Note: The plumbing connects to the filters using threaded con- nections. Do not over-tighten the fittings, which may cause damage and leakage. Also do NOT use pipe dope, which voids the war- ranty. You may use NSF-certified pipe primer, glue and plumber’s tape.
FLUSH THE FILTER TO
PRECONDITION Before final connection to the plumbing system, the central filter will need to be pre-conditioned by “surge flushing” it with water. This can even be done with a garden hose before beginning installa- tion. The granular carbon medium used in the tank contains 1 to 2 percent by volume of carbon fines that must be flushed out prior to use. You can use the garden-hose
adapter included with the filter to connect a standard hose to the filter’s inlet port. Slowly turn on the faucet so the discolored water flows through the filter and from the outlet port into a suitable drainage area. The first few gallons will appear black and cloudy due to the carbon fines. After an initial 15-minute flush- ing, begin the “surge flushing” phase by turning on the water supply for 30 seconds and then off for 30 seconds, repeating the cycle for 15 minutes or until the initial surge of water is completely clear and free from discoloration and cloudiness. Once the water is clear, dis- connect the garden hose and position the filter for final installation.
The filters must be installed in an area where the main water line enters the home but before it connects to the water heater.