47
TABLE 2. Offset Combinations
ECO-STEEL Metal Chimney Installation
7. Attic Insulation Shield:
The Attic Insulation Shield must be installed where the chimney passes into an attic. Its
purpose is to maintain clearances from loose packed or blown insulation from the chimney. If an Attic Shield is not used
the chimney needs to be enclosed within a framed enclosure. Always maintain a 2” air-space clearance to combustibles.
Install the shield as follows:
• Remove any insulation or debris from attic floor around the framed opening.
• Assemble chimney sections above the Firestop to a height that extends beyond the height of the attic insulation shield.
• Slip the Attic Insulation Shield over the chimney until the base sits squarely on the framed opening.
• Secure the Attic Insulation Shield to the top of the framed opening using nails or screws
(Figure 56)
.
8. Elbow Installation:
15° and 30° elbows are provided to allow chimneys to avoid framing members or roof peaks. A
maximum of 30° from vertical is allowed and a total of two elbows for each chimney installation. on naturally drafting
FIREPLACES. A 2” clearance to combustibles must be maintained. If more than one offset (2 elbows) is needed, a
mechanical exhaust fan should be used. The mechanical fan company would determine the viability of performance.
Attach the elbow to the chimney pipe, support or other part. Using the offset chart, add chimney sections between
elbows.
A Support Band or plumbers strap is required for every 4-foot interval between elbows to support the
load (Figure 57)
. Attach the upper elbow to bring the chimney back to vertical. See TABLE 2 and Figure 55 for offset
combinations – 2 offsets (4 elbows) maximum.
Earthcore Industries
MAGNUM Series Fireplace
CHIMNEY
ATTIC
INSULATION
SHIELD
NAILS OR
SCREWS
FLOOR/
CEILING
FIRESTOP
FIGURE 56
Plumber’s Strap
Support Band
(required every 4FT)
Firestop
W/Integral Radiation
Shield
Plumber’s Strap
Support Band
4’ Max.
4’ Max.
FIGURE 57
