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3.
When penetrating through stucco wall, install the
counter flashing. The counter flashing allows stucco,
or other materials, to be finished directly to the sides
of the termination cap. First attach the counter flash-
ing to the base of the horizontal termination cap with
the small screws provided, then mount entire assem-
bly onto the wall with the four (4) 2
screws provided.
4. If the optional copper version of the horizontal termina-
tion cap is installed, use an appropriate noncombusti-
ble material to avoid direct contact between the galva-
nized and copper metals to prevent possible galvanic
reaction.
Step 5. Before connecting your horizontal pipe sections
to the horizontal termination cap, slide the wall thimble
cover over the pipe section nearest the interior side of
wall. (Fig. 31)
Step 6. Slide the appliance and vent assembly towards
the wall, carefully inserting the pipe section into the cap
assembly. It is important the pipe section extends into the
back of the termination cap with a minimum overlap of
1
⁄
" (32 mm). Use the two (2) sheet metal screws pro-
1
4
vided to secure the pipe section to the back of the termi-
nation cap. The wall thimble cover will cover the screw
heads. (Fig. 31)
Figure 31
Sheet Metal
Screws
Wall Thimble Cover
Step 7. Slide the wall thimble cover up to the wall surface
and attach to the wall with screws provided. (Fig. 32) Ap-
ply optional decorative brass trim to wall thimble cover if
desired.
ST983
Vertical Installation
wall thimble cover
Step 1. Check these installation instructions for required
8/07
clearances (air spaces) to combustibles when passing
through ceilings, walls, roofs, enclosures, attic rafters or
other nearby combustible surfaces. Do not pack air spac-
es with insulation. Check these instructions for maximum
vertical rise of the venting system and any maximum hori-
zontal offset limitations.
20306761
⁄
" (64 mm) wood
1
2
Zero Clearance
Wall Sleeve
ST983
Firestop
Intrepid® Direct Vent - Rear Vent Gas Heater
Figure 32
Wood Screws
Step 2. Set the gas appliance
in the desire location. Drop a
plumb bob down from the ceil-
B984
ing to the position of the ap-
install thimble cover
pliance flue exit, and mark the
8/07
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. (Fig. 33) Determine if
ceiling joists, roof rafters, fram-
ing or other materials will ob-
struct the venting system. You
may wish to relocate the appli-
ance or to offset, to avoid cut-
ting load-bearing members.
Step 3. To install the round ceil-
ing support/wall thimble cover
in a flat ceiling, cut a 10" x 10"
(254 x 254 mm) square hole in
the ceiling (unless otherwise
specified) centered on the hole
drilled in Step 2. Frame the hole
as shown in Figure 34.
Step 4. If the twist-lock appliance adapter has not been
installed on the stove, do so now.
Step 5. Assemble the desired pipe sections and elbows
necessary to reach from the appliance adapter up through
the round ceiling cover or support box. Ensure that all
pipe and elbow connections are in their fully twist-locked
position.
Step 6. Cut a hole in the roof centered on the small drill
hole placed in the roof in Step 2. The opening should be
of sufficient size to meet the minimum requirements for
clearance to combustibles, as specified. Continue to as-
ST984
Figure 33
Mark Location
Mark and Drill
Plumb Bob
ST985
ST984
straight up locat
8/07
19
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