background image

B)

Drill 3/16” hole at the desired location. To prevent

shock hazard, use a battery operated drill.

C)

Turn valve handle clockwise to expose piercing

lance beyond the rubber gasket no more than 3/16”.

D)

Assemble saddle valve on the supply pipe by 

screwing the two halves together. Use the “V” side
of the bracket. Tighten screws evenly and firmly,
keeping the two sides of the bracket parallel. 

E)

Turn saddle valve handle clockwise to close

valve. With a wrench, tighten nut/seal around stem.

F)

When you wish to open valve and supply cold

water to the unit, turn valve handle counterclockwise.

G)

Connect appropriate length of 1/4” tubing to the

feed water valve, using brass compression nut,
insert, and plastic sleeve. See diagram.

NOTE: 

For basement installations, a longer length

of orange feed water tubing may have to be used.

E. Prefill And Sanitize The Storage Tank

Prefilling the tank is always recommended so there
is pressure to check for leaks and several gallons of
water to flush carbon post filter. Tanks are furnished
with a special disinfection capsule which sanitizes
the tank when it is filled with water. An instruction
tag will accompany the tank. It is important to use a
sanitizer when prefilling the tank so the solution can
sanitize the tubing, fittings, and faucet at the time of
installation and startups. 

A)

Insert free end of orange feed water tubing into

the “Push In” fitting on the storage tank. 

B)

Open feed water valve and tank and allow to fill

(about 3 minutes). 

C)

Turn off feed water valve and tank valve and set

tank aside (15 minutes minimum).

NOTE:

If an alternative storage tank is used without

a disinfection capsule, it should be sanitized with
household bleach (5.25%). Use 1 ml bleach per gal-
lon of tank capacity. 

F. Install The Drain Connection (fig.4)

For Basement Installations See page 8

Undercounter Installations:

IMPORTANT: Before starting this procedure,
inspect the condition of the drain piping, espe-
cially in older homes where the traps and tail-
pieces can be deceptively thin and frail. If in
poor condition, it is wise to inform the customer
that the condition should be remedied.

IMPORTANT: Some local plumbing codes may
prohibit the use of saddle-type drain connec-
tions. See page 11 for further information. 

The drain saddle assembly is designed to fit

around a standard 1-1/2” O.D. drain pipe. For small-
er (lavatory type) or larger (ABS pipe) drains, con-
sult the factory for special drain saddles.

The drain saddles should always be installed

above (before) the trap and on the vertical or horizontal
tailpiece. Never install the drain saddle close to the
out- let of a garbage disposal or plugging of the RO
drain line may occur.

A)

Position threaded half of drain saddle at selected

location and mark the spot through the opening. 

B)

Drill a 1/4” hole at the marked spot through one

side of drain tailpiece.

C)

Position both halves of drain saddle on drain pipe

so threaded opening lines up with the hole in drain
pipe. 

D)

Use bolts and nuts to clamp drain saddle onto

drain pipe. Do not over tighten and make sure there
is equal space between saddle halves on each side.

E)

Wrap Teflon

®

tape on thread of drain saddle

elbow and tighten into drain saddle. Orient elbow in
the direction of RO faucet location.

G. Install The Faucet (Fig.5)

Undercounter installations generally require that the
faucet is installed with the air gap module. In base-
ment installations, the air gap module can be elimi-
nated only if one is provided elsewhere in the drain
line.

IMPORTANT: The Uniform Plumbing Code dic-
tates that there must be an air gap between the
RO line and the waste drain.

NOTE:

An optional non-air gap faucet, which

requires a smaller (9/16”) hole, is available from the
factory to make basement installations easier.

A wide variety of RO faucet mounting situa-

tions can be encountered, the most common being
stainless steel and ceramic on metal sinks. Consult
the factory for other materials encountered.

4

Teflon is a registered trademark of E.I. Dupont.

Summary of Contents for N4000 Series

Page 1: ...allation Operation and Maintenance Manual WATER FACTORY SYSTEMS N4000 N4500 N5000 Reverse Osmosis RO Drinking Water Appliance CUNO Incorporated 400 Research Parkway Meriden CT 06450 Tele 203 237 5541...

Page 2: ...nside Make sure to flush it thoroughly as directed before first use Table Of Contents Installation Instructions A Determine the appliance location B Prepare the area for installation C Prepare the app...

Page 3: ...and remove compo nents Check that all installation parts are present which includes the purification assembly storage tank faucet installation hardware and tubing Check that the air supply in the empt...

Page 4: ...the condition of the drain piping espe cially in older homes where the traps and tail pieces can be deceptively thin and frail If in poor condition it is wise to inform the customer that the conditio...

Page 5: ...air gap module Plumber s putty It is important to understand what is involved in this procedure First the glassy layer of porcelain must be penetrated through to the base metal Second a center disc o...

Page 6: ...usually mounted to the right or left sink cabinet sidewall taking into consideration the space available and the tank loca tion Generally the tank is placed in the rear of the sink cabinet while the...

Page 7: ...faucet until a steady stream of water flows Close faucet wait at least 5 minutes and carefully check for leaks Correct as necessary NOTE When the system is first turned on water may intermittently sp...

Page 8: ...er and hex nut onto the threaded nipple Hand tighten hex nut until faucet feels snug E After rechecking faucet orientation tighten hex nut 9 16 wrench or deep socket until faucet feels secure NOTE Fla...

Page 9: ...ion and slide faucet handle forward over spout hole to gain access to faucet valve Unscrew the tee bar and slotted bushing to remove valve Clean out obstruction or replace with new valve mechanism as...

Page 10: ...pipe farther from Properly plug original hole Caution Make sure drain saddle is always installed above before the the trap Fig 4 10 General Basement Installation Schematic Fig 2 Faucet with Air Gap 1...

Page 11: ...n Saddle Elbow Drain Saddle Mount drain saddle at either location Hole should be located on top of the pipe NOTE Some state and local plumbing codes may prohibit the use of saddle type valves and or d...

Page 12: ...tubing selected for use with these connectors be of high quality exact size and roundness and with no surface nicks or scratches If it is necessary to cut the tubing use a plastic tubing cutter or sh...

Page 13: ...only yearly replacement C Recommended maximum sediment prefilter service life is one year When To Replace Carbon Prefilter 4500 and 5000 Series Only The carbon prefilter removes free chlorine from th...

Page 14: ...low sanitizing and start up procedures for the storage tank and purification assembly outlined in Section IV IV RO Appliance Sanitization To assure the highest quality water from your Water Factor RO...

Page 15: ...he Purification Assembly Sanitizing the purification assembly generally requires New prefilter cartridge s and filter housing O ring s Water Factory filter wrench or equivalent Common household bleach...

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