Desa CDVBPC - Manual (Page 12)

105501-01F
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12
VENTING INSTALLATION
Continued
NOTICE: Treatment of firestops and construction of
the chase may vary from building type to building
type. These instructions are not substitutes for the
requirements of local building codes. You must fol-
low all local building codes.
Installing Vent System in a Chase
A chase is a vertical boxlike structure built to enclose venting that runs
along the outside of a building. A chase is not required for such venting.
Note: When installing in a chase, you should insulate the chase as
you would the outside walls of your home. This is especially
important in cold climates. Minimum clearance between vent pipes
and combustible materials such as insulation is 1".
INSTALLATION FOR HORIZONTAL
TERMINATION
1. Determine the route your horizontal venting will take. Note:
The location of the horizontal vent termination on the exterior
wall must meet all local and national building codes and must
not be easily blocked or obstructed.
Snorkel terminations are available for terminations requiring a
vertical rise on the exterior of the building (see Figures 19 and
20). Snorkel kit SVKBK is also available (see page 18). Follow
the same installation procedures used for standard horizontal
terminations. If installing the snorkel termination below grade
(basement applications), you must provide proper drainage to
prevent water from entering the snorkel termination (see Figure
20). Do not back fill around the snorkel termination.
2. Rigid vent pipes and fittings have special twist-lock connec-
tions. Assemble the desired combination of pipe and elbows
to the appliance adaptor with pipe seams oriented towards the
wall or floor.
Twist-lock Procedure: The female ends of the pipes and fit-
tings have four locking lugs (indentations). These lugs will
slide straight into matching slots on the male ends of adjacent
pipes and fittings. (All connections must be sealed with high
temperature silicone sealant as specified in the second warn-
ing statement on page 11.) Push the pipe sections together and
twist one section clockwise approximately one-quarter turn
until the sections are fully locked. See Figure 21, page 13.
Note: Horizontal runs of vent must be supported every three
feet. Use wall straps for this purpose.
WARNING: Do not recess vent terminal into a wall
or siding.
VENTING INSTALLATION
Installation Planning (Cont.)
Installation For Horizontal Termination
Figure 19 - Snorkel Termination
Figure 20 - Snorkel Termination with Drainage Pipe
12" Minimum
12" Minimum
Snorkel
Snorkel
Adequate
drainage