joshct,

Unfortunately with a condensing boiler, it runs most efficiently at lower temps (about 120 degrees) when it condenses the flue gasses it is wringing out as much heat as possible. At higher temps the flue gasses will not condense. To get 120 degree water for your shower, you should have a separate instantaneous or storage water heater. As for the wait for HW, there are recirc pumps you can get, but to be satisfied with this setup, you need to run an additional recirc line (1/2" or 3/4") from the farthest HW run back to the cold water inlet of the water heater. This will continuously (or timer model) recirculate HW through the run and back to the water heater eliminating the wait.

Hope this helps,

Dan

Thanks Dan,

Very helpful! I will look into other options. I normally need to crank up the boiler in the dead of winter as I don't have enough radiation in the house for 120 degree water to heat enough, i.e. the circulator runs 24 hours a day and the house cannot reach the setpoint.

Josh