Direct feed RO/DI to tank

[GazzMan]

On my RO unit I have a booster pump, auto flush, high pressure switch, low pressure switch, the full monty, but on startup to make ro/di water, the TDS will raise up to 100+ sometimes.

It will take about 1-2 litres before it has dropped to its lowest of 4, this is when I open the di divert and direct the water through the di to get a finished product water of zero.

Iv found doing this, my di resin lasts much longer as I was changing it out monthly before I started producing water this way.


So my question is Can I set up my ATO so when the tank calls for more water, I can open a solonoid valve for 5-10 minutes, then close this valve, open another to supply the tank with the required RO/DI until my level sensor turns it off

I'm wanting a direct feed to tank from the ro unit, but it will need a short flush out before it feeds the tank each time.

I have put this on the GHL forum as well where, I have had a couple of answers but not a solution to my puzzle :lmao:

 

[Antipodes]

Yeah, that is not to hard, but some of the timings may change.
What is your current time out for ATO?
I believe the flush valve your are refering to is 24v? If that is the case you will need seperate powersupplies to operate each valve if you want to use the switch bar.
Fill solenoid I don't know what you have?
If you don't want to do that then you can use something like the PAB Powerhub which you can wire up for different voltages.
(I would go for the seperate power supplies, they are only on for the time required, so don't use much power)

Also is the flush valve part of the whole RO/DI unit. Then it is similar to mine in that the auto functionality of the RO unit automatically flushes at various times during its operation. If that is the case how are you going to seperate the flush valve from the RO unit it self and if you do what about the auto function?

Or are you going to put another flush valve in parallel to the existing one which will be controlled by the profilux?

 

[jjk_reef00]

I know some people don't have room for a dedicated RO container and they hook the ro up to the tank. However I would try my best to avoid directly hooking up an RODI to my tank. If something fails you can and will kill your entire tank.

Interesting observations about the water parameters though.