I'm installing a wood/coal boiler/radiant heater picture of firebox attached. Now my plan is to use the oil boiler only as a distribution vessel and turn the burner off entirley. I plan to do this by taking the cold water return off the oil boiler and attaching it to the cold water return on the wood boiler. Then taking the hot water output from the wood boiler and attaching it to the cold water return on the oil boiler. Then pretty much leaving the rest of the system alone. The rest of system consists of a DHW heater 2 infloor radiant heat zones and a forced air system with a radiator type heat exchanger. I intend to totally enclose the boiler in it own insulated room and run the cold air return from the forced air system to blow cold air onto the heater and then run the hot air into the forced air system. So thats the general plan, but I'm not real familiar with aquastats. As I understand they turn the pump on at a set temp and turn the pump off at a set temp. Easy enough. 1. Can an aquastat control more than one pump at the same time. like all four zones as I described above? 2. Can you have an aquastan an a thermostat on the same pump? 3. Is there anything special I need to do to install an aquastat, if I buy an aquastat will it come with everything that I need to install it? Think that enough for starter, but I have many more question to follow about actual setup and design.