Hello. I am in the process of pool construction and need to connect the equipment. (pump, filter, etc) However, I'm confused over the lines that the pool contractor ran from the pool and spa to the equipment. I'm sure that this is due to my ignorance, but I'm trying to figure out how best to connect the plumbing.
There are a total of 8 lines from the pool and spa as follows:
1.) Pool Main drain
4.) Vac Line
5.) Spa Main drain
6.) Pool Return
7.) Spa Air Flow
8.) Spa Jet
I'm uncertain about the use of two of these lines - Vac Line and Spa Air flow. I suspect that the spa air flow will bring air from a pipe near the spa and add this air to the spa jet return lines. Is this correct?
If so, how will these lines be connected? Should there be 3 port valve to connect air flow and jet return pipes? Also, I was planning to place a check valve on the return side of the pump to prevent back flow.
Secondly, where would the vac line be connected to the pool? There are connections directly beneath each of the two Skimmers in the pool. I suspect that the vac line may be connected here to allow the connection of vacuum device. If so, I would then connect the vac line to the input side of the pump but use a 3 way port to connect the main drain and skimmer lines as well.
Does this sound correct? Thanks in advance for your advice.