Installation & Support Center

Before you begin, gather the following:

• Basic plumbing tools: adjustable wrench, screwdriver (flathead & Phillips), tube cutter (for hard pipe models), and pliers
  
• Teflon tape (plumber’s tape) for sealing threaded connections
  
• Pipe fittings/adapters as specified in your system’s manual (e.g., ½″ or ¾″ NPT)
  
• Mounting hardware if installing wall-mounted models (anchors and screws included in kit)
  

Safety gear: gloves and safety glasses Refer to Section 2 of your system’s installation manual for model-specific requirements.

• Cold water feed line: Install on the cold-water supply only
• Accessibility: Ensure 6–12 inches clearance around the unit for filter changes and maintenance
• Stable surface: Mount securely to a wall or under-sink bracket (depending on model)
• No direct sunlight or freezing risk: Avoid areas where temperature can drop below 40 °F (4°C)

Most systems require a minimum inlet pressure of 45 psi (3.1 bar) and a maximum of 80 psi (5.5 bar).

• Too low: Reduced flow rate or no flow
  
  
• Too high: Risk of leaks or damage
  To check pressure:
  
  

1. Shut off water supply and attach a pressure gauge to a nearby faucet or hose bib.
2. Turn water back on and read the gauge.

If your pressure is outside the recommended range, install a pressure regulator or contact a professional plumber.

• Use Teflon tape: Wrap 3–4 turns clockwise around male threads
  
• Hand-tight + quarter turn: After hand-tightening, use a wrench to turn an additional ¼–½ turn—do not over-tighten
  
• Check alignment: Ensure fittings are straight; cross-threading causes leaks

• Pressure test: After installation, slowly turn on the water and inspect all connections for 2–3 minutes before securing the unit.
  
  

• Sediment & carbon filters: every 6–12 months (depending on water quality)
• RO membrane: every 2–3 years (or when effluent TDS rises by >10 ppm over feed TDS)
• Post-carbon polishing filter: every 6 months
• Alkaline Filter: every 12 months
• UV Bulb: every 12 months

1. Clogged pre-filters: Replace sediment/carbon filters
2. Fouled RO membrane: Check TDS and consider membrane replacement
3. Low inlet pressure: Verify upstream pressure is within 45–85 psi
4. Kinked tubing or valve issues: Inspect tubing runs and open all valves fully

Your water may have a slightly milky color during the first week of use. This is caused
by tiny air bubbles in the water and will go away with use.

• Sanitize system annually: Use food-grade sanitizer following the guide in Section 6 of the manual
• Inspect fittings and tubing: Check for wear or leaks; tighten as necessary
• Monitor storage tank air charge (for RO systems): Should be 5–7 psi when empty of water

Most NU Aqua System filtration systems are designed for DIY installation by individuals comfortable with basic tools. However, if you:

• Lack plumbing experience or you're not comfortable
• Need to modify existing or older pipework
• No tools or required equipment

We suggest hiring a professional.