City Series ACC40E
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49
installation
Diagram 4
Diagram 3: The upper half of the flashing is installed
under the roofing material and not nailed down
until the chimney is installed. This allows for small
adjustments.
Diagram 2
Diagram 3
Dura-vent Vertical Termination
102mm x 175mm Flueing
(Rigid Flue Systems)
1.
Maintain the 38mm clearances (air spaces) to
combustibles when passing through ceilings,
walls, roofs, enclosures, attic rafter, or other
nearby combustible surfaces. Do not pack
air spaces with insulation. Check "Flueing"
Sections for the maximum vertical rise of the
flueing system and the maximum horizontal
offset limitations.
2.
Set the gas appliance in its desired location.
Drop a plumb bob down from
the ceiling to the position of
the appliance flue exit, and
mark the location where the
flue will penetrate the ceiling.
Drill a small hole at this point.
Next, drop a plumb bob from
the roof to the hole previously
drilled in the ceiling, and mark
the spot where the flue will
penetrate the roof.
3.
A Firestop spacer must
be installed in the floor or
ceiling of every level. To
install the Firestop spacer
in a flat ceiling or wall, cut a
305 mm square hole. Frame the hole as shown
in Diagram 2 and install the firestop.
4.
Assemble the desired lengths of pipe and
elbows. Ensure that all pipes and elbow con-
nections are in the fully twist-locked position
and sealed.
NOTE:
For best results and optimum perfor-
mance with each approved flueing system, it is
highly recommended to apply “Mill-Pac” sealant
(supplied) to every inner pipe connection. Failure
to do so may result in drafting or performance
issues not covered under warranty.
5.
Cut an opening in the roof centered on the
small drilled hole placed in the roof in Step 2.
The hole should be of sufficient size to meet
the minimum requirements for clearance to
combustibles of 38mm.
Slip the flashing under the shingles (shingles should
overlap half the flashing) as per Diagram 3.
6.
Continue to assemble pipe lengths.
Note: If an offset is necessary in the attic
to avoid obstructions, it is important
to support the flue pipe every 3 feet,
to avoid excessive stress on the
elbows, and possible separation.
Wall straps are available for this
purpose.
Galvanized pipe is desirable above the roofline
due to its higher corrosion resistance. Continue
to add pipe sections through the flashing until
the height of the flue cap meets the minimum
height requirements specified in Diagram 4 or
local codes. Note that for steep roof pitches,
the vertical height must be increased. A poor
draft, or down drafting can result from high wind
conditions near big trees or adjoining roof lines,
in these cases, increasing the flue height may
solve the problem.
7.
Ensure flue is vertical and secure the base of
the flashing to the roof with roofing rails, slide
storm collar over the pipe section and seal with
a mastic.
8.
Install the vertical termination cap by twist-
locking it.
Note: Any closets or storage spaces, which
the flue passes through must be
enclosed.
Diagram 1
Note: All vertical terminations are flued
using 102mm x 175mm flueing and rigid
pipe adaptor #510-994.
Roof Pitch
Minimum Flue Height
Meters
flat to 7/12
0.61
over 7/12 to 8/12
0.61
over 8/12 to 9/12
0.61
over 9/12 to 10/12
0.76
over 10/12 to 11/12
0.99
over 11/12 to 12/12
1.22
over 12/12 to 14/12
1.52
over 14/12 to 16/12
1.83
over 16/12 to 18/12
2.13
over 18/12 to 20/12
2.29
over 20/12 to 21/12
2.44
Содержание ACC40E City Series
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