So the outlet ports are fed by either hot or cold, but not both at the same time? This is what i wondered.
I assume this is to feed two reels.Is this the same plumbing you had before you had the idea of a heater?
What i'm asking here is does one pump feed two poles okay when for instance one is doing ups the other downs?
Your correct one pump feeding two pole been like that 7yrs or more, we always seemed to have one dominant brush. But since using gardeners brushes with smaller jets we dont get that problem.
The inlet top left is blanked. I'm pushing the water in to the valve the wrong way with the red or blue pipe if both are turned of no water gets to the 4 way valve. So turning on the blue or red gives flow to the the valve.
I did this so I can chose hot or cold by opening just one valve.
So all I have to do is turn on the 2 far right, and then chose hot or cold.
Roy