You should get readings on the manometer from two places to compare, one in the firebox itself and one in the flue pipe before the baro. Do you have a chimney or direct / power vent?
If you don't have a chimney there will be instructions in the manual for setting the direct / power vent up based on the measured draft.
LL manuals have the recommended draft numbers but should be in the ballpark of 0.02 over fire and 0.05 in the flue pipe....check the manual or call LL for the exact numbers.
Adjusting the amount of fan intake the baffle plate covers is part of setting up and the manometer gives you the actual numbers to do it accurately.
Do you have a couple CO monitors?
forgot to ask, which mano did you get?
Last edited by titleist1
on Wed Jan 11, 2017 11:54 am, edited 1 time in total.