Secondary Air Tube Replacement - Osburn 2200 Owner's Manual

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.

4.5 Secondary Air Tube Replacement

(see Figure 4.3)
1. Remove cotter pin at LH end of tube.
2. Slide tube to right and lower tube end below LH plenum.
3. Slide tube to left to remove.
4. Reassemble in reverse order using a new cotter pin. The cotter pin is a hammerlock style and
locks into place by hitting the head sharply with a hammer.
5. Note that any tube can be replaced without disturbing the baffle.
Figure 4.2 – Firebrick layout
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