Installer Manual Fleck 2910 - NXT - Installation
Ref. MKT-IM-002 / B - 23.05.2018 53 / 114
The drain line must be build with 1" PVC rigid tube with an air gap.
The drain line may be elevated up to 1.8 m providing the run does not exceed 4.6 m and water pressure
at the softener is not less than 2.76 bar. Elevation can increase by 61 cm) for each additional 0.69 bar
of water pressure at the drain connector.
Where the drain empties into an overhead sewer line, a sink-type trap must be used.
Secure the end of the drain line to prevent it from moving.
Note
Waste connections or the drain outlet shall be designed and constructed to provide
connection to the sanitary waste system through an air-gap of 2 pipe diameters or 50.8 mm
(2"), whichever is larger.
Caution
Never insert the drain line directly into a drain, sewer line or trap. Always allow an air gap
between the drain line and the waste water to prevent the possibility of sewage being back-
siphoned into the softener.
5.12. Overflow line connection
In the event of a malfunction, the brine tank overflow fitting will direct “overflow” to the drain instead
of spilling on the floor. This fitting should be on the side of the brine tank. Most tank manufacturers
include a post for the tank overflow connector.
To connect the overflow line, locate the hole on the side of the tank. Insert the overflow fitting into the
tank and tighten with plastic thumb nut and gasket as shown below. Attach a 25.4 mm (1") I.D. tubing
(not supplied) to fitting and run to drain.
Do not elevate overflow higher than overflow fitting.
Do not tie into the drain line of the controller unit. The overflow line must be a direct, separate line
from overflow fitting to drain, sewer or tub. Allow an air gap as per drain line instructions.
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