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5.3.4
Mechanical
Caution - material
Risk of damage due to wrong lubricant use !
Do not use petroleum-based lubricants such as vaseline, oils, or hydrocarbon-based
lubricants.
Use only approved silicone grease or soapy water !
• 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 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 or the pipe length is greater than 6 m;
• 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;
• 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.
Ref. MKT-IM-013 / E - 23.09.2020
Installer manual Fleck 5600 SXT - Installation
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