Intelliflo VSF with Solartouch - Problem with Schedules
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Posted

Hello,

I recently had an Intelliflo VSF pump and a Solartouch solar heat controller installed for my pool (these replaced an existing pump and solar controller). I think everything is now setup and working almost as I want it to work, but I'm having a problem with it obeying the schedules I have when the Solartouch takes over control. I also have an MX-8 pool cleaner, and I'd like the system to run at a higher RPM to properly operate the cleaner for the last hour of every day.

Right now I have the system set to run:
Program 1 - 10am-4pm - 1500 RPM (filtering)
Program 2 - 4:01pm - 5pm - 3200 RPM (cleaning/skimming)

EXT Program 4 - 3100 RPM (Solar Hold)

The problem is that when the Solar Hold ends, while it is in the Solar On period, it defaults to running EXT Program 2 (which I currently have set to 1500 RPM). In this case, if the solar heat is on between 4pm and 5pm, I would not get my higher RPM cleaning period. Is there any way to use the Solar Hold feature to get the water up to the solar collectors on the roof but then go back to the standard programming after that?

I was also thinking - would it be better to run the pump in a set flow mode? My thinking is that when the solar valve opens, the pump would automatically increase the RPM as necessary to maintain the GPM and get the water to the roof, and then it would spool back down once it was no longer needed. Is this true?

Thanks,
Luke

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Richard's picture
Tech, Pentair
You will need to change the
Richard's picture
Tech, Pentair
Posted

You will need to change the program 2 (ext control) to a higher speed to maintain a water flow that will be enough to send water into the collectors. Unfortunately you cannot have the valve open automatically during solar hold mode. I would prefer to have the pump controlled in rpm vs gpm when using solar.

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Richard, so no matter what if
Posted

Richard, so no matter what if the Solartouch is controlling the pump, while it is in "Solar On", the pump will run EXT Program 2? Regardless of whatever schedules it may have?

If this is the case, I was thinking maybe I could avoid controlling the pump with the Solartouch all together by using gpm instead of rpm. If I set the pump to a flow of 40GPM, that would be enough to feed my solar collectors. The pump would run at a low RPM while the solar is off and it would automatically spool up to a higher RPM when the solar kicks on to maintain the 40 GPM flow rate. I tested this and it seems to work.

Are there problems with doing it this way? What is the advantage of using the Solartouch to control the pump with EXT Program 2? This seems very limiting.

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