Suggestion where to tap for Chemical Injection (LC + Acid)

[fmartine]

Setting up to add Chemical Injection into my system for LC + Acid. Here is a picture of my current plumbing + drawing I drew up. The circled area in Blue is where I plan to add the injection points, however looking to get suggestions based on my plumbing and those experienced in the matter.

Also can someone explain that blue section. I would think that it is a Heater and Chlorinator bypass, however with the valve located where it's at it is really a 50%/50% split (Heater/Chlorinator + Pass through) OR a 100% Heater + Chlorinator path.

 

[mas985]

I would only inject into the pool and not the spa or risk over chlorination/acid.

As for that pipe, my guess would be a bypass. However, when fully on, water will take the path of least resistance and most of the flow rate will go through the bypass.

 

[Bama Rambler]

Can you get a few pictures of the plumbing at different angles and post them?
It would help us figure out what that line does.

 

[fmartine]

Bama Rambler, I'll follow up with some pics if not today tomorrow when better light. I did provide a 2d image I made up, if it helps.

mas985, my spa spills-over into the pool, however I hear ya b/c if the LC/Acid are being injected and the spa mode/similiar is set it will only hit the spa. I plan to automate via Aqualink however I maybe able to add some logic to protect as best I could under those situations.

 

[fmartine]

Had these on my phone, not sure if provide a better perspective

 

[fmartine]

Thanks everyone. I will be removing that section in Blue and I will remove the Chlorinator and replace it with the injection points for LC and Acid. Considering adding the ability to add a Flow Switch post the install prior to the injection points so will be plumbed in. So far I am running Injection of LC and Acid @ 30oz of LC and 0.27oz of Acid per dose