HQUA HQUA-S350 User manual

HQUA
INSTRUCTION MANUAL
Electronic Water Softener/Descaler
HQUA-S350

Content
s
Section 1 General Information………….........2-4
1.1 What is hard water?
1.2 How does the limescale deposit?
1.3 Traditional water softener
1.4 HQUA S350 Electronic Water Softener/Descaler
Section 2 Operation Manual…………...........5-11
2.1 Package List
2.2 Precautions
2.3 Installation
2.4 Operation
Section 3 Observation Timetable…….........12-13
Section 4 Frequently Asked Questions.......12-14
Section 5 After-Sales Service……………….....15
Commitment……………………………………..15
Version No.20210101 By James
HQUA Technical Support Team At NY, US

General Information
3
Section 1 General Information
HQUA S350 is an electronic water softener/descaler with revolutionary new technology
is adopted, against for your hard water problems without the need for salt, chemicals or
even the any change in your plumbing system. Since it is a very new technology, we have
to establish some basic concepts before we introduce its function in your mind.
1.1 What is hard water?
Hard water is the water that has plenty of minerals in (compare to "soft water"), which is
formed when water percolates through deposits of limestone and chalk.
Hardness can be quantified by instrumental analysis. The total water hardness is the
sum of calcium and magnesium ions.
Hard drinking water do have moderate health benefits, but it would pose critical
problems in water appliances and pipe system, such as, limescale.
How hard is my water?
(Check your local regional health authority website or other municipal resources
for local regulations, sampling procedures, water testing facilities (accredited
testing labs), and any associated fees. The local authority would give you
professional advice for tests and which company is verified to do that.)
1.2 How does the limescale deposit?
The main constituent of the lime scale is calcium and magnesium carbonates.
Apparently, the harder your water is, the more limescale would be. These compounds
form into hard deposits setting on the surface of sinks, faucets, pipes, shower heads, and
inside appliances, creating restrictions and greatly reducing the efficiency of water heater
and furnaces.
And when the first layer formed, the deposit will get easier to stay on its rough surface.
1.3 Traditional water softener
Traditional water softeners work by "Ion Exchange", this process will eliminate calcium
and magnesium that dissolved in the water to prevent the reaction with carbonates.
Chemicals need to be added periodically to guarantee its function. It would need
continually attention and money for the maintenance.
1.4 HQUA S350 Electronic Water Softener/Descaler

General Information
4
HQUA S350 functions by the complex, frequency modulated electromagnetic wave that
transmitted through two cable bands wrapped around the main water pipe.
When the frequency meets the natural frequency of the calcium/magnesium carbonate
which is dissolved in the water. A physical phenomenon called "resonance" occurs, and
the dissolved calcium/magnesium carbonate would precipitate out in the water. The
calcium/magnesium carbonate will stay in the water instead of stick to any surface of the
fixture, since its crystal texture is not as sticky as the they are in the limescale.
Meanwhile, the carbon dioxide that released from the water will help to dissolve
existing limescale deposits and drain from your plumbing system.
Unlike traditional water softeners, there won't be any change in the water
hardness after the operation of HQUA S350.
S350 provides three different modes for different water situations(hardness)
Soft: <7 gpg/120 ppm
Normal: 7-14 gpg/120-140 ppm
Hard: 14-25 gpg/240-425 ppm
Click the button to check the mode and view look of the waves.
Notices:
1.4.1 We would suggest you combine the use of traditional water softener and
S350 to achieve better performance if the water is very hard(≥25gpg/425ppm). S350
should be installed after the water softener if that’s so. And S350 would help you
decrease the salt-use in the traditional water softener since it would produce less
sticky crystal of calcium/magnesium carbonate.
1.4.2 Water condition changes from area to area, we could not guarantee
S350 would get very good performance in every cases. It is a very new technology.
We are still keep improving it. If you are not satisfied with the performance in 1-year.
We would provide a full refund without asking for a return. Please share your
original order number and contact us if you would like to take it.

Operation Manual
5
Section 2 Operation Manual
2.1 Package list
1. The main unit of the HQUA S350.
2. UL listed power supply with 60 in/ 1.5 meters cord.
3. Some cable ties for installation of the cable bands.
4. Two cable bands to emit the electromagnetic wave in 40 in/ 1 meter.
2.2 Precautions
Mounting position

Operation Manual
6
1. We recommend this unit should be applied at the entry of main water supply pipe.
But it would work properly if you just install it on the inlet of the water heater since
the lime scale happens in the hot water line most likely.
2. You could decide the relative position between two cable bands and the main unit.
But make sure do not cover each other.
3. HQUA S350 could install horizontally, vertically or at any angle you want. The main
unit also should be fixed on the wall or any steady surface.
4. Make sure the wires are enough to connect the main unit when you pick the
point to install the main unit.
5. If the space is limited, is ok to wrap the cables in the branches as close as the main
pipe.
Figure 1 Different Installation Position
Notices:

Operation Manual
7
Make sure at least five feet from any TV, radio or any other information transmission
appliances to minimize the possible interference. A short distance with those devices
might work too, test it on your own. And if you would like to install this device outdoor,
please make sure you have a waterproof space without direct sunlight.
The cable band is not water proof also, splash is ok. But it is wise to keep the whole unit
dry, away from the short circuit.
Pipe system requirement
HQUA S350 could work effectively for a whole house plumbing system. Or a pipe
system which the longest flow distance less than 70/80 feet. Bigger house requires more
HQUA S350 Softeners/Descalers.
The diameter of the main water pipe should not exceed 1.5 inch. HQUA S350 couldn’t
handle a larger pipe.
HQUA S350 could fit for any type of water pipe: galvanized, brass, cast iron, copper,
stainless steel, pvc, pex. Metal pipe might need more time to observe the descaling and
softening phenomenon compared to the plastic pipe system. Plastic pipe system owns
the best performance.
2.3 Installation
It is very convenient to install HQUA S350 on your pipe system, no plumbing job
needed. Make sure you got everything you need according to our package list before you
start it. You are welcome to e-mail us if you have any question with installing this unit.
Step 1 Wrap the antenna (cable band) on the pipe
There are three parts of the cable band. Part 1 is the wire that connects to the main unit;
Part 2 is the connection terminal; Part 3 is the antenna (cable band), and there is another
connection terminal at the end.
The two cable bands are the same. It doesn’t matter if the black on the left or right,
same to the red wire.

Operation Manual
8
Figure 2 Output cable structure
Use the white plastic cable tie (work by looping round the pipe and inserting the free
end into the oblong hole at the other end. A clicking sound would be heard as the tie is
tightening) to fix Part 2 on the pipe at a certain tilt that try to fit the pipe tightly.
Figure 3 Wrap the cable on the pipe
We suggest you ‘lock’ the connection terminal part (Part 2) on the pipe to start it. And
wrap the antenna helically to form a certain coil on the pipe. You should avoid the antenna
to cover themselves to archive a better performance.
Please don’t worry about the transparent tape that attached on the cable band, it works
as an insulator, do not try to remove it from the band.
And tie the end connection terminal of the cable tightly. There should be at least 9
rounds on the 1” pipe, and 7 rounds on the 1 1/2” pipe. You have to make sure there is no
gap between the cable bands and the pipe surface. As close as they are, it would work in
a good condition.
Step 2 Wrap another antenna (cable band) on the pipe
Refer to Figure 4, wrap it with a different direction.

Operation Manual
9
Figure 4 Wrap another cable on the pipe
Step 3 Mount the main unit on the wall
Figure 5 Engineering Drawing for Mounting
We provide an engineering drawing to help you locate the two mounting points/holes.
Mark them on the wall and drill two with 15/64” or 1/4” bit. Insert the expand nails in and
tighten the screws into it. You could also fasten the tapping screw directly on the points if
it is a wooden wall.
Notice: Make sure the output wires which have already fixed could reach the
main unit and connect it easily.
There are two female terminals below the main unit, insert the output cable into the
main unit, and connect the power supply with the female terminal above the main unit.
Step 4 Connect to the power supply

Operation Manual
10
Plug the power adapter to the outlet of your power supply. When the screen is working,
that means the unit is working in a good condition.
2.4 Operation
It is very easy to operate this unit. There are three modes on it and you could push the
button on the left to decide which mode you would like it to run.
Click the button to change the mode. It has three modes: soft, normal, strong. They
work for different water hardness, which we suggest you test yours first. But you could
level up the modes gradually from soft to strong if you find there is no change in your
water system. We would suggest you stay at each stage for at least 2 weeks.
And the screen would off when there is no other click in 60 seconds to save power.
Soft
Normal