Using Offsets/Returns - Heat & Glo EXCLAIM-36 Owner's Manual

B. Using Offsets/Returns
• Use an offset/return to bypass overhead obstructions.
• An offset and return can be used as a single entity or separated by chimney section(s).
WARNING! Risk of Fire! DO NOT use offset/returns greater than 30°. Chimney draft will be restricted and could cause
overheating and fi re.
• Measure the shift needed to avoid the overhead obstruction. Refer to dimension A in Figure 8.3.
• Find the appropriate A dimension listed in Table 8.2.
• The B dimension coinciding with the A dimension measurement in Table 8.2 represents the required vertical clearance
needed to complete the offset/return.
• Read across the chart to fi nd the number of chimney sections/model numbers needed between the offset and return.
A
B
1-1/4 in. (32 mm)
OVERLAP
Figure 8.3 Chimney Offset/Return
Table 8.2
A B
in. mm in.
4 7/8 124 17 7/8
7 1/4 184 2 2
9 3/4 248 26 1/8
10 1/4 260 27 1/4
12 3/4 324 31 3/8
13 1/4 337 32 3/8
15 3/4 400 36 5/8
18 1/8 460 40 3/4 1035
18 3/4 476 41 3/4 1060
21 3/4 552 4 7 1194
22 1/4 565 48 1219
24 3/4 629 52 1/8 1324
27 3/4 705 57 3/8 1457
28 1/4 718 58 3/8 1483
30 3/4 781 62 1/2 1588
33 3/4 857 67 3/4 1721
36 3/4 933 7 3 1854
39 3/4 1010 78 1/8 1984
41 1/8 1045 82 3/8 2092
45 3/4 1162 88 1/2 2248
48 1/8 1222 92 3/4 2356
51 3/4 1314 98 7/8 2511
Proper assembly of air cooled chimney parts results in an overlap of chimney joints
of 1-1/4 in. (32 mm). Effective length is built into this table.
28
Example:
Your "A" dimension from Figure 8.3 is 14 1/2 in. (368
mm). Using Table 8.2 the dimension closest to, but not
less than 14 1/2 in. (368 mm) is 15 3/4 in. (400 mm) using
a 30° offset/return.
You determined from the table that you would need
36 5/8 in. (930 mm) (Dimension "B") between the offset
and return.
The chimney component that best fi ts your application is
two SL1112s.
SL1106 SL1112 SL1118
mm SL406 SL412 SL418
454 - - -
559 1 - -
664 2 - -
692 - 1 -
797 1 1 -
822 - - 1
930 - 2 -
1 2 -
- 1 1
- - 2
- - -
1 - -
- 1 -
- - -
1 - -
- 1 -
- - 1
- - -
1 - -
- - -
1 - -
- - -
Heat & Glo • EXCLAIM-36, EXCLAIM-42 • 4013-251 Rev D • 03/09
SL1136 SL1148
SL436 SL448
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
1 -
1 -
1 -
- 1
- 1
- 1
- 1
2 -
2 -
1 1
1 1
- 2