We did this a few years ago...
Buderus G115 boiler with a Crown Mega-Stor indirect water heater. I think it's about 70 gallons but I'm not 100% sure. Could be a 40.
We have 4 zones set up to thermostats and a 5th zone that keeps the indirect tank at temp.
Overall we're very happy with the setup. Sure, you can drain the tank if you take a very long and hot shower, but it's plenty for most uses and recovers very quickly.
-spence
|