Monessen Hearth 6000DV - Manual (Page 27)

42D0200 27
9
1 /
2
" 9
1
/
2
"
VENT INSTALLATION
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,
consider an offset. See Figure 35 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 shows in Figure 18, page 20.
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 9 1 /
2
" (241mm) square hole in the ceiling using the locating
hole as a center point The opening should be framed to 9 1 /
2
"x9 1 /
2
"
(241mm x 241mm) inside dimensions as shown in Figure 37
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. See Figure 36. 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 twist-locked. See Figure
21, page 21.
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 9 1 /
2
"x9 1/2 " (241mm x 241mm) hole must be measured 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 in Figure
20 on page 21.
Figure 35 - Offset with Wall Strap and 45°
Elbows
Roof
Flashing
Wall
Strap
45° Elbows
Ceiling Firstop
Figure 36 - If area above is a room, install
firestop above framed hole as shown
Figure 37 - If area above is not a room, install
firestop below framed hole as shown
Continued on next page
Firestop
Nails
Nails Firestop