
MTBE FILTRATION SYSTEM
MODEL US-1000
INSTRUCTION MANUAL
©2013 Pentair Residential Filtration, LLC www.pentairaqua.com

SPECIFICATIONS
Temperature Range: 40–100°F (4.4–37.8°C)
Pressure Range: 30–125 psi (2.1–8.62 bar)
Service Flow Rate @ 60 psi (4.1 bar): 0.5 gpm (1.9 L/min)
Rated Service Life: 500 gallons (1,893 L)
Dimensions: 9.18 in. x 4.70 in. x 12.72 in.
(233 mm x 119 mm x 323 mm)
Weight: 6 lbs. (2.7 kg)
Parts Included
• Filter system with filter cartridges – P-250A Cartridge Set
• Installation hardware
(mounting screws, T-Adapter, quick-connect elbows)
• Housing wrench
• Lead-free drinking water faucet
• 1/4" plastic tubing
PRECAUTIONS
Do not use with water that is microbiologically
unsafe or of unknown quality without adequate
disinfection before or after the system.
Systems certified for cyst reduction may be
used on disinfected waters that may contain
filterable cysts.
Filter must be protected against freezing, which
can cause cracking of the filter and water leakage.
The rubber O-ring provides the water-tight seal
between the cap and the bottom of the housing. It
is important that the O-ring be properly seated in
the groove below the threads of the housing or a
water leak could occur.
Because of the product’s limited service life and to
prevent costly repairs or possible water damage,
we strongly recommend that the bottom of all
plastic housings be replaced every ten years. If the
bottom of your housing has been in use for longer
than this period, it should be replaced immediately.
Date the bottom of any new or replacement
housing to indicate the next recommended
replacement date.
NOTE:
• For cold water use only.
• Make certain that installation complies with all state and
local laws and regulations.
• The contaminants or other substances removed or
reduced by the selected cartridge are not necessarily in
your water. Ask your local water municipality for a copy
of their water analysis, or have your water tested by a
reputable water testing lab.
• After prolonged periods of non-use (such as during a
vacation) it is recommended that the system be flushed
thoroughly. Let water run for 5–6 minutes before using.
• The filter cartridges used with this system have a limited
service life. Changes in taste, odor, and/or flow of the
water being filtered indicate that the cartridge should be
replaced.
About Your PENTEK MTBE Filtration System
Thank you for purchasing a PENTEK MTBE Filtration System.
With only minimal maintenance, your new system will provide
you with safer, better-tasting water for years to come. The
filter cartridges should be changed after every 500 gallons of
use or once every six months, whichever comes first. Filter life
will vary depending on usage and water conditions. Changes in
taste, odor, and/or flow of the water being filtered indicate that
the filter cartridges should be replaced.
US-1000 MTBE Filtration System
The US-1000 MTBE Filtration System uses two carbon filter
cartridges specially formulated to provide safer, cleaner, and
better-tasting water. The US-1000 filtration system is NSF
certified to reduce MTBE, chlorine taste & odor, asbestos
reduction and cyst removal*, lead, mercury and VOC’s in
drinking water (see performance data on p. 7 for specific
claims).
Lead is tasteless and colorless, and may enter your water
supply through lead pipes, lead solder, and brass fittings and
faucets. The US-1000 system has been Tested and Certified
by NSF International to reduce lead below the USEPA Action
Level.
Tools and Materials
Required
•Safetyglasses
•Handorelectricdrill
(cordless recommended)
•1/4"drillbit
•File
•Phillipsheadscrewdriver
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US1000 MTBE Filtration System Instruction Manual
•Adjustablewrenchor7/16”
open-end wrench
•Tubecuttersorutilityknife
If sink does not have hole for
separate faucet:
•Centerpunch
•3/4"drillbitorholesaw
The Model US-1000 is Tested and Certified by NSF
International against NSF/ANSI Standard 42/53 for the
reduction of Taste and Odor, Chlorine, and Particulate
Class I. Standard 53 for the reduction of MTBE, Lead,
Mercury, VOC, Cyst*, and Asbestos..
*NSF/ANSI Standard 53 certified to reduce cysts such as
Cryptosporidium and Giardia by mechanical means

INSTALLATION
• Forstandardunder-sinkinstallationon1/2"14NPSthreads(most
common thread on kitchen faucets) cold water line.
• Pleasereadallinstructionsandprecautionsbeforeinstallingand
using your MTBE Filtration System.
• Numbereddiagramscorrespondwithnumberedsteps.
1. Installing the Water Supply Adapter
The supply adapter fits 1/2"-14 NPS supply threads. If local codes
permit, it may be used to connect the US-1000 to the cold water supply
line. If local codes do not permit the use of the supply adapter, alternate
connectors can be obtained from your local supplier.
A. Turn off cold water supply line. If cold water line does not have a
shut-off valve under the sink, you should install one.
B. Turn on the cold water faucet and allow all water to drain from line.
C. Disconnect cold water line from 1/2"-14 NPS threaded stub on
bottom of main faucet.
D. Apply plumber tape onto threads of faucet stub and supply adapter.
Screw the water supply adapter to the threaded faucet stub as
shown.
E. Using the nut that previously connected the cold water line to the
faucet, screw the cold water line to the male supply adapter threads.
2. Selecting the Faucet Location
NOTE: The drinking water faucet should be positioned with function,
convenience, and appearance in mind. An adequate flat area is
required to allow faucet base to rest securely. The faucet fits
through a 3/4" hole. Most sinks have pre-drilled 13⁄8" or 11⁄2"
diameter holes that may be used for faucet installation. If these
pre-drilled holes cannot be used or are in an inconvenient
location, it will be necessary to drill a 3/4" hole in the sink to
accommodate the faucet.
This procedure may generate dusts which can cause severe
irritation if inhaled or come in contact with the eyes. The
use of safety glasses and respirator for this procedure is
recommended.
DO NOT ATTEMPT TO DRILL THROUGH AN ALL-PORCELAIN
SINK. If you have an all-porcelain sink, mount the faucet in
pre-drilled sprayer hole or drill through countertop next to
sink.
When drilling through a countertop make sure the area
below the drilled area is free of wiring and piping. Make
certain that you have ample room to make the proper
connections to the bottom of the faucet.
Do not drill through a countertop that is more than 1" thick.
Do not attempt to drill through a tiled, marble, granite or
similar countertop. Consult a plumber or the countertop
manufacturer for advice or assistance.
(A) Line bottom of sink with newspaper to prevent metal shavings, parts,
or tools from falling down drain.
(B) Place masking tape over the area to be drilled to prevent scratches if
drill bit slips.
(C) Mark hole with center punch. Use a 1/4" drill bit for a pilot hole, then,
using a 3/4" drill bit or hole saw, drill a hole completely through the
sink. Smooth rough edges with a file.
1
2
3
C
Black
Rubber
Washer
B
D
A
E
C
B
A
3. Mounting the Faucet
(A) Remove wing nut and metal washer from the threaded shaft of the
faucet. Leave the black rubber washer on the threaded shaft.
(B) Slide the threaded shaft of the faucet into drilled hole.
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US1000 MTBE Filtration System Instruction Manual
Wing Nut
Metal
Washer