Installation Guide – DuraLine™IRON BLASTER Water Softeners

Notice: This is only a general instruction reference. Be sure to read your owners manual for any special instructions on your particular softener. The customer is responsible for following any state and/or local regulations and plumbing codes pertinent to the purchase, installation, and operation of our products. Aplus Water LLC always recommends that you have a licensed plumber install your water softener.

Step 1

  • The location of your softener is important. It should be in a protected dry, level, and non-freezing area (34-120 degrees F).
  • The 2 tanks should be set close to each other. The square tank is your salt (brine) tank (for softener salt or potassium chloride). This is the tank that you will have to refill sometimes, so make it the more accessible of the 2 tanks.
  • Do not put salt in this tank until you have put the softener into service and have tested the cycles.

Step 2

  • You will need a standard outlet that is not controlled by a switch.
  • Your IRON BLASTER shipped pre-loaded with the media inside of the tall fiber glass tank.

Step 3

  • You will attached the kdf 85 media guard to the valve.  You will notice that one end of the media guard has teeth that end lock into the bottom of the control valve with a quarter turn to the right (clock wise).
  • We have found it is easiest when placing valve in lap with downward pressure on media guard.  (be sure to align tabs before putting downward pressure)

Step 4

  • The control valve (head) now must be screwed onto the mineral tank. Be sure the large O-ring is in place and lubricated (you can use standard cooking oil to lubricate, if necessary).
  • As you start to screw the control valve onto the tank, make sure the hole in the center of the control valve fits over the distributor tube.

Note: DO NOT USE pipe dope or tape on the threads! The control valve should be hand tightened, snugly, clockwise. DO NOT OVER TIGHTEN VALVE!


  • You are now ready to install the bypass valve to the control valve. Be sure to lubricate o-rings with cooking oil before installing.

Note: DO NOT OVER-TIGHTEN THE SCREWS! Doing so will cause a leak! Just hand-tighten snugly, and that is all that is needed.

Step 5

  • Turn off main water valve. Water connections to and from softener should now be connected.
  • Attach the inlet to the bypass with the arrow pointing in and the outlet to the arrow pointing out.

Here is one example (Left) of one way to hook up to the bypass using hot water heater installation hoses.

Step 6

  • You will need a drain for the backwashing cycles. The drain should be no further than 20 feet from the softener.
  • You will need to purchase this flexible 1/2 i.d. plastic pipe (can also be vinyl, polyethylene, polybutylene, etc) and a small clamp to hold the tubing over the fitting. The same size plastic pipe will be used in Step 8.
  • This backwashing drain line will be under pressure when the backwash cycle is working, so make sure the drain line is secured.
  • The drain line will need to drain into a drain, which should be a minimum of 1 1/2” size, and ideally be below the top of the head of your softener. Local codes should be adhered to.
  • Do not connect the drain line directly into a drain. Allow an air-gap between the drain line and waste line to prevent possibility of back-siphon.
  • Be sure to use teflon tape on this step.
  • Now you will connect the drain line.

Step 8

  • Between the valve and the salt tank you will need to connect the furnished 3/8” O.D. tubing to the controller with compression nut and safety float with the push fitting.
  • Take the cap off the white tube inside the salt tank pictured below.

Note: If overflow is not installed already, now is the time to do it, because it holds the brine well to the salt tank.

  • Connect the 3/8 inch tubing by pushing it into the quick connect elbow in the brine tank.
  • You will be attaching the other end of the tubing and nut to the smaller of the two threaded drains on the controller.

Step 9

  • Salt tank overflow (this is the elbow on the side of your salt tank). Attach 1/2″ i.d. plastic tubing to the fitting from the salt tank and run to a drain.
  • This drain line will not be under pressure. DO NOT tie into the backwash drain line! This line should be higher than your drain line.
  • Overflow drain line must be a separate line from fitting to the floor-drain, sewer, tub, etc.


1. Add water to the salt tank. With a bucket or hose, add approximately 1 to 2 gallons of water to the salt tank.

2. Set your bypass in bypass mode, and slowly turn on the main water valve to your home until all pipes are pressurized. Now open the bypass on the inlet side SLOWLY; you will hear the water softener filling up with water. You do not want to be surprised by leaks. Let the resin tank fill completely, then open the bypass valves the rest of the way. Turn on a nearby faucet until the water runs clears and then turn it off; this is to remove trapped air from the softener.

WARNING: If opened too rapidly or too far, media may be lost out of the tank into the valve or the plumbing. In the 1/4 open position, you should hear air slowly escaping from the valve drain line.

3. Plug the power supply transformer into a socket that is not controlled by a switch or timer.

4. Program your water softener. Set the time of day and gallons between regeneration (capacity). To figure out gallons between regeneration (capacity), simply divide your grain capacity by your water hardness.

For example: 32,000 grain water softener divided by 20 gpg of water hardness = 1600 gallons X 0.85 = 1360. Makes sure to multiply by 0.85 to give a reserve capacity. in this case the capacity should be set to 1360.

To program simply line up the gallons between regeneration. (remember each number is multiplied by 100) with the white dot. To do this pull out on the inner dial with your right hand to turn and hold the outer dial with your left hand to hold in place.

The only things that should be changed are time of day and capacity.

Programming is now complete.

Feel free to call us at 1-877-477-5452, and we can walk you through it in less then 2 minutes! 🙂

5. Once your softener is programmed, advance your controller to manual regeneration. To do this just turn the big dial to Backwash/Rinse. The regeneration process is a 1 to 2 hour process.

6. Check for any leaks during this initial regeneration. Also make sure that there is water in the salt tank after the regeneration is complete.

7. Your softener is now in operation and you can add salt.

Note: Be sure to always have at least one bag of salt in the brine tank at all times. You may fill the salt tank all the way up if you like. Standard water softener salt works well.

Special Note for Metered Units: Be sure the meter cable in the back of the valve is plugged into the meter.