Bruce,
I wonder, If you pipe the genset radiator through your H2O heater, than through your hydronic coil for the HPs , than anything else you have planned,
before sending that water to your radiator. If thats a good idea or not! Boy, my thoughts are using simple bypass valves to utilitize this option any time
you want extra heat while you are running your gen. anyway! Whats Your Thoughts?
Nick-