Aquatek ATUN Series Manual

Operation & Maintenance Manual
United Water Inc | 1-877-414-PURE(7873) | www.unitedwaterinc.com | [email protected]
atun1001 | ATUN1501 | ATUN2001

UNITED WATER INC.
AquAtek AtuN-SerieS uSer Guide
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Table of Contents
Introduction 4
About Your ATUN 5
Installation Guide 6
Parts & Components 8
Trouble Shooting Guide 9
Manufacturer’s Limited Warranty 10

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***ATTENTION***
***WARNINGS***
LTo reduce the risk of choking: DO NOT allow children under the age of 3 yearsof age to have access to small parts
during the installation of this product.
LThis system is not intended for use where water is microbiologically unsafe or with water of unknown quality.
LTo reduce the risk of physical injury: Shut off inlet water supply and depressurize system as shown in manual prior to
service.
LRead and follow Use instructions before installation and use of this water treatment system.
LInstallation and use MUST comply with existing state or local plumbing codes. Use flexible tubing connections to
connect the valve to household plumbing
L(as shown in schematic).
LProtect from freezing, relieve pressure and drain system when temperatures are expected to drop below 33°F
(0.6°C).
LDo not install systems in areas where ambient temperatures may go above 110°F (43.3°C).
LDo not install on hot water supply lines. The maximum operating water temperature of this Acid Neutralizer System
is 110°F (43.3°C).
LDo not install if water pressure exceeds 100 psi (689 kPa). If your water pressure exceeds 80 psi (552 kPa), you must
install a pressure limiting valve.
LDo not install where water hammer conditions may occur. If water hammer conditions exist you must install a water
hammer arrester.
LWhere a backflow prevention device is installed on a water system, a device for controlling pressure due to thermal
expansion must be installed.
LDo not use a torch or other high temperature sources near Acid Neutralizer System, cartridges, plastic fittings or
plastic plumbing.
LOn plastic fittings, never use pipe sealant or pipe dope. Use PTFE thread tape only, pipe dope properties may deteri-
orate plastic.
LTake care when using pliers or pipe wrenches to tighten plastic fittings, as damage may occur if over tightening
occurs.
LDo not install in direct sunlight or outdoors.
LMount system in such a position as to prevent it from being struck by other items used in the area of installation.
LEnsure all tubing and fittings are secure and free of leaks.
LSHUT OFF FUEL OR ELECTRIC POWER SUPPLY TO WATER HEATER after water is shut off.
LDo not install system where water lines could be subjected to vacuum conditions without appropriate measures for
vacuum prevention.
LDo not apply heat to any fitting connected to Bypass or Control Valve as damage may result to internal parts or
connecting adapters.
LInstall on a flat/level surface. It is also advisable to sweep the floor to eliminate objects that could pierce the media
tank.
LIf the home electrical system requires use of the cold water system as an electrical safety ground, a jumper must be
used to ensure a sufficient ground connection across the Acid Neutralizer System installation piping — refer installa-
tion to qualified personnel.
Model
Number
Flow Rate
@ 15 psid Pipe Size Electrical
Media Bed
Material
Media Bed
Cu. Ft.
Mineral Tank
Diameter
Mineral
Tank Height
Total Sys-
tem Size (in)
ATUN1001 6 1” NPT Elbow Not req. Calcite 1 9” 48” 12 x 12 x 58
ATUN1501 7.5 1” NPT Elbow Not req. Calcite 1.5 10” 52” 13 x 13 x 62
ATUN2001 9 1” NPT Elbow Not req. Calcite 2 12” 54” 15 x 15 x 64
Specifications
Maximum operating temperature 110°F (43.3°C); Maximum operating pressure 20-100 psi. Specifications
subject to change without notice.
NOTES:
* The lower the pH (acidity) of the water being treated, the greater the attrition rate of the media and the
slower the water should pass through the bed. The unit should be sized according to the level of pH and
existing flow rate.

UNITED WATER INC.
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Please Read Manual First
Before you operate your Aquatek ATUN Upflow Neutralizer, read this manual to become
familiar with the device and its capabilities.
Installation or maintenance done on this system by an untrained service person can
cause major damage to equipment or property damage. Not adhering to the recom-
mended service/maintenance can cause damage to equipment or property damage.
It is important to maintain your system. To properly maintain your system have a water
technician change the filter media when necessary. (Check with your dealer.) If your filter
media is not working properly, or is not replaced frequently enough, it has potential to
grow bacteria that can end up in your water system. A water technician can tell you how
often the filter media needs replacing.
This manual is intended to be a practical reference guide. It contains information about
operating this system—including installation and start-up instruction for the installer and
programming, regenerations, settings and troubleshooting for the homeowner. To de-
termine when to change the filter media, contact your dealer. Every system encounters
different water conditions therefore every filtration system will have different timetables
for replacing the filter media. Make sure you have a water technician change your filter
media and periodically test for effectiveness.
MAINTENANCE AND CARE
It is important to maintain your filter. To properly maintain your system have a water
technician change the filter media when necessary. (Check with your dealer.) If your filter
media is not working properly, or is not replaced frequently enough, it has potential to
grow bacteria that can end up in your water system. A water technician can tell you how
often the filter media needs replacing.
Introduction

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About Your ATUN
How Does my Neutralizer Filter Work?
The low pH (acid) water passes through a special limestone neutralizing
media and slowly dissolves the media raising the pH to approximately 7
units (neutral) or higher. Periodic media replenishment is therefore re-
quired. The frequency and amount of media replenishment depends on
the volume of water used and how acidic the water is before treatment.
The lower the pH (acidity) of the water being treated, the greater the at-
trition rate of the media and the slower the water should pass through the
bed. The unit should be sized according to the level of pH and existing flow
rate. Your dealer can provide an estimate of your replenishment require-
ments.
ATUN Series Upflow Acid Neutralizers virtually eliminate the possibility of
media bed “cementing” because the water to be treated actually “up-
flows” through the neutralizer media bed! This procedure requires NO
electricity or backwashing.
A large fill-port permits easy replenishment of the “sacrificial” neutralizing
media by the homeowner or a service technician.
There are different media types available which can be used in this ATUN
Series Upflow Acid Neutralizer System. Each is designed to improve a par-
ticular aesthetic problem. None of them should be used to make non-po-
table water safe to drink. The following descriptions indicate not only what
the media is designed to do, but also points out their limitations.
Neutralizer Blend
Neutralizer media is typically a blend of calcium carbonate and mag-
nesium oxide. This media is used to elevate the pH of acid water and is
generally used when the pH is approximately 5.5 - 6.0 units. The neutral-
izer media dissolves when water with a low pH passes through. The blend
is used to take advantage of the fast, vigorous pH adjusting capabilities of
magnesium oxide and the slow, long-lasting capabilities of the calcium
carbonate. Neutralizer is typically not recommended when the pH of the
raw water is below 5.5 units, because the dissolve rate would be high and
thus constant maintenance of the ATUN Series Acid Neutralizer System
would be necessary. In these cases contact our Customer Service Depart-
ment at 1-877-414-7873 for recommendations.
***NOTE*** Since the neutralizer media dissolves as it elevates pH level, it will in-
crease the hardness of your water. If your dwelling contains a tankless water heat-
er, a water softener must be installed after the ATUN Series Upflow Acid Neutralizer
System to help prevent the heater coil from plugging with hardness material.
Calcium Carbonate
Calcium carbonate can be used when only a slight pH adjustment is
required (typically 6.0 to 6.8 units). Calcium carbonate is sacrificial (dis-
solves) when adjusting pH and will thus increase hardness as well. Re-
plenishment will be required periodically, once again depending on raw
water pH and water consumption.
***NOTE*** Since both calcium carbonate and magnesium oxide increase hardness of your water,
if your dwelling contains a tankless water heater, it is recommended that a water softener be installed
after the ATUN Series Upflow Acid Neutralizer System to help prevent the heater coil from plugging with
hardness material.

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Installation Guide
Pre-Installation Checklist
1. Installation site is level, clean & cleared of obstuctions.
2. It is recommended* a working pressure reducing valve be installed on the inlet water line that supplies the wa-
ter filter.
3. Note: The warranty is void if the system is exposed to water pressure in excess of 100 psi and/or water tem-
peratures in excess of 110° F
4. Important: Protect your Fitler and the entire drainline from freezing temperatures. The temperature at the loca-
tion of the system should never be below 40° F
WARNING! DANGER: If your unit should freeze, do not attempt
to disassemble it. Call us first 877-414-PURE
Installation
1. Floor Space: Make sure the floor space that has been selected to install the system is clean and on a
level surface. In some cases, your media may be shipped seperatelty. (see next page)
2. Installation Sequence (Fig 1): Refer to Typical Installation Sequence for correct placement of neu-
tralizer in relationship to other water treatment devices. Installa- tion location is critical because it may
change the effectiveness of other products.
3. Leveling the System: Mineral tanks are fitted with an adjustable leveling base, if tank is not vertical/
straight lift tank 1-3 inches off the floor and gently release tank back on to the floor (repeat until stright
up and down).
4. Shut off: Be sure to shut off water at main supply. On a private well system, turn off power to pump
and drain pressure tank. Make certain pressure is re- lieved from complete system by opening nearest
faucet to drain system. Shut off fuel supply to hot water heater.
3. Bypass & Connection Kit: Locate the bypass valve and connect to the head assembly. Assemble
the connection fittings and connect to the bypass valve. Tighten the connection nuts on both the by-
pass and connections fittings by hand only. Closeboth the inlet and outlet valves on the bypass and
leave in closed position until instructed otherwise.
4. Plumbing Preparations: Refer to diagram (Figure 2) for recommended plumbing procedure. Cut
main supply line as required to fit plumbing to the inlet and outlet of neutralizer. Use thread tape on
nipple threads, as most pipe thread pastes will cause deterio- ration of plastic fittings. Hold nipples
with wrench while attaching plumbing. DO NOT OVERTIGHTEN. If a boiler drain (not supplied) is to be
connected, be sure to install it on the outlet side of the ATUN Series Upflow Acid Neutralizer System.
Note: All plumbing should be done in accordance with local plumbing codes.

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Installation CONT.
5. Filling: After completion of plumbing connections, remove fill-port cap using wrench provided and
pour neutralizer media into mineral tank using funnel provided (see below). DO NOT fill tank above the
line on the side of the media tank.
Overfilling the tank can result in neutralizer media entering the service lines. You may
have been provide more media than is required for the initial fill. Save this extra media
for future replenishment.
Open inlet valve and then turn water supply back on. Using a garden hose or bucket, fill unit with water
through fill-port. Replace fill-port cap.
6. Flush: Attach a garden hose to boiler drain (if installed) on outlet of the ATUN Series Upflow Acid
Neutralizer System. Discharge of hose should be into a bucket or drain. Open boiler drain and slowly
open inlet valve to flush the ATUN Series Upflow Acid Neutralizer System. Discharge water from hose will
be milky white due to fines generated during shipping and handling. Very fine particles of neutralizer
media may also be observed in the water. If “sand” like particles are observed, reduce flush flow rate
and then gradually increase. Continue to flush until discharge water runs clear. Upon completion of
flushing, close boiler drain and bypass valve and open outlet valve
7. IMPORTANT: If the home utilizes a tankless water heater, it is recommended that a water softener be
installed following the the ATUN Series Upflow Acid Neutralizer System. If the pH is initially over correct-
ed, the inlet bypass can be partially closed to mix untreated water with treated water to achieve the
desired level.
***Disclaimer*** United Water strongly recommends that each system be installed by a
licensed and knowledgeable professional. Failure to do so could result in property dam-
age, equipment failure and potentially void warranty.
All systems MUST be installed in accordance with local and state plumbing codes.
Mainternance & Replenishing/Filling MEDIA:
The media in this the ATUN Series Upflow Acid Neutralizer System
is sacrificial, therefore it must be replenished periodically. The
frequency is dependent on the raw water pH and your water
consumption habits. The lower the pH and the higher the water
usage, the more frequently replenishment will be required. One
easy way of determining when to replenish is by placing a mark
on the outside of the tank at the level of the media when first
installed. Periodically shine a bright light through the tank and
compare the current level to the mark, if it is down more than
two (2) inches, add media to the mark. If you are unable to see
through the tank, remove the fill-port cap and measure down
to the top of the media. The tank should be 2/3 full. If not, add
media.
1) Close inlet and outlet valves. Open bypass valve so untreated
water can still be used during the replenishment operation.
2) Open boiler drain to relieve pressure. Remove fill-port cap
using wrench provided, some water will drain out of the fill-port
opening. Use a flexible tube to siphon approximately two gallons
of water from the tank.
3) Using the funnel provided, add the required amount of me-
dia, not to exceed the indicated line on the media tank. A bright
light may be placed behind the tank to observe the media level.
4) Refer to Steps 8-9 in Section 2 for flushing instructions to
complete the replenishment operation.

UNITED WATER INC.
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Parts & Components
Drawing
Number Part Number Description Qty.
1CUFH-1190-FP Upflow Head w/Fill-Port 1
2
AT-0948-N ATUN1001 Mineral Tank 1
AT-1252-N ATUN1501 Mineral Tank 1
AT-1252-N ATUN2001 Mineral Tank 1
3DT-65 Upflow Distributor Tube 1
4MCPC-45-B Media, Calcium carbonate 1
5
MGV20-12 ATUN1001 Gravel 1 cu ft Sys 1
MGV20-15 ATUN1501 Gravel 1.5 cu ft Sys 1
MGV20-25 ATUN2001 Gravel 2 cu ft Sys 1
6F-25 Fill Funnel 1
Drawing
Number Part Number Description Qty.
n/a V3006 Bypass Assembly (complete) 1
n/a V3007-16 1” Male NPT Elbow (connection kit) 1
n/a V3193-02 Wrench 1
1 V3151 1” Nut 2
2 V3150 Split Ring 2
3 V3105 O-Ring 2
4 V3145 1” Bypass Rotor 2
5 V3146 Bypass Cap 2
6 V3147 Bypass Handle 2
7 V3148 Bypass Rotor Seal Retainer 2
8 V3152 Bypass Cap O-Ring 2
9 V3155 Bypass Handle O-Ring 2
10 V3156 Bypass Rotor O-Ring 2
Bypass Assembly & Misc

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Trouble Shooting Guide
Problem Solution
Neutralizer overcorrects upon installa-
tion or after replenishment
The inlet bypass can be partially closed to allow untreated
and treated water to mix to obtain desired pH level. Periodi-
cally test treated water pH and open bypass valve when pH
begins to drop.
Neutralizer fails to increase pH upon
installation
Make sure bypass valve is closed.
Test water or have it tested via third party. If high hardness or
total dissolved sol-
ids (TDS), seek alternate means of treatment such as feeding
a solution of soda ash or caustic soda.
Neutralizer fails to increase pH after
being in service. Check filter bed for cementing or channeling. Break channel- ing or cementing with stiff rod or tubing.
Excessive pressure drop. Check untreated water for sediment, silt or sand. Install sand
trap or multiple cartridge filter prior to neutralizer.
IMPORTANT SERVICING NOTE:
Under normal circumstances removal of the fill-port head assembly should not be re-
quired. However, if it must be re- moved, disconnect the plumbing attached to the bypass
valve first. Then, rotate the fill-port head assembly to the left or counter-clockwise. Before
attempting any disassembly, pressure should be relieved by shutting off water to the sys-
tem and opening a faucet. Upon reassembly, all o-rings should be lubricated with silicone
grease. Reattach fill-port head assembly by rotating to the right or clockwise until fill-port
head assembly is seated to the tank hand tight. Reconnect the plumbing to the bypass
valve.

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Manufacturer’s Limited Warranty
The manufacturer warrants to the original owner that its Water Conditioning Equipment
will be free from defects in material and workmanship under normal use and service for
a period of five (5) years from the date of installation, when installed and operated with-
in recommended parameters. No warranty is made with respect to defects not reported
to Manufacturer within the warranty period and/or defects or damages due to neglect,
misuse, alterations, accident, misapplication, physical damage, or damage caused by
fire, floods, acts of God, freezing or hot water or similar causes. Manufacturer’s obligation
to the owner of this equipment under this Limited Warranty shall be limited, at its option,
to replacement or repair of this Water Conditioning Equipment.
To obtain warranty service mail or ship the defective parts freight prepaid to the Manu-
facturer’s place of business. Manufacturer will, at its option, repair or replace the defective
components at its expense and return parts freight collect.
Manufacturer gives this warranty to the owner in lieu of all other warranties, express or
implied, including without limitation any implied warranties of merchantability or fitness
for a particular purpose and hereby expressly disclaims all other such warranties. Man-
ufacturer’s liability hereunder shall not exceed the cost of the product. Under no circum-
stances will Manufacturer be liable for any incidental or consequential damages or for
any other loss, damage or expense of any kind, including loss of profits, arising in connec-
tion with the installation or use or inability to use this product.
To obtain warranty service contact:
United Water
12427 NE 117th Ave Suite 105
Vancouver WA 98662
877-414-7873
[email protected]
www.unitedwaterinc.com