Cold water in spa

So close the valve in front of the SPA FOUNTAIN pipe.

What automation panel do you have?
 
There is no check valve on the pipe labeled POOL RETURN and my guess is in spa mode a siphon forms sucking pool water up the POOL RETURN pipe and then down the SPA FOUNTAIN pipe which I suspect is the center pipe in the spa.

You can turn the diverter valve above POOL RETURN 90 degrees counter clockwise to close the SPA FOUNTAIN and see if that stops the cold water.

Then we can discuss using the SPILLOVER feature in your automation to maintain the spa water.
+1 this.

It's actually fairly simple. The wall returns in your pool are higher than the floor "spa fountain" so the siphon forms in the absence of pool-mode generated flow.

I echo what Allen said. Rotate that 3-way anti-clockwise 90°. This will stop the water entering your spa. If you don't want to have to rotate this every time you use the spa, add a check valve to "pool return".

Or you can close it and leave it there forever. And use Spillover as Allen said.
 
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So close the valve in front of the SPA FOUNTAIN pipe.

What automation panel do you have?
We will close the valve - you had said to turn it 90 degrees counter clockwise, correct? Brad said to turn it clockwise so I’m wanting to be sure which way. Sorry I’m so new to all of this!
We have the Hayward OmniLogic app for automation. What spillover option do you mean? This is the spa spillover looks like.
 

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We will close the valve - you had said to turn it 90 degrees counter clockwise, correct? Brad said to turn it clockwise so I’m wanting to be sure which way. Sorry I’m so new to all of this!

Jim answered that.

We have the Hayward OmniLogic app for automation. What spillover option do you mean? This is the spa spillover looks like.

SPILLOVER mode sucks water from the pool and returns it to your spa which then spills over back to the pool. It gets chlorinated water into your spa instead of constantly running your fountain line.

From Hayward OmniLogic - Further Reading

See page 18 in OmniLogic Operation Manual.

See if you have the SPILLOVER button.

If not you need to fix your configuration as described in OnmiLogic Installation Manual. You need to use the Configuration Wizard. See page 33 and answer YES for...

Do you have Spillover? Select yes to this question if you have Spillover in your system. If yes is selected, choose the valves that will operate Spillover from the following screen.

Then you can set your programming to refresh the spa water twice a day and it will not become stagnant. You can run your spillover around 9AM and 1PM for 15 minutes to refresh the water at the start of the day and mid-afternoon.
 
Your other problem is that your SWG is not able to chlorinate your spa when it is being used.

If you have many people in your spa or use it for long periods of time you can use up all the chlorine the water started with and end up with unsanitary conditions.

Let me know when you want to discuss the fix which requires relocating where the SWG cell is installed.
 
Jim answered that.



SPILLOVER mode sucks water from the pool and returns it to your spa which then spills over back to the pool. It gets chlorinated water into your spa instead of constantly running your fountain line.

From Hayward OmniLogic - Further Reading

See page 18 in OmniLogic Operation Manual.

See if you have the SPILLOVER button.

If not you need to fix your configuration as described in OnmiLogic Installation Manual. You need to use the Configuration Wizard. See page 33 and answer YES for...

Do you have Spillover? Select yes to this question if you have Spillover in your system. If yes is selected, choose the valves that will operate Spillover from the following screen.

Then you can set your programming to refresh the spa water twice a day and it will not become stagnant. You can run your spillover around 9AM and 1PM for 15 minutes to refresh the water at the start of the day and mid-afternoon.
Thank you so much for such detailed explanation!
If this was your set up, would you rather install a check valve on the pool return to avoid the cold water or would you run the spillover and close the valve?
 
Your other problem is that your SWG is not able to chlorinate your spa when it is being used.

If you have many people in your spa or use it for long periods of time you can use up all the chlorine the water started with and end up with unsanitary conditions.

Let me know when you want to discuss the fix which requires relocating where the SWG cell is installed.
Yes, I would love to know where the salt cell should be installed. Hayward warranty came out today for an issue we had with flow sensor error messages and I asked him if everything was set up/ installed correctly and he said everything looked great. His solution to the cold water was that the valve inverter might be bad so he said to ask our PB to fix it.
 

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Thank you so much for such detailed explanation!
If this was your set up, would you rather install a check valve on the pool return to avoid the cold water or would you run the spillover and close the valve?
Close the valve and run the spillover.
 
Yes, I would love to know where the salt cell should be installed. Hayward warranty came out today for an issue we had with flow sensor error messages and I asked him if everything was set up/ installed correctly and he said everything looked great. His solution to the cold water was that the valve inverter might be bad so he said to ask our PB to fix it.
Either he does not understand the OMNI PL capabilities or he did not want to put any critical thinking into how your system can operate better. He is not going to criticize the Pool Builder's work. He sounds like a typical Pool Tech.

Your cell circled in red and its flow switch needs to be moved to between the heater outlet and the return valve. Have your builders plumber relocate it. It is maybe a 2 hour job.

A straight pipe is put in where the cell and flow switch are and he may need to be a bit creative to fit the length of the flow switch and cell in the blue are.

49F2EFB4-676D-43C9-9CEA-3086BD2C2BD5.jpeg
Once the cell is moved you set separate chlorinator % for each body of water - POOL & SPA.

What is the chlorinator % set for your POOL?

Turn your spa on and see if there is a chlorinator % set for the spa?
 

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Thank you so much for such detailed explanation!
If this was your set up, would you rather install a check valve on the pool return to avoid the cold water or would you run the spillover and close the valve?
I'd eventually do both. You already have the plumbing. Running an Overflow schedule a few times a day is better than running bypass all the time for controlling pH rise from aeration. But, having the bypass you can open on the fly or tailor adjust overflow as wanted for a period is handy. When I add chemicals, I like to treat the spa and pool as one unit for the mix time and just open the bypass during. Probably same difference, all water returning to pool eventually via Overflow mode, or shared returns to pool and spa with bypass, but it's easy enough to just bump a valve and maybe a bit better whole unit circulation. My check valve is on the spa makeup return line instead of the pool return pipe, but I guess I never thought of the possibility of a siphon between the two but see it now given the head a full, elevated, spa would create. Your spa arrangement is just reversed.
 
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Either he does not understand the OMNI PL capabilities or he did not want to put any critical thinking into how your system can operate better. He is not going to criticize the Pool Builder's work. He sounds like a typical Pool Tech.

Your cell circled in red and its flow switch needs to be moved to between the heater outlet and the return valve. Have your builders plumber relocate it. It is maybe a 2 hour job.

A straight pipe is put in where the cell and flow switch are and he may need to be a bit creative to fit the length of the flow switch and cell in the blue are.

View attachment 474733
Once the cell is moved you set separate chlorinator % for each body of water - POOL & SPA.

What is the chlorinator % set for your POOL?

Turn your spa on and see if there is a chlorinator % set for the spa?
We have not added salt to pool yet so the cell is not plugged in to the power. The PB got us the salt but told us we had to add it ourselves. The temps are still in the 40/50s but warming up pretty soon so we are adding the salt this weekend probably. After that we have to set the % etc. If you have any tips for that we welcome any! :)
 
Brad said to turn it clockwise so I’m wanting to be sure which way.
I'm sorry. I meant anticlockwise, which is why I said I echoed Allen. But if I'm gonna offer help, I should be sure I don't mix it up when I type it in.

Allen's advice for the rest of the thread is also what I would do. And as Russel said, there's no reason to remove the "spa fountain". Just leave it there and you can open it when you treat the water or to more quickly "clarify" and overflow your spa if it gets overused.

But use the spillover feature in your automation. It's a better way to regulate sanitizer and pH together.
 
22k
I just added the details to my signature. Thank you so much!
In Texas your pool will use 3-4ppm of FC daily by the summertime. That is what you will need to generate. You may need 2ppm or less in the winter and it will increase and decrease as the seasons change. So your SWG output will require some adjustment every 6 weeks or so.

In your 22,000 gallon pool with your 40K cell putting out 1.4lbs of daily chlorine you will get the following outputs:

  • 24 hours/day @ 50% gives 3.8ppm of FC
  • 16 hours/day @75% gives 3.8 ppm of FC
  • 24 hours/day @ 35% gives 2.7 ppm of FC
For best cell life you dont want to run your cell more than 80% continuously. So you are looking at running your pump 16 to 24 hours per day. Might as well keep it simple and run your pump 24 hours per day at low speeds to always be generating some chlorine. And your SWG % will vary between 30% and about 60% depending on the season.

This time of year I would start with 35% and test your FC daily and see what your daily FC change is. You then adjust your % until you get little days to day FC change.

Have you downloaded PoolMath ? Set it up for your pool and find EFFECTS OF ADDING and see how it does these calculations for you.
 
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In Texas your pool will use 3-4ppm of FC daily by the summertime. That is what you will need to generate. You may need 2ppm or less in the winter and it will increase and decrease as the seasons change. So your SWG output will require some adjustment every 6 weeks or so.

In your 22,000 gallon pool with your 40K cell putting out 1.4lbs of daily chlorine you will get the following outputs:

  • 24 hours/day @ 50% gives 3.8ppm of FC
  • 16 hours/day @75% gives 3.8 ppm of FC
  • 24 hours/day @ 35% gives 2.7 ppm of FC
For best cell life you dont want to run your cell more than 80% continuously. So you are looking at running your pump 16 to 24 hours per day. Might as well keep it simple and run your pump 24 hours per day at low speeds to always be generating some chlorine. And your SWG % will vary between 30% and about 60% depending on the season.

This time of year I would start with 35% and test your FC daily and see what your daily FC change is. You then adjust your % until you get little days to day FC change.

Have you downloaded PoolMath ? Set it up for your pool and find EFFECTS OF ADDING and see how it does these calculations for you.
You have been so helpful! I truly appreciate everything you’ve shared with me and all your guidance! Today we tried the spa with the valve closed and the heater warmed the water by 33 degrees in one hour - as opposed to 1.5 hours it was taking before! And while using it it only kicked on a few times. We are so grateful for your help!

I will look into getting the spillover feature going this week. If I get stuck I will reach out. Thank you!
 
Jim answered that.



SPILLOVER mode sucks water from the pool and returns it to your spa which then spills over back to the pool. It gets chlorinated water into your spa instead of constantly running your fountain line.

From Hayward OmniLogic - Further Reading

See page 18 in OmniLogic Operation Manual.

See if you have the SPILLOVER button.

If not you need to fix your configuration as described in OnmiLogic Installation Manual. You need to use the Configuration Wizard. See page 33 and answer YES for...

Do you have Spillover? Select yes to this question if you have Spillover in your system. If yes is selected, choose the valves that will operate Spillover from the following screen.

Then you can set your programming to refresh the spa water twice a day and it will not become stagnant. You can run your spillover around 9AM and 1PM for 15 minutes to refresh the water at the start of the day and mid-afternoon.
Hi Allen,
I finally got our PB to come take a look at our valve, and he did replace the inverter to see if that would prevent the cold water from leaking in while in Spa mode. We tried using it last night to test it, and for a few minutes the fountain line does not have any cold water coming in, but then it starts and it won't stop until we manually close that valve. So we let the PB know and he said we could either install an actuator in place of the manual valve, at my expense, or I could close it permanently. When he came out he adjusted to actuator that controls the spa jets, so now they are slightly open when in pool mode. I asked him if we could just use the programming of Spillover like you described above, and he said we don't need that. That with the spa jets slightly opened the spa is getting the same spillover effect. What is your opinion?

If you think we could/should still program the Spillover mode, what valve do I choose in the programming when doing so?
 

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