Installer manual Evolio 255 740-760 - Installation
Ref. MKT-IM-037 / D - 25.10.2021
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• 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;
• observe the drain line requirements: maximum 1 m high at 2 bars inlet pressure. Add 50 cm
for additional 1 bar at the softener’s inlet;
• the valve is designed for minor plumbing misalignments. 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 25.4 mm (1") NPT elbow, the drain line connections, and other NPT/BSP
threads.
4.4
Integration constraints
Location of a water treatment system is important. The following conditions are required:
CAUTION
The surface for installation (platform or floor) must be solid, flat and level.
Mandatory
Drain must be capable of handing a maximum backwash flow rate of 19 L/min.
• locate the softener as close as possible from drain discharge point and within 12.2 m
maximum of drain discharge point, respecting minimum drain line diameter advises given at
chapter Drain line connection [
• 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 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;
• use flexible piping to connect main piping to softener;
• be sure all soldered pipes are fully cooled before attaching plastic valve to the plumbing.
4.5
Softener connection to piping
Tip
To prevent your softener from incoming sediment and iron particles, Pentair
recommends the installation of a 100 μm pre-filter upstream the unit.
Summary of Contents for Evolio 255 10
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