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Installation Instructions Reverse Osmosis

Installation Instructions Reverse Osmosis

Installation Instructions Reverse Osmosis 4 to 6 Stages

Although the 4 to 6 stage systems may appear different, the install is exactly the same on all systems.


Reverse Osmosis (RO) is the heart of the purification system, The RO process uses semi-permeable spiral-wound membranes to separate and remove dissolved solids, organic, pyrogens, sub-micron colloidal particles and bacteria from water. Feed water is delivered under pressure at about 60 PSI through the permeator where water permeates the minute pores of the membrane and is delivered as purified water.

Impurities in the water are concentrated in the reject stream and diverted down the drain.

Your newly purchased Reverse Osmosis System is capable of removing between 90% to 96% of the total dissolved solids (TDS), organic, and bacteria.


We suggest you read and become familiar with all instructions, processes, and parts prior to proceeding with the installation.


Prior to installing the feed water assembly, please make sure that the following water conditions are met:

Feed Water Condition Min. Max.
Inlet Pressure 40 PSI 100 PSI
Temperature 40 deg. F 100 deg. F
pH Level 2 11
TDS Level 0 ppm 2000 ppm

All local plumbing codes must be followed, otherwise warranty will not be valid.

All tubing must be cut in a straight line with a clean, sharp tube cutter.

Ready to start

  • Locate cold water supply, suitable hanging and fitment room for system and tank. Locate the drain point, and sink faucet placement.


Locate cold-water flex line ½” to cold water faucet tap on sink, Turn off water supply, open cold water faucet to release the pressure.

Picture indicates accessing water via the ½” flex line to cold water mixer tap. Please note that tubing colour on your systems is white, not blue as pictured.

Picture shows PLV when PLV is provided. If PLV is not provided tubing is continues through to the filter system.

IMPORTANT – a PLV should always be used when connecting to mains water supply.It is not necessary on tank water supply.


  1. The drain clamp should be drilled, installed above the trap and on the vertical or horizontal tailpiece (see figure 2).
  1. The hole position on the pipe should be marked and drilled with a 1/4″ bit through one side of the pipe (see figure 3)
  1. Align the drain clamp over the drilled hole and attach it to the drainpipe and tighten the two screws evenly (see figure 4).

Figure 2.  Drain Clamp Location- White Tube from RO

Figure 3 (First picture here). Drain clamp drill, Drain Tube

Fitting the Faucet to the Sink

Stainless Steel Sinks & Porcelain Sinks:

  1. Drilling through a stainless steel sink can be achieved by marking a center punch and drilling a 3/16″ guide hole.
  2. Use a 1/2″ or 7/16” carbide or very sharp drill to enlarge the hole.
  3. Make sure when starting to drill, begin slowly through the porcelain portion of the sink so that chipping is reduced to a minimum.
  4. On stainless steel, a very sharp drill bit and low speed is essential, or you risk burning the surface of the sink.


  • Disassemble the bottom portion of the faucet.
  • Place into hole of sink and reassemble faucet from underneath sink (see figure 5).


Figure 5

Faucet assembly


  1. Use Teflon tape and wrap the nipple on the top of the storage tank and the 90 degrees elbow supplied.
  2. Install the elbow on the 1/4″ ball valve.
  3. Install the ball valve onto the tank nipple.


  1. Connect water supply to R/O system
  2.  Then Connect R/O to tank (NOTE: water goes in and out of the same line to the storage tank)
  3. Connect filtered water to Facet tap on sink

Installation Instructions Reverse Osmosis

  1. Connecting drain from R/O to Drain (push tubing into restrictor valve marked 150 or 200 cc)

Installation Instructions Reverse Osmosis

In Conclusion, Installation Instructions Reverse Osmosis SYSTEM START UP:

  1. Check all connections for leaks.
  2. Move ball valve lever on storage tank to open position
NOTE: At NO point does the pressure valve on the bottom of the storage tank need to be tampered with or used. The water enters and exits the storage tank through the SAME LINE on the top of the tank. There is NO need to touch pressure valve at any point.

For these systems, Allow the tank to fill to capacity BEFORE turning on the faucet on the sink. Once the tank is entirely full open the sink top faucet and allow the entire tank to drain. This will flush the filters and the tubing prior to use. This is important as the filters are no longer pre-washed due to potential bacteria contamination. This process also helps to flush out the anti-bacterial solution which these units are factory treated with.

  1. FOR 4 Stage Systems ONLY: Allow the storage tank to fill entirely and then open the sink top faucet to flush out the anti-bacterial solution which these units are factory treated with.
  2. The system will automatically start to fill the storage tank again. You may need to repeat open faucet to drain the tank again, then let the tank refill.
  3. The system is ready to provide you with fresh and purified water.

As a general rule, any cartridges connected BEFORE the membrane should be replaced every 6 months. This will help ensure the membrane itself will last between 3-5 years.

The post carbon GAC (taste and odour cartridge) should be replaced every 12 months.

On a standard 4 Stage System the changes would be similar to this:

Poly Spun Sediment Cartridge – 6 months

Carbon Block Cartridge – 6 months

Membrane – between 3 and 5 years

Post GAC (taste/odour) Cartridge – 12 months

However these times vary depending on the quality of your water, so if you begin to detect a different taste or odour in the water, you may need to replace them sooner than noted above.

If you still need assistance with Installation Instructions Reverse Osmosis, please call 0436 270 000 or email info@aquaboss.com.au

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