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Listed Termination Cap
Listed Chimney
Ceiling Support
Chimney
Connector
Floor
Protector
Figure 13.1 - Prefabricated Interior Chimney
Thimble
Site constructed for masonry chimney installation:
Components
•
A minimum length of 12 inches [305mm] (longer for
thicker walls) of solid insulated factory-built chimney
length constructed to UL 103 Type HT 6 inch (152mm)
inside diameter. Chimney needs to extend a minimum
of 2 inches (51mm) from the interior wall and a minimum
of 1 inch (25mm) from the exterior wall.
•
Wall spacer, trim collar and wall band to fit solid pack
chimney selected.
•
Minimum 8 inch (203mm) diameter clay liner section (if
not already present in chimney) and refractory mortar.
•
When jurisdiction requires install approved chimney
liner in masonry chimney.
Air Clearances
• Masonry chimney clearance must meet NFPA 211 mini-
mum requirement of 2 inches (51mm) to sheet metal sup-
ports and combustibles.
Augsut 01, 2016
Storm Collar
Flashing
Instructions:
1. Open inside wall at proper height for the chimney con-
2. Entry hole to masonry chimney must be lined with an 8
3. Construct a 17 inch x 17 inch (432mm x 432mm) outside
4. Attach the wall spacer to the chimney side of the frame.
5. Nail the frame into the wall opening. The spacer should
6. Insert the section of the solid insulated chimney into the
7. Tightly secure the length of the solid insulated chimney
8. Insert a section of chimney connector into the chimney.
9. Seal the end of the chimney connector to the clay liner
10. Install trim collar around the sold pack chimney section.
7039-174C
• Minimum of 1 inch (25mm) clearance around the chim-
ney connector.
• Top of wall opening is a minimum of 13-1/2 inches
(343mm) from ceiling or 4-1/2 inches (114mm) below
minimum clearance specified by chimney connector
manufacturer. NFPA 211 minimum vertical clearance of
18 inches (457mm) from chimney connector and ceiling
or minimum recommended by chimney connector manu-
facturer. Figure 13.2
nector to entry the masonry chimney. Figure 13.2
inch (203mm) minimum diameter clay liner, or equiva-
lent, secured with refractory mortar.
dimension frame from 2 x 2 framing lumber to fit into wall
opening. Inside opening of frame should be no less than
14 inch x 14 inch (356mm x 356mm). Figure 13.2
be on the chimney side.
outer wall of the masonry chimney.
with the wall band to the masonry chimney.
Make sure it does not protrude past the edge of the clay
chimney liner inside the chimney.
with refractory mortar.
ceiling
Minimum18.0"
NFPA 211
17.0" OD
14.0" ID
8.0"
Center of Hole
Thimble
Include depth
of hearth pad
Discovery I
C L
13.5" below ceiling to top
of opening
Wall
or top of opening is a min.of
4.5" below min.clearance
specified by connector mfg.
1.5 2x2 framing stud
2.0 min air clearance
1.0 min air clearance
4.5
1.5"
2.0"
1.0"
C L
1.0"
2.0"
1.5"
Figure 13.2
13
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