3.4 Installation of drainage pipe and overflow pipe
Note: To ensure smooth operation for the water softener regeneration process,
ensure that there is no blockage of drains.
Note: If the drainage hose is placed too high or is inserted into the sewage, it will cause
pressure drop during water softener regeneration. This will cause incompletion of normal
salt wash regeneration process.
3.4.1 Connect flexible drainage hose (16mm inner diameter) to the drainage control valve. Use hose
clamps to secure hose to prevent hose from coming loose.
3.4.2 Connect the other end of flexible drainage hose to drainage outlet such as floor drain, drainage
pool. Avoid elevating the drainage hose. Long and bending angle is not advisable as “kink” hose may
occur and hose will then need to be replaced.
3.4.3 Secure drainage hose to drainage outlet firmly. During backwash and regeneration process, the
water pressure may loosen the water hose, causing water to sputter out of the drain area. To prevent
backflow of drainage water into the system, there should be clearance of at least 4 cm between the
end of the drainage hose and the sewage drain water. Never insert the drain pipe directly into the
sewage. Do not raised the drain hose to more than 2.5 meters above the ground.
3.4.4 Connect the 13 mm (inner diameter) hose to the barrel or overflow outlet of the salt tank
and secure with hose clamps.
3.4.5 Fix the overflow drainage hose to drainage outlet such as floor drain, drainage pool. The
overflow drainage hose must be below the overflow outlet. Do not connect with the 16mm inner
diameter soft drainage hose in 3.4.1.
Inlet and Outlet
Water Hose
Overflow
Drainage Hose
Drainage
Outlet
Floor Drain
Power Socket
Fig 3.4a SFT-150/200 Installation Guide
