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Full Text Searchable PDF User Manual
A2Z OZONE, INC.
110 or 220/240VAC 50/60Hz
A2Z OZONE, INC.
1844 Cargo Court
Louisville, KY 40299 - USA
CAUTIONS AND GENERAL NOTES
IMPORTANT SAFETY INSTRUCTIONS
TUBE CONNECTION AND START-UP:
USING OXYGEN BOTTLE/TANK
USING OXYGEN GENERATOR
USING EXTERNAL AIR COMPRESSOR
MAINTENANCE / PROCEDURES
CLEAN FAN SCREEN
CLEAN OZONE TUBE
HEALTH HAZARDS OF OZONE
SAMPLE SCHEMATIC DIAGRAMS
INJECTION MANIFOLD DRAWING
INSTALLATION DRAWING # 1
INSTALLATION DRAWING # 2
A2Z Ozone WARRANTY REGISTRATION CARD
CAUTIONS AND GENERAL NOTES
This manual covers the
SWIMMING POOL OZONE GENERATOR MODEL SP-Series Corona
Discharge (CD) Ozone Generators. A2Z Ozone Systems Inc. reserves the right to make changes to
the product covered in this manual to improve performance, reliability, or manufacturability.
Make sure that this manual is used with the original product it was shipped with. Although every
effort has been made to ensure accuracy of the information contained in this manual, A2Z
Ozone Systems assumes no responsibility for inadvertent errors.
IMPORTANT SAFETY INSTRUCTIONS
PLEASE READ AND FOLLOW ALL INSTRUCTIONS.
Read this manual completely before attempting installation and/or operation.
Install in accordance with the installation instructions.
Connect to a grounded, grounding type receptacle only.
Warning - To reduce the risk of electrical shock, replace damaged electrical cable immediately.
Follow all applicable electrical codes.
Electric shock hazard. Be sure to turn power OFF and disconnect from power source
before any Service work is performed. Failure to do so could result in serious injury or
A licensed, qualified electrician should make all electrical connections.
Install the ozone generator at least five feet from the water using nonmetallic plumbing.
Install ozone check valves to prevent water from contacting the electrical equipment.
The electrical supply for this product must include a suitably rated switch or circuit
breaker to open all ungrounded supply conductors to comply with Section 422-20 of the
National Electrical Code, ANSI/N FPA 70-1987. The means of disconnecting the
equipment must be readily accessible to the operator(s) but installed at least five feet
from the water.
Ambient temperature around the equipment should be between 40 and 100 Deg. F (4.5
to 38 Deg. C). If the equipment is installed in an environment with temperatures over
100 Deg. F, additional air cooling must be provided. Installation without additional air
cooling in an environment where temperatures exceed 100
Deg. F for any continuous 24
hour period will void the warranty.
The system should be sized appropriately for its intended use by a qualified professional
familiar with the application. The manufacturer for its intended use must validate this
Warning - Short term inhalation of high concentrations of ozone and long term inhalation of low
concentrations of ozone can cause serious harmful physiological effects.
DO NOT inhale ozone
Gas produced by this device.
For your safety, do not store or use gasoline, chemicals or other flammable liquids or
vapors near this or any other appliance.
A spontaneous and violent ignition may occur if oil, grease or greasy substances come in
contact with oxygen under pressure. These substances must be kept away from oxygen
regulators, cylinder valves tubing and connections, and all other oxygen equipment.
IT’S HIGHLY RECOMMENDED TO SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE!
SWIMMING POOL OZONE GENERATOR MODEL SP-Series is a compact, regulated output
with Corona Discharge (CD) ozone cell with 3, 5, 8 and 16 g/hr of ozone output. The units are air-
cooled, robustly built and reliable. They produce ozone concentrations between 3 to 16 g/hr.
The components are made of high quality material and the controls are easy to use and view.
The units feature ozone concentration knob to control ozone from 10 - 100% concentration.
Use the AMP meter to see any possible defaults. Observe the Air Flow meter if venturi has
enough flow to create vacuum and inject ozone into water pipe line. The Air Flow meter should
be above 2 LPM for the proper amount of suction.
STANDARD FEATURES / SPECIFICATIONS
Air Cooled, Corona Discharge Ozone Generator 3, 5, 8 and16 g/h
LED Status Indicators for Power and ozone outlet
Variable ozone output control (10-100%)
LED Ozone Default warning
Durable frame and enclosure
Produces up to 3, 5, 8 and 16 grams per hour Ozone
PTFE for O
Stainless steel fittings
Well packaged unit
Ozone output g/h
Oxygen : 25-45 Air: 5-15
220/240 OR 110/120 VAC 50/60 Hz
11X8X14.3 12X8X14.3 15X8X18
Air Cooling Fan
Oxygen or Clean Dry Air
Suggested ozone concentration and run-time in Swimming Pools
Ideal pump run time on 24 hour cycles. If user chooses to run pump on 12-hour cycle time then
water circulating rate should be once each 3 to 4 hour period. The pump should re-circulate the
total volume of pool water through the injector at least once each 4 hr period for maximum
Swimming pool based on 24-hour run-time
Pool Size in Liters, Gallon
Ozone output Generator Required
25000 L, 6600 G
3000 mg/h (3 g/h),
50000 L, 13000 G
5000 mg/h (5 g/h)
100000 L, 26000 G
8000 mg/h (8 g/h)
200000 L, 52000 G
16000 mg/h (16 g/h)
Heated swimming pools and rock pools require 10 - 15% more ozone.
Meters (L) x Meters (W) x Meters (D) = cubic meters x 1000 = Total Liters
Cubic Meters to Liters: Cubic Meters x 1000 = Total Liters
Cubic Meter/3.785= Gallon
If the pool volume is say 60000 liters then the pump should be capable of re-circulating the
water at a rate of at least 15000 liters per hour. This way, the total volume of water through the
pool will be passing through the injector at least once each 4 hour period. Less pump run time
for the minimum liters. Use Sodium Bromide if additional chemicals are required. Dosage is 20 g
per 1000 Liters of water every 6 months
OZONE GENERATOR PLACEMENT:
Install ozone generator in a clean, dry area with a good ventilation.
Ozone generator should be placed above any water level for the following reason; if you were to
lose pressure in the venturi vacuum, gravity will cause water to travel down the ozone output
tube and enter into the ozone generator. Please look at provided drawing for more information.
If water height less than 5 feet. (1.5 m)
Be sure to place ozone generator in room temperatures 40 and 100 Deg. F (4.5 to 38 Deg. C)
Select a location for the ozone generator that is as close as possible to the ozone injection point.
Situate the unit in a manner suitable for convenient electrical access. The MODEL SP-SERIES
enclosures is not rain proof, so it is important to choose a location that will keep the system
away from direct weather and excessive heat.
The mounting holes are located on the back of the ozone generator for convenient wall
mounting. Mounting hardware is not provided.
The basic installation method for the MODEL SP-Series system is INJECTOR MANIFOLD
PLUMBING CONNECTIONS. INJECTOR MANIFOLD MUST BE ASSEMBLED (ordered from our site
Picture of typical Venturi Injector Manifold
Refer to the ‘Venturi injector Installation’ diagram and follow the instructions below if the ozone
is being injected directly into the full flow of the pool’s return line:
Identify the pool water supply line after the pump, filter and heater and Tap into this
point. The ozone injection point should be the last component in line and as far as
possible from the injection point of the residual chemical.
Glue in the proper injector manifold, noting the direction of flow (indicated by an arrow
on the injector). Once the injector is installed, the vacuum may be adjusted as described
in the ozone operation Section.
Schematic diagram of injector manifold point of installation with “Hartford loop”
DETAILS OF VENTURI INJECTOR MANIFOLD:
Attention: Install venturi with bypass valve on water recirculation pipeline. Arrow on venturi
MUST be set as the same direction as water flow.
Turn water pump on and close the by- pass valve until vacuum is created at venturi input.
Note1: Use the installed flow-meter to check vacuum -2 to -3 PSI (-0.14 to -0.21 bars) or place
finger over end of venturi valve to feel vacuum while adjusting the by-pass venturi valve. At this
point, the air is injected into the water line; you will observe the air as bubbles in the water of
the swimming pool.
Use the power cable provided to connect the
SP-Series to a properly rated and
grounded receptacle. If the
ozone generator will be used where water is present, a
ground fault circuit interrupter must protect the circuit.
TUBE CONNECTION AND START UP:
Connect silicone tube (if you use oxygen generator or oxygen tank or external air compressor) to
ozone generator (Air IN) and direct it away from hot and humid air to the ozone cell. This will
serve as oxygen, or fresh air for ozone production.
Connect ozone generator PTFE tube (OZONE OUT) to venture injector manifold.
Install a check valve 10 inches after ozone out let tube fitting (even the venturi has internal
check valve). You may do this by cutting tube ten inch after OZONE out fitting. Connect both
ends of cut tubes to the check valve. Please direct the arrow on the check valve toward venturi.
START, first the swimming pool water re-circulation pump. Make sure you have vacuum at the
venturi via a gauge and test it by putting your finger on the venturi opening. You should feel a
small suction, this is what is needed to get the ozone production out of the unit and inject it into
the pool piping system. Check Flow meter, air flow should indicate at least 2 LPM. Now connect
the PTFE tube from the venturi to the ozonator and turn on the power in the internal panel of
The ozone indicator light up and the fan should turn on. Increase power to the Cells by turning
the ozone control knob clockwise. Please refer to the charts above for the approximate ozone
concentration for your size of pool.
OZONE GENERATOR OPERATION
System Running Time
On residential pools, the ozone generator should operate for six to eight hours per day.
Normally, the ozone system will run whenever the pool filtration system is operating. Since
commercial pool and spa filtration systems normally operate 24 hours a day, the ozone system
will run continuously on a commercial pool.
Understanding Your Water
If a high concentration of any mineral (such as calcium or iron) exists in the water, it is necessary
to treat it before starting the ozone system.
Note: This should be required only when the pool is drained and refilled.
If the water is clean and clear, the ozone system may be started immediately. If the water is
dirty and cloudy, it is recommended that it is drained and the filters thoroughly cleaned before
refilling and starting the system.
Note: It is not recommended that an in-ground pool be drained in the winter or after the first
rain of a season. Use a shock treatment instead of draining to avoid the possibility of severe
damage resulting from “floating” the pool out of the ground.
Ozone and Bromine
Ozone has a short “half-life”, which means it dissipates and re-transforms into oxygen very
quickly. Therefore, a small residual of another disinfectant must be maintained. We recommend
the use of bromine in indoor pools. Bromine residual will act as a buffer when the ozone system
is not operating. Bromine needs to be maintained at only 1.0 PPM (parts per million) so that the
trace amount of the product in the water will not be noticed. Chlorine will also work as a
residual oxidizer and may be used effectively in conjunction with the ozone system.
Ozone and Chlorine
For outdoor pools, we recommend the use of chlorine to supplement the ozone. Chlorine
residual will act as a buffer when the ozone system is not operating. Chlorine needs to be
maintained at 1.0 to 2.0 PPM (parts per million).
To properly prepare the water for the ozone system, make the following adjustments and
maintain the levels outlined below:
Bromine 1.0 PPM or Chlorine 1.0 to 2.0 PPM and pH 7.2 -7.6
Total Alkalinity 100-150 PPM
Calcium Hardness 200-350 PPM
any unusual reactions are experienced when ozone is introduced into the water (such as
abnormal color or odor), please wait a few days to give the ozone and filter system time to
Always maintain the recommended residual levels of bromine or chlorine (at least 1 .0 PPM) to
help control algae formation. Brushing poolside once a week is also effective, as is any algaecide.
If an unusually high bather load causes cloudiness in the water, it is recommended that a
chlorine shock treatment used to assist the ozone in cleaning the water. Routine, periodic
shocking is recommended to prevent buildup of organic contaminants, especially with indoor
MAINTENANCE - OZONE GENERATOR
Clean the ozone generator cabinet’s air filter:
This filter must be cleaned regularly. Depending on the location of the unit, it may be necessary
to clean the air filter monthly. The filter elements are located on the bottom of the cabinet (see
illustration below). This is the air intake element for the cooling fan and may therefore require
the most frequent cleaning. The element may be cleaned with soap and water and should be
dried completely before reinstalling.
Note: In a clean environment, this procedure may only need to be performed every three
IMPORTANT: CLEAN THIS FILTER REGULARLY! FAILURE TO DO SO WILL PROMOTE OVERHEATING AND
WILL VOID THE WARRANTY!
TURN OZONE GENERATOR OFF.
CLEAN FILTER SCREEN WITH WATER AND SOAP AND DRY IT WITH A CLEAN TOWEL.
INSTALL BACK THE SCREEN.
TURN ON THE OZONE GENERATOR.
BE SURE SCREEN DOES NOT TOUCH FAN BLADE.
MAINTENANCE - SWIMMING POOL FILTER
Ozone will keep the water much cleaner than any other type of water purification system. This is
due to the fact that ozone neutralizes body oils and soaps. After ozone kills the bacteria, the by-
products of the process are oxygen, carbon dioxide and filterable solids. Since filterable solids
are usually at higher levels than with conventional disinfection processes, the filter will have
more work to do. Keeping the filter clean will make a noticeable difference in the clarity of the
water. It is recommended that a regular filter cleaning schedule is established, or poor water
flow through the filter will result. This will have a direct effect on the amount of ozone that
enters the water.
A word of caution: There is extremely high voltage inside the ozone generator. If you suspect
a problem, disconnect the power to the unit at the service disconnect box or main electrical
panel and immediately contact your swimming pool maintenance technician. Inspect the
ozone delivery line check valves daily for water seepage and strongly recommend replacing
the injector check valve yearly.
Two check valves are available for the ozone delivery system, One where the ozone tubing
attaches to the ozone generator and one where it attaches to the injector. The purpose of
these check valves is to prevent water from backing up into the ozone generator. The PTFE
ozone delivery line(s) should be inspected daily to insure water is not flowing back into the
ozone generator. Check valves should be replaced yearly. Note: The only time it is possible for
water to flow back toward the ozone generator is during a system shutdown. Always inspect
for water seepage during this time.
Fuse is located on the panel at the bottom of the unit.
The fuse is 3 AMP for SP-3 to SP-8 and 6
AMP for SP-16.
The test method for failure of the ozone generator:
Check the power input for correct voltage (110V OR 220V).
Unit is on but no ozone; this is due to over heating or water back flow to the ozone generator.
Turn off ozone generator and let air flow through the unit for 1 to 2 hours to dry the ozone tube.
Check main fuse, change if needed. It is a
3 AMP for SP-3 to SP-8 and 6 AMP for SP-16
Check the tubing inside the machine for kinks.
If the machine can produce some air, but the air is not ozone; please check the following:
A. The power indication lamp is lit.
B. Check ozone control knob is set above zero.
C. Check ozone board fuse, 3 AMP.
D. Check wire from terminal to ozone board.
E. Check Pot wire is connected to ozone board.
If you are still experiencing problems, please contact A2Z Ozone Systems for more information.
HEALTH HAZARDS OF OZONE
Do not allow the ozone gas level in any living area to exceed FDA-recommended level of
WARNING: Long term inhalation of high concentrations of ozone gas in the air can cause nasal
and/or lung irritation. When using this unit for air treatment purposes, it is recommended that it
be operated in unoccupied spaces.
Detection Levels in Air
Ozone gas can be detected in air by its distinctive odor at concentrations of about 0.02 ppm.
Although each nose varies, “olfactory fatigue” occurs quickly. As a result, DO NOT RELY ON
ODOR AS A WARNING OF HIGH OZONE CONCENTRATIONS. The permissible exposure level (PEL)
or time weighted concentration for ozone gas to which workers may be exposed is 0.1 ppm
averaged over 8 hours, 5 days a week (OSHA). The short term exposure limit is 0.3 ppm average
over 15 minutes. The concentration of 10 ppm ozone gas in air is generally accepted as
immediately Dangerous to Life or Health (DLH).
SAMPLE SCHEMATIC DIAGRAMS
Swimming Pool Venturi Injector Manifold:
SAMPLE SCHEMATIC DIAGRAM
CORONA DISCHARGE (CD) OZONE SYSTEMS
Ozone is manufactured in the CD ozone generator by drawing in air, which is composed of 20%
), and exposing it to multiple high voltage electric0). The ozone is drawn into the
water by a venturi injector/mixer, killing any bacteria, viruses or mold spores it contacts. Ozone
is generated on-site, eliminating the need to store toxic and corrosive chemicals. The corona
discharge method is the most efficient way to produce large amounts of ozone.
A2Z Ozone Systems, Inc. manufactures high output corona discharge systems capable of
producing enough ozone to substantially reduce the consumption of other chemical
disinfectants. This reduction will make the water crystal clear and rainwater soft while allowing
for cost savings on chemicals and maintenance. Also, important health advantages will be
realized, including no hair discoloration, excessive skin dryness, faded swimming apparel, or
irritation to the eyes, nasal passages and throat. Ozone reacts to waterborne contaminants
significantly faster than other disinfectants and the primary by-product is pure oxygen.
A2Z Ozone Systems, Inc. ozone systems are built with the finest components available. All are
air-cooled and use a venturi injector system to create the best possible contact and mixing of
ozone while maintaining a high level of safety.
In contrast to ultraviolet ozone generators, corona discharge systems produce a much higher
concentration of ozone and in much larger quantities. In addition, the annual expense of
replacing lamps and checking ballasts is unnecessary with corona discharge systems. Corona
discharge ozone generation is the most economical and effective method to use on large,
commercial water applications.
FAQ's: OZONE SWIMMING POOLS / SPA BATHS
1) What is ozone?
Ozone is a highly reactive and unstable form of oxygen. Ozone is made up of three oxygen
atoms together, written as O
. It is called activated tri-atomic oxygen. It is a gas and is denser
than air. Ozone is the second most powerful sterilizer in the world and its function is to destroy
bacteria, viruses and odors. Ozone is nature's way of purifying the air we breathe. It is the
distinctive “electric” odor smelled during and after thunderstorms. Ozone derives from the
Greek word ozein, which means to smell. If natural ozone ceased to exist, life on this planet
would also cease to exist.
2) Is ozone a new technology?
Ozone has been around as long as oxygen, sunshine and lightning. It was discovered and
isolated in 1840 by Christian. F. Schoenbein who noticed a unique odor during electrical sparking
and electrolysis experiments. He realized that the odor was the same one he observed after a
lightning flash. In 1886 de Meritens of France conducted the first experiments using this unique
gas as a disinfectant. He proved that even minute amounts of ozonized air would sterilize
polluted water. A few years later in 1891, the German scientist Froelich reported the
bactericidal properties of ozone from pilot plant tests conducted at a drinking water treatment
plant in Martinkenfeld, Germany. In 1893, the first drinking water treatment plant to employ
ozone was built in Oudshoorn in the Netherlands. In 1906, the first large-scale water treatment
facility built specifically to use ozone as a disinfectant was completed. By 1977, there were 1039
ozone drinking water treatment plants in Europe. Today there are thousands water treatment
plants worldwide using ozone. Ozone has been used in swimming pools and spas in France,
Germany, Netherlands, and other European countries since the early 1950's and in the United
States since about 1975.
3) How is Ozone Produced?
Ozone can be produced artificially according the same principle as it occurs in nature, which
means by UV light (ozone layer) or via Corona-Discharge (CD) high voltages, thunderstorm. In
both methods the connection between the oxygen molecules is broken up. Consequently
oxygen radicals are produced, which connect with the oxygen molecule to O
(ozone). For the
production of ozone, corona discharge is used more because of the greater advantages of this
method. Advantages are the lower costs for ozone production (more cost-efficient) and the
greater durability of the system. For the feed inlet ambient air can be used as well as pure
oxygen. For pure oxygen, oxygen generators can be used to concentrate oxygen out of air.
When pure oxygen is used a higher concentration of ozone can be produced.
4) How does ozone work?
Ozone operates according to the principle of oxidation. Ozone is faster than chlorine at killing
bacteria because chlorine needs to diffuse through the cell wall and disrupt the bacteria's
metabolism. Ozone, however, rips open the cell wall from the outside, causing the cell's
contents to fall apart. This process is called cell lysing. With ozone, after destruction of the cell,
all that is left is carbon dioxide, cell debris and water. As the ozone oxidizes material, it gets used
up. Once it has done its job of oxidation, ozone reverts back to oxygen (O
). This additional
oxygen in the water makes it taste good, smell good and gives it a sparkle. There are no toxic or
5) What will Ozone Destroy?
Ozone kills bacteria, viruses, spores, mold, mildew, fungi, amoeba and cysts. Various factors play
a role in effectiveness of ozone in the removal of contaminants, such as the amount of ozone,
the concentration of ozone, and the contact time of ozone with the organism. Ozone will not
usually eliminate all algae and hence an additional sanitizer must be added to the water to kill
algae and provide protection during the time the ozone generator is not on.
6) Is Ozone an Oxidizer?
The easy answer is yes. Ozone oxidizes at a rate of nearly 3000 times that of chlorine, and is
twice as powerful. Ozone will also oxidize metals such as iron and manganese, as well as the
bonds of many color-producing contaminants like decaying leaves and grass. Once the bond is
broken, the color disappears.
7) What are the benefits of using ozone?
Bacteria kill rate is up to three thousand times faster
50% stronger oxidizer than chlorine
Reduces traditional chemical use between 60% - 95%
Reduce handling and storage of unsafe chemicals
Reduce constant purchasing of harmful chemicals
Eliminate red, irritated eyes and dry, itchy skin
Eliminate costly replacement of faded swimwear
Remove unpleasant chlorine / chloramine odors
No adverse health or environmental effects
Improvement of the filter and coagulant capacities = reduction of coagulant use & less
Water consumption can be decreased, because of an increase in water quality
8) Can I stop using Bromine?
You will definitely reduce your chemical usage in your pool up to 95% depending on weather
conditions and pool characteristics. Ozone provides better water quality and oxidizes many
contaminants that bromine cannot. However, Ozone only lasts in pool water for a short period
of time (15-30 minutes) therefore in order to provide lasting protection during times when
ozone is not being injected, to control algae and to oxidize ammonia and swimmer waste, you
must maintain a small residual of bromine (1.0 to 2.0 ppm of bromine) in the water. The longer
the ozone system operates the less bromine you will have to use to maintain water quality.
Ozone will kill algae at the point of injection, not algae that are growing on the pool walls.
Recommended Dosage for Sodium Bromide is 20g per 1000 Liters of water every 6 months.
9) How does ozone get into the water?
Ozone is a gas and it is only slightly soluble in water. It must be thoroughly dissolved in water so
that the chemical reactions with contaminants can take place. The most common way in
swimming pools is with a venturi injector, which is a device a 100mm in length with each end
the same diameter (40/50mm) as the pool plumbing line. A section of pool piping is removed,
and a venturi injector is installed. The injector’s diameter is smaller in the middle, similar to
squeezing or pinching a hose. The water travelling into the injector begins to move faster. In the
middle of the injector there is a small hole. As water is pumped through the plumbing and past
the hole, a vacuum is created. The amount of vacuum is dependent on the amount of water
flow through the injector – more water equals more vacuum. If a small flexible hose or tube is
attached to this small hole, a liquid or gas can be drawn into the injector and mixed into the
water. The goal is to make the smallest bubbles possible and to keep the bubbles in contact with
the water for as long as possible. The ozone that does not get dissolved will kill or oxidize
anything in the water.
10) How long will ozone last in my pool?
For the purification of water and air, it’s needed to produce ozone on-site. Because of its short
half-life, ozone will decay soon when produced. The half-life of ozone in water is about 30
minutes, which means that every half hour the ozone concentration will be reduced to half its
initial concentration. For example, when you have 8 g/l, the concentration reduces every 30
minutes as follows: 8; 4; 2; 1; etc. In practice the half-life is shorter because a lot of factors can
influence the half-life. Factors are temperature, pH, concentration and sort solutes. Because
ozone reacts with all kinds of components, the concentration of ozone will reduce quickly. When
most of the components are oxidized, the residual ozone will remain, and the concentration of
ozone will reduce.
11) Will the temperature or humidity of the air or water affect ozone?
The temperature and humidity of the air will directly impact on the concentration of ozone gas
produced. The more humid and the hotter the air, the less concentrated the ozone produced
will be. Likewise the temperature of the water has a similar effect; the cooler the water the
ozone is injected into, the more effective the ozone will be at removing contaminants! Heated
pools require 10-15% more ozone than traditional pools.
12) Is ozone safe?
Ozone has been documented for over a century now, so quite a lot is known about it. OSHA -
Occupational Safety and Health Agency has stipulated that the safe allowable level of residual
ozone is 0.08 ppm. This is supposedly based upon the historical safety of ozone. Note that this
permissible level is for continuous exposure throughout an entire 8 hour day for 5 days a week.
No Federal or State agency can agree on what the maximum level of ozone exposure should be,
so there is no standardization in maximum permissible ozone levels. That signifies these
numbers are arbitrary, meaning they are not really sure of what a maximum sustainable ozone
level should be. Since excess ozone gives off an unmistakable strong "bleach like" odor, one
always know if too much is present in the air. In other words before ozone could possibly have
any unsafe effects, a person would be greatly offended by its bleach like odor. Ozone is safe to
use in occupied areas because we notice its unpleasant odor at very low levels and then have
the ability to turn it down. Ozone generators, when used correctly will not exceed government
guidelines for continuous safe exposure. Precautions should be taken, however, because the
nose can lose its ability to sense the ozone after a sustained period of time. If one senses a
headache or sore throat it may mean the ozone level is too high. The fact remains if the ozone
level is much higher than is recommended to be considered safe, it would become so pungent
that anyone could sense it. Ozone does this by becoming so offensive at high levels that we
would not be able to stay in the environment for more than a very short period. This is much
like what would happen if we entered a smoke filled room. No one has ever claimed a worker's
related illness resulting from ozone exposure
13) Is ozone safe for my pool equipment?
Most pool systems these days come supplied with plumbing that is ozone-resistant, example
PVC piping. However, Ozone gas can corrode metal and other materials such as nylon and
rubber. Care must be taken to check that all plumbing and piping between the injection point
(Venturi Injector) and the point of entry to the pool are made of ozone-resistant materials. All
our ozone generators are supplied with ozone-resistant accessories
14) Is ozone safe for swimmers?
Ozone dissolved in the water is pH neutral so the pH will not harm equipment or people. The
amount of ozone added to the water is enough to kill bacteria, virus, cysts, mold and spores, but
is safe and non-toxic to humans and pets - no red, irritated eyes and dry, itchy skin. When
properly installed and plumbed all of the ozone generated will be dissolved in the water or used
up oxidizing impurities in your water.
15) Does ozone affect water balance?
Ozone has a neutral pH (about 7.0) so it does not affect pH. Ozone has no calcium, no alkalinity,
and no dissolved solids. Therefore, ozone does not affect water balance. It does remove trace
amounts of metals such as iron or copper by oxidizing them to their highest oxidation state.
They will then precipitate out of the water and be trapped by your filter.
16) Can I run my pump and filter for fewer hours?
Ozone is only injected into your water when the pump is running. The longer you run the ozone
generator (and your pump and filter), the better your resultant water quality will be and thereby
reducing the need for residual chemicals. During summer / swimming season you should run
your ozone generator, pump and filter a minimum of 12 hours each day. We recommend that
you run your pump for 24hrs a day in summer. Up to 80% of the water treatment is done by
your filter, so don’t be afraid to use it. The extra electricity cost will be compensated by the
savings on costly chemicals.
17) Will there be a visible change to my water?
Yes! When ozone is first introduced into your pool water and during the first 72 hours, your pool
water may get cloudy. Ozone will begin to oxidize all of those particles and metals that your
present sanitizer would otherwise leave in your pool. When these particles are oxidized, they
form visible particles that are heavier than water and precipitate. Also, there will be pieces or
fragments of the cells that ozone has destroyed. So the cloudiness that you may see is oxidized
material, pieces and fragments of cells, and metal precipitates. Some of the dirt and debris in
the water is too small to be trapped by the filter. These small-sized dirt particles have a weak
electrical charge or pole. Because all the dirt particles have a negative charge, they repel each
other like two magnets. They are so small that they are not affected by gravity and therefore
won't settle out either. Ozone neutralizes these charges, which allows the particles to combine
into large enough particles to be trapped by the filter. Once these particles are oxidized,
neutralized and filtered, the water will have a definite "clarity and sparkle" that you may not
have experienced before. In addition, after the ozone does its work, it reverts back to oxygen.
This added oxygen will make the water look, feel and even taste better.
18) How should I prepare my pool before I install an ozone generator?
Adjust total alkalinity with Hydrochloric acid or Sodium Bicarbonate 80-100ppm
Adjust pH 7.2 to 7.8 (HCL acid to lower and Sodium Bicarbonate to increase )
Shock treat with Hydrogen Peroxide 35% ( 100mL / 1000 Liters pool water )
Ozone is used as primary Sanitizer and Sodium Bromide as secondary / residual Sanitizer
Sodium Bromide should test between 1-2 ppm (Dosage: 20g per 1000 Liters of water
every 6 months)
19) What special swimming pool maintenance ozone systems require?
Shock treat with Hydrogen peroxide
Maintain total alkalinity with Hydrochloric acid or Sodium Bicarbonate 80-100ppm
Maintain pH 7.2 to 7.8 (HCL acid to lower and Sodium Bicarbonate to increase )
Shock treat with Hydrogen Peroxide 35% ( 100mL / 1000 Liters pool water )
Keep pool clear of leaves and debris
Check and clean basket daily. Backwash regularly.
Use Algaecide if required – consult supplier for ozone compatible type
20) What special maintenance does the ozone generator system require?
Check Non-return valve for signs of water returning into the tube to the ozone
generator - replace if necessary.
Check the silicone tube for deterioration - replace if necessary
Check unit internal air filter for blockage
Check that small, fine bubbles are coming from pool return jet
Make sure no debris or dirt is blocking fan guards
Use the fingertip test on the air inlet port to the ozone generator to check that suction is
still present and Venturi injector is working correctly
21) How do I know if there is enough ozone for proper sanitation?
This can be a difficult question to answer. Experts have not been able to develop a minimum or
maximum level for ozone in swimming pool water because of the multiple variables involved
such as air temperature, water temperature, humidity and bather load. Pool owners who have
been using chlorine of bromine for a few seasons know how much sanitizer they use in a season
or year. Installing an ozone generator in these pools has resulted in a significant reduction in the
amount of chemical sanitizer used. The longer the ozone operates each day, the greater the
reduction in chemical sanitizers. Pool owners have had reductions in sanitizer use of 50 to 90%.
Your savings may vary based on pool usage factors. Ozone is not sold on the basis of being less
expensive than other sanitizers such as chlorine and bromine are. Its value is in smoothness and
sparkles to the pool water, elimination of the dry, itchy skin that chemicals can produce burning
red eyes and bleached bathing suits. Other important advantages include reduced pool
maintenance and reduced exposure to toxic chemicals in storing, handling and swimming.
22) Will my ozone generator help the ozone layer?
Ozone from a swimming pool ozone system will not add anything to the atmosphere or the
ozone layer. When injected into the water properly, no ozone escapes into the atmosphere.
Even if it does get into our atmosphere, it is like a drop in the ocean. Also, the ozone would have
to be transported 9 to 18 miles up. The ozone layer that you may have heard about is a layer of
mostly oxygen and ozone that is located in the lower stratosphere between altitudes of 9 and 18
miles. The ozone results almost entirely from oxygen (O
) splitting apart into two atoms of
) by solar ultraviolet radiation (the sun's UV rays) and then combining with molecular
) to form ozone (O
). Atmospheric ozone plays a critical role for the earth by
absorbing the ultraviolet radiation from the sun with a wavelength of between 240 and 320
nanometers (nm), which would otherwise be transmitted to the Earth's surface. This radiation is
responsible for sunburn to human skin. In addition, the incidence of skin cancer has been
statistically correlated with UV light intensities of 290 to 320 nm.
A2Z Ozone Systems Inc. - ONE YEAR LIMITED WARRANTY
The limited warranty set forth below applies to products manufactured by A2Z Ozone Systems
Inc. - and sold by A2Z Ozone Systems or its authorized dealers. This limited warranty is given
only to the first retail purchaser of such products and is not transferable to any subsequent
owners or purchasers of such products. A2Z Ozone warrants that it or its authorized dealers will
repair or replace, at its option, any part of such products proven to be defective in materials or
workmanship within ONE (1) year from the date of retail purchase of such products. (All parts)
ANY REPAIR OR REPLACEMENT WILL BE WARRANTED ONLY FOR THE BALANCE OF THE ORIGINAL
WARRANTY PERIOD. NOTE: USE ONLY A2Z Ozone AUTHORIZED REPLACEMENT PARTS. USE OF
ANY OTHER PART(S) WILL AUTOMATICALLY VOID THIS WARRANTY. THIS LIMITED WARRANTY
DOES NOT INCLUDE ANY OF THE FOLLOWING:
(a) Any labor charges for troubleshooting, removal, or installation of such parts;
(b) any repair or replacement of such parts necessitated by faulty installation, improper
maintenance, improper operation, misuse, abuse, negligence, accident, fire, repair material,
and/or unauthorized accessories;
(c) Any such products installed without regard to required local codes and accepted trade
(d) ANY IMPLIED WARRANTY OF MERCHANTABILITY OR IMPLIED WARRANTY OF FITNESS FOR
PARTICULAR PURPOSE, AND SUCH WARRANTIES ARE HEREBY DISCLAIMED: AND
(e) A2Z Ozone SHALL NOT BE LIABLE UNDER ANY CIRCUMSTANCES FOR LOSS OF USE OF SUCH
PRODUCTS, LOST PROFITS, DIRECT DAMAGES, INDIRECT DAMAGES, CONSEQUENTIAL DAMAGES
AND/OR INCIDENTAL DAMAGES.
TO OBTAIN WARRANTY SERVICE
Contact A2Z Ozone, 1844 Cargo Court Louisville, KY 40299, USA
Customer Service Number: +1 502-499-4977.
When filing a claim, you must provide:
1) Your name, mailing address and telephone number
2) The selling dealer’s name
3) Proof of date of purchase
4) The date of failure
5) A description of the failure.
After this information is provided, A2Z Ozone will release a RETURN GOODS AUTHORIZATION
(RAN) NUMBER. After receiving the RAN number the part in question must be returned to A2Z
Ozone, freight prepaid, with the RAN number clearly marked on the outside of the package. All
preauthorized defective parts must be returned to A2Z Ozone within thirty (30) days. Under no
circumstances may any product be returned to A2Z Ozone without prior authorization. You must
call or write prior to returning product or your returned goods shipment will be refused. Upon
receipt of preauthorized returned goods, A2Z Ozone will repair or replace, at its option, the
defective product(s) and return them freight (prepaid for products under warranty). Buyer’s
acceptance of the product and use thereof constitutes acceptance of these terms.
A2Z Ozone WARRANTY REGISTRATION CARD
This information can be also send by EMAIL to us. Please provide ALL pertinent information
and send within twenty (20) days to:
Otherwise, please fill out completely and return to A2Z Ozone by post within twenty (20) days of
Phone (____ ) ________________
Phone ( ) ________________
Purchased Date: _______________________Date Installed____________________
SWIMMING POOL A2Z S-SERIES OZONE GENERATOR
Comments / Questions:
DO NOT FORGET TO CUT OUT, PLACE IN ENVELOPE AND MAIL TO THE FOLLOWING ADDRESS
FOR INSTANT WARRANTY COVERAGE!
A2Z Ozone Systems Inc.
ATTN: Warranty Dept.
1844 Cargo Court
Louisville, KY 40299, USA
A2Z Ozone Systems Inc.
1844 Cargo Court
Louisville, KY 40299 USA
+1 502-499-4976 fax