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3. Measure, so there will be at least 1/4" rise per foot of horizontal connector pipe, maintaining
clearances to ceiling as noted in Figure 7, Page 20. This will give you center of hole for
chimney penetration.
4. After locating center of
manufacturer's specifications.
5. Connect chimney collar to tee-box using #24 ga. minimum blued or black steel connector
pipe. DO NOT use galvanized pipe. Connect each section so the crimped end faces
downward, and secure each section to each other using three (3) sheet metal screws or
rivets.
C. WALL EXIT INTO MASONRY (USING SINGLE WALL PIPE)
1.
Before connecting these units to a masonry chimney, determine that masonry fireplace
wall pass-through connector thimble meets
and is a minimum of 18" from ceiling. If connector thimble does not meet these
codes, pass-through connector must be modified. (See Figure 8).
Connectors may pass through walls or partitions constructed of combustible material if
connector is:
(a) Either listed for wall pass-through or is routed through a device listed for wall pass-
through and is installed in accordance with conditions of listing.
(b) Selected or fabricated in accordance with the conditions and clearances as stated in
table 6-7.5 of the 2000 NFPA 211 Code. Any unexposed metal that is used as part of
a wall pass-through system and is exposed to flue gases shall be constructed of
stainless steel or other equivalent material that will resist corrosion, softening, or
cracking from flue gases at temperatures up to 1800º F.
penetration, install tee box and chimney as per chimney
NFPA-211 Code and local building codes
Figure 8
Page 21
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