Swimming Pool Plumbing and Light Niche Install
It is best to run my plumbing before I pour the footer around the pool wall. This way the pipe will be protected inside the pool footer. You can run the plumbing after you pour the footer, but I don’t think it is wise. The pipe has a greater chance of getting damaged if it sits on top of the footer. You will also have to take extra time to make sure the pool footer is fairly smooth and level to be able to put plumbing on top of it. The best way is to have the pool plumbing pipe inside the pool footer.
First you will need to install all the fittings into the pool wall. This includes all clean water returns and skimmers. Connect pvc pipe to them and run the pipe all the way back to where the pool equipment pad will be. I have found it important to run each return line all the way back to the equipment pad. Don’t just T the pipes together. This way you can control each return line with a ball valve at the equipment pad. If a leak in one of the return lines ever occurs in the future, you will also have the ability to just shut that line down and not have to dig it up to fix it.
The pools main drains should be plumbed at this time. It is the law according to the Virginia Graham Baker Act that you have two main drains. They must be plumbed together but be no closer that 3 feet apart. Check with your local, state, and federal laws for complete directions. You are responsible for following all law associated with the Virginia Graham Baker Act. The split drains are for safety. They prevent suction entrapment from happening.
Run pipe under the pool wall for the main drains. Then find the center of the deep end hopper and dig out an area for the main drains to sit. Connect the main drains to the pipe that is under the wall. Make sure to bury the pipe into the pools deep end sidewall dirt so that you will be able to grout over it in the future.
POOL LIGHT NICHE INSTALLATION
Next you will need to install the pool light niche. It will bolt into the pool wall cutout. Make sure to install the niche the right way up. If you install it upside down it will cause problems. After you have bolted the niche to the wall you can run the electrical conduit from the niche to where ever the electric supply will be. The pool light conduit must not be broken until it is at least 12 inches above the future pool water level. The actual light will be installed later. Be sure to tape off the grounding lug on the back of the light niche so that no concrete will get on it during the footer pour. Installing the conduit is best preformed by an electrician.