Venting Installation

Continued

When connecting chimney directly to the fireplace, the inner flue pipe section must be installed first with the lanced side up. The outer pipe section can then be installed over the flue pipe section with the hemmed end up. Press down on each pipe section until the lances securely engage the hem on the fireplace starter. The wire will assure the proper spacing between the inner and outer pipe

sections. 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 the 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 offset and return must be secured with two screws on outer pipe only (see Figure 9, page 8). Do not penetrate 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

111026-01J

www.fmiproducts.com

7