Mechanical; Integration Constraints - Pentair FLECK 3150 NXT Installer Manual

• make sure the controller power source is plugged in;
• if the electrical cable is damaged, it is imperative that it is replaced by a qualified
personnel.
5.3.4

Mechanical

• Do not use petroleum-based lubricants such as vaseline, oils, or hydrocarbon-
based lubricants. Use only 100% silicone lubricants;
• all plastic connections should be hand-tightened. PTFE (plumber's tape) may be
used on connections that do not use an O-ring seal. Do not use pliers or pipe
wrenches;
• existing plumbing should be in a good shape and free from limescale. In case of
doubt, it is preferable to replace it;
• all plumbing must be completed according to local codes and installed without
tension or bending stresses;
• soldering near the drain line should be done before connecting the drain line to
the valve. Excessive heat will cause interior damage to the valve;
• do not use lead-based solder for sweat solder connections;
• the riser tube should be cut 0 to 3 mm below the top of the tank. Slightly bevel the
ridge in order to avoid deterioration of the seal whilst fitting the valve;
• the drain line must be a minimum of 25.4 mm (1") in diameter;
• do not support the weight of the system on the valve fittings, plumbing, or the
bypass;
• it is not recommended to use sealants on the threads. Use PTFE (plumber's tape)
on the threads of the drain elbow, and other NPT/BSP threads;
• the installation of a pre filter is always recommended (100µ nominal);
• valve inlet/outlet must be connected to main piping via flexible.
5.4

Integration constraints

Location of a water treatment system is important. The following conditions are
required:
• flat and firm level platform or floor;
• room to access equipment for maintenance and adding brine (salt) to tank;
• constant electrical supply to operate the controller;
• total minimum pipe run to water heater of 3 m (10 ft) to prevent backup of HW into
system;
• always install check valve before water heater to protect the softener from HW
return;
• local drain for discharge as close as possible;
• water line connections with shut off or bypass valves;
• must meet any local and state codes for site of installation;
Ref. MKT-IM-010 / C - 18.10.2019
Installer manual Fleck 3150 NXT/NXT2 - Installation
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