How to Install a Water Saver Upgrade Kit on your RO/DI System - BRStv How-To
A Water Saver Upgrade Kit can double the product water output of a standard 75 or 100 GPD membrane without increasing the wastewater output. Installing them is pretty simple but it can get confusing quickly if you are not familiar with typical RO/DI plumbing. Take a picture of your RO/DI system before installing your water saver kit for reference just in case.
The Water Saver essentially takes the wastewater from the first membrane and refines it through a second membrane, getting the maximum amount of product water out of every drop. Since the second membrane is fed from the first, there is a slight pressure drop which could cause a decrease in performance and rejection. To combat the decrease in pressure, a booster pump kit along with a pressure gauge is a good idea so you can keep your pressure around 65 PSI for optimal production.
The following instructions apply to both the 150 GPD Water Saver Upgrade Kit and the 200 GPD Water Saver Upgrade kit. The only difference is the included RO membrane in each kit, which should match the existing RO membrane in your RO/DI system. You also want to ensure your using the proper flow restrictor as detailed below.
- Recommended Flow Restrictor for 75 GPD RO Systems - 550mL/min
- Recommended Flow Restrictor for 100 GPD RO Systems - 800mL/min
Correct plumbing of the 150 GPD Water Saver Upgrade Kit
Water Saver Upgrade Kit Includes:
- 75 GPD or 100 GPD RO Membrane Filter
- RO Membrane Housing Canister w/ Tubing Connection Elbows Installed
- 2-Bracket Clips
- WYE Fitting
- 5 Ft Each of White, Blue, Red, and Black Tubing
- Small crescent wrench
- Tube cutters or razor blade to cut RO tubing
The 150 GPD Water Save Upgrade Kit requires water pressure of 65 psi going into the first membrane to function properly. If your home water pressure is not sufficient, purchase and install a booster pump kit. This will ensure you do not cause a considerable drop in the performance of your reverse osmosis system by installing the second membrane.
1. Prepping the existing membrane housing
- Turn off the source water
- Disconnect the BLACK waster water line from the membrane housing.
- Disconnect the BLUE product water tubing from the ASO valve.
- Cut an additional 14" long piece of BLACK tubing using the extra RO tubing included with the upgrade kit.
- Connect that 14" Black tubing to the wastewater port on the existing RO housing.
2. Assemble the new RO membrane and housing
- Install the new RO membrane into the new housing. Be sure the push the membrane firmly into the new housing so it is seated properly.
- Tighten the cap back onto the new membrane housing.
- Push the x2 bracket clips onto the existing membrane housing.
- Clip the new membrane housing into the bracket clips.
3. Plumbing the Water Saver Upgrade
- Connect the 14" piece of black tubing into the inlet of the new membrane.
- Connect the wastewater line (with flush valve) to the wastewater port on the new membrane.
- Cut a 6" piece of BLUE tubing using the additional tubing that came with the upgrade kit and insert it into the product water port of the new membrane.
- Connect both BLUE product lines together using the included WYE fitting
- Connect the WYE fitting directly to the Auto Shut Off vale using a short length (2") of BLUE tubing.
- We highly recommend the use of an inline TDS meter and pressure gauge on your RO/DI system to monitor performance.
- The crescent wrench can be helpful in removing the RO tubing from the quick-disconnect fittings. Use the wrench to depress the white ring while pulling on the tubing to disconnect it.
- Be sure the RO membrane is pushed firmly into the housing to make a tight seal down inside the housing.
- Water pressure of 65 - 90 PSI is recommended for optimal membrane performance.
- If your source water is over 300 ppm TDS, you will notice faster DI resin consumption because of the increased amount of TDS escaping the membranes.