12
VENTING INSTALLATION INSTRUCTIONS Installation Planning (Cont.) Installation for Vertical Termination
VENTING INSTALLATION
INSTRUCTIONS
Continued
Venting with Two 90° Elbows
| Horizontal (H1) + |
Vertical (V) | Horizontal (H2) |
5' min. | 6' max. |
6' min. | 12' max. |
7' min. | 18' max. |
8' min. | 20' max. |
20' max. | 20' max. |
45° Elbow
Figure 18 - Horizontal Termination Configuration for Venting Using Two 90° Elbows with Termination at 90° with Fireplace
INSTALLATION FOR VERTICAL TERMINATION
Note: Vertical restrictor must be installed in all vertical installations.
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 19) to avoid cutting load bearing members. Note: Pay special attention to these installation instructions for required clearances (air space) to combustibles when passing through ceilings, walls, roofs, enclosures, attic rafters, etc. Do not pack air spaces with insu- lation. Also note maximum vertical rise of the venting system and any maximum horizontal offset limitations.
2.Set the fireplace in desired location. Drop a plumb line down from the ceiling to the position of the fireplace exit flue. Mark the center point where the vent will penetrate the ceiling. Drill a small locating hole at this point.
Drop a plumb line from the inside of the roof to the locating hole in the ceiling. Mark the center point where the vent will penetrate the roof. Drill a small locating hole at this point.
Roof Flashing
Wall Strap 
45° Elbow
Ceiling Firestop
Figure 19 - Offset with Wall Strap and 45° Elbows
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