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Hot Water Problems, indirect fired Amtrol Heater
I bought my house in August of 09' I have a Amtrol Top feed 41 gallon indirect hot water maker. The guy who installed this orginally had 1" feeds/returns through a 1" Taco zone valve, & a 007 on the return, and the hot water was minimal at best.
(I also found out that we have very hard water where we are, and I dont have the money to install a water softner, so scale builds up on the coils of the heater/sensor.)
I moved the tank about 4' away from the boiler and installed a Taco 0010 (thought was a good idea at the time) and kept my piping 1". Up unitl 2 days ago a guy at my LSH said that it's pushing the water too fast though the coil and not geting any heat transfer, if any. So sold me a Grundfos 15-58FRC. I have it on medium right now, but i dont see any change with the hot water. My question is, does anyone know if the high setting on the Grundfos is the same GPM's as the Taco 0010? I couldn't find any pump curves for the Taco or Grundfos. Thanks