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InsTAllATIon - venTIng
•
For single wall vent pipe and 10' or greater horizontal
distance to any portion of a building, the vent must
terminate at least 3' (2' for non-residential installations)
above the highest point where it passes through a roof
of a building and at least 2' higher than any portion of a
building within a horizontal distance of 10'. See Figure 9.1
figure .1 - vertical vent Termination for single Wall
vent pipe and greater Than 10' Horizontally from
Adjacent Wall or Building
GREATER THAN 10 FEET
TO WALL OR ADJOINING
BUILDING
LISTED
TERMINAL
3 FEET MIN*
GREATER
THAN 10 FEET
2 FEET MIN*
HEIGHT ABOVE
ANY ROOF SURFACE
WITHIN 10 FEET
USE LISTED THIMBLE
THROUGH ROOF
* 2 FEET MINIMUM FOR
NON-RESIDENTIAL
INSTALLATIONS, BUT
SIZE ACCORDING TO
EXPECTED SNOW DEPTH
5 FEET MIN
ROOF FLASHING
4" MIN
USE LISTED THIMBLE
THROUGH CEILING
TEE WITH DRIP LEG
AND CLEANOUT CAP
DOWNWARD SLOPE
12" MIN
1/4" PER FOOT
RECOMMENDED
TOWARD DRIP LEG
LISTED TERMINAL
10 FEET
3 FEET MIN*
ROOF FLASHING
4" MIN
USE LISTED THIMBLE
THROUGH CEILING
TEE WITH DRIP LEG
AND CLEANOUT CAP
DOWNWARD SLOPE
12" MIN
1/4" PER FOOT
RECOMMENDED
TOWARD DRIP LEG
•
For single wall vent pipe and less than 10' horizontal
distance to any portion of a building, the vent must
terminate 2' higher than any portion of that building.
See Figure 9.2
figure .2 - vertical vent Termination for single
Wall vent pipe and 10' or less Horizontally from
Adjacent Building or Building
10 FEET OR LESS TO
WALL OR ADJOINING
BUILDING
LISTED
TERMINAL
2 FEET MIN*
HEIGHT ABOVE ANY
PORTION OF WALL OR
ADJOINING BUILDING
WITHIN 10 FEET
3 FEET MIN*
10 FEET OR
LESS
HEIGHT ABOVE
ANY ROOF SURFACE
WITHIN 10 FEET
USE LISTED THIMBLE
THROUGH ROOF
* 2 FEET MINIMUM FOR
NON-RESIDENTIAL
INSTALLATIONS, BUT
SIZE ACCORDING TO
EXPECTED SNOW DEPTH
B10. Once venting is complete, proceed section titled
"Installation – Gas Connections".
6-583.2
5 FEET MIN
ROOF FLASHING
4" MIN
USE LISTED THIMBLE
THROUGH CEILING
TEE WITH DRIP LEG
AND CLEANOUT CAP
DOWNWARD SLOPE
12" MIN
1/4" PER FOOT
RECOMMENDED
TOWARD DRIP LEG
LISTED TERMINAL
2 FEET MIN*
3 FEET MIN*
ROOF FLASHING
4" MIN
USE LISTED THIMBLE
THROUGH CEILING
TEE WITH DRIP LEG
AND CLEANOUT CAP
DOWNWARD SLOPE
12" MIN
1/4" PER FOOT
RECOMMENDED
TOWARD DRIP LEG
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