Osburn 1800 Owner's Manual page 27

3. Install the baffle support/extension (H) ensuring that it fits between the front risers and hold it in
place. Install the front secondary air tube as show in figure 3.4c ensuring air holes face forward.
Install the cotter pins as in fig 3.4. Installing the front secondary air tube (E) will stabilize baffle
assembly during the next step.
4. Install the middle (F) and rear (G) secondary air tubes ensuring air holes face forward. Install the
cotter pins as in fig 3.4.
All firebrick and duraboard baffles must be properly in place for correct burning operation. Have any
damaged firebricks replaced. Check the firebricks annually for damage and replace if they are broken
or damaged. See Figure 3.3 for the firebrick layout. Install the side & back firebricks first, and then the
bottom firebricks.
Figure 3.4c
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