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250L Electic Geyser + Geyserwise - How to go solar?

SauRoNZA

Honorary Master
Joined
Jul 6, 2010
Messages
28,978
#1
So I have a regular 250L electric geyser and it came with a Geyserwise system when I bought the house.

What is the cheapest or best value for money option I have to convert it to being solar powered in light of already having some of the kit conventionally used?

How hard would it be to DIY? I assume I would simply need to re-direct the inflow tothe solar unit and the out flow back to the geyser?

Also as a more future forward concept of fitting solar panels how much logic is there in going large now to scale more panels into the mix in future?

****

Assume I'm a complete retard when answering the above.

I see these kits that seem super cheap...but I don't understand where the heating would actually come from as in my mind the little solar panel would only power the pump.

https://www.sustainable.co.za/sustainable-12v-dc-circulating-pump-kit-2.html
 

isie

Executive Member
Joined
Jan 16, 2010
Messages
9,532
#2
So I have a regular 250L electric geyser and it came with a Geyserwise system when I bought the house.

What is the cheapest or best value for money option I have to convert it to being solar powered in light of already having some of the kit conventionally used?

How hard would it be to DIY? I assume I would simply need to re-direct the inflow tothe solar unit and the out flow back to the geyser?

Also as a more future forward concept of fitting solar panels how much logic is there in going large now to scale more panels into the mix in future?

****

Assume I'm a complete retard when answering the above.

I see these kits that seem super cheap...but I don't understand where the heating would actually come from as in my mind the little solar panel would only power the pump.

https://www.sustainable.co.za/sustainable-12v-dc-circulating-pump-kit-2.html
the kit is just for a part of solar powered pump so ya too cheap. but it can be used as part of a conversion kit.
you need something like this:

https://solaradvice.co.za/product/300l-its-flat-plate-retrofit-geyser-conversion-kit/
 

SauRoNZA

Honorary Master
Joined
Jul 6, 2010
Messages
28,978
#3
the kit is just for a part of solar powered pump so ya too cheap. but it can be used as part of a conversion kit.
you need something like this:

https://solaradvice.co.za/product/300l-its-flat-plate-retrofit-geyser-conversion-kit/
Okay so I'll only really win on leaving the thermal controller out so not much of a saving really.

In which case this seems more sensible and moving my whole geyser setup more central to the house.

https://www.sustainable.co.za/susta...re-close-coupled-solar-water-heating-kit.html

Currently my geyser sits in the garage and so getting water to the furthest bathroom means wasting a **** load of water before it gets warm.
 

isie

Executive Member
Joined
Jan 16, 2010
Messages
9,532
#4
Okay so I'll only really win on leaving the thermal controller out so not much of a saving really.

In which case this seems more sensible and moving my whole geyser setup more central to the house.

https://www.sustainable.co.za/susta...re-close-coupled-solar-water-heating-kit.html

Currently my geyser sits in the garage and so getting water to the furthest bathroom means wasting a **** load of water before it gets warm.
depending on which geyser wise system you currently have that can possibly be used in a solar set up.
but yes having the geyser closer to the house makes a big difference.
 

SauRoNZA

Honorary Master
Joined
Jul 6, 2010
Messages
28,978
#5
depending on which geyser wise system you currently have that can possibly be used in a solar set up.
but yes having the geyser closer to the house makes a big difference.
Will need to check but I seem to recall it was the exact same unit (the timing thing itself) as fitted to the solar option at my folks. But I also don’t know exactly what kind of setup they have.

We tend to use the other two bathrooms since the water shortage purely because of this.
 

isie

Executive Member
Joined
Jan 16, 2010
Messages
9,532
#6
Will need to check but I seem to recall it was the exact same unit (the timing thing itself) as fitted to the solar option at my folks. But I also don’t know exactly what kind of setup they have.

We tend to use the other two bathrooms since the water shortage purely because of this.
if going to buy or move the geysers, why not split your load?
not sure what your setup is but why not buy a smaller (100l) solar geyser for the further bathroom?
or if going to buy a full 250l solar put it at the fuhrer and have it feed the old geyer? you have the geyserwise it should only heat up when needed and save you a little ?
 

SauRoNZA

Honorary Master
Joined
Jul 6, 2010
Messages
28,978
#7
Just seems like it wouldn’t be sensible to burn some electricity to keep the old one going.

But I’ll get a professional opinion in.
 

isie

Executive Member
Joined
Jan 16, 2010
Messages
9,532
#8
Just seems like it wouldn’t be sensible to burn some electricity to keep the old one going.

But I’ll get a professional opinion in.
that I agree is not me :) - was just thinking you won't work the old one as hard if you fill it with hot water

my opinion 2 smaller geysers are better (in terms of efficiency) then 1 large - especially when you have some bathrooms a distance away. - takes more power to warm up and keep 300l that's constantly in use when 2 150l will be (since one may be in constant use while the other isn't) - purely anecdotal but i think if put to the test it

but all this is cost exercise.
 
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