We run 15's and so far so good, I might try the 02's at some later date but for now all is well.
The temp. here this morning was around 20 degrees, the coldest it's been all yr.
Our first job was a empty house , we dual wanded it of course, and the temp held at about 200 to 210 degrees.
We ran the pump at 600PSI and the RPM's at 17. I was very satisfied with the temp. Especially since the wands were almost always on.
I don't know how some guys here claim they can maintain 250- 270 degrees dual wanding, it is impossible to do it under the conditions I just mentioned unless your fresh water tank is 170 degrees or hotter, and even at that I doubt it could be done.
The heat exchangers in the V or
AT are better then average, but neither can keep up that hot of temp. dual wanding unless your PSI is around 50
Forget the no drip ck. valves they don't exist yet. The one's Greenie sells are good for a short while, then the heat eats them up and they leak again. I know Jeff is working on the problem and I'm sure he will get taken care of.
I to hate the dripping water all over the wood floors, can't wait for the right ck. valves.
-Bruce