
14
MPL11 Woodburning Fireplace
87D0173
offset installation Sequence
1. Determine the location and amount of offset required, then select the combinations of chimney sections
and elbows required from the offset chart.
Refer to Page 15
.
2. Install the first elbow by placing the extended flue into the mating part of the fireplace or chimney sec-
tion. Push down until the outside or inlet air duct of the elbow overlaps and the snaps lock the elbow
into the fireplace or chimney section.
3. Nail the support straps to the framing member with a minimum of two 8-penny nails per strap.
4. Install the sections of pipe between elbows until the proper number of chimney sections have been in-
stalled.
5. Install the second elbow to return the run of the chimney to vertical.
6. Nail the support straps of the second elbow to a building frame member.
7. Continue installing the vertical portion of the chimney.
Note:
If the inclined portion of the chimney passes through a floor or ceiling, a firestop spacer should be
installed to provide the firestop and support required. Be sure proper spacing in maintained between the
chimney and combustibles.
chiMNey oFFSet iNStaLLatioN
3’
Min.
FP2353
single story offset
Figure 15
Storm
Collar
Flashing
Roof
Refer to Table 1
for Roof Opening
Size
Attic
Space
17” x 17” Opening
2” Min. Air Space
Clearance to
Combustibles
Fasten Support
Straps Securely
30° Elbows
FP2353
Continue chimney to proper
height and install round chim-
ney cap or chimney housing
C
L
C
L
FP2354
multi story offset
Continue chimney through roof
and install round chimney cap
or chimney housing
Firestop Spacer 2” Minimum
Air Space Clearance at Joist
Vertical Chimney
Enclosure
Chimney Must Be Enclosed
in Accessible Areas
Firestop Spacer
Diagonal
Chimney
Enclosure
RISE
Firestop
Spacer 2” Air
Space Clear-
ance to Com-
bustibles
Note:
Four (4) elbows may be
used when total installation height
exceeds 24 ft.
Maximum four (4) elbows per
Fireplace
Offset Max 10’
Support Straps
Diagonal Chimney
Enclosure
Vertical Chimney Enclo-
sure Recommended.
Diagonal Chimney En-
closure Acceptable
Fasten All Support
Straps Securely
Vertical
Chimney
Enclosure
Support Straps
Not to Penetrate
Firestop
FP2354
Figure 16
Содержание MPL11
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