Rob R. wrote:Can you explain the system that distributes the heated water to each house?
If it is pex tubing, what size?
How long is it?
You can have the biggest boiler in the state of Maine, but your distribution system can only move so many btu's.
Lets start with drawing a triangle and put a home on each corner. At the top of the triangle is my home...60 ft from the out door boiler. On each of the other corners is a home which, is 150 ft from the boiler. 1 inch pex (insulated) running to each home respectively (both out and in lines). My home and the home heated to 45 degrees each have a #9 taco circulator pump (bothe these homes are open loop systems). The other home has a #14 taco circulator pump and a plate exchanger. Is this picture of the layout helpful?