WMAS Discussion Forum : hooking up RO/DI http://www.utahreefs.com/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 13 Jul 2026 08:45:14 +0000 Sat, 19 Mar 2005 08:59:43 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.03 360 www.utahreefs.com/forum/RSS_post_feed.asp?TID=5809 <![CDATA[WMAS Discussion Forum]]> http://www.utahreefs.com/forum/1by1.gif http://www.utahreefs.com/forum/ <![CDATA[hooking up RO/DI : Most old units had a small restrictive...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57931&title=hooking-up-ro-di#57931 Author: Mark Peterson
Subject: 5809
Posted: March 19 2005 at 8:59am

Most old units had a small restrictive piece in-line at the connection point from the membrane. Often that little piece gets lost if someone doesn't know it's there.

I've noticed that lately there are valves used for restricting flow. The flow should be 1 gallon of R.O. water to 4-5 gallons of waste. Set the valve accordingly.

Edited by Mark Peterson]]> Sat, 19 Mar 2005 08:59:43 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57931&title=hooking-up-ro-di#57931 <![CDATA[hooking up RO/DI : You do need to pick up that old...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57789&title=hooking-up-ro-di#57789 Author: nellans
Subject: 5809
Posted: March 18 2005 at 11:10am

You do need to pick up that old unit mark! Give me a call anytimeyou're in the sugarhouse area and we can get together or next meetingworks fine for me as well.

When I mean back pressure I mean the line coming OUT of the rostage,   the stage going in will be at house water pressurebut docs I got with the unit claim the waste water out of the ro unit(not the good water than then heads into the di unit) needs to havebackpressure to work but they don't specify how much and just gave methis cheesy little hook up to put above the trap under my sink claimingthat provides the "right" backpressure.  since this is in mybasement and the waste will just go to a floor drain i assume i got avariable flow restrictor to provide the backpressure but have no ideawhat to set it at...

thoughts anyone?

-dwn
]]> Fri, 18 Mar 2005 11:10:09 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57789&title=hooking-up-ro-di#57789 <![CDATA[hooking up RO/DI : I wouldn&#039;t hook it up to...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57720&title=hooking-up-ro-di#57720 Author: fj40fax
Subject: 5809
Posted: March 17 2005 at 8:23pm

I wouldn't hook it up to the hot water because the waste water will be using gas/electricity to get heated just to go down the drain.

Fax

]]> Thu, 17 Mar 2005 20:23:35 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57720&title=hooking-up-ro-di#57720 <![CDATA[hooking up RO/DI : Do not use hot water: The R.O....]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57719&title=hooking-up-ro-di#57719 Author: Mark Peterson
Subject: 5809
Posted: March 17 2005 at 8:22pm

Do not use hot water:

The R.O. Membrane is a very fine polymer(plastic) mesh. Hot water will soften it and degrade it's effective operation and it's life.

The solution is easier than you may realize. The proper pressure rated plastic tubing can easily be connected from as far away as the other side of the house and run along the ceiling or wall to the R.O. installation location, preferrably above a floor drain.

Optimal pressure should be listed on the paperwork that came with the unit. Usually it's standard house water pressure of 60-80 psi.

I need to pick up that old unit, don't I?]]> Thu, 17 Mar 2005 20:22:10 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57719&title=hooking-up-ro-di#57719 <![CDATA[hooking up RO/DI : Hey all, I&#039;m trying to hook...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57714&title=hooking-up-ro-di#57714 Author: nellans
Subject: 5809
Posted: March 17 2005 at 7:56pm

Hey all, I'm trying to hook up my RO/DI in the basement but the"nearest" pipe is hot water and not cold.  Is it ok to use hotwater into the unit or will it ruin the membrane/di resin/otherstages?  a second question, how do you determine what the optimalbackpressure is for your unit so you know how much flow restriction toput on it?

thanks
-dwn
]]> Thu, 17 Mar 2005 19:56:51 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=5809&PID=57714&title=hooking-up-ro-di#57714