FTF10 OFFSET ELEVATION CHART

 

A

B

 

FTF10-ES30

 

Number of FTF10

Offset

Height

Offset/Return

FTF10-S4

Chimney Sections

 

 

 

 

 

 

 

(Inches)

(Inches)

Elbow Set

Stabilizer

12"

18"

36"

 

 

 

 

 

 

 

 

 

4

 

15

³⁄₄

1

0

0

0

0

9

 

24

¹⁄₂

1

0

1

0

0

12

 

29

³⁄₄

1

0

0

1

0

14

¹⁄₄

33

¹⁄₂

1

0

2

0

0

17

¹⁄₄

38

¹⁄₂

1

0

1

1

0

20

¹⁄₄

43

³⁄₄

1

0

0

2

0

21

 

45

¹⁄₄

1

0

0

0

1

22

¹⁄₄

47

¹⁄₂

1

0

2

1

0

25

¹⁄₄

52

¹⁄₂

1

0

1

2

0

26

¹⁄₄

54

¹⁄₄

1

0

1

0

1

28

¹⁄₄

57

³⁄₄

1

0

0

3

0

29

¹⁄₄

59

¹⁄₄

1

0

0

1

1

31

¹⁄₄

63

 

1

0

2

0

1

32

¹⁄₂

65

 

1

0

4

1

0

34

¹⁄₄

68

¹⁄₄

1

0

1

1

1

36

¹⁄₄

71

³⁄₄

1

0

3

0

1

37

¹⁄₄

73

¹⁄₄

1

0

0

2

1

38

¹⁄₄

75

 

1

0

0

0

2

39

¹⁄₄

77

 

1

0

2

1

1

41

¹⁄₂

80

¹⁄₂

1

0

1

4

0

43

¹⁄₄

83

³⁄₄

1

0

1

0

2

44

¹⁄₂

85

³⁄₄

1

0

3

1

1

45

¹⁄₄

87

¹⁄₂

1

0

0

3

1

46

¹⁄₄

89

 

1

0

0

1

2

48

¹⁄₄

91

¹⁄₂

1

0

2

0

2

49

¹⁄₂

94

¹⁄₂

1

0

1

5

0

51

¹⁄₄

97

³⁄₄

1

0

1

1

2

54

¹⁄₄

103

 

1

0

0

2

2

55

¹⁄₄

104

¹⁄₂

1

0

0

0

3

56

¹⁄₂

106

¹⁄₂

1

0

2

1

2

59

¹⁄₂

111

³⁄₄

1

0

1

2

2

61

³⁄₄

116

 

1

1

1

0

3

64

³⁄₄

121

¹⁄₄

1

1

0

1

3

67

 

124

³⁄₄

1

1

2

0

3

69

 

127

³⁄₄

1

1

1

3

2

70

 

130

 

1

1

1

1

3

73

 

135

¹⁄₄

1

1

0

2

3

75

 

138

³⁄₄

1

1

2

1

3

79

 

145

¹⁄₂

1

1

1

0

4

80

¹⁄₄

147

¹⁄₂

1

1

3

1

3

82

 

150

³⁄₄

1

1

0

1

4

87

 

159

¹⁄₂

1

1

1

1

4

 

 

 

 

 

 

 

 

 

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Underside Of Chimney

Figure 37

FTF10-E30 Return Elbow*

Chimney Section (S)

FTF10-30 Offset Elbow*

B

A

*Part of Offset/Return Package Model FTF10-ES30

Figure 38

INSTALLING OFFSETS

First, review the Offset Elevation Chart and Figure 38 for reference.

Step 1. Determine the offset distance where chimney is to pass through the first ceiling- dimension “A.” To find this point on your ceil- ing, first determine the center point for a verti- cal chimney following the instructions for ver- tical installation.

Measure height to the ceiling from the top of fireplace-dimension “B.” Use the appropriate Offset Elevation Chart to find dimension “A.” Mark point where you will drive your nail to show the center point for your offset ceiling cut.

Step 2. Proceed by using the Straight Up Instal- lation Instructions for cutting and framing ceil- ing and roof openings.

13

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Lennox Hearth LA41CF, LA41TCF installation instructions FTF10 Offset Elevation Chart, Installing Offsets