July 12, 2006
Page 13
Heat & Glo · Mission Bay · 250-7512F
NOTE:
(1) Installation requires a minimum of 6 in. (152mm)
horizontal run of vent with a 1/4 in. (6mm) rise run towards
the termination. Each 1 ft. (305mm) of horizontal venting
must include a 1/4 in. (6mm) rise. Never allow the vent
to run downward. This could cause high temperatures
and may present the possibility of a fire.
(2) The location of the horizontal vent termination on an
exterior wall must meet all local and national building
codes, and must not be easily blocked or obstructed,
see
Figure 4.4
on page 9.
(3) For installations requiring a vertical rise on the exterior
of the building, the HHT RHVK snorkel kit (Part #844-
8921) is available with a 14 in. (356mm) and a 36 in.
(914mm) tall snorkel termination cap. Follow the
same installation procedures as used for standard
horizontal terminations. If the snorkel termination must
be installed below grade (i.e. basement application),
proper drainage must be provided to prevent water from
entering the snorkel termination. Do not backfill around
snorkel termination.
Step 4.
Position the horizontal termination cap in the center of the 10
in. x 10 in. (254mm x 254mm) square hole and run a bead
of non-hardening mastic around its outside edges, so as to
make a seal between it and the wall, attach termination cap
to the exterior wall with the four wood screws provided. The
arrow on the vent cap should be pointing up (
Figure 5.6
).
NOTES:
(1) The four wood screws provided should be replaced
with appropriate fasteners for stucco, brick, concrete,
or other types of sidings.
(2) Termination cap HHW2 is highly recommended on a
building with vinyl siding, as the vinyl siding standoff
is built in. The pilot hole will be 2 in. (51mm) closer to
the bottom of the square than the top. Using a framing
square, draw a 14 in. x 14 in. (356mm x 356mm) square
around the pilot hole. See
Figure 5.7
.
WOOD
SCREW
WALL THIMBLE
PART HHW2 PART
841-0670 (Preferred)
Figure 5.6
Step 5.
Place the wall thimble cover over the pipe assembly and
slide the appliance and vent assembly towards the wall,
carefully inserting the vent pipe into the vent termination
cap assembly. It is important that the vent pipe extend into
the vent termination cap a sufficient distance so as to result
in a minimum pipe overlap of 1-1/4 in. (32mm). Secure the
connection between the vent pipe and the vent termination
cap by attaching the two sheet metal strips extending from
the vent termination 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 (
Figure 5.9
).
VINYL SIDING
APPLY SEALANT TO ALL
FOUR SIDES
SCREWS
BOLT HORIZONTAL TOP
TO VINYL STANDOFF
SCREWS
VINYL SIDING STANDOFF
WITH SIDING BENEATH
REMOVED
WALL THIMBLE
WALL THIMBLE
COVER
Figure 5.8
8 in.
(203mm)
7 in.
(178mm)
7 in.
(178mm)
6 in.
(152mm)
Figure 5.7
(
NOTE:
If you are installing termination cap HHW2, the
pipe will be off center on flashing). Ensure that proper
clearances to combustible materials are maintained. If
you are using an approved termination cap other than
HHW2 (part #841-0670) on a building with vinyl siding,
a vinyl siding standoff should be installed between the
termination cap and the exterior wall (
Figure 5.8
). Follow
manufacturer’s instructions for attaching the vinyl siding
standoff to the horizontal termination cap. The vinyl
siding standoff prevents excessive heat from possibly
melting the vinyl siding material. The vent terminal cap
shall not be recessed into a wall or siding. Remove
siding from the area where the standoff will be located.
