NuvoH2O Home System User manual

HOME DUO
WATER FILTER +
TASTE
INSTALLATION MANUAL

Welcome to the
NuvoH2O Family
of Whole-Home
Water Softener
Systems
What to Expect From Your
Home Duo System
877-688-6426
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Congratulations on your purchase of the
NuvoH2O Home Duo System. A premium
carbon filter improves your water’s taste.
And, instead of using salt or potassium to
soften your home’s water, NuvoH2O uses
CitraCharge–a proprietary, natural citrus
formulation to soften and condition your
home’s water. Initially developed for the
food service industry in the early 1980s,
this technology has been solving complex
water problems for some of the nation’s
largest businesses.
You are about to enjoy healthier, better-
tasting and softer water that prevents and
removes hard water buildup that clogs
and corrodes water heaters, appliances,
and plumbing fixtures–each critical to
your home and expensive to replace.
The Home Duo System softens and
improves your water’s taste. It prevents
hard water buildup by binding naturally
occurring minerals without removing
them. Your naturally mineralized water is
healthy, which will not be affected by the
NuvoH2O softening process.
NuvoH2O-softened water requires less
soap in your dishwasher and when doing
laundry. In fact, you can decrease up to
half the amount of detergent for both.
Avoid using pre-soaks or rinse-aids since
too much of either can actually cause a
fine white film or spots to form on dishes.
This spotting can also be aggravated by
some of the non-phosphate detergents
found in many states.
The Home Duo System creates natural,
pH-balanced water that is healthier for hair
and skin. The softened, mineralized water
will not produce that slick, can’t-rinse-off-
the-soap feeling you may have experienced
in the shower when using an old-fashioned
salt softener.
Home Duo System

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Simple & Effective
Package Contents
System Maintenance
The NuvoH2O Duo Systems are the most
simple and effective softeners available.
They require no drains, no electricity,
no calibration, and little maintenance.
Because the softening formula is citric-
acid based, an FDA-approved compound,
it is safe for all household uses, including
drinking, bathing, and watering plants.
Your new system mounts directly to your
home’s main internal water line and does
not require a soft-water loop.
We strongly encourage hiring a
professional plumber to install your
system.
However, if you are experienced with
home plumbing, we’ve included these
instructions to install your Home Duo
System. Please note that by choosing to
install your system yourself, you assume
the liability for its installation.
• System housing (1 head and 2 sumps)
• Mounting bracket
• 1 softener cartridge
• 1 carbon filter
• 1 wrench
• Tapcon screw pack
• System head screw pack
• 2 O-rings
• Lubricant
• Installation guide
• Warranty/registration card
Once installed, your Home Duo System
requires minimal maintenance. The
only maintenance you should expect
to perform is replacing the filter and
cartridge as needed (about every six
months). You should also replace the
O-rings with every other cartridge
replacement. See page 5.
Again, thank you for choosing NuvoH2O.
We look forward to providing you with
better tasting, convenient, eco-friendly,
salt-free soft water for many years
to come!
Home Duo System
Because plumbing standards vary, other bushings and connectors are not included.

Before Installation
Warnings & Cautions
• Ensure that any electrical plugs in the
area are covered or disconnected.
• Ensure that the existing plumbing is
up to code.
• Turn off water main.
• Acquire and install a pressure
regulator with your system.
• Maximum working temperature is
113° F (45° C). Minimum working
temperature is 39° F (4°C).
Maximum working pressure is 125 PSI
(8.6 bar) Minimum working pressure
is 7.25 PSI (0.5 bar).
• Do not install near electrical appliances.
• Do not use with water that is micro-
biologically unsafe or of unknown
quality without adequately treating or
disinfecting water before the system.
• The NuvoH2O softener is intended
for the treatment of hard water with
alkaline pH; do not install if inlet water
has a pH of 7.2 or less.
• Lubricate (included) O-rings.
• Install in a room that protects it from
freezing and excessive heat.
• Ensure that the plumbing has been
installed according to the plumbing
code before installation.
• Ensure that the water main has been
shut off prior to installation.
• Replace the filter and the cartridge at
least every six months. You may need
to replace them more frequently based
on water usage.
• Failure to replace the filter and
cartridge in recommended intervals
may result in poor softener
performance and/or cracks in the
housing, causing leakage and
possible flooding.
• Do not allow cartridge to come in
contact with copper, stone (natural
or unsealed), carpet, cement, or
other flooring.
• If water leaks between sump and
head, re-lubricate the O-ring or replace
the O-ring with a new one.
• Head must be installed with the water
flowing through the filter side first.
If water flows through the softening
medium, CitraCharge, will be filtered
out having no effect on your water.
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Home Duo System
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AD
BB
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FILTER SOFTENER
WATER FLOW
DIRECTION
WATER FLOW
DIRECTION

Installation Instructions
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Home Duo System
1. Verify the water main has been
shut off.
2. Using a stud finder, attach mounting
bracket to the studs in the wall.
3. Remove the system from package.
Remove the filter and cartridge from
the housing. Be sure to check inside
the system for loose foam, plastic,
or package contents.
4. With the filter side of the head near
the inlet pipe, install the system by
attaching the head to the mounting
bracket. Ensure that the system is
installed vertically with the blue
head at the top of the system. Do
not invert the system.
5. Install a pressure regulator (E)
ahead of the NuvoH2O system. Set
for 45-65 PSI. A pressure spike,
though unlikely, can still damage
the system if it is not protected and
potentially result in leaks.
6. Install a bypass. See the diagram
on page 4.
7. Use flexible hoses to connect
the inlet pipe to the inlet port on
the system. Use flexible hoses to
connect the outlet port of the system
head to the outlet pipe. Failure to
use flexible hoses may result in
water leakage.
8. Use 3-4 wraps of Teflon tape to seal
the connections.
9. Lubricate (included) the O-rings at
the top of the housing sump.
10. Remove the protective plastic wrap
from the cartridge and filters before
inserting back into housing.
11. Insert and seat the cartridge and
filter into the sump.
Water softening cartridge: the small,
round holes on the side of the
cartridge must be at the top. See the
cartridge replacement instructions
for more details.
12. One at a time, carefully attach both
sumps (now with the cartridge and
filter inside) to head by rotating the
collar clockwise. Secure with the
wrench provided. Note: Be sure
to install the clear sump with the
carbon filter on the filter side of
the head.
13. Open the pressure release valve
on the top of the heads using a
screwdriver (do not remove
the pressure release valve, only
loosen it).
14. Open the first bypass valve (A),
allowing the sump to fill with water.
When water leaks from the pressure
release valve at the top of the heads,
tighten to close (B).
15. Close the first bypass valve (A),
allow cartridge to sit in the housing
without water flow for one hour.
Open main valve (C), thus allowing
water to flow throughout the
household while cartridge sits.
16. After one hour, close the top bypass
valve (C) and slowly open the first
and last bypass valves (A & D),
allowing water to flow through
the system.

Replacing the Filter and Cartridge
877-688-64266
Home Duo System
1. Before replacing your filter and
cartridge, we recommend having a
towel on hand and placing a bucket
underneath your softener system
to catch any water that may spill.
The bucket should also be used to
carry your spent cartridge as the
concentrated solution can damage
flooring
if it drips from the cartridge.
2. Discontinue water flow to the
system by closing valves A and D
(see diagram on page 3). Open
valve C, allowing water to flow to
the home. Loosen pressure release
valve in the head of the system
with a screwdriver. Use towel to
absorb water that leaks from valve.
3. Using the black plastic wrench
provided, turn the blue collar
clockwise (left) to loosen the sump
from the head of the system.
CAUTION: The sump will be heavy
and full of water!
4. Remove the spent cartridge. Turn it
upside down into a sink or tub and
let it drain completely. The outside
of the cartridge can be rinsed
with warm water. The water that
empties from the cartridge will be
very concentrated. DO NOT allow
it to come in contact with copper,
stone (natural or unsealed), carpet,
cement, or other flooring.
5 Clean the inside of the sump with
dish soap, 1/2 teaspoon bleach,
and water. Rinse thoroughly.
6 Remove the plastic shrink wrap
from your new filer and cartridge
and insert them into the sumps. The
small, round holes on the side of the
cartridge must be at the top.
7. Be sure to align the filter and
cartridge properly in the sumps and
heads. Failure to do so may cause
them to crack when tightening the
collars back onto the heads.
8. Inspect O-ring, on the top of the
sump, for wear. Ensure it is seated
properly. Lubricate O-ring with a
water-based lubricant or replace
as needed.
9. One at a time, carefully attach both
sumps (now with the cartridge and
filter inside) to head by rotating the
collar clockwise. Secure with the
wrench provided.
10. Open the first bypass valve (A),
allowing the sump to fill with water.
When water leaks from the pressure
release valve at the top of the head,
tighten to close (B).
11. Close the first bypass valve (A),
allow cartridge to sit in the housing
with no water flow for one hour.
Open main valve (C), thus allowing
water to flow throughout the house-
hold while the cartridge sits idle.
12. After one hour, close the top bypass
valve (C) and open the first and last
bypass valves (A&D), allowing the
water to flow through the system.
13. After installation, allow water to
flow through the system without
consuming the water, i.e. a shower.
This will allow any excess carbon
from the filter to exit the system.
Note: If the system is unused for an
extended period of time replace the
filter and cartridge before use.

Money-Back Guarantee
We’re so confident in the performance
of the Home Duo System, that if you
are not completely satisfied within the
first 90 days from the date of purchase,
you may return it for a full refund of
your purchase price, less shipping and
handling. Purchases made through third-
party resellers and retail partners must
be returned through those partners and
are subject to their return policies. Visit
NuvoH2O.com/policies to learn more.
Everyone’s water quality is different. If
you’re not getting results you expect,
we may be able to help you adjust
the treatment level from your softener
to improve your water quality. Please
contact us if we can be of any assistance.
Call 877-688-6426 or email nuvocs@
nuvoh2o.com.
5-Year Limited Warranty
Product Registration
In the unlikely event that you experience
a manufacturing defect with your system,
NuvoH2O may either modify, or
exchange your softener. To qualify for
warranty, you must purchase the system
directly from NuvoH2O or an authorized
NuvoH2O reseller, register your system
with NuvoH2O, and use only genuine
NuvoH2O replacement cartridges and
parts. For full warranty details, visit
NuvoH2O.com.
To register your NuvoH2O Home Duo
System, visit: NuvoH2O.com/register
If you do not have access to a computer
please call one of our helpful customer
service agents at: 877-688-6426.
Or, simply mail back the registration card
included with your system.
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Home Duo System

v.09/2021
877-688-6426 | NuvoH2O.com