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Installer manual Fleck 2750 NXT/NXT2 - Installation
5.9
Bypassing
A bypass valve system should be installed on all water conditioning systems. Bypass valves isolate
the softener from the water system and allow unconditioned water to be used. Service or routine
maintenance procedures may also require that the system is bypassed.
Normal operation
Softening
System
Out
Caution - material
Risk of damage due to bad mounting !
Do not solder pipes with lead-based solder.
Do not use tools to tighten plastic fittings. Over time, stress may break the connections.
Do not use petroleum grease on gaskets when connecting bypass plumbing. Use only
100% silicone grease products when installing any plastic valve. Non-silicone grease may
cause plastic components to fail over time.
5.10
Drain line connection
Info
Standard commercial practices are expressed here.
Local codes may require changes to the following suggestions.
Check with local authorities before installing a system.
Mandatory
The drain line must be build with ¾" semi rigid or rigid piping ! An air gap must be
present at the drain!
CAUTION
Risk of injury due to whiping hose !
Flexible and semi-flexible hoses may bend and whip during draining.
The drain line may be elevated up to 1.8 m provided 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.
60 / 170
In
In Bypass
Softening
System
Out
Ref. MKT-IM-026 / C - 15.12.2020
In
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