Venting Installation
Instructions
Continued
5.Complete the cathedral ceiling installation by following the same procedures outlined in steps 2 through 7 for Flat Ceiling Installation, page 14.
Vertical Termination Configurations Figures 26 through 29 show four different configu- rations for vertical termination. These minimum vertical rises are based on horizontal runs with a minimum of 1/4" upwards pitch per foot and do not reflect constraints on a vertical system with 45° or greater offset.
Any offset pitch of 45° or less must be considered horizontal and sized within the maximum allow- able lengths listed in the following examples. All connections must be sealed with high temperature silicone sealant as specified in the second warning statement on page 10.
Venting with Two 90° Elbows
Vertical (V) Horizontal (H1) + | |
| Horizontal (H2) |
5' min. | 2' max. |
6' min. | 4' max. |
7' min. | 6' max. |
8' min. | 8' max. |
20' max. | 8' max. |
45° Starter
Elbow
Note: Install restrictor into inner collar of fireplace as shown.
Figure 26 - Vertical Rigid Venting
Configuration Using Two 90° Elbows
with Two Horizontal Runs
Venting with One 90° Elbow
Vertical (V) | Horizontal (H) |
5' min. | 2' max. |
6' min. | 4' max. |
7' min. | 6' max. |
8' min. | 8' max. |
20' max. | 8' max. |
45° Starter
Elbow
Note: Install restrictor into inner collar of fireplace as shown.
Figure 27 - Vertical Rigid Venting
Configuration Using One 90° Elbow
Venting with Two 90° Elbows
Vertical | Horizontal |
(V1) | (H) |
5' min. | 6' max. |
6' min. | 12' max. |
7' min. | 18' max. |
8' min. | 20' max. |
Note: Install restrictor into inner collar of fireplace as shown.
45° Starter
Elbow
Figure 28 - Vertical Rigid Venting
Configuration Using Two 90° Elbows
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