Desa V3610ST manual Venting Installtion, Continued, Support Sections, Elbow Offset Installation

VENTING INSTALLTION

Continued

Living Space Above Ceiling

Existing Ceiling

Frame

Firestop Spacer

Screw (8)

FIRESTOP SPACERS	9
ELBOW OFFSET INSTALLATION
SUPPORT SECTIONS

SUPPORT SECTIONS

The chimney support section is a 4-inch strap and 12 inch length of pipe. A chimney support is required every 30 feet above the fireplace after a straight chimney run, or above a return elbow after a straight chimney run (see Figure 20). This support is designed to relieve the extra weight load on the fireplace and elbows when high chimneys are installed.

To achieve desired offset, you may install combinations of 12, 18, 36, and 48 inch lengths of double wall pipe. See Figure 21 and Rise and Offset Chart below.

2" (5.1cm) Minimum

Figure 17 - Firestop Spacer For Living Space

Screw (8)

Firestop Spacer

Attic Space

Above Ceiling

Angled Firestop

Ceiling Support

Straps

Return

Elbow

B

A

Existing Ceiling

Frame

Figure 18 - Firestop Spacer for Attic Space

ELBOW OFFSET INSTALLATION

Chimney weight above offset rests on return elbow. Straps must be secured with nails to rafters or joists (see Figure 19).

Strap

12S-10DM

Support

Required

30 FT.	30 FT.
(9.14m)	(9.14m)

Return

Elbow

Figure 19 - Elbow Offset

Figure 20 - Chimney Supports Figure 21 - Rise and Offset

RISE AND OFFSET CHART

A	B			Length of Pipe
(Offset)	(Rise)		48		36	18	12
4 3/8	16 3/8				Elbow	Set Only
9 1/2	25 1/4				1
12 1/2	30 3/8					1
14 3/8	34						2
17 5/8	39 1/4					1	1
21 1/2	46				1
22 3/4	48 1/8					1	2
26 3/8	54 7/8	1
26 3/8	60				1	1
31 3/4	63 3/4	1				1
34 3/4	69	1				1
38 5/8	75 5/8				2
39 7/8	77 7/8	1				1	1
43 3/4	84 1/2	1			1
46 3/4	87 3/4				2	1
48 7/8	93 3/8	2

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55253C