Before you install this type of water heater, check with your gas company for proper sizing of your gas main. Typical tankless heaters require more gas than the. Leah from See Jane Drill demonstrates how to remove an old water shutoff valve for a toilet, and install a new one compression type. Learn how easy it. The same applies to other options in these instructions. Item 1 Location. In the real estate business they commonly say location, location, location is the most important thing. That is also somewhat true in positioning a Reverse Osmosis unit. A Reverse Osmosis RO System is designed to fit under most sinks. It can also be installed in the utility area or in a basement. Of course the tubing will then need to be extended up to the faucet andor ice maker. It can be installed in any location that will not present a problem of freezing in the winter. Basement installations will provide easy access for filter changes and often a basement location will provide a better connection access to a refrigerator icemaker or a second faucet location. One other important factor is that it does not take up valuable space under your kitchen sink. In situations where cold weather is not a factor, an attached garage might offer a good location. The vast majority of RO units are installed under the sink, correspondingly, these installation instructions will address an under the sink installation. Item 2 Preparation. Remove all items from the shipping package. Some models of Reverse Osmosis systems are shipped fully installed. If the model you have purchased has the filters and membrane installed, you can skip Item Three and go to Item Four. Sediment and Carbon RO Membrane. Item 3 Install Filters and RO Membrane. Install filters and membrane in housings. The white 1. 0 sediment filter goes in the first filter housing. This is the inlet feed water and is the one on the right. The 1. 0 carbon block filter goes in the second filter housing for RO systems with three pre filters, install a second carbon block filter in the third housing. This would be the second housing on the left second and third on a unit with three pre filters. The RO membrane will be installed in the horizontal housing on top of the pre filter housings. Be certain to screw all housings to a tight position. The rubber O Rings will create a seal when securely tightened. If your system has an inline DI filter, please review the installation instructions under DI. Item 4 Now let us get aquatinted with some of the parts on the system that are already installed and ready to operate. ASO Valve. Above is the. ASO valve. It is positioned on the mounting bracket just behind the RO membrane housing see the diagram for the RO membrane housing location. The ASO Auto Shut Off valve is the monitor for starting the RO system and stopping the production when the storage tank is full. When the storage tank drops to 6. ASO opens and allows the incoming water to rush in through the ASO to the RO membrane housing where the system purifies the incoming water. When thetank is full, the ASO valve closes and the incoming water is no longer allowed to enter and production of purified water ceases. A few comments to identify the connections to the ASO valve 1. The Red tubing coming from the last pre filter attaches to the in high pressure on the ASO. The Red tubing attached to the out on the ASO goes to the inlet on the RO membrane housing. The Blue tubing coming out of the RO membrane housing goes to the in on the low pressure of the ASO. The fitting that screws into the RO membrane housing for the Blue tubing to attach onto is also thecheck valve. The blue tubing coming out of the ASO goes to the tee on the inlet of the in line carbon filterif your unit has an in line carbon post filter or directly to the storage tank when an in line carbon is not present. Flow Restrictor. Above is a picture of the flow restrictor. Fitting Connector Flow Restrictor Combo This type of flow restrictor is a fitting that is inserted into the drain outlet on the membrane housing. It serves three functions. Its first function is as the connection between the RO membrane housing and the drain tubing. Secondly, it is the flow restrictor wherein it regulates the flow of water over the membrane to obtain the best performance from the membrane. Third, it is also a check valve on the drain line. The check valve safety feature is one aspect of the drain line that is overlooked by many manufacturers and RO system owners. Without a check valve in the drain line, if the drain plugs, the drain line will back up into the RO membrane and create all sorts of problems. Correspondingly, we encourage RO owners to give consideration to installing some type of check valve in the drain line for safety purposes. Check Valve. Above is a. Check Valve. This elbow type check valve is installed into the RO membrane housing where the product water comes out of the RO membrane. The check valve is inside the elbow fitting. This male elbow connector screws into the 18 inch opening on the RO membrane housing and the other end of the elbow is where the inch tubing is inserted. The inch tubing connects to the ASO valve. Item 5 Mount Unit. Windows Xp Home Edition Sp3. If space permits and you desire to hang the filter housings on the side of the cabinet, use the holes in the filter housing mounting bracketto mark the locations to drill to install 2 mounting screws and screw into side wall. There should be sufficient clearance below the bottom of the housings, so that you can place a container to catch water when the filters are being replaced. Position the unit and hang the system to see if sufficient room was allowed. The tank needs to be positioned on firm surface. Access to the shut off valveon tank is important and you should not obstruct the shut off on cold water line. The tank can be set upright or laid horizontally. The closer the tank is to the faucet, the better the flow will be, however you can position the tank as much as 5. Remove and set aside filter housings and tank for now. Saddle Valve. Item 6 Self Piercing Tap or Supply Valve Adapter. Your System is equipped with a Self Piercing Tap. Valve. When installing the Self Piercing Tap Valve on copper lines be certain to install it in line after the cold water shut off valve never install on the hot water line. Mount and tighten the self piercing valve on the copper line in an easy to reach location. Turn the saddle valve clockwise all the way in. This will drive the sharp end of the piercer into the copper tubing and will pierce a tiny hole. When the saddle valve has been turned all of the way in, the valve is in the off position for your new RO system. Do not do anything further with the saddle valve at this time. Leave it like this until later in the installation process. Drain Clamp. Item 7 Drain Saddle. Sink With Disposal The vertical pipe above the horizontal pipe from garbage disposal is the best choice for a location to install the drain saddle on a sink with a disposal. For a sink without a disposal, the best choice is the vertical drain pipe as high above the water level in the trap as possible. Try to keep the saddle as far away from the dish washer and waste disposal drains as you can. Do not use the body of the saddle as a guide for your drill.