To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Solar Drainback and variable speed pumps
Finishing up a small drainback system and considering using the Taco VT solar series pumps. I have a 20 ft head, and that includes a 20% allowance for extra friction, and have used 1" supply and return. I am concerned that using the 009 at 35 ft head would "cool" my single panel during the initial 3 minute start up. I've also thought of using a smaller VT, like the 008 in series with a 007 booster in order to have less velocity at start up. The 007 dropping out after 3 minutes. Or to confuse matters, should I use a Grundfos Alpha pump in series with a 15-42 as booster and rely on pressure rather than temperature delta T? I have on hand a Goldline controller and realize I won't use it if I go w/the Taco VT series. But couldn't I use the Goldline with a Taco VDT? Any suggestions appreciated!