Boss 900 Water Softener User Manual

Emily Jul 26, 2026

Introducing the Boss 900 Water Softener: your ultimate solution for soft, pure, and conditioned water at home. If you're looking to bid farewell to water spots on glasses, stubborn soap scum, and dry skin, you're in the right place. Let's dive into your comprehensive guide, packed with essential information and clear instructions to help you get the most out of your Boss 900 water softener.

Water softener
Water softener

In this manual, we'll cover everything from understanding the benefits of water softening to step-by-step installation and maintenance tips. Whether you're a seasoned DIYer or a first-time homeowner, you'll find this guide handy and easy to navigate. So, let's soften your water and enhance your home's functionality with the powerful Boss 900.

Easy Guide to Water Softener Maintenance
Easy Guide to Water Softener Maintenance

Understanding Your Boss 900 Water Softener

The Boss 900 is a salt-based, twin-tank water softener designed to tackle hard water issues efficiently. With its high-capacity resin, the system effectively removes surplus minerals like calcium and magnesium, ensuring softened water throughout your home.

How Does a Water Softener System Work?
How Does a Water Softener System Work?

Here's a quick overview of the Boss 900's game-changing features:

  • Twin-tank design for continuous soft water supply
  • High-capacity resin for maximum hardness removal
  • Automatic regeneration with built-in water meter
  • User-friendly control panel with digital display
  • Rust-free, rupture-resistant tank construction
GE Water Softener Manual GXSF30V User Guide
GE Water Softener Manual GXSF30V User Guide

Twin-Tank Operation

The Boss 900's twin-tank design guarantees a non-stop supply of softened water, a significant advantage over single-tank systems. While one tank is in service, the other tank is in the regeneration cycle, ensuring you won't run out of soft water at any time.

The following illustration demonstrates the switch between service and regeneration in the twin tanks:

WaterBoss City Boss 22,000 Grain Water Softener
WaterBoss City Boss 22,000 Grain Water Softener
Tank 1 Tank 2
Service
(soft water)
Regeneration
(cleaning)
Regeneration Service

Regeneration Process

During the regeneration cycle,diensthe Boss 900 cleans and prepares the resin for the next service cycle. Here's a simplified breakdown of the process:

Water Softeners
Water Softeners
  1. Backwash: The resin bed is rinsed to remove trapped dirt and debris.
  2. Rinse: The tank is filled with water to remove any remaining brine solution.
  3. Brine draw: Saltwater is drawn into the tank to surround the resin beads.
  4. Slow rinse: A gentle rinse ensures all salt residue is removed.
  5. Fast rinse: The final rinse prepares the resin for the next service cycle.

Installing Your Boss 900 Water Softener

an image of a water heater diagram
an image of a water heater diagram
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a water filtrator is connected to the wall with three different types of pipes
a water filtrator is connected to the wall with three different types of pipes
PRO+AQUA 80000 Grain Essential Soft Water Softener one_size | PRO-S-80E
PRO+AQUA 80000 Grain Essential Soft Water Softener one_size | PRO-S-80E

Now that you're familiar with the Boss 900's basics, it's time to install the system in your home. Careful planning and precision are essential for a successful installation. Here's a step-by-step guide:

Tools and Materials

Ensure you have the following tools and materials before starting the installation:

  • Boss 900 water softener
  • Teflon tape or pipe joint compound
  • Pipe cutter or hacksaw
  • Channel locks or adjustable pliers
  • Tape measure
  • Screwdriver
  • Optional: pressure test kit

Step-by-Step Installation

Follow these detailed instructions to install your Boss 900 water softener:

  1. Shut off the main water supply and open nearby faucets to relieve pressure.
  2. Disconnect the main water supply pipe from the water heater or other plumbing fixtures, using a pipe cutter or hacksaw.
  3. Connect the Boss 900 bypass valve to the main water supply pipe, ensuring the water flow direction matches the arrow on the bypass valve.
  4. Install the water softener resin tank and control valve according to the manufacturer's instructions, ensuring proper plumbing connections and electrical wiring.
  5. While installing the bypass valve, ensure the salt tank is positioned to be easily accessible for future maintenance.
  6. Mount the salt tank on the wall or reposition it in a location that meets your preferences and the manufacturer's guidelines.
  7. Fill the salt tank with the recommended amount of softener salt, following the manufacturer's instructions.
  8. Inspect the entire installation for leaks and proper connections. Perform a pressure test if desired.
  9. Turn on the main water supply and allow the Boss 900 to begin the initial pre-setting cycle.

Maintaining Your Boss 900 Water Softener

Regular maintenance is essential to ensure optimal performance and longevity of your Boss 900 water softener. Here are essential maintenance tasks to keep your system running smoothly:

Monitor Salt Levels

Check the salt level in the brine tank periodically. During the regeneration cycle, the system automatically adds water to the brine tank. However, you may need to add more salt as the softener uses it up. Here's what you should do:

  1. Open the brine tank lid.
  2. Check the salt level in the brine tank.
  3. Add softener salt (ocyst mainly salt or potassium chloride) as needed, following the manufacturer's guidelines.

Clean the Resin Bed

Occasionally, the resin bed may require a deep clean to remove any remaining impurities or dirt. Here's how to perform this task:

  1. Access the bypass valve and divert the water flow, so it bypasses the water softener.
  2. Open the drain valve at the bottom of the resin tank to drain any remaining water.
  3. Connect a garden hose to the brine line at the control valve and run water through the system for about 15 minutes to flush the resin bed.
  4. Close the drain valve and drain remnant water from the hose.
  5. Resuming normal water flow through the softener.

Proper care and maintenance ensure your Boss 900 water softener continues to deliver high-quality softened water for years. Regularly monitor your system's performance, and don't hesitate to contact the manufacturer or a licensed plumber if you encounter any issues.

Embrace the benefits of softened water with the Boss 900. Experience happier skin, sparkling clean dishes, and prolonged lifetime of your home's plumbing and appliances. You're now ready to enjoy the fresh, soft water your home deserves.