6
K. Install the first smaller ring of the upper throat
components, consisting of items 17, 18, 18C, 19, 20
and 20C. Ensure the ring is centered. See Figure
16.
L. Install the throat cap pieces, items 21, 21C, 22
and 22C, followed by the double flue adapter, item
23B. See Figures 17 and 18.
M. Install Stone Age masonry chimney system,
consisting of clay liners and outer blocks, or Stone
Age Pipe Adapters if installing a metal pipe chim-
ney. See Figures 19 and 20.
13
14
16
15
17
18
19
20
21
22
23 Outer
Block
22
Clay Flue
21
Figure 19. Stone Age Masonry Chimney
Figure 15. Middle Throat Level
Figure 16. Upper Throat Level
Figure 17, Throat Cap
18C
20C
14C
16C
21C
22C
Clay Flue
23 Outer
Block
21C
23B
Figure 18, Double Flue Adapter
23B
Summary of Contents for NA72IND
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