ONE CW-840-1 Installation Instructions & Owner's Manual page 6

INSTALLATION INSTRUCTIONS FOR CW-840-1:
6. INSTALLING GROUND: To maintain an electrical ground in metal plumbing of a home's
cold water piping (such as a copper plumbing system), install a ground clamp or jumper
wiring.
NOTE: If replacing an existing filter, also replace the ground clamps/wire.
7. DRAIN LINE: First, be sure that the drain can handle the rinse rate of the system. At
the bottom of the tank is a 1" NPT socket to accommodate a drain. The purpose of the
drain is to manually (or automatically, if desired) rinse the filter tank and cartridge of any
debris. This can prolong the life of the cartridge. It is highly recommended to provide a
means to drain the tank and to relieve pressure for cartridge replacement.
CAUTION: If a drain is not used or the installation makes this unavailable, the
1" hole must be plugged or water will flow from this outlet.
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