Vertical Vent Terminal Installation; Installation Sequence - A.O. Smith CYCLONE XHE BTH 300A Installation & Operating Instructions Manual

wall. Align the holes by drilling a hole through the center of the
template from the inside through to the outside. The template
can now be positioned on the outside wall using the drilled holes
as a centering point for the template.
3. A) MASONRY SIDE WALLS
Chisel an opening approximately 1/2" (1.3 cm) larger than the
marked circle.
B) WOODEN SIDE WALLS
Drill a pilot hole approximately one quarter inch outside of the
marked circle. This pilot hole is used as a starting point for a
saws-all or sabre saw blade. Cut around the marked circle staying
approximately one quarter inch outside of the line. (This will
allow the vent pipe to easily slide through the opening. The
resulting gap will be covered by the vent terminal cover plates.)
Repeat this step on the inside wall if necessary.
4. Cut a length of PVC pipe about 3.5" (8.9 cm) longer than the
wall thickness at the opening.
5. Glue the intake vent terminal to the section of the pipe.
6. Slide the wall plate over the pipe to stop against intake vent
terminal.
7. Place a bead of caulking (not supplied) around the gap between
the pipe and the wall. Place some of the caulking on the back of
the plate to hold it against the wall after installation.
8. If the vent pipe is installed up to the wall, with a coupling on the
end against the wall opening, the pipe with the vent terminal
can be prepared for gluing before inserting through the wall.
Slide the pipe through the wall and insert into coupling on the
other side of the wall, making sure that the vent terminal ends
up pointed in the correct position (Figure 10).
EXHAUST VENT TERMINAL
INTAKE VENT TERMINAL
FIGURE 10

VERTICAL VENT TERMINAL INSTALLATION

IMPORTANT
WHEN TERMINATING THROUGH A ROOF, THE FOLLOWING
SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST
BE FOLLOWED.
1. Proper support must be provided for all pipe protruding through
the roof.
2. The vertical roof terminations should be sealed with a plumbing
roof boot or equivalent flashing.
3. The intake vent termination and the exhaust vent termination
must penetrate the same side of roof.
4. The center line of the intake vent termination and the center line
of the exhaust vent termination must be no closer than
24" (61cm).
5. The intake vent terminal and the exhaust vent terminal must be
oriented facing downward and the same direction.
The specifications are displayed in Figure 11.
NOTE: Exhaust vent terminal is installed using the same procedure.

INSTALLATION SEQUENCE

NOTE: BEFORE BEGINNING INSTALLATION OF ANY VENT PIPE,
READ "VENT PIPE PREPARATION" SECTION ON PAGES 10 &
11.
1. After the points of termination have been determined, use the
cover plates as templates to mark the holes for the vent pipes to
be inserted through the roof.
2. Drill a pilot hole approximately 1/4" (6 mm) outside of the marked
circle. This pilot hole is used as a starting point for a saws-all or
sabre saw blade. Cut around the marked circle staying
approximately one quarter inch outside the line. (This will allow
the vent pipe to easily slide through the opening). The resulting
gap will be covered by the roof boot/flashing.
3. Suspend the pipe through the center of the hole using proper
support.
4. Slide roof boot or equivalent flashing over pipe and secure roof
boot equivalent flashing to roof.
5. Seal around flashing.
6. Terminate intake terminal and exhaust vent terminal facing down
as shown in Figure 11.
9
FIGURE 11