TM 9-4520-257-12&P 0009 00
INSTALLING THE FLUE DAMPER, TYPE I (SOLID FUEL)
The flue damper shaft may be used to punch the ¼-inch hole in the stack
section if a drill is unavailable.
1. To install the flue damper, select one of the assembled sections (1) and measure its length. Make a
mark (2) halfway down the length of the section at a point 90 degrees away from the section seam (3).
Make a second mark (4) directly opposite the first mark (2) on the other side of the stack section (1).
Drill (or punch) a ¼-inch hole at each mark. After drilling the two holes, insert the flue damper (5)
inside the modified section (6) and align the holes passing through the flue damper with the holes
drilled in the side of the stack section.
2. Thread the flue damper shaft (7) through the holes, locking the curved shank (8) of the flue damper
shaft (7) into the center slot (9) of the flue damper. When properly locked together, the flue damper
and operating handle (10) will be parallel.
END OF WORK PACKAGE