Watts ZRO-4 User Manual
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Warning
Please read carefully before proceeding with installation. Failure to follow attached
instructions or operating parameters may lead to the product’s failure.
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Model ZRO-4
ZERO WASTE REVERSE OSMOSIS SYSTEM
System Tested and certified by NSF
International against NSF/ANSI Standard
58 for the reduction of the claims specied
on the performance data sheet.
Watts Premier, Inc. 8716 W Ludlow Drive Suite #1 Peoria, AZ 85381
Phone: 800-752-5582 www.wattspremier.com Fax: 623-866-5666
#199229 Manual Date: 10/26/11
System Tested and certified by WQA
against NSF/ANSI Standard 58 for the
reduction of the claims specied on the
performance data sheet.
Thank you for your purchase of a state of the art Watts Premier Zero Waste Reverse Osmosis (RO) water treatment
system. Water quality concerns are quickly becoming more of a focus for the public. Lately you may have heard about
contaminants in the drinking water, such as arsenic, perchlorate, chromium, cryptosporidium or Giardia. There may also
be some local water issues in your area such as high levels of lead, radium and copper. This Watts Premier water treatment
system has been designed and tested to provide you with high quality water for years to come. The following is a brief
overview of the system.
Your Zero Waste Reverse Osmosis System:
Osmosis is the process of water passing through a semi permeable membrane in order to balance the concentration of
contaminants on each side of the membrane. A semi permeable membrane is a barrier that will pass some particles like clean
water, but not other particles like arsenic and lead.
Reverse osmosis uses a semi permeable membrane; however, by applying pressure across the membrane, it concentrates
contaminants (like a strainer) on one side of the membrane, producing crystal clear water on the other. This is why RO
systems produce both clean drinking water and waste water that is ushed from the system. In an effort to provide high
quality drinking water while meeting the water supply challenges across the country, Watts Premier has patented this Zero
Waste RO system. This Zero Waste RO is 100% effective in providing high quality reverse osmosis drinking water while
not wasting any water down the drain.
This Zero Waste reverse osmosis system also utilizes carbon block ltration technology, and can therefore provide a higher
quality drinking water than carbon ltration systems alone.
Your system is a four stage RO which is based upon separate treatment segments within the one complete water ltration
system. These stages are as follows:
Stage 1 – Sediment lter, recommended change 6 months.
The rst stage of your RO system is a ve micron sediment lter that traps sediment and other particulate matter
like dirt, silt and rust which affect the taste and appearance of your water.
Stage 2 – Carbon lters, recommended change 6 months.
The second stage contains a 5 micron carbon block lter. This helps ensure that chlorine and other materials that
cause bad taste and odor are greatly reduced.
Stage 3- Membrane, recommended change 2-5 years.
Stage three is the heart of the reverse osmosis system, the RO membrane. This semi permeable membrane will
effectively take out TDS, Sodium and heavy metals such as arsenic, copper, and lead, as well as Cysts, such as
Giardia and cryptosporidium. Because the process of making this high quality drinking water takes time, your RO
water treatment system is equipped with a storage tank.
Stage 4- Carbon inline lter, recommend change 6 - 12 months.
The nal stage is an inline granular activated carbon (GAC) lter. This lter is used after the water storage tank,
and is used as a nal polishing lter.
System Maintenance
Just because you can not taste it, does not mean that it is not there. Contaminants such as lead, chromium and arsenic (to
name a few) are undetectable to the taste. Additionally, over time if you do not replace the lter elements, other bad tastes
and odors will be apparent in your drinking water.
This is why it is important to change out your lters at the recommended intervals as indicated in this system manual. When
replacing the lter elements, pay special attention to any cleaning instructions. Should you have any further questions please
refer to our website at www.wattspremier.com or call our customer service dept. at 1-800-752-5582.
** Before installation, please take a moment to ll out the warranty card on page 21-22.
Thank you for your purchase of a Watts Zero Waste Reverse Osmosis system. With proper installation
and maintenance, this system will provide you with high quality water for years to come. All of Watts
water enhancement products are rigorously tested by independent laboratories for safety and reliability.
If you have any questions or concerns, please contact our customer service department at
1-800-752-5582 (outside USA 480-675-7995).
Table of Contents
Operational Parameters ........................................................................................................................ 4
Contents of Reverse Osmosis System .................................................................................................. 4
Tools Recommended For Installation .................................................................................................... 4
Important Notice .................................................................................................................................... 5
Drill a Hole for the Faucet in a Porcelain Sink ....................................................................................... 5
Punch a Hole for the Faucet in a Stainless Steel Sink .......................................................................... 5
Installation of Faucet ............................................................................................................................. 6
Connect Blue Tube from the RO to the Fuacet ..................................................................................... 6
Adapt-a-Valve Installation ...................................................................................................................... 7
Connect the Green and Black Tubing.................................................................................................... 7
Mounting the RO Module....................................................................................................................... 7
Tank Ball Valve Installation ................................................................................................................... 7
Blue Tube Connection (From the RO Module to TANK) ........................................................................ 8
Start up Instructions............................................................................................................................... 8
6 Month System Maintenance ............................................................................................................... 9
Annual Maintenance ............................................................................................................................ 10
Membrane Maintenance .......................................................................................................................11
Check Air Pressure in the Tank ........................................................................................................... 12
Trouble Shooting ................................................................................................................................ 12
Faucet Adjustment ............................................................................................................................... 13
Performance Data Sheet ..................................................................................................................... 14
Arsenic Fact Sheet .............................................................................................................................. 15
Flow Chart ........................................................................................................................................... 16
Parts List.............................................................................................................................................. 17
Other Products by Watts Premier ................................................................................................... 18-20
Warranty Registration ..................................................................................................................... 21-22
Service Record .................................................................................................................................... 23
Warranty .............................................................................................................................................. 24
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Operational Parameters
Installation must comply with State and local plumbing regulations. This system is to be installed
to treat cold water only.
Operating Temperatures: Maximum 100°F (37.8°C) Minimum 40°F (4.4°C)
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Operating Pressure: Maximum 85 psi (6.0 kg/cm
) Minimum 40 psi (2.80 kg/cm
pH Parameters: Maximum 11 Minimum 2
Iron: Maximum 0.2 ppm
TDS (Total Dissolved Solids) < 1800 ppm
Turbidity < 5 NTU
Hardness: Recommended hardness not to exceed 10 grains per gallon, or 170ppm. System will
operate with hardness over 10 grains but the membrane life may be shortened. Addition of a water
softener may lengthen the membrane life.
Water Pressure: The operating water pressure in your home should be tested over a 24 hour period
to attain the maximum pressure. If the incoming water pressure is above 85 psi a pressure regulator
is recommended and if over 100 psi then a pressure regulator is required.
Copper Tubing: Reverse Osmosis water should not be run through copper tubing as the purity
of the water will leach copper causing an objectional taste in water and pin holes may form in the
tubing. Watts Premier supplies speciality lters (part number 107008) that can be used if copper
tubing follows the Reverse Osmosis unit. Be sure to follow any state or local regulations during
installation.
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)
* Note: RO unit must be installed a minimum of 25 Pipe feet from water heater *
System includes:
RO module, 24 volt Pump, 3 gal Storage tank, Long
reach faucet, Manual, Warranty Card, Parts Bag (2 Water
line tting valves, 2 Washers,Transformer, 2 Mounting
screws, 1 Teon tape roll, 2 Brass inserts, 2 Plastic
sleeves, 1 Ball valve)
If any of the items are missing please contact Watts at
1-800-752-5582 prior to installing
Tools recommended for installation
7/16” Drill bit for faucet
Channel lock pliers
Phillips Screw Driver
1/2” - 5/8” Open End Wrench
Adjustable Wrench
Sharp knife
Electric Drill
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***IMPORTANT NOTICE***
Not recommended for use on homes equipped with tankless water heaters. Contact Watts Premier for
specic details regarding this unit and tankless water heaters.
System was tested in a laboratory setting utilizing a hot water heater of 40 gallons set at 120º F.
Performance may vary if your heater is smaller than 40 gallons or set above 120º F, contact the
manufacturer for additional details.
System should not be used on homes equipped with a backow prevention on the hot water heater.
This device is 100% efcient, as no water is lost to drain in the production of the RO water.
Drill a Hole for the Faucet in a Porcelain Sink
Note:
Step 1
Step 2
Step 3
Step 4
Most sinks are pre drilled with 1 ½” or 1 ¼” diameter hole that you can use for your
RO faucet. (If you are already using it for a sprayer or soap dispenser, see step 1)
Porcelain sinks are extremely hard and can crack or chip easily.
Use extreme caution when drilling. Premier accepts no responsibility for
damage resulting from the installation of faucet.
Determine desired location for the RO faucet on your sink and place
a piece of masking tape on over where the hole is to be drilled. Mark
the center of the hole on the tape.
Using a variable speed drill set on the slowest speed, drill a
hole through both porcelain and metal casing of sink at the marked
center of the desired location. Use lubricating oil or liquid soap to keep
the drill bit cool (If drill bit gets hot it may cause the porcelain to crack
or chip).
Using a 1/2” hole saw, proceed to drill the large hole. Keep drill speed
on the slowest speed and use lubricating oil or liquid soap to keep the
hole saw cool during cutting.
Make sure the surroundings of the sink are cooled before mounting the
faucet to the sink after drilling and remove all sharp edges.
1
/8“ pilot
Punch a Hole for the Faucet in a Stainless Steel Sink
Note:
Step 5
If mounting faucet to a Stainless Steel Sink you will need a 1/2”
minimum hole punch. The faucet opening should be centered
between the back splash and the edge of the sink, ideally on the
same side as the vertical drain pipe.
Drill a ¼” pilot hole. Use a 1/2” Hole Punch and an adjustable wrench
to punch the hole in the sink.
The faucet can now be installed.
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Installation of Faucet
Step 6
Step 7
Step 8
Place the escutcheon chrome plate and the black rubber washer on the faucet shank.
(Parts found in faucet parts bag).
Insert the faucet shank through the hole in sink and let it rest on the sink top.
From the underside of the sink, slide on the locating washer, lock washer and brass
nut onto the shank. Check orientation of faucet then tighten brass nut securely.
Connect Blue Tube from the RO to the Faucet
Step 9
Step 10
Locate the blue 1/4” tube attached to the RO module labeled
“Faucet”. Remove a brass nut, plastic sleeve and brass insert from
the parts bag. To assemble, place the brass nut on the blue tube
rst, then the sleeve (small tapered end of sleeve must point to the
end of tube) and then push the brass insert all the way into the end
of the tube. (See Picture)
Insert the blue tube into the end of the faucet shank and use a
wrench to tighten the brass nut securely.
6
Adapt-a-Valve Installation
Water supply line to the system must be from the cold water supply line only. Hot water
connection is used for rinse water return and must be connected for system to function correctly.
* Washer
Conguration for 3/8”
(With Brass Fittings)
* Insert White Washer
Step 11
Step 12
Turn off the cold and hot water supply to the faucet by turning the angle stop valve completely
off.
Attach the Adapt-a-Valves as illustrated in the three photos above, choosing the
conguration that ts your plumbing.
Do not use teon tape with the Watts Adapt-a-Valve.WARNING:
Hot
(Return)
Cold
(Supply)
Conguration for 1/2”
(Without Brass Fittings)
Connect the Green and Black Tubing
Step 13 Locate the 1/4” green tubing attached to the RO system. Insert the open end of the green
1/4” tube into the open 1/4” quick connect tting on the COLD water feed adapta-a-valve
making sure the tube is pushed in all the way to the tube stop. Repeat the procedure to
connect black tubing from the RO module to the hot water, return adapt-a-valve.
Mounting the RO Module
Step 14
Determine the best location for the RO Module to be
mounted and allow for future system maintenance. Use
a Phillips screwdriver and secure the screws 5 3/4” apart
and 16” from the bottom of the cabinet.
Tank Ball Valve Installation - Part#: 134018
Step 15
Step 16
Teon tape must be applied in a clockwise direction. Wrap
(7 to 12 turns) around the male pipe threads (MPT) on the
stainless steel tting on top of the tank.
Thread the quick connect ball valve (supplied in the parts bag)
onto the stainless steel connector on the tank.
Note: Do not over-tighten plastic connections.
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Blue Tube Connection (From The RO Module To TANK)
Step 17
Note: Set the blue ball valve knob in-line with the blue tube, this is the “open” position.
Position tank in desired location. Stand it upright or lay it on
its side (using the black plastic stand). Measure the blue tube
(marked “TANK”) from the RO module to the tank and cut it to
length leaving a straight, square edge. Insert the tube into the
quick connect tting on the tank ball valve. Make sure the tube
is pushed in all the way to the tube stop.
Start up Instructions
Warning: To prevent the possibility of electrical shock, clean up any water on
cabinetooranddryallwaterfromoutsideofROunit.
Step 1 Turn on the incoming hot and cold water angle stop valves.
Turn on the water adapt-a-valves.
Check the system for leaks and tighten ttings as
necessary.
Note: Check daily over the next week to ensure no leaks are present.
Step 2 Plug the (24 volt) transformer power cord connector into the RO
system wire harness connector (labeled transformer.)
Step 3 Plug the transformer into the electrical outlet under the sink.
Step 4 Ensure ball valve on tank is open.
Step 5 Open the RO faucet and leave it open until water begins to drip. Then close the faucet.
The tank will take approximately 4 hours to ll.
Note: If no water comes out of the RO faucet after a few minutes check the power
outlet. It is possible that the power outlet you used for the RO unit is controlled
by the garbage disposal switch. To test - Unplug the garbage disposal and ip
the garbage disposal switch to “on” . If the RO pump turns on and water starts to
drip out of the RO faucet you will need to connect the system to a different power
outlet socket.
Note: Water may be cloudy or milky due to air in the system and carbon particles ushing out
of the nal polishing lter. This condition will resolve itself after ushing a couple of
tanks of water.
Step 6
Thisushingprocedureisonlynecessaryaftertheinitialinstallationandafter
replacing the RO membrane.
After the Tank has lled, open the RO Faucet to ush the tank completely. You will know
that the tank is empty when the ow rate from the RO faucet is down to a trickle. Repeat
this step two more times. The fourth tank can be used for drinking. This process should
take approximately 24 hours to complete.
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