The boiler is dripping water from the inside. Possibly a coil or something like that.
Boiler No. JOTW100WPC
Serial No. JOTW 112282-0492
IBR Burner Capacity: 1.00 Gal/HR
D.D.E HTG. Capacity or gross output B.TU./HR:121000 water
Ratings 105000 BTU/HR Water