I have runs on a small solar panel, so I assume this would be self regulating, i.e., it would pump while the sun shines and not at night or cloudy days

Thanks for the help. Ok, I will add the circulation pump, it makes sense. Now if someone could just confirm my drawing with advice on where to install the pump, NRV's and vacuum breakers, I be very appreciative. Thanks

Thanks for the reply, I much appreciate the input. So where exactly must I install NRV's? Do I need to install vacuum breakers on the solar (lower) geyser? I am not averse to installing a circulation pump if it is the only way, where do I fit it or them in the system?

Hi All, I asked this question a while ago on someone else's thread but even though I got some good advice, I did not get a definitive answer with which I feel comfortable enough to do the installation. I will try to embed some photos, but this is my plan. In the ceiling is a standard 150Lt 240V water heater with a 3Kw element. I have been given an 80Lt solar geyser with a flat plate collector, which I want to connect in series and hopefully rely on thermosyphon to keep both cylinders hot while using minimum grid input. If there is no alternative, I am happy to add a 12V solar circulation pump but would prefer not to. Is my diagram correct and what am I missing? Hope this makes sense, thanks in advance Solar Geyser Setup.pdf Sorry I can't seem to open the PDF, hopefully you guys can see it

Could be worth it just to strip the battery to use in a standard solar setup

I wouldn't buy 2 x 7.4kw 2nd hand for R20K if one can get a new 16.4kw for about R30K on the Powerforumstore

Thanks all. What I didn't mention is that there are 5 bloody DB's in this house daisy chained, each one feeding the next, so going to be a nightmare to connect the inverter.

Yes, Axpert 3kVA, so 2.4 kW 48V. So the reason for connecting like this is purely for the extra MPPT, am I correct? If this is the case, I would rather keep the aux port for a generator as I think I will have enough PV capacity on the Sunsynk's two MPPT's. On advice from others on this forum, I can fit 12 x 600W panels in two strings E and W

Would you mind explaining this to me. I have a 5kW Sunsynk as well as a 3kVA Axpert (both still to be installed). What are the advantages

Thanks Kevin, not sure if the same. It is a Jnb site

While I'm here Kevin, if you don't mind. Is SIW, Solar Inverter Warehouse a valid business?

What I thought, thanks

Anyone know if Solar Energy 101 in Hermanus is legit? Price seems too good to be true.