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Hearth and Home Technologies BIR42-B owner manual Using Offsets/Returns, Example

Models: BIR42-B

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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 fire.

•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 find 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

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 fits your application is two SL1112s.

Table 8.2

 

A

 

B

 

 

 

 

 

in.

 

mm

in.

 

mm

SL1106

SL1112

SL1118

SL1136

SL1148

4 7/8

 

124

17 7/8

 

454

-

-

-

-

-

7 1/4

 

184

22

 

559

1

-

-

-

-

9 3/4

 

248

26 1/8

 

664

2

-

-

-

-

10 1/4

 

260

27 1/4

 

692

-

1

-

-

-

 

 

 

 

 

 

 

 

 

 

 

12 3/4

 

324

31 3/8

 

797

1

1

-

-

-

13 1/4

 

337

32 3/8

 

822

-

-

1

-

-

 

 

 

 

 

 

 

 

 

 

 

15 3/4

 

400

36 5/8

 

930

-

2

-

-

-

18 1/8

 

460

40 3/4

 

1035

1

2

-

-

-

18 3/4

 

476

41 3/4

 

1060

-

1

1

-

-

21 3/4

 

552

47

 

1194

-

-

2

-

-

22 1/4

 

565

4 8

 

1219

-

-

-

1

-

 

 

 

 

 

 

 

 

 

 

 

24 3/4

 

629

52 1/8

 

1324

1

-

-

1

-

27 3/4

 

705

57 3/8

 

1457

-

1

-

1

-

 

 

 

 

 

 

 

 

 

 

 

28 1/4

 

718

58 3/8

 

1483

-

-

-

-

1

30 3/4

 

781

62 1/2

 

1588

1

-

-

-

1

 

 

 

 

 

 

 

 

 

 

 

33 3/4

 

857

67 3/4

 

1721

-

1

-

-

1

36 3/4

 

933

73

 

1854

-

-

1

-

1

39 3/4

 

1010

78 1/8

 

1984

-

-

-

2

-

 

 

 

 

 

 

 

 

 

 

 

41 1/8

 

1045

82 3/8

 

2092

1

-

-

2

-

45 3/4

 

1162

88 1/2

 

2248

-

-

-

1

1

 

 

 

 

 

 

 

 

 

 

 

48 1/8

 

1222

92 3/4

 

2356

1

-

-

1

1

51 3/4

 

1314

98 7/8

 

2511

-

-

-

-

2

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.

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Heatilator • Birmingham BIR42-B • 4059-681 • 11/11

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Hearth and Home Technologies BIR42-B owner manual Using Offsets/Returns, Example
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BIR42-B specifications

Hearth and Home Technologies has consistently set the standard for modern heating solutions, and the BIR42-B gas fireplace is no exception. This model stands out for its blend of elegance, efficiency, and technology, making it a highly sought-after choice for homeowners looking to elevate their living spaces.

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In summary, the BIR42-B by Hearth and Home Technologies is a top-tier gas fireplace that expertly combines style, functionality, and safety. With its modern design, advanced heating capabilities, user-friendly features, and commitment to environmental responsibility, it stands as an excellent investment for those looking to enhance their home’s ambiance and comfort. This model not only promises warmth but also becomes a central element of design and leisure in any living space.