Bypassing; Drain Line Connection - Pentair FLECK 3150 NXT Installer Manual

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
Out
CAUTION
Do not solder pipes with lead-based solder.
CAUTION
Do not use tools to tighten plastic fittings. Over time, stress may break the connections.
CAUTION
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 2" PVC rigid tube. An air gap must be present at the
drain.
CAUTION
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.
Ref. MKT-IM-010 / C - 18.10.2019
Installer manual Fleck 3150 NXT/NXT2 - Installation
Softening
System
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In Bypass
Softening
System
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