Steps:
- Remove the control head from the water softener and pull out the tank.
- Dump the old resin beads from the tank, and flush the tank clean using a garden hose.
- Place new manifold tube inside of tank; temporarily seal top end of tube with piece of electrical tape.
- Dump several inches of gravel into tank; fill remainder of tank with resin beads.
- Remove tape from top of tube, then thread new control head onto manifold tube.
- Install a new valve onto the control head.
- Make plumbing connections joining cold-water supply to tank, and water-supply line to the house.
- Install a second tank next to the water softener, and fill it with blocks of sodium to create a brine solution.
- Make the pipe connections joining the brine-solution tank to the water softener.
- Connect the discharge hose to softener.
- Once all connections are made, turn on the water and check for leaks.