Integration Constraints; Valve Connection To Piping - Pentair Fleck 4600-MECH Installer Manual

• the riser tube should be cut flush with 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 12.7 mm (½") in diameter. Use 19 mm (¾") pipe if the
backwash flow rate is greater than 26.5 lpm (7 gpm) or the pipe length is greater than 6 m 
(19 ft 8 in);
• 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 prefilter 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 to prevent backup of hot water into system;
• always install check valve before water heater to protect the softener from hot water 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;
• valve is designed for minor plumbing misalignments. Do not support weight of system on the
plumbing;
• be sure all soldered pipes are fully cooled before attaching plastic valve to the plumbing.
5.5.

Valve connection to piping

The connections should be using PTFE (plumber's tape) on the threads if using the threaded
connection type.
In case of heat welding (metal type connection), the connections should not be made to the valve when
soldering.
Note
See chapter 3.3. Description and components location, page 17 to identify the connections.
Ref. MKT-IM-027 / B - 01.06.2018
Installer Manual Fleck 4600 - MECH - Installation
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