Monessen Hearth KHLDV SERIES User Manual

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21
10
1
/
2
"
10
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 20 to avoid cutting load bearing 
members. 
For optimal flame appearance, a restrictor disk is necessary on straight 
vertical runs of 10' of more.
 
•  Runs may not incorporate elbows. 
 
•  The disk is part number 56D3027 and is included in
 
installation manual packet.
 
•  Drop the disk into a 5" inner collar before installing the first
 
section of flue or install at the last section before
 
installing the termination.
 
•  An additional disk may be installed on runs of 35' or more.
 
Rotate disks perpendicular to each other. 
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 in Figures 19 and 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 10
1
/
2
" (241mm) square hole in the ceiling using the locat-
ing hole as a center point The opening should be framed to 
10
1
/
2
"x10
1
/
2
" (241mm x 241mm) inside dimensions as shown 
in Figure 22 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 insula-
tion from falling into the required clearance space. See Figure 
21. 
Otherwise, install firestop below the framed hole. See Figure 
22. 
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. 
Figure 20 - Offset with Wall Strap and 45° 
Elbows 
Roof 
Flashing 
Wall 
Strap 
45° Elbows 
Ceiling Firstop 
Figure 21 - If Area Above is a Room, Install 
Firestop above Framed Hole as Shown 
Figure 22 - If Area Above is Not a Room, Install 
Firestop above Framed Hole as Shown 
Firestop 
Nails
Nails
Firestop