VENTING INSTALLATION

Installation Planning (Cont.) Installation for Horizontal Termination

13

VENTING INSTALLATION

Continued

Installing Vent System in a Chase

A chase is a vertical box-like 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 air space clearance between vent pipes and combustible materials and/or insulation is 1".

INSTALLATION FOR HORIZONTAL TERMINATION

CAUTION: Horizontally terminated venting con- figurations require one foot of vertical rise from the 45° elbow before any horizontal run can be made. Failure to meet venting requirements may cause performance problems and possible damage to the fireplace.

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 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 22 and 23). Snorkel kit VKS-47-K is also available (see page 19). Fol- low the same installation procedures used for standard horizon- tal termination with the exception of the external wall firestop. The snorkel termination does not require the use of the external wall firestop. If installing the snorkel termination below grade (basement applications), you must provide proper drainage to prevent water from entering the snorkel termination (see Figure 23). Do not back fill around the snorkel termination.

2.Vent pipes and fittings have special twist-lock connections. As- semble the desired combination of pipe and elbows to the appli- ance adaptor with pipe seams oriented towards the wall or floor.

Twist-lock Procedure: The female ends of the pipes and fittings have four locking lugs (indentations). These lugs will slide straight into matching slots on the male ends of adjacent pipes and fit- tings. (All connections must be sealed with high temperature sili- cone sealant as specified in the second warning statement on page 12.) Push the pipe sections together and twist one section clock- wise approximately one-quarter turn until the sections are fully locked. See Figure 24. Note: Horizontal runs of vent must be supported every three feet. Use wall straps for this purpose.

Snorkel

12" Minimum

(30.5cm)

Figure 22 - Snorkel Termination

Snorkel

12" Minimum

(30.5cm)

Adequate drainage

Figure 23 - Snorkel Termination with Drainage Pipe

Female

Locking Lugs

Male

Slots

Vent Pipe

Figure 24 - Vent Pipe Connections

For morevisit www..com

107304-01D

Page 13
Image 13
Desa SDVBNC, SDVBPC installation manual Installation for Horizontal Termination, Installing Vent System in a Chase