Retrofit SWCG on 1.5" Questions

[mzuri]

Hi All,
Noob questions. I have inherited this 1.5" pipe system and planning a retrofit Hayward SWCG which is a 2" system with a Pro-logic PL4 control panel . My pump pad system and planned SWCG insertion into the return is shown.

Questions:
1. Does this look right?
2. Flow sensor plumbed before cell?
3. Do I use this order to connect: Existing 1.5" PVC- (reducer 1.5" to 2) - Flow Valve - (2' to 2" Union) - Hayward T15 - (2"to 1.5" Union) - Existing 1.5" PVC
4. Part numbers for the unions?
5. I guess I wouldn't achieve much better flow (expense: performance ratio) replacing the elbows with sweep elbows?

Apologies if this has already been covered before
Thanks!

 

[Divin Dave]

Hey Mzuri,
Looks like you know what you need to do, and yes, the flow sensor goes in front of the cell.
No clue what P/N's are for a 1.5 - 2 inch union. Not sure there is any such thing, but google may be your friend. If not, you'll have to do >>>> 1.5 - 2 inch PVC adapter>>>> a short 2 inch pvc,>>> 2 inch union>>>>CELL >>>>2 union>>>>short 2 pvc >>>>,2 - 1.5 adapter.

And sweeps would not gain you anything of any significance.

 

[mzuri]

Hey Mzuri,
Looks like you know what you need to do, and yes, the flow sensor goes in front of the cell.
No clue what P/N's are for a 1.5 - 2 inch union. Not sure there is any such thing, but google may be your friend. If not, you'll have to do >>>> 1.5 - 2 inch PVC adapter>>>> a short 2 inch pvc,>>> 2 inch union>>>>CELL >>>>2 union>>>>short 2 pvc >>>>,2 - 1.5 adapter.

And sweeps would not gain you anything of any significance.

Thank you Divin Dave!
Looking at my home depot 2" unions they don't fit the cell and think only proprietary Hayward GLX-CELL unions can be used and interface them to the cell and get a dummy cell for winter. Interestingly here https://hayward-pool-assets.com/ass...f/manuals/AquaRite-AQR-Owner.pdf?fromCDN=true on Page 11 talks about having at least 12" before the flow switch and even talks about ' If the switch is plumbed after the cell, the cell can be counted as the 12" (25cm) of straight pipe. ' a situation I might have to adapt for my limited length.

Finally, I presume the cells or control boards do not need protection from the elements as they are weatherproofed?

 

[Divin Dave]

Mzuri,
You can indeed put the flow switch after the cell if you want to. The reason for that 12 inch is so the switch can sense an accurate amount of water flow thats required for the cell to work. You can get by without any problem if you dont have the whole 12 inches.

And I think you are right about the proprietary thread size on the unions.

You dont need anything special to protect the cells or controls from the weather. They are weatherproof.

 

[Pool_Medic]

Go to your local pool store and pick up two 2”-1.5” reducer bushings.

 

[mzuri]

Go to your local pool store and pick up two 2”-1.5” reducer bushings.

Will do. Thank you all!!