Hearthstone Quality Home Heating Products, Inc.
Bristol DX Model 8762
19
All termination caps must be no less than 18”
(457mm) horizontally from any roof or vertical
surface. See Figure 18.
The termination must fall within the chart in
Figure 24.
The maximum vertical run is 35’
The minimum vent/air intake termination clearances
above the high side of an angled roof are as follows:
Roof Pitch
Feet
Meters
Flat to 6/12
1
0.3
7/12 to 9/12
2
0.6
10/12 to 12/12
4
1.2
13/12 to 16/12
6
1.8
17/12 to 21/12
8
2.4
Figure 17 -
Termination Cap clearances
Prefabricated & Fireplace Chimney
Installations
The Bristol 8762 is approved for use with direct vent
chimney conversion kits in masonry or prefabricated
solid fuel listed chimneys. The following installation
requirements must be followed:
The termination must fall within the chart shown
in Figure 24.
In a masonry chimney, a fireclay liner or listed
steel liner, must be present the entire length of
the chimney.
The maximum vertical
length of vent is 35’.
The liner must have an inside dimension or
diameter
6” or greater.
Prefabricated chimneys must be UL103 or ULC
S-629 listed and have a minimum INSIDE
diameter of 6”. Prefabricated chimneys must be
listed for the specific manufacturer’s conversion
kit.
The use of an existing chimney as an air intake is
not listed under the ANSI Z21.88-09-CSA 2.33-09
test methods; this installation has been tested and
approved by Intertek Testing Services with an
appropriate test. The code authority having
jurisdiction must be consulted prior to proceeding
with this installation method. See examples below.
Figure 18
– Existing Chimney Venting Options
