Double DI

[PC]

Been using double di with 11 litre vessels for a long time now. Works fine but it’s always good to try and make anything work related that bit more efficient.
My question is if I change to 2 x 25 litre vessels would that mean I would be changing the resin less often?
I appreciate it sounds obvious and writing it down has made it sound even more obvious to be honest but I was just wondering if anybody has in fact changed from 11 to 25 litre vessels? Appreciate that the 25 litre vessels are bigger and will take up more room but I’m in a Transit Custom so have plenty of space. I think I’ve convinced myself to go for it but just wanted to post it to see if there was anything I hadn’t considered before I spend the money.
Thanks in advance

 

[Deleted member 7446]

Been using double di with 11 litre vessels for a long time now. Works fine but it’s always good to try and make anything work related that bit more efficient.
My question is if I change to 2 x 25 litre vessels would that mean I would be changing the resin less often?
I appreciate it sounds obvious and writing it down has made it sound even more obvious to be honest but I was just wondering if anybody has in fact changed from 11 to 25 litre vessels? Appreciate that the 25 litre vessels are bigger and will take up more room but I’m in a Transit Custom so have plenty of space. I think I’ve convinced myself to go for it but just wanted to post it to see if there was anything I hadn’t considered before I spend the money.
Thanks in advance

Depends on your water quality TDS and obviously the more resin you have in use the less changes you should encounter

There's nothing stopping you using a 3rd DI
One to take the big hit the 2nd & 3rd to polish the water and when the DI goes high replace the 2nd to the 1st and refill the 3rd which would be the old 1st

 

[PC]

I did think about the 3rd di

 

[dazmond]

Been using double di with 11 litre vessels for a long time now. Works fine but it’s always good to try and make anything work related that bit more efficient.
My question is if I change to 2 x 25 litre vessels would that mean I would be changing the resin less often?
I appreciate it sounds obvious and writing it down has made it sound even more obvious to be honest but I was just wondering if anybody has in fact changed from 11 to 25 litre vessels? Appreciate that the 25 litre vessels are bigger and will take up more room but I’m in a Transit Custom so have plenty of space. I think I’ve convinced myself to go for it but just wanted to post it to see if there was anything I hadn’t considered before I spend the money.
Thanks in advance

I've been using 25L DI vessels for years....of course you ll be changing your resin less often(unless your tap tds goes up)...

I currently change my resin every 5 months,soon to be every 4 or 5 weeks when I move in with the missus as her tap tds is 127(mine is 024)

 

[PC]

Cheers for that. My tap tds is around 70 and I’m changing the resin every 3 weeks. So my idea was to use 25l vessels and change every 6 weeks. Just a small difference but every little helps.
At what tds is your 2nd vessel coming in at before you change it?

 

[Deleted member 7446]

Cheers for that. My tap tds is around 70 and I’m changing the resin every 3 weeks. So my idea was to use 25l vessels and change every 6 weeks. Just a small difference but every little helps.
At what tds is your 2nd vessel coming in at before you change it?

70ppm is a little on the limits in my opinion and the crossover to RO/DI

My tds is approximately 54ppm and I'll run up to 15ppm before a change and use every bit I can.

Never encountered issues with that level and unless you're a millionaire there's no real requirement to change at 1ppm

 

[PC]

15 sounds high mate but I assume you know what you’re doing! It’s always a contentious issue as to how high people will let their tds go. I’m normally around 5-6 to be honest before I change but maybe I could let it get higher?
No doubt there will be some who come along and say NO it has to be 0!

 

[Part Timer]

70ppm is a little on the limits in my opinion and the crossover to RO/DI

My tds is approximately 54ppm and I'll run up to 15ppm before a change and use every bit I can.

Never encountered issues with that level and unless you're a millionaire there's no real requirement to change at 1ppm

You'll have the TDS Police chasing you

 

[Master Jedi Alejandro]

I use to have double 11l DI & then switched to a single 25l with my new system. Honestly wished I hadn’t. Nothing wrong with the 25l and it’s true it lasts longer between changes, but man those changes are annoying It’s so large and cumbersome, it takes two of us to do it with any sort of speed. While as the smaller ones I could chuck about myself. So yeah, stick to 2 would be my call. Or get a third 11l like @AW Services suggested. Even go 4. Or 5. Or 6! Or……

 

[Deleted member 7446]

You'll have the TDS Police chasing you

Hope they run

 

[PC]

I use to have double 11l DI & then switched to a single 25l with my new system. Honestly wished I hadn’t. Nothing wrong with the 25l and it’s true it lasts longer between changes, but man those changes are annoying It’s so large and cumbersome, it takes two of us to do it with any sort of speed. While as the smaller ones I could chuck about myself. So yeah, stick to 2 would be my call. Or get a third 11l like @AW Services suggested. Even go 4. Or 5. Or 6! Or……

Thanks for that. It had occurred that the 25l could be a bit more hassle to change so definitely got that to bear in mind

 

[Dial A Window Wash]

Depends on your water quality TDS and obviously the more resin you have in use the less changes you should encounter

There's nothing stopping you using a 3rd DI
One to take the big hit the 2nd & 3rd to polish the water and when the DI goes high replace the 2nd to the 1st and refill the 3rd which would be the old 1st

I've never seen the point of this my tap reading is about 55 so once the TDs starts rising from the second one when you swap them it's not long before the first tank is just tap water.

 

[PC]

Not 100% sure what you’re trying to say but for me my tds is around 72. When the second di is showing about 5 (around 3 weeks) I swap that to the front and put fresh resin in the second one. It’s about 3 weeks again before the second one rises to about 5 and so on

 

[francie]

I've been using 25L DI vessels for years....of course you ll be changing your resin less often(unless your tap tds goes up)...

I currently change my resin every 5 months,soon to be every 4 or 5 weeks when I move in with the missus as her tap tds is 127(mine is 024)

Daz why are you taking your gear to your missus gaf,I know hour moving in but areyou giving up your own place mate?

 

[dazmond]

Daz why are you taking your gear to your missus gaf,I know hour moving in but areyou giving up your own place mate?

I moving in permanently.yes I'm giving up my own flat after 25 years...its time to move on...

I will have my own bedroom and a dedicated drum room downstairs in the extension.she has a 4 bed house and a large driveway(fits 4 vehicles on it)and outside tap right under the kitchen window which is ideal...only problem is tap tds is 127 instead of 024 here in my flat...

 

[spruce]

I moving in permanently.yes I'm giving up my own flat after 25 years...its time to move on...

I will have my own bedroom and a dedicated drum room downstairs in the extension.she has a 4 bed house and a large driveway(fits 4 vehicles on it)and outside tap right under the kitchen window which is ideal...only problem is tap tds is 127 instead of 024 here in my flat...

That was rather quick, wasn't it?

 

[francie]

I moving in permanently.yes I'm giving up my own flat after 25 years...its time to move on...

I will have my own bedroom and a dedicated drum room downstairs in the extension.she has a 4 bed house and a large driveway(fits 4 vehicles on it)and outside tap right under the kitchen window which is ideal...only problem is tap tds is 127 instead of 024 here in my flat...

Your mad mate giving up your own gaf after 25 years,if it dont work out you've nowhere to go,big mistake,can you not just keep your flat too?

 

[Pjj]

Your mad mate giving up your own gaf after 25 years,if it dont work out you've nowhere to go,big mistake,can you not just keep your flat too?

He shouldn’t keep the flat as well we have a huge amount of people needing housing it would be immoral to keep it and have it empty , if he rented it out doubt he can as think it’s housing association type of property then that’s a different matter.

 

[tench0771]

15 tds way to high you won’t see any issues from out side but guaranteed from inside they look 010 is the most I’ll go . I would stick with 11 litre they only take 5 minits to change resin

 

[dazmond]

Your mad mate giving up your own gaf after 25 years,if it dont work out you've nowhere to go,big mistake,can you not just keep your flat too?

Half the flats round here are boarded up now,the rest are full of smackheads and immigrants.a mosque has opened up on the corner of my street too....I don't recognise the place anymore...Its time I moved on..a few stabbings and shootings too over the last few years....

I've been with my missus for 12 years.she lives in a very nice 4 bed house in a nice area plus we have a dog.id be mad not to move in now the grown up kids have flown the nest!

 

[dazmond]

He shouldn’t keep the flat as well we have a huge amount of people needing housing it would be immoral to keep it and have it empty , if he rented it out doubt he can as think it’s housing association type of property then that’s a different matter.

Haha....a few tenants on here sublet their flats out.yes it's illegal and I certainly won't be doing it.

Time for me to move on and make a fresh start.its been long overdue....