Harman Stove Company Accentra Owner's Manual page 21

MAINTENANCE - CLEANING
4. Remove the two heat exchanger covers. See Fig. 36.
These covers are made of cast iron and are held into
place with a swing latch in the upper right and left
corners. See Fig 35. Swing the latch upward far enough
to release the top edge of the heat exchanger cover. Tilt
the cover forward approximately 2" and lift it upward
about 1" to release the bottom edge. The cover can
now be taken completely out through the upper door
opening. Repeat the process with the second heat
exchanger cover.
Heat Exchanger channel cover latch
Fig. 35
Fig. 36