installation
Grandview
®
G800C-1 Gas Fireplace | 59
Unit Installation with Vertical
Termination
1. Maintain the 1-1/4" 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 for the maximum vertical
rise of the venting system and
the maximum horizontal
offset limitations.
2. Set the gas appli-
ance in its desired
location. Drop a
plumb bob down
from the ceiling to
the position of the
appliance flue exit,
and mark the loca-
tion
where the vent will
penetrate the ceiling.
Drill a small hole at
his point. Next, drop
a plumb bob from the roof to the hole previously
drilled in the ceiling, and mark the spot where the
vent will penetrate the roof. Determine if ceiling
joists, roof rafters or other framing will obstruct
the venting system. You may wish to relocate
the appliance or to offset, as shown in Diagram
2 to avoid cutting load bearing members.
Diagram 3
Diagram 5
plumber's
tape
connected
to wall strap
Ruban de
plombier
relié à
l’attache
murale
wall
strap
Attache
murale
45
o
Elbows
Coudes de 45
o
Firestop
Spacer
Espaceur
coupe-feu
walstrp.eps
walstrpf.eps
french
NOTE:
For best results and optimum perfor-
mance with each approved venting system,
it is highly recommended to apply “Mill-Pac”
sealant (supplied) to every inner pipe connec-
tion. Failure to do so may result in drafting or
performance issues not covered under warranty.
Diagram 5
Diagram 6
Diagram 7
The four wood screws provided should be
replaced with appropriate fasteners for stucco,
brick, concrete, or other types of sidings.
Note: If installing termination on a siding
covered wall, a vinyl siding standoff
or furring strips must be used to
ensure that the termination is not
recessed into the siding.
7. Before connecting the horizontal run of vent pipe
to the vent termination, slide the Wall Thimble
over the vent pipe.
8. Slide the appliance and vent assembly towards
the wall carefully inserting the vent pipe into the
vent cap assembly. It is important that the vent
pipe extends into the vent cap sufficient distance
so as to result in a minimum pipe overlap of
1-1/4 inches. Secure the connection between
the vent pipe and the vent cap by attaching the
two sheet metal strips extending from the vent
cap assembly into the outer wall of the vent
pipe. Use the two sheet metal screws provided
to connect the strips to the pipe section. See
Diagram 6.
9. Install wall thimble in
the center of the 10"
square and attach
with wood screws
(Diagram 7).
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 10 inch
square hole. Frame the hole as shown in
Diagram 3 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.
5. Cut a hole 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 1-1/2". Slip the flashing under the shingles
(shingles should overlap half the flashing) as
per Diagram 4.
Roof Pitch
Minimum Vent Height
Feet
Meters
flat to 7/12
2
0.61
over 7/12 to 8/12
2
0.61
over 8/12 to 9/12
2
0.61
over 9/12 to 10/12
2.5
0.76
over 10/12 to 11/12
3.25
0.99
over 11/12 to 12/12
4
1.22
over 12/12 to 14/12
5
1.52
over 14/12 to 16/12
6
1.83
over 16/12 to 18/12
7
2.13
over 18/12 to 20/12
7.5
2.29
over 20/12 to 21/12
8
2.44
Diagram 4: The upper half of the flashing is in-
stalled under the roofing material and not nailed
down until the chimney is installed. This allows for
small adjustments.
6. Continue to assemble pipe lengths.
Note: If an offset is necessary in the attic to
avoid obstructions, it is important to
support the vent pipe every 3 feet, to
avoid excessive stress on the elbows,
and possible separation. Wall straps are
available for this purpose (Diagram 2).
Galvanized pipe is desirable above the roof line
due to its higher corrosion resistance. Continue
to add pipe sections through the flashing until
the height of the vent cap meets the minimum
height requirements specified in Diagram 5 or
local codes. Note that for steep roof pitches, the
vertical height must be increased.
Diagram 2
Diagram 1
Содержание Grandview G800C-1
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