Screw the 3-way diverter valve onto the cold water line. Tighten securely with the wrench, ensuring you do not over-tighten, which can crack the fittings.
Cut a length of white tubing. Connect one end to the diverter valve and the other end to the INLET port of the external pre-filter. galaxy aqua premier installation manual better
Do not consume the first batch of water generated by a new installation. Screw the 3-way diverter valve onto the cold water line