52 | Bellavista
®
B36XTE-11 Gas Fireplace
installation
Gas Line
Installation
The gas line is brought through the right side of
the appliance. The gas valve is situated on the
right hand side of the unit and the gas inlet is
on the right hand side of the valve.
The gas line connection may be made of rigid
pipe, copper pipe or an approved flex connector.
(If you are using rigid pipe, ensure that the valve
can be removed for servicing.) Since some
municipalities have additional local codes it is
always best to consult with your local authorities
and the CAN/CGA B149 installation code.
For USA installations follow local codes and/
or the current National Fuel Gas Code, ANSI
Z223.1.
When using copper or flex connectors use only
approved fittings. Always provide a union so that
gas lines can be easily disconnected for servicing.
Flare nuts for copper lines and flex connectors
are usually considered to meet this requirement.
Important: Always check for gas leaks with a
soap and water solution or gas leak detector.
Do not use open flame for leak testing.
Diagram 4
Diagram 3: 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.
Diagram 2
Unit Installation with Vertical
Termination
4" X 6-5/8" VENTING
(Rigid Vent Systems)
(
Must use Reducer #946-606 and rigid
pipe adaptor #770-994)
1. Maintain the 1-1/2" 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 "Venting"
Sections for the maximum
vertical rise of the venting 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
vent 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 vent 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 10 inch 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-
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.
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 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 vent 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 vent cap meets the minimum height require-
ments specified in Dia. 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 vent height may solve the problem.
7. Ensure vent 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 vent passes through must
be enclosed.
Diagram 1
Note: All vertical terminations are
vented using 4" x 6-5/8" venting and
reducer #946-606 and rigid pipe adap-
tor #770-994.
Minimum Vent
Height
Roof Pitch
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
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