Desa (V)3612ST Finishing Your Chimney System, Foot Rule, Minimum Chimney Height

10

SUPPORT SECTIONS

FINISHING YOUR CHIMNEY SYSTEM

10 Foot Rule

Minimum Chimney Height

Maximum Chimney Height

VENTING INSTALLTION

Continued

Maximum length of pipe between supports is 6 feet of angled run. A maximum of two 6 foot angled run sections per chimney system (See Figure 22).

RETURN

RETURNELBOW ELBOW

		6’ MAX
	(15.2cm)
6’ MAX	CEILING
(15.2cm)
	SUPPORT
	PIPE	OFFSET
OFFSET	V12S-8DM
		ELBOW
ELBOW	6’ MAX
	(15.2cm)
RETURN
		RETURN
ELBOW
		ELBOW
6’ MAX
(15.2cm)
	6’ MAX	6’ MAX
	(15.2cm)	(15.2cm)

OFFSET

ELBOW

FINISHING YOUR CHIMNEY SYSTEM

10 Foot Rule

All chimney terminations must extend a minimum of 3 feet above the highest point where it passes through the roof, and must be at least 2 feet above the roof within a 10 foot horizontal span (see Figure 23).

IMPORTANT: If an exposed portion of chimney is greater than 4 feet above the roof line, use support wires to keep chimney secure. The support wires may be attached to the outer pipe of the chimney with screws, provided the screws do not penetrate the inner flue pipe.

Figure 23 - 10 Foot Rule

	Minimum Chimney Height
Figure 22 - Typical Offset Installations	The minimum chimney height (measured from bottom of fireplace to
	flue gas outlet-end of pipe) is 16 feet for a straight run, 16 feet minimum
	for a run with 1 elbow set, and 25 feet minimum for a run with 2 elbow
	sets. (A set consists of one starter elbow and one return elbow.)
	Uncommon circumstances such as neighboring hills, tall trees, or
	strong wind areas can cause down drafts in the chimney system. In
	such cases going beyond the minimum recommended height would
	be preferable to provide a better draw.
	Maximum Chimney Height
	The fireplace height approved for any chimney run with this
	fireplace system is 40 feet measured from bottom of fireplace to flue
	outlet-end of pipe. See Figure 24, page 11

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115603-01A