Water Factory Systems N4000 Series Installation, Operation And Maintenance Manual Download Page 3

Installation Instructions

A. Determine System Location (Figure. 1&2)

The appliance can be located under a sink or

in a basement depending on space availability and
the customer’s preference. If a basement installation
is selected, additional tubing, hardware and fittings
may be needed and a hole will have to be made
from inside the cabinet, through the floor, to the
basement. Never install in an area of the home
where temperature is freezing as damage to the
system will result. 

The exact placement of the various compo-

nents of the appliance will vary from installation to
installation. The installer, in conjunction with the
customer, must decide on where to place the faucet,
tank and purification assembly by balancing the
homeowner’s convenience with ease of installation
and servicing.

Considerations for an icemaker or other

remote hookup should be predetermined, including
routing and any additional tools, fittings, and tubing
that may be required.

B. Prepare The Area For Installation

To save time it is often advised to call the

customer and request they clear under the sink prior
to arrival. Otherwise, remove supplies from under
the sink and stack them neatly away from the work-
ing area. Arrange a light for the work area, if neces-
sary.

If a basement installation is called for, deter-

mine where components will be located and how
they will be mounted. Special mounting brackets
and hardware may be necessary to secure the sys-
tem to a wall or ceiling joints.

Inspect cold water supply line and drain to

determine if any special fittings, in addition to what
is included in the kit, are required.

NOTE:

It is a good idea at this time to check the

condition of the customer’s undercounter plumbing
for any existing or potential leaks. The customer
should be advised of any problem so there is no
misunderstanding of who is responsible.

C. Prepare The Appliance For Installation

Open shipping carton 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 empty tank is

approximately 7 psi. Adjust if necessary.

If optional percent rejection monitor is selected,

probes should be installed at this time. Follow instruc-
tions that come with the monitor. 

The saddle tapping valve supplied is

designed for use with 3/8” to 1/2” O.D. soft copper
supply tubing (plain or chromed) and rigid metal
pipe (see below). Do not use with flexible ribbed
supply tubing which has too thin a wall thickness
and requires special hardware. Optional feed valves
can be specially ordered from the factory for this
purpose. Also refer to figure 6 on use of the “Push
In” plastic fit- tings.

Soft Copper Tubing Installations:

A)

Turn off cold water valve under the sink, or main

valve for the house.

B)

Before installing saddle tapping valve, make sure

piercing lance does not protrude beyond rubber gas-
ket. See instructions on bag. 

C)

Assemble both halves of saddle tapping valve on

copper tubing.

D)

For 3/8” O.D tubing, use bracket with side projec-

tions to prevent distortion of tubing. Use “V” side of
bracket for all larger size tubing. Tighten screws
evenly and firmly - brackets should be parallel. Do
not deform tubing. See diagram.

E)

To pierce soft copper tube, turn handle clockwise

until it is firmly seated. The valve is closed in this
position. 

F)

Turn on main supply valve to pressurize cold

water line. Check for leaks. With a wrench, tighten
nut/seal around valve stem.

G)

Connect length of orange 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 feed water tubing may have to be used. 

IMPORTANT: Some local plumbing codes may
prohibit the use of saddle-type valve connec-
tions. Optional feed valve assemblies can be
specially ordered from you supplier. See page
11 for further information. 

Rigid Metal Pipe Installations:

A) 

Turn off cold water supply valve and drain the

line to prevent spillage. 

3

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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