You will also need to figure out what cord you will need for your Del spa ozonator. Remove your spa control box cover. Check to see if your Control Box has a built in spot for an ozonator. In this case the control box is a Balboa VS501Z. On the back of the box lid is a schematic that shows where the ozonator should be. If you do not see a schematic or no longer have the owners manual contact the manufacturer of the control box to see if your control is wired for a spa ozonator.
Using the schematic I located the receptacle for the cord which ended up calling for an Amp Cord. There are other ways to wire your ozonator. Here is a link to the different types of <a href="http://www.inyopools.com/images/del_plug.jpg" target="_blank">cords for del spa ozonator</a>. The schematic also calls for a couple other wire changes since my spa was wired 240V. If you are changing wiring on your control box it is also a good idea to double check with the manufacturer of the control box or have an electrician look at your wiring to make sure it is wired correctly. Once you know which cord you want you can order your Del spa ozonator.
Once you receive your Del spa ozonator you will need to install it. The Del MCD-50 with a Amp cord is sold with loose wires. This is due to the fact that different spa control boxes are sold with different wire configurations. The Del MCD has a black active wire, white neutral wire, and green ground wire. I contacted Balboa to find out what the wire configuration was for the VS501Z Control Box. They stated the active was the top, skip the second, neutral was third, and ground was bottom.
The next step is to put together the ozone tubing, check valve, and injector. Check to see if your spa is "ozone ready" If it is not you will need to purchase an injector. Click here for all Del Ozonator Injectors. The Injector is important. It will properly draw the ozone from the ozonator into the Water Supply and then into your spa.
To mount the spa ozonator find a spot that is above the spa waterline. Often times this is not possible to mount above the waterline. We suggest you mount it as close to the waterline as possible. You should not mount the ozonator on the floor. If flooding does occur your ozonator will be damaged if it was mounted on the floor. The ozonator has two mounting holes that you can use either screws or bolts. I wanted my ozonator to be inside my spa so I had to jimmy a place to mount the ozonator.