Venting Installation
Instructions
Continued
Horizontal Termination Configurations Figures 22 and 23 show different configurations for venting with horizontal termination. Each figure includes a chart with vertical minimum/maximum and horizontal maximum dimensions which must be met. All connections must be sealed with high temperature silicone sealant as specified in the second warning statement on page 11. All horizontal terminations require 1/4" rise per 12" of horizontal run. You must add 1/4" of vertical height (V) in the following tables for each foot of horizontal run (H).
45° Starter
Elbow
45° Starter
Elbow
Venting with Two 90° Elbows
Vertical (V) | Horizontal (H1) + |
| Horizontal (H2) |
5' min. | 4' max. |
6' min. | 8' max. |
7' min. | 10' max. |
8' min. | 15' max. |
20' max. | 20' max. |
Figure 23 - Horizontal Termination Configuration for Rigid Venting Using Two 90° Elbows with Termination at 90° with Fireplace
Horizontal Venting
Vertical (V) | Horizontal (H) |
49.5" min. | 17" max. |
(45° elbow, 1' vertical pipe, 90° elbow) | |
60" min. | 77" max. |
72" min. | 101" max. |
84" min. | 125" max. |
132" min. | 149" max. |
Figure 22 - Horizontal Termination Configuration for Rigid Venting Using One 90° Elbow
installation for vertical Termination
NOTICE: Use rigid pipe only. Flex venting is not to be used with a vertical termination.
1.Determine the route your vertical venting will take. If ceiling joists, roof rafters, or other framing will obstruct the venting system, consider an offset (see Figure 24) to avoid cutting load bearing members.
Roof
Flashing
| Plumber’s |
|
(2) 45° | Tape |
|
Elbows | Connected |
|
| to Wall |
|
| Strap |
|
| Wall | (2) 45° |
| Strap | Elbows |
Firestop Firestop
Figure 24 - Vertical Cent Pipe Offsets
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