I have a Triangle Tube Prestiege 250 condensing boiler (TT)
I also have an out-door wood boiler (OWB) that is supporting the TT via water-water heat exchanger.
What i want:
When the water temp of the OWB is high enough to heat the TT main boiler loop, i don't want the TT boiler to fire when heat is called for in the house.
What is happening:
TT high temp set point is 150 degrees.
I have a temp sensor on the TT main boiler loop. When it reads 155 degrees,
and heat is called for, the TT still fires. The water temp in the main loop is 155 due to the OWB, not the TT.
What am i missing here?