Autopilot Nano with PPC2 or PPC1

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
22,001
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
We recommend you get a SWG whose cell capacity is 2X your pool volume. For a 25K pool you need a 40+K cell. I would get a PPC3, 4 or 5 cell system

The Autopilot cells are:
  • PPC1 - 28,000 gallons
  • PPC2 - 32,000 gallons
  • PPC3 - 50,000 gallons
  • PPC4 - 60,000 gallons
  • PPC5 - 80,000 gallons
 

Heavenlytunes

Silver Supporter
Oct 25, 2020
66
Nassau, Long Island NY
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Autopilot Digital PPC1 (RC-35)
At this point I can't ask the PB to change it. That means I'll be $400 to $500 out pocket for a new one PPC2 or PPC3.
I still don't know the exact gallons I got.
I keep getting all different answer because of the freeform shape.
But let's just say is 20k to 25k would the PPC1 do the job at full setting?
Thanks in advance
 

setsailsoon

Gold Supporter
LifeTime Supporter
TFP Guide
Oct 25, 2015
3,778
Stuart/FL
Pool Size
12800
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-30 Plus
You can check this with Pool Math in the "effects of adding" menu from the top left button. If I plug in your 25K pool and set power to 100% it will need to run 7.75 hr to generate 2 ppm FC. See below. During hot sun FC demand can be 4 ppm. At that point you're running 15 plus hours. This is one reason TFP recommends sizing for 2x your pool size. For reference my unit is sized for 30K on a 12800 gal pool. I run 50% power for 6-10 hrs depending on the weather and swimmer load. I have a screen enclosure so my pool FC demand rarely goes over 3 ppm.

Will it work? Yes, at least to start with and if you go this route I'd make sure you have a VS pump so you won't have a huge power bill. All you need is enough flow to open the flow switch which is often half speed or less. As the cell ages you'll probably have to run 24 hr to keep up. How long does that take? Maybe a couple of years and this depends a lot on how much FC demand you actually have plus how well you manage your chemistry.

Why can't you ask the PB to change? Late changes because you change your mind are different from a PB that under-sized the equipment. He should have leverage with the supplier to be able to make the exchange at reasonable cost.

Chris

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Heavenlytunes

Silver Supporter
Oct 25, 2020
66
Nassau, Long Island NY
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Autopilot Digital PPC1 (RC-35)
You can check this with Pool Math in the "effects of adding" menu from the top left button. If I plug in your 25K pool and set power to 100% it will need to run 7.75 hr to generate 2 ppm FC. See below. During hot sun FC demand can be 4 ppm. At that point you're running 15 plus hours. This is one reason TFP recommends sizing for 2x your pool size. For reference my unit is sized for 30K on a 12800 gal pool. I run 50% power for 6-10 hrs depending on the weather and swimmer load. I have a screen enclosure so my pool FC demand rarely goes over 3 ppm.

Will it work? Yes, at least to start with and if you go this route I'd make sure you have a VS pump so you won't have a huge power bill. All you need is enough flow to open the flow switch which is often half speed or less. As the cell ages you'll probably have to run 24 hr to keep up. How long does that take? Maybe a couple of years and this depends a lot on how much FC demand you actually have plus how well you manage your chemistry.

Why can't you ask the PB to change? Late changes because you change your mind are different from a PB that under-sized the equipment. He should have leverage with the supplier to be able to make the exchange at reasonable cost.

Chris

View attachment 171786
Thank you Chris
 

Heavenlytunes

Silver Supporter
Oct 25, 2020
66
Nassau, Long Island NY
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Autopilot Digital PPC1 (RC-35)
You can check this with Pool Math in the "effects of adding" menu from the top left button. If I plug in your 25K pool and set power to 100% it will need to run 7.75 hr to generate 2 ppm FC. See below. During hot sun FC demand can be 4 ppm. At that point you're running 15 plus hours. This is one reason TFP recommends sizing for 2x your pool size. For reference my unit is sized for 30K on a 12800 gal pool. I run 50% power for 6-10 hrs depending on the weather and swimmer load. I have a screen enclosure so my pool FC demand rarely goes over 3 ppm.

Will it work? Yes, at least to start with and if you go this route I'd make sure you have a VS pump so you won't have a huge power bill. All you need is enough flow to open the flow switch which is often half speed or less. As the cell ages you'll probably have to run 24 hr to keep up. How long does that take? Maybe a couple of years and this depends a lot on how much FC demand you actually have plus how well you manage your chemistry.

Why can't you ask the PB to change? Late changes because you change your mind are different from a PB that under-sized the equipment. He should have leverage with the supplier to be able to make the exchange at reasonable cost.

Chris

View attachment 171786
Thank you Chris
 
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Heavenlytunes

Silver Supporter
Oct 25, 2020
66
Nassau, Long Island NY
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Autopilot Digital PPC1 (RC-35)
I recalculated using the pentair pool volume calculator and it looks like between 19k and 20k
Weird I have 15, 16 and 17ft width x 34ft.
I have a section with inside step/shallow and deep end 7ft
 

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Bperry

Gold Supporter
Aug 20, 2020
99
Knoxville, TN
I recalculated using the pentair pool volume calculator and it looks like between 19k and 20k
Weird I have 15, 16 and 17ft width x 34ft.
I have a section with inside step/shallow and deep end 7ft
for reference, I have a similar shaped pool that’s about 34ft by 16ft with an 8ft deep end and it’s about 27k gallons, but that calculator comes up with 22700 Gallons. i had a pool guy come out and measure the perimeter with a rolling “tape measure” and calculated it that way. He came up with 27k gallons and the chemical dosing has turned out really close to matching that. so be careful with those estimators.
 
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Heavenlytunes

Silver Supporter
Oct 25, 2020
66
Nassau, Long Island NY
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Autopilot Digital PPC1 (RC-35)
for reference, I have a similar shaped pool that’s about 34ft by 16ft with an 8ft deep end and it’s about 27k gallons, but that calculator comes up with 22700 Gallons. i had a pool guy come out and measure the perimeter with a rolling “tape measure” and calculated it that way. He came up with 27k gallons and the chemical dosing has turned out really close to matching that. so be careful with those estimators.
Thats what I don't understand. My PB called the manufacturer today and reconfirmed that the amount that pool holds is about 20k. With an 8ft x 4ft depth
 

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setsailsoon

Gold Supporter
LifeTime Supporter
TFP Guide
Oct 25, 2015
3,778
Stuart/FL
Pool Size
12800
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-30 Plus
As a double check make sure you have no algae with an OCLT then add 5 ppm liquid chlorine with the swg off based on what Pool Math calculates for a 20K pool. See how well it matches.
 
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