Installing your Del ozonator

Step 1: Mounting your Del ozonator

Ozonators are normally installed underneath the spa cabinet, however, it may be necessary to install it near the equipment of an in ground spa, on the wall of a spa room, or in a dry place under your deck. Good air flow around the ozonator is important and it should be mounted firmly.

Many instruction manuals state that an ozonator should be installed above the water line to prevent water from back-flowing into the unit. This is usually not possible, so check valves are included and should be used regardless of where you mount it. A Hartford Loop is also recommended to prevent water from getting into the unit. See below for more details.

Step 2: Connecting the Del ozone tubing to your spa

Is your spa ozone ready?
Most spas that are ozone ready will have a tiny jet (often near the bottom of the spa) that is pre-plumbed for an ozonator.

There is a water port and an air port on most spa jets.  Even if you didn't elect to buy an ozonator with your spa, the water port will usually be plumbed and water will flow through the jet when your main pump is on. The air port will either be capped off or clear tubing will be connected with the end hanging conveniently in the equipment area ready to connect to an ozonator. If you are fortunate to have an ozone jet, connecting the clear tubing will only take a couple of minutes.

Some spas come ozone ready with an ozone jet plumbed and a convenient place to cut the water line. In these instances, refer to option a below and install an ozone injector on the water line.

If your spa is not ozone ready, use only 1 of the following ways to connect the ozone tubing: Preferred methods are 1, 4, 3, 2 in that order in case you have a choice. All methods may not be feasible on all spa's
 

Option 1: Install an ozone injector on a JET water line An easy and effective way to hook up the ozone line is to use an ozone injector. Cut the water line leading to a jet (choose a jet near the bottom of your spa if possible) and attach the injector with clamps. Then connect the ozone line to the barbed fitting on the injector. If your spa has looped jetting (all jets are on a continuous circuit), use a bypass assembly as in option 4 below.

Option 2: Connect directly to the air port of a jet If you can access an individual jet, you can plumb it directly to the air orifice of the jet. Select a jet that is closest to the bottom of the spa for maximum contact with spa water. Some jets are fed by a manifold and have a separate air line to each jet, while other spas use looped jetting. If your jet is fed with a manifold, cut the air line off a few inches away from the jet. Then cut the same line off at the venturi air manifold and plug or cap this line at the manifold. Cut the line right at the air manifold because you don't want to have excess line hanging. (If water back-flows up the venturi system and settles in this dead end line, it may become a breeding ground for bacteria.) If your spa has looped jetting, your jet will have air going in one side and out the other side to the next jet. Cut this jet out of the air loop and then reconnect the loop with 2 couplers and a length of flexible hose so you bypass the air on the jet you plan to use. Connect the ozone tubing to one side of the jet and plug or cap the other side, as close as possible to the jet.

Adapter fittings may be necessary to connect to the jet.

Option 4: Install an ozone injector on your MAIN plumbing line If your spa is filled with foam insulation and you can't access an individual jet or jet line, install an ozone injector (built into a manifold) on your main plumbing line. This is the large 1-1/2" I.D. (1-7/8" O.D.) or 2" I.D. (2-3/8" O.D.) plumbing. When you place an ozone injector on the main plumbing line, you need to plumb in a bypass (bypass = manifold) so you don't add strain to your pump and drastically reduce the jet pressure when your pump is on high speed. The manifold allows the high pressure to bypass the injector. You can purchase an injector with a by-pass already plumbed together (called a manifold - see our parts page) or you can buy the separate pieces and assemble it yourself. The ozone injector w/manifold should be placed after your pump, heater and filter when possible. If you do not place it after your equipment, you may not have sufficient venturi pressure and the concentrated ozone may damage your equipment over time.

Step 3: Installing the check valve and creating a Hartford Loop

A check valve is provided with most ozonators to prevent water from back-flowing up the ozone line and getting into the ozonator. After you connect the ozone line to your spa, cut the tubing at about 6". Then reconnect the ozone line with a barbed check valve.

If the check valve is not labeled with the direction of the airflow, blow into the check valve. Connect the end of the check valve that you can blow into, to the line that leads to the ozonator. Connect the end that you can't blow into, to the line that leads to the spa. Air must be able to travel from the ozonator to the spa, but water should be prevented from flowing from the spa to the ozonator.

A second line of defense to prevent water from getting into an ozonator is to create a Hartford Loop. Creating a Hartford Loop simply means to loop the ozone tubing up as high as you can before you connect to the ozonator. The loop needs to go above the water line for optimal effect.

Step 4: Plugging in or hard wiring your Del ozonator

Many spa manufacturers make connecting the electrical very easy by pre-wiring a plug for your ozonator on the equipment panel. Look for a female plug-in that is labeled for an ozonator. The most common plugs for ozonators are shown below although all models do not offer all plugs. Please see individual item descriptions for more details.

If your spa has a plug-in to accept an ozonator, you need to determine the voltage that the plug is wired for. Most ozone plugs are wired for 110 Volts even if the main power going to the spa is 220 Volts. Check your spa owners manual if you are unsure or consult the spa manufacturer.

Warning: Have a local spa professional or an electrician do the installation for you unless you are experienced at electrical work. Water and electricity do not mix and a mistake could be fatal! OzoneOutlet will not be held liable for any injuries that may result from the incorrect installation or troubleshooting of any electrical components.

If you do not have an ozone plug, cut the plug off and hard wire it to your spa system. A 110 Volt ozonator can be hard wired to a 110 Volt or 220 Volt spa. Since 110 Volt ozonators are more common, they are less expensive and we recommend you buy a 110 Volt model if you are hardwiring. If your spa has an electronic circuit board with terminals ready to connect to, please check with your owners manual or spa manufacturer for the required voltage.

Ideally, the ozonator should be wired so it comes on when your low speed pump is on. If you wire to the low speed pump circuit or your spa timer, the ozonator will only be on when it needs to be, instead of 24 hours a day which will drastically the life expectancy of your unit..

Step 5: Set the timer on your spa

If your spa has a timed filtration cycle, set the timer so your pump filters a minimum of 3 hours in every 12 hour period. Ozone will only be getting into your spa when the pump is filtering and the longer you filter every day, the more effective the ozone purification process will be! Congratulations, your install is complete! You can now use approximately 75% less chlorine or bromine and cut down on many other chemicals.