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Note:
a) The horizontal run of vent should
have a 1/4 inch rise for every 1 foot of
run towards the termination. Never
allow the vent to run downward. This
could cause high temperatures and
may present the possibility of a fire.
b) The location of the horizontal vent
termination on an exterior wall must
meet all local and national building
codes, and must not be blocked
or obstructed. See diagram in the
"External Vent Terminal Locations"
section.
4) If installing the vent termination to a
wall with vinyl siding, the Vinyl Siding
Standoff must be used. Attach the Vinyl
Siding Standoff to the Horizontal Vent
Termination, but first run a bead of non-
hardening mastic around its outside
edges, so as to make a seal between
vent cap and the standoff. Install the
Vinyl Siding Standoff) between the vent
cap and the exterior wall and attach with
the four wood screws provided. Seal
around the Vinyl Siding Standoff on all
four sides. Diagram 6. The arrow on
the vent cap should be pointing up.
Insure that the 1-1/4" clearances to
combustible materials are maintained.
See diagram 4.
Note: If installing termination on a
siding covered wall, a vinyl sid-
ing standoff or furring strips
must be used to ensure that the
termination is not recessed into
the siding. The four wood screws
provided should be replaced with
appropriate fasteners for stucco,
brick, concrete, or other types of
sidings.
5) Before connecting the horizontal run of
Diagram 4
Hampton® H35U Direct Vent Freestanding Gas Stove
vent pipe to the vent termination, slide the black
decorative wall thimble cover over the vent pipe,
then slide the Wall Thimble over the vent pipe.
6) 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 a sufficient dis-
tance 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. Bend any
remaining portion of the sheet metal strip back
towards the vent cap, so it will be concealed by
the decorative wall thimble cover. See Diagram
5.
7) Install wall thimble in the center of the 10" square
and attach with wood screws.
Diagram 5
8) Slide the decorative wall thimble up to the wall
surface being careful not to scratch the paint and
attach with screws provided. Apply decorative
brass or chrome trim if desired. See Diagram
6.
Diagram 6
installation
Vertical Termination - Rigid Vent
System
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 the "Exterior Vent
Terminal Locations" section for the maximum
vertical rise of the venting system and the
maximum horizontal offset limitations.
Diagram 7
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 ceil-
ing. 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
8 to avoid cutting load bearing members.
3) To install the Round Support Box/Wall Thimble
in a flat ceiling, cut a 10 inch square hole in
the ceiling centred on the hole drilled in Step
2. Frame the hole as shown in Diagram 9.
29
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