OWB sits about 14 feet from garage, I ran Logstor from unit to back of garage, maybe 50 ft run.
There is no plate exchanger. Primary circ. Taco 010
Secondary circ. Grunfos ( not shure of size)
Usually I keep thermostat at 68 to 70, so pump will run 75 percent of time.
Gauges at back of boiler, and inside garage show no heatloss in Logstor.
Garage. 28 x 40. 4ft of concrete wall on top of slab, 10 ft wood famed wall on top of concrete.
1- 12 x 12 garage door( insulated)
2- 3 x 7 man doors(insulated)
No windows.
Roof. 4" closed cell foam (R28) with 6" open cell foam over it (R24). Total R52
Wood framed walls 4" closed cell foam( R28)
4ft concrete walls 3" closed cell foam( R21)
Under slab 2" foam board
Thinking maybe just hook up another modine and scrapping the radiant altogether.