VENTING INSTALLATION

Continued

Continue to assemble chimney sections as outlined, making sure that both the inner and outer pipe sections are locked together. When installing double wall snap-lock chimney together, it is important to assure the joint between the chimney sections is locked. Check by pulling chimney upward after locking. The chimney will not come apart if properly locked. It is not necessary to add screws to keep chimney together (exception - see Figure 9, page 8).

USING ELBOW OFFSETS (30E-8DM)

1.To achieve desired offset, you may install combinations of 12", 18", 24", 36" and 48" length of double wall pipe (see offset chart and Figure 7).

2.Chimney weight above offset rests on return elbow. Straps must be securely nailed to rafters or joists (see Figure 8, details A and B on page 8).

3.Maximum length of pipe between supports (return elbow or 12S-8DM) is 6' of angle run. Maximum of two 6' angle run sections per chimney system (see Figure 7).

4.All pipe connections between the offset and return must be secured with two screws on the outer pipe only (see Figure 9, page 8). Do not penetrate the inner stainless.

OFFSET

RISE

 

CHIMNEY LENGTH

 

A

B

48"

36"

24"

18"

12"

4 3/8"

16 3/8"

 

 

ELBOW

SET

ONLY

 

 

9 3/4"

25 1/2"

 

 

 

 

 

 

1

12 3/4"

30 3/4"

 

 

 

 

1

 

 

15"

34 3/4"

 

 

 

1

 

 

 

18"

40"

 

 

 

 

1

 

1

21 1/4"

46 1/4"

 

 

1

 

 

 

 

23 3/4"

49 1/4"

 

 

 

1

1

 

 

27 3/4"

56 3/4"

1

 

 

 

 

 

 

30"

60 3/4"

 

 

1

 

1

 

 

33"

66"

1

 

 

 

 

 

1

36"

71"

1

 

 

 

1

 

 

38 1/4"

75"

 

 

2

 

 

 

 

41 1/4"

80 1/4"

 

 

1

 

1

 

1

45"

86 3/4"

 

 

2

 

 

 

 

46 3/4"

89 1/2"

1

 

 

 

1

 

1

51"

97"

1

 

1

 

 

 

 

53 1/4"

101"

 

 

2

 

1

 

 

56 1/4"

106 1/4"

2

 

 

 

 

 

 

59 1/4"

111 1/2"

1

 

1

 

1

 

 

61 3/4"

115 1/2"

2

 

 

 

 

 

1

64 3/4"

120 3/4"

2

 

 

 

1

 

 

68 1/4"

127"

1

 

2

 

 

 

 

70"

130"

2

 

 

 

1

 

1

74 1/4"

137 1/2"

1

 

2

 

 

 

1

76 3/4"

141 1/2"

1

 

2

 

1

 

 

79 3/4"

146 3/4"

 

 

4

 

 

 

 

OFFSET CHART (22-50 FT. SYSTEM HEIGHT)

Return

 

 

Return

 

Elbow

 

 

Elbow

 

Offset

Offset

 

Return

 

Elbow

 

Elbow

 

Elbow

6' Max.

 

6' Max.

Ceiling

 

 

 

Return

 

 

Support Pipe

 

Return

 

12S-8DM

6' Max.

Elbow

 

 

Elbow

 

 

 

6' Max.

Offset

Offset

 

 

 

Offset

Elbow

6' Max. Elbow

6' Max.

Elbow

 

 

 

A

 

B

C

Figure 7 - Typical Offset Terminations

111099-01L

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