Hey All, I realize this question/issue has been posted many times before, but I've read through most of the existing info and can't figure out my problem.
I have a Bosch Greenstar 151 that does DHW and Baseboard heat. It has an fw200 mounted in the boiler, and is controlled by a nest thermostat. The issue is the boiler is not keeping up. I woke up this morning and heat was set to 65 with the nest upstairs reading 63.
I have changed the min outdoor temp on the fw200 to 32 degrees, and the outdoor temp on the fw200 is reading 30, but the supply temp is still only at ~130-140F. I see it spike up to 160 sometimes, but its rare and obviously not often enough. Max temp is 186 with design temp at 180. Heat loss was set to 50% (probably the default) I moved it to 40% since its an old leaky house.
The dial is set to comfort mode.
Bottom line is ive been messing with the settings and I can't figure out why the supply temps are so low most of the time causing the boiler not to keep up.
I appreciate any help. Thank You!
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