Installing Undersink RO/DI

Hello all, I just wanted to share my experience installing the Air, Water, & Ice Dual Home / Reef RO/DI system.

Aquarium Water | Reverse Osmosis | RODI Water | ReefKeeper Water | Dual Home Reef with Tank & Faucet for under the sink

First, unpacking the unit which includes: three stage pre-filter, 50 GPD Film-Tec membrane, DI resin, taste filter for drinking water, pressure tank, faucet, and assorted hardware. I also purchased the TDS meter. Total cost with shipping just over $200.

 

FIRST THINGS FIRST - Read the included instructions in their entirety several times until you have a clear plan of what you will be doing in your head. I do mean SEVERAL TIMES!


The Workspace

Next make sure your workspace is clean. Get all that cleaning stuff out from under the sink an move the dirty dishes out of the way. Test fit everything under the sink to make sure everything will fit and to get the layout that you want, especially the location of the faucet.

 

Install the Faucet

Make sure you know exactly where you want to put the faucet, because once you drill this hole it is there for ETERNITY. Ok, three types of sinks you may be drilling. The instructions I am showing are good for any enameled sink whether cast iron or steel. If you have a stainless steel sink, well you have it easy.

Here are the parts of the faucet in the order they are installed with the sink between the two rubber washers:




Ok, now put down some tape and mark your location. Take a center punch and make a nice divot so the drill bit doesn't skip. Using a 1/4" masonry bit, drill a hole. Be sure to wear safety glasses!




Finish off with a step bit so the hole is just large enough to fit the faucet. Remove the tape and admire your handywork! (NOTE: There will be some chipping of the enamel, but that is what the escutcheon is for).



Install the faucet and snug everything down. Looking good pardner!

 

Install the Supply and Drain Fittings:

NOTE: The supply fitting included with the kit is for use with copper supply lines. If you have flexible lines running to your sink, which most do, you will want to purchase the Aquarium Water | Reverse Osmosis | RODI Water | ReefKeeper Water | Adapt-A-Valve for Braided Hose from Air, Water, & Ice. Since I neglected this purchase and live a long way from a hardware store, I had to make it work. Please bear with me (NOTE: you want to install the supply fitting UPSTREAM from the supply valve so you can shut-off the water for any maintenance tasks ie changing filter cartridges):




And the drain saddle:

 

Connect the Filters

The connections on the filter assembly are very well labeled, just connect the supply, drain, pressure tank, and faucet where instructed. Also connect a length of tubing and supplied ball valve to the DI out for aquarium water.

Be sure to read the instructions on using the Push-in fittings that are included with the kit. Also make sure that you have enough slack in you supply, drain, and faucet lines to move the filter assembly out from under the sink for easier filter replacement.

 

Check Your Results

Using the TDS meter check your unfiltered tap:




RO from the drinking faucet:




And RO/DI aquarium water:




Enjoy your new clean water for drinking, aquarium make-up, and aquarium water changes!

 

very good write up!

 

Nice photos, Wiig.

You did good with the installation except for the water tapping part -- that clamp is designed for solid pipes not for flexible tubing. Do not wait for catastrophe to happen -- go to the nearest plumbing store and get the right part for the job.

65 ppm after R.O. is beyond EPA standard for drinkable water which is 50. Your tap TDS count is high you might need to change filters every 6 months.

Enjoy the DI water and thanks for sharing your photos.

 

I just went through that whole process this past week. Good point on making sure you have all the parts and fittings. I spent several hours and lots of money between getting advice, looking in differnet home improvement stores and buying adapters. I see you pierced the hose under the sink. That was the biggest pain for me since its only a start of several problems. I ended up getting an adapter from air,water, ice. How is that working out for you?

 

I made it to town and the hardware store this weekend and was able to cobble together a supply T:



Thanks everyone for the kind words!