Should SWCG system be powered by filter/pump relay even if using automation?

dailygenesis

Gold Supporter
Nov 19, 2022
243
Oklahoma City
Pool Size
21000
Surface
Plaster
Chlorine
Salt Water Generator
We just had a Hayward Aquarite Salt System installed and we have a Hayward Ecommand controller. The installer wired the power for the Aquarite to the filter/pump relay such that the Aquarite system as a whole only receives power if the pump is running. He indicated this is how they wire all such systems and that it is better for the system to not receive power continuously when not in operation.

I have looked around the forum and I do understand that wiring this way is typical and even required in standalone installations, but I am wondering if this is the way it should work when using the Ecommand. The Ecommand has a separate control cable that connects to the Aquarite and controls it's operation, including telling it to not operate if the pump isn't running. So, it seems unnecessary and maybe detrimental to shut the whole system down every time the pump goes off and power it back up every time the pump comes on.

Also, the Ecommand issues a "Check System" error whenever the Aquarite power is off. The error says it can't communicate with the chlorinator. If it's just an annoying error, I can probably live with that, but I wanted to make sure there is no other downside to leaving it this way.

Interestingly, I have noted a bit of confusion in the installation manuals on this issue. The installation manual that can be found online does have separate diagrams for standalone installation vs. working with Hayward controller and showing that when installed standalone it should be wired to the pump relay but when installed with a controller it should receive power continuously. BUT, the paper manual that came with the unit differs in some ways from this online version and does NOT include this separate diagram. The manual version number that is printed is higher than the online version number. So, I don't know if they intentionally took this out or if it is a mistake. I guess I could call Hayward, but the people that answer the phones there would probably just look at whichever manual they have at their disposal.

Any help is appreciated. I guess I'm trying to determine 1) is there any danger in operating it this way presently, 2) should i have the installer come back out and rewire this (or attempt to rewire it myself)
 
. The Ecommand has a separate control cable that connects to the Aquarite and controls it's operation, including telling it to not operate if the pump isn't running.

The ECommand does not know if the pump is running. It is not as smart as you think it is.

The ECommand only knows if the filter pump relay is on which will rumor that there may be water flow. It has no flow switch to know there is water flow.

The control cable to the Aquarite is only used to set the generation % and diagnostic messages.

The Aquarite will generate anytime it has power and it’s flow switch is closed.

The Aquarite should be connected to the filter pump relay so it is not powered and does not try and generate with no water flow and if it’s flow switch is stuck closed, that does happen.
 
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We just had a Hayward Aquarite Salt System installed and we have a Hayward Ecommand controller. The installer wired the power for the Aquarite to the filter/pump relay such that the Aquarite system as a whole only receives power if the pump is running. He indicated this is how they wire all such systems and that it is better for the system to not receive power continuously when not in operation.

I have looked around the forum and I do understand that wiring this way is typical and even required in standalone installations, but I am wondering if this is the way it should work when using the Ecommand. The Ecommand has a separate control cable that connects to the Aquarite and controls it's operation, including telling it to not operate if the pump isn't running. So, it seems unnecessary and maybe detrimental to shut the whole system down every time the pump goes off and power it back up every time the pump comes on.

Also, the Ecommand issues a "Check System" error whenever the Aquarite power is off. The error says it can't communicate with the chlorinator. If it's just an annoying error, I can probably live with that, but I wanted to make sure there is no other downside to leaving it this way.

Interestingly, I have noted a bit of confusion in the installation manuals on this issue. The installation manual that can be found online does have separate diagrams for standalone installation vs. working with Hayward controller and showing that when installed standalone it should be wired to the pump relay but when installed with a controller it should receive power continuously. BUT, the paper manual that came with the unit differs in some ways from this online version and does NOT include this separate diagram. The manual version number that is printed is higher than the online version number. So, I don't know if they intentionally took this out or if it is a mistake. I guess I could call Hayward, but the people that answer the phones there would probably just look at whichever manual they have at their disposal.

Any help is appreciated. I guess I'm trying to determine 1) is there any danger in operating it this way presently, 2) should i have the installer come back out and rewire this (or attempt to rewire it myself)
If you run the pump 24x7 at low speed it should solve your error message problem.
 
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The control cable to the Aquarite is only used to set the generation % and diagnostic messages.

The Aquarite will generate anytime it has power and it’s flow switch is closed.
Ah, ok so you are saying that the Ecommand doesn't even send any type of "on/off" signal to the Aquarite to tell it when to run and when not to run? If so, then I completely understand the need to run power as it is set up currently. I guess that is just surprising to me. I would assume it would send some type of generate/don't generate signal to correspond with when the filter pump is running in the automation.
 
If you run the pump 24x7 at low speed it should solve your error message problem.
That makes sense and I have seen several others advocating for running the pump 24/7 at low speeds. I am considering this. My biggest concerns are whether this will allow enough skimming and water mixing action. Any thoughts?
 
Schedule the pump to run for as many hours as necessary at a higher speed for skimming.
 
Skimming 24x7 is always better than skimming less. 😉

Figure out what rpm you need to set the pump to run so that skimming is good enough and let it run at that speed for however long you want to skim. If you like skimming 24x7 leave it there. If you only need 8 hours of skimming let it run for 8 hours and drop the speed for the other 16 hours.

My pool skims very well at 2000rpm, almost too well. Yours will be different.
 
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