ventING installation | Designer Series Gas Fireplaces |
installation for vertical termination
1.Determine the route your vertical venting will take. If ceiling joist, roof rafters or other framing will obstruct the venting system, con- sider an offset. Refer to Figure 32 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 insulation. Also note maximum vertical rise of the venting system and any maximum horizontal offset limitations. Offsets must fall within the parameters shown on Page 20, Figure 22.
2.Set fireplace in desired location. Drop a line plumb down from the ceiling to the position of the flue exit. Mark the center point where the vent will penetrate the ceiling. Drill a small locating hole a this point.
Drop a plumb line from the inside of the roof to the ceiling locat- ing hole in the ceiling. Mark the center point where the vent will penetrate the roof. Drill a small locating hole at this point.
flat ceiling installation
1. Cut a 9Z\x" (241 mm) square hole in the ceiling using the locating |
hole as a center point The opening should be framed to 9Z\x" x 9Z\x" |
(241 x 241 mm) inside dimensions as shown in Figure 33 using |
framing lumber the same size as the ceiling joist. If the area above |
the ceiling is an insulated ceiling or a room, nail firestop from the |
top side. This prevents loose insulation from falling into the required |
clearance space. Figure 33. Otherwise, install firestop below the |
framed hole. |
2. Assemble the desired lengths of pipe and elbows necessary to |
reach from the burner system flue up through the firestop. Be |
sure pipe and elbow connections are fully |
18, Figure 18 |
Roof
Flashing
Wall Strap
45° Elbows
FP1669
Ceiling Firstop
Figure 32 -
Offset with Wall Strap and 45° Elbows
Nails
3. Cut a hole in the roof using the locating hole as a center point. |
(Cover any exposed open vent pipes before cutting hole in |
roof). The 9Z\x" x 9Z\x" (241 x 241 mm) hole must be measured |
Firestop
Figure 33 -
FP1969
on the horizontal. Actual length may be larger depending on |
the pitch of the roof. There must be a 1" minimum clearance |
from the vent pipe to combustible materials. (Insulation should |
be considered a combustible material) Frame the opening as |
shown on Page 18, Figure 17. |
If area above is a room, install firestop above framed hole as shown
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FP1970
Figure 34 - | Nails | Firestop |
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If area above is not a room, install firestop below framed hole as shown
42D0200 | 23 |
