My son and his family have recently bought an Atlanta house built in the 80s with an 20K IG pool. It is a pool/spa combination with spillover. The 1 1/2HP filter pump is not working; the sand filter is fairly new; the Polaris booster pump is old but works; the spa blower works; and, the heater is an old Raypak Gemini that I don't yet know whether or not it works.
I have purchased on the Internet and just received, but not yet installed (plan to start on Monday):
One Hayward 2 speed 1 1/2 HP super pump
Prologic Controller P-PL-4 with SWG, RF base for wireless remote, handheld remote, and a kit to convert the 3rd valve relay to a fifth high voltage relay
Two 3 way actuator/valve combos to control the positions of the pool/spa supply and returns
The existing PVC piping is like spagetti. In my opinion has many more elbows and turns than are necessary. I plan on simplifying some of that to reduce head losses.
I am not sure what to do about the heater. If it works, should I try to tie it in to the controller? If it doesn't, can anyone recommend a new one that is durable in a salt environment and that doesn't have a lot of built-in sophisticated controls since I would be using the PL-P-4 and not the heater to control the spa and pool temperatures.
I am a retired engineer and have had my own pool for more than 30 years, but I am far from an expert in pools. I am competent to do the required plumbing and electrical work. Any suggestions about the heater or other aspects of this project would be greatly appreciated.
The only other problem is a lot of scale buildup on the tiles at the waterline, especially below the spillover. Haven't tried to remove any of it yet, but I have read that it takes a lot of time and "elbow grease".
Thanks in advance for your help