Oasis pump replacement

[Jim]

With time running out, mostly Trish's patience with my sidestepping this issue, I decided to finish the summer loop replacement and get it behind me.

So a couple of things for the next guy/gal.

• I didn't clamp the main hose like I should have, so I lost a bit of fluid in the process. Well, quite a bit of fluid, but it's all good. So as a note to others, clamp the hose, you'll be happier if you do.
• When I pulled the hoses off the Oasis pump, it fit perfectly on the US Solar pump, so no modification necessary. It's been several years since I bought the US Solar pumps, so apparently (at that time anyway) they had built them as direct replacements for the Oasis pumps.
• After I installed the new pump, I topped off the hydronic fluid storage tank and turned on the manual pump switch. I let that run for about 30 minutes to flush out any air in the system. The fluid level in the tank dropped about an inch, so I topped it off.
• After I turned the manual pump switch off, I crawled back in to check for leaks, and the summer loop was running. With the manual switch off, and no call for DHW, it shouldn't be running, so wasn't sure what that was about.
• I crawled back out, turned the Oasis off, and then turned it back on. I turned on the AC 1 and the burner, and let them do their thing. When the burner turned off, I crawled back in to visit with my summer loop pump, and it had obediently shut itself off. My guess is the Oasis control board, or a sensor somewhere, had to be reset for the system to gather its wits together. So if you change a pump, you may want to turn the Oasis off and then back on.

So, it appears we have successfully replaced the summer loop pump.