INSTALLATION MANUAL
DWSB-TFC-50
DWSB-50-PUMP
12630 US 33 N.
Churubusco, IN 46723
Ph. (260)693-1972 Fax (260)693-0602
www.sterlingwatertreatment.com
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TABLE OF CONTENTS:
SECTION I. INTRODUCTION........................................................................3
SECTION II. SPECIFICATIONS.....................................................................3
SECTION III: PREPARATION.........................................................................4
A. Major System Components......................................................................................................4
B. Tools Recommended for Installation.........................................................................................4
C. Determine System Location......................................................................................................4
D. Prepare the Area for Installation...............................................................................................5
E. Prepare the Appliance for Installation.......................................................................................5
SECTION IV. INSTALLATION STEPS...........................................................5
A. Install the Faucet......................................................................................................................6
1. Make the Faucet Mounting Hole....................................................................................6
2. Mount the Faucet...........................................................................................................7
B. Install the Feed Water Valve and Tubing................................................................................7
C. Prefill and Sanitize the Storage Tank.......................................................................................7
D. Install the Drain Connection.....................................................................................................8
E. Install the RO Membrane.........................................................................................................8
F. Make Initial Tubing Connections..............................................................................................9
G. Install the Purification Assembly and Storage Assembly..........................................................9
H. Make Final Tubing Connections...............................................................................................9
I. Install Ice Maker Hookup (optional)..........................................................................................9
J. Start up the System...................................................................................................................9
K. Flush System of Preservative and Check Operation................................................................9
SECTION V: OPERATION & MAINTENANCE...................................................10
A. Normal Operation....................................................................................................................10
B. Changing Filters......................................................................................................................10
C. For Systems Equipped with Quick Connect Fittings...............................................................12
SECTION VI: TROUBLESHOTTING GUIDE......................................................13
LIMITED WARRANTY.........................................................................................15
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SECTION I. INTRODUCTION
Recommended Filter Change Schedule*
1 - Pre-filter, 10”, 5 Micron 6 Months
2 - Granulated Activated 6 Months
Carbon Pre-Filter
3 - Carbon Pre-filter for 6 Months
Chlorine Removal
4 - Reverse Osmosis 24-36 Months
Membrane
5 - Inline Carbon Post Filter 6 Months
*Based on standard conditions
Congratulations, you have just purchased one of
the finest Reverse Osmosis Drinking Water
Appliances available.
Like any other fine product, this appliance requires
periodic maintenance in accordance with the
schedule outlined below.
Your new Reverse Osmosis (R.O.) Drinking Water
system uses a combination of filtration technologies
to reduce unwanted contaminants in a water
supply. The following steps combine to give you the
best in clear sparkling drinking water:
MECHANICAL FILTRATION - The sediment prefilter will remove the larger particles such as silt,
rust and scale. Its 5 micron (equal to 0.0002 inch)
nominal rating helps to give maximum life to the
R.O. Membrane and carbon filter.
SECTION II. SPECIFICATIONS
TABLE A – QUALIFIED SYSTEM PERFORMANCE
Because the performance of an R.O. Membrane is highly dependent upon pressure, temperature and TDS, the
following should be used for comparison purposes only.
U.S. Metric
Membrane Production1 40-60 gpd 151-227 Ipd
Membrane TDS Reduction1 93% minimum 93% minimum
Drain (reject water) Flow 3-5 x product flow 3-5 x product flow
Empty Storage Tank Precharge 5-7 psig air 35-48 kPa air
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Industry standards measure R.O. Membranes performance with no backpressure on the product water, at 65 psig
(448kPa) and 77°F (25°C). Further conditions on the above are 600 ppm TDS. Production rate and TDS reduction figures
are for a new Membrane that has been rinsed for 24 hours. The production rate of a new Membrane can decrease by
10% per year or more, depending upon the scaling and fouling tendencies of the Feed Water.
ACTIVATED CARBON PRE FILTERS - The first
carbon filter contains granular activated carbon
which removes chlorine and absorbs organics that
can damage the membrane. The second carbon
filter is a carbon block that has activated carbon
with a smaller pore size to increase the range of
organics removed and extend the amount of
chlorine reduction. Carbon block filter has a five
micron rating to further protect the membrane.
REVERSE OSMOSIS MEMBRANE -The R.O.
Membrane is the heart of the filtration system. It is
designed to reduce the dissolved mineral content of
the water. Minerals picked up in the environment by
the water are measured as Total Dissolved Solids
(T.D.S.).In the Reverse Osmosis process,
dissolved minerals are separated from the incoming
water (Feed Water) to produce the product water
(the Permeate). The excess minerals are rinsed to
drain (the Reject Water). The spiral wound
construction of the R.O. Membrane provides
maximum surface area for water production and is
less susceptible to fouling by particulate matter,
turbidity and colloidal materials.
ACTIVATED CARBON POST FILTER - The Inline
Carbon Post Filter cartridge contains carbon particles with a vast network of pores. The tremendous
surface area of these pores (typically 800-1200
square meters per gram of carbon) gives the
carbon very good adsorptive sites for chlorine as
well as other substances that contribute to tastes
and odors. The product water from the membrane
as well as the holding tank passes through the
Activated Carbon Post filter on the way to the
Dispensing Faucet. The Activated Carbon Post
Filter reduces tastes and odors that may pass
through the system. It adds a final “polish” to the
water.
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TABLE B – RECOMMENDED OPERATING LIMITS FOR FEED WATER
Specifications T.F.C. Membrane
Water Pressure 40-100 psig (280-690 kPa)
TDS 2000 ppm (also mg/l) max.
Temperature 40-100°F (4-38°C)
pH 4-11 (optimum rejection at pH 7.0 – 7.5)
Hardness Less than 7 gpg (120 mg/l) or soften
Iron Less than 0.1 ppm (also mg/l)
Manganese Less than 0.05 ppm (also mg/l)
Hydrogen Sulfide None
Chlorine See note
Bacteria Must be potable**
NOTE: Chlorine will damage a T.F.C. Membrane. The Activated Carbon Prefilters have been designed to reduce chlorine from
the incoming water. Change filters every 6 months, more often if the water contains more than 1 ppm chlorine.
**DO NOT USE WITH WATER THAT IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN QUALITY.
SECTION III: PREPARATION
A. Major System Components
The following components comprise the R.O. Drinking Water System:
1. A Reverse Osmosis assembly consisting of the
aluminum bracket, filter housings, automatic
shut-off, membrane module and an in-line
carbon filter.
2. A drinking water holding tank.
3. A faucet kit.
4. A plastic tubing kit with self-piercing saddle valve
and drain clamp.
5. Other items necessary for installation may
include wood screws or machine screws for
mounting the R.O. assembly concrete anchors
may be required for hanging on basement wall,
additional tubing or tube connectors, and plastic
wire ties for organizing tubing.
Note: For systems equipped with Quick Connect
fittings, see page 11.
B. Tools Recommended for Installation
The following tools will cover most of the installation
sites encountered:
3/8" variable speed electric drill.
Extension work light with outlet.
Safety Glasses.
1-1/4" porcelain hole cutter kit.
1-1/4" Greenlee hole punch and 1/8" and
1/2"metal drill bits for pilot hole.
Center punch and hammer.
1-1/4" wood bit.
Assorted wood and metal drill bits including
7/32" metal drill bit.
Phillips head and flat blade screwdrivers.
1/2", 9/16" and 5/8" open end wrench.
10" Crescent wrench with jaws taped to
hold faucet.
Teflon tape.
Wide masking tape or duct tape.
Plastic tubing cutter.
Extra plastic tubing.
Low range air pressure gauge.
Bicycle hand air pump.
Small bottle of liquid chlorine bleach.
C. Determine System Location
The R.O. system 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.
Considerations for an ice maker or other remote
hook up should be determined, including routing
and any additional tools, fittings, and tubing that
may be required.
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1) Faucet - The faucet should be placed near
the sink where drinking water is normally
obtained. Convenience of use (filling of
water pitchers and glasses), and an open
area beneath the faucet under the sink for
attaching product tubing are considerations.
A 2" diameter flat surface is required above
and below the mounting site. The thickness
of the mounting surface should not exceed
1-1/4".Watch for strengthening webbing on
the underside of cast iron sinks.
2) Drinking Water Holding Tank - The holding
tank may be placed where it is convenient
within 10 feet of the faucet. Under the sink
or in an adjacent cabinet are best choices. If
a longer run of tubing is required, the tubing
should be 1/2" diameter O.D. size to prevent a high pressure drop. Remember,
these tanks can weigh up to 30 pounds
when full of water, a firm, and level area is
required.
3) R.O Assembly - The R.O. Assembly may be
mounted on either the right or left side of the
under-sink area or a cabinet. Mounting in
the basement is also an option, one
possible location is near the laundry /utility
sink where cold potable water and drain
access is handy. The mounting location
should allow adequate clearance and
accessibility for cartridge changes.
4) Feed Water Connection - The self-piercing
feed water shut off valve should be located
as close to the R.O. assembly as possible.
USE A POTABLE COLD WATER SUPPLY
ONLY. Softened water is preferred as it will
extend the life of the R.O. Membrane.
5) Drain Connection - The drain saddle
assembly is designed to fit around a
standard 1-1/2" OD drain pipe. The drain
saddle should always be installed above
(before) the trap and on the vertical or
horizontal tail piece. Never install the drain
saddle close to the outlet of a garbage
disposal or plugging of the RO drain line
may occur. If discharging into an utility sink
or standpipe, an air gap of greater than 1"
above the flood rim must be provided. Do
NOT connect the system drain line to the
dishwasher drain or near the garbage
disposal.
D. 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 working
area. Arrange a light for the work area, if
necessary.
If a basement installation is called for, determine
where components will be located and how they will
be mounted. Special mounting brackets and
hardware may be necessary to secure the system
to a wall or ceiling joists.
Inspect cold water supply line and drain to
determine if any special fittings, in addition to what
is included in the kit, are required.
E. Prepare the Appliance for Installation
Open shipping carton and remove components.
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.
SECTION IV. INSTALLATION STEPS
All plumbing should be done in accordance with
state and local plumbing codes.
NOTE: Some codes may require installation by a
licensed plumber; check with the local plumbing
authority prior to installation.
In restricted under-sink areas, it may be easier to
install the faucet first. Allow adequate tubing
lengths for any final component position.
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