Important Installation Recommendations
Read entire manual. Failure to follow all guides and rules could cause personal injury or property damage.
Check with your local public works department for plumbing
codes. You must follow their guides as you install the Water
Use the Water Filtration system on a potable, safe-to-drink, home
COLD water supply only. The filter cartridges will not purify water
or make unsafe water safe to drink. DO NOT use on HOT water
(100° F. max.).
Protect the Water Filtration system and piping from freezing.
Water freezing in the system will damage it.
Your Water Filtration system will withstand up to 125 psi water
pressure. If your house water supply pressure is higher than 100
psi during the day (it may reach higher levels at night), install a
pressure reducing valve before the system.
Tools and Materials Required for Installation
Slotted and Phillips screwdrivers
Pliers and adjustable jaw wrench
Hand or battery powered drill and 1 ⁄ 4 bit (saddle valve
Electric drill and drill bit to drill 3⁄ 4 hole (type as required)
if mounting hole is needed for faucet
Be sure to use the proper procedure for drilling porcelain or
stainless steel. Special drill bits may be needed.
CAUTION: To avoid damaging the sink, consult a qualified
plumber or installer for drilling procedures. Special drill
bits may be needed for porcelain or stainless steel.
Locate the drinking water
system on the cold water
supply pipe, under the
kitchen and/or bathroom
sink, to filter the cold
NOTE: To change the filter cartridge, you
must turn off the water. A nearby shutoff
valve is convenient. Most sinks already
have shutoff valves on the supply pipes.
Water supply valve
WARNING: Do not use with water that is microbiologically
unsafe or of unknown quality without adequate
disinfection before or after the system. GX1S15C is
certified for cyst reduction and may be used on disinfected
water that may contain filterable cysts. The water should be
tested periodically to verify that the system is performing
satisfactorily. Small parts remaining after the installation
could be a choke hazard. Discard safely.
Contents included with the product:
Water filter assembly, including mounting bracket and
Product Literature (Owner's Manual and Installation,
Product Data Sheet, Owner Product Registration Card)
Water supply/saddle valve
Filtered water faucet, for sink or countertop mounting
3 ⁄ 8 tubing and fittings to make all needed connections