Watts Premier 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
Watts Premier, Inc. 1725 W. Williams Dr. C-20 Phoenix, AZ 85027
#199229 Phone: [phone] Manual Date: 05/14/10
System Tested and certified by NSF
International against NSF/ANSI Standard
58 for the reduction of the claims specied
on the performance data sheet.
System Tested and certified by WQA
against NSF/ANSI Standard 58 for the
reduction of the claims specied 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.

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 623-931-1977).
Table of Contents
Operational Parameters ........................................................................................................................ 4
Contents of Reverse Osmosis System .................................................................................................. 4
Tools Recommended For Installation .................................................................................................... 4
Installation of Faucet ............................................................................................................................. 5
Installation of hot and cold supply valves .............................................................................................. 6
Mounting RO Module............................................................................................................................. 7
Connecting to the faucet........................................................................................................................ 7
Connect hot and cold water supply valves .......................................................................................... 7
Tank Tee Installation .............................................................................................................................. 8
Connecting the 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
3
** Before installation, please take a moment to ll out the warranty card on page 21-22.

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 Teon 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
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
Tools recommended for installation
4
* Note: RO unit must be installed a minimum of 25 Pipe feet from water heater *
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.
Do not use with water that is microbiologically unsafe or of unknown quality, without adequate
disinfection before or after the system.
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.
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.
Operational Parameters
Operating Temperatures: Maximum 100°F (37.8°C) Minimum 40°F (4.4°C)
Operating Pressure: Maximum 85 psi (6.0 kg/cm
2
) Minimum 40 psi (2.80 kg/cm
2
)
pH Parameters: Maximum 11 Minimum 2
Iron: Maximum 0.2 ppm
TDS (Total Dissolved Solids) < 1800 ppm
Turbidity < 5 NTU

Caution: Porcelain sink surface material is extremely hard and may crack or chip. Use extreme
caution when drilling. Watts recommends the use of a professional for this, and accepts no
responsibility for damage resulting from the installation of the faucet.
Step 1 Determine desired location to drill a hole for the faucet on your sink.
Step 2 Using a variable speed drill on the slowest speed, drill a 7/16” hole for the
faucet. Use water to keep the drill bit cool while drilling. (If the drill bit gets hot
it may cause the porcelain to crack or chip).
Installation of Faucet
Step 4 Insert the faucet shank through the hole in sink and let it rest on the sink top.
Step 3 Place the escutcheon chrome plate and the black rubber washer on the faucet shank.
(Parts found in faucet parts bag).
5
Step 5 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.
Plastic

Hand tighten brass adapters then apply 1/4 turn with a wrench.
RO Tubes will be connected on page 7
Step 6 Turn off the hot and cold water supply to the faucet by turning the angle stop valves off.
Step 7 Remove water supply line at faucet to the angle stop valves.
Step 8 Attach the water supply line valves as illustrated in the drawings above.
Step 9 Re-attach the water supply line to the ttings attached to the angle stop valves.
Installation of hot and cold water supply line valves
6
Conguration for 3/8”
compression ttings
Conguration for 1/2”
compression ttings
Hot
Supply
Cold
Supply

7
Step 11 Connect blue tube from the in-line lter over to the faucet
shank. Place the brass nut onto the tube, followed by the
plastic sleeve (tapered end pointing to the end of tube)
and then place the plastic insert into the end of the tube.
Step 12 Insert the blue tube into the end of the faucet shank and
use a wrench to tighten the brass nut securely.
Mounting the RO module
Step 10 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.
Note: There will be (2) Blue, (1) Green and (1) Black
tubes coming from the module. Do not cut these tubes
at this time.
Connecting to the faucet
Connect the hot and cold water supply line valves
Insert the Green tube into the Cold water needle valve tting
1/4” tube compression tting until it stops. Slide the Nut and
Plastic Sleeve down to where you can thread them onto the male
pipe threads. Use a 1/2” wrench to securely tighten.
Insert the Black tube into the Hot water needle valve tting
1/4” tube compression tting until it stops. Slide the Nut and
the Plastic Sleeve down to where you can thread them onto the
male pipe threads. Use a 1/2” wrench to securely tighten.
Step 13
Step 14
Remove a brass nut, plastic sleeve and brass insert from the
parts bag. To assemble, place the brass nut on the 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)
Assemble the Black and Green tube connections:
Teon 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.
Tank Ball Valve Installation - Part#: 134018
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.
Step 15
Step 16

8
Blue Tube Connection (From The RO Module To TANK)
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 (see page 9 for quick
connect tting use directions).
Step 17
Note: Set the blue ball valve knob in-line with the blue tube, this is the “open” position.
Start up Instructions
Step 1 Turn on the incoming hot and cold water angle stop valves.
Turn on the water line needle valves by turning counter
clock-wise. 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.
Step 6 After the tank has lled once, open the RO faucet and drain the tank.
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 7 Complete step #6 two more times. This process should take about one day to
complete. The fourth tank can be used for drinking water.
This ushing procedure is only necessary after the initial installation and after
replacing the RO membrane.
Warning: To prevent the possibility of electrical shock, clean up any water on
cabinet oor and dry all water from outside of RO unit.

9
sediment
carbon block
Loosen
6 Month System Maintenance - Filter Kit #560038
Step 1
Items needed:
√ Stage 1 - Sediment Filter (part #: 104017)
√ Stage 2 - Carbon Block Filter (part #: 101009-White End Caps)
Note: The lter wrench pictured (Part # 164003) may be purchased from Watts Premier to aid with
twisting off lter housings but is not required.
Turn off the incoming water supply to the RO by turning the needle valve on the cold water
adapt-a-valve clockwise until it stops and unplug the power transformer from the electrical outlet.
Close the ball valve on the RO storage tank and open the RO Faucet.
Step 2
For more leverage you may leave the RO module attached to wall of
cabinet. If you are unable to access the module while it is mounted,
remove it prior to changing lters. Starting with the closest housing
(Stage 1), remove it by turning it clockwise (left), empty water, then
discard lter and repeat for the 2nd housing (Stage 2).
Step 4
Clean the lter housings (bowls) with a mild soap solution and rinse
with water. Check O-rings and lubricate with water soluble lubricant.
KY Jelly® or other water based lubricants may be used. Petroleum
based lubricants (such as Vaseline®) must not be used.
Step 5
Before re-installing the lter bowls back on to the system, check
O-rings to make sure they are still in place. *
Caution:
Insert a new sediment lter (cloth like appearance) into the 1st lter
housing which is the one on the water inlet side (green tubing from
the adapt-a-valve) of the RO system and re-install housing.
Step 6
Insert the new Carbon Block lter (White end caps & plastic netting)
into the second lter bowl and re-install housing.
Step 7
Step 8 Plug the power transformer back into the electric outlet and turn water supply on to the unit
by turning the needle valve on the adapt-a-valve counter clock wise.
Step 9 Close the RO faucet and open the ball valve on the RO storage tank. Your system is ready
for use.
*Order lters by calling 1-800-752-5582 or buy online at www.wattspremier.com.
*
Warning: To prevent the possibility of electrical shock, clean
up any water on cabinet oor and dry all water from outside of RO unit.

10
Remove the nal lter from the two clips. Remove the white nuts from both ends of the lter.
Remove the connectors from both ends (keep and reuse). Discard the old nal lter and
replace with new lter reusing the connectors .
Note: Flow arrow on nal lter must be pointing in the direction of water ow to the RO faucet.
Step 11 Follow Start Up procedure on page 8. You will need to ush a half a gallon of water
before using the RO water .
Step 1
Note: Sanitizing of unit is recommended.
Perform steps 1 through 5 in the Six Month System Maintenance (Page 9).
Note: If not sanitizing the system skip to step 8.
Step 3
Step 4
Step 5
Step 6
Remove the RO membrane from its housing and rest in a clean sanitary place. (Refer to
“Membrane Replacement” section on page 11 for directions on removing the membrane).
Replace cap onto empty membrane housing and re-connect green tubing.
Step 2
Leaving the lters out, replace stage 2 empty lter housing (hand tight) onto unit. Measure
& pour either 1/2 cup of hydrogen peroxide or common household bleach into the 1st lter
housing (Stage 1) and hand tighten onto unit. Ball valve on RO tank should be open.
With the RO faucet in the closed position turn on the incoming water supply to the system
by turning the adapt-a-valve counter clockwise. Plug in the power transformer back into the
electrical outlet. Wait 1 minute for the unit to pressurize. Turn on the RO faucet and let the
water run for 30 seconds. Turn off the RO faucet and let the unit rest for 2 minutes. Finally,
open the RO faucet and let the water run for 5 more minutes.
Unplug the Power Transformer. Turn off the incoming water supply to the system by turning
the adapt-a-valve clockwise until it stops. Keep the RO faucet open until the storage tank
is completely drained.
Open the membrane housing and re-install the RO membrane while making sure not to kink
the O-rings. (Refer to “Membrane Replacement” section on page 11 for directions on
installing the membrane). Tighten the cap back on the housing and reconnect green tubing.
Step 7 Remove lter housings Stage 1 and 2 and empty of water.
Annual Maintenance - Filter Kit #560032
Before re-installing the lter bowls back on to the system , check O-rings to make sure
they are still in place and lubricate with water soluble lubricant.
Caution:
Insert the new sediment lter (cloth like appearance) into the 1st lter housing which is the one
on the water inlet side (green tubing from the adapt-a-valve) of the RO system and
re-install housing.
Step 8
Insert the new Carbon Block lter (White End Caps) into the 2nd housing and re-install
housing.
Step 9
Step 10
Tip: This is a good time to check the air pressure in your storage tank. For instructions
please see page 12.
√ Stage 1 - Sediment Filter (part #: 104017)
√ Stage 2 - Carbon Block Filter (part #: 101009-White end caps)
√ Stage 4 - 10” Final Polishing lter (part # 560010)
√ 1/2 Cup of hydrogen peroxide or common household bleach - not included in lter kit.
Items needed:

11
RO Membranes have a life expectancy between 2 and 5 years, depending on the incoming water
conditions and the amount the RO system is used. This reverse osmosis membrane is critical for
effective reduction of total dissolved solids (TDS). The product water should be tested periodically to
verify that the system is performing satisfactorily.
Normally, a membrane would be replaced during a semiannual or annual lter change. However, if at
any time you notice a reduction in water production or an unpleasant taste in the reverse osmosis
water, it could be time to replace the membrane. Watts Premier recommends replacing the
membrane when TDS reduction falls below 75%.
A water sample may be sent to Watts Premier for a free diagnosis of your membrane
performance. To send a water sample, use two (2) clean containers and ll ½ cup of tap water in
one container and ½ cup of reverse osmosis water in 2nd container. Clearly label each sample.
Send the samples to the address listed on the cover of this manual attention “Water Samples”.
Watts Premier will test the water and mail or call you with the results.
Your reverse osmosis system contains replaceable treatment components that are critical for effective
contaminant reduction. Periodic inspection and following proper system maintenance is critical for
continued performance.
Loosen
Membrane Maintenance
Use a 5/8” wrench to remove the Green Tube tting on the left side
of the horizontal membrane housing (end with one elbow).
Step 1
Step 2
Step 3
Step 4
Step 5
Note:
Step 1 Turn off the incoming water supply to the RO by turning the needle
valve on the adapt-a-valves clockwise until it stops and unplug the
power transformer..
Open the RO Faucet and allow water to drain from the tank until it
is completely empty.
Step 2
Removing the membrane:
Installing the membrane:
Follow the Start Up Instructions on page 8.
Remove the cap from the membrane housing by turning it counter
clockwise to loosen.
A double sided wrench may be purchased from Premier to aid with
loosening the cap / lter housings. (Part # 164003)
Remove membrane housing from the holding clips. Using a pair of
pliers, grip the PVC tube of the RO membrane and pull rmly on the
membrane to remove from the housing and discard.
Lubricate the O-rings on the new membrane with a water soluble
lubricant such as KY Jelly ®. Insert the end with the two black
O-rings rst into the housing.
Once membrane has been inserted into the housing you must take
your thumbs and give a rm push to properly seat the membrane.
Replace membrane housing cap and tighten.
After replacing membrane housing into clips, attach the green tube
to the elbow on cap using 5/8” wrench.
Step 6
Step 7

Trouble shooting
Problem Cause Solution
Low/slow production Excessive air pressure in tank Relieve pressure at schrader valve on tank (set
to 7 psi with the tank empty)
Pump not operating Wiring connection broken (plug 110 AC wall
plug back in at wall and/or reconnect the 24
VAC wire harness connectors)
Replace pump if needed
Fouled membrane Replace membrane
Plugged pre-lters Replace lters
Crimped tubing Check tubes to make sure they are not kinked
Angle stop or water line valve Ensure valves are opened by turning valve
not fully opened handle counter clockwise until it stops
Milky colored water Air in the system Air in the system is a normal occurrence with
initial start up of the RO system. This milky look
will disappear during normal use within 1-2
weeks. If condition reoccurs after lter changes,
drain tank 1 to 2 times.
Faucet Dripping Needs adjustment see page 12
Pump short cycles Ball valve on tank closed Open the ball valve on the top of the tank
Blue tube blocked between Remove kinked/damaged section and replace if
the tank and RO system necessary
Faulty pressure switch Call for technical support
Bowl leaks at the top after Damaged/Dry O-ring Lubricate with water soluble lubricant or replace
changing the lters O-ring as necessary (Do not use Vaseline or
other petroleum based lubricants)
Pump constantly running Electrical fault Call for technical support
Faucet left on Close faucet and let tank ll for 2 to 3 hours
Plugged pre-lters Replace lters
12
Once all water in the tank is purged, check air pressure using an air pressure gauge, it
should read between 5 - 7 PSI. (Digital air pressure gauge is recommended)
Check Air Pressure in the Tank
Important:
Step 3
Check air pressure only when tank is empty of water!
Step 1 Turn off the incoming water supply to the RO by turning the needle
valve on the adapt-a-valve clockwise until it stops. (Follow the green
tube away from the RO system to nd the adapt-a-valve.)
Open the RO Faucet and allow water to drain from the tank until it is
completely empty.
Step 2
Check air pressure in the storage tank when you notice a decrease in available water from
the RO system. Air can be added with a bicycle pump using the schrader valve that is
located on the lower side of the tank behind a blue plastic cap.
Tip: When water from the RO faucet slows to a trickle, with the faucet still in the open
position, you may add air to the tank to purge any left over water, this will ensure that
the tank is completely empty.

Adjust Faucet
If the faucet has developed a drip it can be corrected by following the steps outlined below.
Step 1 Remove faucet Spout rst. Position both thumbs on the
back edge of the lever and push forward.
Step 2 Lever will slide forward and completely off of the faucet base.
Step 3 Small brass tee can be turned 1/2 turn, counterclockwise, to adjust
the tension on the black lever. This adjustment may be necessary
to stop slow drips from tip of faucet. You may need to repeat the
process until the faucet does not drip. Brass tee must always end
up facing across body of faucet in order to slide black lever on.
13

RECOMMENDED REPLACEMENT PARTS AND CHANGE INTERVALS:
Depending on incoming feed water conditions replacement time frame may vary.
Change Time Description
6 months: Sediment Pre-lter (5M-10); Carbon Pre-lters (5M-CTG)
12 months Final Carbon lter (1M-10)
This system has been tested according to NSF/ANSI 58 for reduction of the substances below. The concentration of the indicated substances in
water entering the system was reduced to a concentration less than or equal to the permissible limit for water leaving the system as specied in
NSF/ANSI 58. This system has been tested for the treatment of water containing pentavalent arsenic (also known as As (V), As (+5), or arsenate)
at concentrations of 0.30 mg/L or less. This system reduces pentavalent arsenic, but may not remove other forms of arsenic. This system is to
be used on water supplies containing a detectable free chlorine residual at the system inlet or on water supplies that have been demonstrated to
contain only pentavalent arsenic. Treatment with chloramine (combined chlorine) is not sufcient to ensure complete conversion of trivalent arsenic
to pentavalent arsenic. Please see the Arsenic Facts section of the installation manual for further information.
Avg. In. Avg. Eff. % Reduction pH Pressure Max Eff. Inf. challenge Max Allowable
concentration concentration
mg/L mg/L
Arsenic (Pentavalent) 334.615 ug/L 5.0385 ug/L 98.4% 50psi 19 ug/L 0.30±10% 0.010
Barium Reduction 10.2 mg/L 0.207 mg/L 97.9% 7.24 50psi 0.3 mg/L 10.0±10% 2.0
Cadmium Reduction 0.036 mg/L 0.0005 mg/L 98.6% 7.49 50psi 0.0007 0.3±10% 0005
Chromium (Hexavalent) 0.15 mg/L 0.013 mg/L 91.3% 7.24 50psi 0.03 0.3±10% 0.1
Chromium (Trivalent) 0.17 mg/L .01 mg/L 94.1% 7.24 50psi 0.01 0.03±10% 0.1
Copper Reduction 3.1 mg/L 0.03 mg/L 99.0% 7.64 50psi 0.04 3.0±10% 1.3
Cysts 222,077#/ml 10 #/ml 99.99% 58 minimum 50,000/mL
Fluoride Reduction 8.0 mg/L 0.5 mg/L 93.9% 7.49 50psi 0.7 8.0±10% 1.5
Lead Reduction 0.15 mg/L 0.002 mg/L 98.6% 7.49 50psi 0.003 0.15±10% 0.010
Perchlorate 0.10 mg/L 0.003 mg/L 96.5% 7.39 50 psi 0.005 mg/L 0.10±10% 0.006
Radium 226/228 25 pCi/L 5 pCi/L 80.0% 7.24 50psi 5 pCi/L 25pCiL±10% 5 pCi/L
Selenium 0.10 0.008 92.0% 50psi 0.011 0.10±10% 0.05
TDS 752 27 96.4% 7.84 50psi 34 mg/L 750±40mg/L 187
Turbidity 10.2 mg/L 0.26 mg/L 97.5% 0.83 11±1 NTU 0.5 NTU
RECOVERY - 16.75% GALLONS - 24.8 GPD EFFICIENCY - 12.0%
Efciency rating means the percentage of the inuent water to the system that is available to the user as reverse osmosis treated water under operating
conditions that approximate typical daily usage. Recovery rating means the percentage of the inuent water to the membrane portion of the system that
is available to the user as reverse osmosis treated water when the system is operated without a storage tank or when the storage tank is bypassed.
There is an average of 4 gallons of reject water for every 1 gallon of product water produced. Testing performed under standard laboratory conditions,
actual performance may vary. Refer to owners manual for further maintenance requirements and warranty information.
Phone: [phone] Fax: [phone] Email: [email protected]
GENERAL USE CONDITIONS:
1. System to be used with municipal or well water sources treated and tested on regular basis to insure bacteriological safe quality. Do not use
with water that is microbiologically unsafe or unknown quality without adequate disinfection before and after the system. Systems certied for cyst
reduction may be used on disinfected water that may contain lterable cysts.
2. Operating Temperature: Maximum: 100°F (40.5°C) Minimum: 40° (4.4°)
3. Operating Water Pressure: Maximum: 100 psi (7.0kg/cm2) Minimum: 40 psi (2.8kg/cm2)
4. pH 2 to 11
5. Hardness of more than 10 grains per gallon (170 ppm) may reduce TFM membrane life expectancy.
6. Recommend TDS (Total Dissolved Solids) not to exceed 1800 ppm.
Watts Premier Inc.
1725 W. Williams Drive C-20
Phoenix, AZ 85027 USA
[phone] [email protected]
PerformanceData Sheet
ZRO-4 Zero Waste RO
14
3 to 5 years R.O. Membrane (TFM-25)

Arsenic Fact Sheet
Arsenic (As) is a naturally occurring contaminant found in many ground waters. Arsenic
in water has no color, taste or odor. It must be measured by an arsenic test kit or lab test.
Public water utilities must have their water tested for arsenic. You can obtain the results
from your water utility contained with in your consumer condence report. If you have
your own well, you will need to have the water evaluated. The local health department
or the state environmental health agency can provide a list of test kits or certied labs.
There are two forms of arsenic: pentavalent arsenic (also called As (V), As (+5))and
trivalent arsenic (also called As (III), As (+3)). In non chlorinated well water, arsenic may
be pentavalent, trivalent, or a combination of both.
RO systems are very effective at removing pentavalent arsenic. A free chlorine residual
will rapidly convert trivalent arsenic to pentavalent arsenic. Other water treatment
chemicals such as ozone and potassium permanganate will also change trivalent arsenic
to pentavalent arsenic. A combined chlorine residual (also called chloramine) may not
convert all the trivalent arsenic. If you get your water from a public water utility, contact
the utility to nd out if free chlorine or combined chlorine is used in the water system.
This Watts Premier reverse osmosis system is designed to remove pentavalent arsenic. It
will not convert trivalent arsenic to pentavalent arsenic. Under laboratory standard testing
conditions, this system reduced 0.30 mg/L (ppm) pentavalent arsenic to under 0.010
mg/L (ppm) (the USEPA standard for drinking water). Actual performance of the system
may vary depending on specic water quality conditions at the consumer’s installation.
The RO component of this Watts Premier reverse osmosis system must be maintained
in order to ensure proper contaminant removal from your water. As detailed out on Page
2 of this manual, prelters should be replaced every six months, the post lter once a
year, and the RO element with in two to ve years. Specic component identication
and ordering information can be found in the installation/operation manual maintenance
section, by phone at 1-800-752-5582 or on-line www.wattspremier.com.
15

16

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Item # Part # Description
26 137013 BRACKET-4SV-STEEL WHITE
27 146001 SCREW- #10-3/4” PHIL PAN HEAD
28 146004 SCREW- #10-1” PHIL PAN HEAD
29 164006 CLIP-MTG-MEM-VESSEL
30 337002 BRACKET 16 GAUGE CRS
31 113007 LID-WHITE 1/4” FPT UNA
32 131021 HEX NIPPLE-BR-1/4 HEAVY DTY
33 125088 ELB-90 - 1/4 X 1/8 M - WHITE
34 152035 SOLENOID VALVE ELEC
35 125089 ELB-90- 1/4 X 1/4 INSERT
36 152008 PUMP BOOSTER
37 152044 WIRE HARNESS FOR ESO
38 113029 O-RING FILTER HOUSING
39 104017 SED-SPUN 10” CTG
40 101009 CARBON BLOCK 10” 5 MIC
41 113024 HOUSING FILTER 10” WHITE
42 252004 TRANSFORMER
43 146024 SCREW 8/32 X 1/4 PAN HEAD
44 610115 BLACK TUBING 1/4 X 3-1/2
45 610117 BLACK TUBING 1/4 X 4”
46 610113 BLUE TUBING 1/4 X 4”
47 610109 GREEN TUBING 1/4 X 4”
Item # Part # Description
1 116023 FAUCET-AG-CHROME
2 134018 VALVE-BALL-PLAS-ELB
4 119007 TANK PRESS 3 GAL WHITE
5 119028 TANK STAND
6 125017 CON-PL-1/4C X 1/4M
7 100017 GAC-IL-10” 1/4F
8 125064 TEE MALE RUN 1/4 X 1/4 M
9 152032 SWITCH PRESSURE 60 PSI TSO
10 164010 CLIP-DOUBLE-MEM TO IL
11 610019 VALVE-CHECK QUICK CON
14 125031 ELB-PL-1/4CX1/8M-90
15 125038 O-RING SET FOR VESSEL
16 110005 MEM-TFM-25 GPD-DRY
17 113038 O-RING SET FOR VESSEL
18 113032 VESSEL-MEM-HOUSING-RES
19 134011 VALVE-CHECK-PLA-ELBOW1/4CX1/8M
20 146032 NUT- 8/32 STEEL
21 131012 DELRIN SLEEVE - PLASTIC
22 131017 INSERT
23 146025 ADAPTA VALVE WASHER
24 134007 VALVE-ADAPTA VALVE
25 125034 ELB-PL-1/4C X 1/4M-90

18
Watts Premier has other ne water ltration products and accessories to enhance your water and to
compliment your existing RO System. Listed on the next several pages are only a few of the items we
offer. Visit our web site at www.wattspremier.com or call our Customer Service Representatives at
1-800-752-5582 (inside USA) 1-623-931-1977 (outside USA) for more products.
Top Mount Faucets by Watts Premier
These attractively designed faucets feature a long reach spout to compliment
all styles of kitchen decor. The unique top mount design allows for easy above
counter installation. The Monitored version of this faucet has an LED light that
turns red to notify you for lter replacement.
Part No. 116091 - Chrome (Non-Monitored)
116095 - Brushed Nickel (Non-Monitored)
116094 - Chrome (Monitored)
116093 - Brushed Nickel (Monitored)
Other Products from Watts Premier
Watts Premier offers a lter change kit which includes all replacement lters needed.
Call 1-800-752-5582 or buy on-line at www.wattspremier.com.
1/4 inch connection kit includes 30 feet of 3/8” tubing, ball valve, and ttings.
Part No. 500010
Watts Premier Hot Water Recirculation System
Bring convenience and saving to your home, giving you hot water instantly at
every faucet, when you need it. This unique product is easy to install and not
only provides you with the convenience of hot water when you need it, but
saves an average of over 15,000 gallons per year.
Part No. 500800
Ice Maker Installation Kit
Tank Ball Valve
Eliminates the need to drain the tank during normal lter changes. This
easy to install valve attaches to the top of your water tank. The tank
should always be drained after the membrane is changed.
Part No. 134023

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Whole House High Performance Water Pressure Regulator
Provides water pressure control solutions for residential, commercial, and indus-
trial applications. Offers durability and years of continuous trouble free operation.
Part No. 107001
Water Pressure Gauge
This gauge mounts onto your outside hose connection to accurately show your
home’s water pressure up to 300 psi. A red needle shows peak overnight
pressure, which may exceed readings during the day. High pressure readings may
indicate the need for pressure regulator to prevent damage to appliances.
Part No. 261003
Replacement Filter Kit
Compatible with Watts Premier Zero Waste Reverse Osmosis system. These
lters provide an extra level of ltration by allowing for more contact between
the carbon media and your water. Includes a 10” Final in-line Filter, Sediment
Filter and a Carbon Block Filter.
Part No. 560032
Using only the available energy from the brine water (otherwise lost to the
drain), the pump forces product water into the storage tank. This process
effectively reduces membrane back pressure to less than 5 psi and allows the
membrane to maximize its use of the available feed pressure.
PERMEATE PUMP KIT - For Standard RO Systems (Non Zero Waste)
Part No. 560041
· Fills product tank up to 4 times more rapidly · Reduces waste water by as much as 80%
· Lowers “TDS creep” · NSF approved (Standard 58)
Pocket Total Dissolved Solids (TDS) Monitor
Test water electronically to verify reverse osmosis membrane effectiveness.
Carrying case included.
Part No. 273001
Whole House Filter
Great for sediment problems such as in well water supply or areas where dirt
and rust particles are a problem. Includes three 50 micron sediment lters and
wrench (3/4” ports)
Part No. 500223
Replacement lter
Part No. 304007

Removing chlorine from your shower
Deluxe Shower Handle with Built in Filter Replacement lters 2PK
5-Way Massaging Spray
72” Reinforced Hose
High Strength Bracket
Triple Plated Finish
Reversible Filter Cartridge (Model HHC)
Cartridge Life Rating: 3 months
Part No. 107070 WHITE
Part No. 107091 CHROME
Part No. 107092 GOLD
Shower Falls Deluxe Shower Handle with Built in Filter
Curved Ergonomic Shower Handle Replacement lters 2PK
Filter Handle Extension
Dual Swivel Adjustment
Ultra Deluxe 5 Way Massaging Spray
72” Reinforced Hose
Chrome Plated Brass Bracket & Swivel Ball Extension
Triple Plated Finish
Reversible Filter Cartridge (Model HHC)
Cartridge Life Rating: 3 months
Part No. 107095 CHROME
All-In-One reversible High-Flow Filter Replacement lter
Deluxe 5-Way Massaging Spray
Soft-Touch Adjustment Pads
Anti-Scaling Spray Nozzle
High Strength Housing
Triple Plated Finish
Cartridge Life Rating: 6 months
Part No. 107098 White/Chrome Part No. 107080
√ Free Chlorine (CL-)
√ Combined Chlorine (Sodium Hypochlorite)
√ Hydrogen Sulde (Rotten egg smell)
√ Plus, its pH balanced.
Special Chlorgon & KDF media – More effective then carbon medias with
hot water applications in the removal of the following.
√ Iron oxide (rust water)
√ Dirt, sediment
√ Odors
Part No. 107075
Part No. 107075
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