Hi, I have a CMP POOL DEFENDER INLINE SACRIFICIAL ZINC ANODE. I am getting mixed opinions on where to install it on my equipment pad. My heater already has a zinc anode built in, so that takes place for one between filter and heater. I was told by pool store to install my CMP POOL DEFENDER before our pump. Does it matter if I install it before my pump or between my pump and filter?? Thank you!
Zinc anode placement help
- Thread starter mmesqc1578
- Start date
- Jul 21, 2013
- 53,275
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
What are you trying to protect?
If you electrically connect an anode to the metal you’re trying to protect, the corrosion caused by the electrolysis will attack the anode first. In a sense, the anode acts as a sacrifice to the more critical metal components. Zinc anodes have a more active voltage than other metals, therefore, it will erode instead of the other metals.
A zinc anode simply in the water flow will provide no protection.
Connect it to your autocover. It may protect it.
If you electrically connect an anode to the metal you’re trying to protect, the corrosion caused by the electrolysis will attack the anode first. In a sense, the anode acts as a sacrifice to the more critical metal components. Zinc anodes have a more active voltage than other metals, therefore, it will erode instead of the other metals.
A zinc anode simply in the water flow will provide no protection.
Connect it to your autocover. It may protect it.
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My understanding is that "the in-line zinc anode is attached to the bonding wire, thereby protecting all metal parts(heaters,lights,rails,etc.) from galvanic corrosion. Zinc anodes will sacrifice themselves and corrode before all other metals in the pool." To answer your question, I am trying to protect all the metal parts of the pool from galvanic corrosion.
- Jul 21, 2013
- 53,275
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
What metal parts are in your pool in contact with the water that need protection?
- Jul 21, 2013
- 53,275
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
That is why I said attach the anode to your autocover.
You have metal railings on your pool?
It is an inline anode. How do I attach to autocover? They are marine grade stainless steel. The railings are not in the pool, on the deck.
- Jul 21, 2013
- 53,275
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Return it to the pool store if you can and tell them you don't need an inline anode. It protects nothing you have and just transfers money from your wallet to the pool store.
If the railings are not in contact with the pool water the anode will not do anything for it.
If the railings are not in contact with the pool water the anode will not do anything for it.
I have an in-line anode that my PB installed. It’s between my pump and heater and connected to the bonding grid. It also is an acceptable bond for the water.
How does my pad look? The couplings before the heater were bc I thought needed inline anode to protect heater but then realized my heater has one built in. Should I attempt to remove them? Not even sure if possible at this point or worth the effort. Thoughts appreciated.
Attachments
- May 3, 2014
- 58,695
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
The Intellichlor flow switch may not be real happy with that check valve just before it. No need for that check valve. Intellichlor likes some straight pipe run before the flow switch, manual says 12 inches. As you have it set up it may take a few hundred rpm higher flow rate to get the flow switch to close.
- May 23, 2015
- 24,481
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
This is an incredibly inefficient layout -
If you move the 3-way valve and rotate it, you can eliminate at least 2 elbows. I would honestly have that entire section after the filter and heater redone. As @mknauss said, there shouldn’t even be a check valve behind the IC.
If you move the 3-way valve and rotate it, you can eliminate at least 2 elbows. I would honestly have that entire section after the filter and heater redone. As @mknauss said, there shouldn’t even be a check valve behind the IC.
Would you be able to upload a quick drawing of what you mean by move 3 way valve and rotate it? He was trying to put a heater bypass in system. Thanks. @JoyfulNoise
- May 23, 2015
- 24,481
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Eliminates 3 90deg elbows. If it’s too tight to squeeze it in, then use a sweep elbow on one of the heater connections to add room. 90 deg elbows can add several feet of head loss to plumbing setup.
@JoyfulNoise thank you! Is there a way to salvage my 3 way valves and unions at equipment? Or do I need to order all new ones?
- May 23, 2015
- 24,481
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
You can cut the pipes close to joint. I believe 2-1/2” pvc pipe can be glued around the outer diameter of the valve connectors. Also, you can find a pipe cutting tool online that will ream out the PVC from inside connection.
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@JoyfulNoise Do you see any benefit to putting a 3-way valve at the "T" you have drawn? Or is it overkill?
- May 23, 2015
- 24,481
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
If you have a spare valve then it’s fine. Normally you wouldn’t put a $100 valve in the place of a $5 tee but if it’s not being used then there’s no reason to waste it.
- Jul 21, 2013
- 53,275
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Save the 3-way valve so you can cannibalize it for parts when one of your other valves has a problem.