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BW36 SERIES WOODBURNING FIREPLACE
WARNING!
DO NOT COMBINE OFFSETS TO
CREATE AN OFFSET GREATER
THAN 30° FROM VERTICAL. THIS
MAY CREATE A FIRE HAZARD
SINCE THE NATURAL DRAFT MAY
BE RESTRICTED.
A
B
1
1
/4" OVERLAP
Figure 8
Chimney Offset/Return
e. Whenever the chimney penetrates a floor/ceiling,
a firestop spacer must be installed.
f. The effective height of the firebox assembly
is 33
5
⁄8".
Example: Your “A” dimension from Figure 8 is 14
1
⁄2".
Using Table 1, the dimension closest to but not less
than 14
1
⁄2" is 14
5
⁄8" using a 30° offset/return. It is then
determined from the table that you would need 33"
(Dimension “B”) between the offset and return. The
chimney components that best fit your application are
two [2] SL312’s.
No one builds a better fire
c. The “B” dimensions that coincide with the “A” dim-
ensions represent the required vertical clearance
that is needed to complete the offset and return.
d. Read across the chart and find the number of
chimney sections required and the model num-
ber of those particular chimney parts.
*Proper assembly of air cooled chimney parts result in an overlap at chimney joints of 1
1
/4”. Effective length is built into this
chart.
Offset Chart* TABLE 1
15° 30°
A B A B SL306 SL312 SL318 SL324 SL336 SL348
1
5
/8
” 13
3
/8
” 3
7
/8
” 14
1
/2
”– – – – – –
2
7
/8” 17
3
/4” 6
1
/4” 18
5
/8” 1”–– –––
–– 8
5
/8” 22
3
/4” 2”–– –––
4
1
/2
” 23
5
/8
” 9
1
/4
” 23
3
/4
”– 1”– –––
––11
5
/8” 27
7
/8” 1” 1”– –––
6” 29
3
/8” 12
1
/4” 29”––1”–––
7
1
/4” 34” 14
5
/8” 33”–2”– –––
––15
1
/4” 34
1
/8”– – – 1”––
––17
5
/8” 38
1
/4” 1”–– 1”––
––20
5
/8” 43
1
/2”– – 2”–––
10
5
/8” 46
3
/4” 21
1
/4” 44
5
/8”– – – – 1”–
11
7
/
8” 51
3
/
8” 23
5
/
8” 48
3
/
4” 1”–– –1”–
––26
5
/8” 53
7
/8”– – – 2”––
13
3
/4” 58
3
/8” 27
1
/4” 55
3
/4”– – – – – 1”
15” 63” 29
5
/
8” 59” 1”–– ––1”
16
1
/
2” 68
3
/
4” 32
5
/
8” 64
1
/
4”– 1”– ––1”
18” 74
5
/8” 35
5
/8” 69
1
/2”– – 1”––1”
––38
5
/8” 74
5
/8”– – – 1”–1”
––41” 78
3
/
4” 1”–– 1”–1”
22
3
/4” 91
7
/8” 44
5
/8” 85”––––1” 1”
24” 96
1
/
2” 47” 89
1
/
8” 1”–– –1” 1”
25
7
/
8” 103
1
/
2” 50
5
/
8” 95
1
/
2”– – – – – 2”