Currently I have oil boiler with fin tube radiation on the oil boiler, it uses one circ pump and two zone valves. And electric water heater. I just got an indoor wood boiler, and an Amtrol indirect water heater. I would like these hooked so the first source for baseboard heat is wood---then oil if that doesn't keep up or is not being burned. For the domestic hot water I would like the first source to be the Amtrol unit then the electric if the wood isn't burning. I looked at the sticky's and couldn't find a hookup similar to this, but think this must be a fairly common request. I do have available extra circ pumps, and an outdoor temp sensor if any of that comes into something useful for this hookup. Thanks P.S. the real question here is "Is there a site or sticky I should be looking at for the hookup diagram for a system like this?"