Venting Installation

Continued

Assembly and installation of double wall chimney system

Each double wall chimney section consists of a galvanized outer pipe, a stainless steel inner flue pipe and a wire spacer. Pipe sections must be assembled independently as chimney is installed. When connecting chimney directly to fireplace, inner flue pipe section must be installed first with lanced side up. Outer pipe section can then be installed over flue pipe section with hemmed end up. Press down on each pipe section until lances securely engage hem on fireplace starter. Wire will assure proper spacing between inner and outer pipe sections.

Note: For Canada, use chimney parts designated HT.

Opening in collar around chimney at top of fireplace must not be obstructed. Never use blown insulation to fill chimney enclosure.

Continue to assemble chimney sections as outlined, making sure that both inner and outer pipe sections are locked together. When

Return

Elbow

Offset

 

Offset

Elbow

 

6' Max.

Elbow

 

 

 

Return

Elbow

installing double wall snap-lock chimney to- gether, it is important to assure joint between chimney sections is locked. Check by pulling chimney upward after locking. Chimney will not come apart if properly locked. It is not necessary to add screws to keep chimney together (exception - see Figure 11, page 9).

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, page 7, and Figure 9).

Note: For systems with 2 elbow sets, mini- mum height is 22 feet. Maximum height for any system is 50 feet.

2.Chimney weight above offset rests on return elbow. Straps must be securely nailed to rafters or joists (see Figure 10, details A and B, page 9).

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 9).

4.All pipe connections between offset and return must be secured with two screws on outer pipe only (see Figure 11, page 9). Do not penetrate inner stainless.

Return

Elbow

Return

 

Elbow

 

6' Max. Ceiling

 

Support Pipe

 

12S-8DM

6' Max.

6' Max.

Offset

 

Offset

Return

Elbow

 

Elbow

Elbow

Offset

6' Max.

6' Max.

 

Elbow

 

 

A

B

C

Figure 9 - Typical Offset Installation

8

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