Installation Sequence - A.O. Smith BTX 100 Instruction Manual

sequence of InstallatIons, fIGures 15 – 16B
Cut a length of PVC pipe about 3.5 inches (8.9 cm) longer than the
wall thickness at the opening. Glue the vent terminal to this section of
pipe. Slide the wall plate over the pipe to stop against the vent terminal.
Place a bead of caulking (not supplied) around the gap between the
pipe and cover plate. Apply enough to fill some of the gap between
the pipe and wall. Place some of the caulking on the back of the plate
to hold it against the wall after installation. 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 the coupling on the other side of the wall, making sure that the
vent terminal ends up pointed in the correct position, see Figure 15.
vent terMInatIon - fIGure 15
dIrect vent terMInal InstallatIon
The air intake provided on the unit contains an air intake screen to
prevent large particles from entering the unit.
fIGure 16a
WHEN THE UNIT IS TO BE SETUP AS A DIRECT vENT, THE AIR
INTAkE SCREEN MUST BE REMOvED. THE INLET vENT PIPE
MAY THEN BE GLUED TO THE AIR INTAKE (See Figure 16A)
PROvIDED ON THE UNIT.
THIS UNIT CONSISTS OF TWO vENT TERMINALS - AN INTAkE
vENT TERMINAL AND AN EXHAUST vENT TERMINAL. THE INTAkE
VENT TERMINAL IS A 2" 90° PVC ELBOW(-) WITH AN AIR INTAKE
SCREEN AND THE EXHAUST VENT TERMINAL IS A 2" 22.5° PVC
COUPLING WITH A MESH WIRE SCREEN.
NOTE: TO PREVENT EXHAUSTING PRODUCTS FROM
CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS,
THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO
TERMINALS IS RECOMMENDED.
fIGure 16B

InstallatIon sequence

vent terMInals supplIed wIth heater Must Be used.
NOTE: BEFORE BEGINNING INSTALLATION OF ANY
vENT PIPE READ THE vENT PIPE MANUFACTURER'S
INSTALLATION INSTRUCTIONS.
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 wall. BEWARE OF
CONCEALED WIRING AND PIPING INSIDE OF WALL. If the
vent terminals are being installed on the outside of a finished
wall, it may be easier to mark both the inside and outside
wall. Align the holesby 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.
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.
2. Cut a length of 3" PVC pipe about 3.5" (8.9 cm) longer than the
wall thickness at the opening.
3. Glue the intake vent terminal to the section of the pipe.
4. Slide the wall plate over pipe to stop against intake vent terminal.
5. 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.
6. 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 16B and 17).
25
fIGure 17