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[yotehunter66]

 From what I can see from the one pic there is at least one elbow you can eliminate from the system. Turn the pipe from the sidearm to the plate exchanger 45 degrees and remove the bottom elbow.

[dukethebeagle]

agreed,theres alot of 90s there

[willieG]

193 entering exchanger from OWB after passing though side arm (good)
189 going to fin fans from exchanger (good)
160 to 165 returning from fin fans to exchanger to be reheated (acceptable)
all important temp not shown....return temps going back to OWB. this number will tell if you are moving more water than the indoor boiler and if you have room to add more baseboard if you think you need it

[aries9245]

So I'm curious have u figured out the problem yet?

[yotehunter66]

Me too. This inspired me to look at my system and I can see where some improvements can be made this off season.