Desa CDVBNC, CDVBPC Installation for Horizontal Termination, Installing Vent System in a Chase

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VENTING INSTALLATION

Installation Planning (Cont.) Installation For Horizontal Termination

VENTING INSTALLATION

Continued

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.

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.

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.

WARNING: Do not recess vent terminal into a wall or siding.

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.

Snorkel

12" Minimum

Figure 19 - Snorkel Termination

Snorkel

12" Minimum

Adequate

drainage

Figure 20 - Snorkel Termination with Drainage Pipe

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