I am in the market for a Salt Water Chlorinator and have a few questions about the DIG-220. My choices are narrowed to the Autopilot, Intellichlor and Aqua Rite.
I has been leaning toward the Intellichlor because it seems to be the simplest to install, although the replacement cells are more expensive. That could be an advantage in that any system improvements would be realized without a re-installation. Also when it breaks, you can be pretty sure what you need to replace. I also like the simple interface. I am concerned about the problems with the salt sensor that some have had.
Many on here seem to lean toward the Autopilot. It appears to be a bit more complex to install, but that is probably because the manual leaves some unanswered questions.
1. If I purchase the model with the smaller cell for my 20,000 gal pool, when the cell needs replaced, can I replace it with any of the three sizes? Or does the control box only work with the size it's sold with?
you can use any of the cell sizes available. piping size etc are compatible
2. What are the dimensions of the control box?
21 x 12 x 9
3. Does the contol box need to be protected from the sun and rain?
i would say so. there are eletrical wires coming out of the bottom and a gap in the top in my soft touch that i wouldn't want exposed to water. can't speak to the sun issue
4. Does the unit wire into an existing time so that it switches on and off in parallel with a single speed pool pump? It appears so by the wiring diagram, but if that is the case, how does the control box clock retain the correct time
i believe the digital has it's own timer that can control pump etc. my soft touch i believe, does not. i have an intermatic timer that controls my pump, heater and autopilot. the timer switches the heater and poolpilot off first, then between 1 and 12 minutes later, switches off the pool pump. it has a switch that i can set between those times. the timer continues to run so it does not lose any time. the clock on the timer doesn't stop..the switch in the timer goes off, but i have a secondary switch in a relay box that the pump runs to. purpose of this is so my heater is turned off 12 minutes before before the pump so it doesn't potentially melt my pumps. this was an aftermarket custom solution and likely not what you're looking for but, information is power
i'm assuming you believe it difficult to install relative to the wiring of it, not the plumbing? the plumbing is simple as can be to plumb it in. 2 features i really like that others may not have are: temperature compensation (it self adjusts output of chlorine when the water temp is colder or warmer. much more efficient use of the chlorine output. you barely need any when the weather is cold for example at start of the season if you live in a climate subject to major temp changes like i am. and it has a check valve in it for the flow control of your water.
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